Patent ID: 7751637
Filing Date: 2010-07-06
Classification: H04N

Abstract:
1. A method of creating synthesized data by synthesizing a plurality of source data that is in compressed format, comprising: extracting, by an apparatus, portions of the plurality of source data; decompressing, by the apparatus, the extracted portions to create decompressed data portions, wherein elements of the decompressed data portions directly express values of red-green-blue (RGB) or luminance-chrominance-chrominance (YUV) format; synthesizing, by the apparatus, two or more of the decompressed data portions derived from different ones of the plurality of source data to create a part of said synthesized data; compressing, by the apparatus, said created part of the synthesized data, wherein the extracting, the decompressing, the synthesizing, and compressing are repeated until the creation of said synthesized data is completed; storing, upon completion of decompressing the extracted data portions, an identifier identifying sources of the extracted portions and an internal status of a decompression unit performing the decompressing step; and restoring a current internal status of the decompression unit to the stored internal status if an identifier of further data portions to be decompressed matches the stored identifier, wherein the stored internal status is related with a codeword of a Huffman tree which was used at the end of the decompressing step.