Patent ID: 8249166
Filing Date: 2012-08-21
Classification: G11B,H04N

Abstract:
1. A video decoding system, comprising: a decoder configured to decode video data from input Transport Stream (TS) bitstreams, variable-length-decode the decoded video data, and restore pixel values of an original picture through an Inverse Quantization (IQ) process, an Inverse Discrete Cosine Transport (IDCT) process, and a Motion Compensation (MC) process from the variable-length-decoded video data; a video decoder configured to analyze characteristics of video data based on error information, header information, and macroblock information extracted from the decoded video data to generate analysis information, wherein the characteristics of video data are used to support fast forward, reverse play, and generation of a thumbnail image; a first engine configured to generate meta data information based on the generated analysis information, encode the input TS bitstreams, and controllably store the generated meta data information and the encoded input TS bitstreams, wherein the meta data information is associated with storing the input TS bitstreams in a non-transitory storage medium; and a second engine configured to control to search the stored input TS bitstreams in the non-transitory storage medium according to the stored meta data information and decode the searched input TS bitstreams, wherein the video decoder is configured to extract at least one of a representative DC value of luminance blocks, an average DC value of luminance blocks, and a DC value of chrominance blocks from the decoded video data; and process a DC image of an I-picture in a form of a frame difference between two successive I-pictures, a thumbnail image, and a DC histogram of luminance or chrominance.