Method for adjusting a controller of a scanner

Details Method for adjusting a controller of a scanner Method for adjusting a controller of a scanner

2007-12-18

2010-10-19

Williams, Kimberly A (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Measuring, testing, and calibrating

C358S406000, C358S474000

Reexamination Certificate

active

07817315

ABSTRACT:
A method for adjusting a controller of a scanner includes obtaining a scan of a predefined image. The method further includes moving the sensor-element signals of the control signal pattern generated by the controller earlier in the pattern by at least one unit and obtaining an additional scan. The obtaining and moving are repeated until a comparison of a latest additional scan to the image is worse than a comparison of a second-latest additional scan to the image. Another method obtains a noise-reducing heuristic which modifies a time parameter of a sensor-element signal. A set of repeated scans of a same scan line is obtained, noise is measured there from, the time parameter is modified by one predetermined unit, and the process repeats until the noise measured from the latest set of repeated scans is worse than that from the second-latest set of repeated scans.

REFERENCES:
patent: 5194966 (1993-03-01), Quardt et al.
patent: 6327047 (2001-12-01), Motamed

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