G - Physics – 08 – B
Patent
G - Physics
08
B
270/26, 340/123.
G08B 21/00 (2006.01) G06K 13/067 (2006.01)
Patent
CA 1144258
METHOD AND APPARATUS FOR DETECTING THE MULTIPLE FEEDING OF DOCUMENTS Abstract of the Disclosure A method and apparatus for detecting a multiple-feed situation with regard to documents having encoding arranged thereon in a predetermined manner and with the documents being moved along a transport path. In a preferred embodiment of the invention, the documents are encoded with magnetic ink. A sensing member is positioned along the trans- port path in operative relationship with the encoding on the documents for generating a first signal in response to a character of the encoding being in moving relationship with the sensing means. A first circuit is used for receiving the first signal and for generating a first time frame. A second circuit is used for generating a second time frame beginning upon the expiration of the first time frame; and a third circuit is used for generating an output signal in- dicative of a multiple-feed situation when a subse- quent signal from the sensing means occurs during the second time frame.
356747
Ncr Canada Ltd. - Ncr Canada Ltee
Smart & Biggar
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