Patent ID: 8692915
Filing Date: 2014-04-08
Classification: H04N

Abstract:
1. A correlated double sampling device of an image sensor, coupled to a plurality of light-sensing pixels arranged along a first direction, the correlated double sampling device of the image sensor comprising: a regulator, providing the light-sensing pixels with a first voltage so that at least one of the light-sensing pixels provides a first linear current and a second linear current according to the first voltage; and a sampling circuit, coupled between a second voltage and the regulator, and comprising a first sampling unit and a second sampling unit to respectively receive the first linear current for a first duration and the second linear current for a second duration and to respectively and correspondingly output a first sampling signal and a second sampling signal, wherein the regulator comprises: an amplifier, having a first input terminal, a second input terminal and an output terminal; and a second transistor, having a first terminal, a second terminal and a third terminal, wherein the first terminal is coupled to the second input terminal, the second terminal is coupled to the sampling circuit and the third terminal is coupled to the output terminal.