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    Focus control for optical scanner
    3.
    发明公开
    Focus control for optical scanner 有权
    Fokussteuerungfüreinen optischen扫描仪

    公开(公告)号：EP1717801A2

    公开(公告)日：2006-11-02

    申请号：EP06300252.1

    申请日：2006-03-21

    申请人： Thomson Licensing S.A.

    发明人： Fechner, Manfred

    IPC分类号： G11B7/09

    CPC分类号： G11B7/094 ,  G11B7/0908 ,  G11B7/0945 ,  G11B7/095 ,  G11B7/0956

    摘要： The present invention relates to a method for correcting the operating point of a focus control loop (12) for a scanner for optical storage media (6). According to the invention, the method comprises the steps of:
    - extracting (20) from a focus error signal (FE) a signal component caused by verticle wobble of the optical storage medium (6);
    - integrating (22) the extracted signal component; and
    - correcting (23) the operating point with the aid of the integrated signal.

    摘要翻译： 本发明涉及一种用于校正用于光学存储介质（6）的扫描器的聚焦控制回路（12）的操作点的方法。 根据本发明，该方法包括以下步骤： - 从聚焦误差信号（FE）提取由光存储介质（6）的垂直摆动引起的信号分量（20）; - 整合（22）所提取的信号分量; 并借助于积分信号校正（23）工作点。

    Apparatus and method for controlling reproduction speed of an optical disk
    4.
    发明公开
    Apparatus and method for controlling reproduction speed of an optical disk 有权
    装置和方法用于控制光盘的再现速度

    公开(公告)号：EP1647984A1

    公开(公告)日：2006-04-19

    申请号：EP06000121.1

    申请日：2000-03-29

    申请人： LG ELECTRONICS INC.

    发明人： Jeong, Hong Jo

    IPC分类号： G11B19/28 ,  G11B7/095

    CPC分类号： G11B19/28 ,  G11B7/095 ,  G11B7/0953

    摘要： This invention provides method and apparatus for controlling reproduction speed of an optical disk, which detects the magnitude of a disk vibration after initial operation of an optical disk and adjusts the disk rotation speed based upon the vibration magnitude. The method according to this invention comprises the steps of rotating an installed optical disk; detecting the quantity of signal derived from tracking error signals which are combined from signals reproduced from.the optical disk when the rotation speed reaches to a predetermined speed; and deciding whether to increase the rotation speed above the predetermined speed based upon the detected quantity of the signal. This invention is able to reproduce an optical disk at the possible maximum speed within allowable speed limit through detecting accurate disk vibration magnitude at the initial operation stage and adjusting the reproduction speed to higher speed.

    摘要翻译： 本发明提供一种用于控制光盘，其中光盘的初始操作之后和bestimmt基于振动幅度的盘旋转速度检测盘的振动的大小的再现速度的方法和装置。 该方法雅丁到本发明包括旋转安装到光盘的步骤; 检测信号从跟踪哪些分别从信号组合误差信号导出的量再现院校：光盘当转速达到预定速度; 并决定是否增加基于所述信号的所检测到的预定数量以上的速度的旋转速度。 本发明能够通过在初始操作阶段检测精确的磁盘振动幅度并调节再现速度更高的速度来再现光盘上的可允许速度范围内的最大可能速度。

    OPTICAL HEAD
    6.
    发明公开
    OPTICAL HEAD 失效
    光头

    公开(公告)号：EP0882292A1

    公开(公告)日：1998-12-09

    申请号：EP96935463.0

    申请日：1996-10-28

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： NAGATA, Takayuki ,  ARAI, Akihiro ,  NAKAMURA, Toru ,  HAYASHI, Takao

    IPC分类号： G11B7

    CPC分类号： G11B7/1381 ,  G11B7/0903 ,  G11B7/095 ,  G11B7/13

    摘要： An optical head comprises a photodetector (8) having divided photosensitive areas to detect light (13) reflected from an optical disk (7), means (10, 11, 12) for obtaining tracking error signal by operating signals from the photosensitive areas. The photodetector (8) has a first division line (9a) parallel to an information track on the optical disk and second and third division lines (9b, 9c) perpendicular to the first division line (9a) and symmetrical to the optical axis. Further, a light-shielding area (8i) for shielding a part of the reflected light between the division lines (9b and 9c). The signals are operated to reduce offset of the tracking error signal due to shift of object lens and tilt of the optical disk. Then, the optical head has small offset of tracking error signal with a simple structure as prior art optical head of push-pull technique.

    OPTICAL PICKUP DEVICE
    7.
    发明公开
    OPTICAL PICKUP DEVICE 失效
    光学拾取装置

    公开(公告)号：EP0749116A1

    公开(公告)日：1996-12-18

    申请号：EP95942319.5

    申请日：1995-12-28

    申请人： SONY CORPORATION

    发明人： KATO, Yoshiaki ,  FUKUMOTO, Atsushi

    IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B7/135

    CPC分类号： G11B7/131 ,  G11B7/0037 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/0912 ,  G11B7/0943 ,  G11B7/095 ,  G11B7/133 ,  G11B7/1353 ,  G11B2007/0013

    摘要： An optical pick-up device according to the present invention is adapted to reproduce an information signal recorded on a multi-layer optical disc having a plurality of information signal storage layers on which the desired information signal is stored. The optical pick-up device includes a light source for emitting a light beam, an optical means for dividing the light beam emitted from the light source into three separate beams composed of a main beam and first and second side beams and radiating these beams onto the multi-layer optical disc, a main beam-receiving member for receiving the main beam reflected from the multi-layer optical disc, first and second side beam-receiving members for receiving the first and second side beams reflected from the multi-layer optical disc, respectively, and a means for outputting a detection signal indicative of a quantity of light in response to the light quantity received by the main beam-receiving member, the first side beam-receiving member and the second side beam-receiving member. The first side beam-receiving member and the second side beam-receiving member are disposed spaced by a given distance apart from the main beam-receiving member and located at positions where no interference with the main beam reflected from an unfocused information signal storage layer of the multi-layer optical disc, is caused, so that the light beam reflected from the unfocused information signal storage layer of the multi-layer optical disc, does not give any influence on function of the device, and a desired information signal can be accurately reproduced from the intended information signal storage layer on which the information signal is recorded.

    摘要翻译： 根据本发明的光学拾取装置适于再现记录在具有多个信息信号存储层的多层光盘上的信息信号，其上存储有所需的信息信号。 该光学拾取装置包括用于发射光束的光源，用于将从光源发射的光束分成由主光束和第一和第二侧光束组成的三个单独光束并将这些光束辐射到 多层光盘，用于接收从多层光盘反射的主光束的主光束接收元件，用于接收从多层光盘反射的第一和第二副光束的第一和第二副光束接收元件 以及用于响应由主光束接收部件，第一侧光束接收部件和第二侧光
    束接收部件接收到的光量而输出指示光量的检测信号的装置。 第一侧光束接收部件和第二侧光束接收部件与主光束接收部件隔开给定的距离设置，并且位于与未聚焦的信息信号存储层反射的主光束不干涉的位置处 引起多层光盘，使得从多层光盘的未聚焦信息信号存储层反射的光束不会对该装置的功能产生任何影响，并且所需的信息信号可以准确地 从其上记录信息信号的预期信息信号存储层再现。

    OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD AND INFORMATION RECORDING SYSTEM
    9.
    发明公开
    OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD AND INFORMATION RECORDING SYSTEM 审中-公开
    光信息记录介质，信息记录方法与信息记录系统

    公开(公告)号：EP1965376A4

    公开(公告)日：2009-02-04

    申请号：EP06833737

    申请日：2006-11-30

    申请人： FUJIFILM CORP

    发明人： USAMI YOSHIHISA

    IPC分类号： G11B7/0065 ,  G03H1/04 ,  G03H1/26 ,  G11B7/24

    CPC分类号： G11B7/24044 ,  G03H1/0252 ,  G03H2250/32 ,  G03H2250/34 ,  G03H2250/42 ,  G11B7/00781 ,  G11B7/095 ,  G11B7/24038 ,  G11B7/24079

    摘要： An optical information recording medium (12) is provided with a substrate (60) having a pregroove (78) formed on one main plane; a reflecting layer (62) arranged on the one main plane of the substrate (60) and reflecting an access controlling laser beam (20); a selective reflecting layer (70) arranged on the reflecting layer (62), transmitting the access controlling laser beam (28) and reflecting a recording laser beam (20); a recording layer (74) arranged on the selective reflecting layer (70) for having information recorded thereon by the recording laser beam (20); and a reflection preventing layer (66) arranged on the recoding layer (74). On the substrate (60), a dummy groove (80) having a shape similar to that of the pregroove (78) is formed on forming regions (98a, 98b) adjacent to an effective access region (82) on the one main plane.

    Focus control for optical scanner
    10.
    发明公开
    Focus control for optical scanner 有权
    聚焦控制的光学扫描器

    公开(公告)号：EP1717801A3

    公开(公告)日：2007-11-28

    申请号：EP06300252.1

    申请日：2006-03-21

    申请人： Thomson Licensing S.A.

    发明人： Fechner, Manfred

    IPC分类号： G11B7/09

    CPC分类号： G11B7/094 ,  G11B7/0908 ,  G11B7/0945 ,  G11B7/095 ,  G11B7/0956

    摘要： The present invention relates to a method for correcting the operating point of a focus control loop (12) for a scanner for optical storage media (6). According to the invention, the method comprises the steps of:
    - extracting (20) from a focus error signal (FE) a signal component caused by verticle wobble of the optical storage medium (6);
    - integrating (22) the extracted signal component; and
    - correcting (23) the operating point with the aid of the integrated signal.