System and method for reading marks on a document

Details System and method for reading marks on a document System and method for reading marks on a document

1982-08-10

1984-10-23

Springborn, Harvey E.

Boots, shoes, and leggings

235386, G06F 712, G06K 300, G07C 1300

Patent

active

044791941

ABSTRACT:
A microprocessor based mark-sense ballot card reading system has automatic mark detection threshold adjustment, automatic skew and card speed correction, and provision for simultaneous, accurate reading of both sides of a ballot card regardless of card input orientation. A multidispatch, miltipage real time control program is utilized to enable multiple event detection on each card side and asynchronous processing of such multiple events on a two-sided card. Positive document sensing and control are monitored by the microprocessor control system. A folded card path card transport mechanism with diverter stations operates under microprocessor control to determine card destination.

REFERENCES:
patent: 3218439 (1965-11-01), Holzer et al.
patent: 3582660 (1971-06-01), Muller-Saala
patent: 3648022 (1972-03-01), Cook
patent: 3673389 (1972-06-01), Kapsambells
patent: 3983364 (1976-09-01), Firehammer et al.
patent: 4021780 (1977-05-01), Narey et al.

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