Information signal encoding apparatus, encoding method thereof,

Details Information signal encoding apparatus, encoding method thereof, Information signal encoding apparatus, encoding method thereof,

1996-07-23

1998-07-14

Tung, Bryan

Television

Bandwidth reduction system

Data rate reduction

348408, 348421, H04N 732

Patent

active

057812381

ABSTRACT:
Difference signals generated in the prediction encoding process for an input digital information signal are block segmented. The maximum value and minimum value of each block are detected. In addition, a quantizing step .DELTA. is calculated. An offset detecting circuit detects a zero position flag ZR and an offset off. The zero position flag ZR represents a quantized code that includes 0. The offset off represents the deviation between value 0 of difference signals and value 0 of restored representative values. A class category adaptive predicting circuit predicts ZR and .DELTA.. These values are not transmitted in other than exception process. With predicted values ZR and .DELTA., difference signals corrected with the offset off are quantized by a quantizing circuit.

REFERENCES:
patent: 5070402 (1991-12-01), Ishii et al.
patent: 5706009 (1998-01-01), Kondo et al.

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