US4845751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wireless stereo headphone
Assignee: Individual
•
Filing: 1988-03-16
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Granted: 1989-07-04
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Expires: 2008-03-16
Abstract
Abstract A wireless stereo headphone is provided that permits a user to listen to a stereo program being received by a conventional receiver/amplifier without the use of interconnecting wires. A transmitter contained within the headphones allows the user to remotely activate the SCAN and SEEK features of the receiver so that not only can he monitor a program and vary its volume, he can also select the program material.
Inventors
- 👤 Brian H. Schwab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:31
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/86; H04H20/88; H04R; H04R5/00; H04R5/033; H04R5/04; H04R1/00; H04R1/10; H04R1/1008; H04R2420/00; H04R2420/07
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
217 words
A wireless stereo headphone comprising: (a) a left and a right earphone; (b) a stereo headphone receiver contained in said headphone wherein the left and right outputs of said stereo receiver are connected to said left and right earphones respectively; (c) a headphone antenna connected to said stereo headphone receiver; (d) a plug-in accessory stereo transmitter; an accessory antenna for said accessory transmitter; a housing for said accessory transmitter; and a stereo plug, wherein said plug protrudes from said housing, and is positioned in such a way as to allow said plug to be inserted into the headphone jack of conventional stereo receiver/amplifier having SEEK and SCAN functions; wherein the audio output of said conventional receiver/amplifier is transmitted from said accessory stereo transmitter to said stereo headphone receiver so that a user can listen to program material without being tied by a cable to said conventional receiver/amplifier; and (e) a headphone transmitter contained in said headphone, a momentary contact SEEK switch, and a momentary contact SCAN switch; wherein the depression of either of said switches causes a uniquely encoded signal to be transmitted via said headphone antenna; and means for decoding said encoded signal such that SEEK and SCAN functions in said conventional receiver/amplifier may be remotely controlled when the respective said momentary contact switches are depressed.
Claim 2
Dependent Claim
217 words
A wireless stereo headphone comprising: (a) a left and a right earphone; (b) a stereo headphone receiver contained in said headphone wherein the left and right outputs of said stereo receiver are connected to said left and right earphones respectively; (c) a headphone antenna connected to said stereo headphone receiver; (d) a plug-in accessory stereo transmitter; an accessory antenna for said accessory transmitter; a housing for said accessory transmitter; and a stereo plug, wherein said plug protrudes from said housing, and is positioned in such a way as to allow said plug to be inserted into the headphone jack of conventional stereo receiver/amplifier having SEEK and SCAN functions; wherein the audio output of said conventional receiver/amplifier is transmitted from said accessory stereo transmitter to said stereo headphone receiver so that a user can listen to program material without being tied by a cable to said conventional receiver/amplifier; and (e) a headphone transmitter contained in said headphone, a momentary contact SEEK switch, and a momentary contact SCAN switch; wherein the depression of either of said switches causes a uniquely encoded signal to be transmitted via said headphone antenna; and means for decoding said encoded signal such that SEEK and SCAN functions in said conventional receiver/amplifier may be remotely controlled when the respective said momentary contact switches are depressed.
Claim 3
Dependent Claim
89 words
A wireless stereo headphone, as recited in claim 1, wherein said means for decoding said encoded signal comprises a decoding module whose input is said encoded signal, received via said accessory antenna; and whose output is a switching signal that goes from off to on when a user depresses said momentary contact SEEK switch, and a switching signal that goes from off to on when a user depresses said momentary contact SCAN switch, where said outputs are used to control the SEEK and SCAN functions of said conventional receiver/amplifier.
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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |