Patent US4665443A successfully refreshed from Google Patents.
US4665443A
Expired / Lapsed
US
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Signal recording and reproducing apparatus
Assignee: Sony Corp
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Filing: 1984-06-18
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Granted: 1987-05-12
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Expires: 2004-06-18
Abstract
Abstract A signal recording and reproducing apparatus where the signal is recorded in a forward and reverse direction on a magnetic medium such as tape and where the signal to be recorded is supplied to the recording head through a delay circuit with a delay between the recording head and the magnetic tape in the second direction being larger than the signal delay between the head and the tape in the first direction and wherein the difference between these two delays is longer than the time required for tape reversal.
Inventors
- 👤 Masato Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:00
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/02; G11B15/00; G11B15/02; G11B20/00; G11B20/10; G11B20/10527; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B5/00; G11B5/008; G11B5/00813; G11B5/00817; G11B5/00847; G11B5/0086; G11B2220/00; G11B2220/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
238 words
A signal recording and reproducing apparatus wherein, after at least one of the recording head and the recording medium has made a relative movement in a first direction, said recording medium is moved in a second direction opposite to said first direction for reciprocatingly recording input signals, and wherein said recording medium is caused to reciprocatingly travel in said first and second directions for reproducing the recording with a reproducing head, characterized in that, during recording, means are provided for supplying said input signals to said recording head with a delay, the delay of the input signals during running in said second direction being longer than the delay of the input signals during running in said first direction and the difference between said delays selected so as to be longer than the time required for movement reversal from said first direction to said second direction; and during reproduction, means are provided for delaying the reproduced signals from said reproducing head, with delay of the reproduced signals prior to movement reversal selected so as to be longer than the delay of the reproduced signals after movement reversal, and the output signal supplied from said delay means comprises a continuous output signals, wherein the signals are reciprocatingly recorded on the recording medium, characterized in that reversal mark signals indicative of the reversal are recorded on said recording medium in the vicinity of the reversal position along with said input signals.
Claim 2
Dependent Claim
238 words
A signal recording and reproducing apparatus wherein, after at least one of the recording head and the recording medium has made a relative movement in a first direction, said recording medium is moved in a second direction opposite to said first direction for reciprocatingly recording input signals, and wherein said recording medium is caused to reciprocatingly travel in said first and second directions for reproducing the recording with a reproducing head, characterized in that, during recording, means are provided for supplying said input signals to said recording head with a delay, the delay of the input signals during running in said second direction being longer than the delay of the input signals during running in said first direction and the difference between said delays selected so as to be longer than the time required for movement reversal from said first direction to said second direction; and during reproduction, means are provided for delaying the reproduced signals from said reproducing head, with delay of the reproduced signals prior to movement reversal selected so as to be longer than the delay of the reproduced signals after movement reversal, and the output signal supplied from said delay means comprises a continuous output signals, wherein the signals are reciprocatingly recorded on the recording medium, characterized in that reversal mark signals indicative of the reversal are recorded on said recording medium in the vicinity of the reversal position along with said input signals.
Claim 3
Dependent Claim
167 words
A signal recording apparatus wherein, after at least one of the recording head and the recording medium has made a relative movement in a first direction, said recording medium is moved in a second direction opposite to said first direction for reciprocatingly recording input signals on said recording medium, characterized in that means are provided for supplying said input signals to said recording head with a delay, and the amount of delay of the input signals during running in said second direction is set to be longer than the delay of the input signals during running in said first direction and the difference between these delays is selected to be longer than the time required for reversal of said recording medium from said first direction to said second direction, wherein the signals are reciprocatingly recorded on the recording medium, characterized in that reversal mark signals indicative of the reversal are recorded on said recording medium in the vicinity of the reversal position along with said input signals.
Claim 4
Dependent Claim
167 words
A signal recording apparatus wherein, after at least one of the recording head and the recording medium has made a relative movement in a first direction, said recording medium is moved in a second direction opposite to said first direction for reciprocatingly recording input signals on said recording medium, characterized in that means are provided for supplying said input signals to said recording head with a delay, and the amount of delay of the input signals during running in said second direction is set to be longer than the delay of the input signals during running in said first direction and the difference between these delays is selected to be longer than the time required for reversal of said recording medium from said first direction to said second direction, wherein the signals are reciprocatingly recorded on the recording medium, characterized in that reversal mark signals indicative of the reversal are recorded on said recording medium in the vicinity of the reversal position along with said input signals.
Claim 5
Dependent Claim
79 words
A signal recording and reproducing apparatus characterized in that the input signals and the addresses corresponding thereto are reciprocatingly recorded on a recording medium, the thus recorded signals are read out in both the forward and return directions during forward reproduction, and the thus read out forward direction addresses and the return direction addresses are compared to each other so as to determine the movement reversal position and to assume continuous uninterrupted data during reversal of the magnetic medium.
Claim 6
Dependent Claim
79 words
A signal recording and reproducing apparatus characterized in that the input signals and the addresses corresponding thereto are reciprocatingly recorded on a recording medium, the thus recorded signals are read out in both the forward and return directions during forward reproduction, and the thus read out forward direction addresses and the return direction addresses are compared to each other so as to determine the movement reversal position and to assume continuous uninterrupted data during reversal of the magnetic 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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |