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A parallel vector-quantization processor eliminating redundant calculations for real-time motion picture compression

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7 Author(s)
T. Nozawa ; Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan ; M. Konda ; M. Fujibayashi ; M. Imai
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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.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:35 ,  Issue: 11 )