Patent US5510900A successfully refreshed from Google Patents.
US5510900A
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US
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Video signal recording apparatus with rerecording inhibit circuit
Assignee: Sony Corp
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Filing: 1994-01-06
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Granted: 1996-04-23
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Expires: 2014-01-06
Abstract
Abstract A picture signal recording system comprises a high-definition broadcasting station 1, an artificial satellite 2, a television receiver 3 and a video signal recording apparatus 5. A pilot signal P is superimposed on a luminance signal Y at the broadcasting station 1. This pilot signal P does not give any adverse influence to an image reproduced on a TV monitor and is detectable from the luminance signal Y. A frequency of this pilot signal is selected to be smaller than the frequency of the luminance signal Y, a superimposing timing thereof is set to a head position of the luminance signal Y, and an amplitude thereof is varied with respect to a grey level as a variation center. The pilot signal P superimposed on the luminance signal Y is detected by a pilot signal detecting circuit 53 within a video signal recording apparatus 5. The picture signal is recorded on a video tape 11 and rerecording prohibit information is recorded in a reserved area by a picture signal recording process circuit 51. When the video tape 11 on which this rerecording prohibit information has been recorded is reproduced, the reproduced picture signal is prohibited to be rerecorded.
Inventors
- 👤 Yoshiki Shirochi
- 👤 Keitaro Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:12
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/023; G11B15/04; G11B19/00; G11B19/02; G11B20/00; G11B20/00086; G11B31/00; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/913; H04N7/00; H04N7/08; H04N7/081
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
129 words
A video signal recording apparatus which inhibits the rerecording of a video signal, comprising: receiving means for receiving the video signal with a first or a second inhibit recording signal superimposed thereon; means for producing said second inhibit recording signal in response to reception of said first inhibit recording signal superimposed on said video signal, said second inhibit recording signal being distinguished from said first inhibit recording signal; means for recording said video signal and for recording said second inhibit recording signal with said video signal when said first inhibit recording signal is received superimposed on said video signal; and means for inhibiting rerecording of said video signal by said means for recording when said video signal is received with said second inhibit recording signal by said receiving means.
Claim 2
Dependent Claim
129 words
A video signal recording apparatus which inhibits the rerecording of a video signal, comprising: receiving means for receiving the video signal with a first or a second inhibit recording signal superimposed thereon; means for producing said second inhibit recording signal in response to reception of said first inhibit recording signal superimposed on said video signal, said second inhibit recording signal being distinguished from said first inhibit recording signal; means for recording said video signal and for recording said second inhibit recording signal with said video signal when said first inhibit recording signal is received superimposed on said video signal; and means for inhibiting rerecording of said video signal by said means for recording when said video signal is received with said second inhibit recording signal by said receiving means.
Claim 3
Dependent Claim
21 words
The video signal recording apparatus according to claim 1, wherein said receiving means receives said video signal from a broadcast station.
Claim 4
Dependent Claim
23 words
The video signal recording apparatus according to claim 1, wherein said receiving means receives said video signal from a video signal reproducing circuit.
Claim 5
Dependent Claim
49 words
The video signal recording apparatus according to claim 1, wherein said second inhibit recording signal is recorded at a predetermined reserved portion of the video signal, said predetermined reserved portion being after a synchronizing signal, a burst signal, an identification signal and a ramp signal of the video signal.
Claim 6
Dependent Claim
33 words
The video signal recording apparatus according to claim 4, wherein said second inhibit recording signal is a predetermined voltage magnitude representing a logic "1" in said predetermined reserved portion of the video signal.
Claim 7
Dependent Claim
51 words
The video signal recording apparatus according to claim 1, wherein said second inhibit recording signal is recorded at a predetermined unused reserved portion of the video signal, said predetermined unused reserved portion being after a synchronizing signal, a burst signal, an identification signal and a ramp signal of the video signal.
Claim 8
Dependent Claim
135 words
The video signal recording apparatus according to claim 1, wherein said means for recording includes: a first detector for detecting said first inhibit recording signal :superimposed on said video signal and for supplying a first prohibit control signal when said first inhibit recording signal is detected, and a second detector for detecting said second inhibit recording signal superimposed on said video signal and for supplying a second prohibit control signal when said second inhibit recording signal is detected; and wherein said means for recording records said second inhibit recording signal with said video signal when said first prohibit control :signal is supplied by said first detector, and said means for inhibiting rerecording inhibits rerecording of said video signal by said means for recording when said second prohibit control signal is supplied by said second detector.
Claim 9
Dependent Claim
17 words
The video signal recording apparatus according to claim 1, wherein said means for recording is a recorder.
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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) | 1999-04-23 | 1999-10-23 | 2000-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-23 | 2003-10-23 | 2004-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-23 | 2007-10-23 | 2008-04-23 | $7700.00 | Window Closed / Lapsed |