Title of Invention	INTEGRATED WIRELESS HEADSET
Abstract	A mobile device integrates a wireless headset with the housing of a mobile terminal. In an exemplary embodiment, the housing of the mobile terminal includes a fastener for mechanically connecting the wireless headset to the housing. When the wireless headset is mechanically disconnected from the housing, a speaker and microphone associated with the wireless headset interfaces with the mobile terminal via a wireless interface. However, when the wireless headset mechanically connects to the housing, the speaker and microphone associated with the wireless headset mechanically and electrically connect to the housing and operate as the speaker and microphone for the mobile terminal. A detector circuit included in the mobile device also determines the position of the wireless headset relative to the mobile terminal, and may automatically select a wireless or electrical interface between the wireless headset and the mobile terminal based on the determined position.

Title of Invention

INTEGRATED WIRELESS HEADSET

Abstract

A mobile device integrates a wireless headset with the housing of a mobile terminal. In an exemplary embodiment, the housing of the mobile terminal includes a fastener for mechanically connecting the wireless headset to the housing. When the wireless headset is mechanically disconnected from the housing, a speaker and microphone associated with the wireless headset interfaces with the mobile terminal via a wireless interface. However, when the wireless headset mechanically connects to the housing, the speaker and microphone associated with the wireless headset mechanically and electrically connect to the housing and operate as the speaker and microphone for the mobile terminal. A detector circuit included in the mobile device also determines the position of the wireless headset relative to the mobile terminal, and may automatically select a wireless or electrical interface between the wireless headset and the mobile terminal based on the determined position.

Full Text	FORM 2 THE PATENTS ACT, 1970 (39 of 1970) & The Patents Rules, 2003 COMPLETE SPECIFICATION (See section 10, rule 13) "INTEGRATED WIRELESS HEADSET" SONY ERICSSON MOBILE COMMUNICATIONS AB of Nya Vattentornet, S-221 88 Lund Sweden. The following specification particularly describes the invention and the manner in which it is to be performed. WO 2005/120023 PCT/US2004/019891 INTEGRATED WIRELESS HEADSET BACKGROUND OF THE INVENTION The present invention relates generally to wireless mobile devices, and more 5 particularly to a wireless headset integrated with a mobile device. The popularity of mobile devices, such as cellular telephones, personal data assistants (PDAs), etc., continues to increase each year. To maintain this trend, manufacturers continue to explore ways to make mobile devices appeal to a larger percentage of the population. One area of focus involves hands-free wireless 10 communication where wireless headsets communicate with a local mobile device via a local wireless network. Because wireless headsets free-up a user's hands while the user communicates with friends, family, and colleagues using their mobile device, users are free to perform other tasks, such as driving, shopping, etc. As a result, wireless 15 headsets increase the convenience of using a mobile device. However, because conventional wireless headsets are separate from mobile devices, a user has to separately track and carry the wireless headset. Further, users typically have to separately monitor the headset battery and charge the wireless headset battery on special headset chargers, which may be separate from the mobile device charger. 20 To many users, the inconvenience of having to separately maintain and track the wireless headset outweighs the convenience associated with using the wireless headset. SUMMARY OF THE INVENTION 25 The present invention comprises a method and apparatus that integrates a wireless headset with a mobile terminal. In an exemplary embodiment, the housing of the mobile terminal includes a fastener for mechanically connecting the wireless headset to the housing. When the wireless headset is mechanically connected to the WO 2005/120023 PCT/US2004/019891 housing, the wireless headset interfaces with the mobile terminal via an electrical interface. Alternatively, when the wireless headset is mechanically disconnected from the housing, the wireless headset interfaces with the mobile terminal via a wireless interface. 5 In exemplary embodiments, the speaker and microphone associated with the wireless headset also operate as the mobile terminal speaker and microphone. Thus, when the wireless headset is mechanically connected to the mobile terminal, the speaker and microphone of the wireless headset interface with the mobile terminal via an electrical interface and operate as a conventional speaker and 10 microphone for the mobile terminal. However, when the wireless headset is mechanically disconnected from the mobile terminal, the speaker and microphone are also mechanically disconnected from the mobile terminal. As a result, the speaker and microphone interface with the mobile terminal via a wireless interface. Exemplary embodiments of the present invention may also include a detector 15 circuit to determine the position of the wireless headset relative to the mobile terminal. The mobile device then automatically selects an operating mode based on the determined position. For example, if the detector circuit determines that the wireless headset is mechanically disconnected from the mobile terminal, the mobile terminal may automatically select a wireless-interface operating mode and establish 20 a wireless interface between the wireless headset and the mobile terminal. Alternatively, if the detector circuit determines that the wireless headset is mechanically connected to the mobile terminal, the mobile terminal may automatically select an electrical-interface operating mode, and establish an electrical interface between the wireless headset and the mobile terminal. WO2W5/120023 PCTWS2004/019891 BRIEF DESCRIPTION OF THE DRAWINGS Figures 1A - 1C illustrate a series of schematic views of an exemplary mobile device and wireless headset according to the present invention. FIG. 2 illustrates a block diagram of an exemplary mobile device and wireless 5 headset operating in an electrical-interface operating mode according to the present invention. FIG. 3 illustrates a block diagram of an exemplary mobile device and wireless headset operating in a wireless-interface operating mode according to the present invention. 10 FIG. 4 illustrates an exemplary method of determining the position of the wireless headset relative to the mobile device. DETAILED DESCRIPTION OF THE INVENTION The following describes a cellular telephone with an integrated wireless 15 headset that operates in one of two operating modes. In a first operating mode, the wireless headset is mechanically and electrically connected to the cellular telephone such that the speaker and microphone of the wireless headset operate as the speaker and microphone of the cellular telephone. In the second operating mode, the wireless headset is mechanically and electrically disconnected from the cellular 20 telephone. In this mode, the speaker and microphone of the wireless headset interface with the cellular telephone via a wireless interface. Figures 1A - 1C illustrate an exemplary mobile device 100 comprising a cellular telephone 105 and a wireless headset 120 according to the present invention. While the present invention is described in terms of a cellular telephone, 25 those skilled in the art will appreciate that the present invention is applicable to any mobile device, including a clamshell cellular telephone, a Personal Communication System (PCS), a Personal Digital Assistant (PDA), a conventional laptop and/or WO 2005/120023 PCT/US2004/019891 palmtop receiver, or any other mobile device that includes a radiotelephone transceiver. Mobile device 100 includes a cellular telephone 105 with an associated housing 110 and a wireless headset 120. Housing 110 encases the electrical 5 components of the cellular telephone 105 and typically includes user interface components, such as a display 112, keypad 114, and/or control buttons 116 disposed on the outer surface of housing 110. A user interfaces with the cellular telephone 105 according to any conventional method. For example, the user may interface with cellular telephone 105 via the user interface components, as known in 10 the art. Alternatively, cellular telephone 105 may include voice recognition capabilities that allow the user to interface with cellular telephone 105 using voice commands. Wireless headset 120 is a hands-free communication device that enables a user to communicate with the cellular telephone 105 using a local wireless interface. 15 In exemplary embodiments, the local wireless interface comprises a short-range ad hoc wireless network, such as a Bluetooth* network. A Bluetooth* network is a universal radio interface that enables two or more wireless devices to communicate wirelessly via short-range ad hoc networks. For further details regarding Bluetooth* technology, the interested reader may refer to "Bluetooth - The universal radio 20 interface for ad hoc, wireless connectivity," presented by Jaap Haartsen in Ericsson Review No. 3,1998, which is herein incorporated by reference. While the present application refers to a short-range ad hoc wireless network as a "Bluetooth® network," those skilled in the art will appreciate that the present invention is not limited to Bluetooth® networks and is applicable to any wireless interface between a cellular 25 telephone 105 and a wireless headset 120. Wireless headset 120 generally includes a speaker 122 for projecting audible signals to a user, a microphone 124 for receiving audible signals from a user, and a WO 2005/120023 6 PCT/US2004/019891 support for securing the wireless headset 120 to the head of a user, such as an ear support 126. Further, wireless headset 120 may include a pivot connector 129 that pivotally connects the ear support 126 to the microphone 124, and enables the user to position the microphone 124 at any desired location relative to the ear support 126 5 by rotating the microphone 124 about pivot connector 129. Pivot connector 129 also enables the wireless headset 120 to be positioned into a compact arrangement that can be integrated and stored with cellular telephone 105 using a fastener. The fastener may be any fastening means known in the art, including straps, brackets, clips, etc., that secures the wireless headset 120 to the 10 housing 110. In an exemplary embodiment, the fastener is a recess 130 disposed in housing 110, as shown in Figure 1C. Recess 130 is generally designed to secure the wireless headset 120 to housing 110. In one exemplary embodiment, recess 130 may frictionally hold the wireless headset 120 to the housing 110. Alternatively, in another exemplary embodiment, recess 130 may include a latch, such as a magnetic 15 latch, a spring clip, etc., that holds wireless headset 120 within the recess 130. In any event, the user may secure the wireless headset 120 to the housing 110 by pushing the wireless headset 120 into the recess. When the user is ready to use wireless headset 120, the user may remove the wireless headset 120 from the recess 130 by pulling on the wireless headset 120 or by pressing a release button 20 (not shown) disposed on the housing 110 to release the wireless headset 120 from the recess 130. Recess 130 includes a speaker area 132 adapted to receive speaker 122, a microphone area 134 adapted to receive microphone 124, and an ear support area 136 adapted to receive ear support 126. In exemplary embodiments, the shapes of 25 the speaker, microphone, and ear support areas 132,134,136 complement the shapes of the speaker 122, microphone 124, and ear support 126, respectively. WO 2005/120023 7 PCT/US2004/019891 Further, the depth of recess 130 may be structured such that the wireless headset 120 is flush with the housing 110 when secured within the recess 130. As shown in Figure 1C, recess 130 is positioned generally on a back of housing 110. Those skilled in the art, however, will appreciate that the recess 130 is 5 not limited to this configuration, and may be formed on any portion of the housing 110 as appropriate for a given wireless headset 120 and cellular telephone 105. In the embodiment of Figure 1C, microphone area 134 is generally positioned proximate a side and/or bottom of housing 110, while speaker area 132 is generally positioned proximate the top of housing 110. Further, microphone area 134 may 10 include an additional cutout section in a side of the housing 110 that positions the microphone 124 proximate the front of the housing 110 when wireless headset 120 is secured within the recess 130. The microphone cutout section may extend to the front of the housing 110, as shown in Figures 1A and 1C. Alternatively, the microphone cutout section may only extend through a portion of the side of the 15 housing 110. Speaker area 132 may also include an additional cutout section in the top of housing 110 that enables speaker 122 to extend to the front of the housing 110 when wireless headset 120 is secured within the recess 130. As a result, when wireless headset 120 is secured within recess 130, the speaker 122 and microphone 124 are positioned proximate the locations conventionally reserved for the speaker 20 and microphone of a conventional cellular telephone 105. Therefore, in addition to functioning as the primary speaker and microphone for the wireless headset 120, speaker 122 and microphone 124 also function as the primary speaker and microphone for the cellular telephone 105 when the wireless headset 120 is secured to the housing 110. 25 To facilitate using the speaker 122 and microphone 124 as the speaker and microphone of cellular telephone 105, cellular telephone 105 also includes electrical interface means, such as a connector or electrical contact, to electrically interface the WO 2005/120023 8 PC17US2004/019891 wireless headset 120 with the cellular telephone 105 when the wireless headset 120 is mechanically secured to the housing 110. In an exemplary embodiment, the electrical interface includes an electrical contact 138 disposed on a surface of the recess 130 that mates with a corresponding electrical contact 128 disposed on 5 wireless headset 120. Accordingly, when wireless headset 120 is secured within recess 130, electrical contacts 128,138 electrically connect the wireless headset 120 to the cellular telephone 105. While Figure 1C only shows one electrical contact 128, 138, those skilled in the art will appreciate that more than one electrical contact 128 may electrically connect wireless headset 120 to cellular telephone 105. 10 Referring now to Figures 2-4, operational details of the present invention will be described further. Figures 2 and 3 illustrate a block diagram of an exemplary mobile device 100. To facilitate the following discussions, each illustrated component of mobile device 100 is shown as a separate element. However, those skilled in the art wilt appreciate that two or more of these components may be 15 combined into a single microprocessor, application specific integrated circuit, or other suitable circuit. Mobile device 100 includes headset electronics 210 associated with wireless headset 120 and mobile device electronics 230 associated with cellular telephone 105. Headset electronics 210 include a headset controller 214 for controlling the 20 headset electronics 210 and a headset battery 216 for providing power to the headset electronics 210. Headset electronics 210 further include speaker 122 for projecting audible signals to a user, microphone 124 for receiving audible signals from the user, and an audio processor 212. Audio processor 212 processes audio signals received from the mobile device electronics 230 according to known 25 methods, and provides the processed audio signals to speaker 122 for projection to the user. Audio processor 212 further processes audible signals received by microphone 124 according to known methods, and forwards the processed audio WO 2005/120023 9 PCT/US2004/01989I signals to the mobile device electronics 230. As discussed further below, audio processor 212 transmits/receives audio signals to/from the mobile device electronics 230 via an electrical or wireless interface, depending on the current operating mode of the mobile device 100. To that end, headset electronics 210 further include a 5 wireless transmitter, such as a Bluetooth® transceiver 218 and antenna 220 for communicating with the mobile device electronics 230 via the wireless interface according to instructions provided by headset controller 214. Mobile device electronics 230 include a transceiver 232 for transmitting/receiving information signals to/from a base station via a cellular antenna 10 234. Transceiver 232 may operate according to any known standard, including GSM, TIA/EIA-136, cdmaOne, IS-95, cdma2000, UMTS, or Wideband CDMA. Mobile device electronics 230 also includes a power management circuit 236, mobile battery 238, mobile controller 240, and local wireless transmitter, such as a Bluetooth® transceiver 242 and antenna 244. Power management circuit 236 15 monitors and regulates the power of the mobile battery 238 according to known power management techniques. For example, power management circuit 236 may monitor the power level of the mobile battery 238, regulate a power dissipation rate of the mobile battery 238, and/or regulate and control the charging process used to charge mobile battery 238. In addition to the conventional power management of 20 mobile battery 238, power management circuit 236 may also manage the power of headset battery 216 when power management circuit 236 is electrically connected to the headset battery 216. For example, power management circuit 236 may charge headset battery 216 and/or provide power to the headset electronics 210 via the headset battery 216. 25 The operation of the power management circuit 236 and the operations of other components in the mobile device electronics 230 is controlled by mobile controller 240 according to known techniques. Mobile controller 240 may also control WO 2005/120023 10 PCT/US2004/019891 the operating mode of the cellular telephone 105, and typically controls the operation of Bluetooth® transceiver 242 and antenna 244 based on the operating mode. For example, mobile controller 240 may enable an electrical-interface operating mode when there is an electrical connection between headset electronics 210 and mobile 5 device electronics 230, i.e., when wireless headset 120 is mechanically connected to housing 110, as shown in Figure 1B and functionally represented by Figure 2. In the electrical-interface operating mode, mobile controller 240 disables the Bluetooth® transceiver 242 and antenna 244, and relies solely on the electrical connections made by electrical contacts 128,138 to provide a communication path between 10 mobile device electronics 230 and headset electronics 210. However, when there is no electrical connection between headset electronics 210 and mobile device electronics 230, such as when the wireless headset 120 is mechanically disconnected from the housing 110, as shown in Figure 1C and functionally represented by Figure 3, mobile controller 240 may enable a wireless- 15 interface operating mode. In the wireless-interface operating mode, mobile controller 240 enables the Bluetooth® transceiver 242 and antenna 244 to establish a wireless interface between the headset electronics 210 and the mobile device electronics 230 according to Bluetooth® protocols known in the art. In addition to the above-described components, mobile device electronics 230 20 also includes a mode control, such as headset detector 246, that indicates a desired operating mode to the mobile controller 240. Headset detector 246 selects a desired operating mode, i.e., an electrical-interface or wireless-interface operating mode according to a mode-related user input. In some embodiments, headset detector 246 selects the operating mode based on a command entered via the user interface or 25 the position of a switch disposed on the housing 110. Alternatively, in a preferred embodiment of the present invention, headset detector 246 automatically selects the operating mode based on the user-selected WO 2005/120023 11 PCT/US2004/019891 location of the wireless headset 120 relative to the cellular telephone 105. For example, headset detector 246 may select the operating mode based on whether or not the wireless headset 120 is mechanically connected to the housing. In exemplary embodiments of the present invention, headset detector 246 determines if 5 the wireless headset 120 is mechanically connected to housing 110 by determining if an electrical connection exists between the headset electronics 210 and the mobile device electronics 230. For example, headset detector 246 may monitor an electrical trace in the mobile device electronics 230, such as trace 233, to determine if there is current flowing between the mobile device electronics 230 and the headset 10 electronics 210. When an electrical current flow is detected, headset detector 246 determines that the headset electronics 210 are electrically connected to the mobile device electronics 230. Alternatively, headset detector 246 may monitor the power management circuit 236 to determine if the power management circuit 236 is providing electrical current to the headset electronics 210. In any event, when 15 electrical current is flowing between the mobile device electronics 230 and headset electronics 210, headset detector 246 determines that the wireless headset 120 is mechanically connected to the housing 110, and selects the electrical-interface operating mode; when no electrical current flow is detected, headset detector 246 determines that the wireless headset is mechanically disconnected from the housing 20 110, and selects the wireless-interface operating mode. In addition to headset detector 246, mobile device electronics 230 may also include an optional headset locator 248 operatively connected to a locator button 118 disposed on housing 110. In response to the user activating the locator button 118, headset locator 248 transmits a locator request signal to the wireless headset 120. 25 Upon receipt of the locator request signal, wireless headset 120 projects a locator signal, such as a visible and/or audible signal from the wireless headset 120. The WO 2005/120023 12 PCT/US2004/019891 user may then locate wireless headset 120 by seeing and/or hearing the locator signal projected from wireless headset 120. Referring now to Figure 4, an exemplary method of headset detection and location will be described. Mobile device electronics 230 begin the headset detection 5 loop (Block 300) at any appropriate time, i.e., when mobile device 100 powers up. Headset detector 246 then determines if the wireless headset 120 is mechanically connected to the housing 110 according to any of the methods described above (Block 302). If wireless headset 120 is mechanically connected to the housing 110, mobile device 100 operates in the electrical-interface operating mode (Block 304). 10 However, if wireless headset 120 is mechanically disconnected from the housing 110, mobile device 100 operates in the wireless-interface operating mode and establishes the wireless interface between the mobile device electronics 230 and the headset electronics 210 (Block 306). In some embodiments, the output of Block 306 may return to Block 302, 15 where control of the headset detection loop is maintained in the headset detector 246, and the process of Blocks 302 - 306 is repeated. However, if mobile device electronics 230 includes a headset locator 248, the output of Block 306 may continue to Block 308, where control of the headset detection loop is transferred to headset locator 248. Headset locator 248 then determines if locator button 118 has been 20 activated (Block 308). If locator button 118 has not been activated, control of the headset detection loop returns to the headset detector 246, and the process of Blocks 302 - 308 repeats. However, if locator button 118 has been activated, headset locator 248 triggers the locator signal (Block 310) before returning control of the headset detection loop to the headset detector 246, where the process of Blocks 25 302 - 308 repeats. The above discloses a cellular telephone 105 with an integrated wireless headset 120. Because the wireless headset 120 may be electrically and WO 2005/120023 13 PCT/US2004/019»91 mechanically integrated with the cellular telephone 105, the present invention includes several benefits over conventional mobile device/wireless headset combinations. First, because the wireless headset 120 is integral with the housing 110 of the cellular telephone 105, wireless headset 120 is readily available anytime 5 the user has their cellular telephone 105 with them. Further, because the headset electronics 210 are electrically connected to the mobile device electronics 230 when the wireless headset 120 is mechanically connected to the housing 110, the headset battery 216 may be charged at the same time as, and with the same charger as, the mobile battery 238. As a result, only one charger is required to charge the mobile 10 and headset batteries 238, 216. In addition, in the embodiments where the headset detector 246 automatically determines the position of the wireless headset 120, a user can activate the wireless-interface mode simply by removing the wireless headset 120 from housing 110. As a result, the user does not have to track the operating mode of cellular telephone 105. 15 The present invention may, of course, be carried out in other ways than those specifically set forth herein without departing from essential characteristics of the invention. The present embodiments are to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein. 20 WO 2005/120023 14 PCT/US2004/019891 CLAIMS What is claimed is: 1. A mobile device (100) comprising: a mobile terminal (105) with an associated housing (110); 5 a wireless headset (120); and a fastener (130) disposed on the housing (110) for mechanically connecting the wireless headset (120) to the housing (110). 2. The mobile device of claim 1 wherein the wireless headset (120) includes a 10 speaker (122) and a microphone (124). 3. The mobile device of claim 2 wherein the wireless headset (120) is adapted to operate in a first operating mode when mechanically connected to the housing (110) and further wherein the wireless headset (120) is adapted to operate in a second 15 operating mode when mechanically disconnected from the housing (110). 4. The mobile device of claim 3 wherein the wireless headset (120) interfaces with the mobile terminal (105) via a wireless interface when said wireless headset (120) is operating in the second operating mode. 20 5. The mobile device of claim 3 wherein the wireless headset (120) interfaces with the mobile terminal (105) via an electrical interface when said wireless headset (120) is operating in the first operating mode. 25 6. The mobile device of claim 5 further comprising a first electrical contact (138) disposed on the housing (110) and a second electrical contact (128) disposed on the wireless headset (120), wherein the first electrical contact (138) electrically connects WO 2005/120023 15 PCT/US2004/019891 to the second electrical contact (128) when said wireless headset (120) is operating in the first operating mode. 7. The mobile device of claim 2 wherein the fastener (130) comprises a recess 5 disposed on the housing (110) for receiving the wireless headset. 8. The mobile device of claim 7 wherein the recess is configured to secure the wireless headset (120) to the housing (110). 10 9. The mobile device of claim 7 wherein the recess is configured to frictionally secure the wireless headset (120) to the housing (110). 10. The mobile device of claim 7 wherein the wireless headset (120) mechanically connects to the housing (110) when the wireless headset (120) is 15 secured within said recess. 11. The mobile device of claim 7 wherein the wireless headset (120) is flush with the housing (110) when the wireless headset (120) is secured within said recess. 20 12. The mobile device of claim 7 wherein the fastener (130) further comprises a cutout in a side of the housing (110) adjacent said recess. 13. The mobile device of claim 12 wherein the speaker (122) is disposed within the cutout when the wireless headset (120) is secured within said recess. 25 14. The mobile device of claim 12 wherein the microphone (124) is disposed within the cutout when the wireless headset (120) is secured within said recess. WO 2005/120023 16 PCTAJS2004/019891 15. The mobile device of claim 7 wherein the recess is disposed on a back of the housing (110). 5 16. The mobile device of claim 15 wherein said recess is further disposed on at least one of a top, a front, and a side of the housing (110). 17. The mobile device of claim 2 wherein the speaker (122) is disposed proximate a top of the housing (110) when the wireless headset (120) is 10 mechanically connected to the housing (110). 18. The mobile device of claim 2 wherein the microphone (124) is disposed proximate a bottom portion of the housing (110) when the wireless headset (120) is mechanically connected to the housing (110). 15 19. The mobile device of claim 2 wherein the microphone (124) is disposed proximate a side of the housing (110) when the wireless headset (120) is mechanically connected to the housing (110). 20 20. The mobile device of claim 1 wherein the housing (110) further includes a wireless headset locator control (118). 21. The mobile device of claim 20 wherein the wireless headset (120) projects a locator signal when a user activates the wireless headset locator control (118). 25 22. The mobile device of claim 1 wherein the mobile terminal (105) comprises a cellular telephone. WO 2005/120023 17 PCT/US2004/019891 23. The mobile device of claim 3 wherein in the first mode the wireless headset (120) is fastened to the housing (110) such that the housing (110) and the wireless headset (120) form a single unit. 5 24. The mobile device of claim 23 wherein both the housing (110) and the wireless headset (120) each include at least one electrical contact (128, 138) such that when the wireless headset (120) is fastened to the housing (110), electrical signals are transferred between the mobile terminal (105) and the wireless 10 headset (120). 25. The mobile device of claim 24 wherein when the wireless headset (120) is fastened to the housing (110) and operating in the first mode, the speaker (122) and microphone (124) of the wireless headset (120) function as the speaker and 15 microphone for the mobile terminal (105). 26. The mobile device of claim 25 wherein the mobile terminal (105) does not include a speaker and microphone in the housing (110) and therefore is incapable of communicating audible signals with a user except in conjunction with the wireless 20 headset (120). 27. A mobile terminal comprising a detector circuit (246) to determine a position of a wireless headset (120) relative to the mobile terminal (105), wherein the mobile terminal (105) automatically establishes a wireless or electrical interface between the 25 mobile terminal (105) and the wireless headset (120) dependent on the determined position. WO 2005/120023 l8 PCT/US2004/019891 28. The mobile terminal of claim 27 wherein the wireless interface comprises a short-range wireless network. 29. The mobile terminal of claim 28 wherein the short-range wireless network 5 comprises a short-range ad hoc wireless network. 30. The mobile terminal of claim 27 wherein the mobile terminal (105) establishes the wireless interface between the mobile terminal (105) and the wireless headset (120) when the detector circuit (246) determines that the wireless 10 headset (120) is mechanically disconnected from the mobile terminal (105). 31. The mobile terminal of claim 27 wherein the mobile terminal (105) establishes the electrical interface between the mobile terminal (105) and the wireless headset (120) when the detector circuit (246) determines that the wireless 15 headset (120) is mechanically connected to the mobile terminal (105). 32. The mobile terminal of claim 31 wherein the detector circuit (246) determines that the wireless headset (120) is mechanically connected to the mobile terminal (105) when the detector circuit (246) detects electrical current flow between 20 the mobile terminal (105) and the wireless headset (120). 33. The mobile terminal of claim 32 wherein the detector circuit (246) detects electrical current flow between the mobile terminal (105) and the wireless headset (120) by detecting electrical current flow between mobile terminal circuitry 25 and headset circuitry. WO 2005/120023 19 PCT/US2004/019891 34. The mobile terminal of claim 27 wherein the mobile terminal (105) comprises a cellular telephone. 35. A method of selecting a communication interface between a mobile 5 terminal (105) and a wireless headset (120), the method comprising: determining if the wireless headset (120) is mechanically connected to the mobile terminal (105); automatically selecting an electrical-interface operating mode when the wireless headset (120) is mechanically connected to the mobile 10 terminal (105); and automatically selecting a wireless-interface operating mode when the wireless headset (120) is mechanically disconnected from the mobile terminal (105). 15 36. The method of claim 35 wherein determining if the wireless headset (120) is mechanically connected to the mobile terminal (105) comprises determining if the wireless headset (120) Is electrically connected to the mobile terminal (105). 37. The method of claim 36 wherein determining if the wireless headset (120) is 20 electrically connected to the mobile terminal (105) comprises determining if electrical current is flowing between the wireless headset (120) and the mobile terminal (105). 38. The method of claim 35 wherein automatically selecting a wireless-interface operating mode comprises establishing a short-range wireless network between the 25 mobile terminal (105) and the wireless headset (120). WO 2005/120023 20 PCT/US2004/019891 39. The method of claim 38 wherein establishing the short-range wireless network between the mobile terminal (105) and the wireless headset (120) comprises establishing a short-range ad hoc wireless network between the mobile terminal (105) and the wireless headset (120). 5 40. A mobile device (100) comprising: a headset (120); a mobile terminal (105); a detector circuit (246) for determining a position of the headset (120) relative 10 to the mobile terminal (105); and wherein the mobile device (100) automatically selects one of two operating modes responsive to the determined position of the headset (120). 41. The mobile device of claim 40 wherein the detector circuit (246) determines 15 the position of the headset (120) by determining if the headset (120) is mechanically connected to or disconnected from the mobile terminal (105). 42. The mobile device of claim 41 wherein the detector circuit (246) determines that the headset (120) is mechanically connected to the mobile terminal (105) when 20 the detector circuit (246) detects an electrical current flow between the mobile terminal (105) and the headset (120). 43. The mobile device of claim 41 wherein the mobile device (100) automatically selects an electrical operating mode when the headset (120) is mechanically 25 connected to the mobile terminal (105) and wherein the mobile device (100) automatically selects a wireless-interface operating mode when the headset (120) is mechanically disconnected from the mobile terminal (105). WO 2005/120023 21 PCT/US2004/019891 44. The mobile device of claim 41 wherein the headset (120) is mechanically connected to the mobile terminal (105) when the headset (120) is secured within a recess (130) disposed in at least one side of a housing (110) of the mobile 5 terminal (105). 45. The mobile device of claim 44 further comprising: a first electrical contact (138) disposed on a surface of the recess (130); a second electrical contact (128) disposed on a surface of the headset (120); 10 and wherein the first electrical contact (138) electrically connects to the second electrical contact (128) when the headset (120) is secured within the recess (130). 15 46. The mobile device of claim 44 wherein the recess (130) frictionally secures the headset (120) to the housing (110). 47. The mobile device of claim 40 wherein the headset (120) comprises a wireless headset. 20 48. The mobile device of claim 40 wherein the mobile terminal (105) comprises a cellular telephone. WO 2005/120023 22 PCT/US2004/019891 49. A mobile terminal (105) comprising: a speaker (122) for projecting audible signals to a user; a microphone (124) for receiving audible signals from the user; wherein said speaker (122) and microphone (124) interface with the mobile 5 terminal (105) via an electrical interface when said speaker (122) and microphone (124) are mechanically connected to the mobile terminal (105); and wherein said speaker (122) and microphone (124) interface with the mobile terminal (105) via a wireless interface when said speaker (122) and 10 microphone (124) are mechanically disconnected from the mobile terminal (105). 50. The mobile terminal of claim 49 wherein the wireless interface comprises a short-range wireless network. 15 51. The mobile terminal of claim 50 wherein the short-range wireless network comprises a short-range ad hoc wireless network. 52. The mobile terminal of claim 49 wherein the speaker (122) and 20 microphone (124) are disposed in a wireless headset (120). 53. The mobile terminal of claim 52 wherein the speaker (122) and microphone (124) are mechanically disconnected from the mobile terminal (105) when the wireless headset (120) is mechanically disconnected from the mobile 25 terminal (105). WO 2005/120023 23 PCT/US2004/019891 54. The mobile terminal of claim 52 wherein the speaker (122) and microphone (124) are mechanically connected to the mobile terminal (105) when the wireless headset (120) is mechanically connected to the mobile terminal (120). 5 55. The mobile terminal of claim 54 wherein the wireless headset (120) mechanically connects to the mobile terminal (105) when the wireless headset (120) is secured within a recess (130) on a housing (110) of the mobile terminal (105). 56. The mobile terminal of claim 55 wherein the recess (130) frictionally secures 10 the wireless headset (120) to the housing (110). 57. The mobile terminal of claim 52 wherein the wireless headset (120) further includes audio processing circuitry (212) to process the audible signals. 15 56. The mobile terminal of claim 57 wherein the audio processing circuitry (212) interfaces with the mobile terminal (105) via the electrical interface when the speaker (122) and microphone (124) are mechanically connected to the mobile terminal (105). 20 59. The mobile terminal of claim 57 wherein the audio processing circuitry (212) interfaces with the mobile terminal (105) via the wireless interface when the speaker (122) and microphone (124) are mechanically disconnected from the mobile terminal (105). 25 60. The mobile terminal of claim 52 further comprising a detector circuit (246) to determine a position of the wireless headset (120) relative to the mobile WO 2005/120023 24 PCTAJS2W04/019891 terminal (105) to determine if the speaker (122) and microphone (124) are mechanically connected to the mobile terminal (105). 61. The mobile terminal of claim 60 wherein the detector circuit (246) determines 5 if the speaker (122) and microphone (124) are mechanically connected to the mobile terminal (105) by determining if the speaker (122) and microphone (124) are electrically connected to the mobile terminal (105). 62. The mobile terminal of claim 61 wherein the detector circuit (246) determines 10 if the speaker (122) and microphone (124) are electrically connected to the mobile terminal (105) by detecting an electrical current flow between the mobile terminal (105) and the wireless headset (120). 63. The mobile terminal of claim 52 further comprising a headset locator (248) 15 wherein the speaker (122) projects a locator signal when the headset locator (248) is activated. 64. A mobile device and mobile terminal substantially as herein described with reference to the accompanying drawings. 65. A method of selecting a communication interface between a mobile terminal and a wireless headset substantially as herein described with reference to the accompanying drawings. Dated this 1st day of June, 2006. 25 ABSTRACT INTEGRATED WIRELESS HEADSET A mobile device integrates a wireless headset with the housing of a mobile terminal. In an exemplary embodiment, the housing of the mobile terminal includes a fastener for mechanically connecting the wireless headset to the housing. When the wireless headset is mechanically disconnected from the housing, a speaker and microphone associated with the wireless headset interfaces with the mobile terminal via a wireless interface. However, when the wireless headset mechanically connects to the housing, the speaker and microphone associated with the wireless headset mechanically and electrically connect to the housing and operate as the speaker and microphone for the mobile terminal. A detector circuit included in the mobile device also determines the position of the wireless headset relative to the mobile terminal, and may automatically select a wireless or electrical interface between the wireless headset and the mobile terminal based on the determined position.

Full Text

FORM 2
THE PATENTS ACT, 1970
(39 of 1970) &
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10, rule 13)
"INTEGRATED WIRELESS HEADSET"
SONY ERICSSON MOBILE COMMUNICATIONS
AB of Nya Vattentornet, S-221 88 Lund Sweden.

The following specification particularly describes the invention and the manner in which it is to be performed.

WO 2005/120023 PCT/US2004/019891
INTEGRATED WIRELESS HEADSET
BACKGROUND OF THE INVENTION
The present invention relates generally to wireless mobile devices, and more
5 particularly to a wireless headset integrated with a mobile device.
The popularity of mobile devices, such as cellular telephones, personal data assistants (PDAs), etc., continues to increase each year. To maintain this trend, manufacturers continue to explore ways to make mobile devices appeal to a larger percentage of the population. One area of focus involves hands-free wireless
10 communication where wireless headsets communicate with a local mobile device via a local wireless network.
Because wireless headsets free-up a user's hands while the user communicates with friends, family, and colleagues using their mobile device, users are free to perform other tasks, such as driving, shopping, etc. As a result, wireless
15 headsets increase the convenience of using a mobile device. However, because conventional wireless headsets are separate from mobile devices, a user has to separately track and carry the wireless headset. Further, users typically have to separately monitor the headset battery and charge the wireless headset battery on special headset chargers, which may be separate from the mobile device charger.
20 To many users, the inconvenience of having to separately maintain and track the wireless headset outweighs the convenience associated with using the wireless headset.
SUMMARY OF THE INVENTION
25 The present invention comprises a method and apparatus that integrates a
wireless headset with a mobile terminal. In an exemplary embodiment, the housing of the mobile terminal includes a fastener for mechanically connecting the wireless headset to the housing. When the wireless headset is mechanically connected to the

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housing, the wireless headset interfaces with the mobile terminal via an electrical
interface. Alternatively, when the wireless headset is mechanically disconnected
from the housing, the wireless headset interfaces with the mobile terminal via a
wireless interface.
5 In exemplary embodiments, the speaker and microphone associated with the
wireless headset also operate as the mobile terminal speaker and microphone. Thus, when the wireless headset is mechanically connected to the mobile terminal, the speaker and microphone of the wireless headset interface with the mobile terminal via an electrical interface and operate as a conventional speaker and
10 microphone for the mobile terminal. However, when the wireless headset is
mechanically disconnected from the mobile terminal, the speaker and microphone are also mechanically disconnected from the mobile terminal. As a result, the speaker and microphone interface with the mobile terminal via a wireless interface. Exemplary embodiments of the present invention may also include a detector
15 circuit to determine the position of the wireless headset relative to the mobile
terminal. The mobile device then automatically selects an operating mode based on the determined position. For example, if the detector circuit determines that the wireless headset is mechanically disconnected from the mobile terminal, the mobile terminal may automatically select a wireless-interface operating mode and establish
20 a wireless interface between the wireless headset and the mobile terminal. Alternatively, if the detector circuit determines that the wireless headset is mechanically connected to the mobile terminal, the mobile terminal may automatically select an electrical-interface operating mode, and establish an electrical interface between the wireless headset and the mobile terminal.

WO2W5/120023 PCTWS2004/019891
BRIEF DESCRIPTION OF THE DRAWINGS
Figures 1A - 1C illustrate a series of schematic views of an exemplary mobile device and wireless headset according to the present invention.
FIG. 2 illustrates a block diagram of an exemplary mobile device and wireless
5 headset operating in an electrical-interface operating mode according to the present invention.
FIG. 3 illustrates a block diagram of an exemplary mobile device and wireless
headset operating in a wireless-interface operating mode according to the present
invention.
10 FIG. 4 illustrates an exemplary method of determining the position of the
wireless headset relative to the mobile device.
DETAILED DESCRIPTION OF THE INVENTION
The following describes a cellular telephone with an integrated wireless
15 headset that operates in one of two operating modes. In a first operating mode, the wireless headset is mechanically and electrically connected to the cellular telephone such that the speaker and microphone of the wireless headset operate as the speaker and microphone of the cellular telephone. In the second operating mode, the wireless headset is mechanically and electrically disconnected from the cellular
20 telephone. In this mode, the speaker and microphone of the wireless headset interface with the cellular telephone via a wireless interface.
Figures 1A - 1C illustrate an exemplary mobile device 100 comprising a cellular telephone 105 and a wireless headset 120 according to the present invention. While the present invention is described in terms of a cellular telephone,
25 those skilled in the art will appreciate that the present invention is applicable to any mobile device, including a clamshell cellular telephone, a Personal Communication System (PCS), a Personal Digital Assistant (PDA), a conventional laptop and/or

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palmtop receiver, or any other mobile device that includes a radiotelephone transceiver.
Mobile device 100 includes a cellular telephone 105 with an associated housing 110 and a wireless headset 120. Housing 110 encases the electrical
5 components of the cellular telephone 105 and typically includes user interface components, such as a display 112, keypad 114, and/or control buttons 116 disposed on the outer surface of housing 110. A user interfaces with the cellular telephone 105 according to any conventional method. For example, the user may interface with cellular telephone 105 via the user interface components, as known in
10 the art. Alternatively, cellular telephone 105 may include voice recognition
capabilities that allow the user to interface with cellular telephone 105 using voice commands.
Wireless headset 120 is a hands-free communication device that enables a user to communicate with the cellular telephone 105 using a local wireless interface.
15 In exemplary embodiments, the local wireless interface comprises a short-range ad hoc wireless network, such as a Bluetooth* network. A Bluetooth* network is a universal radio interface that enables two or more wireless devices to communicate wirelessly via short-range ad hoc networks. For further details regarding Bluetooth* technology, the interested reader may refer to "Bluetooth - The universal radio
20 interface for ad hoc, wireless connectivity," presented by Jaap Haartsen in Ericsson Review No. 3,1998, which is herein incorporated by reference. While the present application refers to a short-range ad hoc wireless network as a "Bluetooth® network," those skilled in the art will appreciate that the present invention is not limited to Bluetooth® networks and is applicable to any wireless interface between a cellular
25 telephone 105 and a wireless headset 120.
Wireless headset 120 generally includes a speaker 122 for projecting audible signals to a user, a microphone 124 for receiving audible signals from a user, and a

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support for securing the wireless headset 120 to the head of a user, such as an ear support 126. Further, wireless headset 120 may include a pivot connector 129 that pivotally connects the ear support 126 to the microphone 124, and enables the user to position the microphone 124 at any desired location relative to the ear support 126
5 by rotating the microphone 124 about pivot connector 129.
Pivot connector 129 also enables the wireless headset 120 to be positioned into a compact arrangement that can be integrated and stored with cellular telephone 105 using a fastener. The fastener may be any fastening means known in the art, including straps, brackets, clips, etc., that secures the wireless headset 120 to the
10 housing 110. In an exemplary embodiment, the fastener is a recess 130 disposed in housing 110, as shown in Figure 1C. Recess 130 is generally designed to secure the wireless headset 120 to housing 110. In one exemplary embodiment, recess 130 may frictionally hold the wireless headset 120 to the housing 110. Alternatively, in another exemplary embodiment, recess 130 may include a latch, such as a magnetic
15 latch, a spring clip, etc., that holds wireless headset 120 within the recess 130. In any event, the user may secure the wireless headset 120 to the housing 110 by pushing the wireless headset 120 into the recess. When the user is ready to use wireless headset 120, the user may remove the wireless headset 120 from the recess 130 by pulling on the wireless headset 120 or by pressing a release button
20 (not shown) disposed on the housing 110 to release the wireless headset 120 from the recess 130.
Recess 130 includes a speaker area 132 adapted to receive speaker 122, a microphone area 134 adapted to receive microphone 124, and an ear support area 136 adapted to receive ear support 126. In exemplary embodiments, the shapes of
25 the speaker, microphone, and ear support areas 132,134,136 complement the shapes of the speaker 122, microphone 124, and ear support 126, respectively.

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Further, the depth of recess 130 may be structured such that the wireless headset 120 is flush with the housing 110 when secured within the recess 130.
As shown in Figure 1C, recess 130 is positioned generally on a back of housing 110. Those skilled in the art, however, will appreciate that the recess 130 is
5 not limited to this configuration, and may be formed on any portion of the housing 110 as appropriate for a given wireless headset 120 and cellular telephone 105. In the embodiment of Figure 1C, microphone area 134 is generally positioned proximate a side and/or bottom of housing 110, while speaker area 132 is generally positioned proximate the top of housing 110. Further, microphone area 134 may
10 include an additional cutout section in a side of the housing 110 that positions the microphone 124 proximate the front of the housing 110 when wireless headset 120 is secured within the recess 130. The microphone cutout section may extend to the front of the housing 110, as shown in Figures 1A and 1C. Alternatively, the microphone cutout section may only extend through a portion of the side of the
15 housing 110. Speaker area 132 may also include an additional cutout section in the top of housing 110 that enables speaker 122 to extend to the front of the housing 110 when wireless headset 120 is secured within the recess 130. As a result, when wireless headset 120 is secured within recess 130, the speaker 122 and microphone 124 are positioned proximate the locations conventionally reserved for the speaker
20 and microphone of a conventional cellular telephone 105. Therefore, in addition to functioning as the primary speaker and microphone for the wireless headset 120, speaker 122 and microphone 124 also function as the primary speaker and microphone for the cellular telephone 105 when the wireless headset 120 is secured to the housing 110.
25 To facilitate using the speaker 122 and microphone 124 as the speaker and
microphone of cellular telephone 105, cellular telephone 105 also includes electrical interface means, such as a connector or electrical contact, to electrically interface the

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wireless headset 120 with the cellular telephone 105 when the wireless headset 120 is mechanically secured to the housing 110. In an exemplary embodiment, the electrical interface includes an electrical contact 138 disposed on a surface of the recess 130 that mates with a corresponding electrical contact 128 disposed on
5 wireless headset 120. Accordingly, when wireless headset 120 is secured within recess 130, electrical contacts 128,138 electrically connect the wireless headset 120 to the cellular telephone 105. While Figure 1C only shows one electrical contact 128, 138, those skilled in the art will appreciate that more than one electrical contact 128 may electrically connect wireless headset 120 to cellular telephone 105.
10 Referring now to Figures 2-4, operational details of the present invention will
be described further. Figures 2 and 3 illustrate a block diagram of an exemplary mobile device 100. To facilitate the following discussions, each illustrated component of mobile device 100 is shown as a separate element. However, those skilled in the art wilt appreciate that two or more of these components may be
15 combined into a single microprocessor, application specific integrated circuit, or other suitable circuit.
Mobile device 100 includes headset electronics 210 associated with wireless headset 120 and mobile device electronics 230 associated with cellular telephone 105. Headset electronics 210 include a headset controller 214 for controlling the
20 headset electronics 210 and a headset battery 216 for providing power to the headset electronics 210. Headset electronics 210 further include speaker 122 for projecting audible signals to a user, microphone 124 for receiving audible signals from the user, and an audio processor 212. Audio processor 212 processes audio signals received from the mobile device electronics 230 according to known
25 methods, and provides the processed audio signals to speaker 122 for projection to the user. Audio processor 212 further processes audible signals received by microphone 124 according to known methods, and forwards the processed audio

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signals to the mobile device electronics 230. As discussed further below, audio processor 212 transmits/receives audio signals to/from the mobile device electronics 230 via an electrical or wireless interface, depending on the current operating mode of the mobile device 100. To that end, headset electronics 210 further include a
5 wireless transmitter, such as a Bluetooth® transceiver 218 and antenna 220 for communicating with the mobile device electronics 230 via the wireless interface according to instructions provided by headset controller 214.
Mobile device electronics 230 include a transceiver 232 for transmitting/receiving information signals to/from a base station via a cellular antenna
10 234. Transceiver 232 may operate according to any known standard, including GSM, TIA/EIA-136, cdmaOne, IS-95, cdma2000, UMTS, or Wideband CDMA.
Mobile device electronics 230 also includes a power management circuit 236, mobile battery 238, mobile controller 240, and local wireless transmitter, such as a Bluetooth® transceiver 242 and antenna 244. Power management circuit 236
15 monitors and regulates the power of the mobile battery 238 according to known
power management techniques. For example, power management circuit 236 may monitor the power level of the mobile battery 238, regulate a power dissipation rate of the mobile battery 238, and/or regulate and control the charging process used to charge mobile battery 238. In addition to the conventional power management of
20 mobile battery 238, power management circuit 236 may also manage the power of headset battery 216 when power management circuit 236 is electrically connected to the headset battery 216. For example, power management circuit 236 may charge headset battery 216 and/or provide power to the headset electronics 210 via the headset battery 216.
25 The operation of the power management circuit 236 and the operations of
other components in the mobile device electronics 230 is controlled by mobile controller 240 according to known techniques. Mobile controller 240 may also control

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the operating mode of the cellular telephone 105, and typically controls the operation of Bluetooth® transceiver 242 and antenna 244 based on the operating mode. For example, mobile controller 240 may enable an electrical-interface operating mode when there is an electrical connection between headset electronics 210 and mobile
5 device electronics 230, i.e., when wireless headset 120 is mechanically connected to housing 110, as shown in Figure 1B and functionally represented by Figure 2. In the electrical-interface operating mode, mobile controller 240 disables the Bluetooth® transceiver 242 and antenna 244, and relies solely on the electrical connections made by electrical contacts 128,138 to provide a communication path between
10 mobile device electronics 230 and headset electronics 210.
However, when there is no electrical connection between headset electronics 210 and mobile device electronics 230, such as when the wireless headset 120 is mechanically disconnected from the housing 110, as shown in Figure 1C and functionally represented by Figure 3, mobile controller 240 may enable a wireless-
15 interface operating mode. In the wireless-interface operating mode, mobile controller 240 enables the Bluetooth® transceiver 242 and antenna 244 to establish a wireless interface between the headset electronics 210 and the mobile device electronics 230 according to Bluetooth® protocols known in the art.
In addition to the above-described components, mobile device electronics 230
20 also includes a mode control, such as headset detector 246, that indicates a desired operating mode to the mobile controller 240. Headset detector 246 selects a desired operating mode, i.e., an electrical-interface or wireless-interface operating mode according to a mode-related user input. In some embodiments, headset detector 246 selects the operating mode based on a command entered via the user interface or
25 the position of a switch disposed on the housing 110.
Alternatively, in a preferred embodiment of the present invention, headset detector 246 automatically selects the operating mode based on the user-selected

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location of the wireless headset 120 relative to the cellular telephone 105. For example, headset detector 246 may select the operating mode based on whether or not the wireless headset 120 is mechanically connected to the housing. In exemplary embodiments of the present invention, headset detector 246 determines if
5 the wireless headset 120 is mechanically connected to housing 110 by determining if an electrical connection exists between the headset electronics 210 and the mobile device electronics 230. For example, headset detector 246 may monitor an electrical trace in the mobile device electronics 230, such as trace 233, to determine if there is current flowing between the mobile device electronics 230 and the headset
10 electronics 210. When an electrical current flow is detected, headset detector 246 determines that the headset electronics 210 are electrically connected to the mobile device electronics 230. Alternatively, headset detector 246 may monitor the power management circuit 236 to determine if the power management circuit 236 is providing electrical current to the headset electronics 210. In any event, when
15 electrical current is flowing between the mobile device electronics 230 and headset electronics 210, headset detector 246 determines that the wireless headset 120 is mechanically connected to the housing 110, and selects the electrical-interface operating mode; when no electrical current flow is detected, headset detector 246 determines that the wireless headset is mechanically disconnected from the housing
20 110, and selects the wireless-interface operating mode.
In addition to headset detector 246, mobile device electronics 230 may also include an optional headset locator 248 operatively connected to a locator button 118 disposed on housing 110. In response to the user activating the locator button 118, headset locator 248 transmits a locator request signal to the wireless headset 120.
25 Upon receipt of the locator request signal, wireless headset 120 projects a locator signal, such as a visible and/or audible signal from the wireless headset 120. The

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user may then locate wireless headset 120 by seeing and/or hearing the locator signal projected from wireless headset 120.
Referring now to Figure 4, an exemplary method of headset detection and location will be described. Mobile device electronics 230 begin the headset detection
5 loop (Block 300) at any appropriate time, i.e., when mobile device 100 powers up. Headset detector 246 then determines if the wireless headset 120 is mechanically connected to the housing 110 according to any of the methods described above (Block 302). If wireless headset 120 is mechanically connected to the housing 110, mobile device 100 operates in the electrical-interface operating mode (Block 304).
10 However, if wireless headset 120 is mechanically disconnected from the housing 110, mobile device 100 operates in the wireless-interface operating mode and establishes the wireless interface between the mobile device electronics 230 and the headset electronics 210 (Block 306).
In some embodiments, the output of Block 306 may return to Block 302,
15 where control of the headset detection loop is maintained in the headset detector 246, and the process of Blocks 302 - 306 is repeated. However, if mobile device electronics 230 includes a headset locator 248, the output of Block 306 may continue to Block 308, where control of the headset detection loop is transferred to headset locator 248. Headset locator 248 then determines if locator button 118 has been
20 activated (Block 308). If locator button 118 has not been activated, control of the headset detection loop returns to the headset detector 246, and the process of Blocks 302 - 308 repeats. However, if locator button 118 has been activated, headset locator 248 triggers the locator signal (Block 310) before returning control of the headset detection loop to the headset detector 246, where the process of Blocks
25 302 - 308 repeats.
The above discloses a cellular telephone 105 with an integrated wireless headset 120. Because the wireless headset 120 may be electrically and

