US6097695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical disk with a groove for defining serial data modulated into a signal using modulation processing
Assignee: Sony Corp
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Filing: 1998-05-06
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Granted: 2000-08-01
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Expires: 2018-05-06
Abstract
Abstract An optical disc has a track pitch of up to 0.64 μm and a light transmitting layer thickness of up to 177 μm. An optical disc apparatus for reliably detecting an address recorded on the optical disc utilizes the information recording surface with high density recording on the disc. The address data such as position information is recorded to the optical disc using a groove formed as the laser beam guiding groove. The groove is formed by modulating a signal formed by bi-phase modulating the address data.
Inventors
- 👤 Shoei Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:59
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/2407; G11B7/24073; G11B7/24082; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/1258; G11B27/00; G11B27/10; G11B27/19; G11B7/007; G11B7/00745; G11B7/2403; G11B7/24056; G11B7/24079; G11B7/26; G11B20/14; G11B20/1403; G11B20/1407; G11B20/1419; G11B20/18; G11B20/1833; G11B2020/1264; G11B2020/1265; G11B2020/1267; G11B2020/1268; G11B2020/1287; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2562; G11B27/28; G11B27/30; G11B27/3027; G11B7/00718
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
97 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; and forming said light transmitting layer having a thickness of up to approximately 177 μm.
Claim 2
Independent Claim
97 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; and forming said light transmitting layer having a thickness of up to approximately 177 μm.
Claim 3
Dependent Claim
20 words
The method according to claim 1, wherein said thickness of said light transmitting layer is between 10 and 177 μm.
Claim 4
Independent Claim
136 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; forming said light transmitting layer having a thickness of up to approximately 177 μm; generating a first modulated signal by bi-phase modulating said address data; generating a second modulated signal by frequency modulating the generated first modulated signal; and forming said groove on said optical disc in accordance with the generated second modulated signal.
Claim 5
Independent Claim
136 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; forming said light transmitting layer having a thickness of up to approximately 177 μm; generating a first modulated signal by bi-phase modulating said address data; generating a second modulated signal by frequency modulating the generated first modulated signal; and forming said groove on said optical disc in accordance with the generated second modulated signal.
Claim 6
Dependent Claim
30 words
The method according to claim 3, wherein a reference signal having a period shorter than said second modulated signal is inserted at a predetermined timing into said second modulated signal.
Claim 7
Independent Claim
136 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; forming said light transmitting layer having a thickness of up to approximately 177 μm: generating a first modulating signal by bi-phase modulating said address data; generating a second modulated signal by phase modulating the generated first modulated signal; and forming said groove on said optical disc in accordance with the generated second modulated signal.
Claim 8
Independent Claim
136 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; forming said light transmitting layer having a thickness of up to approximately 177 μm: generating a first modulating signal by bi-phase modulating said address data; generating a second modulated signal by phase modulating the generated first modulated signal; and forming said groove on said optical disc in accordance with the generated second modulated signal.
Claim 9
Dependent Claim
30 words
The method according to claim 5, wherein a reference signal having a period shorter than said second modulated signal is inserted at a predetermined timing into said second modulated signal.
Claim 10
Independent Claim
158 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; forming said light transmitting layer having a thickness of up to approximately 177 μm; assigning to said address data a track number and a frame number of an incident position of said laser beam on said optical disc; adding a predetermined synchronization signal and an error detection code to said address data for forming a number of data blocks; and forming on said optical disc said groove representing said block data according to said address data.
Claim 11
Independent Claim
158 words
A method for manufacturing an optical disc having a light transmitting layer and an information recording surface for recording predetermined data by a laser beam directed to said information recording surface through said light transmitting layer, said method comprising the steps of: providing a groove on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information; setting a track pitch to up to about 0.64 μm in said groove; forming said light transmitting layer having a thickness of up to approximately 177 μm; assigning to said address data a track number and a frame number of an incident position of said laser beam on said optical disc; adding a predetermined synchronization signal and an error detection code to said address data for forming a number of data blocks; and forming on said optical disc said groove representing said block data according to said address data.
Claim 12
Dependent Claim
24 words
The method according to claim 7, wherein said number of data blocks is assigned to one revolution of said groove on said optical disc.
