Patent US4583134A successfully refreshed from Google Patents.
US4583134A
Expired / Lapsed
US
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Coded control signal to control tape recorder
Assignee: Nakamichi Corp
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Filing: 1981-11-30
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Granted: 1986-04-15
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Expires: 2001-11-30
Abstract
Abstract This invention relates to a control system for a tape recorder wherein a sound signal is recorded on a magnetic tape under one recording operating condition selected among a plurality of recording operating conditions and said sound signal recorded is reproduced from said magnetic tape under a playback operating condition corresponding to said selected recording operating condition, said control system comprising a generator to generate a control signal depending on said recording operating condition selected, a recorder to record said control signal on said magnetic tape prior to recording said sound signal, a reproducer to reproduce said control signal from said magnetic tape prior to reproducing said sound signal recorded, a selector to select one playback operating condition among a plurality of playback operating conditions, and a reproduced signal of said control signal controlling said selector so as to select a playback operating condition whereby said sound signal recorded is reproduced under said playback operating condition corresponding to said selected recording operating condition.
Inventors
- 👤 Niro Nakamichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:07
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/087; G11B5/00; G11B5/008; G11B5/00813; G11B5/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
A control system for a tape recorder wherein a sound signal is to be recorded on a magnetic tape under a recording operating condition including at least one of noise reduction, circuit time constants, and tape speed, and the recorded sound signal is to be reproduced from the magnetic tape under a playback operating condition corresponding to a selected recording operating condition, said control system comprising: a plurality of signal generators; recording selecting means to select at least one signal generator to establish a selected recording operating condition; means to generate a binary coded control signal depending on said selected signal generator and corresponding selected recording operating condition; means to move the magnetic tape; recording means to record said binary coded control signal longitudinally on the moving magnetic tape prior to longitudinally recording said sound signal on the same track; reproducing means scanning said track to reproduce said binary coded control signal from the moving magnetic tape prior to reproducing said recorded sound signal; and playback selecting means responsive to the reproduced binary coded control signal to automatically select one of a plurality of playback operating conditions to reproduce said recorded sound signal in a playback operating condition corresponding to said selected signal generator and selected recording operating condition.
Claim 2
Dependent Claim
209 words
A control system for a tape recorder wherein a sound signal is to be recorded on a magnetic tape under a recording operating condition including at least one of noise reduction, circuit time constants, and tape speed, and the recorded sound signal is to be reproduced from the magnetic tape under a playback operating condition corresponding to a selected recording operating condition, said control system comprising: a plurality of signal generators; recording selecting means to select at least one signal generator to establish a selected recording operating condition; means to generate a binary coded control signal depending on said selected signal generator and corresponding selected recording operating condition; means to move the magnetic tape; recording means to record said binary coded control signal longitudinally on the moving magnetic tape prior to longitudinally recording said sound signal on the same track; reproducing means scanning said track to reproduce said binary coded control signal from the moving magnetic tape prior to reproducing said recorded sound signal; and playback selecting means responsive to the reproduced binary coded control signal to automatically select one of a plurality of playback operating conditions to reproduce said recorded sound signal in a playback operating condition corresponding to said selected signal generator and selected recording operating condition.
Claim 3
Dependent Claim
68 words
A control system for a tape recorder as set forth in claim 1, wherein said recording selecting means includes means to select one of said plurality of signal generators for a selected one of circuit time constants; and said generating means includes means to generate a binary coded control signal depending on said selected one of a plurality of signal generators and selected one of circuit time constants.
Claim 4
Dependent Claim
43 words
A control system for a tape recorder as set forth in claim 2, wherein said playback selecting means includes switch means to select a playback circuit time constant in accordance with the recorded binary coded control signal for the selected circuit time constant.
Claim 5
Dependent Claim
60 words
A control system for a tape recorder as set forth in claim 1, wherein said recording selecting means includes first switch means to select one of said plurality of signal generators to enable a noise reduction circuit; and said generating means includes means to generate a binary coded control signal depending on the selected position of said first switch means.
Claim 6
Dependent Claim
38 words
A control system for a tape recorder as set forth in claim 4, wherein said playback selecting means includes switch means to select a playback noise reduction circuit in accordance with the selected position of said switch means.
Claim 7
Dependent Claim
77 words
A control system for a tape recorder as set forth in claim 1, wherein said recording selecting means includes a first switch to select one of said plurality of signal generators for a selected one of recording tape speeds; and said generating means includes means to generate a binary coded control signal depending on a selected position of said first switch for said one of a plurality of signal generators and selected one of recording tape speeds.
Claim 8
Dependent Claim
41 words
A control system for a tape recorder as set forth in claim 6, wherein said playback selecting means includes switch means to select a playback tape speed in accordance with a selected position of said switch for the selected tape speed.
Claim 9
Dependent Claim
43 words
A control system for a tape recorder as set forth in claim 1, including an encoder to convert said signal from said selected signal generator into a binary code signal, and a changeover switch to selectively connect said encoder with a recording head.
Claim 10
Dependent Claim
69 words
A control system for a tape recorder as set forth in claim 1, wherein said reproducing means comprises a decoder connected to a reproducing head for decoding the reproduced signal of said binary coded control signal into a pulse signal, and a control circuit selectively connected to said decoder for receiving said pulse signal and controlling said playback selecting means so as to select said one playback operating condition.
References Cited (Backward Citations)
US28006A
Cited
US2689884A
Cited
US2782398A
Cited
US2780679A
Cited
US3389231A
Cited
US3423743A
Cited
US3509549A
Cited
US3536858A
Cited
US3573360A
Cited
US3668648A
Cited
US3851116A
Cited
US3643013A
Cited
US3760102A
Cited
USRE28006E
Cited
US3865973A
Cited
US3990108A
Cited
US3913135A
Cited
US3848092A
Cited
US4038692A
Cited
JPS5229744A
Cited
JPS5250216A
Cited
US4194198A
Cited
US4134130A
Cited
US4193100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |