US5664014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way communications earset
Assignee: Pan Communications Inc
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Filing: 1995-06-06
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Granted: 1997-09-02
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Expires: 2015-06-06
Abstract
Abstract A one piece two way voice communications earset which is situated in or at the ear of the user and which includes either two unidirectional microphones having their outputs combined or a single bi-directional microphone. The earset also includes a combination circuit for adding or subtracting the first and second signals output from the first and second microphones respectively.
Inventors
- 👤 Noboru Yamaguchi
- 👤 Masao Konomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:57
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/6033; H04M1/6041; H04M1/6058; H04M1/6066; H04M1/02; H04M1/04; H04M1/05; H04R; H04R3/00; H04R3/005; H04R1/00; H04R1/10; H04R1/1008; H04R1/1016; H04R1/105; H04R2201/00; H04R2201/10; H04R2201/107
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
185 words
A one piece two-way simultaneous voice transmitting and receiving device wearable at an ear, comprising: receiver means for emitting sound to the ear canal of a user; and transmitter means, coupled to the receiver means, comprising: a first microphone for sound pickup adapted to be located outside the ear canal at a first position relative to the mouth of the user, the first microphone being one of the unidirectional, bidirectional, or omnidirectional and outputting a first signal; and a second microphone for sound pickup spaced a distance away from the first microphone and adapted to be located outside the ear canal at a second position relative to the mouth of the user, the second position is farther from the mouth of the user than the first position, the second microphone being unidirectional if the first microphone is unidirectional, or bidirectional if the first microphone is bidirectional, or omnidirectional if the first microphone is omnidirectional, and outputting a second signal; and means for subtracting the second signal from the first signal when in phase, or for adding the first and second signals when out of phase.
Claim 2
Dependent Claim
185 words
A one piece two-way simultaneous voice transmitting and receiving device wearable at an ear, comprising: receiver means for emitting sound to the ear canal of a user; and transmitter means, coupled to the receiver means, comprising: a first microphone for sound pickup adapted to be located outside the ear canal at a first position relative to the mouth of the user, the first microphone being one of the unidirectional, bidirectional, or omnidirectional and outputting a first signal; and a second microphone for sound pickup spaced a distance away from the first microphone and adapted to be located outside the ear canal at a second position relative to the mouth of the user, the second position is farther from the mouth of the user than the first position, the second microphone being unidirectional if the first microphone is unidirectional, or bidirectional if the first microphone is bidirectional, or omnidirectional if the first microphone is omnidirectional, and outputting a second signal; and means for subtracting the second signal from the first signal when in phase, or for adding the first and second signals when out of phase.
Claim 3
Dependent Claim
23 words
The one piece two-way simultaneous voice transmitting and receiving device according to claim 1, wherein the first and second microphones are bi-directional microphones.
Claim 4
Dependent Claim
23 words
The one piece two-way simultaneous voice transmitting and receiving device according to claim 1, wherein the first and second microphones are unidirectional microphones.
Claim 5
Dependent Claim
28 words
The one piece two-way simultaneous voice transmitting and receiving device according to claim 1, wherein the device is adapted to fit within the ear canal of the user.
Claim 6
Dependent Claim
27 words
The one piece two-way simultaneous voice transmitting and receiving device according to claim 1, wherein the device is adapted to hang at the ear of the user.
Claim 7
Dependent Claim
29 words
The one piece two-way simultaneous voice transmitting and receiving device according to claim 2, wherein the first and second microphones are substantially identical in shape and electrical performance characteristics.
Claim 8
Dependent Claim
29 words
The one piece two-way simultaneous voice transmitting and receiving device according to claim 3, wherein the first and second microphones are substantially identical in shape and electrical performance characteristics.
Claim 9
Dependent Claim
200 words
A two-way simultaneous voice transmitting and receiving device comprising: an ear cover adapted to hang at the auricle of a user's ear; a speaker attached to an inside portion of the ear cover and facing the entrance of the user's ear canal; and a transmitter attached to an outside portion of the ear cover and having a first microphone for sound pickup adapted to be located at a first position relative to the mouth of the user, the first microphone being one of unidirectional, bidirectional, or omnidirectional and outputting a first signal, and a second microphone for sound pickup spaced from the first microphone and adapted to be located at a second position relative to the mouth of the user, the second position is farther away from the mouth of the user than the first position, the second microphone being unidirectional if the first microphone is unidirectional, bidirectional if the first microphone is bidirectional, or omnidirectional if the first microphone is omnidirectional, and outputting a second signal; and a combination circuit, coupled to the transmitter, the combination circuit subtracts the second signal from the first signal when in phase, or adds the first and second signals when out of phase.
Claim 10
Dependent Claim
200 words
A two-way simultaneous voice transmitting and receiving device comprising: an ear cover adapted to hang at the auricle of a user's ear; a speaker attached to an inside portion of the ear cover and facing the entrance of the user's ear canal; and a transmitter attached to an outside portion of the ear cover and having a first microphone for sound pickup adapted to be located at a first position relative to the mouth of the user, the first microphone being one of unidirectional, bidirectional, or omnidirectional and outputting a first signal, and a second microphone for sound pickup spaced from the first microphone and adapted to be located at a second position relative to the mouth of the user, the second position is farther away from the mouth of the user than the first position, the second microphone being unidirectional if the first microphone is unidirectional, bidirectional if the first microphone is bidirectional, or omnidirectional if the first microphone is omnidirectional, and outputting a second signal; and a combination circuit, coupled to the transmitter, the combination circuit subtracts the second signal from the first signal when in phase, or adds the first and second signals when out of phase.
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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) | 2000-09-01 | 2001-03-03 | 2001-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-01 | 2005-03-03 | 2005-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-01 | 2009-03-03 | 2009-09-02 | $7700.00 | Window Closed / Lapsed |