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    Laser power control arrangements in electro-optical readers
    1.
    发明申请
    Laser power control arrangements in electro-optical readers 有权
    电光读取器中的激光功率控制装置

    公开(公告)号：US20070133633A1

    公开(公告)日：2007-06-14

    申请号：US11239745

    申请日：2005-09-30

    申请人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary Schneider ,  Matthew Blasczak ,  Mark Weitzner ,  Edward Barkan

    发明人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary Schneider ,  Matthew Blasczak ,  Mark Weitzner ,  Edward Barkan

    IPC分类号： H01S3/13 ,  H01S3/00

    CPC分类号： H01S5/0014 ,  G06K7/10851 ,  H01S5/0617 ,  H01S5/06808 ,  H01S5/06825 ,  H01S5/0683

    摘要： 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.

    摘要翻译： 激光功率控制装置在检测到不符合预先制定的监管标准的过功率状况时，会中断电光读取器中使用的激光的电源。 在一个实施例中，在操作模式期间，将两个操作点处的激光驱动电流之间的差与在校准模式期间相同的两个操作点处的激光驱动电流之间的差异进行比较。 当在操作模式期间的差超过校准模式期间的差异预定量时，识别过功率状况。 在另一个实施例中，激光器仅被激励以在远低于监管标准的降低功率水平下发射光束，以便即使电动机驱动器失效也可以凝视。

    Laser power control arrangements in electro-optical readers
    3.
    发明授权
    Laser power control arrangements in electro-optical readers 有权
    电光读取器中的激光功率控制装置

    公开(公告)号：US07609736B2

    公开(公告)日：2009-10-27

    申请号：US11239745

    申请日：2005-09-30

    申请人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    发明人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    IPC分类号： H01S3/00

    CPC分类号： H01S5/0014 ,  G06K7/10851 ,  H01S5/0617 ,  H01S5/06808 ,  H01S5/06825 ,  H01S5/0683

    摘要： 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.

    摘要翻译： 激光功率控制装置在检测到不符合预先制定的监管标准的过功率状况时，会中断电光读取器中使用的激光的电源。 在一个实施例中，在操作模式期间，将两个操作点处的激光驱动电流之间的差与在校准模式期间相同的两个操作点处的激光驱动电流之间的差异进行比较。 当在操作模式期间的差超过校准模式期间的差异预定量时，识别过功率状况。 在另一个实施例中，激光器仅被激励以在远低于监管标准的降低功率水平下发射光束，以便即使电动机驱动器失效也可以凝视。

    LASER POWER CONTROL ARRANGEMENTS IN ELECTRO-OPTICAL READERS
    4.
    发明申请
    LASER POWER CONTROL ARRANGEMENTS IN ELECTRO-OPTICAL READERS 审中-公开
    电光读取器中的激光功率控制装置

    公开(公告)号：US20100074286A1

    公开(公告)日：2010-03-25

    申请号：US12561341

    申请日：2009-09-17

    申请人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    发明人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    IPC分类号： H01S3/00

    CPC分类号： H01S5/0014 ,  G06K7/10851 ,  H01S5/0617 ,  H01S5/06808 ,  H01S5/06825 ,  H01S5/0683

    摘要： 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.

    摘要翻译： 激光功率控制装置在检测到不符合预先制定的监管标准的过功率状况时，会中断电光读取器中使用的激光的电源。 在一个实施例中，在操作模式期间，将两个操作点处的激光驱动电流之间的差与在校准模式期间相同的两个操作点处的激光驱动电流之间的差异进行比较。 当在操作模式期间的差超过校准模式期间的差异预定量时，识别过功率状况。 在另一个实施例中，激光器仅被激励以在远低于监管标准的降低功率水平下发射光束，以便即使电动机驱动器失效也可以凝视。

    Gain control system and method for use in electro-optical readers
    8.
    发明申请
    Gain control system and method for use in electro-optical readers 有权
    增益控制系统和电光读取器的使用方法

    公开(公告)号：US20050236485A1

    公开(公告)日：2005-10-27

    申请号：US10832486

    申请日：2004-04-26

    申请人： Dayou Wang ,  Matthew Blasczak ,  Edward Barkan ,  Vladimir Gurevich ,  Pierre Craen

    发明人： Dayou Wang ,  Matthew Blasczak ,  Edward Barkan ,  Vladimir Gurevich ,  Pierre Craen

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10851

    摘要： An intelligent gain selection circuit replaces the gain set by an automatic gain control circuit in an electro-optical reader for reading indicia, such as bar code symbols, with a larger gain where specular reflections, high contrast edges, or other noise operative to produce dominant high voltage peaks in an analog signal generated by a sensor in the reader, are detected.

    摘要翻译： 智能增益选择电路取代由电光读取器中的自动增益控制电路设置的增益，用于读取标记，例如条形码符号，具有更大的增益，其中镜面反射，高对比度边缘或其他噪声可以产生主导 检测由读取器中的传感器产生的模拟信号中的高电压峰值。

    Arrangement for and method of regulating laser output power in electro-optical readers
    9.
    发明授权
    Arrangement for and method of regulating laser output power in electro-optical readers 有权
    电光读取器中激光输出功率的调整和调节方法

    公开(公告)号：US08733659B2

    公开(公告)日：2014-05-27

    申请号：US12870040

    申请日：2010-08-27

    申请人： James Giebel ,  Matthew Blasczak ,  Peter Fazekas ,  Mark Weitzner

    发明人： James Giebel ,  Matthew Blasczak ,  Peter Fazekas ,  Mark Weitzner

    IPC分类号： G02B26/10

    CPC分类号： G06K7/10584

    摘要： In an electro-optical reader, an aiming or a scanning laser has a laser chip and a monitor photodiode. Output power of a laser beam emitted by the laser is regulated by a feedback circuit for maintaining substantially constant the laser beam output power during normal operation, a disabling circuit for disabling the feedback circuit, a drive circuit for driving the chip with a drive current when the feedback circuit is disabled, and for concomitantly generating a photodiode output voltage, a current modification circuit for modifying the drive current by a predetermined current with a concomitant change in the photodiode output voltage when the feedback circuit is disabled, and a control circuit for monitoring the change in the photodiode output voltage, for determining whether the change in the photodiode output voltage is sufficient to indicate an over-power condition, and for interrupting power to the chip when the over-power condition is indicated.

    摘要翻译： 在电光读取器中，瞄准或扫描激光器具有激光芯片和监视器光电二极管。 由激光器发射的激光束的输出功率由反馈电路调节，用于在正常操作期间保持激光束输出功率基本上恒定，用于禁用反馈电路的禁用电路，用于以驱动电流驱动芯片的驱动电路， 反馈电路被禁止，并且用于同时产生光电二极管的输出电压，用于当反馈电路被禁用时用光源输出电压的伴随变化来修改驱动电流预定电流的电流修改电路，以及用于监视的反馈电路的控制电路 光电二极管输出电压的变化，用于确定光电二极管输出电压的变化是否足以指示过功率状态，以及当指示过功率状态时中断芯片的电源。