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    • 3. 发明授权
    • Optical disk drive and method for counting the number of tracks on an
optical disk
    • 光盘驱动器和计数光盘上的轨道数的方法
    • US5199017A
    • 1993-03-30
    • US757775
    • 1991-09-11
    • Naoyuki KagamiHiroaki KuboKeiichi Okada
    • Naoyuki KagamiHiroaki KuboKeiichi Okada
    • G11B7/085
    • G11B7/08541
    • The invention is a positive peak level comparator for generating a positive peak pulse when a TES (Tracking Error Signal) is higher than a predetermined positive level, a negative peak level comparator for generating a negative peak pulse when the TES is lower than a predetermined negative level, and a logic circuit for generating an output pulse when said positive peak pulse and said negative peak pulse have been alternately input thereto. The arrangement prevents the TES from being miscounted even if the TES is distrubed due to the occurrence of, for example, a noise at a level close to either said predetermined positive level or said predetermined negative level and either said peak pulse or said negative pulse is successively generated.
    • 本发明是一个正峰值电平比较器,用于当TES(跟踪误差信号)高于预定的正电平时产生正峰值脉冲,当TES低于预定的负电平时产生负峰值脉冲的负峰值电平比较器 以及用于当所述正峰值脉冲和所述负峰值脉冲已被交替地输入时产生输出脉冲的逻辑电路。 即使由于发生例如接近于所述预定正电平或所述预定负电平的电平的噪声而导致TES被分配,并且所述峰值脉冲或所述负脉冲是 先后产生。
    • 5. 发明授权
    • Apparatus for controlling a optical disk drive
    • 用于控制光盘驱动器的装置
    • US5402402A
    • 1995-03-28
    • US26238
    • 1993-03-01
    • Naoyuki KagamiHiroaki KuboMakoto Takekoshi
    • Naoyuki KagamiHiroaki KuboMakoto Takekoshi
    • G11B21/10G11B7/085G11B7/09G11B7/00
    • G11B7/08517G11B7/08529G11B7/0946
    • An optical disk drive apparatus operable under track following mode and seek mode wherein, upon the detection of a track following operation error, a seek operation is initiated for seeking a new target track at a predetermined number of tracks distant from the current track. The seek operation is controlled to follow a velocity profile thus regaining control over an optical head that may have been jolted into an out of control velocity when the track following error occurred. The velocity profile provides for a reduced velocity as the target track is approached. The new target track is selected at a relatively large number of tracks distant from the current track if the head velocity is high and at a relatively small number of current tracks if the head velocity is low. If the current track is sensed to be an outer track, the new target track is selected toward the inner track and if the current track is sensed to be an inner track, the new target track is selected to be an outer track.
    • 一种光盘驱动装置,其在跟踪跟踪模式和追踪模式下可操作,其中,在检测到跟踪操作错误时,开始寻找操作,以在远离当前轨迹的预定数量的轨道上寻找新的目标轨迹。 搜索操作被控制以跟随速度分布,从而重新获得当光轨跟随误差发生时可能已经颠簸到失控速度的光学头的控制。 当目标轨迹接近时,速度分布提供了一个减小的速度。 如果头部速度较高,并且如果头部速度较低,则在相对较少数量的当前轨道上,在距离当前轨迹的相对较多数量的轨道上选择新的目标轨迹。 如果当前轨道被感测为外部轨道,则向内轨道选择新的目标轨道,并且如果当前轨道被感测为内部轨道,则将新的目标轨道选择为外部轨道。
    • 7. 发明授权
    • Optical disk drive apparatus for searching a target track
    • 用于搜索目标轨道的光盘驱动装置
    • US5339299A
    • 1994-08-16
    • US978604
    • 1992-11-19
    • Naoyuki KagamiHiroaki Kubo
    • Naoyuki KagamiHiroaki Kubo
    • G11B7/085G11B17/22
    • G11B7/08541
    • The present invention provides an optical disk drive apparatus, and a method for driving the same, which makes the most of the ability of acceleration and deceleration in an actuator in a simple system configuration to realize fast seek operation of high reliability. An optical disk drive apparatus according to the present invention provides the means for determining whether the number of tracks from a current track to a target track is smaller than the predetermined number and the means for driving the fine actuator in the tracking direction under the velocity control based on a tracking error signal if the number of tracks from the current track to the target track is smaller than the predetermined number.
    • 本发明提供了一种光盘驱动装置及其驱动方法,其以简单的系统配置最大程度地实现致动器中的加速和减速的能力,以实现高可靠性的快速寻道操作。 根据本发明的光盘驱动装置提供了用于确定从当前轨道到目标轨道的轨道数是否小于预定数量的装置,以及用于在速度控制下沿跟踪方向驱动精细致动器的装置 如果从当前轨道到目标轨道的轨道数量小于预定数量,则基于跟踪误差信号。
    • 10. 发明授权
    • Phase technique for active damping in a servo-controlled actuator
    • 伺服控制执行机构主动阻尼相位技术
    • US06614613B1
    • 2003-09-02
    • US09526261
    • 2000-03-16
    • Fu-Ying HuangNaoyuki KagamiTetsuo SembaEiji SogaShingo Tsuda
    • Fu-Ying HuangNaoyuki KagamiTetsuo SembaEiji SogaShingo Tsuda
    • G11B2110
    • G05D19/02G11B5/10G11B5/5582G11B5/59627
    • An active control mechanism and method for stabilizing a servo-controlled actuator system such as an actuator system in a data recording disk drive by compensating the vibrational modes of the actuator's arm assembly. The control mechanism has a sensing arrangement which can include one or more individual sensors attached to the actuator at locations where they generate signals in phase with the vibrational modes, and especially with all the low-frequency major vibrational modes, of the arm assembly. A control mechanism derives from the signals an adjustment signal consisting of three corrective terms—a stiffening correction, an active damping correction, and an inertia correction by a phase correction. Furthermore, high-frequency out-of-phase modes can be stabilized by appropriately shifting the phase of the signals. The adjustment signal is used in the feedback control loop to stabilize the actuator system.
    • 一种主动控制机构和方法,用于通过补偿致动器臂组件的振动模式来稳定伺服控制致动器系统,例如数据记录盘驱动器中的致动器系统。 控制机构具有感测装置,其可以包括一个或多个单独的传感器,其附接到致动器的位置,在那里它们与臂组件的振动模式,特别是与所有低频主要振动模式相同地产生信号。 控制机构从信号中获得由三个校正项组成的调整信号 - 加强校正,主动阻尼校正和通过相位校正的惯性校正。 此外,可以通过适当地移位信号的相位来稳定高频异相模式。 调节信号用于反馈控制回路以稳定执行器系统。