Image encoding apparatus

Details Image encoding apparatus Image encoding apparatus

1992-02-03

1993-10-05

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, 358136, H04N 7133

Patent

active

052510298

ABSTRACT:
In an image encoding apparatus, conversion data obtained by converting image information onto a frequency region, and corresponding to several frames, are parallelly output using a one-frame-period delay circuit. The parallelly output conversion data are quantized by a quantization circuit, and the amount of data to be obtained when the quantized data are encoded is determined by a variable-length coding circuit. The data amount information is input to a coefficient operation circuit for determining a quantization step for use in the next stage. Conversion data quantized according to an output from the coefficient operation circuit are encoded, and the encoded data are output.

REFERENCES:
patent: 4541012 (1985-09-01), Tescher
patent: 5109451 (1992-04-01), Aono

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