| Title of Invention | A METHOD AND SYSTEM FOR SIGNAL ENCODING |
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| Abstract | The invention relates to a signal encoding system (100). A pre-encoder (103) encodes a signal and generates a pre-encoded signal. In addition the pre-encoder (103) generates encoding assistance data which is stored in a signal storage (105) together with the pre-encoded signal. When the signal is retrieved from the signal storage (105), it is decoded in a decoder (111) and a watermark is inserted in the decoded signal to generate a watermarked signal. The watermarked signal is then re-encoded, possibly at a different encoding rate, in a re-encoder (117). The re-encoder (117) is operable to re-encode the watermarked signal in response to the encoding assistance data. Thus, encoding assistance data may be generated at encoding prior to storage and the encoding assistance data may be used to facilitate re-encoding of a watermarked signal when retrieved. The invention is particular advantageous for applications wherein pre-encoding is performed once whereas re-encoding is frequently performed, such as for example a client-server music download application. |
| Full Text | The invention relates to a signal encoding system (100). A pre-encoder (103) encodes a signal and generates a pre-encoded signal. In addition the pre-encoder (103) generates encoding assistance data which is stored in a signal storage (105) together with the pre-encoded signal. When the signal is retrieved from the signal storage (105), it is decoded in a decoder (111) and a watermark is inserted in the decoded signal to generate a watermarked signal. The watermarked signal is then re-encoded, possibly at a different encoding rate, in a re-encoder (117). The re-encoder (117) is operable to re-encode the watermarked signal in response to the encoding assistance data. Thus, encoding assistance data may be generated at encoding prior to storage and the encoding assistance data may be used to facilitate re-encoding of a watermarked signal when retrieved. The invention is particular advantageous for applications wherein pre-encoding is performed once whereas re-encoding is frequently performed, such as for example a client-server music download application. |
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| Patent Number | 230662 | |||||||||
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| Indian Patent Application Number | 1731/CHENP/2006 | |||||||||
| PG Journal Number | 13/2009 | |||||||||
| Publication Date | 27-Mar-2009 | |||||||||
| Grant Date | 27-Feb-2009 | |||||||||
| Date of Filing | 17-May-2006 | |||||||||
| Name of Patentee | KONINKLIJKE PHILIPS ELECTRONICS N.V | |||||||||
| Applicant Address | Groenewoudseweg 1, NL-5621 BA Eindhoven, | |||||||||
Inventors:
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| PCT International Classification Number | G10L19/14 | |||||||||
| PCT International Application Number | PCT/IB2004/051948 | |||||||||
| PCT International Filing date | 2004-10-01 | |||||||||
PCT Conventions:
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