公开(公告)号：US07251209B2

公开(公告)日：2007-07-31

申请号：US10424821

申请日：2003-04-29

申请人： Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

发明人： Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

IPC分类号： G11B7/135

CPC分类号： G11B7/1263 ,  G11B7/1275 ,  G11B7/1395 ,  G11B2007/0006

摘要： An optical pickup for a recording medium includes a light source, an objective lens, a main photodetector, and a front photodetector. The configuration of the optical pickup enables converging or diverging of light to be incident on a plate beam splitter so that light can be received at an effective light receiving region of a front photodetector without interference due to internal reflection occurring in the plate beam splitter. In the alternative, a wedge beam splitter in the optical pickup includes first and second mirror planes at a predetermined angle to transmit and reflect incident light at a predetermined ratio. In the optical pickup, an amount of light that is exactly proportional to an output power of the light source can be detected, where the output power of the light source can be accurately controlled, thereby improving a linearity of the output power of the light source.

摘要翻译： 用于记录介质的光学拾取器包括光源，物镜，主光电检测器和前光电检测器。 光拾取器的配置使得入射到平板光束分离器上的光会聚或发散，使得可以在前光电检测器的有效光接收区域处接收光，而不会由于在板分光器中发生内反射而受到干扰。 或者，光学拾取器中的楔形光束分离器包括预定角度的第一和第二反射镜平面，以预定比例透射和反射入射光。 在光学拾取器中，可以检测与光源的输出功率正好成正比的光量，其中可以精确地控制光源的输出功率，从而提高光源的输出功率的线性 。

公开(公告)号：US07343103B2

公开(公告)日：2008-03-11

申请号：US11413093

申请日：2006-04-28

申请人： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

发明人： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

IPC分类号： H04B10/08 ,  H04B10/06

CPC分类号： G11B7/1263 ,  G01J1/44 ,  G11B2007/0006

摘要： An apparatus and method for detecting beam power generated by a plurality of light sources, using a single device. The apparatus includes a light-receiving unit that receives the beam power generated by one of a plurality of light sources, and an amplifying unit that selects a gain, amplifies the beam power received by the light-receiving unit according to the selected gain, and outputs the beam power amplified as a detected beam power. According to the apparatus and method, received beam power (or amplification gain) is amplified by a gain determined according to the characteristics of the respective light sources. Thus, it is possible to provide the detected beam power in consideration of a sufficient dynamic range for the each light source, thereby realizing effective APC.

摘要翻译： 一种用于使用单个装置来检测由多个光源产生的光束功率的装置和方法。 该装置包括接收由多个光源中的一个产生的光束功率的光接收单元和选择增益的放大单元，根据所选择的增益放大由光接收单元接收的光束功率，以及 输出放大的光束功率作为检测到的光束功率。 根据该装置和方法，通过根据各个光源的特性确定的增益来放大接收光束功率（或放大增益）。 因此，考虑到每个光源的足够的动态范围，可以提供检测到的光束功率，从而实现有效的APC。

公开(公告)号：US20060188269A1

公开(公告)日：2006-08-24

申请号：US11413093

申请日：2006-04-28

申请人： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

发明人： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

IPC分类号： H04B10/06

CPC分类号： G11B7/1263 ,  G01J1/44 ,  G11B2007/0006

摘要： An apparatus and method for detecting beam power generated by a plurality of light sources, using a single device. The apparatus includes a light-receiving unit that receives the beam power generated by one of a plurality of light sources, and an amplifying unit that selects a gain, amplifies the beam power received by the light-receiving unit according to the selected gain, and outputs the beam power amplified as a detected beam power. According to the apparatus and method, received beam power (or amplification gain) is amplified by a gain determined according to the characteristics of the respective light sources. Thus, it is possible to provide the detected beam power in consideration of a sufficient dynamic range for the each light source, thereby realizing effective APC.

公开(公告)号：US07068933B2

公开(公告)日：2006-06-27

申请号：US10197329

申请日：2002-07-18

申请人： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

发明人： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

IPC分类号： H04B10/00

CPC分类号： G11B7/1263 ,  G01J1/44 ,  G11B2007/0006

摘要： An apparatus and method for detecting beam power generated by a plurality of light sources, using a single device. The apparatus includes a light-receiving unit that receives the beam power generated by one of a plurality of light sources, and an amplifying unit that selects a gain, amplifies the beam power received by the light-receiving unit according to the selected gain, and outputs the beam power amplified as a detected beam power. According to the apparatus and method, received beam power (or amplification gain) is amplified by a gain determined according to the characteristics of the respective light sources. Thus, it is possible to provide the detected beam power in consideration of a sufficient dynamic range for the each light source, thereby realizing effective APC.

