Systems and methods for determining ambient illumination having a bypass switch
AssigneeStack Labs, Inc.
InventorsNeil Joseph, Francis Joseph
Life of this patent
Estimating the term…
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.
Claims20
A system for measuring an ambient light level in a volume that is lighted by a pulsating light source, comprising:
- a first light sensor configured to generate a first signal based on an amount of light detected in the volume;
- a bypass switch 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 configured to generate a second signal based on an environment in the volume;
- a difference circuit configured to determine a difference magnitude between the second signal and the first signal to generate an ambient light signal.
A method of measuring an ambient light level in a volume that is lighted by a pulsating light source, comprising:
- generating a first signal based on an amount of light detected in the volume by a first light sensor;
- controlling a bypass switch 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;
- generating a second signal based on an environment in the volume detected by a second sensor;
- determining an ambient light level based on a difference magnitude between the second signal and the first signal.
Dependencies are inferred from the claim text.