Recordable optical disk and method of manufacturing the same
    113.
    发明授权
    Recordable optical disk and method of manufacturing the same 失效
    可记录光盘及其制造方法

    公开(公告)号:US5386411A

    公开(公告)日:1995-01-31

    申请号:US154275

    申请日:1993-11-18

    CPC分类号: G11B7/0938 G11B7/24

    摘要: Information is optically recorded to a recordable optical disk by a light beam, and a return light is received from the recordable optical disk to produce a tracking error signal. The recordable optical disk includes: a substrate having a disk shape; a groove formed on a surface of the substrate along a predetermined track which the light beam is made to follow; and a recording layer formed on the surface of the substrate, to which the information is recorded by the light beam. A depth of the groove is prescribed such that an amount of the return light from the groove becomes smaller than an amount of the return light from the portion of the recording layer other than the groove in a condition after recording.

    摘要翻译: 通过光束将信息光学地记录到可记录光盘,并且从可记录光盘接收返回光以产生跟踪误差信号。 可记录光盘包括:具有盘形状的基板; 形成在所述基板的表面上的沿着所述光束跟随的预定轨道的凹槽; 以及形成在基板的表面上的记录层,信息由光束记录在该表面上。 规定凹槽的深度,使得在记录后的状态下,来自凹槽的返回光的量变得小于来自凹槽以外的记录层的部分的返回光的量。

    Tracking apparatus for optical disk and tracking method of the same with
tracking polarity invertor responsive to disk type
    114.
    发明授权
    Tracking apparatus for optical disk and tracking method of the same with tracking polarity invertor responsive to disk type 失效
    光盘跟踪装置和跟踪极性反相器响应盘类型的跟踪方法

    公开(公告)号:US5363356A

    公开(公告)日:1994-11-08

    申请号:US158915

    申请日:1993-11-29

    IPC分类号: G11B7/095 G11B7/09

    CPC分类号: G11B7/0901

    摘要: A tracking apparatus for an optical disk, which has a pit array along a predetermined track, is provided with: an optical pickup for irradiating a light beam to the optical disk, and receiving a light modulated and reflected by the optical disk; a tracking error signal generating circuit for generating a tracking error signal on the basis of an output signal of the optical pickup; a tracking servo circuit for making the light beam follow the pit array when a polarity of the tracking error signal changes; a comparing circuit for comparing an amplitude of a first RF signal, which is output from the optical pickup when the polarity of the tracking error signal changes from a first polarity to a second polarity which is reverse to the first polarity, and an amplitude of a second RF signal, which is output from the optical pickup when the polarity of the tracking error signal changes from the second polarity to the first polarity, with each other; and a tracking polarity inverting circuit for selectively inverting a tracking polarity of the tracking servo circuit on the basis of a comparison result of the comparing circuit.

    摘要翻译: 具有沿着预定轨迹的凹坑阵列的光盘跟踪装置设置有:用于将光束照射到光盘并接收由光盘调制和反射的光的光学拾取器; 跟踪误差信号发生电路,用于根据光学拾取器的输出信号产生跟踪误差信号; 跟踪伺服电路,用于当跟踪误差信号的极性改变时使光束跟随凹坑阵列; 比较电路,用于比较当跟踪误差信号的极性从第一极性改变为与第一极性相反的第二极性时从光学拾取器输出的第一RF信号的振幅,以及振幅 第二RF信号,当跟踪误差信号的极性从第二极性变为第一极性时,其从光学拾取器输出; 以及跟踪极性反转电路,用于根据比较电路的比较结果选择性地反转跟踪伺服电路的跟踪极性。

    Vehicle steering system with independent steering for each wheel
    115.
    发明授权
    Vehicle steering system with independent steering for each wheel 失效
    车轮转向系统,每个车轮都有独立转向

    公开(公告)号:US5154437A

    公开(公告)日:1992-10-13

    申请号:US369518

    申请日:1989-06-21

    摘要: In a steering mechanism wherein the turning angle of a steering wheel is transmitted to a wheel via a link mechanism employing a tire rod (3) and a knuckle arm (4), the link mechanism and the wheel (1) are coupled by a multiplying gear (2). Individual drive mechanisms are mounted independently on each wheel, and each wheel is driven independently to enable front-wheel independent drive, rear-wheel independent drive and four-wheel independent drive. Drive of an inner rear wheel is changed over at a steering angle in the vicinity of 90.degree. to effect control of steering. A steering angle multiplied twofold or more can be obtained in simple fashion via the multiplying gear (2) even for a steering angle of about 45.degree. using the conventional link mechanism. In the drive of each wheel, drive of the inner rear wheel is halted in the vicinity of the 90.degree. steering angle, so that locking of the inner front wheel can be avoided. Further, only the inner rear wheel is driven in the reverse direction when a large steering angle is obtained. This makes smooth vehicle travel possible even at large steering angles.

    摘要翻译: 在通过使用轮胎杆(3)和转向节臂(4)的连杆机构将方向盘的转动角度传递到车轮的转向机构中,连杆机构和车轮(1)通过乘法 齿轮(2)。 单独的驱动机构独立地安装在每个车轮上,并且每个车轮独立地被驱动,以实现前轮独立的驱动,后轮独立的驱动和四轮独立的驱动。 内侧后轮的驱动在90°附近的转向角处转换,以实现转向的控制。 使用常规的连杆机构,即使对于大约45度的转向角也可以通过乘法齿轮(2)以简单的方式获得倍增或更大的转向角。 在每个车轮的驱动中,内侧后轮的驱动在90°转向角附近停止,从而可以避免内侧前轮的锁定。 此外,当获得大的转向角时,只有内后轮在相反方向上被驱动。 这使得即使在大的转向角下也能平稳的车辆行驶。

    Projection-type display apparatus
    116.
    发明授权
    Projection-type display apparatus 失效
    投影型显示装置

    公开(公告)号:US5107363A

    公开(公告)日:1992-04-21

    申请号:US498053

    申请日:1990-03-23

    摘要: A projection-type display apparatus has a light modulator for emitting a zero-order diffracted beam and a first-order diffracted beam which are added by a prism into a projecting light beam which is introduced into a light beam scanning system, which two-dimensionally scans a screen. The maximum intensity of the projecting light beam is increased to increase the brightness of the overall screen.

    摘要翻译: 投影式显示装置具有用于发射由棱镜相加的零级衍射光束和一级衍射光束的光调制器,其被引入到光束扫描系统中的投射光束中,二维衍射光束 扫描屏幕。 增加投影光束的最大强度以增加整个屏幕的亮度。

    Steering safety mechanism
    117.
    发明授权
    Steering safety mechanism 失效
    转向安全机制

    公开(公告)号:US5022480A

    公开(公告)日:1991-06-11

    申请号:US377061

    申请日:1989-07-10

    IPC分类号: B62D6/02 B62D5/04

    CPC分类号: B62D5/0457 B62D5/04

    摘要: A steering safety mechanism for an automotive vehicle includes a steering shaft, a steering rack for turning a tire in response to rotation of the steering shaft, a steering motor for rotating the steering shaft or oscillating the steering rack leftward and rightward, and an electronic control unit for controlling the motor. The motor is rotated in a direction which limits rotation of the steering shaft in dependence upon vehicle velocity and steering angle, or vehicle velocity alone. This makes it possible to prevent the vehicle from skidding sideways and rolling over when the driver turns the steering wheel too sharply.

    摘要翻译: 用于机动车辆的转向安全机构包括转向轴,用于响应于转向轴的转动而转动轮胎的转向齿条,用于使转向轴旋转或使转向齿条向左和向右摆动的转向马达,以及电子控制 用于控制电机的单元。 电动机沿着仅限于车辆速度和转向角度或车辆速度限制转向轴的旋转的方向旋转。 这使得当驾驶员太过急剧地转动方向盘时,可以防止车辆横向滑动并滚动。

    Theophylline sustained release granule
    120.
    发明授权
    Theophylline sustained release granule 失效
    茶碱缓释颗粒

    公开(公告)号:US4261970A

    公开(公告)日:1981-04-14

    申请号:US109082

    申请日:1980-01-02

    摘要: A Theophylline sustained release granule comprises 10 to 45 wt. % of Theophylline, 30 to 60 wt. % of a metal salt of higher fatty acid and 0.5 to 10 wt. % of ethyl cellulose at a ratio of 1:1 to 1:3 by weight of Theophylline to said metal salt of higher fatty acid.The Theophylline sustained release granule is effective for maintaining a suitable concentration of Theophylline in blood for a long time.

    摘要翻译: 茶碱缓释颗粒包含10至45重量% 百分比的茶碱,30〜60重量% %的高级脂肪酸的金属盐和0.5〜10wt。 百分比的乙基纤维素以1:1至1:3的茶碱与所述高级脂肪酸金属盐的重量比。 茶碱缓释颗粒对于长期维持合适浓度的茶碱在血液中是有效的。