CMOS image sensor implementing correlated double sampling with compression

摘要

An image sensing device and image sensing method are described herein. By way of example, the imaging sensing device includes a two-dimensional array of light sensing elements, each light sensing element being configured to generate an output signal indicative of an intensity level of light impinging on the light sensing element, one or more analog-to-digital converters configured to digitize output signals read out from the array of light sensing elements to generate digital output pixel values, a control circuit configured to generate digital pixel reset values, and a compression module configured to receive the digital pixel reset values and to generate a compressed digital pixel reset value corresponding to each digital pixel reset value.

主权项

1. An image sensing device comprising:
an analog-to-digital converter configured to digitize output signals read out from a light sensing elements to generate digital output pixel values including digital pixel reset values and digital light-dependent pixel values; compression circuitry configured to generate compressed digital pixel reset values based on the digital pixel reset values; and CDS circuitry configured to generate CDS corrected output pixel values based on the compressed digital pixel reset values and the digital light-dependent pixel values.