US3846831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound reproducing apparatus in which the drive means operates in response to a prerecorded control signal
Assignee: EXATRON Corp A CORP OF
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Filing: 1973-03-07
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Granted: 1974-11-05
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Expires: 1993-03-07
Abstract
Abstract Sound reproducing apparatus for providing a continuous program of intelligence recorded on a record medium such as magnetic tape. A control signal is recorded on the tape in addition to the intelligence-carrying signal. The recorded program is reproduced by a device which is maintained in the operative state, provided that the control signal and the intelligence-carrying signal are not interrupted longer than a predetermined time interval. When the control signal and the intelligence-carrying signal are absent longer than this predetermined time interval, the reproducing device is rendered inoperative.
Inventors
- 👤 C Johnson
- 👤 P Richman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:09
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/22; G11B15/00; G11B15/02; G11B15/18; G11B15/22; G11B15/44; G11B15/444; G11B15/446; G11B15/448; G11B15/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
Signal reproduction means for reproducing intelligence signals within a pre-selected frequency range in response to a control signal having a major frequency component outside said range, said signals being recorded on a record medium, comprising: first detecting means for detecting said control signal; second detecting means for detecting said intelligence signals; intelligence signal reproducing means for reproducing said intelligence signals on said record medium; and operating means responsive to said control signal for controlling said intelligence signal means to reproduce said intelligence signals only in continuing response to said control signal.
Claim 2
Dependent Claim
91 words
Signal reproduction means for reproducing intelligence signals within a pre-selected frequency range in response to a control signal having a major frequency component outside said range, said signals being recorded on a record medium, comprising: first detecting means for detecting said control signal; second detecting means for detecting said intelligence signals; intelligence signal reproducing means for reproducing said intelligence signals on said record medium; and operating means responsive to said control signal for controlling said intelligence signal means to reproduce said intelligence signals only in continuing response to said control signal.
Claim 3
Dependent Claim
13 words
The reproduction means of claim 1, wherein said record medium is magnetic tape.
Claim 4
Dependent Claim
40 words
The signal reproduction means of claim 1, wherein there is further included, in combination, a prerecorded record medium having recorded thereon intelligence signals within a pre-selected frequency range and a control signal having a major frequency component outside said range.
Claim 5
Dependent Claim
15 words
The signal reproduction means of claim 3, wherein said record medium is a magnetic tape.
Claim 6
Dependent Claim
19 words
The signal reproduction means of claim 2, wherein each said signal is recorded across the width of said tape.
References Cited (Backward Citations)
US3334194A
Cited
US3405461A
Cited
US3590167A
Cited
US3624308A
Cited
US3702908A
Cited
US3678221A
Cited
US3623039A
Cited
US3705271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |