Data reader

Details Data reader Data reader

1983-10-24

1986-03-25

Trafton, David L.

Registers

Coded record sensors

Readout control

235449, 235462, 307358, G06K 700

Patent

active

045785686

ABSTRACT:
A data reader has a data reading means for reading data from a recording medium and producing an analog signal. The data reader also has a switching circuit having one terminal connected to the output terminal of the reading means. When the potential difference across the two terminals of the switching circuit falls within a predetermined range, the switching element is turned off. The switching element is turned on when the potential difference falls outside the predetermined range. The reader further has a hold circuit connected to the switching circuit and for holding a potential applied thereto. The reader also has a comparator which compares the analog signal from the data reading means with the potential held by the hold circuit and which produces a digital signal.

REFERENCES:
patent: 3708678 (1973-01-01), Kreda
patent: 3942038 (1976-03-01), Hutch
patent: 4058705 (1977-11-01), Cannon

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