Patent US4705994A successfully refreshed from Google Patents.
US4705994A
Expired / Lapsed
US
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Electric equipment driving circuit
Assignee: Ozen Corp
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Filing: 1986-12-04
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Granted: 1987-11-10
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Expires: 2006-12-04
Abstract
Abstract A microphone senses a sound generated by the user clapping his hands and converts the sound into an electric signal which is applied to a flip-flop circuit to set the latter. The output of the flip-flop circuit is supplied through a time constant circuit to a drive and control circuit for operating a sound generating device having a reproducing stylus and a recorded disk. A reset signal producing circuit is provided to produce a reset signal for the flip-flop circuit when a second sound is sensed by the microphone within a predetermined time period set by the time constant circuit, thereby stopping the operation of the sound generating device.
Inventors
- 👤 Eishi Koike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:16
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; A; A63; A63H; A63H30/00; A63H30/02; A63H30/04; H03K17/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
An electric equipment driving circuit comprising: a transducer for converting an input signal into an electric output signal; a bistable circuit supplied with the output signal of said transducer as a set signal; a time constant circuit connected to an output terminal of said bistable circuit for producing an output after a fixed time elapses from a time at which the output of said bistable circuit is caused to be an on condition; A reset signal producing circuit supplied with the output of said time constant circuit, the output of said bistable circuit, and the output of said transducer, said reset signal producing circuit producing a reset signal for said bistable circuit when the output of said time constant circuit is obtained, and when both the output of said bistable circuit and the output of said transducer are in an on condition; and a drive and control circuit supplied with the output of said bistable circuit for driving and controlling an electric motor in response to output from the bistable circuit.
Claim 2
Dependent Claim
171 words
An electric equipment driving circuit comprising: a transducer for converting an input signal into an electric output signal; a bistable circuit supplied with the output signal of said transducer as a set signal; a time constant circuit connected to an output terminal of said bistable circuit for producing an output after a fixed time elapses from a time at which the output of said bistable circuit is caused to be an on condition; A reset signal producing circuit supplied with the output of said time constant circuit, the output of said bistable circuit, and the output of said transducer, said reset signal producing circuit producing a reset signal for said bistable circuit when the output of said time constant circuit is obtained, and when both the output of said bistable circuit and the output of said transducer are in an on condition; and a drive and control circuit supplied with the output of said bistable circuit for driving and controlling an electric motor in response to output from the bistable circuit.
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) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |