Chip set for high performance lossless image compression and entropy coding

The first Rice algorithm chip set is described. It operates under laboratory conditions at 25 Msamples/sec independent of entropy or quantization (4-14 b/pixel). The algorithm is lossless and adapts to changing entropy conditions, making it suitable for images. The algorithm requires no external RAM and compression performance exceeds that of differential pulse code modulation (DPCM) with UNIX compress. The encoder can operate at twice the decoding rate. In the laboratory, most encoder parts were fully functional at 60 Msamples/sec, or 840 Mbits/sec at N=14. The chips have been fabricated in a 1.0- mu m CMOS process and are 5 mm on a side.<
>