Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-03-26
1992-05-05
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358138, H04N 713
Patent
active
051112930
ABSTRACT:
A predictive coding device comprises sampling circuitry for sub-nyquist sampling a video signal, and predictive coding circuitry for receiving a sampling value from said sampling means and outputting an encoded code. The predictive coding circuitry includes an encoder for encoding a difference between the sampling value and a predicted value corresponding to the sampling value, and outputting the encoded code, and a predictor for generating the predicted value using only an array of pixels in a vertical direction of a screen with respect to a sampling value of a pixel to be encoded by the encoder.
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patent: 4893467 (1989-06-01), Reimann
BBC Research Department Report, No. 16, Tadworth GB, pp. 1-25, J. H. Scott, "Digital Video Bit-Rate Reduction: DPCM for Sub-Nyquist PAL", Oct. 1987.
Patent Abstracts of Japan, vol. 12, No. 13 (E-573) [2860], with respect to JP-A-62 171389 (Jul. 28, 1987), Jan. 14, 1988.
IEEE Transactions on Communications, vol. 25, No. 11, pp. 1295-1302, W. Zschunke, "DPCM Picture Coding with Adaptive Prediction", Nov. 1977.
Canon Kabushiki Kaisha
Kostak Victor R.
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