利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

103 条记录 (耗时 0.031 秒)

    Optical disk
    28.
    发明公开
    Optical disk 失效
    光盘

    公开(公告)号：EP0981130A2

    公开(公告)日：2000-02-23

    申请号：EP99121834.8

    申请日：1997-04-09

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Koishi, Kenji ,  Ohara, Shunji ,  Ishida, Takashi ,  Satoh, Isao ,  Takemura, Yoshinari ,  Gushima, Toyoji ,  Deguchi, Hironori ,  Mitui, Yoshitaka

    IPC分类号： G11B7/00 ,  G11B7/007

    CPC分类号： G11B7/24085 ,  G11B7/0053 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/0906 ,  G11B20/1426 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/1259 ,  G11B2220/2562

    摘要： An optical disk has a rewritable first recording area and a read-only second recording area. The first recording area includes first tracks composed of groove tracks and land tracks formed on an optical disk substrate alternately in a spiral or concentric shape. Each of the first tracks is divided into a plurality of first sectors, and each of the first sectors includes a first header region having identification data for identifying the first sector and a first data region for recording user data by forming recording marks by changing optical characteristics of a recording surface. The second data recording area includes second tracks formed with physical concave and convex shaped pit rows arranged on the optical disk substrate in a spiral or concentric shape. Each of the second tracks is divided into a plurality of second sectors, and each of the second sectors includes a second header region having identification data for identifying the second sector and a second data region having read-only data recorded as the pit rows. The first header region includes a physical concave and convex shaped first pit row. Each pit of the first pit row has a width in a radial direction of the optical disk substantially equal to a width of the groove track and is wobbled outward or inward from a center line of the groove track by about a quarter of a pitch of the groove track. The second header region includes a physical concave and convex shaped second pit row. Each pit of the second pit row has a width in the radial direction of the optical disk smaller than the width of the groove track and is formed substantially along the center line of the second track.

    摘要翻译： 光盘具有可重写的第一记录区域和只读的第二记录区域。 第一记录区域包括由交替地以螺旋或同心形状形成在光盘基片上的凹槽轨道和平台轨道组成的第一轨道。 每个第一轨道被分成多个第一扇区，并且每个第一扇区包括具有用于识别第一扇区的识别数据的第一头标区和用于通过改变光学特性形成记录标记来记录用户数据的第一数据区 的记录表面。 第二数据记录区域包括第二轨道，该第二轨道以螺旋或同心形状布置在光盘基板上的物理凹凸形凹坑行形成。 每个第二轨道被分成多个第二扇区，并且每个第二扇区包括具有用于识别第二扇区的识别数据的第二头标区和具有作为凹坑行记录的只读数据的第二数据区。 第一头部区域包括物理凹凸形状的第一凹坑排。 第一凹坑列的每个凹坑在光盘的径向方向上的宽度基本上等于凹槽轨道的宽度，并且从凹槽轨道的中心线向外或向内摆动大约四分之一 凹槽轨道。 第二头部区域包括物理凹凸形状的第二凹坑排。 第二凹坑列的每个凹坑在光盘的径向方向上的宽度小于凹槽轨道的宽度，并且基本上沿着第二轨道的中心线形成。

    Optical recording and reproducing apparatus
    29.
    发明公开
    Optical recording and reproducing apparatus 失效
    Optisches Aufzeichnungs-undWiedergabegerät。

    公开(公告)号：EP0249996A1

    公开(公告)日：1987-12-23

    申请号：EP87108833.2

    申请日：1987-06-19

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Koishi, Kenji ,  Matsuo, Tamotsu

    IPC分类号： G11B7/00 ,  G11B27/36

    CPC分类号： G11B19/04 ,  G11B7/004 ,  G11B27/36

    摘要： An optical recording and reproducing apparatus which records information on the optical disc (1) to reproduce the information from the optical disc (1). It is necessary to detect the abnormal condition, when the abnormal condition has been caused while the information is recording on the optical disc (1), to change the optical power level of the laser light source (21) into the non-recording condition so that the abnormal data may not be recorded on the optical disc (1). The track skipping which is not intended, unnecessary during the recording operation, the condition which is not the record power with the record power level being set, the motor (20) which is rotating the optical disc (1) causes the abnormal rotation, are the abnormal condition during the recording operation. The diagnosis function is important which confirms the positive operation of the abnormal condition detection during the recording operation, and of the write protection, because the abnormal condition during the recording operation considerably lowers the reliability of the data recorded on the optical disc (1).

    摘要翻译： 在光盘（1）上记录信息以从光盘（1）再现信息的光学记录和再现装置。 当在信息记录在光盘（1）上的异常状态下，为了将激光光源（21）的光功率水平变更为非记录状态，需要检测异常状态 异常数据可能不会记录在光盘（1）上。 在记录操作期间不需要的轨道跳过不是记录功率水平设定的记录功率的条件，旋转光盘（1）的电机（20）引起异常旋转， 在记录操作期间的异常状况。 诊断功能是重要的，其确认在记录操作期间异常状态检测的正常操作和写保护，因为在记录操作期间的异常状况显着降低了记录在光盘（1）上的数据的可靠性。

    Optical recording and reproducing head
    30.
    发明公开
    Optical recording and reproducing head 失效
    光学记录和复制头

    公开(公告)号：EP0099123A3

    公开(公告)日：1986-08-20

    申请号：EP83106877

    申请日：1983-07-13

    申请人： Matsushita Electric Industrial Co., Ltd.

    发明人： Ohara, Shunji ,  Yoshida, Tomio ,  Satoh, Isao ,  Koishi, Kenji

    IPC分类号： G11B07/12 ,  G11B07/08 ,  G02B27/28

    CPC分类号： G02B27/283 ,  G11B7/08 ,  G11B7/12

    摘要： Disclosed is a method wherein light beams emitted from two light sources are combined together and applied to a recording medium and the light beams reflected from the recording medium are drawn out being separated from each other. The method is such that the wavelengths of the light beams from both the light sources are made different from each other, i.e., λ 1 , X 2 , and the light beams from the light sources are combined together by means of a polarization beam splitter, two quarter wave plates, optical filters and so forth and are then simultaneously focussed by a single focussing lens substantially along the optical axis thereof, thereby allowing microspots of light focussed to be disposed on a disc close to each other. Moreover, the light beams reflected from the disc are drawn out being completely separated from each other by the polarization beam splitter owing to the difference in polarization direction. Further, for example, one of the light beams entering the polarization beam splitter is passed through a magnifier prism having a magnifying surface and a reflecting surface, or one or more cylindrical lenses to magnify the beam diameter only in the direction parallel to the composition surface of a semiconductor laser as the light source thereof, so as to be a light beam of substantially circular cross section. On the other hand, the other light beam is passed through one or more cylindrical lenses to reduce the beam diameter only in the direction parallel to the composition surface of a semiconductor laser as the light source thereof so as to be a light beam of oval cross section. Thereby, a substantially circular microspot of light and an oval microspot of light can be obtained on the disc. Furthermore, the two light sources, the polarization beam splitter and a splitter prism are arranged so that the optical axes of the light beams from both the light sources and the optical axis for drawing out the light reflected from the disc and leading the same to the photodetector are made substantially parallel to each other. Thereby, the optical recording and reproducing head is made more compact.