Patent US3599099A successfully refreshed from Google Patents.
US3599099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for transferring audio system output to predetermined broadcast signal
Assignee: NIPPON BROADCASTING SYSTEM
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Filing: 1968-02-14
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Granted: 1971-08-10
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Expires: 1988-02-14
Abstract
Abstract The following specification discloses transmitting and receiving apparatus wherein selected radio programs transmitted from the transmitter have modulated thereon one or more Q signals. The receiver has a first or normal state and a second state wherein it is adapted to receive programs having a selected one of the Q signals modulated thereon. The receiver apparatus is provided with an automatic tuning device for continuously scanning the broadcast band. A carrier wave detector and a Q signal detector are effective to disable the automatic tuning device and to operate a circuit transferring means to switch the receiver from its normal state to its second state, to thus receive the particular program having the Q signal modulated thereon. The receiver returns to its normal state when the Q signal ceases.
Inventors
- 👤 Akira Tatebayashi
- 👤 Totaro Ogura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:31
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/091; G08G1/094; H; H03; H03J; H03J7/00; H03J7/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
316 words
A radio frequency receiver for use with a recorded source of reproducible signals and which is automatically tunable for responding only to selected carrier wave signals in a broadcast band of frequencies wherein at least some of said carrier wave signals may have fiRst and second signals modulated thereon in a first and a second mode, respectively, and where said receiver is adapted to reproduce said first signals in response to a control signal derived from said second signals and corresponding to the instantaneous program content of the associated first signals said apparatus comprising: automatic tuning means for continuously tuning said receiver to scan over said broadcast band unless stopped, first detecting means for detecting the presence of a carrier wave, second detecting means for detecting the presence of a second signal in said second mode, said automatic tuning means operatively connected to said first and second detecting means and including stopping means controlled by said first and second detecting means for stopping said continuous tuning upon simultaneous detection of said carrier wave and of said second signal, control means operatively connected to said second detecting means for generating said control signal and thus causing said receiver to selectively reproduce said first signals modulated in said first mode only for those carrier waves having said second signals in said second mode modulated thereon, third detector means for demodulating said first signals in said first mode, input means for connection to said recorded source of reproducible signals, reproducing means for reproducing both said first and said reproducible signals, and gating means connected to said input means, to said third detector means and to said control means for normally gating said reproducible signals to said reproducing means but for selectively interrupting the reproduction of said reproducing means in response to said control signal and for then gating said first signals in said first mode to said reproducing means.
Claim 2
Dependent Claim
316 words
A radio frequency receiver for use with a recorded source of reproducible signals and which is automatically tunable for responding only to selected carrier wave signals in a broadcast band of frequencies wherein at least some of said carrier wave signals may have fiRst and second signals modulated thereon in a first and a second mode, respectively, and where said receiver is adapted to reproduce said first signals in response to a control signal derived from said second signals and corresponding to the instantaneous program content of the associated first signals said apparatus comprising: automatic tuning means for continuously tuning said receiver to scan over said broadcast band unless stopped, first detecting means for detecting the presence of a carrier wave, second detecting means for detecting the presence of a second signal in said second mode, said automatic tuning means operatively connected to said first and second detecting means and including stopping means controlled by said first and second detecting means for stopping said continuous tuning upon simultaneous detection of said carrier wave and of said second signal, control means operatively connected to said second detecting means for generating said control signal and thus causing said receiver to selectively reproduce said first signals modulated in said first mode only for those carrier waves having said second signals in said second mode modulated thereon, third detector means for demodulating said first signals in said first mode, input means for connection to said recorded source of reproducible signals, reproducing means for reproducing both said first and said reproducible signals, and gating means connected to said input means, to said third detector means and to said control means for normally gating said reproducible signals to said reproducing means but for selectively interrupting the reproduction of said reproducing means in response to said control signal and for then gating said first signals in said first mode to said reproducing means.
Claim 3
Dependent Claim
96 words
A radio receiver as in claim 1 for use in a system where said second signals may have a plurality of discrete values corresponding to instantaneous program content of said signals and wherein: said second detecting means includes means for distinguishing between said plurality of discrete values, and wherein said control means includes selective means for selectively responding to different ones of said discrete values and for generating different respectively corresponding values of said control signal thereby permitting the selective interruption of said reproducible signals for only the corresponding desired program contents of said first signals.
Claim 4
Dependent Claim
49 words
A radio receiver as in claim 2 wherein said means for selectively generating said control signal comprises frequency-selective signal detector means coupled to said second detector for providing an output corresponding to at least a selected frequency which, in turn, corresponds to one of said plurality of discrete values.
Claim 5
Dependent Claim
23 words
The apparatus of claim 2 wherein said third detector is an amplitude modulation detector and said second detector is a phase modulation detector.
Claim 6
Dependent Claim
51 words
The apparatus of claim 4 wherein said second detector includes: a limiter means and phase detector means for reproducing said second signal, said limiter being operable in response to said first detector means, and said automatic tuning means being inoperative when both said second signal and said first signal exist simultaneously.
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |