Speed compensation scheme for reading MICR data

Details Speed compensation scheme for reading MICR data Speed compensation scheme for reading MICR data

1987-11-16

1988-10-04

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 11, 235474, G06K 918

Patent

active

047760214

ABSTRACT:
A method and apparatus for providing a speed compensation scheme for reading MICR data on a document. The magnetic waveform for a character is sampled at periodic rates and converted to first bytes of data which are placed in a first memory. The velocity of the document is sampled at second periodic rates and the instantaneous values of the speed of the document are placed in a second memory as second bytes of data. A processor is used to remove the second bytes of data from memory and to calculate an average speed of the document for an associated examining window consisting of a predetermined number of the first bytes of data. The width of the examining window is adjusted in accordance with the average speed compared to an anticipated normal speed.

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patent: 4143356 (1979-03-01), Nally
patent: 4148010 (1979-04-01), Shiau
patent: 4547899 (1985-10-01), Nally et al.
patent: 4679744 (1987-07-01), Chikamasa et al.

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