Fully parallel vector-quantization processor for real-time motion-picture compression

Akira Nakada, Tadashi Shibata, Masahiro Konda, Tatsuo Morimoto, Tadahiro Ohmi

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)822-830
Number of pages9
JournalIEEE Journal of Solid-State Circuits
Issue number6
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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