Bar code scanner utilizing multiple light beams output by a ligh

Details Bar code scanner utilizing multiple light beams output by a ligh Bar code scanner utilizing multiple light beams output by a ligh

1995-06-02

1998-01-27

Le, Hoanganh T.

Registers

Coded record sensors

Particular sensor structure

235472, G06K 710

Patent

active

057124701

ABSTRACT:
A bar code scanner and method for scanning a bar code symbol that splits a light beam using a liquid crystal device and directs the split light beams toward a bar code symbol using a moveable mirror. The light reflected by the symbol from each of the split light beams is added summed and converted to an electrical signal indicative of the bar code symbol. The electrical signal is processed to decode the bar code symbol and, if the decoding is unsucessful, the liquid crystal device is changed to affect the number of split light beams incident on the bar code symbol.

REFERENCES:
patent: 3812325 (1974-05-01), Schmidt
patent: 3819910 (1974-06-01), Scantlin
patent: 3928759 (1975-12-01), Sansone
patent: 3946205 (1976-03-01), Melugin et al.
patent: 4040740 (1977-08-01), Handtmam et al.
patent: 4057784 (1977-11-01), Tafoya
patent: 4135663 (1979-01-01), Nojiri et al.
patent: 4195772 (1980-04-01), Nishimura
patent: 4217487 (1980-08-01), Kjeer
patent: 4251798 (1981-02-01), Swartz et al.
patent: 4315245 (1982-02-01), Nakahara et al.
patent: 4369361 (1983-01-01), Swartz et al.
patent: 4387297 (1983-06-01), Swartz et al.
patent: 4409470 (1983-10-01), Shepard et al.
patent: 4460120 (1984-07-01), Shepard et al.
patent: 4473746 (1984-09-01), Edmonds
patent: 4481667 (1984-11-01), Price et al.
patent: 4496831 (1985-01-01), Swartz et al.
patent: 4548463 (1985-10-01), Cato et al.
patent: 4591242 (1986-05-01), Broockman et al.
patent: 4593186 (1986-06-01), Swartz et al.
patent: 4605846 (1986-08-01), Duret et al.
patent: 4629876 (1986-12-01), Kubota et al.
patent: 4673805 (1987-06-01), Shepard et al.
patent: 4698797 (1987-10-01), Komatsu
patent: 4734566 (1988-03-01), Senda et al.
patent: 4736095 (1988-04-01), Shepard et al.
patent: 4743773 (1988-05-01), Katana et al.
patent: 4758717 (1988-07-01), Shepard et al.
patent: 4760248 (1988-07-01), Swartz et al.
patent: 4806742 (1989-02-01), Swartz et al.
patent: 4813034 (1989-03-01), Mashimo
patent: 4818856 (1989-04-01), Matsushima et al.
patent: 4897532 (1990-01-01), Swartz et al.
patent: 4900907 (1990-02-01), Matsushima et al.
patent: 4933538 (1990-06-01), Heiman et al.
patent: 5028776 (1991-07-01), Miyazaki et al.
patent: 5073702 (1991-12-01), Schuhmacher
Fujimoto et al., "Semiconductor Laser Digital Scanner", Mar. 1990, Optical Engineering, vol. 29, pp. 230-232.
Dickson et al., Scanner With Tandem Stationary Holographic Disc, (Jan. 1981).
Sekii et al., "Semiconductor Laser Digital Scanner", SPIE Proceedings vol. 1028, Conf. on Scanning Image, Sep. 21-23, 1988.

Affiliated with

Also associated with

Rating

Bar code scanner utilizing multiple light beams output by a ligh does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bar code scanner utilizing multiple light beams output by a ligh, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bar code scanner utilizing multiple light beams output by a ligh will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-344332