Method of helical scan magnetic tape recording
    1.
    发明授权
    Method of helical scan magnetic tape recording 失效
    螺旋扫描磁带记录方法

    公开(公告)号:US5644675A

    公开(公告)日:1997-07-01

    申请号:US410417

    申请日:1995-03-27

    摘要: A time coding system of high resolution for a digital audio and video recording system is disclosed. Various methods of structuring: time code for recording are disclosed which enable time code reading at high tape transport speeds to facilitate automatic search/forward and reverse. A time and control code generator for video recording and replay use comprises a pulse generator generating a pulse having a television frame frequency repetition rate. A source of a time code signal is related to the television frame frequency, and comprises data bits representing hours minutes seconds and frames. A pulse position modulation means is coupled to the pulse and in response to the data its representing hours minutes seconds, modulates a trailing edge of the pulse to a first position responsive to the data bits having a logical 1 value and modulates the trailing edge to a second position responsive to the data bits having a logical 0 value. A generating is means coupled to the data bits representing frames and generates a first signal frequency responsive to the frame data bits having a logical 0 value and a second signal frequency responsive to the frame data bits having a logical 1 value. The second frequency is double the first frequency. The first and second frequencies are added symmetrically to the trailing edge to maintain the modulated positions.

    摘要翻译: 公开了一种用于数字音频和视频记录系统的高分辨率的时间编码系统。 各种结构方法:公开了用于记录的时间码,其使得能够以高磁带传输速度读取时间码,以便于自动搜索/正向和反向。 用于视频记录和重放使用的时间和控制代码发生器包括产生具有电视帧频率重复率的脉冲的脉冲发生器。 时间码信号的来源与电视帧频有关,并且包括表示小时分钟秒和帧的数据比特。 脉冲位置调制装置被耦合到脉冲并且响应于其表示小时分钟秒的数据,响应于具有逻辑1值的数据位将脉冲的后沿调制到第一位置,并将后沿调制为 响应于具有逻辑0值的数据位的第二位置。 生成是耦合到表示帧的数据位的装置,并响应于具有逻辑0值的帧数据位和响应于具有逻辑1值的帧数据位产生第二信号频率而生成第一信号频率。 第二个频率是第一个频率的两倍。 第一和第二频率对称地添加到后缘以保持调制位置。

    Combined longitudinal and transversal tracking
    2.
    发明授权
    Combined longitudinal and transversal tracking 失效
    组合纵向和横向跟踪

    公开(公告)号:US6122134A

    公开(公告)日:2000-09-19

    申请号:US990761

    申请日:1997-12-15

    IPC分类号: G11B20/12 G11B21/10 G11B5/584

    CPC分类号: G11B21/10

    摘要: An information storage medium has at least a longitudinal bundle comprising three servo tracks (3, 4, 5). The bundle is arranged in consecutive tracking units (T(N)) of a determined longitudinal length. Surfaces of said servo tracks present either a first or a second characteristic (6, 7) and vary in size and distribution inside the tracking units. The bundles may contain longitudinally stored identification information. Methods for obtaining tracking signals indicating a transversal offset between a reading head and the bundle and for retrieving identification information are disclosed. Also methods for obtaining tracking units in which transversal tracking code is combined with distinct information are described.

    摘要翻译: 信息存储介质至少具有包括三个伺服轨道(3,4,5)的纵向束。 捆束以确定的纵向长度的连续跟踪单元(T(N))排列。 所述伺服磁道的表面呈现第一或第二特征(6,7),并且跟踪单元内的尺寸和分布变化。 捆可以包含纵向存储的标识信息。 公开了用于获得指示读取头和束之间的横向偏移并用于检索识别信息的跟踪信号的方法。 还描述了用于获得横向跟踪代码与不同信息组合的跟踪单元的方法。

    Tracking device with a coil driven actuator and a sensor coil to
determine a position of the actuator
    4.
    发明授权
    Tracking device with a coil driven actuator and a sensor coil to determine a position of the actuator 失效
    具有线圈驱动致动器和传感器线圈的跟踪装置,以确定致动器的位置

    公开(公告)号:US6167005A

    公开(公告)日:2000-12-26

    申请号:US158842

    申请日:1998-09-23

    IPC分类号: G11B7/09 G11B21/10

    CPC分类号: G11B21/10

    摘要: The invention relates to a tracking device in which a position of a coil driven actuator is determined using a sensor coil. A reference signal 12 having a determined voltage and frequency is fed to a driven coil. A position of the coil driven actuator is proportional to a distance between the driving coil and the sensor coil. The sensor coil produces an alternating voltage induced by an alternating magnetic field emitted by the driving coil. The alternating voltage is used to determine the position of the actuator.

