Patent ID: 11943561
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 23:
24. A method, comprising:
setting a first exposure period to have a first duration;
setting a first measurement period to have a second duration, the first measurement period being set separately from the first exposure period;
setting a second exposure period to have a third duration;
setting a second measurement period to have a fourth duration, the second measurement period being set separately from the second exposure period;
enabling a first photodiode to generate a first charge in response to a first component of light within the first exposure period having the first duration;
enabling a second photodiode to generate a second charge in response to a second component of the light within the second exposure period having the second duration;
accumulating, by a first charge sensing unit, at least a part of the first charge within the first exposure period;
accumulating, by a second charge sensing unit, at least a part of the second charge within the second exposure period;
determining, using a quantizer and within the first measurement period having a third duration, whether a first quantity of the at least a part of the first charge accumulated at the first charge sensing unit exceeds a first threshold, and a first time it takes for the first quantity to exceed the first threshold;
based on whether the first quantity exceeds the first threshold, outputting a first value representing the first time or a second value representing a second quantity of the first charge generated by the first photodiode within the first exposure period to represent an intensity of the first component of the light;
determining, using the quantizer and within a second measurement period having a fourth duration, whether a third quantity of the at least a part of the second charge accumulated at the second charge sensing unit exceeds a second threshold, and a second time it takes for the second quantity to exceed the second threshold; and
based on whether the third quantity exceeds the second threshold, outputting a third value representing the second time or a fourth value representing a fourth quantity of the second charge generated by the second photodiode within the second exposure period to represent an intensity of the second component of the light.