Image processing system and data modulation/demodulation method

Details Image processing system and data modulation/demodulation method Image processing system and data modulation/demodulation method

1991-04-11

1994-07-26

Powell, Mark R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358426, 375122, H04N 141

Patent

active

053330633

ABSTRACT:
The present invention relates to an image processing system and data modulation/demodulation method thereof which compresses level of an input image information to that of an audio information to transfer them through conventional telephone liens after reproducing the stored data stored in a memory. This invention makes it possible to compress or reconstruct the image data without loss. The input image data are compressed to audio data level by factorial-code-conversion, cubic-code-conversion, and FASCM conversion, and are again reconstructed to an original image data by inverse.

REFERENCES:
patent: 4933957 (1990-06-01), Bottau et al.
patent: 4974099 (1990-11-01), Lin et al.
patent: 5103306 (1992-04-01), Weiman et al.

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