Television – Bandwidth reduction system – Data rate reduction
Patent
1996-12-03
1998-07-21
Tung, Kee M.
Television
Bandwidth reduction system
Data rate reduction
382209, H04N 732
Patent
active
057841080
ABSTRACT:
A novel apparatus for and method of reducing the memory bandwidth required to process data located in a window is disclosed. The data located in the window is processed against known template data in accordance with a predetermined function or matching criteria. The criteria could be the best match between data in a given window of data, termed the search window, and data contained in a smaller size template block. The data in the search window is divided into smaller sized blocks. The template block is compared against each block in the search window in order to determine a best match. The invention is described in the context of a motion estimator within a video compression system but is applicable to other areas as well. The invention utilizes a plurality of processing elements and FIFO arrays arranged in a linear array to reduce the memory bandwidth required to process the data within the search window. Data from the search window is initially loaded into the processing elements and then rotated throughout in order to reduce memory accesses. In addition, the search window is traversed in a particular fashion so as to minimize the number of memory accesses required.
REFERENCES:
patent: 5594813 (1997-01-01), Fandrianto et al.
patent: 5650823 (1997-07-01), Ngai et al.
Freizeit Amir
Harlap Michal
Skaletzky Gil
Sperling Erez
Steiner Moshe
Tung Kee M.
Zapex Technologies (Israel) Ltd.
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