ELECTRONIC DEVICE WITH PROXIMITY-BASED RADIO POWER CONTROL
First Claim
1. An electronic device, comprising:
- a capacitive proximity sensor that detects when objects are present within a given distance of the electronic device;
a radio-frequency antenna with which radio-frequency signals are transmitted with a transmit power; and
circuitry that adjusts the transmit power based at least partly on data from the capacitive proximity sensor.
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Accused Products
Abstract
An electronic device such as a portable electronic device may have an antenna and associated wireless communications circuitry. A sensor such as a proximity sensor may be used to detect when the electronic device is in close proximity to a user'"'"'s head. Control circuitry within the electronic device may be used to adjust radio-frequency signal transmit power levels. When it is determined that the electronic device is within a given distance from the user'"'"'s head, the radio-frequency signal transmit power level may be reduced. When it is determined that the electronic device is not within the given distance from the user'"'"'s head, proximity-based limits on the radio-frequency signal transmit power level may be removed. Data may be gathered from a touch sensor, accelerometer, ambient light sensor and other sources for use in determining how to adjust the transmit power level.
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Citations
20 Claims
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1. An electronic device, comprising:
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a capacitive proximity sensor that detects when objects are present within a given distance of the electronic device; a radio-frequency antenna with which radio-frequency signals are transmitted with a transmit power; and circuitry that adjusts the transmit power based at least partly on data from the capacitive proximity sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A handheld electronic device operated by a user, comprising:
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an antenna with which radio-frequency signals are transmitted at a given transmit power; a first sensor that generates sensor data; a second sensor, wherein the second sensor generates proximity data indicative of whether at least part of the user is present within a given distance from the handheld electronic device; and control circuitry that controls the transmit power based at least partly on the sensor data and the proximity data, wherein the control circuitry establishes a transmit power ceiling for the radio-frequency signals based on the proximity data. - View Dependent Claims (11, 12, 13, 14)
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15. A method of operating a handheld electronic device, the method comprising:
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with an antenna, transmitting radio-frequency signals at a transmit power; with a capacitive proximity sensor, determining whether a user is within a given distance from the handheld electronic device; and with control circuitry, adjusting the transmit power in response to determining that the user is within the given distance from the handheld electronic device. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification