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41 条记录 (耗时 0.015 秒)

    Optical disk player including a plurality of independent pick-ups
    32.
    发明授权
    Optical disk player including a plurality of independent pick-ups 失效
    光盘播放器包括多个独立的拾音器

    公开(公告)号：US5347506A

    公开(公告)日：1994-09-13

    申请号：US968529

    申请日：1992-10-29

    申请人： Yasunori Matsudo ,  Hisashi Naka

    发明人： Yasunori Matsudo ,  Hisashi Naka

    IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/14 ,  G11B7/20 ,  G11B11/18 ,  G11B19/28 ,  G11B20/10 ,  G11B21/08

    CPC分类号： G11B20/10 ,  G11B7/005 ,  G11B7/14

    摘要： An optical disk player for simultaneously reading data recorded on different areas of the optical disk is disclosed. The optical disk player provides a plurality of pairs of optical pick-ups and pick-up positioning mechanisms. A rotational speed of the optical disk is controlled according to a synchronization signal obtained from a first pick-up and the first pick-up can read the recorded data by a normal method, however, other pick-ups need to change read rates according to respective linear velocity. Therefore, reading speed changing circuits are provided for each of the optical pick-ups except a first pick-up and they change read rates according to linear velocities of the optical disk at reading positions.

    摘要翻译： 公开了一种用于同时读取记录在光盘的不同区域上的数据的光盘播放器。 光盘播放器提供多对光学拾取和拾取定位机构。 根据从第一拾取器获得的同步信号控制光盘的旋转速度，并且第一拾取器可以通过常规方法读取记录的数据，然而，其他拾取器需要根据 各自的线速度。 因此，除了第一拾取器之外，为每个光学拾取器提供读取速度改变电路，并且它们根据读取位置处的光盘的线速度改变读取速率。

    Optical head apparatus
    33.
    发明授权
    Optical head apparatus 失效
    光头设备

    公开(公告)号：US5066138A

    公开(公告)日：1991-11-19

    申请号：US337136

    申请日：1989-04-12

    申请人： Eiichi Toide ,  Shinsuke Shikama ,  Masayuki Kubota

    发明人： Eiichi Toide ,  Shinsuke Shikama ,  Masayuki Kubota

    IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B7/00 ,  G11B11/18

    CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/0943 ,  G11B7/123 ,  G11B2007/13727

    摘要： An optical head apparatus is provided with a holographic element composed of the first grid region which splits the light beam emitted from the light source into a plurality of light beams and the second grid region which diffracts the light beams reflected from the data-recording medium on the same plane, and prevents unnecessary signals from mixing themselves into the reproduction signal by varying at least the diffraction direction or the diffraction angle of the light beams in these grid regions.The first grid region has an elliptic aperture to make the .+-. primarily condensed spot beams onto the data-recording medium being extended elliptically to the data-recording direction.The direction of the border of the four photosensitive elements of the photo detector which detects the light beams reflected from the data-recording medium coincides with the direction of the deviation of the condensed spot beams of the reflected light beam, the deviation being caused by the deviation of tracking, the variation of the wave length of the light source and the like.

    摘要翻译： 光头装置设置有由第一栅格区域构成的全息元件，该第一栅格区域将从光源发射的光束分解为多个光束，并且第二栅极区域将从数据记录介质反射的光束衍射 通过至少改变这些格栅区域中的光束的衍射方向或衍射角度来防止不必要的信号将它们自身混合到再现信号中。 第一格栅区域具有椭圆孔径，使得+/-数据记录介质上的+/-主要聚光点波长被椭圆延伸至数据记录方向。 检测从数据记录介质反射的光束的光检测器的四个感光元件的边界方向与反射光束的聚光点的偏离方向一致，偏差由 跟踪偏差，光源波长变化等。

    Process and apparatus for the recording of an information signal
    35.
    发明授权
    Process and apparatus for the recording of an information signal 失效
    用于记录信息信号的处理和装置

    公开(公告)号：US4821250A

    公开(公告)日：1989-04-11

    申请号：US883629

    申请日：1986-07-09

    申请人： Horst Redlich ,  Guenter Joschko

    发明人： Horst Redlich ,  Guenter Joschko

    IPC分类号： G11B7/26 ,  G11B3/00 ,  G11B11/16 ,  G11B11/18

    CPC分类号： G11B3/00 ,  G11B11/18

    摘要： A process and an apparatus are specified for recording a digital signal onto a recording carrier (4), in particular a signal for recording in compact disc data format, in which an engraving or cutting stylus (2) is pressed substantially by dead weight alone against the recording carrier (4) and, in operating mode, describes a path which lies beneath the undeformed surface of the recording carrier (4) during an indentation to be engraved and on or above the undistorted surface of the recording carrier (4) between two indentations, the common center of gravity position of the engraving stylus (2) and positioning element (1) connected rigidly to it remaining substantially stable in position.

