Patent ID: 7990426

Claim:
A phase adjusting device for adjusting a phase of a pulse used in imaging in an imaging device based on a digital imaged signal obtained by converting an analog imaged signal from the imaging device to a digital value for every pixel; the phase adjusting device comprising: a luminance level detecting unit for detecting a luminance level of the digital imaged signal for a plurality of pixels within a first pixel region of the imaging device; a variance calculating unit for calculating a variance indicating signal variation between pixels in the digital imaged signal for a plurality of pixels in a second pixel region of the imaging device; and a timing adjustment unit for giving a phase adjustment instruction of the pulse to the imaging device so as to converge to an optimum phase of the pulse set based on the calculation results of the luminance level detecting unit and the variance calculating unit, and controlling the imaging device so that an exposure state of the analog imaged signal is suited for a luminance level detection process by the luminance level detecting unit and a variance calculation process by the variance calculating unit, wherein the imaging device includes a reset shift register for providing a reset pulse to each line and a reset mask control unit for controlling the provision of the reset pulse for every line; and the timing adjustment unit controls the reset mask control unit to simultaneously acquire the bright section data for the luminance level detection and the dark section data for the variance calculation in one frame.