Methods and means for image and voice compression

Details Methods and means for image and voice compression Methods and means for image and voice compression

1998-11-10

2000-01-25

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

Adaptive coding

341 87, H03M 730

Patent

active

060183039

ABSTRACT:
A system for lossy compression of digital data for transmission to a remote location or to a storage medium and subsequently reconstructing the digital data includes an encoder which compares sequences of characters with an encoder database of data records to generate a compressed code. The compressed code includes pointer information relating to locations within the encoder database of data records corresponding within a given average distortion tolerance level per character to the sequences, and update information for the addition to the encoder database of new data records corresponding within the average distortion tolerance level per character to the sequences. The system also includes a decoder for receiving the compressed code, the receiver processing the compressed code to substantially reconstruct the digital data.

REFERENCES:
patent: 3394352 (1968-07-01), Wernikoff
patent: 4281312 (1981-07-01), Knudson
patent: 5442351 (1995-08-01), Horspool et al.

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