    摘要翻译： 指定用于将数字信号记录到记录载体（4）上的过程和装置，特别是用于以光盘数据格式进行记录的信号，其中雕刻或切割触笔（2）被基本上仅通过自重按压而抵抗 记录载体（4），并且在操作模式中描述了在要雕刻的凹痕期间位于记录载体（4）的未变形表面下方的路径，并且在记录载体（4）的未失真表面上或上方的两个 凹痕，雕刻笔（2）和定位元件（1）的共同重心位置与其刚性连接，基本保持稳定。

    Air cushion-optical data read head
    36.
    发明授权
    Air cushion-optical data read head 失效
    气垫光学数据读头

    公开(公告)号：US4710912A

    公开(公告)日：1987-12-01

    申请号：US870217

    申请日：1986-06-02

    申请人： Hugh W. Greene ,  James D. Holder ,  James A. Knaur

    发明人： Hugh W. Greene ,  James D. Holder ,  James A. Knaur

    IPC分类号： G11B11/18 ,  G11B17/32 ,  G11B3/10

    CPC分类号： G11B17/32 ,  G11B11/18

    摘要： An air cushion-optical data read head that includes an optical pick-up system for reading data stored on the walls of an engraved V-groove disc or record, air means for causing the read head to hover above the surface of the record, and air jet means for guiding the head about the V-groove of the record.

    摘要翻译： 一种气垫光学数据读取头，包括用于读取存储在雕刻的V形槽盘或记录的壁上的数据的光学拾取系统，用于使读取头悬停在记录表面上方的空气装置，以及 用于引导头部围绕记录的V形槽的空气喷射装置。

    Magneto-fluidic recording apparatus
    37.
    发明授权
    Magneto-fluidic recording apparatus 失效
    磁流体记录装置

    公开(公告)号：US4359752A

    公开(公告)日：1982-11-16

    申请号：US199362

    申请日：1980-10-21

    申请人： Masami Nakagawa ,  Wataru Shimotsuma ,  Yoshio Kishimoto ,  Yoichi Sekine

    发明人： Masami Nakagawa ,  Wataru Shimotsuma ,  Yoshio Kishimoto ,  Yoichi Sekine

    IPC分类号： B41J2/06 ,  B41J2/065 ,  G01Q80/00 ,  G03G15/00 ,  G03G15/05 ,  G11B11/18 ,  G11B13/02 ,  G01D15/16

    CPC分类号： B82Y15/00 ,  B41J2/065

    摘要： A recording apparatus which uses magneto-fluidic material comprising a magnetic multi-stylus head arranged in parallel to oppose a recording plane, a magnet fixed to the multi-stylus head near a tip end thereof, apparatus for supplying magneto-fluidic material to at least one point of the magnet and apparatus for causing the magneto-fluidic material on the multi-stylus to selectively be flung, wherein a plurality of areas of concentration of lines of magnetic force are formed on at least one of outer surfaces of the magnet in order to stabilize the supply of the magneto-fluidic material for the comsumption of the magneto-fluidic material on the multi-stylus head due to the flying of the magneto-fluidic material.

    摘要翻译： 一种使用磁流体材料的记录装置，该磁流体材料包括平行布置成与记录平面相对置的磁性多针头，在其尖端附近固定到多触针头的磁体，至少向磁头提供磁流体材料的装置 该磁体的一个点和用于使多个触控笔上的磁流体材料选择性地被溅射的装置，其中在磁体的至少一个外表面上按顺序形成多个磁场线集中区域 以稳定磁流体材料的供应，以便由于磁流体材料的飞行而导致多触针头上的磁流体材料的消耗。

    Record carrier for storing angularly modulated signals
    39.
    发明授权
    Record carrier for storing angularly modulated signals 失效
    用于存储角度调制信号的记录载体

    公开(公告)号：US3798388A

    公开(公告)日：1974-03-19

    申请号：US3798388D

    申请日：1971-09-13

    申请人： LICENTIA GMBH

    发明人： DICKOPP G

    IPC分类号： G11B7/004 ,  G11B7/007 ,  G11B7/085 ,  G11B7/12 ,  G11B7/24 ,  G11B23/00 ,  G11B11/18 ,  G11B25/04

    CPC分类号： G11B7/24 ,  G11B7/004 ,  G11B7/007 ,  G11B7/085 ,  G11B7/12

    摘要： A method and apparatus for reproducing signals stored on a carrier in the form of undulations corresponding to the signals, the undulations generally being formed in a spiral groove. The undulations on the carrier are moved past a suitable radiation source, such as a light source, and the density of the radiation emanating from the undulations, which is a function of the curvature of the undulation, is detected by a suitable radiation detector after it passes through a suitable slit aperture arranged at a predetermined distance from the carrier surface, so that variations in the density are a function of the undulations. The undulations may be either frequency or phase modulated with respect to the signal and their amplitude can be modified as a function of their recorded wavelength in such a maner that the curved surface portions of the undulations have nearly the same focal length for all occurring wavelengths. The carrier can have at least one recording surface in which is formed a groove having a trapezoidal cross section and having its bottom surface provided with the undulations.