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

Claim 13:
14. An apparatus comprising:
a first photodiode configured to generate a first charge in response to a first component of light within a first exposure period having a first duration;
a second photodiode configured to generate a second charge in response to a second component of the light within a second exposure period having a second duration;
a first charge sensing unit configured to accumulate at least a part of the first charge within the first exposure period;
a second charge sensing unit configured to accumulate at least a part of the second charge within the second exposure period;
a quantizer; and
a controller configured to:
determine, using the quantizer and within a 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, wherein the first duration and the third duration are individually programmable;
based on whether the first quantity exceeds the first threshold, output a first value representing the first time or a second value, from the quantizer, 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;
determine, 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, wherein the second duration and the fourth duration are individually programmable; and
based on whether the third quantity exceeds the second threshold, output a third value representing the second time or a fourth value, from the quantizer, 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.