Disk drive with compensation of disk eccentricity
    111.
    发明公开
    Disk drive with compensation of disk eccentricity 失效
    Platten Laufwerk mit Kompensation derExzentrizitäteiner Platte

    公开(公告)号:EP0957480A1

    公开(公告)日:1999-11-17

    申请号:EP98401163.5

    申请日:1998-05-15

    IPC分类号: G11B17/028 G11B19/20

    摘要: A device for rotating inside of a disk player and/or recorder a disk shaped data carrier which takes into account that the rotating disk may be eccentered from an imposed rotation axis. Side moving means allow the rotating disk and the fixing means to which the disk is removably fixed, to move inside said player and / or recorder in a rotation plane substantially perpendicular to an axis of rotation of said fixing means.The rotating disk and the fixing means go into a gyroscopic movement inside the player. A plurality of examples to realize the invention are described.

    摘要翻译: 一种用于在盘播放器和/或记录器内旋转的盘形数据载体的装置,其考虑到旋转盘可能从施加的旋转轴线偏心。 侧面移动装置允许旋转盘和可拆卸地固定的盘的固定装置在基本上垂直于所述固定装置的旋转轴线的旋转平面内在所述玩家和/或记录器内移动。旋转盘和固定 意味着进入玩家内部的陀螺仪运动。 描述了实现本发明的多个示例。

    FAULT CONTROL CIRCUIT FOR SWITCHED POWER SUPPLY
    113.
    发明公开
    FAULT CONTROL CIRCUIT FOR SWITCHED POWER SUPPLY 失效
    ERROR保护电路电源

    公开(公告)号:EP0938772A1

    公开(公告)日:1999-09-01

    申请号:EP97948338.0

    申请日:1997-11-12

    IPC分类号: H02M3 H02H7 H02M1

    摘要: A voltage source (RAW B+), a transformer (T1) and a switching controller (U1) are coupled for switched mode generation of a regulated output supply voltage. A switching circuit (R5, R6, R7, Q3, Q4, Z3, U3) responsive to an on/off signal (+23 V-RUN) turns the power supply on and off by establishing a conductive condition in a conductive path. A fault detector (42) establishes a non-conductive condition in a part of the conduction path responsive to an overload condition. A delay circuit (40) establishes a conductive condition in an auxiliary conduction path for a period of time after the power supply is turned on. The auxiliary conduction path becomes non-conductive when the fault detector establishes a conductive condition in the part of the conduction path. The part of the conduction path remains conductive absent an overload condition. A latch arrangement including the delay circuit maintains the non-conductive condition in the auxiliary conduction path until the power supply is turned off.

    Automatically adapting forward or reversed biased photodiode detection circuit
    115.
    发明公开
    Automatically adapting forward or reversed biased photodiode detection circuit 有权
    自动适应正向或反向偏置光电二极管检测电路

    公开(公告)号:EP0927888A1

    公开(公告)日:1999-07-07

    申请号:EP98403232.6

    申请日:1998-12-21

    IPC分类号: G01R31/28 G11B7/13

    摘要: A photodiode detection circuit is used to automatically identify a type of photodiode circuit connected to it (34, 35). The photodiode circuit comprises at least a photodiode. Once the type of photodiode circuit has been identified by applying a current to it (44) and evaluating a voltage occuring at an input of the detection circuit (45) the photodetection circuit adapts itself to it, e.g. a reverse biasing voltage is / isn't applied (48) to the photodiode of the photodiode circuit. The result is a photodiode detection circuit which uses a forward or a reversed biased photodiode. The photodiode detection circuit is now in a state to measure light falling on the photodiode. The detection circuit may be part of a light intensity monitoring and controlling circuit which allows to regulate the intensity of a laser beam in an optical disk reading / recording device.

