Patent ID: 8159585
Filing Date: 2012-04-17
Classification: H04N

Abstract:
1. A method for reading out a photo-sensitive region, the method comprising: providing at least one photo-sensitive region; providing at least one transfer gate associated with the photo-sensitive region; providing a charge-to-voltage conversion region electrically connected to the transfer gate; providing a reset mechanism that resets the charge-to-voltage conversion region; resetting the charge-to-voltage conversion region with the transfer gate off; after resetting the charge-to-voltage conversion region, measuring a first sample of the charge-to-voltage conversion region; after measuring the first sample, turning on the transfer gate to transfer charge from the photo-sensitive region to the charge-to-voltage conversion region; after transferring the charge from the photo-sensitive region, measuring two samples V after measuring the two samples V after resetting the charge-to-voltage conversion region the second time, measuring two samples V determining a high conversion gain measurement using an equation (V determining a low conversion gain measurement using an equation (V