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A fully parallel vector-quantization processor for real-time motion-picture compression

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5 Author(s)
Nakada, A. ; VLSI Design & Educ. Center, Tokyo Univ., Japan ; Shibata, T. ; Konda, M. ; Morimoto, T.
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A vector-quantization (VQ) processor system has been developed aiming at real-time compression of motion pictures using a 0.6-μm triple-metal CMOS technology. The chip employs a fully parallel single-instruction, multiple-data architecture having a two-stage pipeline. Each pipeline segment consists of 19 cycles, thus enabling the execution of a single VQ operation in only 19 clock cycles. As a result, it has become possible to encode a full-color picture of 640×480 pixels in less than 33 ms, i.e., the real-time compression of moving pictures has become available. The chip is scalable up to eight-chip master-slave configuration in conducting fully parallel search for 2-K template vectors. The chip operates at 17 MHz with a power dissipation of 0.29 W under a power-supply voltage of 3.3 V

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Solid-State Circuits, IEEE Journal of  (Volume:34 ,  Issue: 6 )