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53 条记录 (耗时 0.023 秒)

    Tunable wavelength filter formed by 2 lcds in series having opposite twist angles of n*.pi./2 and a dielectric mirror layer on each substrate
    41.
    发明授权
    Tunable wavelength filter formed by 2 lcds in series having opposite twist angles of n*.pi./2 and a dielectric mirror layer on each substrate 失效
    串联可变波长滤波器，由两个串联的n * pi / 2的扭转角和每个基板上的电介质镜层组成

    公开(公告)号：US5592314A

    公开(公告)日：1997-01-07

    申请号：US353205

    申请日：1994-12-01

    申请人： Yasuyuki Ogasawara ,  Yoshihiko Watanabe

    发明人： Yasuyuki Ogasawara ,  Yoshihiko Watanabe

    IPC分类号： G02F1/13 ,  G02F1/1347 ,  G02F1/139 ,  G02F1/21 ,  G02F1/1335 ,  G01B9/02

    CPC分类号： G02F1/13473 ,  G02F1/1396 ,  G02F2001/213

    摘要： A tunable wavelength filter is independent of the polarization. The filter includes first and second liquid crystal layers. Each liquid crystal layer includes two opposing glass substrates on which transparent electrodes, dielectric mirrors and alignment layers are coated in this order, respectively, and a liquid crystal interposed between the opposing alignment layers. In the first liquid crystal layer, the molecule alignment of the liquid crystal is twisted by n.pi./2 radian to one twisting direction where n is a positive uneven number. In the second liquid crystal layer, the molecule alignment of the liquid crystal is twisted by -n.pi./2 radian to the twisting direction. The first and second crystal layers are laid to overlap each other so that an axis of liquid crystal molecules on the emission side of the first liquid layer is perpendicular to an axis of liquid crystal molecules on the incidence side of the second liquid crystal layer.

    摘要翻译： 可调波长滤波器与极化无关。 该过滤器包括第一和第二液晶层。 每个液晶层包括两个相对的玻璃基板，其上分别以其顺序涂覆有透明电极，电介质反射镜和取向层，以及插入在相对的取向层之间的液晶。 在第一液晶层中，液晶的分子对准被n pi / 2弧度扭转到一个扭转方向，其中n是正的不均匀数。 在第二液晶层中，液晶的分子取向以扭转方向扭转-ππ/ 2弧度。 第一和第二晶体层被放置成彼此重叠，使得第一液体层的发射侧的液晶分子的轴垂直于第二液晶层的入射侧的液晶分子的轴。

    Optical information processing method and apparatus including measuring and correcting the offset of a tracking error signal from an output of a photodetector using a vibrating objective lens
    42.
    发明授权
    Optical information processing method and apparatus including measuring and correcting the offset of a tracking error signal from an output of a photodetector using a vibrating objective lens 失效
    光信息处理方法和装置，包括使用振动物镜测量和校正来自光电检测器的输出的跟踪误差信号的偏移

    公开(公告)号：US5532990A

    公开(公告)日：1996-07-02

    申请号：US447645

    申请日：1995-05-23

    申请人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

    发明人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

    IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13

    CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/126 ,  G11B7/13

    摘要： An optical information processing apparatus and method of correcting an offset of a tracking error signal. The apparatus includes an optical head for irradiating a light beam onto an optical recording medium, an objective lens, mounted on the optical head, for condensing the light beam onto the recording medium, a photodetector for receiving a light beam reflected by or transmitted through the recording medium and for generating a tracking error signal indicative of a positional deviation between the light beam irradiated position and a track, a tracking actuator for moving the objective lens in a direction intersecting the tracks and for causing the objective lens to vibrate in the vicinity of the center of the light beam, a tracking controller for driving the tracking actuator in accordance with the tracking error signal so as to correct the positional deviation, a measuring device for measuring an offset of the tracking error signal from an output of the photodetector when the objective lens is caused to vibrate in the vicinity of the center of the light beam and a correction device for correcting the offset of the tracking error signal on the basis of the offset measured by the measuring device.

    摘要翻译： 一种光学信息处理装置和纠正跟踪误差信号偏移的方法。 该装置包括用于将光束照射到光学记录介质上的光学头，安装在光学头上的物镜，用于将光束聚光到记录介质上;光电检测器，用于接收由光束反射或透过的光束 并且用于产生指示光束照射位置和轨道之间的位置偏差的跟踪误差信号，跟踪致动器，用于在与轨道相交的方向上移动物镜，并使物镜在 光束的中心，跟踪控制器，用于根据跟踪误差信号驱动跟踪致动器以校正位置偏差;测量装置，用于测量跟踪误差信号与光电检测器的输出的偏移量 使物镜在光束的中心附近振动，并具有校正装置 基于由测量装置测量的偏移来校正跟踪误差信号的偏移。

    Percussion hammer
    43.
    发明授权
    Percussion hammer 失效
    打击乐锤

    公开(公告)号：US5456324A

    公开(公告)日：1995-10-10

    申请号：US277025

    申请日：1994-07-19

    申请人： Toshiaki Takagi ,  Yoshihiko Watanabe

    发明人： Toshiaki Takagi ,  Yoshihiko Watanabe

    IPC分类号： B23B45/16 ,  B25D16/00 ,  B25D11/04

    CPC分类号： B25D16/006 ,  B25D2216/0015 ,  B25D2216/0023 ,  B25D2250/035

    摘要： A percussion hammer for a tool includes a rotational drive source. A motion converting mechanism is connected to the rotational drive source for convening rotational movement of the rotational drive source into reciprocating movement. A striking mechanism is connected to the motion converting mechanism, and has a drive cylinder. A rotation transmitting mechanism is operative for transmitting rotational movement from the rotational drive source to the tool. A drive wheel is connected to the rotational drive source, and extends around the drive cylinder. A coupling member is connected to the drive cylinder, and extends around the drive cylinder. The coupling member is movable in a percussion axis direction. A movable adjustment member is connected to the coupling member for selectively connecting and disconnecting the coupling member to and from the drive wheel. Teeth are formed on an outer circumferential surface of the drive cylinder. A casing has an inner circumferential surface formed with a projection or a recess extending in the percussion axis direction. A sleeve has an outer circumferential portion which mates in shape with the projection or the recess of the casing. The sleeve engages the casing via the projection or the recess of the casing, and is movable in the percussion axis direction. Teeth are formed on the sleeve, and mate in shape with the teeth on the drive cylinder. The adjustment member is connected to the sleeve for selectively moving the teeth on the sleeve into and out of engagement with the teeth on the drive cylinder.

    摘要翻译： 用于工具的冲击锤包括旋转驱动源。 运动转换机构连接到旋转驱动源，用于使旋转驱动源的旋转运动进行往复运动。 撞击机构连接到运动转换机构，并具有驱动气缸。 旋转传递机构用于将旋转驱动源的旋转运动传递到工具。 驱动轮连接到旋转驱动源，并且围绕驱动气缸延伸。 联接构件连接到驱动气缸，并且围绕驱动气缸延伸。 联接构件可以在冲击轴方向上移动。 可动调节构件连接到联接构件，用于选择性地将联接构件连接到驱动轮和从驱动轮分离。 齿形成在驱动缸的外周面上。 壳体具有形成有在冲击轴方向上延伸的突起或凹部的内周面。 套筒具有与壳体的突出部或凹部配合形状的外周部。 套筒通过壳体的突起或凹部与壳体接合，并且可以在冲击轴方向上移动。 齿形成在套筒上，与驱动气缸上的齿配合。 调节构件连接到套筒，用于选择性地将套筒上的齿移动到与驱动气缸上的齿接合。

    Information recording/reproducing method
    45.
    发明授权
    Information recording/reproducing method 失效
    信息记录/再现方法

    公开(公告)号：US5394387A

    公开(公告)日：1995-02-28

    申请号：US921640

    申请日：1992-07-30

    申请人： Yoshihiko Watanabe

    发明人： Yoshihiko Watanabe

    IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B19/28 ,  G11B20/10 ,  G11B20/12 ,  G11B21/08 ,  H04N5/76

    CPC分类号： G11B7/0079 ,  G11B19/28 ,  G11B20/10 ,  G11B20/1258 ,  G11B7/08505 ,  G11B7/24085 ,  G11B2020/10916

    摘要： An information recording/reproducing method in which a recording area is divided into a plurality of zones in the radial direction of a disk so that the lengths of recording pits become the same in the entire recording area of the disk and the recording/reproduction of information is effected with the number of revolutions of the disk changed in each zone from the inner peripheral zone toward the outer peripheral zone. The method includes the step of effecting the recording or reproduction of the information without changing the number of revolutions if the amount of information to be recorded or reproduced is equal to or smaller than a predetermined amount when seeking is effected from a zone in which a recording/reproducing head is in a standby state to a different zone to effect the recording or reproduction.

    摘要翻译： 一种信息记录/再现方法，其中记录区域被划分成盘的径向方向上的多个区域，使得记录坑的长度在盘的整个记录​​区域中变得相同，并且信息的记录/再现 以每个区域中的盘的转数从内周区域朝向外周区段进行。 该方法包括以下步骤：在不改变转数的情况下进行信息的记录或再现，如果要从记录的区域进行寻找时要记录或再现的信息量等于或小于预定量 /再现头处于等待状态到不同的区域以进​​行记录或再现。

    Optical information processing apparatus for holding a lens at a predetermined position along a tracking path at pulling-in of focusing control
    48.
    发明授权
    Optical information processing apparatus for holding a lens at a predetermined position along a tracking path at pulling-in of focusing control 失效
    光学信息处理设备，用于在聚焦控制的拉入期间沿着跟踪路径将透镜保持在预定位置

    公开(公告)号：US5287339A

    公开(公告)日：1994-02-15

    申请号：US13227

    申请日：1993-02-01

    申请人： Yoshihiko Watanabe

    发明人： Yoshihiko Watanabe

    IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/00

    CPC分类号： G11B7/08511 ,  G11B7/0945

    摘要： An optical information processing apparatus for irradiating a focused light beam to an optical recording medium to record and/or reproduce information. The apparatus includes a device for focus-controlling the light beam, a focus pull-in device for switching the focus control device from an inactive state to an active state, a device for moving an irradiation position of the light beam in a surface of the medium to effect tracking control, and a device for holding the light beam at a center of a movable range by the tracking control device, during the focus pull-in.

    摘要翻译： 一种用于将聚焦光束照射到光记录介质以记录和/或再现信息的光学信息处理设备。 该装置包括用于聚焦控制光束的装置，用于将聚焦控制装置从非活动状态切换到活动状态的聚焦拉入装置，用于将光束的照射位置移动到 中等到跟踪控制，以及用于在聚焦拉入期间通过跟踪控制装置将光束保持在可移动范围的中心的装置。