公开(公告)号：US08650926B2

公开(公告)日：2014-02-18

申请号：US12523072

申请日：2008-01-07

申请人： Takeharu Yamamoto ,  Atsushi Yakushigawa

发明人： Takeharu Yamamoto ,  Atsushi Yakushigawa

IPC分类号： B21C31/00 ,  B21C27/00

CPC分类号： B21C23/211 ,  B21C23/08 ,  B21C31/00

摘要： An extrusion press and an extrusion control method obtains a uniformly-shaped extruded product by constantly applying a constant container sealing force between a container and a die even when an extrusion force varies during an extrusion process, improving product yield, and keeping a small energy consumption at the time of extrusion.

摘要翻译： 挤出机和挤出控制方法通过在挤出过程中当挤出力变化时不断施加容器和模具之间的恒定的容器密封力来获得均匀的挤出产品，从而提高产品的产量，并保持较小的能量消耗 在挤出时。

公开(公告)号：US20130121122A1

公开(公告)日：2013-05-16

申请号：US13813278

申请日：2012-05-29

申请人： Kenji Kondo ,  Takeharu Yamamoto ,  Kenji Fujiune

发明人： Kenji Kondo ,  Takeharu Yamamoto ,  Kenji Fujiune

IPC分类号： G11B7/1392

CPC分类号： G11B7/13927 ,  G11B7/0946 ,  G11B7/0948 ,  G11B7/1387 ,  G11B7/24038 ,  G11B7/2405

摘要： Provided is an optical disc device including a focus control unit for performing control so that a convergent point of a main beam converges on a predetermined information layer, a tracking control unit for performing control so that the convergent point of the main beam scans a predetermined track or a predetermined mark sequence on an information layer, a sub beam receiving unit for receiving a sub beam reflected off the information layer and outputting a signal according to an amount of beam received, and a microcomputer for detecting, during a recording operation of recording the information, a focus loss-of-control state where the convergent point of the main beam deviates from the predetermined information layer or a tracking loss-of-control state where the convergent point of the main beam deviates from the predetermined track or the predetermined mark sequence on the information layer.

摘要翻译： 提供了一种光盘装置，包括：聚焦控制单元，用于执行控制，使得主光束的会聚点会聚在预定信息层上;跟踪控制单元，用于执行控制，使得主光束的会聚点扫描预定轨迹 或信息层上的预定标记序列，子波束接收单元，用于接收从信息层反射的子波束并根据所接收的波束的量输出信号;以及微计算机，用于在记录操作期间检测记录 信息，主波束的收敛点偏离预定信息层的焦点失控状态或主波束的收敛点偏离预定轨迹或预定标记的跟踪失控状态 序列在信息层上。

公开(公告)号：US08438892B2

公开(公告)日：2013-05-14

申请号：US12443188

申请日：2007-08-08

申请人： Takeharu Yamamoto ,  Yasuo Katoh

发明人： Takeharu Yamamoto ,  Yasuo Katoh

IPC分类号： B21C26/00

CPC分类号： B21C26/00 ,  B21C23/211 ,  B21C33/00

摘要： A stem slide apparatus comprises a stem slide base (73) with a stem (6) horizontally mounted thereon to press a billet (B) mounted on a container (5), a slide guide member (72, 72a, 72b) mounted on a vertical stem move support member (71) and formed with guide grooves in which the side end portions of the stem slide base are fitted and vertically slid, and a lock means (77a, 77b) arranged on the slide guide member to press the side end portions of the stem slide base. The stem slide apparatus further comprises a drive mechanism (10) having an electric motor (11) to move the slide base in the sliding direction. Therefore the indirect cause of a fire is removed and the maintenance work simplified.

