Scan pattern generators for bar code symbol readers

Details Scan pattern generators for bar code symbol readers Scan pattern generators for bar code symbol readers

1986-12-22

1989-03-28

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235455, G06K 710

Patent

active

048166618

ABSTRACT:
Multiple scan line pattern generators including bidirectional scan patterns of mutually parallel scan lines, and scan patterns composed of intersecting lines, are superimposed over bar code symbols to be read. At least one of the scan lines is automatically moved closer to and further away from a reader to perform a zooming function to read far-out and close-in symbols.

REFERENCES:
patent: 3629827 (1971-12-01), Johnston
patent: 3889102 (1975-06-01), Dahlquist
patent: 3970825 (1976-07-01), Plocki
patent: 4006343 (1977-02-01), Izura
patent: 4333006 (1982-06-01), Gorin et al.
patent: 4560862 (1985-12-01), Eastman et al.
patent: 4673805 (1987-06-01), Shephard

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