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11. 发明公开

EP0553664A2 Optical disk apparatus 失效
标题翻译：光盘装置
公开(公告)号：EP0553664A2
公开(公告)日：1993-08-04
申请号：EP93100561.5
申请日：1993-01-15
申请人： HITACHI, LTD.
发明人： Kanazawa, Hiroshi , Tajima, Fumio , Naganuma, Ryoichi , Mutoh, Nobuyoshi , Takahashi, Tadashi , Nihei, Hideki , Tanae, Shunichi , Horie, Hideaki , Kawamata, Syooichi
IPC分类号： G11B25/04 , G11B17/34 , G11B19/20 , G11B19/28 , G11B17/028 , G11B19/04 , G11B7/085 , G11B33/08 , H02K21/14 , H02K21/24
CPC分类号： G11B17/0282 , G11B7/08505 , G11B7/08582 , G11B17/028 , G11B17/34 , G11B19/04 , G11B19/20 , G11B19/28 , G11B25/043 , G11B33/08 , H02K21/14 , H02K21/24
摘要： A portable-type disk apparatus for a 3.5-inch or less optical disk implemented in a thin, light-weight and miniaturized structure having a vibration-withstanding capability. An optical head assembly is disposed stationarily while an optical disk (5) and a spindle motor (6) for rotating the optical disk (5) are disposed movably in a diametrical direction of the optical disk. The spindle motor (6) is constituted by a brushless motor of a substantially semi-circular form in cross section and having a laterally truncated portion. The optical head assembly including an optical head and a laser circuit is disposed at the side of the laterally truncated portion.
摘要翻译：一种用于3.5英寸或更小的光盘的便携式磁盘装置，以薄型，轻型和小型化结构实现，具有抗振能力。一个光学头组件被静止地设置，而用于旋转光盘（5）的光盘（5）和主轴电动机（6）被设置成在光盘的径向上可移动。主轴电动机（6）由横截面为大致半圆形且具有横向截头部分的无刷电动机构成。包括光学头和激光电路的光学头组件设置在横向截头部分的侧面。

12. 发明公开

EP0497291A3 Optical disk memory apparatus 失效
标题翻译：光盘存储器
公开(公告)号：EP0497291A3
公开(公告)日：1993-04-21
申请号：EP92101388.4
申请日：1992-01-28
申请人： HITACHI, LTD.
发明人： Tsuboi, Nobuyoshi , Sato, Yoshio , Minemura, Hiroyuki , Sugita, Tatsuya , Fushimi, Tetsuya , Nihei, Hideki , Yasukawa, Saburo , Shibanuma, Hideo , Sagawa, Akio , Tajima, Fumio
IPC分类号： G11B7/00 , G11B7/08 , G11B7/085
CPC分类号： G11B7/0925 , G11B7/08529 , G11B7/08582 , G11B7/1356 , G11B7/1374 , G11B19/20 , G11B23/0316
摘要： An optical disk memory apparatus comprising, at least, a disk rotating mechanism (240) which drives and rotates an optical disk (140) set in the memory, an optical head (210) which projects a light beam on the optical disk and which detects reflected light from the optical disk, and head displacement means (300) including an actuator (310) for displacing the optical head. The disk rotating mechanism (240), the optical head (210) and the head displacement means (310) are arranged along a common plane. In addition, the actuator (310) is arranged at the rear of the optical head (210) with respect to a rotating shaft (241) of the disk rotating mechanism (240). Since the disk rotating mechanism (240), the optical head (210) and the head displacement means (310) are arranged in this order, the memory apparatus can be made structurally thinner. Further, it can be implemented in a card type structure.

13. 发明授权

EP0241017B1 Optical memory medium and its information recording and erasing method and apparatus 失效
标题翻译：光学记忆介质及其信息记录和擦除方法和装置
公开(公告)号：EP0241017B1
公开(公告)日：1993-01-20
申请号：EP87105213.0
申请日：1987-04-08
申请人： HITACHI, LTD.
发明人： Sato, Yoshio , Watanabe, Atsumi Hitachi Motomachi House 22 , Shimada, Satoshi , Sasaki, Hiroshi , Tsuboi, Nobuyoshi , Nihei, Hideki , Miyamoto, Norifumi , Koyanagi, Hiroaki , Minemura, Hiroyuki
IPC分类号： G11B7/00 , G11B7/007 , G11B7/24
CPC分类号： G11B7/24 , G11B7/00557 , G11B7/00745

