Automatic speaker volume and microphone gain control in a portable handheld radiotelephone with proximity sensors
First Claim
1. A method for controlling operation of a radiotelephone, the method comprising:
- determining if a radiotelephone is activated for use;
when the radiotelephone is activated, determining when the radiotelephone is within a selected proximity zone of a radiotelephone user;
when the radiotelephone is activated and is within the proximity zone, estimating a distance d between the radiotelephone and the user and adjusting a volume control for a radiotelephone speaker according to the estimated distance, providing a minimum value Vs(min) of the sneaker volume control and a maximum value Vs(max) of the speaker volume control, and allowing the sneaker volume control to vary monotonically with the distance d between the values Vs(min) and Vs(max).
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Accused Products
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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Citations
20 Claims
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1. A method for controlling operation of a radiotelephone, the method comprising:
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determining if a radiotelephone is activated for use;
when the radiotelephone is activated, determining when the radiotelephone is within a selected proximity zone of a radiotelephone user;
when the radiotelephone is activated and is within the proximity zone, estimating a distance d between the radiotelephone and the user and adjusting a volume control for a radiotelephone speaker according to the estimated distance, providing a minimum value Vs(min) of the sneaker volume control and a maximum value Vs(max) of the speaker volume control, and allowing the sneaker volume control to vary monotonically with the distance d between the values Vs(min) and Vs(max). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling operation of a radiotelephone, the system comprising:
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a detection mechanism that determines when a radiotelephone is activated for use;
a distance sensor, associated with the radiotelephone, that estimates a distance d from the radiotelephone to the user, and that determines when the radiotelephone is within a selected radiotelephone proximity zone;
a speaker volume control, connected to a speaker on the radiotelephone, that receives the estimated distance and adjusts the speaker volume according to the estimated distance between the radiotelephone and the user, that provides a minimum value Vs(min) of the speaker volume and a maximum value Vs(max) of the speaker volume, and that allows the speaker volume to vary monotonically with the distance d between the values Vs(min) and Vs(max), when the radiotelephone is within the proximity zone and is activated for use. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification