Patent US2374411A successfully refreshed from Google Patents.
Patent EP0482645A2 successfully refreshed from Google Patents.
EP0482645A2
Expired / Lapsed
EP
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Optical recording system
Assignee: Pioneer Corp
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Filing: 1991-10-24
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Granted: —
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Expires: 2011-10-24
Abstract
Abstract A CD write-once disk (1) has a program area in which programs are written, and a PMA in which a table of contents of the information written in the program area is written, and a pregroove for representing an absolute time on the disk. An unrecorded disk (1) mounted on a turn table (1a) is determined when a table of contents is not written in the PMA. In that case, an optical pickup (2) is moved to a predetermined position in the program area based on the absolute time obtained from the pregroove. <IMAGE>
Inventors
- 👤 Ryuichiro c/o Tokorozawa Koujou Yoshimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 08:57
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G11B27/327; G11B27/329; G11B19/00; G11B19/02; G11B27/02; G11B27/031; G11B27/034; G11B27/102; G11B27/105; G11B27/22; G11B27/30; G11B27/3027; G11B27/3063; G11B27/36; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/218; G11B2220/25; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A system for recording a program and data on an optical disk (1) with an optical pickup (2), the optical disk (1) having a first area in which programs are mainly written, and a second area located before the first area in which a table of contents of the programs written in the first area is written, the system comprising: determining means (7) for determining whether a program is written in the first area and for producing an unrecorded disk signal when no program is written in the first area; recording control means (5) responsive to the unrecorded disk signal for moving the optical pickup (2) to a predetermined position in the first area.
Claim 2
Dependent Claim
30 words
A system according to claim 1, characterized in that the determining means (7) produces the unrecorded disk signal when a table of contents is not written in the second area.
Claim 3
Dependent Claim
19 words
A system according to claim 1 or 2, characterized in that the optical disk (1) is a CD-write-once disk.
Claim 4
Independent Claim
39 words
A system according to one of claims 1 - 3, characterized in that the recording control means (5) operates to locate the optical pickup (2) at a position with an actual pause at a beginning of the first area.
Claim 5
Independent Claim
30 words
A system according to one of claims 1 - 4, characterized in that the first area is a program area and the second area is a program memory area (PMA).
References Cited (Backward Citations)
No citation records indexed.
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