发明名称 |
Method and apparatus for detecting the multiple feeding of documents |
摘要 |
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 transport 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 indicative of a multiple-feed situation when a subsequent signal from the sensing means occurs during the second time frame.
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申请公布号 |
US4243983(A) |
申请公布日期 |
1981.01.06 |
申请号 |
US19790065384 |
申请日期 |
1979.08.09 |
申请人 |
NCR CANADA LTD. - NCR CANADA LTEE |
发明人 |
VYAS, ARVIND C. |
分类号 |
G06M7/06;G06K13/067;(IPC1-7):G08B21/00;B65H7/12 |
主分类号 |
G06M7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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