Registers – Coded record sensors – Synchronization
Patent
1976-10-27
1978-12-19
Kilgore, Robert M.
Registers
Coded record sensors
Synchronization
235466, 235479, G06K 7016, G06K 1304, G06K 710
Patent
active
041307569
ABSTRACT:
A reader for badges having rows of data representative holes therethrough, the reader including a row of data reading photo-sensitive devices or the like for sensing light passing through a row of the badge holes, a stationary encoder bar having two rows of holes therethrough and a carriage movable with the badge as it is moved across the row of data reading devices for reading the holes in the badge and carrying a pair of control photo-sensitive devices for sensing light passing through the holes of the encoder bar. The holes in the two rows in the encoder bar are slightly staggered with respect to each other so as to provide main composite states in which the two control photo-sensitive devices are either both activated or inactivated and transition states in which just one of the two control photo-sensitive devices is activated, and means are provided responsive to the transition states for reading the data representative holes in the badge at the time of occurence of the transition states during movement of the badge and carriage.
REFERENCES:
patent: 3238357 (1966-03-01), Minka
patent: 3419710 (1968-12-01), Mathews
patent: 3480762 (1969-11-01), Del Vecchio
patent: 3496342 (1970-02-01), Milford
patent: 3553435 (1971-01-01), Pike
patent: 3793508 (1974-02-01), Maggi
patent: 3858032 (1974-12-01), Scantlin
patent: 3976857 (1976-08-01), Hogberg
Arndt Richard L.
Meyerhofer, Jr. Wilfred L.
Steinbauer David M.
Bleuer Keith T.
International Business Machines - Corporation
Kilgore Robert M.
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