Registers – Coded record sensors – Particular sensor structure
Patent
1992-01-24
1993-02-02
McGraw, Vincent P.
Registers
Coded record sensors
Particular sensor structure
235494, 434363, G06K 714, G09B 700
Patent
active
051840030
ABSTRACT:
A scannable form for use in an optical mark reading system has a timing track that is pre-encoded with data information known or determined prior to a respondent completing the scannable form. The data information is pre-encoded in the control mark column on the scannable form by utilizing that portion of the control mark column that is not essential for conveying the scan control information associated with the scan control marks. The data information is encoded using data marks that represent the data information in a binary or other similar coding technique. The data marks are column-aligned with the scan control marks in the control mark column.
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Clark Jay V.
McMillin John V.
McGraw Vincent P.
National Computer Systems, Inc.
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