公开(公告)号：US20080037387A1

公开(公告)日：2008-02-14

申请号：US11808517

申请日：2007-06-11

Applicant: Sun-mook Park ,  Ui-yol Kim ,  Jong-kook Lee ,  Pyong-yong Seong

Inventor： Sun-mook Park ,  Ui-yol Kim ,  Jong-kook Lee ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B7/0903 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1378 ,  G11B2007/0006

Abstract: An optical pickup apparatus and an optical recording/reproducing system including the same, the optical pickup apparatus includes at least two optical systems for different types of optical recording media, one of objective lenses of the optical systems being offset from a central line of the optical recording medium, wherein the optical system including the offset objective lens having a diffraction grating diffracting light emitted from a light source to form a main beam and sub-beams, wherein the diffraction grating includes first and second diffraction regions having different grating patterns arranged alternately thereon, and a center of each sub-beam is arranged at a boundary of the first and second diffraction regions of the diffraction grating, and a center of the diffraction grating and an optical axis of the light source are adjusted to be coincided with each other, preventing generation of an alternating current in a Push-Pull signal of the sub-beams.

Abstract translation: 一种光学拾取装置和包括该光学拾取装置的光学记录/再现系统，该光学拾取装置包括用于不同类型的光学记录介质的至少两个光学系统，光学系统的物镜之一偏离光学中心线 其中所述光学系统包括具有衍射光栅的衍射光栅的光学系统，所述衍射光栅衍射从光源发射的光以形成主光束和子光束，其中所述衍射光栅包括交替地布置有不同格栅图案的第一和第二衍射区域 并且每个子光束的中心被布置在衍射光栅的第一和第二衍射区域的边界处，并且衍射光栅的中心和光源的光轴被调节为彼此一致， 防止在子光束的推挽信号中产生交流电。

公开(公告)号：US07283440B2

公开(公告)日：2007-10-16

申请号：US10073061

申请日：2002-02-12

Applicant: Kun-soo Kim ,  In-wook Hwang ,  Pyong-yong Seong

Inventor： Kun-soo Kim ,  In-wook Hwang ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/0903 ,  G11B7/0943 ,  G11B7/1275 ,  G11B7/131 ,  G11B2007/0006

Abstract: An optical recording/reproducing apparatus includes an optical pickup and a signal processor. The optical pickup includes an optical splitting device which splits light emitted from a first light source into a main light beam and sub-light beams which are symmetrical with respect to the main light beam and irradiates the split light beams on a recording medium, and a light detection device which receives the main light beam and the sub-light beams reflected by the recording medium, so as to detect a tracking error signal in a three-beam method and one of a push-pull method and an improved push-pull method. The signal processor receives the detection signals output by the light detection device and detects the tracking error signal in the three-beam method and one of the push-pull method and the improved push-pull method, and otherwise selectively detects the tracking error signal in one of the three-beam method, the push-pull method and the improved push-pull method, so as to realize an optimal tracking servo-control. Since a selective use of one of the improved push-pull method, the push-pull method and the three-beam method can be made according to the type of an optical disc, the optimal tracking servo-control can be realized regardless of the depth of a pit in an optical disc during a reproduction of data from the optical disc, such as a non-rewritable optical disc.

Abstract translation: 光学记录/再现装置包括光学拾取器和信号处理器。 光拾取器包括将从第一光源发射的光分成主光束的光分束装置和相对于主光束对称的子光束，并将分束光束照射在记录介质上， 光检测装置，其接收主光束和由记录介质反射的子光束，以便以三光束方式检测跟踪误差信号，并且推挽方法和改进的推挽方法之一 。 信号处理器接收由光检测装置输出的检测信号，并以三光束方式检测跟踪误差信号以及推挽方法和改进的推挽方法之一，否则选择性地检测跟踪误差信号 三波束法，推挽法和推挽法改进，实现了最优跟踪伺服控制。 由于可以选择性地使用改进的推挽方法之一，可以根据光盘的类型进行推挽方式和三光束方式，可以实现最佳的跟踪伺服控制，而与深度无关 在从诸如不可重写光盘的光盘再现数据期间光盘中的凹坑。

公开(公告)号：US07218598B2

公开(公告)日：2007-05-15

申请号：US10655608

申请日：2003-09-05

Applicant: Kun-soo Kim ,  Pyong-yong Seong ,  Sun-mook Park

Inventor： Kun-soo Kim ,  Pyong-yong Seong ,  Sun-mook Park

IPC: G11B7/00

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B2007/0006

Abstract: An optical pickup using a two-wavelength light source module includes a light source module, a collimating lens, and a first optical element. The light source module includes first and second light sources which emit first and second light beams of different wavelengths and are formed in a single package. The collimating lens directs the first and/or second light beams into convergent light or divergent light so that the convergent light or the divergent light is incident on the objective lens. The optical pickup is a finite optical system due to the collimating lens. The first optical element is disposed on the traveling paths of the first and second light beams, operates as a lens only for one of the first and second light beams, and corrects a position difference between the first and second light sources along a traveling direction of light. The optical pickup further includes a second optical element which is disposed on the traveling paths of the first and second light beams and matches traveling optical axes of the first and second light beams with each other.

Abstract translation: 使用双波长光源模块的光学拾取器包括光源模块，准直透镜和第一光学元件。 光源模块包括发射不同波长的第一和第二光束并且形成在单个封装中的第一和第二光源。 准直透镜将第一和/或第二光束引导成会聚光或发散光，使得会聚光或发散光入射到物镜上。 由于准直透镜，光学拾取器是有限的光学系统。 第一光学元件设置在第一和第二光束的行进路径上，仅作为第一和第二光束中的一个的透镜操作，并且沿第一和第二光束的行进方向校正第一和第二光源之间的位置差 光。 光学拾取器还包括第二光学元件，其设置在第一和第二光束的行进路径上并使第一和第二光束的行进光轴相互匹配。

公开(公告)号：US20060061887A1

公开(公告)日：2006-03-23

申请号：US11226203

申请日：2005-09-15

Applicant: Byung-youn Song ,  Hyung-loo Kang ,  Sang-yol Yoon ,  Pyong-yong Seong ,  Young-won Lee

Inventor： Byung-youn Song ,  Hyung-loo Kang ,  Sang-yol Yoon ,  Pyong-yong Seong ,  Young-won Lee

IPC: G02B7/02

CPC classification number: G11B7/1369 ,  G11B7/0932 ,  G11B7/0956 ,  G11B7/13925 ,  H05K1/189 ,  H05K3/3405

Abstract: An optical pickup actuator including a multi-conductive suspension. The optical pickup actuator may include a base, a holder fixed to the base, a bobbin holding an object lens and having a plurality of driving coils, and a plurality of suspensions connected between the bobbin and the holder and movably supporting the bobbin toward the holder, wherein each of the suspensions may be a multi-conductive suspension including a flexible substrate and a plurality of wires, formed on the flexible substrate, applying currents to the coils.

公开(公告)号：US06873592B2

公开(公告)日：2005-03-29

申请号：US10188860

申请日：2002-07-05

Applicant: Cheol-sung Yeon ,  Pyong-yong Seong

Inventor： Cheol-sung Yeon ,  Pyong-yong Seong

IPC: G11B7/125 ,  G11B7/135 ,  G11B7/00

CPC classification number: G11B7/1365 ,  G11B7/123

Abstract: A slim optical pickup apparatus which records/reads information from a recording medium includes a light source, an objective lens which focuses a beam incident from the light source on the recording medium, an optical device which is provided on an optical path between the light source and the objective lens, and converts the beam incident from the light source into a parallel beam, an optical axis shifting unit which is provided on an optical path between the optical device and the objective lens, and shifts an optical axis of the parallel beam passing through the optical device in parallel in a direction, a reflecting mirror which is provided on an optical path between the optical axis shifting unit and the objective lens, and reflects the parallel beam passing through the optical axis shifting unit toward the recording medium, and a photodetector which receives a beam reflected from the recording medium and passed through the optical axis shifting unit, and performs a photoelectric conversion. Use of the optical path shifting unit reduces the height of an optical pickup apparatus, thereby providing a slim optical pickup apparatus using an existing light source and photodetector of a conventional size.

Abstract translation: 从记录介质记录/读取信息的细长光学拾取装置包括光源，将从光源入射的光束聚焦在记录介质上的物镜，设置在光源之间的光路上的光学装置 和物镜，并将从光源入射的光束转换为平行光束;光轴移动单元，设置在光学设备和物镜之间的光路上，并使平行光束通过的光轴移动 通过光学装置沿一个方向平行地设置反射镜，该反射镜设置在光轴移动单元和物镜之间的光路上，并将通过光轴移动单元的平行光束反射到记录介质，以及 光接收器，其接收从记录介质反射并通过光轴移动单元的光束，并执行光电 转换。 使用光路移动单元降低了光学拾取装置的高度，从而提供了使用现有的光源和常规尺寸的光电检测器的超薄光学拾取装置。

公开(公告)号：US20050052968A1

公开(公告)日：2005-03-10

申请号：US10751114

申请日：2004-01-05

Applicant: Dong-ryeol Lee ,  Pyong-yong Seong ,  Kun-soo Kim

Inventor： Dong-ryeol Lee ,  Pyong-yong Seong ,  Kun-soo Kim

IPC: G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/1365 ,  G11B7/1275 ,  G11B7/13922 ,  G11B7/1395 ,  G11B2007/0006

Abstract: A compatible type optical pickup using a wedge type beam splitter that can record and/or reproduce information on/from optical recording media having different formats. The compatible type optical pickup includes: a first light source that generates and emits a first light beam of a predetermined wavelength; a second light source that generates and emits a second light beam having a different wavelength from that of the first light beam; a wedge type beam splitter disposed in an optical path between the first and second light sources, which changes the traveling paths of the first and second light beams to allow the first and second light beams to travel along the same optical path and minimizes aberrations; a main beam splitter disposed in an optical path between the wedge type beam splitter and an optical recording medium, which changes the traveling paths of incident light beams; an objective lens that focuses the first and second light beams entered via the main beam splitter onto the optical recording medium; and a main photodetector that receives the first and second light beams reflected from the optical recording medium detects an information signal and an error signal.

Abstract translation: 一种使用楔型分光器的兼容型光学拾取器，其可以在具有不同格式的光学记录介质上记录和/或再现信息。 兼容型光学拾取器包括：产生并发射预定波长的第一光束的第一光源; 产生和发射具有与第一光束的波长不同的波长的第二光束的第二光源; 设置在第一和第二光源之间的光路中的楔形分束器，其改变第一和第二光束的行进路径，以允许第一和第二光束沿着相同的光路行进并使像差最小化; 设置在楔形分束器和光学记录介质之间的光路中的主分束器，其改变入射光束的行进路径; 将通过主分束器进入的第一和第二光束聚焦在光学记录介质上的物镜; 并且接收从光记录介质反射的第一和第二光束的主光电检测器检测信息信号和误差信号。

