Patent ID: 9369144
Filing Date: 2016-06-14
CPC Classification: H03M,H04N

Claim Text:
1. An analog-to-digital converter comprising: a gain amplification unit configured to receive a pixel signal at a first node during a first time period, the gain amplification unit configured to amplify a gain of the pixel signal; a first capacitor connected between the first node and a second node during the first time period; an amplifier configured to receive and amplify a signal output from the gain amplification unit and the first capacitor; a conversion circuit configured to convert an output signal of the amplifier to a digital signal based on a reference signal and output the digital signal as a first output signal; and a digital-to-analog converter configured to convert the first output signal to an analog signal, the first capacitor connected between the digital-to-analog converter and the second node during a second time period and configured to receive the analog signal during the second period.