Samsung Electronics Co., Ltd.

Claudio Jakobson

Vadim Gelfand

Dmitry Aizenshtat

A CDS device of an image sensor having a pixel array includes first comparators, second comparators and third comparators. The first comparators are coupled to columns of the pixel array, and generate a positive amplified signal and a negative amplified signal by comparing the analog signal and a ramp signal. The second comparators are coupled to a first set of the first comparators coupled to first columns of the pixel array, and generate a first comparison signal enabled to a first logic level by comparing the positive amplified signal and the negative amplified signal. The third comparators are coupled to a second set of the first comparators coupled to second columns of the pixel array, and generate a second comparison signal enabled to a second logic level by comparing the positive amplified signal and the negative amplified signal.

Correlated double sampling device and image sensor

A correlated double sampling circuit includes a first input terminal receiving a ramp signal having first and second ramp sections, a second input terminal receiving a pixel signal, and a comparing circuit comparing the ramp signal with the pixel signal to generate an output signal, wherein the comparing circuit changes a point in time at which the output signal logically transitions during the first ramp section and the second ramp section in response to an applied dithering enable signal.

Growing community of inventors

Hwaseong-si, South Korea

Claudio Jakobson