摘要翻译： 杆滑动装置包括杆滑动基座（73），其具有水平地安装在其上的杆（6），以按压安装在容器（5）上的坯料（B），安装在容器（5）上的滑动引导构件（72,72a，72b） 垂直杆移动支撑构件（71）并且形成有引导槽，其中杆滑动基座的侧端部被装配并竖直滑动;以及锁定装置（77a，77b），其布置在滑动引导构件上以将侧端 杆滑动基座的部分。 杆滑动装置还包括具有电动机（11）的驱动机构（10），以沿滑动方向移动滑动基座。 因此，间接造成火灾的原因被消除，维护工作简化。

公开(公告)号：US20120244239A1

公开(公告)日：2012-09-27

申请号：US13514348

申请日：2009-12-14

申请人： Takeharu Yamamoto

发明人： Takeharu Yamamoto

IPC分类号： B29C47/10

CPC分类号： B21C23/211

摘要： To provide a fully electric extrusion press to reduce power consumption, improve maintenability and operability, and eliminate an adverse effect on the environment.An extrusion press (10) comprises an end platen (1), a fixed platen (2) arranged at the rear thereof, a tie rod (4) configured to link the end platen and the fixed platen, a die (20), a container (3) loaded with a billet (8), an extrusion stem (13) configured to press the billet, a crosshead (7) attached with the extrusion stem, and an extrusion drive configured to reciprocate the extrusion stem. The extrusion drive comprises a rotatable wire drum (31) driven by an electric extrusion main motor (39) and drives the extrusion stem to perform extrusion molding by winding the wire (30) by rotating the wire drum.

摘要翻译： 提供全电动挤压机以降低功耗，提高可维护性和可操作性，并消除对环境的不利影响。 挤压机（10）包括端板（1），在其后部设置的固定压板（2），构造成连接端压板和固定压板的拉杆（4），模具（20）， 装载有坯料（8）的容器（3），构造成挤压坯料的挤出杆（13），附接有挤出杆的十字头（7）和被配置为使挤出杆往复运动的挤出驱动装置。 挤出驱动器包括由电动挤压主电动机（39）驱动的可旋转钢丝卷筒（31），并且通过旋转钢丝卷筒来驱动挤压轴以进行挤出成型。

公开(公告)号：US20120170436A1

公开(公告)日：2012-07-05

申请号：US13322923

申请日：2011-05-31

申请人： Kenji Fujiune ,  Takeharu Yamamoto

发明人： Kenji Fujiune ,  Takeharu Yamamoto

IPC分类号： G11B7/1263

CPC分类号： G11B7/1267 ,  G11B7/0062

摘要： With a large capacity of an optical disk and high-speed recording, a frequency of a recording signal is increased and a pulse width is narrowed. In the case that a laser is driven by a signal having the short pulse width, unfortunately the high-speed recording is hardly performed to an optical disk when a rise time and a fall time of the optical pulse are lengthened.During user data recording, a bottom driving current is set to a second bottom driving current value that is a current value of a threshold or less, so that the rise time and the fall time of the optical pulse can be shortened to perform the high-speed recording of the optical disk.

摘要翻译： 利用大容量的光盘和高速记录，记录信号的频率增加并且脉冲宽度变窄。 在激光器由具有短脉冲宽度的信号驱动的情况下，不幸的是，当光脉冲的上升时间和下降时间延长时，几乎不对光盘执行高速记录。 在用户数据记录期间，将底部驱动电流设定为阈值以下的当前值的第二底部驱动电流值，从而能够缩短光脉冲的上升时间和下降时间， 速度记录光盘。

公开(公告)号：US08085631B2

公开(公告)日：2011-12-27

申请号：US12793038

申请日：2010-06-03

申请人： Takashi Kishimoto ,  Takeharu Yamamoto ,  Yoshirou Kashiwabara ,  Akihiro Arai

发明人： Takashi Kishimoto ,  Takeharu Yamamoto ,  Yoshirou Kashiwabara ,  Akihiro Arai

IPC分类号： G11B7/00

CPC分类号： G11B7/0903 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B2007/0013

摘要： The invention provides a tracking control device, a tracking control method, and an optical disc apparatus that enable to stably perform the tracking control, and reduce an influence of stray light from the other layer on the tracking control. A sub push-pull signal correcting section corrects a sub push-pull signal to be generated from returning light of a sub beam in such a manner that a track crossing component of a main push-pull signal to be generated from returning light of a main beam, and a track crossing component of the sub push-pull signal to be generated from the returning light of the sub beam are canceled. A low pass filter reduces a high frequency component of the sub push-pull signal corrected by the sub push-pull signal correcting section. A subtractor subtracts a sub push-pull signal passing the low pass filter from the main push-pull signal to thereby generate a tracking error signal.

