Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reissue Patent
2009-03-26
2011-10-04
Le, Que T (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S208100, C250S235000, C358S505000, C358S513000, C358S482000
Reissue Patent
active
RE042774
ABSTRACT:
A single step multi-section exposure scanning method for a scanner. The scanner includes a photo-sensor and a stepper motor. The photo-sensor has N rows of sensor cells that correspond to each primary color. The scanning device is driven forward an exposure distance for each revolution of the stepper motor. The single step multi-section exposure scanning method includes the following steps. First, the photo-sensor moves forward one exposure distance. One row of sensor cells is exposed after moving every 1/Nth of the exposure distance. Thereafter, analogue voltages obtained through the exposed row of sensor cells are transmitted to an analogue/digital converter. The above process is repeated until the entire document is scanned.
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Chang Tom-Chin
Liu Rong-Ji
Wang Kuo-Jeng
Le Que T
Stolowitz Ford Cowger LLP
Transpacific Systems, LLC
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