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Bandwidth-efficient adaptive cache-like buffer architecture in motion compensation for general video codec

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3 Author(s)
Jaehyun Kim ; Multimedia Platform Lab., Samsung Electron., Suwon, South Korea ; Sungoh Kim ; Kosuge, T.

In this paper, we propose the cache-like hardware architecture of motion compensation for general hybrid video codec. The proposed architecture exploits dynamic cache-like buffer structure. Typically, every macroblock unit (MBU) fetches a constant amount of reference data from the external video memory for cache update. However, when the updated data is centered at a fixed position, e.g. considering a zero motion, hit ratio of the cache buffer updates tends to be abruptly dropped. To cope with this problem, an adaptive cache-like buffer shift algorithm was used. From our experimental results, it was demonstrated that the proposed algorithm successfully increased up to the maximum 15% in cache hit ratio and raised the lowest bound of hit ratio to 85%.

Published in:

Consumer Electronics - Berlin (ICCE-Berlin), 2011 IEEE International Conference on

Date of Conference:

6-8 Sept. 2011