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    Four-axial driving actuator for optical pickup
    1.
    发明授权
    Four-axial driving actuator for optical pickup 失效
    用于光学拾取器的四轴驱动执行器

    公开(公告)号：US06724696B2

    公开(公告)日：2004-04-20

    申请号：US09938311

    申请日：2001-08-24

    申请人： Seok-jung Kim ,  Yong-hoon Lee ,  Tae-yong Doh ,  Sun-mo Kim ,  Han-kook Choi

    发明人： Seok-jung Kim ,  Yong-hoon Lee ,  Tae-yong Doh ,  Sun-mo Kim ,  Han-kook Choi

    IPC分类号： G11B700

    CPC分类号： G11B7/0932 ,  G11B7/0935 ,  G11B7/0956

    摘要： A four-axial driving actuator for an optical pickup with improved bobbin dynamic characteristics, in which the winding starting ports for a focus coil, tracking coil, and tilt coil are separate from one another, and the winding end ports thereof are combined as a common ground. The four-axial driving actuator includes: a base; a holder fixed on the base; a bobbin to which an objective lens is fixed; spring wires connected between the bobbin and the holder; and a magnetic driving unit driving the bobbin in the focus, track, or tilt direction with a focus coil, a tracking coil, and a tilt coil, wherein the magnetic driving unit comprises a circuit unit including winding starting ports for the focus coil, tracking coil, and tilt coil, and a common ground port at which winding end ports for the focus coil, tracking coil, and tilt coil are grounded, and the circuit unit applies a voltage to the tracking coil, tracking coil, and tilt coil. In the four-axial driving actuator for an optical pickup, the bobbin and the holder are connected with only four wires serving as electric wires, so that moving characteristics of the bobbin are improved and the assembly time is reduced.

    摘要翻译： 一种用于具有改进的筒管动态特性的光学拾取器的四轴驱动致动器，其中用于聚焦线圈，跟踪线圈和倾斜线圈的绕组起始端口彼此分离，并且其绕组端口被组合为公共 地面。 四轴驱动致动器包括：基座; 固定在基座上的支架; 固定有物镜的筒管; 连接在线轴和支架之间的弹簧线; 以及磁性驱动单元，其利用聚焦线圈，跟踪线圈和倾斜线圈以焦点，轨道或倾斜方向驱动线轴，其中所述磁性驱动单元包括电路单元，所述电路单元包括用于所述聚焦线圈的绕组起始端口，跟踪 线圈和倾斜线圈以及用于聚焦线圈，跟踪线圈和倾斜线圈的绕组端口接地的公共接地端口，并且电路单元向跟踪线圈，跟踪线圈和倾斜线圈施加电压。 在用于光学拾取器的四轴驱动致动器中，线轴和保持器仅用作电线的四根线连接，从而提高了线轴的移动特性，并减少了组装时间。

    Error signal detection apparatus and method for optical recording/reproducing system including comparing phases of sum signals
    3.
    发明授权
    Error signal detection apparatus and method for optical recording/reproducing system including comparing phases of sum signals 失效
    用于光学记录/再现系统的误差信号检测装置和方法，包括比较和信号的相位

    公开(公告)号：US06885621B2

    公开(公告)日：2005-04-26

    申请号：US09844697

    申请日：2001-04-30

    申请人： Byung-In Ma ,  Byoung-ho Choi ,  Chong-sam Chung ,  In-sik Park ,  Tae-yong Doh

    发明人： Byung-In Ma ,  Byoung-ho Choi ,  Chong-sam Chung ,  In-sik Park ,  Tae-yong Doh

    IPC分类号： G11B7/095 ,  G11B7/13 ,  G11B7/00

    CPC分类号： G11B7/131 ,  G11B7/0956

    摘要： An error signal detection method and apparatus for an optical recording/reproducing system. The error signal detection method includes: (a) detecting light incident through an objective lens after having been reflected and diffracted from a recording medium, as eight light portions arranged in a 2×4 matrix, including four inner light portions, and four outer light portions around the corresponding inner light portions, wherein the rows and columns of the matrix are parallel to the tangential and radial direction of the recording medium, respectively; (b) calculating a first sum signal by summing a detection signal from at least one outer light portion located in a first diagonal direction, and a detection signal from an inner light portion located in a second diagonal direction; (c) calculating second sum signal by summing a detection signal from an inner light portion located in the first diagonal direction, and a detection signal from an outer light portion located in the second diagonal direction; and (d) comparing phases of the first and second sum signals and outputting a phase comparison signal, wherein a tilt error signal is detected from the phase comparison signal. The tilt error signal detected using the method by the error signal detection apparatus has a high signal-to-noise ratio, and is less affected by detracting.

    摘要翻译： 一种用于光学记录/再现系统的误差信号检测方法和装置。 误差信号检测方法包括：（a）在从记录介质反射和衍射之后检测通过物镜入射的光，作为布置在2x4矩阵中的八个光部分，包括四个内部光部分和四个外部光部分 相应的内部光线部分，其中矩阵的行和列分别平行于记录介质的切向和径向方向; （b）通过将来自位于第一对角线方向的至少一个外部光部分的检测信号和位于第二对角线方向的内部光部分的检测信号相加来计算第一和信号; （c）通过对来自位于第一对角线方向的内部光部分的检测信号和来自位于第二对角线方向的外部光部分的检测信号求和来计算第二和信号; 以及（d）比较第一和第二和信号的相位并输出相位比较信号，其中从相位比较信号检测倾斜误差信号。 使用误差信号检测装置的方法检测的倾斜误差信号具有高的信噪比，并且受到减小的影响较小。

    OPTICAL RECORDING MEDIUM HAVING READ-ONLY STORAGE AREA AND WRITEABLE STORAGE AREA AND RECORDING/REPRODUCING APPARATUS AND METHOD THEREFOR
    5.
    发明申请
    OPTICAL RECORDING MEDIUM HAVING READ-ONLY STORAGE AREA AND WRITEABLE STORAGE AREA AND RECORDING/REPRODUCING APPARATUS AND METHOD THEREFOR 审中-公开
    具有只读存储区域和可写入存储区域的记录/记录装置及其方法的光记录介质

    公开(公告)号：US20080123491A1

    公开(公告)日：2008-05-29

    申请号：US12019115

    申请日：2008-01-24

    申请人： In-sik Park ,  Jung-wan Ko ,  Kyung-geun Lee ,  Byoung-ho Choi ,  Jung-kwon Heo ,  Byung-jun Kim ,  Tae-yong Doh

    发明人： In-sik Park ,  Jung-wan Ko ,  Kyung-geun Lee ,  Byoung-ho Choi ,  Jung-kwon Heo ,  Byung-jun Kim ,  Tae-yong Doh

    IPC分类号： G11B7/24 ,  G11B27/36

    CPC分类号： G11B27/105 ,  G11B7/00736 ,  G11B7/24038 ,  G11B20/1258 ,  G11B27/034 ,  G11B27/322 ,  G11B2020/1247 ,  G11B2020/1248 ,  G11B2220/211 ,  G11B2220/2562

    摘要： An optical recording medium having a read-only storage area and a writable storage area and a recording/reproducing apparatus and method therefore. The optical recording medium is a hybrid disc having both the read-only storage area, which is suitable for mass production of information having the same contents, and the writable storage area on which data can be recorded, updated or added at a user's option. The read-only storage area has a structure that is completely compatible with a digital versatile disc read only memory (DVD-ROM) specification, and the writable storage area is compatible with the recording/reproducing characteristics of a writable DVD specification so that an existing reproducing-only apparatus can read information from the read-only storage area, and data can be recorded in the writable storage area using an apparatus obtained by minimally changing an existing recording/reproducing apparatus while maintaining the physical recording characteristics of the existing recording/reproducing apparatus.

    摘要翻译： 因此，具有只读存储区和可写存储区以及记录/再现装置和方法的光记录介质。 光记录介质是具有适合于批量生产具有相同内容的信息的只读存储区域和可以根据用户选项记录，更新或添加数据的可写存储区域的混合盘。 只读存储区域具有与数字通用盘只读存储器（DVD-ROM）规范完全兼容的结构，并且可写存储区域与可写DVD规范的记录/再现特性兼容，使得现有 只读设备可以从只读存储区域读取信息，并且可以使用通过最小程度地改变现有记录/再现设备获得的设备将数据记录在可写存储区域中，同时保持现有记录/再现的物理记录特性 仪器。

    Defocus error signal detection apparatus having phase comparators and a matrix circuit for an optical recording/reproduction system
    7.
    发明授权
    Defocus error signal detection apparatus having phase comparators and a matrix circuit for an optical recording/reproduction system 失效
    具有相位比较器的偏振误差信号检测装置和用于光学记录/再现系统的矩阵电路

    公开(公告)号：US07095686B2

    公开(公告)日：2006-08-22

    申请号：US10839353

    申请日：2004-05-06

    申请人： Byung-in Ma ,  In-sik Park ,  Chong-sam Chung ,  Jin-hoon Jeon ,  Tae-yong Doh ,  Byoung-ho Choi

    发明人： Byung-in Ma ,  In-sik Park ,  Chong-sam Chung ,  Jin-hoon Jeon ,  Tae-yong Doh ,  Byoung-ho Choi

    IPC分类号： G11B7/00

    CPC分类号： G11B7/131 ,  G11B7/0956

    摘要： An error signal detection apparatus for an optical recording/reproducing system including a light source emitting a light beam and an objective lens focusing the light beam to form a light spot on a recording medium, the apparatus including: a photodetecting unit dividing at least a part of the light beam passed through the objective lens after being reflected/diffracted from an information stream of the recording medium into light beam portions, and detecting the light beam portions; and a signal processor detecting phase differences between detection signals from the light beam portions to detect a tangential error signal, a defocus error signal, and/or a radial tilt error signal.

    摘要翻译： 一种用于光学记录/再现系统的误差信号检测装置，包括发射光束的光源和聚焦光束以在记录介质上形成光点的物镜，该装置包括：光电检测单元，将至少一部分 在从记录介质的信息流反射/衍射之后通过物镜的光束变成光束部分，并且检测光束部分; 以及信号处理器，检测来自光束部分的检测信号之间的相位差，以检测切向误差信号，散焦误差信号和/或径向倾斜误差信号。

    Apparatus for and method of detecting defocus error signal for optical pickup and apparatus for and method of detecting seek direction
    8.
    发明授权
    Apparatus for and method of detecting defocus error signal for optical pickup and apparatus for and method of detecting seek direction 失效
    用于检测光拾取器的散焦误差信号的装置和方法以及检测寻道方向的方法

    公开(公告)号：US06977876B2

    公开(公告)日：2005-12-20

    申请号：US09895878

    申请日：2001-07-02

    申请人： Byung-in Ma ,  In-sik Park ,  Chong-sam Chung ,  Jin-hoon Jeon ,  Tae-yong Doh ,  Byoung-ho Choi

    发明人： Byung-in Ma ,  In-sik Park ,  Chong-sam Chung ,  Jin-hoon Jeon ,  Tae-yong Doh ,  Byoung-ho Choi

    IPC分类号： G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B7/13 ,  G11B7/00

    CPC分类号： G11B7/131 ,  G11B7/00718 ,  G11B7/08505 ,  G11B7/0901 ,  G11B7/0943

    摘要： An apparatus for and a method of detecting a defocus error signal. First, second and third light receiving regions of a photodetector are arranged in a radial direction of a recording medium to independently perform photoelectric conversion with respect to incident light which is reflected/diffracted by the recording medium. A subtractor subtracts a sum signal of detection signals from the first and third light receiving regions and a detection signal of the second light receiving region to output a defocus error signal, to detect defocus and/or a change in thickness of the recording medium. The defocus error signal and a push-pull tracking error signal are compared in a state in which a predetermined amount of defocus is applied to a light spot to detect a seek direction of the recording medium having a land/groove structure.

    摘要翻译： 一种用于检测散焦误差信号的装置和方法。 首先，光电检测器的第二和第三光接收区域沿记录介质的径向布置，以独立地对由记录介质反射/衍射的入射光进行光电转换。 减法器从第一和第三光接收区域和第二光接收区域的检测信号中减去检测信号的和信号，以输出散焦误差信号，以检测记录介质的散焦和/或厚度变化。 在将预定量的散焦加到光点以检测具有岸台/槽结构的记录介质的寻道方向的状态下，比较散焦误差信号和推挽跟踪误差信号。