专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5255253A Apparatus and method for controlling the velocity of a disk storage head 失效
标题翻译：用于控制盘存储头的速度的装置和方法
公开(公告)号：US5255253A
公开(公告)日：1993-10-19
申请号：US772725
申请日：1991-10-07
申请人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada , Makoto Takekoshi
发明人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada , Makoto Takekoshi
IPC分类号： G11B7/085 , G11B21/08 , G11B7/00
CPC分类号： G11B7/08517 , G11B21/083 , G11B7/08535
摘要： In this invention, a driving circuit for moving a head in the radial direction on the recording surface of a disk is coupled to a velocity detecting circuit for detecting the velocity at which the head moves. A velocity profile is provided for storing information on the target velocity of the head. A driving signal generating circuit is coupled to the velocity profile and the velocity detecting circuit for comparing a signal from the velocity detecting circuit with a signal from the velocity profile. The driving signal generating circuit outputs a driving signal to the driving circuit based on the result of the comparison. A controller is coupled to the driving circuit for measuring a time required for moving the head a predetermined distance at a predetermined reference value, and modifying the driving signal based on the result of the comparison. Scatter in feedback quantities or fluctuation in the driving signal during velocity control is thereby corrected.

2. 发明授权

US5199017A Optical disk drive and method for counting the number of tracks on an optical disk 失效
标题翻译：光盘驱动器和计数光盘上的轨道数的方法
公开(公告)号：US5199017A
公开(公告)日：1993-03-30
申请号：US757775
申请日：1991-09-11
申请人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada
发明人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada
IPC分类号： G11B7/085
CPC分类号： G11B7/08541
摘要： 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.
摘要翻译：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。

3. 发明授权

US5384762A Focusing servo in an optical disk drive 失效
标题翻译：在光盘驱动器中聚焦伺服
公开(公告)号：US5384762A
公开(公告)日：1995-01-24
申请号：US191738
申请日：1994-02-04
申请人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada
发明人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada
IPC分类号： G11B7/085 , G11B7/09 , G11B7/095 , G11B7/00
CPC分类号： G11B7/08529 , G11B7/08511 , G11B7/0941
摘要： An optical disk drive includes a gain control for controlling the gain of a focus servo loop in response to the seek velocity of an optical head. At a low seek velocity, the focus servo gain is reduced to minimize the influence of beam scattering on the groove of an optical disk onto a focusing error signal (FES) and a tracking error signal (TES).
摘要翻译：光盘驱动器包括用于响应于光学头的寻道速度来控制聚焦伺服环路的增益的增益控制。在低寻道速度下，降低聚焦伺服增益以最小化光束散射对光盘的凹槽对聚焦误差信号（FES）和跟踪误差信号（TES）的影响。

4. 再颁专利

USRE36864E Optical disk drive and methods for counting the number of tracks on an optical disk 失效
标题翻译：光盘驱动器以及用于对光盘上的轨道数进行计数的方法
公开(公告)号：USRE36864E
公开(公告)日：2000-09-12
申请号：US430947
申请日：1995-04-28
申请人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada
发明人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada
IPC分类号： G11B7/00
CPC分类号： G11B7/08541 , G11B7/0948
摘要： 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.
摘要翻译：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

US5249168A Method and apparatus for initializing optical disk drive apparatus 失效
标题翻译：用于初始化光盘驱动装置的方法和装置
公开(公告)号：US5249168A
公开(公告)日：1993-09-28
申请号：US755953
申请日：1991-09-06
申请人： Naoyuki Kagami , Hiroaki Kubo , Hideo Ueno
发明人： Naoyuki Kagami , Hiroaki Kubo , Hideo Ueno
IPC分类号： G11B21/08 , G11B7/085 , G11B7/09
CPC分类号： G11B7/0945 , G11B7/08529 , G11B7/08541
摘要： A method and apparatus for initializing disk drive apparatus wherein a pickup head is positioned near the mid-range of tracks on a disk by moving the head at power-on to an innermost track and thereafter moving the head outwardly. As outward movement begins, a tracking error signal is sensed to indicate a track crossing, and the number of tracks crossed are counted until the head is at the mid-range of tracks. A velocity profile is used to speed movement of the head to its destination.

