Scanner which takes samples from different positions of a docume

Details Scanner which takes samples from different positions of a docume Scanner which takes samples from different positions of a docume

1998-04-17

2000-11-14

Lee, Cheukfan

Facsimile and static presentation processing

Facsimile

Picture signal generator

358488, 358483, H04N 104

Patent

active

06147780&

ABSTRACT:
A scanning device which will take samples from different positions to increase its resolution. The scanning device comprises a housing, a scanning module, and a driving device. The housing comprises a transparent platform installed on its top for placing a document. The scanning module is installed inside the housing and is slidable along a front-and-rear direction for scanning the document. The scanning module comprises a carrier, a sensor, and a positioning device for fixing the sensor inside the carrier. The sensor is installed within the carrier, is slidable along a left-right direction and comprises a plurality of linearly arranged sensing units for taking samples from the scanned document. A driving device is used for driving the scanning module forward and backward to scan the document. When the scanning module scans the document along the front-and-rear direction, the positioning device can fix the set of sensing units of the sensor at non-repeating sampling positions inside the carrier to increase the resolution of the sensor.

REFERENCES:
patent: 5335091 (1994-08-01), Palum
patent: 5396142 (1995-03-01), Koblanski
patent: 5432622 (1995-07-01), Johnston et al.
patent: 5786901 (1998-07-01), Okada et al.
patent: 5798875 (1998-08-01), Fortin et al.

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