公开(公告)号：US07272103B2

公开(公告)日：2007-09-18

申请号：US10751647

申请日：2004-01-06

申请人： Sung-du Kwon ,  Jun-hyuk Lee ,  Pyong-yong Seong ,  Hyun-cheal Bang ,  Jong-koog Lee ,  Yong-jun Cho

发明人： Sung-du Kwon ,  Jun-hyuk Lee ,  Pyong-yong Seong ,  Hyun-cheal Bang ,  Jong-koog Lee ,  Yong-jun Cho

IPC分类号： G11B7/00

CPC分类号： G11B7/1263

摘要： In order to improve the frequency characteristic of a laser power monitor device and the precision of laser power control when low-speed recording is performed, there is provided a laser power monitor device for an optical recording and/or reproducing apparatus, the laser power monitor device including a photo diode unit to receive part of a light emitted from a laser diode and output a current proportional to optical power, and a monitor circuit to receive the current output from the photo diode unit, convert the received current into a voltage, and outputs the voltage to an automatic laser power control circuit, and the photo diode unit includes a plurality of photo diodes connected to the monitor circuit to supply current to the monitor circuit. The laser power monitor device further includes a switch unit, wherein the switch unit is located between the photo diode unit and the monitor circuit to receive a signal on a current recording speed and switch so that the number of photo diodes supplying current to the monitor circuit is reduced as the recording speed is increased.

摘要翻译： 为了提高激光功率监视装置的频率特性和进行低速记录时的激光功率控制的精度，提供了一种用于光学记录和/或再现装置的激光功率监视装置，激光功率监视器 该装置包括：光电二极管单元，用于接收从激光二极管发射的一部分光并输出与​​光功率成比例的电流;以及监测电路，用于接收来自光电二极管单元的电流输出，将接收的电流转换成电压; 将电压输出到自动激光功率控制电路，并且光电二极管单元包括连接到监视器电路的多个光电二极管，以向监控电路提供电流。 所述激光功率监视装置还包括开关单元，其中所述开关单元位于所述光电二极管单元和所述监视器电路之间，以接收当前记录速度的信号并进行切换，使得向所述监视器电路提供电流的光电二极管的数量 随着记录速度的增加而减小。

公开(公告)号：US20050002303A1

公开(公告)日：2005-01-06

申请号：US10751647

申请日：2004-01-06

申请人： Sung-du Kwon ,  Jun-hyuk Lee ,  Pyong-yong Seong ,  Hyun-cheal Bang ,  Jong-koog Lee ,  Yong-jun Cho

发明人： Sung-du Kwon ,  Jun-hyuk Lee ,  Pyong-yong Seong ,  Hyun-cheal Bang ,  Jong-koog Lee ,  Yong-jun Cho

IPC分类号： G11B7/00 ,  G11B7/125 ,  H01S5/06

CPC分类号： G11B7/1263

摘要： In order to improve the frequency characteristic of a laser power monitor device and the precision of laser power control when low-speed recording is performed, there is provided a laser power monitor device for an optical recording and/or reproducing apparatus, the laser power monitor device including a photo diode unit to receive part of a light emitted from a laser diode and output a current proportional to optical power, and a monitor circuit to receive the current output from the photo diode unit, convert the received current into a voltage, and outputs the voltage to an automatic laser power control circuit, and the photo diode unit includes a plurality of photo diodes connected to the monitor circuit to supply current to the monitor circuit. The laser power monitor device further includes a switch unit, wherein the switch unit is located between the photo diode unit and the monitor circuit to receive a signal on a current recording speed and switch so that the number of photo diodes supplying current to the monitor circuit is reduced as the recording speed is increased.

摘要翻译： 为了提高激光功率监视装置的频率特性和进行低速记录时的激光功率控制的精度，提供了一种用于光学记录和/或再现装置的激光功率监视装置，激光功率监视器 该装置包括：光电二极管单元，用于接收从激光二极管发射的一部分光并输出与​​光功率成比例的电流;以及监测电路，用于接收来自光电二极管单元的电流输出，将接收的电流转换成电压; 将电压输出到自动激光功率控制电路，并且光电二极管单元包括连接到监视器电路的多个光电二极管，以向监控电路提供电流。 所述激光功率监视装置还包括开关单元，其中所述开关单元位于所述光电二极管单元和所述监视器电路之间，以接收当前记录速度的信号并进行切换，使得向所述监视器电路提供电流的光电二极管的数量 随着记录速度的增加而减小。

公开(公告)号：US07486596B2

公开(公告)日：2009-02-03

申请号：US11089535

申请日：2005-03-25

申请人： Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

发明人： Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

IPC分类号： G11B7/00

CPC分类号： G11B7/0956

摘要： A method and apparatus for compensating tilt. The tilt compensation method includes: obtaining one of a jitter best, an RF envelope, and a focus DC offset (FODC) from a detection signal of the ROM data region and determining whether the obtained value is within a tolerance range; and obtaining an initial skew compensation value using the obtained value when the obtained value is within the tolerance, changing the magnitude of current applied to an actuator designed to perform driving in at least three-axis directions to drive an objective lens of an optical pickup assembly in a radial tilt direction when the obtained value is not within the tolerance range, and repeating the obtaining of one of the jitter best, the RF envelope, and the FODC and changing the magnitude of the current until the obtained value is within the tolerance range.

摘要翻译： 一种用于补偿倾斜的方法和装置。 倾斜补偿方法包括：从ROM数据区域的检测信号中获得最佳抖动，RF包络和聚焦DC偏移（FODC）中的一个，并确定所获得的值是否在公差范围内; 以及当所获得的值在公差内时，使用所获得的值获得初始偏移补偿值，改变施加到设计成在至少三个轴方向上执行驱动的致动器的电流的大小，以驱动光学拾取组件的物镜 当获得的值不在公差范围内时，在径向倾斜方向上，并且重复获得最佳抖动之一，RF包络和FODC，并且改变电流的幅度直到所获得的值在公差范围内 。

公开(公告)号：US20050249077A1

公开(公告)日：2005-11-10

申请号：US11089535

申请日：2005-03-25

申请人： Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

发明人： Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

IPC分类号： G11B7/004 ,  G11B7/00 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B7/095

CPC分类号： G11B7/0956

摘要： A method and apparatus for compensating tilt. The tilt compensation method includes: obtaining one of a jitter best, an RF envelope, and a focus DC offset (FODC) from a detection signal of the ROM data region and determining whether the obtained value is within a tolerance range; and obtaining an initial skew compensation value using the obtained value when the obtained value is within the tolerance, changing the magnitude of current applied to an actuator designed to perform driving in at least three-axis directions to drive an objective lens of an optical pickup assembly in a radial tilt direction when the obtained value is not within the tolerance range, and repeating the obtaining of one of the jitter best, the RF envelope, and the FODC and changing the magnitude of the current until the obtained value is within the tolerance range.

摘要翻译： 一种用于补偿倾斜的方法和装置。 倾斜补偿方法包括：从ROM数据区域的检测信号中获得最佳抖动，RF包络和聚焦DC偏移（FODC）中的一个，并确定所获得的值是否在公差范围内; 以及当所获得的值在公差内时，使用所获得的值获得初始偏移补偿值，改变施加到设计成在至少三个轴方向上执行驱动的致动器的电流的大小，以驱动光学拾取组件的物镜 当获得的值不在公差范围内时，在径向倾斜方向上，并且重复获得最佳抖动之一，RF包络和FODC，并且改变电流的幅度直到获得的值在容许范围内 。

公开(公告)号：US07280458B2

公开(公告)日：2007-10-09

申请号：US10120786

申请日：2002-04-12

申请人： Yong-jae Lee ,  Sung-ro Go ,  Pyong-yong Seong ,  Chang-jin Yang ,  Gi-bong Song ,  Byung-in Ma ,  Jong-koog Lee

发明人： Yong-jae Lee ,  Sung-ro Go ,  Pyong-yong Seong ,  Chang-jin Yang ,  Gi-bong Song ,  Byung-in Ma ,  Jong-koog Lee

IPC分类号： G11B7/95

CPC分类号： G11B7/131 ,  G11B7/00718 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0946 ,  G11B7/0956 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus includes a first light source to emit a first light beam having a predetermined wavelength, a first optical path changer to change a proceeding path of the first light beam, an objective lens to focus the first light beam on a recording medium, a diffraction member to divide the first light beam reflected by the recording medium into five light regions, the diffraction member having a first diffraction region having a wide width in a direction corresponding to a tangential direction of the recording medium and second through fifth diffraction regions sequentially arranged around the outside of the first diffraction region in a direction corresponding to a radial direction of the recording medium, and a first photodetector having first through fifth light receiving portions to receive the first light beam reflected by the recording medium.

摘要翻译： 一种光拾取装置包括：发射具有预定波长的第一光束的第一光源;改变第一光束的行进路径的第一光路改变器;将第一光束聚焦在记录介质上的物镜; 衍射构件，用于将由记录介质反射的第一光束分成五个光区域，衍射构件具有在与记录介质的切线方向对应的方向上具有宽宽度的第一衍射区域和第二至第五衍射区域 在与所述记录介质的径向对应的方向上围绕所述第一衍射区域的外侧布置;以及第一光电检测器，具有第一至第五光接收部分，以接收由所述记录介质反射的所述第一光束。