Patent ID: 9191591
Filing Date: 2015-11-17
Classification: A61B,H01L,H04N

Abstract:
1. An imaging device, comprising: a photoelectric conversion element that performs photoelectric conversion according to an amount of light received and accumulates a charge; a first transfer unit that transfers the accumulated charge; a charge converter that converts the transferred charge to a voltage or current signal; a charge converter resetting unit that resets the charge converter to a first voltage; a signal output unit that outputs the converted signal; a first transfer line connected to the signal output unit; a transfer capacitor connected to the first transfer line; a second transfer unit that is connected to the first transfer line via the transfer capacitor and to which a signal is output from the first transfer line due to coupling by a capacity of the transfer capacitor; a transfer capacitor resetting unit that resets the transfer capacitor to a second voltage; a second transfer line to which a signal from the second transfer unit is output; a drive unit that causes a signal to be output from the first transfer line via the second transfer unit by a noise signal reading operation and a light-noise sum signal reading operation, the noise signal reading operation resetting the transfer capacitor by the transfer capacitor resetting unit when the signal of the charge converter is output to the first transfer line via the signal output unit after the first transfer unit is turned into an OFF state and the charge converter is reset by the charge converter resetting unit, and the light-noise sum signal reading operation outputting the signal of the charge converter to the first transfer line via the signal output unit after the transfer capacitor resetting unit is turned into an OFF state, the first transfer unit is turned into an ON state, and the charge accumulated by the photoelectric conversion element is transferred; a reference voltage generating unit that generates a reference voltage having a fluctuation component in phase with the second voltage; and an output selector that is connected to the second transfer line and the reference voltage generating unit, and selects and outputs a signal input from the second transfer line and the reference voltage input from the reference voltage generating unit.