Encoder and decoder

Details Encoder and decoder Encoder and decoder

1997-08-29

1998-08-11

Britton, Howard

Television

Bandwidth reduction system

Data rate reduction

348420, 3488451, 370471, 371 21, 375246, 375253, H04N 736, H04N 750

Patent

active

057934320

ABSTRACT:
An encoder counts the length of a data produced by the variable-length encoding, and time-division-multi-plexes information of the data length to the variable-length encoded data. Art encoder time-division-multiplexes information of the number of bits after a fixed partition used in the error-correction encoding to the initial bit of a variable-length code to a variable-length encoded data, and transmits them. An encoder, when a variable-length code for one symbol of the variable-length encoding extends over a partition used in the error-correction encoding, inserts a special code before the partition, or guarantees that the top of the partition is always at the top of the variable-length code. An encoder obtains the sum of fields and the difference between fields, and performs on these values the orthogonal transform to encode them.

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