Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-11-26
1991-11-26
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358136, H04N 712
Patent
active
050687263
ABSTRACT:
A highly efficient coding apparatus comprises a, circuit (2) for block-segmenting picture element data in areas belonging to each of continuous n (n.gtoreq.2) frames of digital picture signals, switching circuit (9) for switching in a block unit, a first mode where all picture element data in the n frames of each block is transmitted and a second mode where picture element data in m frames of the n frames is transmitted, a circuit (12, 13 and 14) for detecting, in the second mode, a difference between an interpolation value which interpolates non-transmission data of an objective block from at least picture element data of the objective block to be transmitted and a real value of the non-transmission data, a control signal generating circuit (17) for generating a control signal for the switching circuit (9) on the objective block based on an output of the detecting circuit (12, 13 and a 14), and circuit (10) for transmitting transmission data of an output of the switching circuit (17) and the control signal SJ.
REFERENCES:
patent: 4994911 (1991-02-01), Nakagawa et al.
Kondo Tetsujiro
Takahashi Kenji
Eslinger Lewis H.
Kostak Victor R.
Maioli Jay H.
Sony Corporation
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