Claim 13
Dependent Claim
39 words
The method according to claim 1, wherein a period during the forming of said groove converted into a rotating angle of said optical disc becomes substantially the same with respect to inner and outer circumferences on said optical disc.
Claim 14
Dependent Claim
41 words
The method according to claim 1, wherein a period during the forming of said groove converted into a length along a circumference of said optical disc becomes substantially the same with respect to inner and outer circumferences on said optical disc.
Claim 15
Dependent Claim
22 words
The method according to claim 1, wherein a width of said groove is substantially the same as a distance between adjacent grooves.
Claim 16
Dependent Claim
108 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm; an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information, said groove being formed by setting a track pitch to up to about 0.64 μm.
Claim 17
Dependent Claim
108 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm; an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information, said groove being formed by setting a track pitch to up to about 0.64 μm.
Claim 18
Dependent Claim
20 words
The disc according to claim 12, wherein said thickness of said light transmitting layer is between 10 and 177 μm.
Claim 19
Dependent Claim
150 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm, an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information, said groove being formed by setting a track pitch to up to about 0.64 μm; wherein a first modulated signal is generated by bi-phase modulating said address data and a second modulated signal is generated by frequency modulating the generated first modulated signal such that said groove is formed in accordance with the generated second modulated signal.
Claim 20
Dependent Claim
150 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm, an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information, said groove being formed by setting a track pitch to up to about 0.64 μm; wherein a first modulated signal is generated by bi-phase modulating said address data and a second modulated signal is generated by frequency modulating the generated first modulated signal such that said groove is formed in accordance with the generated second modulated signal.
Claim 21
Dependent Claim
30 words
The disc according to claim 14, wherein a reference signal having a period shorter than said second modulated signal is inserted at a predetermined timing into said second modulated signal.
Claim 22
Dependent Claim
150 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm; an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information, said groove being formed by setting a track pitch to up to about 0.64 μm; wherein a first modulated signal is generated by bi-phase modulating said address data and a second modulated signal is generated by phase modulating the generated first modulated signal such that said groove is formed in accordance with the generated second modulated signal.
Claim 23
Dependent Claim
150 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm; an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information, said groove being formed by setting a track pitch to up to about 0.64 μm; wherein a first modulated signal is generated by bi-phase modulating said address data and a second modulated signal is generated by phase modulating the generated first modulated signal such that said groove is formed in accordance with the generated second modulated signal.
Claim 24
Dependent Claim
30 words
The disc according to claim 16, wherein a reference signal having a period shorter than said second modulated signal is inserted at a predetermined timing into said second modulated signal.
Claim 25
Dependent Claim
172 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm; an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information said groove being formed by setting a track pitch to up to about 0.64 μm; wherein a track number and a frame number of an incident position of said laser beam on said optical disc is assigned to said address data and a predetermined synchronization signal and an error detection code are added to said address data for forming a number of data blocks such that said groove is formed representing said block data according to said address data.
Claim 26
Dependent Claim
172 words
An optical disc, comprising: a light transmitting layer having a thickness of up to approximately 177 μm; an information recording surface for recording data by a laser beam directed to said information recording surface through said light transmitting layer, said information recording surface being utilized for reproducing the recorded data using said laser beam directed to said information recording surface through said light transmitting layer; and a groove located on said information recording surface for guiding said laser beam according to address data containing at least one of time information and position information said groove being formed by setting a track pitch to up to about 0.64 μm; wherein a track number and a frame number of an incident position of said laser beam on said optical disc is assigned to said address data and a predetermined synchronization signal and an error detection code are added to said address data for forming a number of data blocks such that said groove is formed representing said block data according to said address data.
Claim 27
Dependent Claim
24 words
The disc according to claim 18, wherein said number of data blocks is assigned to one revolution of said groove on said optical disc.
Claim 28
Dependent Claim
36 words
The disc according to claim 12, wherein a period of said groove converted into a rotating angle of said optical disc becomes substantially the same with respect to inner and outer circumferences on said optical disc.
Claim 29
Dependent Claim
38 words
The disc according to claim 12, wherein a period of said groove converted into a length along a circumference of said optical disc becomes substantially the same with respect to inner and outer circumferences on said optical disc.
Claim 30
Dependent Claim
22 words
The disc according to claim 12, wherein a width of said groove is substantially the same as a distance between adjacent grooves.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |