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。

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。

公开(公告)号：US06147942A

公开(公告)日：2000-11-14

申请号：US112004

申请日：1998-07-08

申请人： Hiroyuki Abe ,  Takeshi Sato ,  Kazushige Kawana ,  Hideaki Watarihana ,  Shinichi Naohara ,  Motoi Kimura ,  Yuichi Kimikawa ,  Masakazu Takahashi

发明人： Hiroyuki Abe ,  Takeshi Sato ,  Kazushige Kawana ,  Hideaki Watarihana ,  Shinichi Naohara ,  Motoi Kimura ,  Yuichi Kimikawa ,  Masakazu Takahashi

IPC分类号： G11B7/00 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08511 ,  G11B2007/0013 ,  G11B7/08529 ,  G11B7/0945

摘要： A focus control apparatus for a multilayer optical recording medium which performs an appropriate focus jump on a multilayer optical recording medium. This focus control apparatus implements such focus jump control as to temporarily release a focus servo on one layer of a loaded multilayer optical recording medium, shift the focus position of read light on another target layer and then restart the focus servo on the another target layer, detects an ambient temperature, sets a drive signal condition according to the temperature detection output, and moves the focus position of the read light under the set drive signal condition. Specifically, this apparatus generates an acceleration signal to start moving the focus position of read light and a deceleration signal to decelerate movement of the focus position of the read light, as drive signals for a focus actuator in order to execute a focus jump operation, detects an ambient temperature of the focus actuator, and sets signal conditions for the acceleration signal and the deceleration signal according to the detected temperature.

摘要翻译： 一种用于在多层光学记录介质上执行适当的聚焦跳跃的多层光学记录介质的聚焦控制装置。 该聚焦控制装置实现这样的聚焦跳跃控制，以暂时释放加载的多层光记录介质的一层上的聚焦伺服，将读取光的聚焦位置移动到另一目标层上，然后在另一目标层上重新启动聚焦伺服， 检测环境温度，根据温度检测输出设定驱动信号状态，并在设定的驱动信号条件下移动读取光的聚焦位置。 具体地，该装置产生加速度信号，开始移动读取光的聚焦位置和减速信号，以减慢读取光的焦点位置的移动，作为聚焦致动器的驱动信号，以执行聚焦跳跃操作，检测 聚焦致动器的环境温度，并且根据检测到的温度设置用于加速度信号和减速信号的信号条件。

公开(公告)号：US06151280A

公开(公告)日：2000-11-21

申请号：US105269

申请日：1998-06-26

申请人： Shinichi Naohara ,  Takashi Suzuki ,  Alex Bradshaw ,  Motoi Kimura ,  Norio Matsuda ,  Kazushige Kawana ,  Kenichi Takahashi

发明人： Shinichi Naohara ,  Takashi Suzuki ,  Alex Bradshaw ,  Motoi Kimura ,  Norio Matsuda ,  Kazushige Kawana ,  Kenichi Takahashi

IPC分类号： G11B7/00 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08511 ,  G11B2007/0013 ,  G11B7/0945

摘要： A focus jump control apparatus of a player for playing a multilayer recording disc surely achieves a focus jump. This apparatus includes: a focusing servo loop for allowing a focal point to trace a recording surface in accordance with a focusing error signal by using a focusing actuator to displace the focal point of read light to a disc in the optical axial direction; and a tracking servo loop for allowing the focal point to trace disc tracks. A loop opening/closing control unit opens/closes focusing/tracking servo loops in response to an instruction and closes the focusing servo loop when the movement of the focal point from one of the recording surfaces to the other. During the movement of the read light focal point, the closing state of the tracking servo loop is maintained. Jump driving means generates a drive signal of the actuator to move the focal point from one of the recording surfaces to the other based on the error signal under the opening/closing control of the focusing/tracking servo loops.

