Title of Invention	"A HYBRID STRUCTURE"
Abstract	A hybrid disc (300) whose recordable-band gooves are wider and shallower than the pre-recorded ROM data pits (330, 331, 332). The ROM pits (330, 331, 332) may be p re-recorded in ROM grooves (320, 321) that are at least as wide, but shallower than, the ROM pits (330, 331, 332). The ROM pits ((330, 331, 332), whether or not a ROM groove (330, 321) is provided. In the preferred embodiment, one beam (102) of a dual beam apparatus records the ROM pits (330, 331, 332) while the other beam (103) records the preOrgrooves, and also records the ROM groove, if present. In most embodiments a thermal mastering process provides smooth feature surfaces to facilitate replication of the hybrid disc masters. The berms (70a, b) normally forming at the radial eztremities of the pits (50) and gooves (75) in the masters, by thermal expulsion processes, may be reduced or eliminated by methods taught.

Title of Invention

"A HYBRID STRUCTURE"

Abstract

A hybrid disc (300) whose recordable-band gooves are wider and shallower than the pre-recorded ROM data pits (330, 331, 332). The ROM pits (330, 331, 332) may be p re-recorded in ROM grooves (320, 321) that are at least as wide, but shallower than, the ROM pits (330, 331, 332). The ROM pits ((330, 331, 332), whether or not a ROM groove (330, 321) is provided. In the preferred embodiment, one beam (102) of a dual beam apparatus records the ROM pits (330, 331, 332) while the other beam (103) records the preOrgrooves, and also records the ROM groove, if present. In most embodiments a thermal mastering process provides smooth feature surfaces to facilitate replication of the hybrid disc masters. The berms (70a, b) normally forming at the radial eztremities of the pits (50) and gooves (75) in the masters, by thermal expulsion processes, may be reduced or eliminated by methods taught.

Full Text	DESCRIPTION (COMPLETE) OCR NOT PREPARE DUE TO PRINT PROBLEM We claim: I A hybrid structure comprising: a. a first region storing selectively retrievable data in a data layer ol substantially uniform composition containing a substantially planar first level, (1) a quantum of said data represented by a three-dimensional first data feature in said first region, said first region containing a plurality of said first data features successively along a first track segment in said firsl region, each first data feature having a first data feature longitudinal extent, a microscopic first data feature transverse extent normal to said first data feature longitudinal extent and co-planar therewith in a first data feature plane at said first level and a microscopic first data feature vertical extent normal to said first data feature plane, at least a portion of said first data feature vertically displaced from said first level, said first data feature further characterized in that: (a) the outer shape of said first data feature, defined by a transverse section thereof displays no substantial slope discontinuity from the point at which said first data feature begins its displacement in a vertical direction from an index level defined in respect to said structure, at one transverse edge of said first data feature, until the point at which said vertical displacement from said index level ends at the opposite transverse edge of said first data feature; (b) the vertical expanse of said first data feature in respect to said index level, is not more than approximately 0.25 micron, said first data feature transverse extent is not more than approximately one micron and said first data feature longitudinal extent is at least twice as great as said first data feature transverse extent; and (c) the ratio of the maximum displacement of said first data feature from said index level in a first vertical direction to said displacement in the opposite vertical direction excludes values within the range extending from approximately 0.2 to approximately 5.0, (2) a successive pair of first data features in said first region longitudinally separated by a three-dimensional data-representing data segment, said data segment comprising at least part of a three-dimensional first track feature longitudinally extending along said first track segment, the longitudinal axis of said data segment substantially coinciding with the longitudinal axis of said successive pair of first data features, said data segment having a data segment longitudinal extent along said first track, a data segment transverse extent in a direction normal to said data segment longitudinal extent and co-planar therewith in a data segment plane, and a data segment vertical extent in a vertical direction normal to said data segment plane, the vertical expanse of said data segment in respect to said index level being less than 170 nanometers, and said data segment transverse extent being microscopic; and b. a second region comprising a second track segment having a second track segment axis, a length of said second track segment having a second track segment longitudinal extent along said second track segment axis, a microscopic second track segment transverse extent normal to said second track segment axis, and a microscopic second track segment vertical extent normal to said second track segment axis and said second track segment transverse extent, wherein: c. said first region comprises a plurality of first track segment lengths, said first track segment lengths mutually displaced in a direction substantially normal to the first track segment axis of at least part of a first track segment length; d. said second region comprises a plurality of second track segment lengths, said second track segment lengths mutually displaced in a direction substantially normal to the second track segment axis of at least part of a second track segment length; e. said second region is displaced from said first region in a direction substantially normal to the first track segment axis of at least part of a first track segment length; f. said second track segment transverse extent exceeds said first data feature transverse extent; g. said first data feature vertical extent exceeds said second track segment vertical extent; and h. said data segment transverse extent is not less than said first data feature transverse extent. 2. The hybrid structure as recited in Claim 1, wherein: a. said hybrid structure comprises a disc having a central axis of rotation and a substantially planar surface; b. said first region comprises a first annulus on said surface and said second region comprises a second annulus on said surface, said first and second annuli radially separated from one another; c. said first track segment comprises a spiral around said disc in said first annulus, and said second track segment comprises a spiral around said disc in said second annulus; d. said first data feature plane is in proximity with said surface; e. said second track segment comprises a three-dimensional second track feature in proximity with said surface, and f. said second track segment comprises an extension of said first track segment. 3 The hybrid structure as Claimed in Claim 1, wherein at least a successive plurality of said first data features comprise data pits and each said data segment between each pair of data pits in said plurality of data pits comprises an indentation. 4. The hybrid structure as Claimed in Claim 1, wherein said data segment transverse extent substantially equals said first data feature transverse extent. 5. The hybrid structure as reeked in Claim 1, wherein said data segment transverse extent exceeds said first data feature transverse extent. 6 The hybrid structure as Claimed in Claim 2, wherein a. at least a portion of said first track segment comprises said first track feature in proximity with said surface; and b. at least a portion of said successive plurality of first data features is within the longitudinal extremities of said first track feature. 7. The hybrid structure as Claimed in Claim 1, wherein the longitudinal extremities of each of a plurality of said first data features are three-dimensionally geometrically symmetric. 8. The hybrid structure as Claimed in Claim 1, wherein the longitudinal extremities of each of a plurality of said data segments are three-dimensionally geometrically symmetric. 9. The hybrid structure as Claimed in Claim 1, wherein said second track segment comprises an extension of said first track segment. 10. The hybrid structure as Claimed in Claim 1, wherein each of said first data features has an outer shape, defined by a transverse section thereof, displaying no substantial slope discontinuity from the point at which said first data feature begins its displacement in a vertical direction at one extreme transverse edge of said first data feature, until the point at which said vertical displacement ends at the opposite extreme transverse edge of said first data feature. S1. An intermediary hybrid structure displaying three-dimensional features corresponding to three-dimensional features of the structure recited in Claim 1. and displaying similar vertical polarity to said corresponding features. 12. A final hybrid structure displaying three-dimensional features corresponding to three-dimensional features of the structure recited in Claim 11, and displaying similar vertical polarity to said corresponding features. 13. A hybrid structure, substantially as hereinbefore described with reference to the accompanying drawings.

