Scan pattern generator convertible between multiple and single line patterns
First Claim
Patent Images
1. An arrangement for electro-optically reading indicia, comprising:
- a) an energizable light source for emitting a light beam when energized;
b) a pattern generator for moving the light beam in a multiple line, scan pattern across an indicium during a scan period in a first mode of operation; and
c) a controller for converting the multiple line, scan pattern to a single scan line by intermittently operating and energizing the light source to emit the light beam for a working time period which is less than, and a fraction of, the scan period to cause the pattern generator to generate the single scan line across the indicium in a second mode of operation.
2 Assignments
0 Petitions
Accused Products
Abstract
An arrangement for and a method of reading bar code symbols on a target to move a light beam emitted by a light source in a multiple line, scan pattern during a scan period in a first operational mode. Upon selection of a second operational mode by a user, a controller intermittently operates and energizes the light source to emit the light beam for a working time period which is less than, and a fraction of, the scan period to generate a single scan line across the symbol.
69 Citations
20 Claims
-
1. An arrangement for electro-optically reading indicia, comprising:
-
a) an energizable light source for emitting a light beam when energized;
b) a pattern generator for moving the light beam in a multiple line, scan pattern across an indicium during a scan period in a first mode of operation; and
c) a controller for converting the multiple line, scan pattern to a single scan line by intermittently operating and energizing the light source to emit the light beam for a working time period which is less than, and a fraction of, the scan period to cause the pattern generator to generate the single scan line across the indicium in a second mode of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. An arrangement for electro-optically reading bar code symbols, comprising:
-
a) a housing having a handle for hand-held use;
b) an energizable laser in the housing for emitting a laser beam when energized;
c) a pattern generator in the housing, for moving the laser beam in an omnidirectional scan pattern comprised of a plurality of intersecting sets of a plurality of scan lines across a symbol during a scan period in a first mode of operation;
d) a controller in the housing for converting the plurality of scan lines to a single scan line by intermittently operating and energizing the laser to emit the laser beam for a working time period which is less than, and a fraction of, the scan period to cause the pattern generator to generate the single scan line across the symbol in a second mode of operation; and
e) a mode selector for enabling a user to change the mode of operation of the pattern generator. - View Dependent Claims (16)
-
-
17. A method of electro-optically reading indicia, comprising the steps of:
-
a) emitting a light beam from a light source;
b) moving the light beam in a multiple line, scan pattern across an indicium during a scan period in a first mode of operation; and
c) converting the multiple line, scan pattern to a single scan line by intermittently operating and energizing the light source to emit the light beam for a working time period which is less than, and a fraction of, the scan period to generate the single scan line across the indicium in a second mode of operation. - View Dependent Claims (18, 19, 20)
-
Specification