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23 条记录 (耗时 0.014 秒)

    Optical head
    1.
    发明公开
    Optical head 审中-公开
    光学头

    公开(公告)号：EP1220213A1

    公开(公告)日：2002-07-03

    申请号：EP02005573.7

    申请日：1999-02-12

    申请人： Hitachi Ltd.

    发明人： Shimano, Takeshi ,  Nakamura, Shigeru ,  Ohnishi, Kunikazu ,  Inoue, Masayuki ,  Fukui, Yukio

    IPC分类号： G11B7/12 ,  G11B7/135 ,  G11B7/09 ,  G11B7/095 ,  G11B7/13

    CPC分类号： G11B7/1353 ,  G11B7/00718 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/131 ,  G11B7/1367 ,  G11B7/1381 ,  G11B2007/0006

    摘要： An information reproducing method for reproducing information recorded on an optical disk (107), wherein light from a semiconductor laser (101) is converged as at least one focused spot on the optical disk. The light is reflected as a plurality of reflected light beams the polarities of the intensity distributions of which are mutually in a substantially inverted relationship with each other when the focused spot crosses a track of the optical disk. The reflected beams are detected and their respective focus error signals are added to obtain a focus error signal, and their respective tracking error signals are subtracted to obtain a tracking error signal. The optical disk has a groove width equal to substantially one half of its track pitch. The tracking error signals may be amplified by a gain proportional to a ratio between reciprocals of respective total amounts of light reflected by the plurality of reflected beams.

    摘要翻译： 一种信息再现方法，用于再现记录在光盘（107）上的信息，其中来自半导体激光器（101）的光被会聚为光盘上的至少一个聚焦点。 光被反射为多个反射光束，当聚焦点与光盘的轨道相交时，其强度分布的极性彼此基本上呈相反的关系。 反射光束被检测并且它们各自的聚焦误差信号被相加以获得聚焦误差信号，并且它们各自的跟踪误差信号被减去以获得跟踪误差信号。 光盘的槽宽基本上等于其轨道间距的一半。 跟踪误差信号可以通过与由多个反射光束反射的各个总光量的倒数之间的比例成比例的增益来放大。

    Optical head
    2.
    发明公开
    Optical head 有权
    光学头

    公开(公告)号：EP0936603A2

    公开(公告)日：1999-08-18

    申请号：EP99301040.4

    申请日：1999-02-12

    申请人： Hitachi, Ltd.

    发明人： Shimano, Takeshi ,  Nakamura, Shigeru ,  Ohnishi, Kunikazu ,  Inoue, Masayuki ,  Fukui, Yukio

    IPC分类号： G11B7/12

    CPC分类号： G11B7/1353 ,  G11B7/00718 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/131 ,  G11B7/1367 ,  G11B7/1381 ,  G11B2007/0006

    摘要： An optical head eliminates an disturbance which occurs in a focus error signal in association with the decentering of an optical disk (107) when an optical spot crosses a track on a storage film surface, and in addition the optical head cancels an off-set which occurs in a tracking error signal in association with the movement of an objective lens (106). In the constitution of the optical head, phases of wave surfaces of ±1st order diffracted lights are shifted by an amount of λ/2 with a common period by using a phase-inverted diffraction grating (701) the phase of which is inverted with a period of Dλ/(2P · NA) in a radial direction of the optical disk (107), thus causing, on the optical disk (107), sub-spots (109, 110) to be located on the same track as a main-spot (108). Taking advantage of this location, focal point shift error signals of the main-spot 108 and the sub-spots (109, 110) are added to each other with an appropriate gain ratio, thereby making it possible to cancel the disturbance which occurs in the focus error signal. Meanwhile, tracking error signals of the main-spot (108) and the sub-spots (109, 110) according to a push-pull method are subtracted from each other with an appropriate gain ratio, thereby making it possible to cancel the off-set.

    摘要翻译： 当光点与存储膜表面上的轨道相交时，光学头消除了与光盘（107）的偏心相关的聚焦误差信号中出现的干扰，此外光学头消除了偏移 伴随着物镜（106）的移动而产生跟踪误差信号。 在光学头的构造中，通过使用相位反转衍射光栅（701），±1次衍射光的波面的相位以公共周期偏移量λ/ 2 （107）的半径方向上的Dλ/（2P·NA）的周期，由此在光盘（107）上使子点（109,110）位于相同的轨道上作为主 （108）。 利用该位置，主点108和子点（109,110）的焦点偏移误差信号以适当的增益比彼此相加，由此可以消除在主点108和子点（109,110）中出现的干扰 聚焦误差信号。 同时，根据推挽方法的主光点（108）和副光点（109,110）的跟踪误差信号以适当的增益比彼此相减，由此可以消除偏离光点 组。

    IC card automated transaction terminal and IC card used therein
    8.
    发明公开
    IC card automated transaction terminal and IC card used therein 失效
    智能卡终端进行自动交易和二手智能卡

    公开(公告)号：EP0775990A3

    公开(公告)日：2000-08-23

    申请号：EP96118451.2

    申请日：1996-11-18

    申请人： Hitachi, Ltd.

    发明人： Matsumoto, Kenji ,  Ito, Shigeyuki ,  Takami, Yutaka ,  Inoue, Masayuki

    IPC分类号： G07F7/08 ,  G07F19/00

    CPC分类号： G07F7/0866 ,  G06Q20/105 ,  G06Q20/3572 ,  G06Q20/363 ,  G06Q40/00

    摘要： An IC card automated transaction terminal is provided to operate in conjunction with an IC card capable of storing a plurality of different balances relating to commercial transactions. For example, the IC card can provide separate storage for electronic money information and bonus point information. IC card reading/writing means are provided in the terminal for reading and writing such information stored in said IC card along with input means for inputting transacted sum information and information storage means for storing electronic money information equivalent to transacted sum information. In another embodiment, small sum and large sum balances can be separately stored on the IC card, with only the large sum balance being locked and requiring a security code to carry out a transaction.

    Multichip IC card and IC card system using it
    9.
    发明公开
    Multichip IC card and IC card system using it 失效
    多芯片IC卡和使用制度

    公开(公告)号：EP0779598A3

    公开(公告)日：1999-03-03

    申请号：EP96308917.2

    申请日：1996-12-09

    申请人： HITACHI, LTD.

    发明人： Inoue, Masayuki ,  Itoh, Shigeyuki ,  Takami, Yutaka ,  Matsumoto, Kenji ,  Yamashita,Kotaro

    IPC分类号： G06K19/07

    CPC分类号： G06K19/072 ,  G06K19/07

    摘要： The object of the present invention is to provide a multichip IC card which seems to be a single chip IC card constituted by one chip and in which plural function chips are built. The multichip IC card is provided with a connector 3 for connecting to an interface processor 1, a master chip 4 for controlling a system in a card, at least one function chip 6-1 to 6-n and selection means 5A for connecting the function chip selected by the master chip and the interface processor 1 via the connector 3.

    IC card processing system and processing method
    10.
    发明公开
    IC card processing system and processing method 失效
    系统与Verfahren zum Verarbeiten von Chipkarten

    公开(公告)号：EP0887774A2

    公开(公告)日：1998-12-30

    申请号：EP98304848.9

    申请日：1998-06-19

    申请人： HITACHI, LTD. ,  HITACHI VIDEO ENGINEERING, INC.

    发明人： Yoneta, Koichi ,  Inoue, Masayuki ,  Inamitsu, Tetsuharu ,  Itoh, Shigeyuki ,  Takami, Yutaka ,  Matsumoto, Kenji

    IPC分类号： G07F7/10 ,  G07F19/00 ,  H04M1/274

    CPC分类号： G07F7/0866 ,  G06Q20/105 ,  G06Q20/363 ,  H04M1/675 ,  H04M1/72519 ,  H04M3/387 ,  H04M3/493

    摘要： An IC card system includes an IC card (1), an IC card read/write unit (2) for reading/writing the IC card, a communication unit (10) intervening for connection to a communication line network (5), a controller (3) for controlling the IC card read/write unit and communication unit, and a server system (4) connected to the communication line network. The IC card (1) is written with at least specified access destination information for accessing the server system (4), the controller (3) automatically accesses the server system (4) through the communication unit (10) in accordance with the access destination information in the IC card, and the server system (4) offers information to an information offering destination (1, 3, 4) determined automatically by information to be offered which is processed by the server system (4), an information offering destination (1, 3, 4) already written in the IC card (1) inserted in the IC card read/write unit (2) or an information offering destination (1, 3, 4) designated by a user after the insertion of the IC card (1).

    摘要翻译： IC卡系统包括IC卡（1），用于读/写IC卡的IC卡读/写单元（2），用于连接到通信线网络（5）的通信单元（10），控制器 （3），用于控制IC卡读/写单元和通信单元，以及连接到通信线网络的服务器系统（4）。 IC卡（1）写入至少具有用于访问服务器系统（4）的访问目的地信息，控制器（3）根据访问目的地通过通信单元（10）自动访问服务器系统（4） IC卡中的信息和服务器系统（4）向由服务器系统（4）处理的要提供的信息自动确定的信息提供目的地（1，3，4）提供信息，信息提供目的地（ 已经写入插入IC卡读/写单元（2）的IC卡（1）或在插入IC卡之后由用户指定的信息提供目的地（1,3,4） （1）。