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    • 2. 发明授权
    • Time base control system with coarse and fine correction for a spindle
servo
    • 时基控制系统,对主轴伺服器进行精确校正
    • US5065385A
    • 1991-11-12
    • US372759
    • 1989-06-29
    • Yoshikiyo Konno
    • Yoshikiyo Konno
    • G11B19/28G11B20/18H04N5/95H04N5/956
    • G11B19/28G11B20/18H04N5/95H04N5/956
    • An apparatus for reading information performing a coarse adjustment of the time base by means of a phase difference between a reproduced sync signal obtained from a read signal read from a recording medium and a reference sync signal and performing a fine adjustment of the time base by writing data obtained by sampling the read signal according to a write clock signal being obtained based on the reproduced sync signal into a memory sequentially from a predetermined address according to a write count starting signal being in synchronism with the reproduced sync signal, and subsequently, reading out the data sequentially from the predetermined address according to a read count starting signal being in synchronism with a spindle reference signal whose phase is changed according to a jump command, in which it is adapted such that, when the time interval between generation of either one of the write count starting signal and the read count starting signal and generation of the other one becomes less than a predetermined period, the phase of the reference sync signal is adjusted to have a predetermined phase difference with the phase of the spindle reference signal.
    • 一种用于读取通过从从记录介质读取的读取信号获得的再现的同步信号与基准同步信号之间的相位差来执行时基的粗调的信息的装置,并通过写入执行时基的微调 根据与再现的同步信号同步的写入计数开始信号,根据从再现的同步信号获得的写入时钟信号,将读取信号从预定的地址顺序地取出到存储器中而获得的数据,然后读出 根据读计数开始信号,从与该主相位信号同步的预定地址顺序地输出数据,该主轴参考信号的相位根据跳转指令而改变,其中适配使得当生成任一个 写计数启动信号和读计数开始信号,另一个的生成bec 小于预定周期时,参考同步信号的相位被调整为与主轴参考信号的相位具有预定的相位差。
    • 3. 发明授权
    • Control apparatus for a linear motor for driving a pickup
    • 用于驱动拾取器的线性电动机的控制装置
    • US4937510A
    • 1990-06-26
    • US256799
    • 1988-10-12
    • Yoshikiyo KonnoTakashi Suzuki
    • Yoshikiyo KonnoTakashi Suzuki
    • G05D3/12G11B7/085G11B21/08H02P25/06
    • G11B7/08529G11B21/085G11B7/08517G11B7/08582
    • A control apparatus for a linear motor for driving a pickup of an information storage/readout apparatus with which the pickup can be moved more quickly and accurately to a desired target position. A slider for supporting the pickup is provided which is movable in a straight line. A magnetic circuit for forming a magnetic gap extends in the moving direction of the slider. A moving coil is mounted on the slider having at least a portion located within the magnetic gap. The voltage induced across the moving coil is detected to product a signal indicative of the velocity of the pickup. A velocity feedback loop feeds back the detected voltage to a driving source of the coil. The value of the feedback coefficient of the velocity feedback loop is set in accordance with the operating mode of the apparatus.
    • 一种用于驱动信息存储/读出装置的拾取器的线性电动机的控制装置,其中拾取器可以更快速和准确地移动到期望的目标位置。 提供用于支撑拾取器的滑块,其可以在直线上移动。 用于形成磁隙的磁路在滑块的移动方向上延伸。 一个移动线圈安装在滑块上,该滑块具有位于磁隙内的至少一部分。 检测到跨越运动线圈感应的电压以产生指示拾取器的速度的信号。 速度反馈回路将检测到的电压反馈到线圈的驱动源。 速度反馈回路的反馈系数的值根据设备的运行模式设定。
    • 4. 发明授权
    • Device and method for controlling movement of focusing lens for optical
disk reading apparatus
    • 用于控制光盘读取装置的聚焦透镜的移动的装置和方法
    • US4703466A
    • 1987-10-27
    • US667798
    • 1984-11-01
    • Yoshikiyo Konno
    • Yoshikiyo Konno
    • G02B7/28G11B7/09G11B7/00
    • G11B7/0945
    • A device and method for controlling the movement of a focusing lens of an apparatus for reading an optical disk in which the focusing lens is positively prevented from striking the surface of the disk. The presence or absence of the establishment of a focus servo control mode is detected when the focusing lens is moved from a most wide position to the vicinity of the normal operative position. If the focus servo control mode is not established when the focusing lens has been moved to the vicinity of the normal operative position, the focusing lens is then moved away from the disk. Then, the focusing lens is moved towards the disk one more time, and the procedure is repeated.
    • 用于控制用于读取光盘的装置的聚焦透镜的运动的装置和方法,其中可靠地防止聚焦透镜撞击盘的表面。 当聚焦透镜从最宽的位置移动到正常操作位置附近时,检测是否存在聚焦伺服控制模式的建立。 如果当聚焦透镜已经移动到正常操作位置附近时聚焦伺服控制模式未被建立,则聚焦透镜然后从盘移开。 然后,聚焦透镜再次向盘移动一次,并重复该过程。
    • 7. 发明授权
    • Device for controlling the movement of a focal point of a light beam
used for detecting recorded information
    • 用于控制用于检测记录信息的光束的焦点移动的装置
    • US4733066A
    • 1988-03-22
    • US915896
    • 1986-10-06
    • Yoshikiyo KonnoTakashi Suzuki
    • Yoshikiyo KonnoTakashi Suzuki
    • G11B7/085G01J1/20
    • G11B7/08511
    • A device for controlling the movement of a focal point of a light beam for detecting recorded information on a recording medium, comprises a focus actuator connected to a focal lens for focusing the light beam on the recording medium, a drive amplifier for generating a drive current of the focus actuator, a photo detector for generating a focus error signal, a starting signal generating means for generating a starting signal, and a switching means for selectively applying either the focus error signal or the starting signal to the drive amplifier. The circuit construction and the stability of the operating characteristic are simplified by using a ramp signal whose level increases with time, as the starting signal.
    • 一种用于控制用于检测记录介质上的记录信息的光束焦点的运动的装置,包括连接到用于将光束聚焦在记录介质上的聚焦透镜的聚焦致动器,用于产生驱动电流的驱动放大器 的焦点致动器,用于产生聚焦误差信号的光电检测器,用于产生起始信号的起始信号产生装置,以及用于选择性地将焦点误差信号或起始信号施加到驱动放大器的开关装置。 通过使用电平随时间增加的斜坡信号作为启动信号,简化了电路结构和工作特性的稳定性。