Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1998-01-14
2000-03-07
Lee, Cheukfan
Facsimile and static presentation processing
Facsimile
Picture signal generator
358406, 358487, 358497, H04N 104, H04N 100
Patent
active
060347910
ABSTRACT:
A method for positioning the initialization position of a light source for an image reading apparatus operated under a passing-light mode is provided. A platen including a reference area that provides a pattern disposed at a position x is provided. The method comprises a first step of positioning the scan model at the position x in order to read the pattern within the reference area. Secondly, the method moves the light source toward the reference area and, at the same time, triggers the scan module to scan the image. Thirdly, repeat the second step until the image scanned by the scan module meets a pre-determined criterion. Fourthly, the method makes the light source module further move a distance of .DELTA.D-.DELTA.d. The .DELTA.d is the distance traveled by the light source during an interval which begins at the capture of the pattern by the scan module and ends at the determination of the pre-determined criterion as being met.
REFERENCES:
patent: 4933778 (1990-06-01), Tufano et al.
patent: 5245440 (1993-09-01), Sato
patent: 5289000 (1994-02-01), Toyofuku
Lin Pin-Hsu
Tang Chien-Hsing
Wu Bing-Hsiu
Acer Peripherals Inc.
Lee Cheukfan
LandOfFree
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