US4496998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video tape recorder with delayed control signal recording upon restart
Assignee: Canon Inc
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Filing: 1981-09-03
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Granted: 1985-01-29
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Expires: 2001-09-03
Abstract
Abstract An image recording and reproducing apparatus of the present invention has change over means between a running state and a stopped state of a recording medium, operation detecting means to detect an operation state of the change over means by a control signal synchronized either with a reference signal or a vertical synchronizing signal of an image signal, and delay means to have an output from the operation detecting means delayed for a prescribed length of time after a moment of the change over for a start of running of the recording medium or a stopping of the same thus having a running or stopping signal output therefrom. The recording of the control signal on the recording medium is stopped corresponding to the output of the operation detecting means and the output of the delay means. Further when a change over is made from a stopping mode of the recording medium to a running mode thereof after a change over is once made from the running mode to the stopping mode thereof, a recording interval of control signals corresponding to joints in a recording locus on the recording medium is made to be multiples of an integer being 2 or larger of a recording interval of control signals when the medium makes an ordinary run.
Inventors
- 👤 Hiroyuki Takimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:07
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/1808; G11B15/1875; G11B27/00; G11B27/02; G11B27/022; G11B27/024; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G11B27/322; G11B27/324
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
234 words
A video signal recording and reproducing apparatus, comprising: (a) carrying means which carries a recording medium at a predetermined speed during a video signal recording and reproducing mode; (b) changeover means for forming signals for starting or stopping carrying actions of the carrying means; (c) signal forming means for forming control signals which serves as a reference in a running speed control of said carrying means at a time of reproduction of video signals; (d) recording means for recording said control signals on a recording medium during the video signal recording mode; (e) prohibiting means for prohibiting the recording of said control signals during a period of time from the stopping of the carrying action until a restarting of the same in the video signal recording mode; and (f) delay means for making the carrying means to restart the carrying action after the elapse of a prescribed delay time from the forming of the control signal after the forming of the start signal; wherein said delay means includes means for setting said delay time so that an interval on the recording medium of the last control signal recorded before the stopping of the carrying action and the first control signal recorded after the restart of the carrying action is two or more times greater than the distance between two previously recorded control signals recorded when said recording medium is driven with said predetermined speed.
Claim 2
Dependent Claim
234 words
A video signal recording and reproducing apparatus, comprising: (a) carrying means which carries a recording medium at a predetermined speed during a video signal recording and reproducing mode; (b) changeover means for forming signals for starting or stopping carrying actions of the carrying means; (c) signal forming means for forming control signals which serves as a reference in a running speed control of said carrying means at a time of reproduction of video signals; (d) recording means for recording said control signals on a recording medium during the video signal recording mode; (e) prohibiting means for prohibiting the recording of said control signals during a period of time from the stopping of the carrying action until a restarting of the same in the video signal recording mode; and (f) delay means for making the carrying means to restart the carrying action after the elapse of a prescribed delay time from the forming of the control signal after the forming of the start signal; wherein said delay means includes means for setting said delay time so that an interval on the recording medium of the last control signal recorded before the stopping of the carrying action and the first control signal recorded after the restart of the carrying action is two or more times greater than the distance between two previously recorded control signals recorded when said recording medium is driven with said predetermined speed.
Claim 3
Dependent Claim
17 words
An apparatus according to claim 1, wherein the recording medium has the form of a long tape.
Claim 4
Dependent Claim
31 words
An apparatus according to claim 2, wherein the signal forming means provides for recording of the control signals on an edge portion of said long tape recording in the widths direction.
Claim 5
Dependent Claim
28 words
An apparatus according to claim 1, wherein the carrying means includes a pinch roller, a capstan roller, and means for controlling the pinch roller with the capstan roller.
Claim 6
Dependent Claim
234 words
A video signal recording and reproducing apparatus, comprising: (a) carrying means which carries a recording medium at a predetermined speed during a video signal recording and reproducing mode; (b) changeover means for forming signals for starting or stopping carrying actions of the carrying means; (c) signal forming means for forming control signals which serves as a reference in a running speed control of said carrying means at a time of reproduction of video signals; (d) recording means for recording said control signals on a recording medium during the video signal recording mode; (e) prohibiting means for prohibiting the recording of said control signals during a period of time from the stopping of the carrying action until a restarting of the same in the video signal recording mode; and (f) delay means for making the carrying means to stop the carrying action after the elapse of a prescribed delay time from the forming of the control signal after the forming of the stop signals; wherein said delay means includes means for setting said delay time so that an interval on the recording medium of the last control signal recorded before the stopping of the carrying action and the first control signal recorded after the restart of the carrying action is two or more times greater than the distance between two previously recorded control signals recorded when said recording medium is driven with said predetermined speed.
Claim 7
Dependent Claim
234 words
A video signal recording and reproducing apparatus, comprising: (a) carrying means which carries a recording medium at a predetermined speed during a video signal recording and reproducing mode; (b) changeover means for forming signals for starting or stopping carrying actions of the carrying means; (c) signal forming means for forming control signals which serves as a reference in a running speed control of said carrying means at a time of reproduction of video signals; (d) recording means for recording said control signals on a recording medium during the video signal recording mode; (e) prohibiting means for prohibiting the recording of said control signals during a period of time from the stopping of the carrying action until a restarting of the same in the video signal recording mode; and (f) delay means for making the carrying means to stop the carrying action after the elapse of a prescribed delay time from the forming of the control signal after the forming of the stop signals; wherein said delay means includes means for setting said delay time so that an interval on the recording medium of the last control signal recorded before the stopping of the carrying action and the first control signal recorded after the restart of the carrying action is two or more times greater than the distance between two previously recorded control signals recorded when said recording medium is driven with said predetermined speed.
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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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |