US6281925B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video telephone device having automatic sound level setting along with operation mode switching
Assignee: Denso Corp
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Filing: 1999-08-04
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Granted: 2001-08-28
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Expires: 2019-08-04
Abstract
Abstract A cellular video telephone terminal is capable of switching its operation mode between a voice communication and a voice and image communication in response to a manual operation on a key. A control unit checks whether the key is operated to effect the voice and image communication. The control unit sets volumes of a speaker and a microphone to low levels in the voice communication mode. The control unit sets the volumes of the same to high levels in the voice and image communication mode to enable hand-free operation.
Inventors
- 👤 Akio Kosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:31
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/14; H04N7/141; H04N7/142; H04M; H04M1/00; H04M1/72; H04M1/724; H04M1/60; H04M1/6033; H04M1/6041
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
192 words
A mobile video telephone comprising: voice communication means for effecting voice communication; image communication means for effecting image communication; mode switching means for switching between the voice communication through the voice communication means and the voice and image communication through the voice communication means and the image communication means in response to an external operation; control means for automatically setting an amplification of a received voice signal to a higher gain in the voice and image communication mode than in the voice communication mode; determining means for determining whether an image signal is being received from an opponent when the mode switching means is operated to effect the voice and image communication, wherein the control means enables the image communication means to effect a display of a received image and sets the amplification of the received voice signal to the higher gain, when the determining means determines a receipt of the image signal, and wherein the control means disables the image communication means to effect a display of image and sets the amplification of the received voice signal to the lower gain, when the determining means determines non-receipt of the image signal.
Claim 2
Dependent Claim
192 words
A mobile video telephone comprising: voice communication means for effecting voice communication; image communication means for effecting image communication; mode switching means for switching between the voice communication through the voice communication means and the voice and image communication through the voice communication means and the image communication means in response to an external operation; control means for automatically setting an amplification of a received voice signal to a higher gain in the voice and image communication mode than in the voice communication mode; determining means for determining whether an image signal is being received from an opponent when the mode switching means is operated to effect the voice and image communication, wherein the control means enables the image communication means to effect a display of a received image and sets the amplification of the received voice signal to the higher gain, when the determining means determines a receipt of the image signal, and wherein the control means disables the image communication means to effect a display of image and sets the amplification of the received voice signal to the lower gain, when the determining means determines non-receipt of the image signal.
Claim 3
Dependent Claim
37 words
A mobile video telephone of claim 1 , wherein the control means sets an amplification of a transmission voice signal to a higher gain in the voice and image communication mode than in the voice communication mode.
Claim 4
Dependent Claim
52 words
A mobile video telephone of claim 2 , wherein the control means maintains the amplification gains of the received voice signal and the received image signal unchanged between the voice communication mode and the voice and image communication mode irrespective of operation of the mode switching means, when an earphone-microphone is used.
Claim 5
Dependent Claim
43 words
A mobile video telephone of claim 1 , further comprising: a keyboard unit having a plurality of keys, one of which is used as the mode switching means; and the key is also operable to effect a function other than switching the modes.
Claim 6
Dependent Claim
44 words
A mobile video telephone of claim 3 , wherein the key is arranged as a hand-free switch to set the amplification gain of the received voice signal to the higher value when operated in the course of receiving only a voice signal than before.
Claim 7
Dependent Claim
47 words
A mobile video telephone of claim 1 , wherein the control means maintains the amplification gain of the received voice signal unchanged between the voice communication mode and the voice and image communication mode irrespective of operation of the mode switching means, when an earphone is used.
Claim 8
Dependent Claim
28 words
A mobile video telephone of claim 1 , further comprising radio means for transmitting and receiving radio signals for the voice communication and the voice and image communication.
References Cited (Backward Citations)
JPH04178055A
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JPH0564181A
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JPH05327844A
Cited
US5491507A
Cited
JPH0888841A
Cited
JPH08140143A
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JPH09149186A
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US6073033A
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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) | 2004-08-27 | 2005-02-26 | 2005-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-27 | 2009-02-26 | 2009-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-27 | 2013-02-26 | 2013-08-28 | $7700.00 | Window Closed / Lapsed |