Device for reading or writing optical recording media
    2.
    发明公开
    Device for reading or writing optical recording media 有权
    一种用于读取或写入到光学记录介质

    公开(公告)号:EP1109165A2

    公开(公告)日:2001-06-20

    申请号:EP00126256.7

    申请日:2000-12-01

    IPC分类号: G11B7/135

    摘要: The present invention relates to a device for reading from and/or writing to optical recording media (6), which has a light source (1) for producing a scanning beam (2), a photodetector (7) for detecting the scanning beam (2) reflected by the recording medium (6) and a semi-transparent mirror (3) arranged in the beam path for directing the scanning beam (2) onto the recording medium (6) and the reflected scanning beam (2) onto the photodetector (7).
    The object of the invention is to improve a device of this type, in particular also with regard to reducing the production costs.
    This object is achieved by the semi-transparent mirror (3) being a plane-parallel plate with a layered structure, a partially reflective layer (10) being arranged between two small carrier plates (11, 12).

    摘要翻译: 本发明涉及一种设备,用于读和/或写其中有一个光源(1),用于检测所述扫描光束产生扫描光束(2),光电检测器(7)的光记录介质(6)( 3)布置在光束路径2)由记录介质(6)和一个半透明反射镜反射(对于(2)到记录介质(6)和所述反射的扫描光束(2)到光电检测器引导扫描光束 (7)。 本发明的目的是改进这种类型的设备,特别是这样对于削减制造成本。 此目的通过半透明镜(3)是一个平面平行板具有层状结构来实现,部分反射层(10)的两个小载体板(11,12)之间布置。

    Device for reading from and/or writing to optical recording media
    3.
    发明公开
    Device for reading from and/or writing to optical recording media 有权
    装置,用于读取一个和/或写入到光学记录介质

    公开(公告)号:EP0939397A3

    公开(公告)日:2000-04-12

    申请号:EP99102972.9

    申请日:1999-02-15

    摘要: The present invention relates to a device for reading from and/or writing to optical recording media having a scanning unit (1), which is equipped with at least two detector units (10, 20) each having a plurality of detector elements (11-18, 21-28), and also an evaluation unit (2), each of the detector elements (11-18, 21-28) being connected to the evaluation unit (2) by means of a line (31-38). The object of the present invention is to simplify the structure of a device of this type. This object is achieved by virtue of the fact that detector elements (11, 21; 12, 22, ..., 18, 28) of different detector units (10, 20) are each connected to the evaluation unit (2) via a single line (31; 32; ...; 38). The device according to the invention is advantageously a device which can read from and/or write to not only optical recording media which correspond to a CD standard but also those which correspond to a DVD standard.

    Magneto-optical recording or reproducing device
    4.
    发明公开
    Magneto-optical recording or reproducing device 有权
    磁光记录或再现设备

    公开(公告)号:EP0924695A3

    公开(公告)日:1999-08-11

    申请号:EP98123027.9

    申请日:1998-12-07

    发明人: Zucker, Friedhelm

    IPC分类号: G11B11/10

    摘要: The invention relates to a magneto-optic recording or reproducing unit having an erasing facility for information or data recorded on a magneto-optic recording medium. According to the invention, the erasing facility is formed by an erasing magnet (LM) having a field strength sufficient to initialize the magneto-optic recording medium without the assistance of a laser and/or an optical scanning unit. The field of application of the invention relates to magneto-optic recording or reproducing units.

    摘要翻译: 本发明涉及一种具有用于记录在磁光记录介质上的信息或数据的擦除设备的磁光记录或再现单元。 根据本发明,擦除设备由具有足以在没有激光器和/或光学扫描单元的辅助的情况下初始化磁光记录介质的场强的擦除磁体(LM)形成。 本发明的应用领域涉及磁光记录或再现单元。

    Magneto-optical recording or reproducing device
    5.
    发明公开
    Magneto-optical recording or reproducing device 有权
    Magneto-optisches Aufnahme-wderWiedergabegerät

    公开(公告)号:EP0924695A2

    公开(公告)日:1999-06-23

    申请号:EP98123027.9

    申请日:1998-12-07

    发明人: Zucker, Friedhelm

    IPC分类号: G11B11/10

    摘要: The invention relates to a magneto-optic recording or reproducing unit having an erasing facility for information or data recorded on a magneto-optic recording medium.
    According to the invention, the erasing facility is formed by an erasing magnet (LM) having a field strength sufficient to initialize the magneto-optic recording medium without the assistance of a laser and/or an optical scanning unit.
    The field of application of the invention relates to magneto-optic recording or reproducing units.

    摘要翻译: 本发明涉及具有用于记录在磁光记录介质上的信息或数据的擦除设备的磁光记录或再现单元。 根据本发明,擦除设备由具有足以在没有激光和/或光学扫描单元的辅助下初始化磁光记录介质的场强的擦除磁体(LM)形成。 本发明的应用领域涉及磁光记录或再现单元。

    Device for reading or writing optical recording media
    7.
    发明公开
    Device for reading or writing optical recording media 有权
    一种用于读取或写入到光学记录介质

    公开(公告)号:EP1109165A3

    公开(公告)日:2004-05-19

    申请号:EP00126256.7

    申请日:2000-12-01

    IPC分类号: G11B7/135 G02B5/18

    摘要: The present invention relates to a device for reading from and/or writing to optical recording media (6), which has a light source (1) for producing a scanning beam (2), a photodetector (7) for detecting the scanning beam (2) reflected by the recording medium (6) and a semi-transparent mirror (3) arranged in the beam path for directing the scanning beam (2) onto the recording medium (6) and the reflected scanning beam (2) onto the photodetector (7). The object of the invention is to improve a device of this type, in particular also with regard to reducing the production costs. This object is achieved by the semi-transparent mirror (3) being a plane-parallel plate with a layered structure, a partially reflective layer (10) being arranged between two small carrier plates (11, 12).

    Gerät zum Beschreiben und/oder Lesen optischer Aufzeichnungsträger unterschiedlichen Aufbaus
    9.
    发明公开
    Gerät zum Beschreiben und/oder Lesen optischer Aufzeichnungsträger unterschiedlichen Aufbaus 失效
    设备写入和/或读取不同的结构的光学记录载体

    公开(公告)号:EP1126447A3

    公开(公告)日:2002-04-03

    申请号:EP01110289.4

    申请日:1997-02-27

    摘要: Die vorliegende Erfindung betrifft ein Gerät zum Beschreiben und/oder Lesen optischer Aufzeichnungsträger (AT) unterschiedlichen Aufbaus, beispielsweise ein Gerät, das sowohl zum Beschreiben/Lesen von Digitalen Videodisks DVD als auch von herkömmlichen CDs geeignet ist. Es ist vorgesehen, während des Heranfahrens der Objektivlinse (OL) an den Aufzeichnungsträger (AT), das von diesem reflektierte Licht zu detektieren, auszuwerten und daraus die Art des optischen Aufzeichnungsträgers zu bestimmen. Die Erfindung ist auf dem Gebiet der Geräte zum Beschreiben und/oder Lesen optischer Aufzeichnungsträger (AT) unterschiedlichen Aufbaus anwendbar, beispielsweise bei Geräten, die sowohl zum Beschreiben/Lesen von Digitalen Videodisks DVD als auch von herkömmlichen CDs geeignet sind.

    摘要翻译: 用于光盘的读写系统[AT]具有通过光分路器[PBS]和透镜系统[CL,WL,OL]指向的激光二极管[LD]输出,并且在盘上。 的光信号被反射从盘上的轨道后面。 反射信号的性质将取决于曲目[F1,F2]其中取决于记录的类型的深度。 光信号通过棱镜并到达光电检测器[PD]反射。 检测单元[AE]指示出错,以及控制器[SE] bestimmt焦点以适应光盘。 -

    Input signal amplifier
    10.
    发明公开
    Input signal amplifier 失效
    Eingangssignalverstärker

    公开(公告)号:EP0840299A1

    公开(公告)日:1998-05-06

    申请号:EP97118007.0

    申请日:1997-10-17

    IPC分类号: G11B7/09 G11B21/10

    摘要: For the servo control loop of a reproduction or recording device for optical recording media, it is necessary to control the gain of the input signal amplifier, since otherwise an error signal is not amplified in a correspondingly uniform manner and, on account of changes in the reflectivity of an optical disk or the like, the scanning unit is not controlled correctly. In order to control the gain of the input signal amplifier, the digitized summation signal of the optical information signal is used, the MSB switching a smallest feedback resistor in and out and the LSB switching a largest feedback resistor in and out. In this case, each bit of the digitized summation signal is assigned a feedback resistor, and the resistors preferably form an ascending sequence from the MSB to the LSB. The resistances of successive resistors preferably differ from one another by a factor of 2. This achieves a reciprocal response of the gain with regard to the input signal.

    摘要翻译: 对于用于光学记录介质的再现或记录装置的伺服控制回路,需要控制输入信号放大器的增益,否则误差信号不会以相应的均匀方式放大,并且由于 光盘等的反射率不能正确地控制扫描单元。 为了控制输入信号放大器的增益,使用光信息信号的数字化求和信号,MSB切换最小反馈电阻的输入和输出,LSB切换最大的反馈电阻输入和输出。 在这种情况下,数字化求和信号的每一位被分配反馈电阻,并且电阻优选地形成从MSB到LSB的升序。 连续电阻器的电阻优选彼此相差2倍。这实现了关于输入信号的增益的互逆响应。