Information recording and/or reproducing apparatus
    36.
    发明公开
    Information recording and/or reproducing apparatus 失效
    信息记录和/或再现装置

    公开(公告)号:EP0829864A2

    公开(公告)日:1998-03-18

    申请号:EP97308211.8

    申请日:1995-11-10

    IPC分类号: G11B7/135 G11B7/095

    摘要: An information recording/reproducing apparatus for recording and/or reproducing information on and/or from an optical recording medium comprises a light source (50), at least two objective lenses (4,5) corresponding to at least two kinds of optical recording media (1,2) having different thicknesses of protective layer, respectively, a holder (6) for supporting these objective lenses (4,5), selection means for selecting one of these objective lenses in accordance with that one of the optical recording media (1,2) to be read, the light of the light source (50) being directed onto that optical recording medium (1,2) through the objective lens (4,5) selected by the selection means, thereby performing recording and/or reproducing of the information.

    摘要翻译: 一种用于在光学记录介质上和/或从光学记录介质记录和/或再现信息的信息记录/再现设备包括光源(50),至少两个物镜(4,5),对应于至少两种光学记录介质 (1,2)分别具有不同厚度的保护层,用于支撑这些物镜(4,5)的支架(6),用于根据光学记录介质中的一个选择这些物镜中的一个的选择装置( 1,2)被读取时,光源(50)的光通过由选择装置选择的物镜(4,5)被引导到该光学记录介质(1,2)上,从而执行记录和/或 再现信息。

    Optical recording medium and optical recording apparatus
    37.
    发明公开
    Optical recording medium and optical recording apparatus 失效
    Optisches Aufzeichnungsmedium undGerätzur optischen Aufzeichnung。

    公开(公告)号:EP0457536A1

    公开(公告)日:1991-11-21

    申请号:EP91304289.1

    申请日:1991-05-13

    IPC分类号: G11B7/09

    摘要: Disclosed herein is an optical recording medium having guide grooves (101) which are parallel or substantially parallel, tracks formed among the guide grooves, offset-compensating areas (107) spaced apart in lengthwise direction of the guide grooves and separating each of the tracks into portions, first pits (103) formed in each portion of each of the tracks and arranged in a center line of the track, and second pits (104) formed in the offset-compensating areas and extending in the center line of the tracks. Also disclosed herein is an optical recording apparatus for applying a light beam to the optical recording medium as defined above, thereby to record data on the medium and reproduce data there from. In the apparatus, two tracking error signals, which represent the distance between the center of a light spot formed on the medium and the center line of a target track, are generated form diffracted light beams from any one of the guide grooves and the offset-compensating area adjacent to the guide groove. The first tracking error signal is corrected in accordance with the second tracking signal, and the position of the light spot is controlled in accordance with the first tracking error signal thus corrected.

    摘要翻译: 这里公开了一种光记录介质,其具有平行或基本平行的引导槽(101),导向槽之间形成的轨道,在引导槽的长度方向上间隔开的偏移补偿区域(107),并将每个轨道分成 形成在每个轨道的每个部分中并且布置在轨道的中心线中的第一凹坑(103)和形成在偏移补偿区域中并在轨道的中心线延伸的第二凹坑(104)。 本文还公开了一种用于将光束施加到如上所述的光学记录介质的光学记录装置,从而将数据记录在介质上并在其上再现数据。 在该装置中,形成代表在介质上形成的光点的中心与目标轨道的中心线之间的距离的两个跟踪误差信号,由衍射光束从任何一个引导槽和偏移 - 补偿区域与引导槽相邻。 根据第二跟踪信号来校正第一跟踪误差信号,并且根据如此校正的第一跟踪误差信号来控制光点的位置。

    OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD AND INFORMATION RECORDING SYSTEM
    39.
    发明公开
    OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD AND INFORMATION RECORDING SYSTEM 审中-公开
    最新消息信息报告,新闻稿,信息资料

    公开(公告)号:EP1965376A1

    公开(公告)日:2008-09-03

    申请号:EP06833737.7

    申请日:2006-11-30

    发明人: USAMI, Yoshihisa

    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.

    摘要翻译: 光学信息记录介质(12)具有基板(60),该基板(60)具有形成在一个主平面上的预凹槽(78) 布置在所述基板的一个主平面上并反射访问控制激光束(20)的反射层(62); 布置在所述反射层(62)上的选择性反射层(70),传送所述存取控制激光束(28)并反射记录激光束(20); 布置在所述选择反射层(70)上用于通过记录激光束(20)记录信息的记录层(74); 和布置在记录层(74)上的防反射层(66)。 在基板(60)上,在与一个主平面上的有效接近区域(82)相邻的形成区域(98a,98b)上形成具有与预槽(78)相似形状的虚拟槽(80)。