SOLID-STATE IMAGE PICKUP DEVICE, SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE, CAMERA, AND SIGNAL PROCESSING METHOD

摘要

Provided are a solid-state image pickup device provided with an A/D conversion unit capable of reducing a linearity error and a differential linearity error in AD conversion and maintaining data continuity, and the like. The solid-state image pickup device is provided with an image pickup unit (10), an A/D conversion unit (70) for converting a pixel signal from the image pickup unit (10) into a digital signal, and a calibration unit (100) for performing calibration on the A/D conversion unit (70). The A/D conversion unit (70) comprises a reference voltage generation unit (40) for generating a plurality of reference voltages, a high-order bit conversion unit (20) for specifying a voltage section in which the pixel signal is included from among a plurality of voltage sections with the respective plurality of reference voltages as the basic points thereof, and a low-order bit conversion unit (30) for converting the difference voltage between the reference voltage that is the basic point of the specified voltage section and the pixel signal into the digital signal. The calibration unit (100) calibrates the plurality of reference voltages in the plurality of voltage sections with the respective reference voltages as the basic points thereof in a plurality of horizontal scanning periods in the beginning of a frame.