摘要翻译： 本发明提供一种跟踪控制装置，跟踪控制方法和光盘装置，其能够稳定地执行跟踪控制，并且减少来自另一层的杂散光对跟踪控制的影响。 子推挽信号校正部分校正从子光束的返回光产生的副推挽信号，使得从主信号的返回光产生的主推挽信号的轨道交叉分量 并且从副光束的返回光产生的副推挽信号的轨迹交叉分量被消除。 低通滤波器降低由副推挽信号校正部校正的副推挽信号的高频分量。 减法器从主推挽信号中减去通过低通滤波器的副推挽信号，从而产生跟踪误差信号。

公开(公告)号：US20100195464A1

公开(公告)日：2010-08-05

申请号：US12666998

申请日：2008-07-02

申请人： Tsuyoshi Katayama ,  Takeharu Yamamoto ,  Mitsuru Sakai

发明人： Tsuyoshi Katayama ,  Takeharu Yamamoto ,  Mitsuru Sakai

IPC分类号： G11B20/10

CPC分类号： G11B7/0906

摘要： A first comparator (112a) compares a first voltage signal to a predetermined threshold to output a first binary signal corresponding to a comparison result. A second comparator (112b) compares a second voltage signal to a predetermined threshold to output a second binary signal corresponding to a comparison result. A first digital sampling section (113a) samples the first binary signal output by the first comparator 112a to generate a first sampling signal. A second digital sampling section (113b) samples the second binary signal output by the second comparator (112b) to generate a second sampling signal. A phase difference detector circuit (114) detects a phase difference between the first sampling signal generated by the first digital sampling section (113a) and the second sampling signal generated by the second digital sampling section (113b).

摘要翻译： 第一比较器（112a）将第一电压信号与预定阈值进行比较，以输出与比较结果相对应的第一二进制信号。 第二比较器（112b）将第二电压信号与预定阈值进行比较，以输出对应于比较结果的第二二进制信号。 第一数字采样部分（113a）对由第一比较器112a输出的第一二进制信号进行采样以产生第一采样信号。 第二数字采样部分（113b）对由第二比较器（112b）输出的第二二进制信号采样以产生第二采样信号。 相位差检测器电路（114）检测由第一数字采样部分（113a）产生的第一采样信号和由第二数字采样部分（113b）产生的第二采样信号之间的相位差。

公开(公告)号：USRE40946E1

公开(公告)日：2009-10-27

申请号：US10677169

申请日：2003-10-02

申请人： Katsuya Watanabe ,  Mitsurou Moriya ,  Shin-ichi Yamada ,  Yasuaki Edahiro ,  Takeharu Yamamoto

发明人： Katsuya Watanabe ,  Mitsurou Moriya ,  Shin-ichi Yamada ,  Yasuaki Edahiro ,  Takeharu Yamamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/08511 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An optical disk apparatus comprises a focusing means for focusing a light beam on a recording medium having first and second information faces; means for moving a focal point of the light beam in a direction substantially perpendicular to the information faces of the recording medium; means for detecting a reflected light from the recording medium; means for detecting a focus condition of the light beam on the basis on an output signal from the reflected light detecting means; a focus control means for driving the focal point moving means on the basis of an output signal from the focus condition detecting means, and controlling the light beam so that the focus condition of the light beam becomes a prescribed focus condition; and a focus jumping means for moving the focal point of the light beam from the first information face to the second information face by driving the focal point moving means.

