Efficient Telescopic Search Motion-Estimation Architecture Based on Data-Flow Optimization

Wujian ZHANG  Runde ZHOU  Tsunehachi ISHITANI  Ryota KASAI  Toshio KONDO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E84-C   No.3   pp.390-398
Publication Date: 2001/03/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Integrated Electronics
Keyword: 
motion estimation,  telescopic search,  systolic array,  latency,  low-power,  

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Summary: 
The ring-like systolic array architecture described in this paper, based on a conventional one-dimensional systolic array architecture, was created through operator rescheduling based on the symmetry of data flow. This eliminated high-latency delay due to the stuffing of the array pipeline in the conventional architecture. The new architecture requires a memory bandwidth no greater than the conventional architecture does, but increases throughput and processor utilization while reducing power consumption.