Technique for automatically controlling resolution

Details Technique for automatically controlling resolution Technique for automatically controlling resolution

1997-06-30

1999-11-16

Nguyen, Madeline

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358467, 395102, H04N 132, H04N 140, B41B 1500

Patent

active

059867728

ABSTRACT:
A facsimile machine scans one document page which is a mixture of an elaborative image and a normal image, and transmits the elaborative image portion in a fine mode and the normal image portion in a standard mode, so as to save a transmission time, maintaining the quality of the image. To this end, a previous line is compared with a current line to detect a dot number difference. If the dot number difference is not greater than a predetermined value, a command code is transmitted to a called facsimile machine to print the same image data as that of the previous line. Otherwise, if the dot number difference is greater than the predetermined value, the scanning data is coded by the existing coding method and transmitted to the called facsimile machine. In this way, it may be possible to save the data transmission time.

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