6. 发明授权

US5412637A Method for putting an optical head in a stationary state and optical disk drive apparatus 失效
标题翻译：将光头置于静止状态的方法和光盘驱动装置
公开(公告)号：US5412637A
公开(公告)日：1995-05-02
申请号：US239263
申请日：1994-05-06
申请人： Naoyuki Kagami , Kohji Nakase , Hiroaki Kubo
发明人： Naoyuki Kagami , Kohji Nakase , Hiroaki Kubo
IPC分类号： C23C14/34 , C23C14/54 , G11B7/085 , H01F10/14 , H01F41/18 , G11B7/00
CPC分类号： H01F10/145 , G11B7/08529
摘要： The present invention is intended to provide a method for putting an optical head in a stationary state, and an optical disk drive apparatus for doing so without the need of a dedicated sensor for detecting an absolute position of the optical head in the radial direction of the optical disk or a device for fixing the head.
摘要翻译：本发明旨在提供一种将光头放置在静止状态的方法，以及用于这样做的光盘驱动装置，而不需要用于检测光学头在径向方向上的绝对位置的专用传感器光盘或固定头的装置。

7. 发明授权

US5402402A Apparatus for controlling a optical disk drive 失效
标题翻译：用于控制光盘驱动器的装置
公开(公告)号：US5402402A
公开(公告)日：1995-03-28
申请号：US26238
申请日：1993-03-01
申请人： Naoyuki Kagami , Hiroaki Kubo , Makoto Takekoshi
发明人： Naoyuki Kagami , Hiroaki Kubo , Makoto Takekoshi
IPC分类号： G11B21/10 , G11B7/085 , G11B7/09 , G11B7/00
CPC分类号： G11B7/08517 , G11B7/08529 , G11B7/0946
摘要： 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.
摘要翻译：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。

8. 发明授权

US5339299A Optical disk drive apparatus for searching a target track 失效
标题翻译：用于搜索目标轨道的光盘驱动装置
公开(公告)号：US5339299A
公开(公告)日：1994-08-16
申请号：US978604
申请日：1992-11-19
申请人： Naoyuki Kagami , Hiroaki Kubo
发明人： Naoyuki Kagami , Hiroaki Kubo
IPC分类号： G11B7/085 , G11B17/22
CPC分类号： G11B7/08541
摘要： 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.
摘要翻译：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。

9. 发明授权

US06937422B2 Self-monitoring and self-healing of frequency specific position errors in a data storage device 失效
标题翻译：数据存储设备中频率特定位置误差的自我监测和自我修复
公开(公告)号：US06937422B2
公开(公告)日：2005-08-30
申请号：US10289603
申请日：2002-11-07
申请人： Hien Phu Dang , Mirei Hosono , Naoyuki Kagami , Kenji Okada , Arun Sharma , Gordon James Smith , Sri M. Sri-Jayantha
发明人： Hien Phu Dang , Mirei Hosono , Naoyuki Kagami , Kenji Okada , Arun Sharma , Gordon James Smith , Sri M. Sri-Jayantha
IPC分类号： G11B21/10 , G06F11/07 , G11B5/596 , G11B19/04 , G11B19/28
CPC分类号： G11B5/596 , G11B19/04
摘要： An apparatus and method of controlling an actuator of a data storage device detect and/or correct narrowband mechanical excitations such as due to spindle bearing defects through sensing and/or rejecting disturbance frequencies associated with such narrowband mechanical excitations in an actuator control signal generated by a data storage device controller. A narrowband filter may be used to reject, from an actuator control signal generated by a data storage device controller, a disturbance frequency associated with a spindle bearing defect in a data storage device, and disposed in proximity to a zero crossover frequency associated with the data storage device controller. In addition, a peak filter disposed in a control loop of a data storage device controller may be configured to detect a spindle bearing defect in a data storage device by detecting an amplitude of a control signal in the control loop in proximity to a disturbance frequency associated with the spindle bearing defect.
摘要翻译：控制数据存储设备的致动器的装置和方法通过检测和/或排除与由这样的窄带机械激励相关联的干扰频率来检测和/或校正窄带机械激励，例如由于主轴承载缺陷而导致的致动器控制信号产生的干扰频率数据存储设备控制器。窄带滤波器可以用于从数据存储设备控制器产生的致动器控制信号中拒绝与数据存储设备中的主轴承载缺陷相关联的干扰频率，并且设置在与数据相关联的零交叉频率附近存储设备控制器此外，布置在数据存储装置控制器的控制环路中的峰值滤波器可以被配置为通过检测控制回路中与干扰频率相关联的控制信号的幅度来检测数据存储装置中的主轴承载缺陷主轴轴承缺陷。

10. 发明授权

US06614613B1 Phase technique for active damping in a servo-controlled actuator 失效
标题翻译：伺服控制执行机构主动阻尼相位技术
公开(公告)号：US06614613B1
公开(公告)日：2003-09-02
申请号：US09526261
申请日：2000-03-16
申请人： Fu-Ying Huang , Naoyuki Kagami , Tetsuo Semba , Eiji Soga , Shingo Tsuda
发明人： Fu-Ying Huang , Naoyuki Kagami , Tetsuo Semba , Eiji Soga , Shingo Tsuda
IPC分类号： G11B2110
CPC分类号： G05D19/02 , G11B5/10 , G11B5/5582 , G11B5/59627
摘要： 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.
摘要翻译：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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式