Scanning system with array of laser scanner modules to produce c

Details Scanning system with array of laser scanner modules to produce c Scanning system with array of laser scanner modules to produce c

1989-02-06

1991-05-28

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

235467, G06K 714

Patent

active

050197142

ABSTRACT:
A laser scanner system for producing and projecting a multi-line scanning pattern into a space in which a bar code is to be brought. The system includes plural modular laser scanners, each producing a line scan pattern, but mounted with respect to one another so that the pattern of each scanner is projected into the space to conjoin to form the multi-line pattern. Each module is arranged to receive light reflected off the object to convert that light into electrical output signals indicative of the bars and spaces of the code. The system also include means for decoding the output signals and for providing the decoded signals to some peripheral device, e.g., an electronic cash register or computer. In one embodiment the scanner is located adjacent a conveyor carrying bar coded items to form an automated check-out counter.

REFERENCES:
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patent: 3928759 (1975-12-01), Sansone
patent: 3988573 (1976-10-01), Hayosh et al.
patent: 3995166 (1976-11-01), Hobart et al.
patent: 4006343 (1977-02-01), Izura et al.
patent: 4093865 (1978-06-01), Nickl
patent: 4097729 (1978-06-01), Seligman et al.
patent: 4122525 (1978-10-01), Eaton
patent: 4713532 (1987-12-01), Knowles

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