摘要翻译： 光盘装置包括用于将光束聚焦在具有第一和第二信息面的记录介质上的聚焦装置; 用于沿着与记录介质的信息面大致垂直的方向移动光束的焦点的装置; 用于检测来自记录介质的反射光的装置; 用于基于来自反射光检测装置的输出信号检测光束的聚焦条件的装置; 焦点控制装置，用于根据来自聚焦条件检测装置的输出信号驱动焦点移动装置，并控制光束使得光束的聚焦条件成为规定的聚焦条件; 以及聚焦跳跃装置，用于通过驱动焦点移动装置将光束的焦点从第一信息面移动到第二信息面。

公开(公告)号：US07193941B2

公开(公告)日：2007-03-20

申请号：US10401449

申请日：2003-03-28

申请人： Takeharu Yamamoto ,  Yoshihiro Kanda ,  Takashi Kishimoto ,  Rie Takahashi ,  Tetsuya Shihara

发明人： Takeharu Yamamoto ,  Yoshihiro Kanda ,  Takashi Kishimoto ,  Rie Takahashi ,  Tetsuya Shihara

IPC分类号： G11B27/10

CPC分类号： G11B7/0053 ,  G11B7/08517 ,  G11B19/28 ,  G11B20/10 ,  G11B20/1258 ,  G11B27/24 ,  G11B2020/10916 ,  G11B2020/1239 ,  G11B2020/1267 ,  G11B2020/1287 ,  G11B2020/1288 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2541 ,  G11B2220/2562 ,  G11B2220/2575

摘要： An optical disc drive includes: a motor for rotating an optical disc thereon; a photoelectric transducer for converting a light beam, reflected from or transmitted through the disc, into an electric signal; a clock sync signal reader for extracting and outputting a read signal, representing a clock synchronization mark, from the electric signal; a clock generator for generating a clock signal having a variable frequency; a phase locking controller for controlling the clock generator to synchronize the clock signal in phase with the output signal of the clock sync signal reader; and a mechanism for displacing a light beam spot toward a target track on the disc. During a seek operation of displacing the light beam spot toward the target track, the clock generator is controlled to obtain a frequency to be expected on the target track and output a clock signal having the expected frequency.

摘要翻译： 光盘驱动器包括：用于在其上旋转光盘的马达; 用于将从光盘反射或透过光盘的光束转换为电信号的光电传感器; 时钟同步信号读取器，用于从电信号中提取并输出表示时钟同步标记的读取信号; 时钟发生器，用于产生具有可变频率的时钟信号; 相位锁定控制器，用于控制时钟发生器，使时钟信号同步于时钟同步信号读取器的输出信号; 以及用于将光束点移向盘上的目标轨道的机构。 在将光束点移向目标轨道的寻道操作期间，控制时钟发生器以获得目标轨道上预期的频率并输出具有预期频率的时钟信号。

公开(公告)号：US07154832B2

公开(公告)日：2006-12-26

申请号：US10317042

申请日：2002-12-12

申请人： Yoshihiro Kanda ,  Takeharu Yamamoto

发明人： Yoshihiro Kanda ,  Takeharu Yamamoto

IPC分类号： G11B7/00

CPC分类号： G11B19/28 ,  G11B19/125

摘要： A type of disc is judged at high reliability irrespective of a presence of information record or magnitude of disc eccentricity. A reproduction apparatus judges the type of an optical disc to reproduce information recorded on tracks of the optical disc. The disc is classified as a type of read-only optical discs whose tracks are formed with pits and as a type of recordable optical discs whose tracks are formed with wobbling grooves. The apparatus includes a motor which rotates the optical disc, a head which irradiates the tracks of the optical disc rotated by the motor with an optical beam and outputs two detection signals corresponding to reflected light from the optical disc, and a controller which judges the type of the optical disc according to changes of a period of a specific signal contained in a push-pull signal generated from the two detection signals by varying a rotating speed of the motor.