Dual sensor decoder

Details Dual sensor decoder Dual sensor decoder

1996-02-08

1998-04-07

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235462, 235493, G06K 708

Patent

active

057367221

ABSTRACT:
A medium having an information pattern encoded as changes in two values of a medium characteristic, including start and end key patterns which have characteristic value changes spaced a fixed distance apart, and including intermediate characteristic value changes, which, with the key patterns, encode information.
Two sensors are spaced from each other the fixed distance for sensing the medium characteristic value changes as the medium and the sensors are moved relatively to each other, and for producing signals representative thereof.
Circuitry for processing the signals from the sensors to produce an information signal is provided.

REFERENCES:
patent: 3663803 (1972-05-01), Mohan et al.
patent: 4647766 (1987-03-01), Dimur et al.
patent: 5054092 (1991-10-01), LaCaze
patent: 5096038 (1992-03-01), Potter et al.
patent: 5122645 (1992-06-01), Saeki et al.
patent: 5268562 (1993-12-01), Lazardis

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