Facsimile device with skew correction and text line direction de

Details Facsimile device with skew correction and text line direction de Facsimile device with skew correction and text line direction de

1990-12-10

1993-03-02

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

3582611, 358488, 382 46, H04N 1413, G06K 932, G06K 936

Patent

active

051914387

ABSTRACT:
Disclosed is a facsimile device enabling data transmission in high efficiency independently of the direction in which an original is drawn into the facsimile device. The facsimile device includes a scanner for reading the original, an image memory for storing a read image signal, a circuit for detecting the direction of text lines of a read pixel signal, a circuit for determining whether or not the text line direction is close to a longitudinal direction or a lateral direction of arrangement of memory cells in the image memory, a circuit for executing an operation for rotating the image signal by a predetermined angle when a determination is made that the text line direction is closer to the longitudinal direction, a compression circuit for reading the rotated image signal in the lateral direction of the arrangement of the memory cells, to compress the read image signal, and a transmission circuit for transmitting the compressed signal onto lines.

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patent: 5033104 (1991-07-01), Amano
patent: 5093653 (1992-03-01), Ikehira
"A Draft of CCITT Recommendation Related to the Facsimile Transmission Coding Systems Group III".
"Background Description of the Coding Systems Such as MH, MR, MMR Systems" Nikkei electronics May 30, 1988.
Advances in Facsimile Art, by Kazuo Kobayashi, 2460 IEEE Communication Magazine, vol. 23 (1985) Feb. No. 2, New York, N.Y. U.S.A.

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