Optical bar code reader
Scanning system with adjustable light output and/or scanning angle
Method and apparatus for discriminating or locating bar codes for an optical mark reader
Variable-sweep bar code reader
Scan pattern generators for bar code symbol readers Patent #: 5168149
ApplicationNo. 542517 filed on 10/13/1995
US Classes:235/462.1, Means to decode a 2-D bar code235/462.092-D bar code
ExaminersPrimary: Shepperd, John W.
Foreign Patent References
International ClassG06K 007/10
AbstractA system for reading bar code symbols or the like, having a scanner for generating a laser beam directed toward a target and producing a first narrowly spaced apart dual line scanning pattern that enables the user to manually aim and direct the beam to the location desired by the user and a relatively wider spaced apart dual line second scanning pattern that sweeps an entire symbol to be read, and a detector for receiving reflected light from such symbol to produce electrical signals corresponding to data represented by such symbol.