Electronic device with wireless power control system
First Claim
1. An electronic device, comprising:
- an accelerometer;
an ear speaker;
a radio-frequency antenna with which radio-frequency signals are transmitted with a transmit power that is capped at a maximum transmit power level; and
circuitry that is configured to adjust the maximum transmit power level based at least partly on data from the accelerometer and at least partly in response to determining that no audio is being played through the ear speaker.
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Accused Products
Abstract
An electronic device may include wireless circuitry that is configured to transmit wireless signals during operation. A maximum transmit power level may be established that serves as a cap on how much power is transmitted from the electronic device. Adjustments may be made to the maximum transmit power level in real time based on sensor signals and other information on the operating state of the electronic device. The sensor signals may include motion signals from an accelerometer. The sensor signals may also include ultrasonic sound detected by a microphone. Device orientation data may be used by the device to select whether to measure the ultrasonic sound using a front facing or rear facing microphone. Maximum transmit power level may also be adjusted based on whether or not sound is playing through an ear speaker in the device.
17 Citations
19 Claims
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1. An electronic device, comprising:
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an accelerometer; an ear speaker; a radio-frequency antenna with which radio-frequency signals are transmitted with a transmit power that is capped at a maximum transmit power level; and circuitry that is configured to adjust the maximum transmit power level based at least partly on data from the accelerometer and at least partly in response to determining that no audio is being played through the ear speaker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electronic device configured to perform wireless communications while located on a surface of an external object, the electronic device comprising:
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a sound source that is configured to emit ultrasonic sound towards the surface; a microphone that is configured to measure a portion of the emitted ultrasonic sound that is transmitted along the surface and to generate a sound level corresponding to the measured portion of the emitted ultrasonic sound; a radio-frequency antenna with which radio-frequency signals are transmitted with a transmit power that is capped at a maximum transmit power level; and circuitry that is configured to adjust the maximum transmit power level based at least partly on the sound level that is generated by the microphone. - View Dependent Claims (11, 12, 13, 14)
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15. A method of adjusting a maximum wireless signal transmit power level in a portable electronic device that includes sensor circuitry and processing circuitry, the method comprising:
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with the sensor circuitry, gathering sensor data; with the processing circuitry, determining whether the portable electronic device is being held against a head of a user of the portable electronic device; with the processing circuitry, determining whether the portable electronic device is resting on a body of the user based at least on the gathered sensor data; with the processing circuitry, determining whether the portable electronic device is resting on a surface based at least on the gathered sensor data; and with the processing circuitry, setting the maximum wireless signal transmit power level to a first level in response to determining that the portable electronic device is being held against the head of the user, setting the maximum wireless signal transmit power level to a second level that is different from the first level in response to determining that the portable electronic device is resting on the body of the user and not held against the head of the user, and setting the maximum wireless signal transmit power level to a third level that is different from the first and second levels in response to determining that the portable electronic device is resting on the surface, not held against the head of the user, and not resting on the body of the user. - View Dependent Claims (16, 17, 18, 19)
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Specification