Paper sheet identifying and checking apparatus
a paper sheet identification and checking apparatus technology, applied in the direction of atm accessories, thin material handling, instruments, etc., can solve the problems of reducing the accuracy of the position detection and the gradient of paper sheets, increasing the cost of the bill identification and checking device, and reducing the accuracy of the detection of the position and the gradient, etc., to prevent the deterioration of the identification performance, improve the identification performance, and improve the scanning frequency
Inactive Publication Date: 2007-12-06
HITACHI OMRON TERMINAL SOLUTIONS CORP
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Benefits of technology
"The present invention provides a paper sheet identifying and checking apparatus that can detect the gradient of a paper sheet with precision even when the gradient is almost zero. This is achieved by arranging sensor elements on the conveying path in a string in a conveying width direction indicating a direction of width of the conveying path, and using an identifying module to identify the paper sheet on the basis of image data produced by the line sensor. This helps to prevent deterioration in identifying performance due to the error in detecting the gradient of the paper sheet. Additionally, the apparatus can increase the scanning frequency by shortening the period of conveyance pulses, without requiring higher-speed optical line sensors, larger-capacity frame memory, and higher-performance image processing modules. This helps to keep the cost of the device unchanged."
Problems solved by technology
However, in the device of this type, if the gradient of the paper sheet being conveyed is almost zero, precision in the detection of the position and the gradient of the paper sheet is lowered due to influence of a quantization error.
In this case, there is obtained one and the same result regardless of the position of the paper sheet between the conveyance pulses, leading to a maximum error of 0.5 mm.
Therefore, the cost of the bill identifying and checking device soars.
Method used
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[0018] Referring now to the drawings, description will be given of an embodiment of the present invention.
[0019] The embodiment relates to a bill identifying and checking apparatus for conveying a bill as a paper sheet and identifying the bill. “Identifying the bill” indicates to determine the kind of bill, for example, a new thousand-yen bill, an old thousand-yen bill, or a two-thousand-yen bill in Japan and to determine whether the bill is an authorized bill or a counterfeit bill. The term “bill” implies the authorized and counterfeit bills. The bill identifying and checking apparatus is incorporated in, for example, an Automatic Teller's Machine (ATM) of a financial section of a bank to identify bills.
[0020] First, an outline of the bill identifying and checking apparatus will be described by referring to the perspective view of the bill identifying and checking apparatus 1 shown in FIG. 1 and the plan view of the lower unit 4 of the apparatus 1 shown in FIG. 2.
[0021] The bill...
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In a paper sheet identifying and checking apparatus including a conveying path to convey a bill, a line sensor including a plurality of light sensor elements arranged on the conveying path in a string in a conveying width direction, and an identifying module to identify the paper sheet on the basis of a binary image produced by the line sensor by reading the paper sheet, the direction of arranging the sensor elements is inclined with respect to the conveying width direction of the conveying path.
Description
INCORPORATION BY REFERENCE [0001] The present application claims priority from Japanese application JP2006-154863 filed on Jun. 2, 2006, the content of which is hereby incorporated by reference into this application. BACKGROUND OF THE INVENTION [0002] The present invention relates to a paper sheet identifying and checking apparatus for identifying a paper sheet, for example, a paper money (banknote) or a bill conveyed thereto, and in particular, to a paper sheet identifying and checking apparatus for producing image data of a paper sheet by use of an optical line sensor and identifying a kind and truth or falsehood of the paper sheet on the basis of the image data. [0003] Heretofore, the bill identifying and checking device of the prior art includes an optical sensor to detect a position of a passage of a paper sheet and gradient or inclination thereof relative to a direction to convey the paper sheet. The bill identifying and checking device detects the position of the passage of t...
Claims
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IPC IPC(8): B65H7/02G07D7/00G07D7/0047G07D7/12G07D7/16
CPCG07D7/168G07D7/12G07D7/17G07D11/22G07D11/225G07F19/201G07D2207/00G07D2211/00
Inventor MATSUOKA, TAKESHITAKADA, YOSHIHIRO
Owner HITACHI OMRON TERMINAL SOLUTIONS CORP