Search International and National Patent Collections

1. (WO2018138958) AD CONVERSION DEVICE AND IMAGE CAPTURING DEVICE

Pub. No.:    WO/2018/138958    International Application No.:    PCT/JP2017/033602
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Sep 16 01:59:59 CEST 2017
IPC: H04N 5/378
H03M 1/56
H04N 5/374
Applicants: TECHPOINT, INC.
テックポイント インク
Inventors: KASAI, Gen
笠井 弦
Title: AD CONVERSION DEVICE AND IMAGE CAPTURING DEVICE
Abstract:
The present invention is provided with: a comparison unit 31 which compares a first reference signal and a second reference signal with a pixel signal including a reset component and a signal component; an up counter 34 which up-counts a counter clock; and a black level correction unit 35 which corrects a black level of a count value of the up counter 34, wherein the up counter 34 starts an up-count when the comparison unit 31 compares the first reference signal with the reset component to invert an output, and stops the up-count when the comparison unit 31 compares the second reference signal with the signal component to invert the output. An image-captured data, in which the black level is corrected and the reset component is removed from the signal component, is output by subtracting, from a count value counted by the up counter 34, a value counted by the up counter 34 for a pixel signal from a shielded pixel.