Method for driving a scanning system with a reference pattern

Details Method for driving a scanning system with a reference pattern Method for driving a scanning system with a reference pattern

1997-04-03

1998-07-28

Le, Que

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

2505594, 358498, H01J 4014

Patent

active

057865906

ABSTRACT:
A document holder is fed into a cassette scanning system. A sensor that is set in the cassette scanning system detects whether the document holder is in the scanning system or not. The scanning system is responsive to the sensor to drive the image sensor to a predetermined position where is exactly over a reference pattern. The reference is formed in the document holder. Next, the image sensor starts to detect whether the document is in the document holder or not. The scanning system is responsive to the signal to drive the image sensor for capturing the image of the document.

REFERENCES:
patent: 4958069 (1990-09-01), Okamori

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