Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1977-02-22
1979-12-18
Gruber, Felix D.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
179 1555R, 358 13, H04N 540, H04N 940
Patent
active
041797108
ABSTRACT:
A predictive encoder is disclosed which has a non-linear quantizing characteristic. The transmission gain of the quantizer is less than unity when the amplitude component of the predictive error signal is smaller than a predetermined level and is substantially equal to unity when the amplitude component of the predictive error signal is higher than the predetermined level. As a result, undesired redundancy components are effectively suppressed without causing an increase in quantizing noise and a deterioration in information quality.
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Analog Devices Inc: A/D Conversion Handbook, Norwood, MA., Jun. 1972, pp. I-64/65.
Iijima Yukihiko
Ishiguro Tatsuo
Suzuki Norio
Gruber Felix D.
Nippon Electric Co. Ltd.
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