Automatic speaker volume and microphone gain control in a...

Details Automatic speaker volume and microphone gain control in a... Automatic speaker volume and microphone gain control in a...

2005-02-08

2005-02-08

Vuong, Quochien B. (Department: 2685)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S569100, C455S575100, C379S432000

Reexamination Certificate

active

06853850

ABSTRACT:
Method and system for controlling operation of radiotelephone speaker volume and/or microphone gain. Using signals from one or more proximity sensors associated with the radiotelephone device, the device determines if a radiotelephone user is within a selected proximity zone for the device. If the user is within the proximity zone, the system adjusts the speaker volume control and/or the microphone gain control according to an estimated user-device distance. If the user is beyond the proximity zone, the system may adjust the speaker volume and/or microphone gain to its maximum value, may provide a notification that the user not within the proximity zone, or may disable the speaker and/or microphone. Several varieties of proximity sensors are used, individually and in combination.

REFERENCES:
patent: 5265264 (1993-11-01), Dzung et al.
patent: 5884156 (1999-03-01), Gordon
patent: 6154538 (2000-11-01), Nakano
patent: 05-183621 (1993-07-01), None

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