Title:
固体撮像装置及び撮像装置
Document Type and Number:
Japanese Patent JP6442711
Kind Code:
B2
Abstract:
A solid-state imaging device that suppresses streaking includes an imaging region in which unit cells are aligned in matrix, an A/D converter for converting an analog signal generated in the imaging region to a digital signal, and a ramp buffer having an input terminal and an output terminal. Ramp voltage is input to the input terminal, and a reference signal having the ramp voltage is output from the output terminal toward the A/D converter. The A/D converter includes a comparator disposed in each column for comparing an analog signal with a reference signal, and a counter disposed corresponding to the comparator for counting a comparison period of the comparator. The ramp buffer includes a feedback circuit for simultaneously outputting the reference signal to the multiple comparators and controlling the amount of current flowing to the output terminal according to the ramp voltage of the reference signal output from the terminal.
Inventors:
Sanshiro Shishido
Masahiro Higuchi
Ichiyanagi Dai
Yoshiko Nishimura
Yutaka Abe
Masahiro Higuchi
Ichiyanagi Dai
Yoshiko Nishimura
Yutaka Abe
Application Number:
JP2015550533A
Publication Date:
December 26, 2018
Filing Date:
June 06, 2014
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H04N5/378; H03M1/12; H03M1/38
Domestic Patent References:
| JP2013179577A | ||||
| JP2006109117A | ||||
| JP2005218117A |
Foreign References:
| WO2013080412A1 |
Attorney, Agent or Firm:
Kenji Kamada
Hiroo Maeda
Hiroo Maeda