公开(公告)号：US20060153259A1

公开(公告)日：2006-07-13

申请号：US11299788

申请日：2005-12-13

申请人： Motoi Kimura ,  Yasuyuki Takeshita ,  Hidetaka Kodama

发明人： Motoi Kimura ,  Yasuyuki Takeshita ,  Hidetaka Kodama

IPC分类号： H01S3/00

CPC分类号： H01S5/06808 ,  G11B7/1263 ,  H01S5/0683

摘要： A laser drive includes a variable output voltage source that can control an output voltage, a laser source connected to the variable output voltage source, a laser drive circuit that drives the laser source, and a monitoring controller that monitors an operating voltage of the laser drive circuit and controls the output of the variable output voltage source such that the monitored operating voltage becomes equal to a desired value.

摘要翻译： 激光驱动器包括可控制输出电压的可变输出电压源，连接到可变输出电压源的激光源，驱动激光源的激光驱动电路以及监视激光驱动器的工作电压的监视控制器 电路并控制可变输出电压源的输出，使得监测的工作电压变得等于期望值。

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：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：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：US08369368B2

公开(公告)日：2013-02-05

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： H01S3/00

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。

公开(公告)号：US08228773B2

公开(公告)日：2012-07-24

申请号：US12461408

申请日：2009-08-11

申请人： Tsutomu Kurihara ,  Motoi Kimura ,  Koichi Yokoyama ,  Toshiaki Yoshihara

发明人： Tsutomu Kurihara ,  Motoi Kimura ,  Koichi Yokoyama ,  Toshiaki Yoshihara

IPC分类号： G11B7/00

CPC分类号： G11B7/0062

摘要： A laser driving device includes a storage unit that stores signal patterns for recording-waveform control representing level information of each divided driving signal to drive a laser device on a space and a mark based on the divided driving signals. Also, it includes a pulse generator that generates the reference pulse and the switching pulse based on a first transmission signal and a second transmission signal. The first transmission signal contains timing information for acquiring a reference pulse that represents a timing of repetitively switching between the space and the mark. The second transmission signal contains timing information for acquiring a switch pulse that represents a timing of switching the signals. Among level information for each of the signals in the storage, reference level information is read together with the reference pulse. Other level information after the reference level information is sequentially read for each switching pulse.

摘要翻译： 激光驱动装置包括存储单元，其存储用于记录波形控制的信号图形，其表示基于划分的驱动信号的空间上的激光装置的驱动信号，并分别驱动激光装置。 此外，它包括脉冲发生器，其基于第一传输信号和第二传输信号产生参考脉冲和切换脉冲。 第一传输信号包含用于获取表示在空间和标记之间重复切换的定时的参考脉冲的定时信息。 第二发送信号包含用于获取表示切换信号的定时的开关脉冲的定时信息。 在存储器中的每个信号的电平信息中，参考电平信息与参考脉冲一起读取。 对于每个切换脉冲，依次读取参考电平信息之后的其他电平信息。

公开(公告)号：US20100260028A1

公开(公告)日：2010-10-14

申请号：US12659318

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： G11B7/0062 ,  G11B7/1263 ,  H01S5/0428 ,  H01S5/06835

摘要： A laser driving device includes: a first pulse generating section; a second pulse generating section; a light emission waveform generating section; and a light emission level pattern storing section.

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; 和发光级图形存储部。

公开(公告)号：US20060164955A1

公开(公告)日：2006-07-27

申请号：US11387832

申请日：2006-03-24

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： G11B7/00

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.

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：US6026071A

公开(公告)日：2000-02-15

申请号：US951849

申请日：1997-10-16

申请人： Motoi Kimura

发明人： Motoi Kimura

IPC分类号： G11B7/135 ,  G11B7/005 ,  G11B7/00 ,  G11B3/90

CPC分类号： G11B7/005

摘要： An optical disk player for obtaining a read data signal by the use of laser light beams incident on an optical disk, wherein any laser noise component included in the read data signal due to wavelength and power variation in the light beam incident on the optical disk can be suppressed efficiently and completely. The optical disk player comprises a first light receiver for producing a read output signal by detecting a light beam which is based on the laser light emitted from a semiconductor laser device to be incident on the optical disk and is reflected therefrom; a read signal processor for producing a read data signal on the basis of the read output signal; a second light receiver for partially detecting the light beam transmitted toward the optical disk to be incident thereon and producing a variation detection signal representative of any variation in the detected light beam; and a noise suppressor for reducing the laser noise component in the read data signal by first inverting the phase of the variation detection signal obtained from the second light receiver and then adding the phase-inverted signal to the read data signal outputted from the read signal processor.

摘要翻译： 一种用于通过使用入射在光盘上的激光束获得读取数据信号的光盘播放器，其中由于入射在光盘上的光束中的波长和功率变化引起的读取数据信号中包括的任何激光噪声分量可以 被有效地和完全地抑制。 光盘播放器包括：第一光接收器，用于通过检测基于从半导体激光器件发射的激光入射在光盘上并被反射的光束产生读取输出信号; 读取信号处理器，用于根据读取的输出信号产生读取数据信号; 第二光接收器，用于部分地检测朝向光盘传入的光束以入射到其上，并产生表示检测到的光束中的任何变化的变化检测信号; 以及噪声抑制器，用于通过首先反转从第二光接收器获得的变化检测信号的相位，然后将相位反转的信号加到读信号处理器输出的读数据信号上，从而降低读数据信号中的激光噪声分量 。