Magnetic character reader with double document detection

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United States of America Patent

PATENT NO 4510615
SERIAL NO

06335482

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Abstract

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A multi-gap magnetic character reader is provided with the ability to automatically detect double documents. Where only weak signals are sensed, all signals are combined and compared to a reference. Where the weak signals are due to a piggyback document, the combined signals will be large with respect to the reference. Multiple documents thus detected are directed to a special reject bin.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL BUSINESS MACHINES CORPORATION A CORP OF NYARMONK NY 10504

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rohrer, Gene D Concord, NC 11 738

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