Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-01-24
1992-05-05
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358105, H04N 713
Patent
active
051112949
ABSTRACT:
A picture signal encoding and decoding apparatus which transmits a digital picture signal by encoding, and receives and decodes an incoming encoded signal comprises a configuration in which a condition not to make a receiving buffer overflow can be controlled on the transmitting side, and a plurality of quantizers are prepared and a proper quantizing characteristic is selected and used according to the sequence of transformed coefficients and the size of a motion vector. Therefore, it is not necessary to prepare a receiving buffer of a large capacity or a high speed decoding circuit, so that the apparatus can be manufactured at a low cost and the stability of operation is improved and also a signal can be compressed efficiently owing to the realization of quantization corresponding to a statistical characteristic of an input signal.
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Von Peter Vogel, "Videobild auf der Datenleitung", Funkschau, No. 26, 1988, Franzis-Verlag, Munich, pp. 60-63.
Von Bernard Hammer, "Transformationscodierung von Bildsequenzen mit der M-Hadamard-Transformation", Frequenz, No. 7/8, 1985, pp. 226-234.
Asai Kohtaro
Matsuzaki Kazuhiro
Murakami Tokumichi
Kostak Victor R.
Mitsubishi Denki & Kabushiki Kaisha
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