    摘要翻译: 光电二极管检测电路用于自动识别与其连接的光电二极管电路的类型(34,35)。 光电二极管电路至少包括光电二极管。 一旦光电二极管电路的类型已通过向其施加电流(44)并且评估在检测电路(45)的输入处出现的电压而被识别,光电检测电路自身适应于它,例如, 反向偏置电压不被施加(48)到光电二极管电路的光电二极管。 其结果是使用正向或反向偏置光电二极管的光电二极管检测电路。 光电二极管检测电路现在处于测量落在光电二极管上的光的状态。 检测电路可以是光强度监视和控制电路的一部分,其允许调节光盘读取/记录装置中的激光束的强度。

    A SWITCHED-MODE POWER SUPPLY CONTROL CIRCUIT
    116.
    发明公开
    A SWITCHED-MODE POWER SUPPLY CONTROL CIRCUIT 失效
    开关电源控制电路

    公开(公告)号:EP0925637A1

    公开(公告)日:1999-06-30

    申请号:EP97942426.0

    申请日:1997-09-10

    IPC分类号: H02M3 H02M1 H04N5

    摘要: A controller for a switch mode power supply includes an undervoltage protection circuit (106a) responsive to an input supply voltage indicative signal (VZ1). The input supply voltage indicative signal is also coupled to a foldback point correction circuit (106b). The correction circuit causes a decrease in a maximum duty cycle of a control signal (VOUT) when the input supply voltage increases and is still smaller than a predetermined magnitude. A zener diode (Z1) limits the input supply voltage indicative signal in a manner to prevent a further decrease in the duty cycle when the input supply voltage exceeds the predetermined magnitude.

    Corrected servo control signal in a servo control loop
    118.
    发明公开
    Corrected servo control signal in a servo control loop 有权
    Korrigiertes Steuersignal在Servo-Regelkreis

    公开(公告)号:EP0911713A2

    公开(公告)日:1999-04-28

    申请号:EP98402558.5

    申请日:1998-10-15

    发明人: Mahr, Peter

    IPC分类号: G05B19/23

    摘要: A device and a method for obtaining a corrected servo control signal in a servo control loop take in account a dynamical behaviour of the servo control signal (43) to calculate a new extremum (44) for this signal. If the servo control signal for any reason goes beyond the extremum (44) then it is corrected by replacing it with the value of the extremum. Depending on the difference (Δ) between the servo control signal (43) and the extremum (44) the new extremum may be greater or smaller than the previous extremum value.
    The extremum may be a maximum or a minimum thus limiting the servo control in its maximum or in its minimum value.

    摘要翻译: 考虑伺服控制信号(43)的动力学行为来计算该信号的新的极值(44),用于获得伺服控制回路中的校正的伺服控制信号的装置和方法。 如果由于任何原因伺服控制信号超出极值(44),则通过将其替换为极值来进行校正。 根据伺服控制信号(43)和极值(44)之间的差(DELTA),新的极值可以大于或小于先前的极值。 极值可能是最大值或最小值,从而将伺服控制限制在最大值或最小值。

    LINKED LIST STRUCTURE ONSCREEN DISPLAY
    119.
    发明公开
    LINKED LIST STRUCTURE ONSCREEN DISPLAY 失效
    结构链接到LISTEN的画面

    公开(公告)号:EP0842582A1

    公开(公告)日:1998-05-20

    申请号:EP96925453.0

    申请日:1996-07-24

    IPC分类号: G09G5 H04N5

    摘要: An onscreen display (OSD) system includes a source (10) of a background image representative signal. An OSD (50) memory stores a sequence of blocks, each block containing data representing an OSD. Each block also includes a pointer to a next block in the sequence. An OSD generator (40) retrieves the blocks from the OSD memory in order, and generates an OSD image representative signal from the OSD representative data. A signal combiner (20) combines the background image representative signal and the OSD image represntative signal.

    Discoloration band correction system
    120.
    发明公开
    Discoloration band correction system 失效
    系统修正胶带变色

    公开(公告)号:EP0825785A2

    公开(公告)日:1998-02-25

    申请号:EP97401832.7

    申请日:1997-07-31

    IPC分类号: H04N9/29

    CPC分类号: H04N9/29

    摘要: A cathode ray tube may utilize a focus mask color-selection structure. The focus mask structure is susceptible to localized, transient short circuit events, or breakdown events. These events may be caused by conductive particulates that become free within the cathode ray tube and provide a short circuit between first and second layers of the focus mask. The breakdown events are undesirable because they may result in cross-strand currents causing mask strand magnetization that can interfere with a video image on the screen of the cathode ray tube. A rapid degaussing operation is initiated during the next subsequent vertical blanking period following detection of the breakdown event.