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1. 发明授权

US06295256B1 Focusing bias adjusting apparatus and method in optical recording medium playing apparatus 失效
标题翻译：聚焦偏差调节装置和方法在光记录介质播放装置中
公开(公告)号：US06295256B1
公开(公告)日：2001-09-25
申请号：US09577626
申请日：2000-05-25
申请人： Yuichi Kimikawa , Motoi Kimura , Hitoshi Yamazaki , Alex Bradshaw , Morio Nozaki
发明人： Yuichi Kimikawa , Motoi Kimura , Hitoshi Yamazaki , Alex Bradshaw , Morio Nozaki
IPC分类号： G11B700
CPC分类号： G11B7/094 , G11B7/0908 , G11B7/0956
摘要： A focusing bias adjusting apparatus in an optical recording medium playing apparatus, in which a focusing bias adjustment is executed to remove an offset component in a focusing error signal based on each output signal of a split type photodetector in an optical pickup and, thereafter, a tilt adjustment is executed to an optical system so as to maximize a read signal serving as a sum signal of the output signals of the photodetector in order to compensate a tilt angle which is defined by a normal at the irradiating position of a laser beam from the optical pickup on the recording surface of an optical recording medium and the optical axial direction of the laser beam. When the tilt adjusting operation of the optical system of the optical pickup is performed after completion of the focusing bias adjustment, the focusing bias adjustment is executed again.
摘要翻译：一种光记录介质播放装置中的聚焦偏移调节装置，其中执行聚焦偏置调整以基于光学拾取器中的分离型光电检测器的每个输出信号去除聚焦误差信号中的偏移分量，之后，对光学系统执行倾斜调整，以使作为光电检测器的输出信号的和信号的读取信号最大化，以补偿由来自该光电检测器的激光束的照射位置处的法线限定的倾斜角光学记录介质的记录表面上的光学拾取器和激光束的光轴方向。当在聚焦偏差调整完成之后执行光学拾取器的光学系统的倾斜调节操作时，再次执行聚焦偏置调整。

2. 发明授权

US06552984B1 Liquid crystal tilt servo apparatus 失效
标题翻译：液晶倾斜伺服装置
公开(公告)号：US06552984B1
公开(公告)日：2003-04-22
申请号：US09546282
申请日：2000-04-10
申请人： Hitoshi Yamazaki , Morio Nozaki , Takeshi Sato , Yuichi Kimikawa , Motoi Kimura
发明人： Hitoshi Yamazaki , Morio Nozaki , Takeshi Sato , Yuichi Kimikawa , Motoi Kimura
IPC分类号： G11B700
CPC分类号： G11B7/13927 , G11B7/0956 , G11B7/1369
摘要： A liquid-crystal tilt servo apparatus in which a reference voltage generating circuit is unnecessary for a liquid-crystal driving circuit and which has a simple circuit configuration and high reliability is realized. The liquid-crystal driving circuit has a DC removing circuit for removing a DC component of a driving signal generated on the basis of a tilt error correction control signal from a control unit and supplying a resultant signal to a liquid crystal device.
摘要翻译：实现了液晶驱动电路不需要基准电压产生电路并且具有简单的电路结构和高可靠性的液晶倾斜伺服装置。液晶驱动电路具有DC去除电路，用于去除基于来自控制单元的倾斜误差校正控制信号产生的驱动信号的DC分量，并将得到的信号提供给液晶装置。

3. 发明授权

US06777657B2 Focusing controller for focus jump control between recording layers of multilayer disk 失效
标题翻译：聚焦控制器用于多层盘记录层之间的焦点跳转控制
公开(公告)号：US06777657B2
公开(公告)日：2004-08-17
申请号：US10114027
申请日：2002-04-03
申请人： Yoshimichi Nishio , Yoshihiro Hashizuka , Kazunori Matsuo , Takeshi Sato , Morio Nozaki , Hitoshi Yamazaki , Kazuhiko Oogami , Yoshitaka Makino , Hideaki Yoshimura
发明人： Yoshimichi Nishio , Yoshihiro Hashizuka , Kazunori Matsuo , Takeshi Sato , Morio Nozaki , Hitoshi Yamazaki , Kazuhiko Oogami , Yoshitaka Makino , Hideaki Yoshimura
IPC分类号： G11B709
CPC分类号： G11B7/08511 , G11B7/08529 , G11B2007/0013
摘要： A focusing controller executes an appropriate focus jump even in a multilayer disk having layers of characteristics greatly different from each other. The focusing controller has an optical pickup including an objective lens for converging the light beam and a detector for receiving reflected light from the multilayer recording medium; an error signal generator for generating a focus error signal of the irradiated light beam from a detecting signal of the detector; an actuator for operating the objective lens; and a controller for controlling a focusing position of the light beam by operating the actuator based on the focus error signal. The controller calculates intensities of the reflected lights of two layers based on the detecting signal of the detector, and thus controls the timings of acceleration and deceleration signals of a focus jump between these two layers.
摘要翻译：即使在具有彼此极大不同的特征层的多层盘中，聚焦控制器执行适当的聚焦跳跃。聚焦控制器具有包括用于会聚光束的物镜的光学拾取器和用于接收来自多层记录介质的反射光的检测器; 误差信号发生器，用于根据检测器的检测信号产生照射光束的聚焦误差信号; 用于操作物镜的致动器; 以及控制器，用于通过基于聚焦误差信号操作致动器来控制光束的聚焦位置。控制器基于检测器的检测信号计算两层反射光的强度，从而控制这两层之间的聚焦跳跃的加速和减速信号的定时。

4. 发明授权

US06680886B1 Liquid crystal tilt servo apparatus 失效
标题翻译：液晶倾斜伺服装置
公开(公告)号：US06680886B1
公开(公告)日：2004-01-20
申请号：US09548264
申请日：2000-04-12
申请人： Shinichi Naohara , Takeshi Sato , Hitoshi Yamazaki , Norio Matsuda , Morio Nozaki
发明人： Shinichi Naohara , Takeshi Sato , Hitoshi Yamazaki , Norio Matsuda , Morio Nozaki
IPC分类号： G11B700
CPC分类号： G11B7/13927 , G11B7/0956
摘要： A tilt servo apparatus of an optical disc recording/reproducing apparatus, which includes sampling portion for sampling an RF envelope signal at every predetermined rotational angle on the basis of a rotation signal being synchronous with a rotation of the optical recording medium, calculating portion for calculating an average value of the sampled envelope intensities, and control portion for controlling a tilt error correction. The control portion determines the amount of the tilt error correction on the basis of the average value.
摘要翻译：一种光盘记录/再现装置的倾斜伺服装置，包括：采样部分，用于根据与光学记录介质的旋转同步的旋转信号以每个预定的旋转角度对RF包络信号进行采样;计算部分，用于计算采样包络强度的平均值，以及用于控制倾斜误差校正的控制部分。控制部根据平均值来决定倾斜误差校正量。

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