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    • 5. 发明授权
    • Optical recording/reproducing method and apparatus for optical storage media
    • 用于光学存储介质的光学记录/再现方法和装置
    • US06738328B2
    • 2004-05-18
    • US10198091
    • 2002-07-19
    • Hiroshi Koide
    • Hiroshi Koide
    • G11B509
    • G11B20/1403G11B7/006G11B20/10009G11B20/10222G11B2020/10944G11B2020/1287
    • The object of the present invention is to provide an optical recording/reproducing method and apparatus that accurately record data blocks onto an optical disk in a seamless formation while effectively reducing the deterioration of recording properties of the disk. The recording properties of the disk may deteriorate when data is repeatedly written to a same data block of the disk. In the optical recording/reproducing method and apparatus of the invention, a read clock signal is generated in response to recorded data on an optical storage medium. A write clock signal is generated in response to a position information carrying signal detected from the storage medium. A phase difference between the read clock signal and the write clock signal is detected when writing data blocks to the storage medium in a seamless formation. It is determined whether a phase of the write clock signal is delayed or advanced based on the phase difference. In the optical recording/reproducing method and apparatus, a control signal is produced to adjust a phase of the position information carrying signal.
    • 本发明的目的是提供一种光学记录/再现方法和装置,其能够以有效地减少盘的记录特性的劣化的方式将数据块精确地记录在光盘上。 当数据被重复写入到盘的相同数据块时,盘的记录属性可能劣化。 在本发明的光记录/再现方法和装置中,响应于光存储介质上的记录数据产生读时钟信号。 响应于从存储介质检测到的位置信息携带信号产生写入时钟信号。 当以无缝形式将数据块写入存储介质时,检测读时钟信号和写时钟信号之间的相位差。 基于相位差确定写入时钟信号的相位是延迟还是前进。 在光学记录/再现方法和装置中,产生控制信号以调整位置信息携带信号的相位。
    • 7. 发明授权
    • Optical recording and reproducing methods for optical disk
    • 光盘的光学记录和再现方法
    • US06487149B1
    • 2002-11-26
    • US09413861
    • 1999-10-07
    • Kenya YokoiAkihiko ShimizuHiroshi Koide
    • Kenya YokoiAkihiko ShimizuHiroshi Koide
    • G11B509
    • G11B7/131G11B7/00456G11B7/0053G11B7/0906G11B7/1267G11B7/24085
    • An optical recording method for an optical disk having a disk surface portion in which prepits, indicative of preformat information, are formed. In the optical recording method, a portion of a data signal which matches one of the prepits and corresponds to a write mark radially adjacent to one of the prepits is detected. Marks are recorded along a track of the disk by selectively using one of an optimal recording power and a proper recording power level, in accordance with the non-match portion or the match portion of the data signal. A radial width of the marks recorded in accordance with the match portion of the data signal is smaller than a radial width of the marks recorded in accordance with the non-match portion of the data signal. An optical reproducing method is adapted to accurately detect a wobble signal and a prepit signal from the optical disk to which data is recorded by the above optical recording method. Further, a wobble/prepit detection method for optical recording and reproduction is adapted to accurately detect the wobble signal and the prepit signal from the optical disk.
    • 一种具有光盘表面部分的光盘的光学记录方法,其中形成了表示预格式化信息的预凹坑。 在光学记录方法中,检测与一个预凹坑匹配并对应于与其中一个预凹坑径向相邻的写入标记的数据信号的一部分。 根据数据信号的不匹配部分或匹配部分,通过选择性地使用最佳记录功率和适当的记录功率电平中的一个,沿着盘的轨道记录标记。 根据数据信号的匹配部分记录的标记的径向宽度小于根据数据信号的不匹配部分记录的标记的径向宽度。 光学再现方法适用于通过上述光学记录方法准确地检测来自记录了数据的光盘的摆动信号和预凹坑信号。 此外,用于光学记录和再现的摆动/预坑检测方法适于精确地检测来自光盘的摆动信号和预凹坑信号。
    • 9. 发明授权
    • Objective lens driving apparatus for driving an objective lens of an optical disk drive
    • 用于驱动光盘驱动器的物镜的物镜驱动装置
    • US06343053B1
    • 2002-01-29
    • US09382585
    • 1999-08-25
    • Goichi AkanumaHiroshi Koide
    • Goichi AkanumaHiroshi Koide
    • G11B712
    • G11B7/0956G11B7/0933G11B7/0935
    • An objective lens driving apparatus having a focusing coil and a tracking coil arranged in a parallel relationship with a thin, flat shape so that both the focusing coil and the tracking coil can be moved by a single flat magnet. An objective lens supporting member supports the objective lens, and is movably supported on a stationary member. A drive motor is provided at least one side of the objective lens supporting member. A yoke is fixed to the stationary member, and a drive magnet is mounted to the yoke. The drive magnet has a flat surface parallel to both the focusing direction and the tracking direction, the flat surface having four single-pole areas each of which is magnetized in a direction perpendicular to the flat surface. A drive coil assembly including the focusing coil and the tracking coil is mounted on the objective lens supporting member. The drive magnet assembly has a flat shape so that the drive coil assembly faces the flat surface of the drive magnet in parallel relationship with a small air gap therebetween.
    • 一种具有聚焦线圈和跟踪线圈的物镜驱动装置,该跟踪线圈与薄扁平形状平行地布置,使得聚焦线圈和跟踪线圈都可以通过单个平坦磁体移动。 物镜支撑构件支撑物镜,并且可移动地支撑在固定构件上。 驱动马达设置在物镜支承件的至少一侧。 磁轭固定在固定部件上,驱动磁铁安装在磁轭上。 驱动磁体具有与聚焦方向和跟踪方向平行的平坦表面,平坦表面具有四个单极区域,每个区域在垂直于平坦表面的方向上被磁化。 包括聚焦线圈和跟踪线圈的驱动线圈组件安装在物镜支撑构件上。 驱动磁体组件具有平坦的形状,使得驱动线圈组件与驱动磁体的平坦表面平行地与它们之间的小气隙平行。
    • 10. 发明授权
    • Control system for reciprocating drive motor
    • 往复式驱动电机控制系统
    • US4591767A
    • 1986-05-27
    • US728373
    • 1985-04-29
    • Hiroshi Koide
    • Hiroshi Koide
    • H02P7/00H02P7/29H02P5/00
    • H02P7/2913H02P7/04H02P7/05Y10S388/902Y10S388/909Y10S388/912
    • A control system for a reciprocating drive motor includes a phase comparator which determines a difference in phase between pulses synchronous with the rotation of a motor and reference pulses whose period corresponds to a specified velocity, to produce a pulse while any phase difference exists and in accordance with the advancement/retardation of the phase. A charge pump circuit is connected between the phase comparator and a loop filter of the control system to produce a voltage which is zero level when the phase difference is zero, and positive (negative) or negative (positive) with respect to the zero level in accordance with the advancement/retardation of the phase. Until the motor enters a constant velocity control mode, the output of the loop filter is maintained zero level by switching means. In a constant velocity control mode, while the phase difference is zero (meaning that the motor is in rotation at a specified velocity), the output voltages of the charge pump and loop filter are kept zero level regardless of the specified velocity. When the operation mode shifts from a start mode to a constant velocity control mode, the output voltage of the loop filter is held zero level regardless of the specified velocity. The control system further includes compensation voltage supply means for energizing the motor with a current large enough to overcome frictional forces of a system which is driven by the motor.
    • 用于往复式驱动电动机的控制系统包括相位比较器,其确定与电动机的旋转同步的脉冲与其周期对应于指定速度的参考脉冲之间的相位差,以产生脉冲,同时存在任何相位差 随着相位的进步/延迟。 电荷泵电路连接在相位比较器和控制系统的环路滤波器之间,以产生相位差为零时为零电平的电压,相对于零电平为正(负)或负(正) 根据相位的进步/延迟。 直到电机进入恒速控制模式,通过开关装置使环路滤波器的输出保持为零电平。 在恒定速度控制模式下,当相位差为零(意味着电机以指定速度旋转时),电荷泵和环路滤波器的输出电压保持零电平,而不考虑指定的速度。 当操作模式从起动模式转换到恒速控制模式时,环路滤波器的输出电压保持为零电平,而不管指定的速度如何。 该控制系统还包括补偿电压供给装置,用于以足够大的电流向马达供电以克服由马达驱动的系统的摩擦力。