Image sensor, imaging device, endoscope, endoscope system and driving method of image sensor

Abstract

An image sensor comprises: multiple pixels that are arranged in a two-dimensional matrix, receive light from outside, and generate and output an imaging signal corresponding to the amount of received light; a reference voltage generation unit which generates a reference voltage; and a phase adjustment signal generation unit which outputs a phase adjustment signal to be used for phase adjustment in response to the reference voltage when the pixels are not outputting an imaging signal.

Description

technical field [0001] The present invention relates to an imaging element, an imaging device, an endoscope, an endoscope system, and a driving method of the imaging element. Background technique [0002] In an imaging device having a CMOS (Complementary Metal-Oxide Semiconductor: Complementary Metal-Oxide Semiconductor) imaging element, power consumption differs between a blanking period and an imaging signal period. Therefore, at the beginning of the imaging signal period, fluctuations in power supply voltage occur due to fluctuations in power consumption, and image distortion occurs. [0003] In order to suppress such fluctuations in power consumption, there has been proposed a method of providing a circuit for passing a current while power consumption is falling (for example, refer to Patent Document 1). In the technology described in Patent Document 1, during the blanking period when the load current of the horizontal transfer circuit falls below a predetermined thresh...

AI Technical Summary

Problems solved by technology

Therefore, at the beginning of the imaging signal period, fluctuations in power supply voltage occur due to fluctuations in power consumption, resulting in image distortion.

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