US5091635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical record medium including a data region, an identification region and a control data region, and a method of recording signals on the optical record medium
Assignee: Olympus Corp
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Filing: 1990-10-09
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Granted: 1992-02-25
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Expires: 2010-10-09
Abstract
Abstract An optical record medium in the form of a wallet-size optical card including a data region in which a number of data tracks are provided in parallel with each other, an identification region provided on one side of the data region, and a mark region provided on a side of the identification regions. Data signals are recorded in the data tracks and addresses of the data tracks are recorded in the identification region. Every time a data signal has been recorded in a data track, a mark is recorded in the mark region at such a position that the mark is aligned with the relevant data track viewed in a track direction.
Inventors
- 👤 Yuichiro Akatsuka
- 👤 Takayuki Abe
- 👤 Akira Matsueda
- 👤 Takao Rokutan
- 👤 Nagahiro Gocho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/28; G11B23/281; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B7/00; G11B7/24; G11B7/2407; G11B7/24085; G11B20/00; G11B20/10; G11B20/12; G11B20/1215; G11B7/002; G11B7/0033
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
A method of recording on an optical record medium a data signal and a control data signal for managing the optical record medium having a substrate, a first area defining a data region including a plurality of parallelly arranged tracks and a second area defining an identification region in which addresses of tracks are recorded, comprising the steps of: selecting at least one track among said tracks as a control data track; recording a data signal in a data track which is not selected as said control data track; and recording a control data signal representing a last data track in which the latest data signal has been recorded, for managing the optical record medium in said control data track; wherein marks having a constant length are recorded in said control data track each time data signals are recorded in the data tracks such that successive marks are brought into contact with each other in the longitudinal direction.
Claim 2
Independent Claim
158 words
A method of recording on an optical record medium a data signal and a control data signal for managing the optical record medium having a substrate, a first area defining a data region including a plurality of parallelly arranged tracks and a second area defining an identification region in which addresses of tracks are recorded, comprising the steps of: selecting at least one track among said tracks as a control data track; recording a data signal in a data track which is not selected as said control data track; and recording a control data signal representing a last data track in which the latest data signal has been recorded, for managing the optical record medium in said control data track; wherein marks having a constant length are recorded in said control data track each time data signals are recorded in the data tracks such that successive marks are brought into contact with each other in the longitudinal direction.
Claim 3
Independent Claim
159 words
A method of recording on an optical record medium a data signal and a control data signal for managing the optical record medium having a substrate, a first area defining a data region including a plurality of parallelly arranged tracks and a second area defining an identification region in which addresses of tracks are recorded, comprising the steps of: selecting at least one track among said tracks as a control data track; recording a data signal in a data track which is not selected as said control data track; and recording a control data signal representing a last data track in which the latest data signal has been recorded, for managing the optical record medium in said control data track; wherein pit marks are recorded in said control data track each time data signals are recorded in the data tracks such that successive pit marks are aligned at a constant pitch in the direction of arrangement of the tracks.
Claim 4
Independent Claim
159 words
A method of recording on an optical record medium a data signal and a control data signal for managing the optical record medium having a substrate, a first area defining a data region including a plurality of parallelly arranged tracks and a second area defining an identification region in which addresses of tracks are recorded, comprising the steps of: selecting at least one track among said tracks as a control data track; recording a data signal in a data track which is not selected as said control data track; and recording a control data signal representing a last data track in which the latest data signal has been recorded, for managing the optical record medium in said control data track; wherein pit marks are recorded in said control data track each time data signals are recorded in the data tracks such that successive pit marks are aligned at a constant pitch in the direction of arrangement of the tracks.
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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) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |