Systems and methods for determining ambient illumination having dual sensors controlled by a bypass switch
First Claim
1. A system for measuring an ambient light level in a volume that is lighted by a pulsating light source, comprising:
- a bypass switch configured to bypass a first sensor at a first point in time when the light source is on and to not bypass the first sensor at a second point in time when the light source is off;
a second sensor configured to generate a second signal based on an environment in the volume; and
a circuit configured to determine a level of ambient light based on the first signal and the second signal.
4 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods are provided for measuring an ambient light level in a volume that is lighted by a pulsating light source. A first light sensor is configured to generate a first signal based on an amount of light detected in the volume. A bypass switch is configured to bypass the first light sensor at a first point in time when the light source is on and to not bypass the first light sensor at a second point in time when the light source is off. A second sensor is configured to generate a second signal based on an environment in the volume, and a difference circuit is configured to determine a difference magnitude between the second signal and the first signal to generate an ambient light signal.
12 Citations
20 Claims
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1. A system for measuring an ambient light level in a volume that is lighted by a pulsating light source, comprising:
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a bypass switch configured to bypass a first sensor at a first point in time when the light source is on and to not bypass the first sensor at a second point in time when the light source is off; a second sensor configured to generate a second signal based on an environment in the volume; and a circuit configured to determine a level of ambient light based on the first signal and the second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of measuring an ambient light level in a volume that is lighted by a pulsating light source, comprising:
controlling a bypass switch to bypass a first sensor at a first point in time when the light source is on and to not bypass the first sensor at a second point in time when the light source is off; generating a second signal based on an environment in the volume detected by a second sensor; determining an ambient light level based on the first signal and the second signal. - View Dependent Claims (17, 18, 19, 20)
Specification