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mechanically integrated with the cellular telephone 105, the present invention includes several benefits over conventional mobile device/wireless headset combinations. First, because the wireless headset 120 is integral with the housing 110 of the cellular telephone 105, wireless headset 120 is readily available anytime
5 the user has their cellular telephone 105 with them. Further, because the headset electronics 210 are electrically connected to the mobile device electronics 230 when the wireless headset 120 is mechanically connected to the housing 110, the headset battery 216 may be charged at the same time as, and with the same charger as, the mobile battery 238. As a result, only one charger is required to charge the mobile
10 and headset batteries 238, 216. In addition, in the embodiments where the headset detector 246 automatically determines the position of the wireless headset 120, a user can activate the wireless-interface mode simply by removing the wireless headset 120 from housing 110. As a result, the user does not have to track the operating mode of cellular telephone 105.
15 The present invention may, of course, be carried out in other ways than those
specifically set forth herein without departing from essential characteristics of the invention. The present embodiments are to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.
20

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CLAIMS What is claimed is:
1. A mobile device (100) comprising:
a mobile terminal (105) with an associated housing (110);
5 a wireless headset (120); and
a fastener (130) disposed on the housing (110) for mechanically connecting the wireless headset (120) to the housing (110).
2. The mobile device of claim 1 wherein the wireless headset (120) includes a
10 speaker (122) and a microphone (124).
3. The mobile device of claim 2 wherein the wireless headset (120) is adapted to
operate in a first operating mode when mechanically connected to the housing (110)
and further wherein the wireless headset (120) is adapted to operate in a second
15 operating mode when mechanically disconnected from the housing (110).
4. The mobile device of claim 3 wherein the wireless headset (120) interfaces
with the mobile terminal (105) via a wireless interface when said wireless
headset (120) is operating in the second operating mode.
20
5. The mobile device of claim 3 wherein the wireless headset (120) interfaces
with the mobile terminal (105) via an electrical interface when said wireless
headset (120) is operating in the first operating mode.
25 6. The mobile device of claim 5 further comprising a first electrical contact (138) disposed on the housing (110) and a second electrical contact (128) disposed on the wireless headset (120), wherein the first electrical contact (138) electrically connects

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to the second electrical contact (128) when said wireless headset (120) is operating in the first operating mode.
7. The mobile device of claim 2 wherein the fastener (130) comprises a recess
5 disposed on the housing (110) for receiving the wireless headset.
8. The mobile device of claim 7 wherein the recess is configured to secure the
wireless headset (120) to the housing (110).
10 9. The mobile device of claim 7 wherein the recess is configured to frictionally secure the wireless headset (120) to the housing (110).
10. The mobile device of claim 7 wherein the wireless headset (120)
mechanically connects to the housing (110) when the wireless headset (120) is
15 secured within said recess.
11. The mobile device of claim 7 wherein the wireless headset (120) is flush with
the housing (110) when the wireless headset (120) is secured within said recess.
20 12. The mobile device of claim 7 wherein the fastener (130) further comprises a cutout in a side of the housing (110) adjacent said recess.
13. The mobile device of claim 12 wherein the speaker (122) is disposed within
the cutout when the wireless headset (120) is secured within said recess.
25
14. The mobile device of claim 12 wherein the microphone (124) is disposed
within the cutout when the wireless headset (120) is secured within said recess.

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15. The mobile device of claim 7 wherein the recess is disposed on a back of the housing (110).
5 16. The mobile device of claim 15 wherein said recess is further disposed on at least one of a top, a front, and a side of the housing (110).
17. The mobile device of claim 2 wherein the speaker (122) is disposed
proximate a top of the housing (110) when the wireless headset (120) is
10 mechanically connected to the housing (110).
18. The mobile device of claim 2 wherein the microphone (124) is disposed
proximate a bottom portion of the housing (110) when the wireless headset (120) is
mechanically connected to the housing (110).
15
19. The mobile device of claim 2 wherein the microphone (124) is disposed
proximate a side of the housing (110) when the wireless headset (120) is
mechanically connected to the housing (110).
20 20. The mobile device of claim 1 wherein the housing (110) further includes a wireless headset locator control (118).
21. The mobile device of claim 20 wherein the wireless headset (120) projects a
locator signal when a user activates the wireless headset locator control (118).
25
22. The mobile device of claim 1 wherein the mobile terminal (105) comprises a
cellular telephone.

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23. The mobile device of claim 3 wherein in the first mode the wireless
headset (120) is fastened to the housing (110) such that the housing (110) and the
wireless headset (120) form a single unit.
5
24. The mobile device of claim 23 wherein both the housing (110) and the
wireless headset (120) each include at least one electrical contact (128, 138) such
that when the wireless headset (120) is fastened to the housing (110), electrical
signals are transferred between the mobile terminal (105) and the wireless
10 headset (120).
25. The mobile device of claim 24 wherein when the wireless headset (120) is
fastened to the housing (110) and operating in the first mode, the speaker (122) and
microphone (124) of the wireless headset (120) function as the speaker and
15 microphone for the mobile terminal (105).
26. The mobile device of claim 25 wherein the mobile terminal (105) does not
include a speaker and microphone in the housing (110) and therefore is incapable of
communicating audible signals with a user except in conjunction with the wireless
20 headset (120).
27. A mobile terminal comprising a detector circuit (246) to determine a position
of a wireless headset (120) relative to the mobile terminal (105), wherein the mobile
terminal (105) automatically establishes a wireless or electrical interface between the
25 mobile terminal (105) and the wireless headset (120) dependent on the determined position.

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28. The mobile terminal of claim 27 wherein the wireless interface comprises a
short-range wireless network.
29. The mobile terminal of claim 28 wherein the short-range wireless network
5 comprises a short-range ad hoc wireless network.
30. The mobile terminal of claim 27 wherein the mobile terminal (105) establishes
the wireless interface between the mobile terminal (105) and the wireless
headset (120) when the detector circuit (246) determines that the wireless 10 headset (120) is mechanically disconnected from the mobile terminal (105).
31. The mobile terminal of claim 27 wherein the mobile terminal (105) establishes
the electrical interface between the mobile terminal (105) and the wireless
headset (120) when the detector circuit (246) determines that the wireless
15 headset (120) is mechanically connected to the mobile terminal (105).
32. The mobile terminal of claim 31 wherein the detector circuit (246) determines
that the wireless headset (120) is mechanically connected to the mobile
terminal (105) when the detector circuit (246) detects electrical current flow between 20 the mobile terminal (105) and the wireless headset (120).
33. The mobile terminal of claim 32 wherein the detector circuit (246) detects
electrical current flow between the mobile terminal (105) and the wireless
headset (120) by detecting electrical current flow between mobile terminal circuitry
25 and headset circuitry.

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34. The mobile terminal of claim 27 wherein the mobile terminal (105) comprises
a cellular telephone.
35. A method of selecting a communication interface between a mobile
5 terminal (105) and a wireless headset (120), the method comprising:
determining if the wireless headset (120) is mechanically connected to the
mobile terminal (105); automatically selecting an electrical-interface operating mode when the
wireless headset (120) is mechanically connected to the mobile
10 terminal (105); and
automatically selecting a wireless-interface operating mode when the wireless
headset (120) is mechanically disconnected from the mobile
terminal (105).
15 36. The method of claim 35 wherein determining if the wireless headset (120) is mechanically connected to the mobile terminal (105) comprises determining if the wireless headset (120) Is electrically connected to the mobile terminal (105).
37. The method of claim 36 wherein determining if the wireless headset (120) is
20 electrically connected to the mobile terminal (105) comprises determining if electrical
current is flowing between the wireless headset (120) and the mobile terminal (105).
38. The method of claim 35 wherein automatically selecting a wireless-interface
operating mode comprises establishing a short-range wireless network between the
25 mobile terminal (105) and the wireless headset (120).

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20 PCT/US2004/019891

39. The method of claim 38 wherein establishing the short-range wireless
network between the mobile terminal (105) and the wireless headset (120) comprises
establishing a short-range ad hoc wireless network between the mobile
terminal (105) and the wireless headset (120).
5
40. A mobile device (100) comprising:
a headset (120);
a mobile terminal (105);
a detector circuit (246) for determining a position of the headset (120) relative
10 to the mobile terminal (105); and
wherein the mobile device (100) automatically selects one of two operating modes responsive to the determined position of the headset (120).
41. The mobile device of claim 40 wherein the detector circuit (246) determines
15 the position of the headset (120) by determining if the headset (120) is mechanically
connected to or disconnected from the mobile terminal (105).
42. The mobile device of claim 41 wherein the detector circuit (246) determines
that the headset (120) is mechanically connected to the mobile terminal (105) when
20 the detector circuit (246) detects an electrical current flow between the mobile terminal (105) and the headset (120).
43. The mobile device of claim 41 wherein the mobile device (100) automatically
selects an electrical operating mode when the headset (120) is mechanically
25 connected to the mobile terminal (105) and wherein the mobile device (100)
automatically selects a wireless-interface operating mode when the headset (120) is mechanically disconnected from the mobile terminal (105).