摘要翻译： 用于播放多层记录盘的播放器的焦点跳跃控制装置确实实现了聚焦跳跃。 该装置包括：聚焦伺服环，用于通过使用聚焦致动器将读取光的焦点在光轴方向上移位到光盘，根据聚焦误差信号使焦点跟踪记录表面; 以及用于允许焦点跟踪盘轨迹的跟踪伺服环路。 环路打开/关闭控制单元响应于指令打开/关闭聚焦/跟踪伺服环路，并且当焦点从记录表面之一移动到另一个时闭合聚焦伺服环路。 在读取光焦点的运动期间，维持跟踪伺服环路的关闭状态。 跳转驱动装置根据在聚焦/跟踪伺服环路的打开/关闭控制下的误差信号产生致动器的驱动信号，以将焦点从记录表面之一移动到另一记录表面。

公开(公告)号：US06690632B1

公开(公告)日：2004-02-10

申请号：US09548263

申请日：2000-04-12

申请人： Takeshi Sato ,  Motoi Kimura ,  Alex Bradshaw ,  Norio Matsuda ,  Shinichi Naohara

发明人： Takeshi Sato ,  Motoi Kimura ,  Alex Bradshaw ,  Norio Matsuda ,  Shinichi Naohara

IPC分类号： G11B390

CPC分类号： G11B7/1369 ,  G11B7/0956 ,  G11B7/13927

摘要： A tilt servo apparatus which can correct a tilt error at a high speed and with high precision irrespective of a magnitude of the tilt error even if a response speed of a liquid crystal device decreases is provided. An amount of change and an increase/decrease of a signal intensity are detected by changing a correction value of a tilt error correcting arrangement by a first correction width, and a correction width of the correction value and a correcting direction are determined on the basis of the detection result. When the amount of change of the signal intensity is smaller than a predetermined amount of change, the correction width is changed to a second correction width which is smaller than a first correction width. When it is larger than the predetermined amount of change, the correction width is changed to a third correction width larger than the first correction width. The correction width is also determined in accordance with a change in environmental temperature.

摘要翻译： 提供了即使液晶装置的响应速度降低，也可以与倾斜误差的大小无关地以高精度校正倾斜误差的倾斜伺服装置。 通过将倾斜误差校正装置的校正值改变第一校正宽度来检测信号强度的变化量和增加/减小，并且基于校正值和校正方向确定校正值和校正方向的校正宽度 检测结果。 当信号强度的变化量小于预定量的变化量时，校正宽度变为小于第一校正宽度的第二校正宽度。 当其大于预定量的变化量时，校正宽度变为大于第一校正宽度的第三校正宽度。 校正宽度也根据环境温度的变化来确定。

公开(公告)号：US6134196A

公开(公告)日：2000-10-17

申请号：US113225

申请日：1998-07-10

申请人： Takeshi Sato ,  Takashi Suzuki ,  Hiroyuki Abe ,  Hideaki Watarihana ,  Alex Bradshaw ,  Motoi Kimura ,  Kenichi Takahashi

发明人： Takeshi Sato ,  Takashi Suzuki ,  Hiroyuki Abe ,  Hideaki Watarihana ,  Alex Bradshaw ,  Motoi Kimura ,  Kenichi Takahashi

IPC分类号： G11B7/00 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B19/12

CPC分类号： G11B7/08511 ,  G11B19/12 ,  G11B7/0901 ,  G11B7/0945 ,  G11B2007/0013 ,  G11B7/00745 ,  G11B7/0908

摘要： A carriage controller for a multi-layer disc which is capable of performing a stable carriage control during reproduction of a multi-layer disc of the opposite recording scheme. A tracking error signal is relayed by an equalizer, and a carriage motor is driven in accordance with an output signal of the equalizer. An information reading direction on a layer of a disc on which a pickup reads information is detected, and an equalizer characteristic is set in the equalizer in accordance with the detection result.

摘要翻译： 一种用于多层盘的托架控制器，其能够在再现相反记录方案的多层盘的过程中执行稳定的托架控制。 跟踪误差信号由均衡器中继，并且根据均衡器的输出信号来驱动滑架电动机。 检测拾取器读取信息的盘层上的信息读取方向，并根据检测结果在均衡器中设置均衡器特性。

公开(公告)号：US08107342B2

公开(公告)日：2012-01-31

申请号：US12699386

申请日：2010-02-03

申请人： Tsutomu Kurihara ,  Motoi Kimura ,  Koichi Yokoyama

发明人： Tsutomu Kurihara ,  Motoi Kimura ,  Koichi Yokoyama

IPC分类号： G11B7/00 ,  G11B7/0045

CPC分类号： G11B7/126 ,  G11B7/00456 ,  G11B7/0062

摘要： A laser driving device includes: a first pulse generating section; a second pulse generating section; a light emission waveform generating section; a light emission level pattern storing section; and a second storing section. The second storing section stores sampling pulse patterns. Therefore setting information of the sampling pulse can be selected without a control line.

