US4719611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling a recording operation of an optical information recording apparatus
Assignee: Hitachi Ltd
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Filing: 1985-07-22
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Granted: 1988-01-12
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Expires: 2005-07-22
Abstract
Abstract A control circuit for an optical information recording apparatus having a recording device for optically recording information on a recording track of a recording medium, a recording positioning detection device detects the recording start position mark cut on the recording track when a recording start is commanded. Then, recording is started and continued for a predetermined number of tracks. When it is desired to interrupt the recording in mid course, a recording interruption is commanded and the recording is interrupted only when the first recording start position marks after the recording interruption command, has been detected.
Inventors
- 👤 Yoshio Miura
- 👤 Motoyuki Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:52
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/004; G11B7/0045; G11B19/00; G11B19/02; G11B19/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
214 words
An apparatus for controlling a recording operation of an optical information recording apparatus having a recording device for optically recording information signals on at least one recording track of a recording medium in which a positioning mark indicative of a start position of the information is disposed on said recording medium, comprising: means for detecting said positioning mark and producing a mark signal in response to the positioning mark by tracing said recording medium; counter means for counting to a predetermined number in response to said mark signal and for producing an output signal after counting to said predetermined number; means for stopping a recording operation of said recording device when said counter means produces said output signal; operation control means for producing a start command signal in response to a first external signal and for producing an interruption command signal in response to a second external signal; and driving control means for starting said recording device to record said information signals in response to a first mark signal from said detecting means after said operation control means produces said start command signal, and for interrupting the recording operation of said recording device in response to said first mark signal from said detecting means after said operation control means produces said interruption command signal.
Claim 2
Independent Claim
214 words
An apparatus for controlling a recording operation of an optical information recording apparatus having a recording device for optically recording information signals on at least one recording track of a recording medium in which a positioning mark indicative of a start position of the information is disposed on said recording medium, comprising: means for detecting said positioning mark and producing a mark signal in response to the positioning mark by tracing said recording medium; counter means for counting to a predetermined number in response to said mark signal and for producing an output signal after counting to said predetermined number; means for stopping a recording operation of said recording device when said counter means produces said output signal; operation control means for producing a start command signal in response to a first external signal and for producing an interruption command signal in response to a second external signal; and driving control means for starting said recording device to record said information signals in response to a first mark signal from said detecting means after said operation control means produces said start command signal, and for interrupting the recording operation of said recording device in response to said first mark signal from said detecting means after said operation control means produces said interruption command signal.
Claim 3
Dependent Claim
32 words
An apparatus for controlling a recording operation according to claim 1, wherein said positioning mark is disposed on said recording medium at a position other than said at least one recording track.
Claim 4
Dependent Claim
56 words
An apparatus for controlling a recording operation according to claim 1, wherein at least one address signal identifying said at least one recording track is recorded at the beginning of said at least one recording track, said positioning mark detecting means detecting said address signals as the positioning mark so as to produce the mark signal.
Claim 5
Dependent Claim
31 words
An apparatus for controlling a recording operation according to claim 1, wherein said at least one recording track comprises a plurality of tracks cut in concentric circles on said recording medium.
Claim 6
Dependent Claim
25 words
An apparatus for controlling a recording operation according to claim 1, wherein said at least one recording track is cut spirally on said recording medium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |