公开(公告)号：US20200036931A1

公开(公告)日：2020-01-30

申请号：US16491555

申请日：2018-02-27

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yutaka ABE ,  Kazuko NISHIMURA ,  Hiroshi FUJINAKA ,  Masahiro HIGUCHI ,  Dai ICHIRYU

IPC: H04N5/3745 ,  H03M1/56 ,  H03M1/38 ,  H04N5/378

Abstract: A solid-state imaging device includes an A/D converter per column. The A/D converter performs a first A/D conversion that (i) refines, using a first comparator, a range including a potential of an analog signal to a range of a potential corresponding to a difference between a first potential and a second potential through a binary search, and further (ii) generates, based on a result of the binary search, a first digital signal being a high-order portion of a digital signal. The A/D converter also performs a second A/D conversion that generates, based on a ramp signal and the result of the binary search, a second digital signal being a low-order portion of a remainder of the digital signal, by measuring a time necessary for an output of a second comparator to be inverted.