Full Text:   <3769>

CLC number: TN919.8; TP37

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2008-11-10

Cited: 0

Clicked: 6302

Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.12 P.1638-1643

http://doi.org/10.1631/jzus.A0820112


Highly parallel implementation of sub-pixel interpolation for AVS HDTV decoder


Author(s):  Wan-yi LI, Lu YU

Affiliation(s):  Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   leeswane8621@hotmail.com

Key Words:  VLSI architecture, Interpolation, AVS HDTV



Abstract: 
In this paper, we propose an effective VLSI architecture of sub-pixel interpolation for motion compensation in the AVS HDTV decoder. To utilize the similar arithmetical operations of 15 luma sub-pixel positions, three types of interpolation filters are proposed. A simplified multiplier is presented due to the limited range of input in the chroma interpolation process. To improve the processing throughput, a parallel and pipelined computing architecture is adopted. The simulation results show that the proposed hardware implementation can satisfy the real-time constraint for the AVS HDTV (1 920×1 088) 30 fps decoder by operating at 108 MHz with 38.18k logic gates. Meanwhile, it costs only 216 cycles to accomplish one macroblock, which means the B frame sub-pixel interpolation can be realized by using only one set of the proposed architecture under real-time constraints.

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