System for determining return of photo sensor in scanner and...

Details System for determining return of photo sensor in scanner and... System for determining return of photo sensor in scanner and...

2007-09-04

2007-09-04

Lee, Cheukfan (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S474000, C358S471000, C358S488000

Reexamination Certificate

active

11043956

ABSTRACT:
A system for determining the return of the photo sensor in the scanner and the method thereof are disclosed. There are two base position sensing units in the system. Each of the base position sensing units computes the currents in two sections of a line resistance material defined by the position of the photo sensor after a document is scanned to determine which base position sensing unit the photo sensor should return to. This method reduces the return time of the photo sensor than the prior art in which the photo sensor can only return to a single end. Therefore, the system helps achieving the goals of increasing the scanning efficiency and saving power. Moreover, the system realizes the image scanning in both directions.

REFERENCES:
patent: 5687010 (1997-11-01), Van Tilborg et al.
patent: 6388778 (2002-05-01), Ko-Chien

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