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    Method and apparatus to generate a monitoring signal for an optical recording/reproducing system
    11.
    发明授权
    Method and apparatus to generate a monitoring signal for an optical recording/reproducing system 失效
    产生用于光学记录/再现系统的监视信号的方法和装置

    公开(公告)号：US06801486B2

    公开(公告)日：2004-10-05

    申请号：US09993911

    申请日：2001-11-27

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

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

    IPC分类号： G11B700

    CPC分类号： G11B7/131 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0956

    摘要： At least part of a light beam reflected from an optical disc is divided into first through fourth light areas in directions corresponding to the radial and tangential directions of the disc, and first through fourth detection signals are output from the light areas. The first through fourth light areas are ordered counterclockwise or clockwise. A phase difference is obtained between a first sum signal obtained by summing the first and third detection signals and a second sum signal obtained by summing the second and fourth detection signals and first and second phase difference signals are output based upon the phase difference. The phase difference signals are summed to generate an optical recording/reproducing system monitoring signal for system adjustment even for high density optical discs, the monitoring signal being proportional to the degrees of a radial tilt, tangential tilt, a defocus, or a detrack.

    摘要翻译： 从光盘反射的光束的至少一部分在与盘的径向和切线方向对应的方向上被划分为第一至第四光区域，并且从光区域输出第一至第四检测信号。 第一至第四个光区按逆时针或顺时针方向排列。 在通过对第一和第三检测信号进行求和获得的第一和信号和通过对第二和第四检测信号求和获得的第二和信号之间获得相位差，并且基于相位差输出第一和第二相位差信号。 相位差信号被相加以生成用于系统调整的光学记录/再现系统监视信号，即使对于高密度光盘，监视信号与径向倾斜度，切向倾斜度，散焦或脱轨成正比。

    Error signal detection apparatus and reproduction signal detection apparatus for optical recording/reproducing system and method therefor
    12.
    发明授权
    Error signal detection apparatus and reproduction signal detection apparatus for optical recording/reproducing system and method therefor 有权
    用于光学记录/再现系统的误差信号检测装置和再现信号检测装置及其方法

    公开(公告)号：US06507544B1

    公开(公告)日：2003-01-14

    申请号：US09663839

    申请日：2000-09-15

    申请人： Byung-in Ma ,  Byung-ho Choi ,  Chong-sam Chung ,  In-sik Park ,  Tae-yong Doh ,  Joong-eon Seo

    发明人： Byung-in Ma ,  Byung-ho Choi ,  Chong-sam Chung ,  In-sik Park ,  Tae-yong Doh ,  Joong-eon Seo

    IPC分类号： G11B700

    CPC分类号： G11B7/0906 ,  G11B7/0956 ,  G11B7/131

    摘要： An error signal detection apparatus for an optical recording/reproducing system which detects a tilt error signal and/or tracking error signal, based on the phase characteristics of light reflected and diffracted from a recording medium, and a method therefor. The error signal detection apparatus includes multiple photodetectors and a circuit unit for detecting an error signal by processing detection signals generated by each photodetector The the photodetectors are arranged in a matrix wherein a row or column of the matrix is parallel to a direction corresponding to a direction of an information stream on the recording medium. A circuit unit compares the phases of the detection signals of the inner and/or outer light receiving portions arranged in the same row or of detection signals from diagonal positions on the matrix to output at least one of a tilt error signal and a tracking error signal based on the phase comparison.

    摘要翻译： 一种用于根据从记录介质反射和衍射的光的相位特性来检测倾斜误差信号和/或跟踪误差信号的光学记录/再现系统的误差信号检测装置及其方法。 误差信号检测装置包括多个光电检测器和用于通过处理由每个光电检测器产生的检测信号来检测误差信号的电路单元。光电检测器以矩阵排列，其中矩阵的行或列平行于与方向对应的方向 在记录介质上的信息流。 电路单元将布置在同一行中的内部和/或外部光接收部分的检测信号的相位或来自矩阵上的对角线位置的检测信号的相位相比较，以输出倾斜误差信号和跟踪误差信号中的至少一个 基于相位比较。

    Method of detecting track cross signal of optical disc recording/reproducing device and apparatus therefor
    13.
    发明授权
    Method of detecting track cross signal of optical disc recording/reproducing device and apparatus therefor 失效
    检测光盘记录/再现装置的轨道交叉信号的方法及其装置

    公开(公告)号：US06400662B1

    公开(公告)日：2002-06-04

    申请号：US09660469

    申请日：2000-09-12

    申请人： Byoung-ho Choi ,  Jung-wan Ko ,  Byung-in Ma ,  Tae-yong Doh ,  Tae-yeon Lee ,  In-sik Park

    发明人： Byoung-ho Choi ,  Jung-wan Ko ,  Byung-in Ma ,  Tae-yong Doh ,  Tae-yeon Lee ,  In-sik Park

    IPC分类号： G11B700

    CPC分类号： G11B7/131 ,  G11B7/08517 ,  G11B7/08541

    摘要： An optical recording/reproducing apparatus for determining a direction in which an optical pick-up moves, and detecting a track cross signal. The track cross signal is useful as a basis of determining tracking pull-in after searching a track. In the present track cross signal detecting method, the track cross signal is obtained by binarizing the envelope of an RF signal RF0 obtained by subtracting some light receiving signals generated by some light receiving devices in the radial direction from other light receiving signals generated by other light receiving devices in the radial direction. The light receiving signals originate from a photodetector, divided into two or more sections in the radial direction. The track cross signal detecting method is especially useful for generating the track cross signal when the track pitch is smaller than the size of an optical spot, the signal being less affected by crosstalk caused by an adjacent track.

    摘要翻译： 一种光学记录/再现装置，用于确定光学拾取器移动的方向，并且检测轨迹交叉信号。 轨道交叉信号作为在搜索轨道之后确定跟踪拉入的基础是有用的。 在本轨道交叉信号检测方法中，轨道交叉信号是通过将通过从其他光产生的其他光接收信号中减去由一些光接收装置产生的一些光接收信号而获得的RF信号RF0的包络线二值化获得的， 沿径向接收装置。 光接收信号源于光电检测器，在径向上分成两个或更多个部分。 当轨道间距小于光点的大小时，轨道交叉信号检测方法对于产生轨道交叉信号特别有用，该信号较少受到由相邻轨道引起的串扰的影响。

    OPTICAL RECORDING MEDIUM HAVING READ-ONLY STORAGE AREA AND WRITEABLE STORAGE AREA AND RECORDING/REPRODUCING APPARATUS AND METHOD THEREFOR
    15.
    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。