Coding method and system, and decoding method and system

Details Coding method and system, and decoding method and system Coding method and system, and decoding method and system

1993-10-15

1999-11-09

Rao, Anand S.

Television

Bandwidth reduction system

Data rate reduction

348403, H04N 718

Patent

active

059824379

ABSTRACT:
A coding method, decoding method, coding system, and decoding system for efficiently variable length coding and variable length decoding quantized data compared with existing ones. Input data is variable length coded by using a variable length coding table 23C or 23D selected among a plurality of variable length coding tables 23C and 23D prepared in accordance with a coding efficiency. Thereby, it is possible to further improve a variable length coding efficiency compared with a case for using only one variable length coding table. As a result, when generating information content equal to that generated by using only one variable length coding table, it is possible to process data quantized with smaller quantized size and further improve the quality of information transmitted as coded data.

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