A LOW-POWER VIDEO-RATE PYRAMID VQ DECODER

This paper describes a pyramid vector quantization (VQ) decoder chip u sed for real-time video decompression. The chip is designed for portab le applications with very low power requirements, operating at a 1.35 V supply and consuming 6.7 mW with a 6.4 MHz clock, sufficient to deco de 1.27 Mpixels/s for a color display of 176 pixels wide, 240 lines, a t 30 frames per second. The chip performs decompression by converting pyramid vector quantization codewords into data values and integrates all functionality on a single die, requiring no external hardware supp ort or memory.