14. 发明公开

EP0509635A2 Disk drive unit 失效
标题翻译：电动机和电动机。
公开(公告)号：EP0509635A2
公开(公告)日：1992-10-21
申请号：EP92302048.1
申请日：1992-03-11
申请人： HITACHI, LTD. , JAPAN SERVO CO. LTD.
发明人： Tajima, Fumio , Kanazawa, Hiroshi , Katayama, Hiroshi , Ohnishi, Kazuo , Takashashi, Tadashi , Mutoh, Nobuyoshi , Morinaga, Shigeki , Tsuboi, Nobuyoshi , Nihei, Hideki
IPC分类号： H02K1/14 , H02K7/14 , H02K29/00 , H02K21/16 , G11B19/20 , G11B25/04 , G11B17/028 , G11B19/28 , G11B21/02 , H01L41/09 , G11B33/12
CPC分类号： G11B25/043 , G11B19/20 , H02K1/14 , H02K1/146 , H02K7/14 , H02K16/00 , H02K21/16 , H02K41/03 , H02K2201/15
摘要： A motor has a stator (4) and a rotor (3), the stator (4) having cores (9A) and drive coils (1) which generate magnetic fields for rotating the rotor (3). The stator (4) also has a yoke (9B,9C) surrounding the rotor (3) and the rotor (3) is positioned such that it is closer to one part (9B) of the outer periphery of the yoke than another part (9B) of the yoke. Such a motor is particularly suitable for use in a disk drive unit as a spindle motor (2) for rotating the disk (1). Then an actuator (12) for moving a head (11) may be located adjacent the part (9B) of the outer periphery of the yoke (9b,9C) which is closest to the rotor. This permits the head (11) to approach closely the axis of rotation of the disk (1) without the spindle motor (2) interfering with the movement of the head (11). The continuous yoke (9B,9C) prevents magnetic flux leakage from the spindle motor interfering with the actuator (12). The actuator (12) may itself have a yoke (9D) integral with the yoke (9B,9C) of the spindle motor (2), and/or other components in common.
摘要翻译：电动机具有定子（4）和转子（3），定子（4）具有芯（9A）和驱动线圈（1），其产生用于旋转转子（3）的磁场。定子（4）还具有围绕转子（3）的轭（9B，9C），并且转子（3）被定位成使其更靠近轭的外周的一部分（9B）而不是另一部分 9B）。这样的电动机特别适用于作为用于旋转盘（1）的主轴电机（2）的盘驱动单元。然后，用于移动头部（11）的致动器（12）可以位于最接近转子的轭架（9b，9C）的外周的部分（9B）附近。这使得头部11能够紧密地接近盘（1）的旋转轴线，而主轴马达（2）不影响头部（11）的运动。连续轭（9B，9C）防止来自主轴电动机的磁通量泄漏干扰致动器（12）。致动器（12）本身可以具有与主轴电机（2）的轭架（9B，9C）成一体的轭架（9D）和/或共同的其他部件。

15. 发明公开

EP0497291A2 Optical disk memory apparatus 失效
标题翻译： OptischesScheibespeichergerät。
公开(公告)号：EP0497291A2
公开(公告)日：1992-08-05
申请号：EP92101388.4
申请日：1992-01-28
申请人： HITACHI, LTD.
发明人： Tsuboi, Nobuyoshi , Sato, Yoshio , Minemura, Hiroyuki , Sugita, Tatsuya , Fushimi, Tetsuya , Nihei, Hideki , Yasukawa, Saburo , Shibanuma, Hideo , Sagawa, Akio , Tajima, Fumio
IPC分类号： G11B7/00 , G11B7/08 , G11B7/085
CPC分类号： G11B7/0925 , G11B7/08529 , G11B7/08582 , G11B7/1356 , G11B7/1374 , G11B19/20 , G11B23/0316
摘要： An optical disk memory apparatus comprising, at least, a disk rotating mechanism (240) which drives and rotates an optical disk (140) set in the memory, an optical head (210) which projects a light beam on the optical disk and which detects reflected light from the optical disk, and head displacement means (300) including an actuator (310) for displacing the optical head. The disk rotating mechanism (240), the optical head (210) and the head displacement means (310) are arranged along a common plane. In addition, the actuator (310) is arranged at the rear of the optical head (210) with respect to a rotating shaft (241) of the disk rotating mechanism (240). Since the disk rotating mechanism (240), the optical head (210) and the head displacement means (310) are arranged in this order, the memory apparatus can be made structurally thinner. Further, it can be implemented in a card type structure.
摘要翻译：一种光盘存储装置，至少包括驱动旋转设置在存储器中的光盘（140）的盘旋转机构（240），将光束投射在光盘上的光头（210）来自光盘的反射光和头位移装置（300）包括用于移动光学头的致动器（310）。盘旋转机构（240），光头（210）和头位移装置（310）沿公共平面布置。此外，致动器（310）相对于盘旋转机构（240）的旋转轴（241）布置在光学头（210）的后部。由于盘旋转机构（240），光头（210）和头位移装置（310）按此顺序排列，所以可使结构上更薄的存储装置。此外，它可以以卡片类型结构来实现。

