公开(公告)号：US08279730B2

公开(公告)日：2012-10-02

申请号：US12971141

申请日：2010-12-17

申请人： Akinori Yuba

发明人： Akinori Yuba

IPC分类号： G11B7/00

CPC分类号： G11B19/042 ,  G11B19/26 ,  G11B19/28

摘要： An optical disc apparatus for performing both the operation of writing data on an optical disc and the operation of reading data that is stored on the optical disc includes a motor for rotating the optical disc, an optical pickup, which irradiates the optical disc with a light beam and detects the light that has been reflected from the optical disc, an evaluation section for obtaining an indicative parameter of the distortion of a signal waveform representing the light reflected from a data stored part on the optical disc while the optical disc is being rotated by the motor, and a control section for changing the number of revolutions of the optical disc Per unit time if a variation in the indicative parameter of the distortion per rotation of the optical disc exceeds a threshold value while the optical disc is being rotated by the motor.

摘要翻译： 一种用于执行在光盘上写入数据的操作和读取存储在光盘上的数据的操作的光盘装置包括：用于旋转光盘的电动机，用光照射光盘的光学拾取器 光束并检测从光盘反射的光，评估部分，用于在光盘旋转期间获得表示从光盘上的数据存储部分反射的光的信号波形的失真的指示参数 电动机以及控制部分，用于当光盘由电动机旋转时光盘的每次旋转指示参数的指示参数的变化超过阈值时，每单位时间改变光盘的转数 。

公开(公告)号：US20110149703A1

公开(公告)日：2011-06-23

申请号：US12971141

申请日：2010-12-17

申请人： Akinori YUBA

发明人： Akinori YUBA

IPC分类号： G11B19/00

CPC分类号： G11B19/042 ,  G11B19/26 ,  G11B19/28

摘要： The present invention provides an optical disc apparatus that changes the number of revolutions of an optical disc on sensing resonance. The optical disc apparatus of the present invention performs both the operation of writing data on the optical disc 10 and the operation of reading data that is stored on the disc 10. The apparatus includes: a motor 12 for rotating the disc 10; an optical pickup 14, which irradiates the disc 10 with a light beam and detects the light reflected from the disc 10; an evaluation section 16 for obtaining an indicative parameter of the distortion of a signal waveform representing the light reflected from a data stored part on the disc 10 while the disc 10 is being rotated by the motor 12; and a control section 18 for changing the number of revolutions of the disc 10 per unit time if a variation in the indicative parameter of the distortion per rotation of the disc 10 exceeds a threshold value while the disc 10 is being rotated by the motor 12.

摘要翻译： 本发明提供一种光盘装置，其在检测谐振时改变光盘的转数。 本发明的光盘装置执行在光盘10上写入数据的操作和读取存储在盘10上的数据的操作。该装置包括：用于旋转盘10的马达12; 光学拾取器14，其用光束照射盘10并检测从盘10反射的光; 评估部分16，用于在盘10被电动机12旋转的同时获得表示从盘10上的数据存储部分反射的光的信号波形的失真的指示参数; 以及控制部分18，用于当盘10被电动机12旋转时，如果每次旋转的盘10的失真的指示参数的变化超过阈值，则每单位时间改变盘10的转数。

公开(公告)号：US07343463B2

公开(公告)日：2008-03-11

申请号：US10417405

申请日：2003-04-15

申请人： Toshio Kakihara ,  Hiromi Nishimiya ,  Tomoyuki Oyama ,  Akinori Yuba

发明人： Toshio Kakihara ,  Hiromi Nishimiya ,  Tomoyuki Oyama ,  Akinori Yuba

IPC分类号： G06F12/00

CPC分类号： G06F3/0659 ,  G06F3/061 ,  G06F3/0674

摘要： An executable command selection system and method are provided. A command is selected as the next-to-be-executed command when the execution waiting time for the command is less than or equal to a predetermined reference time. In addition, the command selected as the next-to-be-executed command has an execution waiting time greater than or equal to a scanning time. Once a command is selected as the next-to-be-executed command, calculation of execution waiting times for subsequent commands in the command queue stops. In this manner, when the number of commands in the command queue exceeds a predetermined number, the method of the present invention improves the efficiency of command execution for a storage device.

摘要翻译： 提供了可执行命令选择系统和方法。 当命令的执行等待时间小于或等于预定的参考时间时，将命令作为下一个待执行命令。 此外，作为下一个待执行命令选择的命令具有大于或等于扫描时间的执行等待时间。 一旦命令被选作下一个待执行命令，则停止命令队列中后续命令的执行等待时间的计算。 以这种方式，当命令队列中的命令数量超过预定数量时，本发明的方法提高了存储设备的命令执行效率。

公开(公告)号：US06411056B1

公开(公告)日：2002-06-25

申请号：US09670770

申请日：2000-09-27

申请人： Gaku Ikedo ,  Naoyuki Kagami ,  Akinori Yuba

发明人： Gaku Ikedo ,  Naoyuki Kagami ,  Akinori Yuba

IPC分类号： G05B1118

CPC分类号： G11B19/28

摘要： A system and method for providing rotation control stability within a disk drive. In accordance with the system of the present invention, a disk storage medium on which information is recorded is driven to rotate by a multiphase-phase DC servomotor. An actuator is utilized for loading and unloading the head to and from the disk storage medium. A load/unload controller commands the actuator to load or unload said head. In order to effectively compensate for an abrupt change in load on the servomotor caused by loading the head onto the disk storage medium, a slew rate switching unit is utilized to alter a slew rate of current supplied to the three-phase DC servomotor, based on a loading start command issued by the load/unload controller.

摘要翻译： 一种用于在盘驱动器内提供旋转控制稳定性的系统和方法。 根据本发明的系统，通过多相DC伺服电动机驱动记录有信息的盘存储介质。 致动器用于将磁头装载到磁盘存储介质和从磁盘存储介质卸载磁头。 加载/卸载控制器命令执行器加载或卸载所述头。 为了有效地补偿将磁头装载到磁盘存储介质上而导致的伺服电机的负载突然变化，使用压摆率切换单元来改变提供给三相直流伺服电动机的电流的转换速率，基于 由加载/卸载控制器发出的加载启动命令。

公开(公告)号：US06831809B2

公开(公告)日：2004-12-14

申请号：US10086204

申请日：2002-02-27

申请人： Naoyuki Kagami ,  Kenji Okada ,  Tetsuo Semba ,  Akira Tokizono ,  Hiroshi Uchida ,  Akinori Yuba

发明人： Naoyuki Kagami ,  Kenji Okada ,  Tetsuo Semba ,  Akira Tokizono ,  Hiroshi Uchida ,  Akinori Yuba

IPC分类号： G11B5596

CPC分类号： G11B5/59622

摘要： A control arrangement having a feedforward system and a feedback system, a control model for generating reference position data from a feedforward control signal is separated into an original control model and a compensation filter. Gain of the feedforward control signal is compensated by a gain compensation circuit to form a feedforward control signal after compensation. The reference position data is input to a feedback controller, and a feedback control signal and feedforward control signal are input to a control object. Coefficients of the compensation filter and the gain compensation circuit are compensated on the basis of a head position trajectory obtained by actual seek operation.

摘要翻译： 具有前馈系统和反馈系统的控制装置，用于从前馈控制信号产生参考位置数据的控制模型被分离成原始控制模型和补偿滤波器。 前馈控制信号的增益由增益补偿电路补偿，以在补偿后形成前馈控制信号。 参考位置数据被输入到反馈控制器，反馈控制信号和前馈控制信号被输入到控制对象。 补偿滤波器和增益补偿电路的系数基于通过实际寻道操作获得的磁头位置轨迹进行补偿。