A system and method of compressing and decompressing a digital signal using scaled quantization of variable-sized packets of difference samples. Difference samples are generated and subdivided into packets. Packet boundaries may be moved to maximize resolution. A scale value is established for each packet,...http://www.google.de/patents/US5491685?utm_source=gb-gplus-sharePatent US5491685 - System and method of digital compression and decompression using scaled quantization of variable-sized packets