US4688116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording and/or reproducing digital signal
Assignee: Sony Corp
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Filing: 1986-05-01
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Granted: 1987-08-18
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Expires: 2006-05-01
Abstract
Abstract An apparatus for recording and/or reproducing a digital signal on a recording medium having at least a program start signal and program information recorded thereon, further records an identifying code signal indicating the start of unnecessary information on the recording medium during a predetermined time period, and, in a playback mode, when such identifying code signal is detected, the recording medium is transported at high speed and, when a program start signal is next detected, the recording medium is again transported at a normal speed.
Inventors
- 👤 Toshihiko Takahashi
- 👤 Hirohito Kawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:24
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/087; G11B15/18; G11B15/1808; G11B15/1875; G11B20/00; G11B20/10; G11B20/10527; G11B20/12; G11B20/1201; G11B20/1207; G11B20/1208; G11B27/00; G11B27/02; G11B27/031; G11B27/036; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B20/1211; G11B2220/00; G11B2220/90; G11B2220/91; G11B2220/913; G11B27/032
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
An apparatus for recording and/or reproducing a program information signal comprising: a recording medium on which at least a program information signal and a program start signal indicative of the start of said program information signal are recorded; transport means for controlling the transport of said recording medium; means for reproducing said program information signal recorded on said recording medium; and means for recording a skip identifying code signal indicative only of a start portion of an unnecessary program information on said recording medium.
Claim 2
Independent Claim
84 words
An apparatus for recording and/or reproducing a program information signal comprising: a recording medium on which at least a program information signal and a program start signal indicative of the start of said program information signal are recorded; transport means for controlling the transport of said recording medium; means for reproducing said program information signal recorded on said recording medium; and means for recording a skip identifying code signal indicative only of a start portion of an unnecessary program information on said recording medium.
Claim 3
Dependent Claim
50 words
The apparatus for recording and/or reproducing a program information signal according to claim 1; wherein said program start signal and said skip identifying code signal are recorded on said recording medium at a region on the latter spaced apart from a region in which said program information signal is recorded.
Claim 4
Dependent Claim
118 words
The apparatus for recording and/or reproducing a program information signal according to claim 1; further comprising: first detecting means for detecting said skip identifying code signal when a program information signal is being reproduced from said recording medium; second detecting means for detecting said program start signal; and control means for controlling said transport means such that the latter is changed from a normal transport mode to a high speed transport mode in response to detection of said skip identifying code signal by said first detecting means and said transport means is returned from said high speed transport mode to the normal transport mode in response to detection of said program start signal by said second detecting means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |