Patent ID: 9035227
Filing Date: 2015-05-19
Classification: H03M,H04N

Abstract:
1. A solid-state imaging device comprising: a pixel part in which a plurality of pixels outputting a pixel signal according to an intensity of an input electromagnetic wave are arranged in a shape of a matrix; a delay part which has a plurality of delay units delaying and outputting an input signal; a count part which performs counting based on a clock output from any one of the plurality of delay units, and latches a count result; a latch control part which outputs a control signal at a timing at which a number of the input signal passing through the plurality of delay units becomes a number in accordance with a level of the pixel signal; and a latch part which latches a logic state of an output signal of any one of the plurality of delay units, wherein the latch part includes: a first logic gate which is connected to the one of the plurality of delay units, and performs a logical operation on the output signal of the one of the plurality of delay units; a second logic gate which stops until the control signal output timing at which the control signal is output, and performs a logical operation on an output signal of the first logic gate and outputs a result of the logical operation to the first logic gate after the control signal output timing; a signal output line which connects an input terminal or an output terminal of the first logic gate with the count part; and a switch circuit which outputs the output signal of the one of the plurality of delay units to the count part through the signal output line until the control signal output timing, and switches a connection at a latch timing after a predetermined time elapses from the control signal output timing such that the first logic gate and the second logic gate latch the logic state of the output signal of the one of the plurality of delay units, and wherein the count part, the latch control part, and the latch part are disposed in each column or every a plurality of columns of pixels constituting the pixel part.