-
公开(公告)号：US20050007905A1
公开(公告)日：2005-01-13
申请号：US10759227
申请日：2004-01-20
申请人： Young-Pyo Lee , Cheol-sung Yeon , Hee-dong Kim , Hong-kyu Lee
发明人： Young-Pyo Lee , Cheol-sung Yeon , Hee-dong Kim , Hong-kyu Lee
CPC分类号： G11B7/13 , G11B7/1263
摘要： An optical pickup used to record information on and/or reproduce information from an optical recording medium, the optical pickup including an optical module to emit a light beam; and a front photo-detector to monitor power of the light beam; wherein the optical module is coupled to the front photo-detector so that a fixed distance is maintained between the optical module and the front photo-detector.
摘要翻译： 一种用于在光学记录介质上记录信息和/或再现信息的光学拾取器，该光学拾取器包括用于发射光束的光学模块; 以及用于监视光束功率的前光检测器; 其中所述光学模块耦合到所述前光电检测器，使得在所述光学模块和所述前光电检测器之间保持固定的距离。
-
公开(公告)号：US07417934B2
公开(公告)日：2008-08-26
申请号：US10759227
申请日：2004-01-20
申请人： Young-pyo Lee , Cheol-sung Yeon , Hee-dong Kim , Hong-kyu Lee
发明人： Young-pyo Lee , Cheol-sung Yeon , Hee-dong Kim , Hong-kyu Lee
IPC分类号： G11B7/00
CPC分类号： G11B7/13 , G11B7/1263
摘要： An optical pickup used to record information on and/or reproduce information from an optical recording medium, the optical pickup including an optical module to emit a light beam; and a front photo-detector to monitor power of the light beam; wherein the optical module is coupled to the front photo-detector so that a fixed distance is maintained between the optical module and the front photo-detector.
摘要翻译： 一种用于在光学记录介质上记录信息和/或再现信息的光学拾取器，该光学拾取器包括用于发射光束的光学模块; 以及用于监视光束功率的前光检测器; 其中所述光学模块耦合到所述前光电检测器，使得在所述光学模块和所述前光电检测器之间保持固定的距离。
-
3.发明授权Front photo detector having no gain selection switch, optical pick-up including the front photo detector, and optical recording and/or playing apparatus including the front photo detector 失效没有增益选择开关的前光检测器，包括前光检测器的光学拾取器和包括前光检测器的光记录和/或播放装置公开(公告)号：US07636286B2
公开(公告)日：2009-12-22
申请号：US10792917
申请日：2004-03-05
申请人： Hong-kyu Lee , Hee-dong Kim , Pyong-yong Seong
发明人： Hong-kyu Lee , Hee-dong Kim , Pyong-yong Seong
IPC分类号： G11B7/00
CPC分类号： G11B31/02
摘要： A front photo detector (FPD) of an optical pick-up for an optical recording and playing apparatus having no gain selection switch, a simplified configuration, an improved prevention of an abnormal operation due to an error in gain selection, and improved reliability. The front photo detector includes a photo diode unit, a current-voltage amplifying circuit, and a voltage amplifying unit. The photo diode unit outputs current proportional to the power of the light emitted from one of a plurality of laser diodes. The current-voltage amplifying circuit converts the current output from the photo diode unit into a voltage. The voltage amplifying circuit amplifies the voltage output from the current-voltage amplifying circuit by a predetermined gain.
摘要翻译： 用于没有增益选择开关的光学记录和播放装置的光学拾取器的前光检测器（FPD），简化的配置，改善了由增益选择中的错误引起的异常操作的防止以及提高的可靠性。 前光检测器包括光电二极管单元，电流 - 电压放大电路和电压放大单元。 光电二极管单元输出与从多个激光二极管中的一个发射的光的功率成比例的电流。 电流 - 电压放大电路将来自光电二极管单元的电流输出转换为电压。 电压放大电路将从电流 - 电压放大电路输出的电压放大预定的增益。
-
4.发明申请Front photo detector having no gain selection switch, optical pick-up including the front photo detector, and optical recording and/or playing apparatus including the front photo detector 失效没有增益选择开关的前光检测器，包括前光检测器的光学拾取器和包括前光检测器的光记录和/或播放装置公开(公告)号：US20050025023A1
公开(公告)日：2005-02-03
申请号：US10792917
申请日：2004-03-05
申请人： Hong-kyu Lee , Hee-dong Kim , Pyong-yong Seong
发明人： Hong-kyu Lee , Hee-dong Kim , Pyong-yong Seong
CPC分类号： G11B31/02
摘要： A front photo detector (FPD) of an optical pick-up for an optical recording and playing apparatus having no gain selection switch, a simplified configuration, an improved prevention of an abnormal operation due to an error in gain selection, and improved reliability. The front photo detector includes a photo diode unit, a current-voltage amplifying circuit, and a voltage amplifying unit. The photo diode unit outputs current proportional to the power of the light emitted from one of a plurality of laser diodes. The current-voltage amplifying circuit converts the current output from the photo diode unit into a voltage. The voltage amplifying circuit amplifies the voltage output from the current-voltage amplifying circuit by a predetermined gain.
摘要翻译： 用于没有增益选择开关的光学记录和播放装置的光学拾取器的前光检测器（FPD），简化的配置，改善了由增益选择中的错误引起的异常操作的防止以及提高的可靠性。 前光检测器包括光电二极管单元，电流 - 电压放大电路和电压放大单元。 光电二极管单元输出与从多个激光二极管中的一个发射的光的功率成比例的电流。 电流 - 电压放大电路将来自光电二极管单元的电流输出转换为电压。 电压放大电路将从电流 - 电压放大电路输出的电压放大预定的增益。
-
-
-
搜索结果
4 条记录 (耗时 0.027 秒)
