发明名称 |
Laser power control arrangements in electro-optic readers |
摘要 |
<p>Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished regulatory standards. In one embodiment, during an operational mode, a difference between laser drive currents at two operating points is compared to a difference between laser drive currents at the same two operating points during a calibration mode. The over-power condition is recognized when the difference during the operational mode exceeds the difference during the calibration mode by a predetermined amount. In another embodiment, the laser is only energized to emit the beam at a reduced power level well below regulatory standards for staring at even if a motor drive failed.</p> |
申请公布号 |
EP1929596(B1) |
申请公布日期 |
2014.12.24 |
申请号 |
EP20060790115 |
申请日期 |
2006.08.31 |
申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
DIFAZIO, COSTANZO |
分类号 |
G06K7/10;H01S5/06;H01S5/0683 |
主分类号 |
G06K7/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|