Bar code, as well as process and apparatus for reading the same

Details Bar code, as well as process and apparatus for reading the same Bar code, as well as process and apparatus for reading the same

1992-11-16

1995-07-04

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235493, G06K 708

Patent

active

054302781

ABSTRACT:
A process in which by a bar code formed by bars are gaps located between them with different electromagnetic characteristics, an electromagnetic alternating field is produced and a measuring field variable by the bar code is detected. At lease one sensor is provided with a sensor core, an exciting coil subject to high frequency located thereon and in each case at least one sensor coil closely adjacent to the exciting coil. The bar code is formed by electrically conductive material bars placed on a carrier with gaps.

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patent: 3358124 (1967-12-01), Smith et al.
patent: 3613101 (1971-10-01), Leonard et al.
patent: 3860796 (1975-01-01), Wallace et al.
patent: 4130242 (1978-12-01), Mannion
patent: 4146781 (1979-03-01), Machate
patent: 4218612 (1980-08-01), Krehl et al.
patent: 4281242 (1981-07-01), Mannion
patent: 4303951 (1981-12-01), Hack
patent: 4314289 (1982-02-01), Haynes

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