    摘要翻译: 本发明涉及一种跟踪装置,其中使用传感器线圈确定线圈驱动致动器的位置。 具有确定的电压和频率的参考信号12被馈送到驱动线圈。 线圈驱动致动器的位置与驱动线圈和传感器线圈之间的距离成比例。 传感器线圈产生由驱动线圈发射的交变磁场感应的交流电压。 交流电压用于确定执行机构的位置。

    Circuit having a digital controller for operation of a synchronous T
motor
    5.
    发明授权
    Circuit having a digital controller for operation of a synchronous T motor 失效
    具有用于同步T电机操作的数字控制器的电路

    公开(公告)号:US5912543A

    公开(公告)日:1999-06-15

    申请号:US733421

    申请日:1996-10-18

    IPC分类号: H02P6/08 H02P1/46

    CPC分类号: H02P6/08

    摘要: Electronic circuit having a digital controller operation of a synchronous motor.Precision motors for driving, for example, a video head drum in video recorders are normally designed as externally commutated synchronous motors. These motors are driven with square-wave voltages by a digital controller (CON), whose circuitry can easily be implemented.The object of the present invention is to specify an electronic circuit of the type mentioned initially for controlling a synchronous motor, which enables good synchronism and the motor to be operated with little electrical noise.This object is achieved in that the synchronous motor is driven by sinusoidal signals, a separate control signal from the controller (CON) influencing the amplitudes of the drive signals (U1, V1, W1). A regulating signal for regulating the synchronous motor is produced by a sensor (GE) which is arranged on the synchronous motor, which regulating signal produces a fixed phase relationship between rotor revolution and drive signals. The circuit can be implemented in a simple manner and manages without any digital/analogue converters.The applications which result are, in particular, for digital video recorders and for camcorders.

    摘要翻译: 具有同步电动机的数字控制器操作的电子电路。 用于驱动的​​精密电动机,例如视频记录器中的视频磁头鼓通常被设计为外部换向同步电动机。 这些电机由数字控制器(CON)以方波电压驱动,其电路很容易实现。 本发明的目的是指定一种最初提供的用于控制同步电动机的类型的电子电路,其能够实现良好的同步性,并且电动机以小的电噪声来操作。 该目的的实现是同步电机由正弦信号驱动,来自控制器(CON)的独立控制信号影响驱动信号(U1,V1,W1)的振幅。 用于调节同步电动机的调节信号由布置在同步电动机上的传感器(GE)产生,该调节信号在转子转速和驱动信号之间产生固定的相位关系。 该电路可以以简单的方式实现,无需任何数字/模拟转换器即可进行管理。 特别是数字录像机和摄像机的应用。

    Method and circuit for producing synchronous control signals in video
recorders
    6.
    发明授权
    Method and circuit for producing synchronous control signals in video recorders 失效
    在录像机中产生同步控制信号的方法和电路

    公开(公告)号:US5911034A

    公开(公告)日:1999-06-08

    申请号:US648809

    申请日:1996-10-09

    摘要: In order to produce synchronous control signals of a video recorder, in particular of a digital video recorder, a position pulse of the scanner motor, which coincides with the beginning of the video frame, is used as time zero point. Time markers in which changes in the control signals take place are calculated starting from this time zero point. These time markers and the bit patterns occurring at these time markers are stored as data words in a data field and, for corresponding time markers, the corresponding data word is output in parallel, that is to say synchronously. A realization is possible by means of a microcontroller and a controllable output memory, the microcontroller containing the functions of capture register, timer, calculation unit and comparator.

