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262 条记录 (耗时 0.031 秒)

    CODE-ADAPTIVE MAGNETO-OPTICAL WRITE STRATEGY
    2.
    发明公开
    CODE-ADAPTIVE MAGNETO-OPTICAL WRITE STRATEGY 有权
    CODE自适应磁光写入策略

    公开(公告)号：EP1604357A1

    公开(公告)日：2005-12-14

    申请号：EP04716675.6

    申请日：2004-03-03

    申请人： Koninklijke Philips Electronics N.V.

    发明人： VAN KESTEREN, Hans, W.

    IPC分类号： G11B7/0045 ,  G11B11/105

    CPC分类号： G11B11/1053 ,  G11B7/0045 ,  G11B11/10504 ,  G11B11/1051 ,  G11B11/10595

    摘要： The present invention relates to a method and apparatus for writing data to a storage layer of a magneto-optical recording medium using a laser beam of a predetermined power level (Pw) and a magnetic field modulated to at least two predetermined field levels (+Hw; -Hw) in accordance with said writing data. The predetermined power level and/or the at least two predetermined field levels are adjusted in dependence on a pattern of previously recorded data so as to compensate for stray field variations caused by run lengths of the previously recorded data pattern. Read-out jitter and errors can be reduced thereby.

    Information recording and reproducing device
    3.
    发明授权
    Information recording and reproducing device 失效
    数据记录和再现装置

    公开(公告)号：EP0485234B2

    公开(公告)日：2005-03-02

    申请号：EP91310364.4

    申请日：1991-11-08

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Maeda, Shigemi ,  Kojima, Kunio ,  Akiyama, Jun ,  Terashima, Shigeo ,  Numata, Tomiyuki

    IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B11/10 ,  G11B27/30 ,  G11B19/24

    CPC分类号： G11B20/10 ,  G11B7/004 ,  G11B7/08505 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10563 ,  G11B19/12 ,  G11B19/24 ,  G11B20/1403 ,  G11B21/085 ,  G11B27/327 ,  G11B2020/1087 ,  G11B2020/10888 ,  G11B2220/20 ,  G11B2220/2525

    摘要： An information recording and reproducing device has a first recording clock generation circuit (106) which generates a clock based on pre-recorded information on a magneto-optical disk (101), a second recording clock generation circuit (107) and a switching circuit (117). The switching circuit (117) selects a first recording clock (e) when recording information is of discrete information (j) and selects a second recording clock (f) when recording information is of successive information (i). Moreover, in the present device, a first reading clock (fr) is used as well as a second clock (fr min ) as a clock for reading out the reproduced data from the magneto-optical disk (1), which had been once stored in memory (15). The second reading clock having a reference frequency is generated by a second clock generation circuit (11) and is used for reading out successive information such as music information. The first reading clock in synchronisation with the reproduced signal is generated by a first reading clock generation circuit (9) and is used for reading out discrete information such as computer-use data. In addition, in the case of discrete information, it is possible to start the recording/reproducing operation immediately after an optical head reaches a desired position, thereby permitting a shortened access time.

    Recording/reproducing apparatus for domain-wall-displacement magneto-optical recording medium
    4.
    发明公开
    Recording/reproducing apparatus for domain-wall-displacement magneto-optical recording medium 审中-公开
    Aufzeichnungs- /Wiedergabegerätfürein magneto-optisches Medium mit Domainwandverschiebung

    公开(公告)号：EP1383120A2

    公开(公告)日：2004-01-21

    申请号：EP03254455.3

    申请日：2003-07-15

    申请人： CANON KABUSHIKI KAISHA

    发明人： Arisaka, Katsumi

    IPC分类号： G11B11/105

    CPC分类号： G11B11/10515 ,  G11B11/10504 ,  G11B11/10578 ,  G11B11/10584

    摘要： A recording/reproducing apparatus for a domain-wall-displacement magneto-optical recording medium with good format efficiency, capable of providing a good reproduction signal and securing a maximum recording region for a user is provided which comprises a recording circuit that starts recording of an information in a data region at a predetermined timing with a detection signal obtained in the preformat region being used as a reference, and a reproducing circuit that starts reproducing of the information recorded in the data region at a timing earlier than the predetermined timing with the detection signal being used as a reference.

    摘要翻译： 提供了一种具有良好格式效率的能够提供良好的再现信号和确保用户的最大记录区域的畴壁位移磁光记录介质的记录/再现装置，其包括记录电路，其开始记录 以预定格式区域中获得的检测信号作为基准的预定定时的数据区域中的信息，以及再现电路，其以比预定定时更早的定时开始再现记录在数据区域中的信息 信号用作参考。

    Method for retrieving data from a storage device
    10.
    发明公开
    Method for retrieving data from a storage device 失效
    用于从存储设备检索数据的方法

    公开(公告)号：EP0817189A3

    公开(公告)日：2002-03-06

    申请号：EP97202995.3

    申请日：1995-05-05

    申请人： DISCOVISION ASSOCIATES

    发明人： Kimura, Noboru ,  Yeh, Wen-Yung

    IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B11/105

    CPC分类号： G11B20/10203 ,  G11B7/0037 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/013 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10597 ,  G11B20/10009 ,  G11B20/10314 ,  G11B20/1426 ,  H03K5/003 ,  H03K5/082

    摘要： An apparatus for retrieving data stored on a medium, said apparatus comprising: means for reading said stored data and generating a signal corresponding to said stored data; a differentiation stage for processing said signal prior to partial integration thereof; a partial integrator for receiving said signal; a threshold generator connected to said partial integrator; a data generator connected to said partial integrator and to said threshold generator, said data generator including a comparator; and a feedback path from said comparator to said threshold generator.

    摘要翻译： 一种用于检索存储在介质上的数据的设备，所述设备包括：用于读取所述存储的数据并产生对应于所述存储的数据的信号的装置; 用于在其部分整合之前处理所述信号的分化阶段; 一个用于接收所述信号的部分积分器; 连接到所述部分积分器的阈值发生器; 数据发生器，连接到所述部分积分器和所述阈值发生器，所述数据发生器包括比较器; 以及从所述比较器到所述阈值生成器的反馈路径。