公开(公告)号：US07145859B2

公开(公告)日：2006-12-05

申请号：US10244605

申请日：2002-09-17

申请人： Soo-han Park ,  Young-sun Park ,  Moon-lwhan Lee ,  Do-hoan Nam ,  Chun-seong Park

发明人： Soo-han Park ,  Young-sun Park ,  Moon-lwhan Lee ,  Do-hoan Nam ,  Chun-seong Park

IPC分类号： G11B7/135

CPC分类号： G11B7/127 ,  G11B7/08 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/13922 ,  G11B7/22 ,  G11B2007/0006

摘要： An optical pickup includes a light source which emits first and second lights having different wavelengths for a first recording medium and a second recording medium having a relatively large thickness, respectively, an optical path changer which alters a traveling path of incident light, and an objective lens which focuses the first and second lights on the recording medium. While the light source emits the first light, a photodetector is adjusted to be aligned with the optical axis for the first recording medium. The light source and/or a sensing lens are adjusted in the direction of the optical axis, and the tilt of the objective lens is adjusted. Next, while the light source is operated to emit the second light, the light source is adjusted in a rotating direction. As such, an optical axis alignment is completed for the first and second recording media.

公开(公告)号：US07092325B2

公开(公告)日：2006-08-15

申请号：US10460655

申请日：2003-06-13

申请人： Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Hyo-chan Lee ,  Jong-uk Kim ,  Seong-su Park ,  Tae-youn Heor ,  Do-hoan Nam

发明人： Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Hyo-chan Lee ,  Jong-uk Kim ,  Seong-su Park ,  Tae-youn Heor ,  Do-hoan Nam

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/0906 ,  G11B2007/0006

摘要： A method of arranging an optical pickup system on a deck of an optical recording and/or reproducing apparatus, which enables detection of a tracking error signal using one photodetector based on a three-beam method and by a differential phase detection method. The optical pickup system includes a light source, a diffractive optical element which diffracts a light beam incident from the light source and splits the same into at least three beams, a plate-type beam splitter which changes a propagation path of the light beam, and a photodetector including at least one main photodetector having at least four sections and a plurality of sub-photodetectors. The optical pickup system is constructed so as to have a reflecting mirror redirect the propagation path of the light beam emitted from the light source toward a recording medium. The method of arranging the optical pickup includes, where the propagation path of the light beam transmitted through the plate-type beam splitter to the photodetector is an optical path axis, arranging the optical pickup system so as to have the optical path axis tilted with respect to an axis in a tangential direction of the recording medium and have the photodetector placed away from a rotation center of a motor that rotates the recording medium, and selectively optimizing the arrangement of the photodetector to detect a tracking error signal by the differential phase detection method.

摘要翻译： 一种在光学记录和/或再现装置的平台上布置光学拾取系统的方法，其能够使用基于三光束方法的一个光电检测器和通过差分相位检测方法检测跟踪误差信号。 光拾取系统包括光源，衍射从光源入射的光束并衍射成至少三个光束的衍射光学元件，改变光束传播路径的板式分束器，以及 光电检测器，其包括至少一个具有至少四个部分的主光电检测器和多个子光电检测器。 光学拾取系统被构造成具有将从光源发射的光束的传播路径重定向到记录介质的反射镜。 布置光学拾取器的方法包括：将透过板式分束器的光束的传播路径传播到光电检测器的方法是将光学拾取系统布置成使光学轴线相对于 到记录介质的切线方向的轴线上，并且将光电检测器放置成远离旋转记录介质的马达的旋转中心，并且选择性地优化光电检测器的布置以通过差分相位检测方法检测跟踪误差信号 。

公开(公告)号：US07724616B2

公开(公告)日：2010-05-25

申请号：US11159179

申请日：2005-06-23

申请人： Bong-gi Kim ,  Soo-han Park ,  Jung-gug Pae ,  Chun-seong Park

发明人： Bong-gi Kim ,  Soo-han Park ,  Jung-gug Pae ,  Chun-seong Park

IPC分类号： G11B7/00

CPC分类号： G11B7/093 ,  G11B7/0932 ,  G11B7/0945 ,  G11B7/0956

摘要： An optical recording/reproducing apparatus, medium, and method and a controlling apparatus, medium, and method thereof. The recording/reproducing apparatus includes an optical pickup actuator including a holder formed on a base, a blade connected to the holder with a plurality of elastic supporters, a pair of focus coils for operating the blade in a focus direction, track coils for operating the blade in a tracking direction, magnets, a memory for storing a lookup table for the height of the blade according to electric current, a lookup table for the tilt of the blade according to the electric current supplied to the focus coils, a lookup table for the actual tilt of an optical disk according to the height of the blade, and a controller for computing a tilt difference between the optical disk and the blade and controlling the electric currents supplied to the focus coils to compensate for the tilt difference.

摘要翻译： 一种光记录/再现装置，介质及方法及其控制装置，介质及其方法。 记录/再现装置包括光学拾取器致动器，其包括形成在基座上的保持器，连接到具有多个弹性支撑件的保持器的刀片，用于在聚焦方向上操作刀片的一对聚焦线圈，用于操作 沿着跟踪方向的刀片，磁体，用于根据电流存储用于刀片高度的查找表的存储器，用于根据提供给聚焦线圈的电流来倾斜刀片的查找表，用于 光盘根据叶片的高度的实际倾斜度，以及用于计算光盘和叶片之间的倾斜差的控制器，并且控制提供给聚焦线圈的电流以补偿倾斜差异。

公开(公告)号：US07254098B2

公开(公告)日：2007-08-07

申请号：US10677731

申请日：2003-10-03

申请人： Jung-gug Pae ,  Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Do-whan Nam ,  Seong-su Park ,  Jung-woo Hong ,  Tae-youn Heor

发明人： Jung-gug Pae ,  Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Do-whan Nam ,  Seong-su Park ,  Jung-woo Hong ,  Tae-youn Heor

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G11B7/0932 ,  G11B2007/0006

摘要： A CD-DVD compatible optical pickup in which both on-axis and off-axis light form a circular light spot on a recording surface of an optical recording medium, and an optical recording and/or reproducing apparatus using the same. The CD-DVD compatible optical pickup includes an optical output module, an objective lens, an optical path conversion unit, a photodetector, and an actuator. The optical output module has a mount and light sources emitting light of different wavelengths. The objective lens focuses the emitted light onto two types of optical recording media. The optical path conversion unit between the optical output module and objective lens, converts incident light. The photodetector receives beams emitted from the light sources, reflected from the optical recording media, and then passed through the optical path conversion unit, detecting data and error signals. The actuator has a movable member, moving the objective lens and compensating focusing and tracking error signals.

摘要翻译： 在光记录介质的记录表面上的同轴和离轴光都形成圆形光点的CD-DVD兼容光学拾取器，以及使用该光拾取器的光学记录和/或再现装置。 CD-DVD兼容光学拾取器包括光输出模块，物镜，光路转换单元，光电检测器和致动器。 光输出模块具有发射不同波长的光的安装座和光源。 物镜将发射的光聚焦到两种类型的光学记录介质上。 光输出模块和物镜之间的光路转换单元转换入射光。 光电检测器接收从光记录介质反射的光源发出的光束，然后通过光路转换单元，检测数据和误差信号。 致动器具有可动构件，移动物镜并补偿聚焦和跟踪误差信号。

公开(公告)号：US20060261243A1

公开(公告)日：2006-11-23

申请号：US10569088

申请日：2003-12-22

申请人： Soo-han Park ,  Bong-gi Kim ,  Chun-seong Park ,  Jung-woo Hong ,  Jong-uk Kim

发明人： Soo-han Park ,  Bong-gi Kim ,  Chun-seong Park ,  Jung-woo Hong ,  Jong-uk Kim

IPC分类号： G02B7/04

CPC分类号： G11B7/0945 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： An optical reproducing apparatus having a photo detector using a laser diode of two wavelengths. A 16-split photo diode for detecting laser beams respectively for a DVD and a CD enables an optical pick-up compatible with a wide variety of optical discs to be achieved by applying the laser diode of two wavelengths. Focusing error signals and tracking error signals are detected by using different methods according to a type of optical disc, improving production yield and decreasing manufacturing costs of a multi-disc reproduction apparatus.

摘要翻译： 具有使用两个波长的激光二极管的光电检测器的光学再现装置。 分别用于检测DVD和CD的激光束的16分割光电二极管能够通过应用两个波长的激光二极管实现与各种光盘兼容的光学拾取器。 通过使用不同的方法根据光盘的类型来检测聚焦误差信号和跟踪误差信号，提高了生产成本并降低了多盘再现设备的制造成本。

公开(公告)号：US07881168B2

公开(公告)日：2011-02-01

申请号：US10577441

申请日：2004-04-09

申请人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

发明人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： An optical pickup apparatus is provided for use in a recording/reproducing apparatus to record/reproduce information on/from recording media having different formats. Such an optical pickup apparatus comprises a dual wavelength laser diode; a hologram module arranged to split a light which is incident to a recording medium into a plurality of beams; and a photo-detector arranged to receive a light beam reflected from the recording medium and detect an information signal and a signal for servo control. Each of the split beams is focused on a predetermined position corresponding to a format of the recording medium. The light beams reflected from the recording medium are detected by the photo-detector to generate a focus error signal and a tracking error signal. Thus, the optical pickup apparatus records and reproduces information on and from recording media having different formats by using a hologram of a simple pattern. The optical structure of the optical pickup apparatus is simple which enables easy assembly and manufacture and provides signal regeneration when operating in a high temperature.

摘要翻译： 提供一种用于记录/再现装置的光拾取装置，用于在具有不同格式的记录介质上记录/再现信息。 这种光拾取装置包括双波长激光二极管; 全息图模块，被布置成将入射到记录介质的光分成多个光束; 以及光检测器，其布置成接收从记录介质反射的光束，并检测信息信号和用于伺服控制的信号。 每个分割光束聚焦在对应于记录介质的格式的预定位置上。 由光检测器检测从记录介质反射的光束，以产生聚焦误差信号和跟踪误差信号。 因此，光学拾取装置通过使用简单图案的全息图在具有不同格式的记录介质上记录和再现信息。 光学拾取装置的光学结构简单，能够容易地进行组装和制造，并且在高温操作时提供信号再生。

公开(公告)号：US20060109766A1

公开(公告)日：2006-05-25

申请号：US10993443

申请日：2004-11-22

申请人： Bong-gi Kim ,  Soo-han Park ,  Chun-seong Park

发明人： Bong-gi Kim ,  Soo-han Park ,  Chun-seong Park

IPC分类号： G11B7/095 ,  G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/1395

摘要： An optical pickup which can remove birefringence due to the non-uniformity of an optical recording medium by using a polarization beam splitter. The optical pickup includes a light source emitting a laser beam, a beam splitter reflecting part of incident light and straight transmitting the remaining light to change a proceeding path of the incident light, an objective lens focusing the incident light passed through the beam splitter to form a light spot on an optical recording medium, a polarization beam splitter arranged on an optical path between the beam splitter and the objective lens for transmitting light having one polarization and reflecting light having a different polarization. The optical pickup further includes a first photodetector for receiving the light having one polarization which is reflected from the optical recording medium and is transmitted by the polarization beam splitter and passes through the beam splitter, and a second photodetector for receiving the light having a different polarization reflected from the optical recording medium that is reflected by the polarization beam splitter. An information signal and error signals are then determined from a signal detected by the first and second photodetectors.

摘要翻译： 一种光拾取器，其可以通过使用偏振分束器来消除由于光记录介质的不均匀性引起的双折射。 光学拾取器包括发射激光束的光源，分光器反射入射光的一部分，并直接透射剩余的光以改变入射光的行进路径;物镜聚焦通过分束器的入射光以形成 光学记录介质上的光点，设置在分束器和物镜之间的光路上的偏振分束器，用于透射具有一个偏振光的光和具有不同偏振的反射光。 光学拾取器还包括第一光电检测器，用于接收具有一个极化的光，该偏振光从光记录介质反射并被偏振分束器透射并通过分束器;以及第二光电检测器，用于接收具有不同极化的光 由偏振分束器反射的光记录介质反射。 然后，从由第一和第二光电检测器检测的信号确定信息信号和误差信号。

公开(公告)号：US20050286357A1

公开(公告)日：2005-12-29

申请号：US11159179

申请日：2005-06-23

申请人： Bong-gi Kim ,  Soo-han Park ,  Jung-gug Pae ,  Chun-seong Park

发明人： Bong-gi Kim ,  Soo-han Park ,  Jung-gug Pae ,  Chun-seong Park

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

CPC分类号： G11B7/093 ,  G11B7/0932 ,  G11B7/0945 ,  G11B7/0956

摘要： An optical recording/reproducing apparatus, medium, and method and a controlling apparatus, medium, and method thereof. The recording/reproducing apparatus includes an optical pickup actuator including a holder formed on a base, a blade connected to the holder with a plurality of elastic supporters, a pair of focus coils for operating the blade in a focus direction, track coils for operating the blade in a tracking direction, magnets, a memory for storing a lookup table for the height of the blade according to electric current, a lookup table for the tilt of the blade according to the electric current supplied to the focus coils, a lookup table for the actual tilt of an optical disk according to the height of the blade, and a controller for computing a tilt difference between the optical disk and the blade and controlling the electric currents supplied to the focus coils to compensate for the tilt difference.

摘要翻译： 一种光记录/再现装置，介质及方法及其控制装置，介质及其方法。 记录/再现装置包括光学拾取器致动器，其包括形成在基座上的保持器，连接到具有多个弹性支撑件的保持器的刀片，用于在聚焦方向上操作刀片的一对聚焦线圈，用于操作 沿着跟踪方向的刀片，磁体，用于根据电流存储用于刀片高度的查找表的存储器，用于根据提供给聚焦线圈的电流来倾斜刀片的查找表，用于 光盘根据叶片的高度的实际倾斜度，以及用于计算光盘和叶片之间的倾斜差的控制器，并且控制提供给聚焦线圈的电流以补偿倾斜差异。

公开(公告)号：US07450477B2

公开(公告)日：2008-11-11

申请号：US10993443

申请日：2004-11-22

申请人： Bong-gi Kim ,  Soo-han Park ,  Chun-seong Park

发明人： Bong-gi Kim ,  Soo-han Park ,  Chun-seong Park

IPC分类号： G11B7/13

CPC分类号： G11B7/1356 ,  G11B7/1395

摘要： An optical pickup which can remove birefringence due to the non-uniformity of an optical recording medium by using a polarization beam splitter. The optical pickup includes a light source emitting a laser beam, a beam splitter reflecting part of incident light and straight transmitting the remaining light to change a proceeding path of the incident light, an objective lens focusing the incident light passed through the beam splitter to form a light spot on an optical recording medium, a polarization beam splitter arranged on an optical path between the beam splitter and the objective lens for transmitting light having one polarization and reflecting light having a different polarization. The optical pickup further includes a first photodetector for receiving the light having one polarization which is reflected from the optical recording medium and is transmitted by the polarization beam splitter and passes through the beam splitter, and a second photodetector for receiving the light having a different polarization reflected from the optical recording medium that is reflected by the polarization beam splitter. An information signal and error signals are then determined from a signal detected by the first and second photodetectors.

摘要翻译： 一种光拾取器，其可以通过使用偏振分束器来消除由于光记录介质的不均匀性引起的双折射。 光学拾取器包括发射激光束的光源，分光器反射入射光的一部分，并直接透射剩余的光以改变入射光的行进路径;物镜聚焦通过分束器的入射光以形成 光学记录介质上的光点，设置在分束器和物镜之间的光路上的偏振分束器，用于透射具有一个偏振光的光和具有不同偏振的反射光。 光学拾取器还包括第一光电检测器，用于接收具有一个极化的光，该偏振光从光记录介质反射并被偏振分束器透射并通过分束器;以及第二光电检测器，用于接收具有不同极化的光 由偏振分束器反射的光记录介质反射。 然后，从由第一和第二光电检测器检测的信号确定信息信号和误差信号。

公开(公告)号：US20070070825A1

公开(公告)日：2007-03-29

申请号：US10577441

申请日：2004-04-09

申请人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

发明人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

IPC分类号： G11B11/00

CPC分类号： G11B7/1275 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： An optical pickup apparatus is provided for use in a recording/reproducing apparatus to record/reproduce information on/from recording media having different formats. Such an optical pickup apparatus comprises a dual wavelength laser diode; a hologram module arranged to split a light which is incident to a recording medium into a plurality of beams; and a photo-detector arranged to receive a light beam reflected from the recording medium and detect an information signal and a signal for servo control. Each of the split beams is focused on a predetermined position corresponding to a format of the recording medium. The light beams reflected from the recording medium are detected by the photo-detector to generate a focus error signal and a tracking error signal. Thus, the optical pickup apparatus records and reproduces information on and from recording media having different formats by using a hologram of a simple pattern. The optical structure of the optical pickup apparatus is simple which enables easy assembly and manufacture and provides signal regeneration when operating in a high temperature.

摘要翻译： 提供一种用于记录/再现装置的光拾取装置，用于在具有不同格式的记录介质上记录/再现信息。 这种光拾取装置包括双波长激光二极管; 全息图模块，被布置成将入射到记录介质的光分成多个光束; 以及光检测器，其布置成接收从记录介质反射的光束，并检测信息信号和用于伺服控制的信号。 每个分割光束聚焦在对应于记录介质的格式的预定位置上。 由光检测器检测从记录介质反射的光束，以产生聚焦误差信号和跟踪误差信号。 因此，光学拾取装置通过使用简单图案的全息图在具有不同格式的记录介质上记录和再现信息。 光学拾取装置的光学结构简单，能够容易地进行组装和制造，并且在高温操作时提供信号再生。