Patent ID: 6205256
Filing Date: 2001-03-20
Classification: H03M,H04N

Abstract:
A data compression system, comprising:a vectorizer configured to convert data into a series of data vectors;a classifier configured to select a class from a plurality of classes to which each data vector belongs, the classifier being coupled to the vectorizer for receiving the data vectors;a hierarchical lookup table for each class configured to map each one of the data vectors in the class to a set of codes in a one-to-many relationship each lookup table being coupled to the classifier for receiving the classified data vectors; andwherein the hierarchical lookup table comprises at least a first stage lookup table designed using a codebook design procedure incorporating block transforms and a final stage lookup table designed using a tree structured codebook design procedure such that the data vectors are mapped to the set of codes by successive utilization of the first stage and final stage lookup tables.