Method of quantizing predictive errors

Details Method of quantizing predictive errors Method of quantizing predictive errors

1987-03-31

1989-03-21

Atkinson, Charles E.

Excavating

358260, 375 26, 382 56, H04N 712

Patent

active

048150789

ABSTRACT:
Predictive errors are grouped into a plurality of quantizing ranges, and the predictive errors in the respective quantizing ranges are represented by representative quantizing values assigned respectively to the quantizing ranges. The predictive error data items in each of the quantizing ranges are processed to provide a weighted mean value based on the frequency distribution thereto. The weighted mean value or a value close thereto is used as a representative quantized value for that quantizing range.

REFERENCES:
patent: 4190861 (1980-02-01), Lux
patent: 4255763 (1981-03-01), Maxemchuk et al.
patent: 4325085 (1982-04-01), Gooch
patent: 4369463 (1983-01-01), Anastassiou et al.
patent: 4454546 (1984-06-01), Mori
patent: 4563671 (1986-01-01), Lim et al.
patent: 4706260 (1987-11-01), Fedelele et al.

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