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A VIDEO CODEC CHIPSET FOR WIRELESS MULTIMEDIA NETWORKING

机译:用于无线多媒体网络的视频编解码器芯片组

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This paper describes a three-chip encoder/decoder for two-way video communications in a low-bitrate wireless environment. The chipset performs 2D and 3D wavelet transforms, scalar quantization, run-length/huffman coding and bitstream formatting/parsing with fewer than 250K total transistors. The CODEC provides high-quality video at bitrates between several megabits per second down to tens of kilobits per second, with a power consumption an order of magnitude lower than existing CODECs. Robust decoding of corrupted bitstreams is enabled with a hierarchy of synchronization codewords and error concealment. The three chips include a programmable wavelet transform processor, a subband decoding processor and a subbandrnencoding processor, occupying 36 mm~2, 42 mm~2 and 47 mm~2, respectively, in 1.2-micron CMOS.
机译:本文介绍了一种在低比特率无线环境中用于双向视频通信的三芯片编码器/解码器。该芯片组使用少于250K的晶体管执行2D和3D小波变换,标量量化,游程长度/霍夫曼编码以及位流格式化/解析。编解码器以每秒几兆比特到每秒几十千比特的比特率提供高质量的视频,其功耗比现有的编解码器低一个数量级。借助同步代码字和错误隐藏的层次结构,可以对损坏的比特流进行可靠的解码。这三款芯片包括一个可编程小波变换处理器,一个子带解码处理器和一个子带编码处理器,在1.2微米CMOS中分别占据36mm〜2、42mm〜2和47mm〜2。

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