Full Text

DESCRIPTION (COMPLETE)
OCR NOT PREPARE DUE TO
PRINT PROBLEM

We claim:
I A hybrid structure comprising:
a. a first region storing selectively retrievable data in a data layer ol substantially uniform composition containing a substantially planar first level,
(1) a quantum of said data represented by a three-dimensional first data
feature in said first region, said first region containing a plurality of said
first data features successively along a first track segment in said firsl
region, each first data feature having a first data feature longitudinal
extent, a microscopic first data feature transverse extent normal to said
first data feature longitudinal extent and co-planar therewith in a first
data feature plane at said first level and a microscopic first data feature
vertical extent normal to said first data feature plane, at least a portion of
said first data feature vertically displaced from said first level, said first
data feature further characterized in that:
(a) the outer shape of said first data feature, defined by a transverse section thereof displays no substantial slope discontinuity from the point at which said first data feature begins its displacement in a vertical direction from an index level defined in respect to said structure, at one transverse edge of said first data feature, until the point at which said vertical displacement from said index level ends at the opposite transverse edge of said first data feature;
(b) the vertical expanse of said first data feature in respect to said index level, is not more than approximately 0.25 micron, said first data feature transverse extent is not more than approximately one micron and said first data feature longitudinal extent is at least twice as great as said first data feature transverse extent; and
(c) the ratio of the maximum displacement of said first data feature from said index level in a first vertical direction to said displacement in the opposite vertical direction excludes values within the range extending from approximately 0.2 to approximately 5.0,
(2) a successive pair of first data features in said first region longitudinally