公开(公告)号：US20050025023A1

公开(公告)日：2005-02-03

申请号：US10792917

申请日：2004-03-05

Applicant: Hong-kyu Lee ,  Hee-dong Kim ,  Pyong-yong Seong

Inventor： Hong-kyu Lee ,  Hee-dong Kim ,  Pyong-yong Seong

IPC: G11B7/125 ,  G11B7/135 ,  G11B31/02 ,  H03F3/08 ,  H03F3/68 ,  H03G3/10 ,  G11B31/00

CPC classification number: G11B31/02

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06449241B1

公开(公告)日：2002-09-10

申请号：US09433301

申请日：1999-11-03

Applicant: Pyong-yong Seong ,  Jung-wan Ko ,  In-sik Park

Inventor： Pyong-yong Seong ,  Jung-wan Ko ,  In-sik Park

IPC: G11B724

CPC classification number: G11B7/24085 ,  G11B7/007 ,  G11B7/24

Abstract: An optical disk having an improved structure is provided so that about 15 gigabytes or more can be recorded on each information recording surface. The optical disk includes at least one information substrate having an incident surface where light for recording/reproducing signals is input and a recording surface where information signals are recorded, and at least one reflection layer formed by being coated on the recording surface for reflecting at least a part of incident light. In the optical disk, assuming that the entire thickness of the optical disk is D and the distance between the incident surface and the recording surface of the information substrate is D1, the inequality 0.20≦D1/D≦0.38 is satisfied. Also, the optical disk includes a first information substrate having an incident surface where light for recording/reproducing signals is input and a first recording surface where information signals are recorded, a first reflection layer formed by being coated on the first recording surface for reflecting at least a part of incident light, and a second reflection layer formed on the second recording surface for reflecting at least a part of incident light. In the optical disk, assuming that the entire thickness of the optical disk is D and the distance between the incident surface and the first recording surface of the first information substrate is D1, the inequality 0.20≦D1/D≦0.38 is satisfied.

Abstract translation: 提供了具有改进结构的光盘，使得每个信息记录表面上可以记录大约15吉字节或更多。 光盘包括至少一个具有入射表面的信息衬底，其中输入用于记录/再现信号的光和记录信息信号的记录表面，以及至少一个反射层，其被形成在记录表面上以至少反射 一部分入射光。 在光盘中，假设光盘的整个厚度为D，信息基板的入射表面和记录表面之间的距离为D1，则满足不等式0.20 <= D1 / D <= 0.38。 此外，光盘包括具有入射面的第一信息基板，其中输入用于记录/再现信号的光，以及记录信息信号的第一记录表面，通过涂覆在第一记录表面上形成的第一反射层，用于反射 入射光的至少一部分，以及形成在第二记录面上的第二反射层，用于反射入射光的至少一部分。 在光盘中，假设光盘的整个厚度为D，并且第一信息基板的入射表面和第一记录表面之间的距离为D1，则满足不等式0.20 <= D1 / D <= 0.38。

公开(公告)号：US5701288A

公开(公告)日：1997-12-23

申请号：US564430

申请日：1995-11-29

Applicant: Pyong-yong Seong

Inventor： Pyong-yong Seong

IPC: G11B7/00 ,  G11B7/005 ,  G11B7/09 ,  G11B19/12

CPC classification number: G11B7/094 ,  G11B19/12 ,  G11B7/005 ,  G11B7/0945 ,  G11B2007/0006 ,  G11B7/0908

Abstract: An object pickup device includes a light source, an object lens for concentrating light generated from the light source onto an optical disk, a photodetector for detecting a signal from the light reflected from the optical disk, a disk detecting portion for detecting the light quantity in a light spot concentrated on the optical disk by the object lens and for detecting the optical disk type, a focus offset calculating portion for calculating a focus offset corresponding to the detected disk type, a focus servo portion for performing a focus servo mechanism according to the signal calculated from the focus offset and the signals detected in the photodetector, and a light output optimizing means for optimizing the light output of the light source according to the calculated focus offset signal. Meanwhile, a controlling method of a light output in the optical pickup device includes a disk kind detecting step, a focus offset calculating step, a focus offset adjusting step, and a compensating a focus and track error step.

Abstract translation: 一种物体拾取装置，包括光源，用于将从光源产生的光集中到光盘上的物镜，用于检测来自光盘反射的光的信号的光电检测器，用于检测来自光盘的光量的光盘检测部分 通过物镜集中在光盘上并用于检测光盘类型的光斑;聚焦偏移计算部分，用于计算与检测到的光盘类型相对应的聚焦偏移;聚焦伺服部分，用于执行根据所述光盘类型的聚焦伺服机构; 根据所述聚焦偏移和在所述光电检测器中检测到的信号计算的信号;以及光输出优化装置，用于根据所计算的聚焦偏移信号优化所述光源的光输出。 同时，光拾取装置中的光输出的控制方法包括盘类型检测步骤，聚焦偏移计算步骤，聚焦偏移调整步骤和补偿聚焦和轨道误差步骤。