Registers – Coded record sensors – Particular sensor structure
Patent
1995-06-06
1997-09-16
Hajec, Donald T.
Registers
Coded record sensors
Particular sensor structure
235462, 310 20, 310 36, 359213, G06K 710
Patent
active
056683626
ABSTRACT:
A scanning device for projecting a light beam against a target having information contained thereon which is to be scanned by the light beam; and in particular relates to a compact laser scanning device, such as a bar code projecting a laser beam, and which device incorporates a drive component such as a scanning motor for oscillating a scanning element or mirror at a high rate of speed within a specified angular range so as to cause the light or laser beam which impinges against the information on the target to be rapidly swept across the information in a scanning sequence. In particular, the structure is directed to improving the linearity of the oscillatory or "dithering" motion imparted by the scanning motor to the scanning element or mirror. Also contemplated is a novel method of utilizing the "dithering" or oscillating motion of the scanning motor for effectuating an improvement in the quality of the scan by the scanning device.
REFERENCES:
patent: 3532408 (1970-10-01), Dostal
patent: 3644763 (1972-02-01), Skrobisch
patent: 5059779 (1991-10-01), Krichever et al.
patent: 5280377 (1994-01-01), Chandler et al.
patent: 5281801 (1994-01-01), Shepard et al.
Filipek Jeffrey R.
GEO Labs, Inc.
Hajec Donald T.
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