Title :
An efficient VLSI implementation of four-step search algorithm
Author :
Wu, Angus ; So, Man F.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong
Abstract :
Four-step search (4SS) performs better than the well known three-step search (3SS) and the new three-step search (N3SS). Since 3SS, N3SS and 4SS are similar algorithms, existing architectures for 3SS and N3SS can be used for 4SS implementation. However, direct implementation of 4SS by existing architectures will cause redundant search. A power efficient VLSI implementation for 4SS is proposed. The implementation focuses on power reduction through a power down technique by dedicated data flow control and usage of calculation elements. The simulation result shows the proposed method increases the system throughput and reduces power consumption by 40%
Keywords :
VLSI; digital signal processing chips; image processing equipment; low-power electronics; motion estimation; search problems; video signal processing; DSP; VLSI implementation; dedicated data flow control; four-step search algorithm; power down technique; power efficient implementation; power reduction; system throughput improvement; Algorithm design and analysis; Data analysis; Design engineering; Electronic design automation and methodology; Electronic mail; Energy consumption; Image sequences; Redundancy; Throughput; Very large scale integration;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.814058
