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    • 1. 发明授权
    • Charged particle measuring apparatus
    • 带电粒子测量仪
    • US06710352B2
    • 2004-03-23
    • US10330701
    • 2002-12-27
    • Jun KikuchiHaruhisa MatsumotoHideki KoshiishiTakashi NozakiShigeru Takehisa
    • Jun KikuchiHaruhisa MatsumotoHideki KoshiishiTakashi NozakiShigeru Takehisa
    • H01J37304
    • G01T1/38G01T1/242G01T1/247
    • A charged particle measuring apparatus discriminates the types of charged particles accurately and the energy precisely, measures high-energy charged particles precisely, and detects a failure of the apparatus to continue measurement in a mode corresponding to the failure. Outputs from first and second detectors are used as first and second addresses, respectively. The second detector includes a plurality of detectors. The output from a third detector is used as information about whether or not certain charged particles penetrate the second detector. The loss energy characteristics of charged particles to be measured are expressed in the first and second addresses. The number of times the charged particles are measured for loss energy are counted with respect to the addresses. When the series of detectors constituting the first, second, and third detectors suffers a failure, a measurement mode excluding any failed detector is employed to continue measurement.
    • 带电粒子测量装置精确地识别带电粒子的类型并精确地识别能量,精确地测量高能量带电粒子,并且以对应于故障的模式检测装置继续测量的故障。 来自第一和第二检测器的输出分别用作第一和第二地址。 第二检测器包括多个检测器。 使用来自第三检测器的输出作为关于某些带电粒子是否穿透第二检测器的信息。 要测量的带电粒子的损耗能量特性在第一和第二地址中表示。 相对于地址对带电粒子的损耗能量的测量次数进行计数。 当构成第一,第二和第三检测器的一系列检测器发生故障时,采用不包括任何故障检测器的测量模式来继续测量。
    • 4. 发明授权
    • Optical disc drive and optical disc controller
    • 光盘驱动器和光盘控制器
    • US06925037B2
    • 2005-08-02
    • US10386612
    • 2003-03-12
    • Takashi KishimotoTakeharu YamamotoYoshihiro KandaJun Kikuchi
    • Takashi KishimotoTakeharu YamamotoYoshihiro KandaJun Kikuchi
    • G11B7/085G11B7/00
    • G11B7/08529G11B7/08541
    • An optical disc drive includes: an optical head with an actuator and a photodetector; a tracking driver outputting a drive signal to the actuator; a first tracking error signal generator for generating a first tracking error signal based on an output signal of the photodetector; first and second lens position control sections for respectively outputting first and second lens position control signals to the tracking driver; and a selector for selectively supplying the first tracking error signal to the first or second lens position control section according to a moving velocity of the optical head during a seek operation. The first lens position control signal is obtained by extracting signal components, of which the frequencies are equal to or lower than a predetermined frequency, from the first tracking error signal. The second lens position control signal is obtained by extracting DC components of the first tracking error signal at on-track points thereof.
    • 光盘驱动器包括:具有致动器和光电检测器的光学头; 向所述致动器输出驱动信号的跟踪驱动器; 第一跟踪误差信号发生器,用于基于光电检测器的输出信号产生第一跟踪误差信号; 第一和第二透镜位置控制部分,用于分别向跟踪驱动器输出第一和第二透镜位置控制信号; 以及选择器,用于根据拾取操作期间光头的移动速度,选择性地将第一跟踪误差信号提供给第一或第二透镜位置控制部。 通过从第一跟踪误差信号中提取频率等于或低于预定频率的信号分量来获得第一透镜位置控制信号。 第二透镜位置控制信号通过在其轨迹点上提取第一跟踪误差信号的DC分量来获得。