Method for storing image signals

Details Method for storing image signals Method for storing image signals

1991-03-06

1992-12-22

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Auxiliary signal

358133, 358428, 2503272, H04N 140

Patent

active

051737876

ABSTRACT:
Image signal components of an image signal, which have been detected by scanning an image in main scanning and sub-scanning directions and represent picture elements in the image, are classified into blocks each of which is composed of the image signal components representing the picture elements arrayed along at least a single main scanning line. For each block, primary compressed image signal components are generated from the image signal components corresponding to each block, and secondary compressed image signal components are generated from the primary compressed image signal components and the image signal components corresponding to each block. Control codes are attached at least to an edge of a series of the primary compressed image signal components, which correspond to each block, and to an edge of the corresponding series of the secondary compressed image signal components. The control codes represent that the series of the primary compressed image signal components and the series of the secondary compressed image signal components correspond to each other. An array of the series of the primary compressed image signal components corresponding to the whole image and an array of the series of the secondary compressed image signal components corresponding to the whole image are stored independently of each other.

REFERENCES:
patent: 4903124 (1990-02-01), Hoshi et al.
patent: 4922510 (1990-05-01), Brusewitz
patent: 5001575 (1991-03-01), Nakahara
patent: 5023715 (1991-06-01), Owada et al.
patent: 5060081 (1991-10-01), Shimura

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