摘要翻译： 激光驱动装置包括：第一脉冲发生部; 第二脉冲发生部分; 发光波形发生部; 发光电平模式存储部; 和第二存储部。 第二存储部存储采样脉冲模式。 因此，可以在没有控制线的情况下选择采样脉冲的设定信息。

公开(公告)号：US07852734B2

公开(公告)日：2010-12-14

申请号：US11751062

申请日：2007-05-21

申请人： Noriaki Nishi ,  Hiroaki Mizuma ,  Motoi Kimura ,  Kenji Yamamoto ,  Masatoshi Nishino

发明人： Noriaki Nishi ,  Hiroaki Mizuma ,  Motoi Kimura ,  Kenji Yamamoto ,  Masatoshi Nishino

IPC分类号： G11B7/135

CPC分类号： G11B7/1263 ,  G11B7/128 ,  G11B7/1356 ,  G11B7/1369 ,  G11B7/1381

摘要： The light intensity of a light beam emitted from a light source is appropriately controlled when the light beam is transmitted through a variable optical coupling efficiency device in an optical head. During a read mode, the light beam from the light source is incident on an optical disk at an intensity relatively weaker than that of the light source. By switching the optical coupling efficiency of the variable optical coupling efficiency device between a write mode and a read mode, the light intensity directed to an optical recording medium is substantially varied from the write mode to the read mode. This arrangement eliminates the need for substantially increasing the optical output power ratio of the light source of write power to read power.

摘要翻译： 当光束通过光学头中的可变光耦合效率器件传输时，适当地控制从光源发射的光束的光强度。 在读取模式期间，来自光源的光束以比光源弱的强度入射到光盘上。 通过在写入模式和读取模式之间切换可变光耦合效率器件的光耦合效率，指向光学记录介质的光强度从写入模式到读取模式基本上是变化的。 这种布置消除了对读取功率的写入功率的光源的光输出功率比实质上增加的需要。

公开(公告)号：US20100272138A1

公开(公告)日：2010-10-28

申请号：US12662034

申请日：2010-03-29

申请人： Hiroyuki Chiba ,  Motoi Kimura

发明人： Hiroyuki Chiba ,  Motoi Kimura

IPC分类号： H01S3/13

CPC分类号： G11B7/1263 ,  G11B7/0062 ,  H01S5/0428

摘要： Disclosed herein is a laser driving apparatus, including: a driving unit adapted to current drive a laser device with a current value in accordance with a level of a signal supplied thereto; and an emission light waveform correction unit adapted to receive supply of a pulsed reference signal and generate, based on a correction timing pulse interlocked with a rising edge and/or a falling edge of a pulse, a correction signal having a level different from that of the reference signal and then supply the correction signal to the driving unit so that the shape of the emission light waveform of the laser device becomes close to that of a rectangular wave.

摘要翻译： 这里公开了一种激光驱动装置，包括：驱动单元，其适于根据提供给其的信号的电平来电流驱动具有电流值的激光装置; 以及发光光波形校正单元，其适于接收脉冲参考信号的供给，并且基于与脉冲的上升沿和/或下降沿互锁的校正定时脉冲产生具有与脉冲的上升沿和/ 参考信号，然后将校正信号提供给驱动单元，使得激光装置的发射光波形的形状变得接近矩形波的形状。

公开(公告)号：US20100260029A1

公开(公告)日：2010-10-14

申请号：US12659320

申请日：2010-03-04

申请人： Tsutomu Kurihara ,  Motoi Kimura ,  Koichi Yokoyama

发明人： Tsutomu Kurihara ,  Motoi Kimura ,  Koichi Yokoyama

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00456

摘要： Disclosed herein is a laser driving device including: a sample-hold section; a first pulse generating section; a second pulse generating section; a light emission waveform generating section; a storing section; and a sampling pulse generating section.

摘要翻译： 本文公开了一种激光驱动装置，包括：样品保持部; 第一脉冲发生部分; 第二脉冲发生部分; 发光波形发生部; 存储部分; 和采样脉冲发生部分。