Method for improving data encoding and decoding efficiency

Details Method for improving data encoding and decoding efficiency Method for improving data encoding and decoding efficiency

1997-06-09

2000-08-08

Lee, Thomas D.

Image analysis

Image compression or coding

Lossless compression

382246, 382239, 341107, 341 51, G06K 936, H03M 734, H03M 700

Patent

active

061012815

ABSTRACT:
A method improves the efficiency of a compression technique by introducing a new parameter to be associated with a given probability range for events. When the new parameter is to be utilized, that parameter is associated with a table that matches codes to sequences of events. The coder receives the bit stream, detects a sequence of events and then reads the corresponding code from the table when the coder recognizes that the probability range with respect to the code corresponds to this new parameter. At the decoder the received bit stream is matched to table entries to determine the corresponding event sequence.

REFERENCES:
patent: 5272478 (1993-12-01), Allen
patent: 5381145 (1995-01-01), Allen et al.
patent: 5546080 (1996-08-01), Langdon, Jr. et al.
patent: 5680129 (1997-10-01), Weinberger et al.
patent: 5717394 (1998-02-01), Schwartz et al.
patent: 5751860 (1998-05-01), Su et al.

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