16. 发明公开

EP0241017A3 Optical memory medium and its information recording and erasing method and apparatus 失效
标题翻译：光学记忆介质及其信息记录和擦除方法和装置
公开(公告)号：EP0241017A3
公开(公告)日：1990-01-17
申请号：EP87105213.0
申请日：1987-04-08
申请人： HITACHI, LTD.
发明人： Sato, Yoshio , Watanabe, Atsumi Hitachi Motomachi House 22 , Shimada, Satoshi , Sasaki, Hiroshi , Tsuboi, Nobuyoshi , Nihei, Hideki , Miyamoto, Norifumi , Koyanagi, Hiroaki , Minemura, Hiroyuki
IPC分类号： G11B7/00 , G11B7/007 , G11B7/24
CPC分类号： G11B7/24 , G11B7/00557 , G11B7/00745
摘要： An information recording and erasing method and apparatus of an optical memory medium (10) including a substrate, a guard film, and an intermediate layer portion so disposed between said substrate and said guard film as to include at least a recording material layer having a phase changing with temperature and include at least one good conductor layer, comprising the steps of supplying magnetic flux varying relatively to said good conductor layer to generate eddy currents within said good conductor layer, and heating said recording material layer with heat generated in said good conductor due to the eddy current loss to effect information recording and erasing with respect to said recording material layer.

17. 发明公开

EP0184188A3 Information-recording and reproducing device 失效
标题翻译：信息记录和再现设备
公开(公告)号：EP0184188A3
公开(公告)日：1988-11-02
申请号：EP85115324
申请日：1985-12-03
申请人： HITACHI, LTD.
发明人： Tsuboi, Nobuyoshi , Nihei, Hideki , Shimada, Satoshi , Sasaki, Hiroshi , Miyamoto, Norifumi , Sato, Yoshio , Koyanagi, Hiroaki , Ito, Tetsuo , Hiraga, Ryo , Watanabe, Atsumi
IPC分类号： G11B07/007 , G11B07/09 , G11B11/10 , G11B07/125 , G11B13/04
CPC分类号： G11B7/24085 , G11B7/00557 , G11B7/126 , G11B7/24088 , G11B7/243 , G11B7/2533 , G11B7/2534 , G11B7/257 , G11B7/2578 , G11B19/02 , G11B2007/24304 , G11B2007/24308 , G11B2007/25706 , G11B2007/2571 , G11B2007/25711
摘要： In an information-recording and reproducing device using a recording medium composed of metal or an alloy including at least two kinds of crystalline structures in a solid state, the crystalline structure in one temperature area being maintained in the other temperature area, or that device using a recording medium using a reversible change between crystalloid and non-crystalloid or said device using a recording medium of optical magnetism, it is designed to accomplish stable recording without being influenced by a sensitivity of a recording medium or an output change of a laser beam by means of providing a circuit for flowing a certain amount of driving current through a laser diode, accomplishing record and detecting the recording state.
摘要翻译：在使用由包含至少两种固体状态的晶体结构的金属或合金构成的记录介质的信息记录和再现装置中，一个温度区域中的晶体结构保持在另一个温度区域，或者使用使用晶体和非晶体之间的可逆变化的记录介质或使用光磁记录介质的所述器件，其被设计为在不受记录介质的灵敏度或激光束的输出变化的影响的情况下实现稳定的记录，或者通过提供用于使一定量的驱动电流流过激光二极管的电路的装置，完成记录和检测记录状态。

18. 发明公开

EP0241017A2 Optical memory medium and its information recording and erasing method and apparatus 失效
标题翻译：一种光学存储介质和信息记录和-löschmethode和设备来这样做。
公开(公告)号：EP0241017A2
公开(公告)日：1987-10-14
申请号：EP87105213.0
申请日：1987-04-08
申请人： HITACHI, LTD.
发明人： Sato, Yoshio , Watanabe, Atsumi Hitachi Motomachi House 22 , Shimada, Satoshi , Sasaki, Hiroshi , Tsuboi, Nobuyoshi , Nihei, Hideki , Miyamoto, Norifumi , Koyanagi, Hiroaki , Minemura, Hiroyuki
IPC分类号： G11B7/00 , G11B7/007 , G11B7/24
CPC分类号： G11B7/24 , G11B7/00557 , G11B7/00745
摘要： An information recording and erasing method and apparatus of an optical memory medium (10) including a substrate, a guard film, and an intermediate layer portion so disposed between said substrate and said guard film as to include at least a recording material layer having a phase changing with temperature and include at least one good conductor layer, comprising the steps of supplying magnetic flux varying relatively to said good conductor layer to generate eddy currents within said good conductor layer, and heating said recording material layer with heat generated in said good conductor due to the eddy current loss to effect information recording and erasing with respect to said recording material layer.
摘要翻译：一种信息记录和擦除的光学存储介质（10）包括一个基片，保护片，并在中间层部分在所述基板和所述保护电影之间这样设置的方法和装置，以包括具有一个相位的至少一个记录材料层随温度的变化，并且包括至少一个好的导体层，包括供应磁通量相对变化到所述良导体层，以产生所述良导体层内的涡电流的步骤，以及加热所述记录在适当说良导体产生的热材料层到涡流损耗，以实现信息记录和擦除相对于所述记录材料层。

19. 发明公开

EP0181005A2 Optical information apparatus and method of recording and erasing information 失效
标题翻译： Optischesinformationsgerätund Methode zum Aufzeichnen undLöschenvon Information。
公开(公告)号：EP0181005A2
公开(公告)日：1986-05-14
申请号：EP85114246.3
申请日：1985-11-08
申请人： HITACHI, LTD.
发明人： Sato, Yoshio , Shimada, Satoshi , Sasaki, Hiroshi , Miyamoto, Norifumi , Tsuboi, Nobuyoshi , Nihei, Hideki , Watanabe, Ryuji , Watanabe, Atsumi , Ito, Tetsuo , Koyanagi, Hiroaki
IPC分类号： G11B7/00 , G11B7/24 , G11B7/007 , G11B7/09
CPC分类号： G11B7/257 , G11B7/00557 , G11B7/0909 , G11B7/135 , G11B7/24085 , G11B7/243 , G11B2007/13727 , G11B2007/24304 , G11B2007/24308
摘要： The present invention employs as a recording medium (9) a metal or alloy which exhibits an intercrystalline transition before and after writing. In the present invention, two light beams of unequal wavelengths are used so as to write information with the light beam of the longer wavelength and to erase information with the light beam of the shorter wavelength. In changing a written content, a wavelength with which the reflection rate of the recording medium (9) increases is used.
摘要翻译：本发明作为记录介质使用在写入之前和之后呈现晶间转变的金属或合金。在本发明中，使用两个不等波长的光束，以便用较长波长的光束写入信息，并用较短波长的光束擦除信息。在改变书面内容时，使用记录介质的反射率增加的波长。

20. 发明公开

EP2159911A3 Motor controller 审中-公开
公开(公告)号：EP2159911A3
公开(公告)日：2012-10-24
申请号：EP09010682.4
申请日：2009-08-19
申请人： Hitachi Ltd.
发明人： Izumi, Shiho , Kaneko, Satoru , Nihei, Hideki
IPC分类号： H02P21/14 , H02P6/14 , H02P21/02 , B60L3/00 , B60L15/02
CPC分类号： B60W20/10 , B60K6/48 , B60L3/0038 , B60L3/0046 , B60L3/0061 , B60L3/0092 , B60L3/04 , B60L11/14 , B60L15/025 , B60L2210/20 , B60L2220/14 , B60L2220/16 , B60L2250/16 , B60W10/06 , B60W10/08 , B60W20/00 , B60W2510/24 , H02P6/15 , H02P21/02 , H02P21/18 , Y02T10/6221 , Y02T10/6286 , Y02T10/643 , Y02T10/70 , Y02T10/7077 , Y02T10/725
摘要： When the torque command value (Tr*) is zero, a set point (Idc*) of DC current for an inverter (8) is calculated to obtain a difference between the set point (Idc*) and a detected DC current (Idc) so that an error (Δθe) in magnetic pole position may be estimated and corrected. By correcting the magnetic pole position, unwanted power running and regenerative torque of the motor can be avoided and unnecessary charge or discharge to or from a battery (9) can be prevented.

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