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    Optical recording/reproducing apparatus capable of recording/reproducing information onto/from various types of optical recording media of different recording densities and different thicknesses
    61.
    发明授权
    Optical recording/reproducing apparatus capable of recording/reproducing information onto/from various types of optical recording media of different recording densities and different thicknesses 有权
    能够在不同记录密度和不同厚度的各种类型的光学记录介质上记录/再现信息的光学记录/再现设备

    公开(公告)号：US07606135B2

    公开(公告)日：2009-10-20

    申请号：US11430847

    申请日：2006-05-10

    Applicant: Jang-hoon Yoo ,  Hag-hyun Jang ,  Soo-han Park ,  Soo-jin Jeong ,  Tae-youn Heor ,  Bong-gi Kim

    Inventor： Jang-hoon Yoo ,  Hag-hyun Jang ,  Soo-han Park ,  Soo-jin Jeong ,  Tae-youn Heor ,  Bong-gi Kim

    IPC: G11B7/00

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

    Abstract: An optical recording/reproducing apparatus including a plurality of light sources emitting lights with different wavelengths for use in recording/reproducing information onto/from various types of optical recording media of different recording densities, in which at least two lights emitted from the light sources have polarization components orthogonal to each other; an objective lens for focusing a light from each of the light sources to a corresponding optical recording medium; a collimating lens disposed between the light sources and the objective lens for collimating lights from the light sources; a hologram element installed between the collimating lens and the objective lens for refracting a light emitted from one of the light sources, in which the light to be refracted is selected by wavelength and polarization components; and a photodetector receiving a light that is reflected from the corresponding optical recording medium after being focused by the objective lens.

    Abstract translation: 一种光学记录/再现装置，包括发射具有不同波长的光的多个光源，用于在/不同记录密度的各种类型的光学记录介质上记录/再现信息，其中从光源发射的至少两个光具有 极化分量彼此正交; 用于将来自每个光源的光聚焦到相应的光学记录介质的物镜; 设置在光源和物镜之间的准直透镜，用于准直来自光源的光; 安置在准直透镜和物镜之间的全息元件，用于折射从其中一个光源发射的光，其中通过波长和偏振分量选择待折射的光; 以及光接收器，其在被物镜聚焦之后接收从对应的光记录介质反射的光。

    Diffraction element and optical pick-up apparatus having the same
    62.
    发明授权
    Diffraction element and optical pick-up apparatus having the same 失效
    具有该衍射元件和光学拾取装置的衍射元件

    公开(公告)号：US07593306B2

    公开(公告)日：2009-09-22

    申请号：US11337584

    申请日：2006-01-24

    Applicant: Bong-gi Kim ,  Soo-han Park ,  Jang-hoon Yoo

    Inventor： Bong-gi Kim ,  Soo-han Park ,  Jang-hoon Yoo

    IPC: G11B7/00

    CPC classification number: G11B7/1353 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/1381

    Abstract: A diffraction element for an optical pick-up apparatus is provided that enables more accurate focusing control. The diffraction element for an optical pick-up apparatus is divided into first and second regions, each being formed with a grid pattern in which grids are repeated with a predetermined pitch P. The grid pattern in at least one of the first and second regions is tilted by a predetermined angle with respect to a virtual line VL substantially perpendicular to a division line DL that divides the first and second regions.

    Abstract translation: 提供了一种用于光学拾取装置的衍射元件，其能够进行更精确的聚焦控制。 用于光学拾取装置的衍射元件被分成第一和第二区域，每个区域形成有栅格图案，栅格图案以预定间距P重复。第一和第二区域中的至少一个区域中的栅格图案是 相对于基本上垂直于划分第一和第二区域的分割线DL的虚拟线VL倾斜预定角度。

    Optical disk writing and reading apparatus, and method thereof
    64.
    发明申请
    Optical disk writing and reading apparatus, and method thereof 审中-公开
    光盘写入读取装置及其方法

    公开(公告)号：US20060176790A1

    公开(公告)日：2006-08-10

    申请号：US11348339

    申请日：2006-02-07

    Applicant: Jang-hoon Yoo ,  Soo-han Park ,  Chun-seong Park ,  Tae-hoon Lee

    Inventor： Jang-hoon Yoo ,  Soo-han Park ,  Chun-seong Park ,  Tae-hoon Lee

    IPC: G11B5/09 ,  G11B7/00

    CPC classification number: G11B7/1369 ,  G11B7/0948 ,  G11B7/1267 ,  G11B7/1376 ,  G11B7/13927 ,  G11B2007/0013

    Abstract: An optical disk writing and reading apparatus and a method thereof is provided. The optical disk writing and reading apparatus has an optical pick-up for writing or reading data on an optical disk by using a laser light of a certain wavelength, an optical power calculation part for calculating an optical power of the laser light generated from the optical pick-up, and a micom operating the optical power calculation part by every certain time to detect the optical power of the laser light and adjusting the optical power of the laser light based on a preset optimum optical power to be optimized while writing the data on the optical disk.

