Automatic speaker volume and microphone gain control in a portable handheld radiotelephone with proximity sensors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 8, 2005
Grant Date -
Jun 6, 2002
app pub date -
Dec 4, 2000
filing date -
Dec 4, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
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