    摘要翻译: 为了产生特别是数字录像机的录像机的同步控制信号,将扫描仪电机的与视频帧的开始一致的位置脉冲用作时间零点。 从该时间零点开始,计算控制信号发生变化的时间标记。 这些时间标记和在这些时间标记处发生的位模式被存储为数据字段中的数据字,并且对于相应的时间标记,并行地输出相应的数据字,即同步地输出。 可以通过微控制器和可控输出存储器来实现,微控制器包含捕获寄存器,定时器,计算单元和比较器的功能。

    Disc speed control device
    7.
    发明授权
    Disc speed control device 失效
    光盘速度控制装置

    公开(公告)号:US06952386B1

    公开(公告)日:2005-10-04

    申请号:US09613997

    申请日:2000-07-11

    申请人: Peter Mahr

    发明人: Peter Mahr

    IPC分类号: G11B19/28 G11B7/004

    CPC分类号: G11B19/28

    摘要: A disc speed control device for use in a disc player and/or recorder having a pick-up for reading/recording data. The device comprises an inner loop which regulates a determined disc rotation speed value received at its input and an outer loop which delivers this speed value depending on a frequency at which data is read by the pick-up. The present invention is particularly useful in multistandard disc drives which need to adjust to different disc speed modes, for example, constant angular velocity, or constant linear velocity.

    摘要翻译: 一种用于具有用于读取/记录数据的拾取器的盘播放器和/或记录器中的光盘速度控制装置。 该装置包括调节在其输入处接收到的确定的盘转速值的内循环和根据拾取器读取数据的频率传递该速度值的外循环。 本发明在需要调整到不同的盘速度模式,例如恒定角速度或恒定线速度的多标准盘驱动器中特别有用。

    Position control of optical head in a recording device
    8.
    发明申请
    Position control of optical head in a recording device 失效
    记录装置中光头的位置控制

    公开(公告)号:US20050146997A1

    公开(公告)日:2005-07-07

    申请号:US11053229

    申请日:2005-02-08

    申请人: Peter Mahr

    发明人: Peter Mahr

    IPC分类号: G11B7/085 G11B21/08

    摘要: A data player or a method in which a reading and/or writing head is positioned according to anyone of 3 methods or combinations thereof: Calculating a desirable speed curve to position the head from a first to a second position and adjust the speed of the head's movement to the desirable speed, calculating and outputting an amount of energy to a driving mechanism to move the head a determined number of steps, increasing the power applied to a driving mechanism until the head is moved for one step. The positioning may additionally be used to perform coarse positioning while the head is positioned on a track of a data medium using a fine positioning mechanism.

    摘要翻译: 一种数据播放器或其中根据3种方法或其组合中的任何一种来定位读取和/或书写头的方法:计算期望的速度曲线以将头部从第一位置到第二位置并且调整头部的速度 运动到期望的速度,计算并输出一定量的能量到驱动机构以使头移动确定的步数,增加施加到驱动机构的功率,直到头移动一步。 当头部使用精细定位机构定位在数据介质的轨道上时,定位可另外用于执行粗略定位。

    Three layer molded sail construction
    9.
    发明授权
    Three layer molded sail construction 有权
    三层成型风帆结构

    公开(公告)号:US06302045B1

    公开(公告)日:2001-10-16

    申请号:US09690575

    申请日:2000-10-17

    申请人: Peter Mahr

    发明人: Peter Mahr

    IPC分类号: B63H904

    摘要: A triangular sail is made by laminating three triangular layers of reinforced film together on a mold to provide a one piece molded sail. Each layer is made up of a plurality of triangular pieces which radiate out of one of the three corners of the sail, such that the pieces in each layer cross in the body of the sail.

    摘要翻译: 通过在模具上将三层三层增强膜层叠在一起形成三角形帆,以提供单件模制帆。 每个层由从帆的三个角中的一个中的一个辐射出的多个三角形片组成,使得每层中的片在帆的主体中交叉。

    Optimized winding drive
    10.
    发明授权
    Optimized winding drive 失效
    优化绕组驱动

    公开(公告)号:US06208096B1

    公开(公告)日:2001-03-27

    申请号:US09236959

    申请日:1999-01-25

    IPC分类号: B65H5938

    CPC分类号: G11B15/48

    摘要: In a tape transport for recording and/or reproducing signals by means of a recording medium using separate winding motors for driving the winding plates, the drive of the winding motors servo units is constructed as open-loop control devices and/or closed-loop control devices. Such servo units can advantageously be used for open-loop control and/or closed-loop control of the drive of the winding motor even during a braking operation.

    摘要翻译: 在用于通过使用单独的绕组电机驱动绕组板的记录介质来记录和/或再现信号的磁带传输中,绕组电动机伺服单元的驱动被构造为开环控制装置和/或闭环控制 设备。 这样的伺服单元即使在制动操作期间也可以有利地用于绕组电机的驱动的开环控制和/或闭环控制。