Recording media processing device, control method of a recording media processing device, and storage medium for recognizing magnetic ink characters

摘要

The recognition rate is improved and recognition errors are suppressed when recognizing magnetic ink characters. A character recognition unit 80 calculates the difference between the reference waveform data of each character in a character set and the character waveform data of a read magnetic ink character 101, and defines the characters with the smallest differences to the read character as first and second candidate characters. If scaling the reference waveforms of the first and second candidate characters creates waveforms that are similar with a smaller difference therebetween than before scaling, and the ratio between the difference B between the waveform of the second candidate and the read character, and the difference A between the waveform of the first candidate and the read character, is greater than or equal to a specific value, the character recognition unit scales and adjusts the reference waveforms to recognize the magnetic ink character 101.

主权项

1. A recording media processing device comprising:
a magnetic reading unit that magnetically reads a magnetic ink character recorded on a recording medium; and a character recognition unit that recognizes the read magnetic ink character based on comparing character waveform data acquired by the magnetic reading unit reading the magnetic ink character with reference waveform data for magnetic ink characters, the character recognition unit calculating a difference between the character waveform data and the reference waveform data for each magnetic ink character, defining a first one of the character characters with the smallest difference as a the first candidate character of the read magnetic ink character, and defining a second one of the character characters with the next-smallest difference as a the second candidate character of the read magnetic ink character, and scaling and adjusting the waveform of the reference waveform data for the first candidate character and the waveform of reference waveform data for the second candidate character, and recognizing the read magnetic ink character based on the difference between the reference waveform data of the adjusted candidate characters and the character waveform data, wherein the scaling is performed when the first candidate character is one of the number 2 and number 5 and the second candidate character is another of the number 2 and number 5, or the first candidate character is one of the number 4 and the transit symbol T and the second candidate character is another of the number 4 and transit symbol T, and when the ratio of the difference between the reference waveform data of the second candidate character and the character waveform data, to the difference between the reference waveform data of the first candidate character and the character waveform data, is greater than or equal to a specific value.