Encoding/decoding system utilizing local properties

Details Encoding/decoding system utilizing local properties Encoding/decoding system utilizing local properties

1990-04-17

1992-02-04

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

341 65, 341 67, 358133, H04N 718

Patent

active

050864394

ABSTRACT:
An encoding/decoding system for sequentially encoding input digital signals and sequentially decoding the encoded signals on the basis of the frequency of occurrence of the input digital signals, thereby improving an encoding efficiency. In a variable length encoding/decoding system, sequential lists of encoded values are used in an encoder and sequential lists of decoded values are stored in a decoder for utilizing the frequency of occurrence of the signals. In a vector quantization encoding/decoding system, the frequency of occurrence of input image signals is used to produce code books for storing vectors that are adjacent to an input vector and to form a block using the input image signals located in the same area in consecutive frames.

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patent: 4982285 (1991-01-01), Sugiyama
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