Patent ID: 6195391
Filing Date: 2001-02-27
Classification: H04N

Abstract:
An image processing system for compressing a digital data stream comprising a sequential series of data blocks, each of said data blocks having a beginning and representing a portion of a digitized video image which is displayed as a succession of multi-block frames, the image processing system comprising:a frame buffer store responsive to the digital data stream for storing a plurality of sequential data blocks representing an entire frame of the digitized video image;apparatus responsive to digital data in each of the sequential data blocks for compressing the digital data in each data block using one of a plurality of compression techniques;a comparator mechanism responsive to the stored data blocks and to the digital data stream for inserting into the digital data stream an escape code which indicates a common compression characteristic shared by a plurality of digital data blocks following the escape code; andapparatus responsive to the one of the plurality of compression techniques and to the escape code for inserting a header code at a beginning of each data block, which header code when taken together with a preceding escape code indicates the one of the plurality of compression techniques used.