Long range proximity and/or motion detector with ambient light detection capabilities
First Claim
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1. A system configured for ambient light detection, proximity detection and motion detection, the system comprising:
- a front end configured toreceive a detected light signal generated using a light detector, wherein the detected light signal is indicative of both detected ambient light as well as detected radio frequency (RF) pulsed light produced by a light source pulsed at an RF frequency;
output a detected ambient light signal primarily indicative of the portion of the detected light signal that is indicative of detected ambient light; and
output a detected RF light signal primarily indicative of the portion of the detected light signal that is indicative of the detected RF pulsed light;
an ambient channel configured to produce one or more ambient output signal indicative of the detected ambient light in dependence on the detected ambient light signal;
a proximity channel configured to produce one or more proximity output signal indicative of proximity of an object relative to the system, in dependence on the detected RF light signal; and
a motion channel configured to produce one or more motion output signal indicative of motion of an object relative to the system, in dependence on the detected RF light signal.
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Abstract
Provided herein are optical sensor systems that can be used for ambient light detection, proximity detection and motion detection, as well as to larger systems that include such an optical sensor system, and to related methods. In an embodiment, the optical sensor system includes a front end, an ambient light channel, a proximity channel and a motion channel. In an embodiment, offset and gain of the proximity channel is adjusted based on motion detected by the motion channel.
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Citations
20 Claims
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1. A system configured for ambient light detection, proximity detection and motion detection, the system comprising:
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a front end configured to receive a detected light signal generated using a light detector, wherein the detected light signal is indicative of both detected ambient light as well as detected radio frequency (RF) pulsed light produced by a light source pulsed at an RF frequency; output a detected ambient light signal primarily indicative of the portion of the detected light signal that is indicative of detected ambient light; and output a detected RF light signal primarily indicative of the portion of the detected light signal that is indicative of the detected RF pulsed light; an ambient channel configured to produce one or more ambient output signal indicative of the detected ambient light in dependence on the detected ambient light signal; a proximity channel configured to produce one or more proximity output signal indicative of proximity of an object relative to the system, in dependence on the detected RF light signal; and a motion channel configured to produce one or more motion output signal indicative of motion of an object relative to the system, in dependence on the detected RF light signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system configured for proximity detection and motion detection, the system comprising:
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a front end configured to receive a detected light signal generated using a light detector, wherein the detected light signal is indicative of both detected ambient light as well as detected radio frequency (RF) pulse light produced by a light source pulsed at an RF frequency; and output a detected RF light signal primarily indicative of the portion of the detected light signal that is indicative of detected RF light; a proximity channel configured to produce one or more proximity output signal indicative of proximity of an object relative to the system, in dependence on the detected RF pulsed light signal or an amplified and/or filtered version thereof; and a motion channel configured to produce one or more motion output signal indicative of motion of an object relative to the system, in dependence on the detected RF light signal or an amplified and/or filtered version thereof. - View Dependent Claims (12, 13, 14, 15)
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16. A method for ambient light detection, proximity detection and motion detection, the method comprising:
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(a) receiving a detected light signal generated using a light detector, wherein the detected light signal is indicative of both detected ambient light as well as detected radio frequency (RF) pulsed light produced by a light source pulsed at an RF frequency; (b) producing, based on the received the detected light signal, a detected ambient light signal and a detected RF light signal, wherein the detected ambient light signal is primarily indicative of the portion of the detected light signal that is indicative of detected ambient light, and wherein the detected RF light signal is primarily indicative of the portion of the detected light signal that is indicative of the detected RF pulsed light; (c) providing the detected RF light signal or an amplified and/or filtered version thereof to both a proximity channel and a motion channel; (d) using the proximity channel to produce a proximity output signal indicative of proximity of an object relative to the system, based on the detected RF light signal or the amplified and filtered version thereof; and (e) using the motion channel to produce one or more motion output signal indicative of motion of an object relative to the system, based on the detected RF light signal or the amplified and/or filtered version thereof. - View Dependent Claims (17, 18, 19, 20)
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Specification