Journal of Signal Processing Systems
Mobile Phone Programming: and its Application to Wireless Networking
Mobile Phone Programming: and its Application to Wireless Networking
Motion compensation hardware accelerator architecture for H.264/AVC
PSIVT'07 Proceedings of the 2nd Pacific Rim conference on Advances in image and video technology
Context-based adaptive binary arithmetic coding in the H.264/AVC video compression standard
IEEE Transactions on Circuits and Systems for Video Technology
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Practically all modern video coding standards such as H.264, MPEG-4 and VC-1 are based on hybrid transform based block motion compensated techniques, that employ almost the same coding tools. The same approach is used with numerous non-standard proprietary codecs, with decoders available via Internet as browser plugins. For mobile devices power efficient hardware accelerators have been developed, but usually only a few standards are supported. Consequently, the decoding of the other formats, including the non-standard ones is done by software, sacrificing the battery life. In this paper we present programmable accelerators for arithmetic code decoding and motion compensation, that can be used with multiple video standards. These functions consume more than half of the cycles in software based decoders. Although the accelerators were originally designed for H.264 standard, they are rather generic for the respective coding tools. They have been implemented on application specific processor technology for flexibility and energy efficiency with the aim of achieving the performance needed for decoding high definition (1920x1088, 30 fps) video.