    Abstract translation: 提供了一种光盘写入读取装置及其方法。 光盘写入读取装置具有通过使用一定波长的激光在光盘上写入或读取数据的光学拾取器，用于计算从光学产生的激光的光学功率的光学功率计算部 拾取器和微型计算机，每隔一定时间操作光功率计算部件，以检测激光的光功率，并且基于在将数据写入时优化的预设最佳光功率来调整激光的光功率 光盘。

    METHOD FOR DETECTING SERVO ERROR, APPARATUS THEREFOR, DISK WHICH MAINTAINS QUALITY OF SERVO ERROR SIGNAL, METHOD OF CONTROLLING SERVO OF DISK RECORDING/REPRODUCING APPARATUS, METHOD OF DETECTING TRACKING ERROR, AND METHOD OF DETECTING TILT ERROR
    66.
    发明授权
    METHOD FOR DETECTING SERVO ERROR, APPARATUS THEREFOR, DISK WHICH MAINTAINS QUALITY OF SERVO ERROR SIGNAL, METHOD OF CONTROLLING SERVO OF DISK RECORDING/REPRODUCING APPARATUS, METHOD OF DETECTING TRACKING ERROR, AND METHOD OF DETECTING TILT ERROR 有权
    用于检测服务器错误的方法，其装置，维护伺服错误信号质量的磁盘，控制磁盘记录/再现装置的服务的方法，检测跟踪错误的方法和检测倾斜错误的方法

    公开(公告)号：US06556521B1

    公开(公告)日：2003-04-29

    申请号：US09629050

    申请日：2000-07-31

    Applicant: Seong-sin Joo ,  In-sik Park ,  Byung-in Ma ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Jung-wan Ko ,  Kyung-geun Lee ,  Joong-eon Seo

    Inventor： Seong-sin Joo ,  In-sik Park ,  Byung-in Ma ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Jung-wan Ko ,  Kyung-geun Lee ,  Joong-eon Seo

    IPC: G11B700

    CPC classification number: G11B7/00718 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0941 ,  G11B7/0956

    Abstract: A method of detecting a servo error, an apparatus therefor, a disk which maintains quantity of a servo error signal, a method of controlling a servo of an apparatus for recording data on and reproducing data from a disk, a method of detecting the tracking error, and a method of detecting tilt error of the apparatus. The apparatus for recording data on and reproducing data from the disk in which a recording area is divided into sectors, each sector has a header for indicating an address, each header has a first header and a second header which are recorded to deviate from the center of the track in opposite directions, and the first header and the second header have address areas in which the addresses of sectors are recorded and synchronous signal areas in which synchronous signals for detecting the address signals recorded in the address area are recorded, includes a reproducing signal generator, a sum signal RF_sum, and a push-pull signal RF_pp from an optical signal reflected from the disk, a header area detector, a first synchronous signal level detector, a second synchronous signal level detector, and a balance calculator for calculating the balance of the magnitude Ivfo1 of the first synchronous signal detected by the first synchronous signal level detector and the magnitude Ivfo3 of the second synchronous signal detected by the second synchronous signal level detector.

    Abstract translation: 一种检测伺服误差的方法，其装置，保持伺服误差信号量的盘，控制用于从盘记录数据和从盘再现数据的装置的伺服的方法，检测跟踪误差的方法 以及检测装置的倾斜误差的方法。 用于在盘中记录数据并从其再现数据的装置，其中记录区被划分为扇区，每个扇区具有用于指示地址的标题，每个标题具有被记录为偏离中心的第一标题和第二标题 并且第一标题和第二标题具有其中记录了扇区的地址的地址区域，并且记录了用于检测记录在地址区域中的地址信号的同步信号的同步信号区域，包括再现 信号发生器，和信号RF_sum和从盘反射的光信号的推挽信号RF_pp，标题区检测器，第一同步信号电平检测器，第二同步信号电平检测器和用于计算 由第一同步信号电平检测器检测的第一同步信号的幅度Ivfo1的平衡和秒的幅度Ivfo3 由第二同步信号电平检测器检测到的同步信号。

    Optical pickup device
    67.
    发明授权
    Optical pickup device 失效
    光学拾取装置

    公开(公告)号：US5907530A

    公开(公告)日：1999-05-25

    申请号：US708200

    申请日：1996-09-06

    Applicant: Kun-ho Cho ,  Eung-ho Kim ,  Jang-hoon Yoo ,  Kyung-hwa Rim

    Inventor： Kun-ho Cho ,  Eung-ho Kim ,  Jang-hoon Yoo ,  Kyung-hwa Rim

    IPC: G02B3/10 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/09 ,  G11B7/13 ,  G11B7/135

    CPC classification number: G02B3/10 ,  G11B7/0909 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/1381 ,  G11B2007/0006 ,  G11B7/0037

    Abstract: An optical pickup device which is capable of reproducing and recording information from at least two discs having different thicknesses includes a light source, an objective lens provided along the light path from the light source facing the plane of a disc and having a predetermined effective diameter, a beam splitter provided between the objective lens and the light source, a photodetector for detecting the beam split from the light splitter and reflected from the disc, and light controller provided along the light path facing the photodetector lens for controlling the light of the intermediate region between near- and far axis regions of an incident light beam. The optical pickup device is simplified and the manufacturing cost therefor is low. Also, by reducing the spherical aberration effect for the light, discs having different thicknesses can be used in a single disc drive.

    Abstract translation: 能够从具有不同厚度的至少两个盘再现和记录信息的光学拾取装置包括光源，沿着从光源面向光盘的光源的光路设置并具有预定有效直径的物镜， 设置在物镜和光源之间的分束器，用于检测从分光器分离并从盘反射的光束的光电检测器，以及沿着面向光电检测器透镜的光路设置的光控制器，用于控制中间区域的光 在入射光束的近轴和远轴区域之间。 光拾取装置简化，制造成本低。 此外，通过减小光的球面像差效应，可以在单个盘驱动器中使用具有不同厚度的盘。

    METHOD FOR DETECTING SERVO ERROR, APPARATUS THEREFOR, DISK WHICH MAINTAINS QUALITY OF SERVO ERROR SIGNAL, METHOD OF CONTROLLING SERVO OF DISK RECORDING/REPRODUCING APPARATUS, METHOD OF DETECTING TRACKING ERROR, AND METHOD OF DETECTING TILT ERROR
    69.
    发明授权
    METHOD FOR DETECTING SERVO ERROR, APPARATUS THEREFOR, DISK WHICH MAINTAINS QUALITY OF SERVO ERROR SIGNAL, METHOD OF CONTROLLING SERVO OF DISK RECORDING/REPRODUCING APPARATUS, METHOD OF DETECTING TRACKING ERROR, AND METHOD OF DETECTING TILT ERROR 有权

    公开(公告)号：US07167424B2

    公开(公告)日：2007-01-23

    申请号：US10385472

    申请日：2003-03-12

    Applicant: Seong-sin Joo ,  In-sik Park ,  Byung-in Ma ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Jung-wan Ko ,  Kyung-geun Lee ,  Joong-eon Seo

    Inventor： Seong-sin Joo ,  In-sik Park ,  Byung-in Ma ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Jung-wan Ko ,  Kyung-geun Lee ,  Joong-eon Seo

    IPC: G11B7/00

    CPC classification number: G11B7/00718 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0941 ,  G11B7/0956

    Abstract: A method of detecting a servo error, an apparatus therefor, a disk which maintains quantity of a servo error signal, a method of controlling a servo of an apparatus for recording data on and reproducing data from a disk, a method of detecting the tracking error, and a method of detecting tilt error of the apparatus. The apparatus for recording data on and reproducing data from the disk in which a recording area is divided into sectors, each sector has a header for indicating an address, each header has a first header and a second header which are recorded to deviate from the center of the track in opposite directions, and the first header and the second header have address areas in which the addresses of sectors are recorded and synchronous signal areas in which synchronous signals for detecting the address signals recorded in the address area are recorded, includes a reproducing signal generator for generating a reproducing signal including sum signals V1 and V2 of radial pairs, a sum signal RF_sum, and a push-pull signal RF_pp from an optical signal reflected from the disk, a header area detector for generating a header area signal including a header area from the reproducing signal received from the reproducing signal generator, a first synchronous signal level detector for receiving the output of the reproducing signal generator and detecting a magnitude Ivfo1 of a first synchronous signal in the first header by being synchronized with the header area signal received from the header area detector, a second synchronous signal level detector for receiving the output of the reproducing signal generator and detecting a magnitude Ivfo3 of a second synchronous signal in the second header by being synchronized with the header area signal received from the header area detector, and a balance calculator for calculating the balance of the magnitude Ivfo1 of the first synchronous signal detected by the first synchronous signal level detector and the magnitude Ivfo3 of the second synchronous signal detected by the second synchronous signal level detector. As a result, it is possible for the recording/reproducing apparatus to stably control a servo therein and maintain an optimal recording/reproducing state since the apparatus for detecting the servo error correctly detects the servo error state of the disk.

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