separated by a three-dimensional data-representing data segment, said data segment comprising at least part of a three-dimensional first track feature longitudinally extending along said first track segment, the longitudinal axis of said data segment substantially coinciding with the longitudinal axis of said successive pair of first data features, said data segment having a data segment longitudinal extent along said first track, a data segment transverse extent in a direction normal to said data segment longitudinal extent and co-planar therewith in a data segment plane, and a data segment vertical extent in a vertical direction normal to said data segment plane, the vertical expanse of said data segment in respect to said index level being less than 170 nanometers, and said data segment transverse extent being microscopic; and
b. a second region comprising a second track segment having a second track
segment axis, a length of said second track segment having a second track
segment longitudinal extent along said second track segment axis, a
microscopic second track segment transverse extent normal to said second
track segment axis, and a microscopic second track segment vertical extent
normal to said second track segment axis and said second track segment
transverse extent, wherein:
c. said first region comprises a plurality of first track segment lengths, said first
track segment lengths mutually displaced in a direction substantially normal
to the first track segment axis of at least part of a first track segment length;
d. said second region comprises a plurality of second track segment lengths,
said second track segment lengths mutually displaced in a direction
substantially normal to the second track segment axis of at least part of a
second track segment length;
e. said second region is displaced from said first region in a direction
substantially normal to the first track segment axis of at least part of a first
track segment length;
f. said second track segment transverse extent exceeds said first data feature
transverse extent;
g. said first data feature vertical extent exceeds said second track segment
vertical extent; and
h. said data segment transverse extent is not less than said first data feature transverse extent.
2. The hybrid structure as recited in Claim 1, wherein:
a. said hybrid structure comprises a disc having a central axis of rotation and a
substantially planar surface;
b. said first region comprises a first annulus on said surface and said second
region comprises a second annulus on said surface, said first and second
annuli radially separated from one another;
c. said first track segment comprises a spiral around said disc in said first
annulus, and said second track segment comprises a spiral around said disc
in said second annulus;
d. said first data feature plane is in proximity with said surface;
e. said second track segment comprises a three-dimensional second track
feature in proximity with said surface, and
f. said second track segment comprises an extension of said first track segment.
3 The hybrid structure as Claimed in Claim 1, wherein at least a successive plurality
of said first data features comprise data pits and each said data segment between each pair of data pits in said plurality of data pits comprises an indentation.
4. The hybrid structure as Claimed in Claim 1, wherein said data segment transverse extent substantially equals said first data feature transverse extent.
5. The hybrid structure as reeked in Claim 1, wherein said data segment transverse extent exceeds said first data feature transverse extent.
6 The hybrid structure as Claimed in Claim 2, wherein
a. at least a portion of said first track segment comprises said first track feature
in proximity with said surface; and
b. at least a portion of said successive plurality of first data features is within
the longitudinal extremities of said first track feature.
7. The hybrid structure as Claimed in Claim 1, wherein the longitudinal extremities of each of a plurality of said first data features are three-dimensionally geometrically symmetric.
8. The hybrid structure as Claimed in Claim 1, wherein the longitudinal extremities of each of a plurality of said data segments are three-dimensionally geometrically symmetric.
9. The hybrid structure as Claimed in Claim 1, wherein said second track segment
comprises an extension of said first track segment.
10. The hybrid structure as Claimed in Claim 1, wherein each of said first data features has an outer shape, defined by a transverse section thereof, displaying no substantial slope discontinuity from the point at which said first data feature begins its displacement in a vertical direction at one extreme transverse edge of said first data feature, until the point at which said vertical displacement ends at the opposite extreme transverse edge of said first data feature.
S1. An intermediary hybrid structure displaying three-dimensional features corresponding to three-dimensional features of the structure recited in Claim 1. and displaying similar vertical polarity to said corresponding features.
12. A final hybrid structure displaying three-dimensional features corresponding to three-dimensional features of the structure recited in Claim 11, and displaying similar vertical polarity to said corresponding features.
13. A hybrid structure, substantially as hereinbefore described with reference to the accompanying drawings.

Documents:

1231-delnp-2004-abstract.pdf

1231-delnp-2004-claims.pdf

1231-delnp-2004-correspondence-others.pdf

1231-delnp-2004-correspondence-po.pdf

1231-delnp-2004-description (complete).pdf

1231-delnp-2004-drawings.pdf

1231-delnp-2004-form-1.pdf

1231-delnp-2004-form-19.pdf

1231-delnp-2004-form-2.pdf

1231-delnp-2004-form-26.pdf

1231-delnp-2004-form-3.pdf

1231-delnp-2004-form-5.pdf

1231-delnp-2004-pct-101.pdf

1231-delnp-2004-pct-210.pdf

1231-delnp-2004-petition-137.pdf

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Patent Number

218197

Indian Patent Application Number

1231/DELNP/2004

PG Journal Number

33/2008

Publication Date

15-Aug-2008

Grant Date

31-Mar-2008

Date of Filing

07-May-2004

Name of Patentee

See attached documents

Applicant Address

See attached documents

Inventors:

#	Inventor's Name	Inventor's Address
1	See attached documents	See attached documents

PCT International Classification Number

G11B 7/24

PCT International Application Number

PCT/US03/025844

PCT International Filing date

2003-09-03

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA