Laser-beam bar code reader
USRE37017E · kind E · reissue
4Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC —)General
Abstract
Bar code reader including two sources which are enabled to emit respective laser beams with a cyclic alternation; the laser beams are focused by optical elements on two different regions of a read area. Reflected rays from the read area are processed by a decoding unit operatively connected to the laser-beam sources so that when the presence of a code in the read area is detected, only the laser beam which is focused on the region in which the bar code is present remains enabled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.