Patent ID: 6256350
Filing Date: 2001-07-03
Classification: H03M,H04N

Abstract:
A video compression method for maximizing a throughput of digitized video data on a link between a digital solid-state imaging device and a host computer, comprising the steps of:performing the luminance (Y) domain compression of the video data on a line-by-line basis without storing video data lines or video data frames by tagging pixels in the video line on a pixel-by-pixel basis, according to differences in their luminance values;performing the chrominance (Cr/Cb) domain averaging of the video data on a region-by-region basis without storing video data frames, wherein the step of the Cr/Cb domain compression comprises the following steps:obtaining a single Cr value for each four Cr values in the 4:2:0 format, and obtaining a single Cr value for each eight Cr values in the 4:2:2 format;calculating a single average value for a plurality of Cb locations; andtransmitting the average Cr and Cb values to the host computer; andwherein said Y and Cr/Cb domain compression steps are implemented in the digital solid-state imaging device hardware for real time link transmission of the compressed video data to the host computer.