Information signal encoding apparatus, encoding method thereof,

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

1998-02-10

1998-11-24

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

341 76, 348421, H03M 300

Patent

active

058413758

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 .increment. 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 .increment.. These values are not transmitted in other than exception process. With predicted values ZR and .increment., difference signals corrected with the offset off are quantized by a quantizing circuit.

REFERENCES:
patent: 5453791 (1995-09-01), Ohki
patent: 5542008 (1996-07-01), Sugahara et al.
patent: 5719962 (1998-02-01), Sugahara et al.

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