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44. The mobile device of claim 41 wherein the headset (120) is mechanically
connected to the mobile terminal (105) when the headset (120) is secured within a
recess (130) disposed in at least one side of a housing (110) of the mobile
5 terminal (105).
45. The mobile device of claim 44 further comprising:
a first electrical contact (138) disposed on a surface of the recess (130);
a second electrical contact (128) disposed on a surface of the headset (120);
10 and
wherein the first electrical contact (138) electrically connects to the second
electrical contact (128) when the headset (120) is secured within the
recess (130).
15 46. The mobile device of claim 44 wherein the recess (130) frictionally secures the headset (120) to the housing (110).
47. The mobile device of claim 40 wherein the headset (120) comprises a
wireless headset.
20
48. The mobile device of claim 40 wherein the mobile terminal (105) comprises a
cellular telephone.

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49. A mobile terminal (105) comprising:
a speaker (122) for projecting audible signals to a user;
a microphone (124) for receiving audible signals from the user;
wherein said speaker (122) and microphone (124) interface with the mobile
5 terminal (105) via an electrical interface when said speaker (122) and
microphone (124) are mechanically connected to the mobile
terminal (105); and wherein said speaker (122) and microphone (124) interface with the mobile
terminal (105) via a wireless interface when said speaker (122) and
10 microphone (124) are mechanically disconnected from the mobile
terminal (105).
50. The mobile terminal of claim 49 wherein the wireless interface comprises a
short-range wireless network.
15
51. The mobile terminal of claim 50 wherein the short-range wireless network
comprises a short-range ad hoc wireless network.
52. The mobile terminal of claim 49 wherein the speaker (122) and
20 microphone (124) are disposed in a wireless headset (120).
53. The mobile terminal of claim 52 wherein the speaker (122) and
microphone (124) are mechanically disconnected from the mobile terminal (105)
when the wireless headset (120) is mechanically disconnected from the mobile
25 terminal (105).

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54. The mobile terminal of claim 52 wherein the speaker (122) and
microphone (124) are mechanically connected to the mobile terminal (105) when the
wireless headset (120) is mechanically connected to the mobile terminal (120).
5 55. The mobile terminal of claim 54 wherein the wireless headset (120)
mechanically connects to the mobile terminal (105) when the wireless headset (120) is secured within a recess (130) on a housing (110) of the mobile terminal (105).
56. The mobile terminal of claim 55 wherein the recess (130) frictionally secures
10 the wireless headset (120) to the housing (110).
57. The mobile terminal of claim 52 wherein the wireless headset (120) further
includes audio processing circuitry (212) to process the audible signals.
15 56. The mobile terminal of claim 57 wherein the audio processing circuitry (212) interfaces with the mobile terminal (105) via the electrical interface when the speaker (122) and microphone (124) are mechanically connected to the mobile terminal (105).
20 59. The mobile terminal of claim 57 wherein the audio processing circuitry (212) interfaces with the mobile terminal (105) via the wireless interface when the speaker (122) and microphone (124) are mechanically disconnected from the mobile terminal (105).
25 60. The mobile terminal of claim 52 further comprising a detector circuit (246) to determine a position of the wireless headset (120) relative to the mobile

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24

PCTAJS2W04/019891

terminal (105) to determine if the speaker (122) and microphone (124) are mechanically connected to the mobile terminal (105).
61. The mobile terminal of claim 60 wherein the detector circuit (246) determines
5 if the speaker (122) and microphone (124) are mechanically connected to the mobile
terminal (105) by determining if the speaker (122) and microphone (124) are electrically connected to the mobile terminal (105).
62. The mobile terminal of claim 61 wherein the detector circuit (246) determines
10 if the speaker (122) and microphone (124) are electrically connected to the mobile
terminal (105) by detecting an electrical current flow between the mobile terminal (105) and the wireless headset (120).
63. The mobile terminal of claim 52 further comprising a headset locator (248)
15 wherein the speaker (122) projects a locator signal when the headset locator (248) is activated.

64. A mobile device and mobile terminal substantially as herein described with reference to the accompanying drawings.
65. A method of selecting a communication interface between a mobile terminal and a wireless headset substantially as herein described with reference to the accompanying drawings.

Dated this 1st day of June, 2006.

25
ABSTRACT
INTEGRATED WIRELESS HEADSET
A mobile device integrates a wireless headset with the housing of a mobile terminal. In an exemplary embodiment, the housing of the mobile terminal includes a fastener for mechanically connecting the wireless headset to the housing. When the wireless headset is mechanically disconnected from the housing, a speaker and microphone associated with the wireless headset interfaces with the mobile terminal via a wireless interface. However, when the wireless headset mechanically connects to the housing, the speaker and microphone associated with the wireless headset mechanically and electrically connect to the housing and operate as the speaker and microphone for the mobile terminal. A detector circuit included in the mobile device also determines the position of the wireless headset relative to the mobile terminal, and may automatically select a wireless or electrical interface between the wireless headset and the mobile terminal based on the determined position.

Documents:

639-MUMNP-2006-ABSTRACT(GRANTED)-(27-1-2012).pdf

639-mumnp-2006-abstract.doc

639-mumnp-2006-abstract.pdf

639-MUMNP-2006-CANCELLED PAGES(30-12-2011).pdf

639-MUMNP-2006-CLAIMS(AMENDED)-(27-5-2011).pdf

639-MUMNP-2006-CLAIMS(AMENDED)-(30-12-2011).pdf

639-MUMNP-2006-CLAIMS(GRANTED)-(27-1-2012).pdf

639-MUMNP-2006-CLAIMS(MARKED COPY)-(30-12-2011).pdf

639-mumnp-2006-claims.doc

639-mumnp-2006-claims.pdf

639-mumnp-2006-correspondance-received-ver-010607.pdf

639-mumnp-2006-correspondance-received-ver-190706.pdf

639-MUMNP-2006-CORRESPONDENCE(20-7-2006).pdf

639-mumnp-2006-correspondence(27-11-2007).pdf

639-MUMNP-2006-CORRESPONDENCE(IPO)-(12-4-2012).pdf

639-mumnp-2006-description (complete).pdf

639-MUMNP-2006-DESCRIPTION(GRANTED)-(27-1-2012).pdf

639-mumnp-2006-drawing(2-6-2006).pdf

639-MUMNP-2006-DRAWING(27-5-2011).pdf

639-MUMNP-2006-DRAWING(GRANTED)-(27-1-2012).pdf

639-mumnp-2006-drawings.pdf

639-MUMNP-2006-EP DOCUMENT(30-12-2011).pdf

639-mumnp-2006-form 18(27-11-2007).pdf

639-MUMNP-2006-FORM 2(GRANTED)-(27-1-2012).pdf

639-mumnp-2006-form 2(title page)-(2-6-2006).pdf

639-MUMNP-2006-FORM 2(TITLE PAGE)-(GRANTED)-(27-1-2012).pdf

639-mumnp-2006-form 26(1-8-2006).pdf

639-mumnp-2006-form 3(2-6-2006).pdf

639-MUMNP-2006-FORM 3(27-5-2011).pdf

639-mumnp-2006-form 3(8-1-2007).pdf

639-mumnp-2006-form 3(9-11-2006).pdf

639-mumnp-2006-form 5(2-6-2006).pdf

639-mumnp-2006-form-1.pdf

639-mumnp-2006-form-2.doc

639-mumnp-2006-form-2.pdf

639-MUMNP-2006-JAPANESE DOCUMENT(30-12-2011).pdf

639-MUMNP-2006-PETITION UNDER RULE 137(27-5-2011).pdf

639-MUMNP-2006-REPLY TO EXAMINATION REPORT(27-5-2011).pdf

639-MUMNP-2006-REPLY TO EXAMINATION REPORT(30-12-2011).pdf

639-MUMNP-2006-US PATENT(27-5-2011).pdf

639-mumnp-2006-wo international publication report(2-6-2006).pdf

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Patent Number

250778

Indian Patent Application Number

639/MUMNP/2006

PG Journal Number

04/2012

Publication Date

27-Jan-2012

Grant Date

27-Jan-2012

Date of Filing

02-Jun-2006

Name of Patentee

SONY ERICSSON MOBILE COMMUNICATION AB

Applicant Address

Nya Vattentornet,S-221 88 Lund,

Inventors:

#	Inventor's Name	Inventor's Address
1	MICHALAK,Gerald P.	921 Woodway Bluff Circle,Cary,NC 27513,

PCT International Classification Number

H04M1/05 H04M1/02

PCT International Application Number

PCT/US2004/019891

PCT International Filing date

2004-06-22

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	10/736,814	2003-12-16	U.S.A.