Wide-Dynamic-Range Image Sensor Using Pixel-Parallel Reset Judgment

Abstract

Wide dynamic-range image sensors are now used for various applications such as intelligent transport systems and security systems. We propose a new image-sensor that controls the reset timing of the photodiode in each pixel. When a pixel value exceeds a threshold during the integration period, this sensor immediately resets the photodiode and records the number of resets in a memory. By using this sensor, linear-wide dynamic-range images can be obtained.