Registers – Coded record sensors – Particular sensor structure
Patent
1989-12-27
1991-06-25
Levy, Stuart S.
Registers
Coded record sensors
Particular sensor structure
382 7, 382 29, G06K 918
Patent
active
050269747
ABSTRACT:
A method for locating the start of a MICR character in E13B font so as to facilitate character recognition. A Calculated Character Start Position (CCSP) is generated by using a predetermined number of voltage samples corresponding to a portion of MICR waveform generated by reading a MICR character on a document. The CCSP is generated by averaging the predetermined number of voltage samples within the window which tends to minimize the harmful effects of noise. Noise from magnetic ink spatter is sometimes wrongly interpreted as the start of a character. A process of "jiggling" is used to assist character recognition techniques by utilizing different character start positions to determine whether or not a template match in character recognition techniques occurs when the new or different character start position is used. Dynamic thresholding is used to avoid false starts or "ringing" due to an immediately previous character which was read having a high intensity waveform compared to the normal intensity expected. The method also employs a technique of having a variable starting point for the search for the start of the next character, with the variable starting point being based on the character just recognized.
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Franklin Gene R.
Ho Benedict C. M.
duBois Steven M.
Hawk Jr. Wilbert
Levy Stuart S.
NCR Corporation
Sessler Jr. Albert L.
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