標題: A Predefined Bit-Plane Comparison Coding for Mobile Video Applications
作者: Lin, Chien-Chen
Li, Yao
Lee, Chen-Yi
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Embedded compression (EC);H.264;lossy compression;memory reduction;pattern comparison
公開日期: 1-Jul-2011
摘要: For mobile video applications, the required storage and bandwidth of frame memory play crucial roles. Reducing the accesses and the size of frame memory can decrease area and cost, as well as power consumption. Current video-coding standards can reach high compression efficiency but demand large volumes of computations and storage requirements. Hence, it is hard for these coding standards to be embedded into an H. 264 decoder. In this brief, a novel embedded lossy compression scheme is proposed. With a compression ratio at 2, it compresses a 4 x 2 size block into 32 bit with peak-signal-to-noise-ratio loss of 1.27 similar to 3.94 dB compared with H.264. A pipelined architecture is also proposed to realize both the compressor and the decompressor in 2 cycles and 1 cycle, respectively. This cost-effective solution requires a gate count of 4.9 k and power consumption of 244 mu W in a 90-nm standard complementary metal-oxide-semiconductor process, making it very suitable for mobile video applications.
URI: http://dx.doi.org/10.1109/TCSII.2011.2158271
http://hdl.handle.net/11536/21830
ISSN: 1549-7747
DOI: 10.1109/TCSII.2011.2158271
期刊: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
Volume: 58
Issue: 7
起始頁: 437
結束頁: 441
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