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    • 1. 发明授权
    • System and method for measuring signal deviation used in an optical recording/reproducing apparatus
    • 用于测量在光学记录/再现装置中使用的信号偏差的系统和方法
    • US07397753B2
    • 2008-07-08
    • US11140062
    • 2005-05-31
    • Jeng-Jiun ChenBor-Ruey ChenChao-Jen Chen
    • Jeng-Jiun ChenBor-Ruey ChenChao-Jen Chen
    • G11B7/00
    • G11B7/094G11B7/0903
    • A method and system for measuring the signal deviation are applied to an optical recording/reproducing apparatus. The optical recording/reproducing apparatus comprises an optical pickup head for receiving Differential Push Pull (DPP) signals reflected from an optical recording medium to trace the tracks on the surface of the optical recording medium. The DPP signal comprises a Main beam Push Pull (MPP) signal and a Sub-beam Push Pull (SPP) signal. The method firstly receives the MPP signal and the SPP signal to generate an MPP waveform and an SPP waveform separately. Then, the MPP waveform and the SPP waveform are combined to generate an amplitude waveform function. Finally, according to the amplitude waveform function, a phase difference between the MPP signal and the SPP signal is estimated. An adjusting direction can be further determined according to a relative position between the SPP waveform and the MPP waveform.
    • 用于测量信号偏差的方法和系统被应用到光学记录/再现装置。 光学记录/再现装置包括用于接收从光学记录介质反射的差分推挽(DPP)信号的光学拾取头,以跟踪光学记录介质表面上的轨迹。 DPP信号包括主波束推挽(MPP)信号和子波束推挽(SPP)信号。 该方法首先接收MPP信号和SPP信号,分别生成MPP波形和SPP波形。 然后,MPP波形和SPP波形被组合以产生幅度波形函数。 最后,根据振幅波形函数,估计MPP信号与SPP信号之间的相位差。 可以根据SPP波形和MPP波形之间的相对位置进一步确定调整方向。
    • 2. 发明申请
    • System and method for measuring signal deviation used in an optical recording/reproducing apparatus
    • 用于测量在光学记录/再现装置中使用的信号偏差的系统和方法
    • US20050265147A1
    • 2005-12-01
    • US11140062
    • 2005-05-31
    • Jeng-Jiun ChenBor-Ruey ChenChao-Jen Chen
    • Jeng-Jiun ChenBor-Ruey ChenChao-Jen Chen
    • G11B5/09G11B7/00G11B7/09
    • G11B7/094G11B7/0903
    • A method and system for measuring the signal deviation are applied to an optical recording/reproducing apparatus. The optical recording/reproducing apparatus comprises an optical pickup head for receiving Differential Push Pull (DPP) signals reflected from an optical recording medium to trace the tracks on the surface of the optical recording medium. The DPP signal comprises a Main beam Push Pull (MPP) signal and a Sub-beam Push Pull (SPP) signal. The method firstly receives the MPP signal and the SPP signal to generate an MPP waveform and an SPP waveform separately. Then, the MPP waveform and the SPP waveform are combined to generate an amplitude waveform function. Finally, according to the amplitude waveform function, a phase difference between the MPP signal and the SPP signal is estimated. An adjusting direction can be further determined according to a relative position between the SPP waveform and the MPP waveform.
    • 用于测量信号偏差的方法和系统被应用到光学记录/再现装置。 光学记录/再现装置包括用于接收从光学记录介质反射的差分推挽(DPP)信号的光学拾取头,以跟踪光学记录介质表面上的轨迹。 DPP信号包括主波束推挽(MPP)信号和子波束推挽(SPP)信号。 该方法首先接收MPP信号和SPP信号,分别生成MPP波形和SPP波形。 然后,MPP波形和SPP波形被组合以产生幅度波形函数。 最后,根据振幅波形函数,估计MPP信号与SPP信号之间的相位差。 可以根据SPP波形和MPP波形之间的相对位置进一步确定调整方向。
    • 8. 发明授权
    • Method for reducing the rotation speed of an automatic ball balancing system of an optical disk reading device
    • 一种用于降低光盘读取装置的自动球平衡系统的转速的方法
    • US07123573B2
    • 2006-10-17
    • US10411798
    • 2003-04-11
    • Lih-Hwa KuoJeng-Jiun ChenBor-Ruey Chen
    • Lih-Hwa KuoJeng-Jiun ChenBor-Ruey Chen
    • G11B23/00
    • G11B33/08G11B5/5521G11B25/043
    • An automatic ball balancing system for an optical disk reading device has a rotor mechanism that has a concave annular track formed on the rotor, with at least one ball placed on the annular track to perform automatic balancing. A surface with a low friction coefficient is also provided on the annular track in the gravity direction of the balls to reduce the movement resistance between the ball(s) and the annular track. In the meantime, the stable rotation speed of the rotor and the system phase angle of the ball(s) when the rotor reaches a stable rotation speed are also changed. One way of effecting this change is to bond or coat a material with a low friction coefficient on the annular track in the gravity direction of the balls. In this way, the balancing effect of the automatic ball balancing system can be improved.
    • 用于光盘读取装置的自动球平衡系统具有转子机构,其具有形成在转子上的凹形环形轨道,至少一个球放置在环形轨道上以执行自动平衡。 在球的重力方向上的环形轨道上还设置有低摩擦系数的表面,以减小球和环形轨道之间的运动阻力。 同时,当转子达到稳定转速时,转子的稳定转速和球的系统相位角也发生变化。 实现这种变化的一种方式是在球的重力方向上在环形轨道上粘合或涂覆具有低摩擦系数的材料。 这样,可以提高自动球平衡系统的平衡效果。
    • 9. 发明授权
    • Heat dissipation member for an optical disk drive
    • 用于光盘驱动器的散热构件
    • US07210151B2
    • 2007-04-24
    • US10889387
    • 2004-07-12
    • Chih-Chung HsiehJeng-Jiun Chen
    • Chih-Chung HsiehJeng-Jiun Chen
    • G11B33/14
    • G11B33/142
    • The present invention provides a heat dissipation member for use in the optical disk drive. The present invention includes an outer frame and a chassis. The chassis has a drive module, a pickup module and two guide rods. A heat dissipation member is disposed on the pickup module and is in contact with a laser diode of the pickup module. When the drive module spins the optical disk at a rotational speed, an air flow is produced due to spinning of optical disk. A part of the air flow is directed to flow through the laser diode by the heat dissipation member so that excess heat generated by the laser diode is efficiently dissipated.
    • 本发明提供一种用于光盘驱动器的散热构件。 本发明包括外框和底架。 底盘具有驱动模块,拾取模块和两个导杆。 散热构件设置在拾取模块上并与拾取模块的激光二极管接触。 当驱动模块以旋转速度旋转光盘时,由于光盘旋转而产生气流。 空气流的一部分被引导通过散热构件流过激光二极管,使得由激光二极管产生的多余的热量被有效地消散。