公开(公告)号：US20160205333A1

公开(公告)日：2016-07-14

申请号：US15073600

申请日：2016-03-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SANSHIRO SHISHIDO ,  MASAHIRO HIGUCHI ,  DAI ICHIRYU ,  KAZUKO NISHIMURA ,  YUTAKA ABE

IPC: H04N5/357 ,  H04N5/3745 ,  H04N5/243 ,  H04N5/378

CPC classification number: H04N5/357 ,  H04N5/243 ,  H04N5/3658 ,  H04N5/374 ,  H04N5/37452 ,  H04N5/37455 ,  H04N5/378

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.

Abstract translation: 抑制条纹的固态成像装置包括单位单元以矩阵排列的成像区域，用于将在摄像区域中生成的模拟信号转换为数字信号的A / D转换器和具有输入端子的斜坡缓冲器 和输出端子。 斜坡电压被输入到输入端子，并且具有斜坡电压的参考信号从输出端子向A / D转换器输出。 A / D转换器包括一个比较器，用于比较模拟信号与参考信号的每列中的一个比较器，和一个对应于比较器的计数器，用于对比较器的比较周期进行计数。 斜坡缓冲器包括用于同时将参考信号输出到多个比较器的反馈电路，并且根据从端子输出的参考信号的斜坡电压来控制流向输出端子的电流量。