US4257067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound enhancement system for television receivers
Assignee: Individual
•
Filing: 1979-07-27
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Granted: 1981-03-17
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Expires: 1999-07-27
Abstract
Abstract A conventional sound reproducing device, such as an am/fm stereo radio receiver, including additional speakers and a volume control device, is connected in circuit with the input of a conventional television receiver to enhance the sound reproduced by the television receiver. An impedance element is selectively switchable in and out of the circuit to change the sound level of the speakers of the radio receiver relative to the sound level of the television speaker or to disconnect the radio receiver. Additional impedance elements are switchable in and out of circuit with the volume control device of the television receiver by switch means located in proximity to a person seated before the television receiver whereby to adjust the sound level of the entire system.
Inventors
- 👤 James S. Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:49
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/60; H04N5/607; H04R; H04R3/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A sound enhancement system for a television receiver having an audio channel including a speaker and an adjustable volume control device for said speaker comprising: sound reproducing means having a second audio channel including a second speaker located remotely from said first mentioned speaker; a second adjustable volume control device for said second speaker, a circuit for connecting the input of said first mentioned speaker to the input of said second volume control device, an impedance device, and switching means for selectively connecting said impedance device in and out of said circuit.
Claim 2
Dependent Claim
92 words
A sound enhancement system for a television receiver having an audio channel including a speaker and an adjustable volume control device for said speaker comprising: sound reproducing means having a second audio channel including a second speaker located remotely from said first mentioned speaker; a second adjustable volume control device for said second speaker, a circuit for connecting the input of said first mentioned speaker to the input of said second volume control device, an impedance device, and switching means for selectively connecting said impedance device in and out of said circuit.
Claim 3
Dependent Claim
20 words
A sound enhancement system as defined in claim 1 wherein said switching means are selectively settable to disconnect said circuit.
Claim 4
Dependent Claim
37 words
A sound enhancement system as defined in claim 1 comprising: a second impedance device, and second switching means for selectively connecting said second impedance device in and out of circuit with said first mentioned volume control device.
Claim 5
Dependent Claim
40 words
A sound enhancement system as defined in claim 3 comprising: a third impedance device, said second switching means being effective to selectively connect either said second or said third impedance device in circuit with said first mentioned volume control device.
Claim 6
Dependent Claim
67 words
A sound enhancement system as defined in claims 1 or 3 wherein said sound reproducing means comprises a stereophonic reproducing device having a third auto channel including a third speaker located remotely from said first mentioned and said second speaker, a third adjustable volume control device for said third speaker, said circuit being connected in parallel with the inputs of said second and third volume control devices.
Claim 7
Dependent Claim
39 words
A sound enhancement system as defined in claim 1 wherein said first mentioned volume control device comprises a potentiometer; a resistor, and switch means for selectively connecting said resistor in and out of parallel circuit connection with said potentiometer.
Claim 8
Dependent Claim
68 words
A sound enhancement system as defined in claim 1 wherein said first mentioned volume control device comprises a potentiometer; means forming a viewing station for said television receiver, said viewing station being located remotely from said speakers, a resistor, and second switching means for selectively connecting said resistor in and out of parallel circuit connection with said potentiometer, said second switching means being located adjacent said viewing station.
Claim 9
Dependent Claim
119 words
A sound enhancement system as defined in claim 1 wherein said first mentioned volume control device comprises a potentiometer; means forming a viewing station for said television receiver, said viewing station located remotely from said speakers, a pair of resistors of different ohmic values, and a three position switch means, said switch means being settable in one position to connect one of said resistors in parallel circuit connection with said potentiometer, said switch means being settable in a second position to connect the other of said resistors in parallel circuit connection with said potentiometer, and said switch means being settable in a third position to disconnect both of said resistors, said switch means being located adjacent said viewing station.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |