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    Tracking system and method for video disc player
    1.
    再颁专利
    Tracking system and method for video disc player 失效
    视频光盘播放器的跟踪系统和方法

    公开(公告)号：USRE32051E

    公开(公告)日：1985-12-17

    申请号：US619259

    申请日：1984-06-11

    申请人： Ludwig Ceshkovsky ,  Wayne R. Dakin

    发明人： Ludwig Ceshkovsky ,  Wayne R. Dakin

    IPC分类号： G11B7/08 ,  G11B7/09 ,  G11B21/10

    CPC分类号： G11B7/0941 ,  G11B21/10 ,  G11B7/08 ,  G11B7/081 ,  G11B7/0908

    摘要： A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track. FM processing means are described for reconstructing the recovered frequency modulated video information such that the ratio between the amplitude of the signals as recorded is essentially the same in the signals as recovered from the video disc member. Further servo means are described for handling the selective change of the intersection of the reading beam with the video disc member in a predetermined preferred mode of operation.

    Time base correction apparatus
    2.
    发明授权
    Time base correction apparatus 失效
    时基校正装置

    公开(公告)号：US4544957A

    公开(公告)日：1985-10-01

    申请号：US444038

    申请日：1982-11-23

    申请人： Mitsuro Moriya ,  Makoto Ichinose

    发明人： Mitsuro Moriya ,  Makoto Ichinose

    IPC分类号： G11B7/08 ,  G11B19/20 ,  G11B21/03 ,  H04N5/95 ,  H04N5/76

    CPC分类号： G11B19/20 ,  G11B21/03 ,  G11B7/081 ,  H04N5/95

    摘要： A time base correction apparatus is provided for use with a system for reproducing signals recorded on a recording medium. A first drive unit which rotates the recording medium is driven by a first control unit which receives a reference signal and controls the first drive unit to rotate the recording medium in phase synchronization with the reference signal. The high frequency component of the time base variation is corrected by a second drive unit which moves a transducer, which reproduces a signal from the recording medium, from one scanning position to another relative to the recording medium in a reverse direction of the signal track of the recording medium.

    摘要翻译： 提供了一种与用于再现记录在记录介质上的信号的系统一起使用的时基校正装置。 旋转记录介质的第一驱动单元由接收参考信号的第一控制单元驱动，并且控制第一驱动单元以与参考信号相位同步地旋转记录介质。 时基变化的高频分量通过第二驱动单元来校正，该第二驱动单元将从记录介质再现信号的换能器沿着相对于记录介质的信号轨道的相反方向从一个扫描位置移动到另一个扫描位置 记录介质。

    Video disc player having timebase correction and constant angular velocity turntable
    4.
    发明授权
    Video disc player having timebase correction and constant angular velocity turntable 失效
    具有时基校正和恒定角速度转盘的视频光盘播放器

    公开(公告)号：US4376956A

    公开(公告)日：1983-03-15

    申请号：US196280

    申请日：1980-10-14

    申请人： Kevin C. Kelleher

    发明人： Kevin C. Kelleher

    IPC分类号： G05D3/12 ,  G11B19/20 ,  G11B21/02 ,  G11B21/03 ,  H04N5/76

    CPC分类号： G11B21/03 ,  G11B7/081 ,  F17C2209/2154

    摘要： The burst component of a video signal recovered from a video disc record is applied to a timebase correction servo for controlling the tangential position of the player pick-up transducer in a sense to minimize timebase errors. The record is rotated at a constant angular velocity whereby, for a given displacement of the pick-up transducer, the servo loop gain tends to vary with the radial position of the transducer which, in turn, undesirably influences the servo sensitivity and dynamic stability. A loop gain compensator, responsive to a second component of the recovered video signal proportional to the playing time of the disc, regulates the servo gain at a substantially constant value thereby improving the loop stability and sensitivity.

    摘要翻译： 将从视盘记录恢复的视频信号的突发分量应用于时基校正伺服器，以在某种意义上控制播放器拾取换能器的切向位置，以最小化时基误差。 记录以恒定的角速度旋转，由此，对于拾取换能器的给定位移，伺服环路增益趋于随着换能器的径向位置而变化，这又不利地影响伺服灵敏度和动态稳定性。 响应于与盘的播放时间成比例的恢复的视频信号的第二分量的环路增益补偿器以大致恒定的值调节伺服增益，从而提高了环路的稳定性和灵敏度。

    Video disc player with variably biased pneumatic head
    6.
    发明授权
    Video disc player with variably biased pneumatic head 失效
    视频碟播放器与可变偏置气动头

    公开(公告)号：US3829622A

    公开(公告)日：1974-08-13

    申请号：US29989372

    申请日：1972-10-24

    申请人： MCA DISCO VISION

    发明人： ELLIOT J

    IPC分类号： G11B7/09 ,  G02B27/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/08 ,  G11B7/095 ,  G11B7/135 ,  G11B21/21 ,  H04N5/85 ,  G11B5/60

    CPC分类号： G11B7/081 ,  G11B7/0953

    摘要： A video signal playback device derives video signals from a track on a video disc using a light source and an optical path to a lens system which is supported by an air bearing at a predetermined spacing from the surface of the disc. The optical path includes a mirror which is articulated for rotational motion about an axis which shifts the point of impingement of the transmitted light beam upon the disc in the radial direction. The returned beam is directed to a single photosensitive pick-up which, provides input signals to a circuit which generates a ''''fine'''' servo control signal to drive the articulated mirror. The air bearing member includes apparatus providing a bias force that varies with the radial displacement of the transducer assembly relative to the disc center.

    Hologram recording apparatus, hologram reproducing apparatus, hologram recording method, and hologram reproducing method
    7.
    发明授权
    Hologram recording apparatus, hologram reproducing apparatus, hologram recording method, and hologram reproducing method 失效
    全息记录装置，全息图再现装置，全息图记录方法和全息图再现方法

    公开(公告)号：US07502297B2

    公开(公告)日：2009-03-10

    申请号：US11311860

    申请日：2005-12-19

    申请人： Satoru Seko ,  Kazuyuki Hirooka

    发明人： Satoru Seko ,  Kazuyuki Hirooka

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0065 ,  G11B7/081 ,  G11B7/09

    摘要： A hologram recording apparatus includes a rotating mechanism for rotating a hologram recording medium, a first light source for emitting first laser light, a modulator for modulating the intensity of the emitted first laser light to record a hologram on the hologram recording medium, a second light source for emitting second laser light with which a predetermined signal pattern is read from the rotating hologram recording medium, and a controller operable to exert control on the basis of the read signal pattern so that the intensity of the first laser light is modulated by the modulator while the first laser light is being oscillated and so that a beam spot of the first laser light is applied onto the hologram recording medium in periods in which the relative velocity between the target recording region and the beam spot becomes almost zero.

    摘要翻译： 一种全息记录装置，包括用于旋转全息图记录介质的旋转机构，用于发射第一激光的第一光源，用于调制发射的第一激光的强度以在全息图记录介质上记录全息图的调制器， 源，用于发射从旋转全息图记录介质读取预定信号图案的第二激光，以及控制器，其可操作以基于所读取的信号图案进行控制，使得第一激光的强度由调制器 同时第一激光正在振荡，使得在目标记录区域和光束点之间的相对速度变为几乎为零的时间段中，第一激光的束斑被施加到全息图记录介质上。

    Power saving system for optical disc recording/reproding apparatus
    9.
    发明申请
    Power saving system for optical disc recording/reproding apparatus 有权
    光盘记录/重放设备的节电系统

    公开(公告)号：US20020018410A1

    公开(公告)日：2002-02-14

    申请号：US09969628

    申请日：2001-10-04

    申请人： Victor Company of Japan, Ltd.

    发明人： Yasuhiro Ueki

    IPC分类号： G11B007/00

    CPC分类号： G11B20/10 ,  G11B7/081 ,  G11B7/0901 ,  G11B19/02 ,  G11B20/10527 ,  G11B2020/1074

    摘要： A power saving system of an optical recording/reproducing apparatus is provided. The optical recording/reproducing apparatus includes a temporal memory which stores reproduced data or recording data in a cyclic data storage stage and from which the stored data is read out for reproduction or recording in a cyclic data readout stage following the data storage stage. The power saving system saves part of power consumed in the apparatus in the data storage stage in a record mode of operation and in the data readout stage in a reproduce mode of operation.

    摘要翻译： 提供了一种光记录/再现装置的省电系统。 光学记录/再现装置包括一个临时存储器，其将重放的数据或记录数据存储在循环数据存储阶段中，并且在数据存储阶段之后的循环数据读出阶段中从中读出所存储的数据以便再现或记录。 功率节省系统以记录操作模式和在再现操作模式的数据读出级中节省数据存储级中的设备中消耗的功率的一部分。

    Power saving system for optical disc recording/reproducing apparatus
    10.
    发明授权
    Power saving system for optical disc recording/reproducing apparatus 有权
    光盘记录/再现装置的节能系统

    公开(公告)号：US06310848B1

    公开(公告)日：2001-10-30

    申请号：US09290393

    申请日：1999-04-13

    申请人： Yasuhiro Ueki

    发明人： Yasuhiro Ueki

    IPC分类号： G11B700

    CPC分类号： G11B19/02 ,  G11B7/081 ,  G11B7/0901 ,  G11B20/10 ,  G11B20/10527 ,  G11B2020/1074

    摘要： A power saving system of an optical recording/reproducing apparatus is provided. The optical recording/reproducing apparatus includes a temporal memory which stores reproduced data or recording data in a cyclic data storage stage and from which the stored data is read out for reproduction or recording in a cyclic data readout stage following the data storage stage. The power saving system saves part of power consumed in the apparatus in the data storage stage in a record mode of operation and in the data readout stage in a reproduce mode of operation.

    摘要翻译： 提供了一种光记录/再现装置的省电系统。 光学记录/再现装置包括一个临时存储器，其将重放的数据或记录数据存储在循环数据存储阶段中，并且在数据存储阶段之后的循环数据读出阶段中从中读出所存储的数据以便再现或记录。 功率节省系统以记录操作模式和在再现操作模式的数据读出级中节省数据存储级中的设备中消耗的功率的一部分。