Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-05-26
1989-02-28
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358136, H04N 713
Patent
active
048090670
ABSTRACT:
An image encoding/transmitting apparatus and method implemented by applying the vector quantization technology utilizing the differential pulse code modulation system in which an estimated error signal is compared with a threshold value to generate a change or movement detection signal and a differential signal, which are then quantized so as to be transmitted and received wherein the polarity of the differential signal is judged by a polarity judgment circuit, a polarity is assigned to the threshold value based on the judgment value by a polarity adding circuit, the differential signal is corrected depending on the threshold value with the polarity, and the corrected differential signal is quantized so as to be transmitted and received.
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Asano Kenichi
Goda Naofumi
Kikuchi Hiroaki
Tanno Okikazu
Britton Howard W.
Kostak Victor R.
Mitsubishi Denki & Kabushiki Kaisha
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