Patent ID: 6188057
Filing Date: 2001-02-13
Classification: G11C,H04N

Abstract:
A method of testing a photo-receiver array and its associated read channels, comprising:a) first multiplexing, comprising multiplexing a number of first test voltages with outputs of photo-receivers in the photo-receiver array;b) writing charges to integration capacitors of given ones of said photo-receivers, by connecting the number of first test voltages with outputs of said given ones of said photo-receivers via said first multiplexing;c) subsequent to writing charges to the integration capacitors of said given ones of said one or more photo-receivers, reading charges off of the integration capacitors of said photo-receivers in the photo-receiver array, by connecting the outputs of said photo-receivers in the photo-receiver array with a charge transfer stage via said first multiplexing, and then converting said charges to analog voltages in said charge transfer stage;d) converting said analog voltages to digital values utilizing an analog-to-digital converter; ande) comparing said digital values to expected digital values.