A parallel vector-quantization processor eliminating redundant calculations for real-time motion picture compression
A parallel vector-quantization processor eliminating redundant calculations for real-time motion picture compression
复制标题
并行矢量量化处理器消除实时运动图像压缩的冗余计算
DOI：
10.1109/4.881222
复制
发表时间：
2000
影响因子：
5.4
通讯作者：
T. Ohmi
中科院分区：
文献类型：
--
作者：
T. Nozawa;M. Konda;M. Fujibayashi;M. Imai;K. Kotani;S. Sugawa;T. Ohmi
一个并行矢量量化（VQ）处理器已被开发，旨在使用0.35-/spl μ/m的三层金属CMOS工艺的运动图像的实时压缩。该芯片采用了一种新的矢量量化编码搜索算法，以减少硬件体积。因此，芯片的管芯面积减少到只有传统的完全并行设计的33%。该芯片单芯片可处理2048个模板矢量，适用于30帧/秒的全彩色VGA（640/spl次/480像素）图像的实时压缩。该芯片工作频率为33 MHz，在2.5 V电源电压下功耗为790 mW。作为该芯片的一个应用，本文介绍了一个实时运动图像压缩系统。该系统可以在64 kb/s以下每秒传输5幅全色QVGA（320/spl次/240像素）图像。
A parallel vector-quantization (VQ) processor has been developed aiming at real-time compression of motion pictures using a 0.35-/spl mu/m triple-metal CMOS technology. The chip employs a new search algorithm for VQ encoding to reduce hardware volume. As a result, the die area of the chip is decreased to only 33% of that of conventional fully parallel design. This chip can handle 2048 template vectors by a single chip and is applicable to real-time compression of 30 frames/s full-color VGA (640/spl times/480 pixels) images. The chip operates at 33 MHz with power dissipation of 790 mW under 2.5-V power supply. A real-time motion picture compression system is demonstrated as an application of the chip. This system can transmit five full-color QVGA (320/spl times/240 pixels) images per second below 64 kb/s.