公开(公告)号：US08662489B2

公开(公告)日：2014-03-04

申请号：US13553584

申请日：2012-07-19

申请人： Akihiro Arai ,  Mitsuhiko Sato ,  Shunsuke Nishimura ,  Toshiyuki Miyake ,  Takashi Yokoya ,  Hiromasa Maenishi ,  Yutaka Ando ,  Nozomi Kumakura

发明人： Akihiro Arai ,  Mitsuhiko Sato ,  Shunsuke Nishimura ,  Toshiyuki Miyake ,  Takashi Yokoya ,  Hiromasa Maenishi ,  Yutaka Ando ,  Nozomi Kumakura

IPC分类号： B65H31/34 ,  B65H39/00

CPC分类号： B65H31/38 ,  B65H31/10 ,  B65H33/08 ,  B65H2301/42192 ,  B65H2801/27 ,  G03G15/6552

摘要： A sheet stacking apparatus includes a discharge unit, a stacking tray, an acquisition unit, a shift control unit, and an alignment unit. The shift control unit controls a stacking position of a sheet in a sheet width direction in response to shift information acquired by the acquisition unit. The alignment unit aligns a sheet staked on the stacking tray and moves to a position that abuts on a side edge of the sheet in the sheet width direction to align the sheet. The shift control unit controls a stacking position of a second sheet to stack the second sheet on a second position or on a first position depending on where a first sheet is stacked and on shift information of the second sheet.

摘要翻译： 片材堆垛装置包括排出单元，堆垛盘，采集单元，变速控制单元和对准单元。 换档控制单元响应于由获取单元获取的换档信息来控制纸张在纸张宽度方向上的堆叠位置。 对准单元使堆叠托盘上的片材对齐并移动到在片材宽度方向上与片材的侧边缘抵接的位置，以对准片材。 换档控制单元控制第二纸张的堆叠位置，以根据第一纸张堆叠的位置和第二纸张的移动信息将第二纸张堆叠在第二位置或第一位置。

公开(公告)号：US08493824B2

公开(公告)日：2013-07-23

申请号：US12089984

申请日：2006-10-10

申请人： Fumitomo Yamasaki ,  Akihiro Arai ,  Hideki Aikoh

发明人： Fumitomo Yamasaki ,  Akihiro Arai ,  Hideki Aikoh

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0943

摘要： A tilt can be detected highly accurately by minimizing the tilt detection error. An optical head includes: an objective lens for converging a light beam from a light source onto an optical disc; a photodetector section receiving the beam, reflected from the disc, at divided areas on its photodetection plane and outputting light detection signals from those areas; and a tilt detecting section for detecting a relative tilt between the lens and disc based on the detection signals. The tilt detecting section generates a first push-pull signal PP1 based on the detection signals supplied from a first group of areas, which are arranged symmetrically to a virtual reference line drawn parallel to a disc radial direction and crossing an optical axis, also generates a second push-pull signal PP2 based on the detection signals supplied from a second group of areas, different from the first group and also arranged symmetrically to the reference line, changes coefficients k according to the location of the lens in a disc radial direction, and generates a tilt detection signal TLT by TLT=PP1−k×PP2.

摘要翻译： 通过最小化倾斜检测误差可以高精度地检测倾斜。 光头包括：用于将来自光源的光束会聚到光盘上的物镜; 光接收器部分，在光检测平面上的分割区域处接收从光盘反射的光束，并从这些区域输出光检测信号; 以及倾斜检测部分，用于基于检测信号检测透镜和光盘之间的相对倾斜度。 倾斜检测部基于从与盘径向平行且与光轴交叉的虚拟参考线对称地配置的第一组区域提供的检测信号，生成第一推挽信号PP1，也产生 基于从与第一组不同的第二组区域提供的并且对称地布置到参考线的检测信号的第二推挽信号PP2根据透镜在盘径向的位置改变系数k，以及 通过TLT = PP1-k×PP2生成倾斜检测信号TLT。

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：US07773468B2

公开(公告)日：2010-08-10

申请号：US11570821

申请日：2006-04-11

申请人： Fumitomo Yamasaki ,  Eishin Mori ,  Hideki Aikoh ,  Akihiro Arai ,  Joji Anzai

发明人： Fumitomo Yamasaki ,  Eishin Mori ,  Hideki Aikoh ,  Akihiro Arai ,  Joji Anzai

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1369 ,  G11B7/1376 ,  G11B2007/0013

摘要： Fifth order spherical aberration in addition to third order spherical aberration for an optical information recording medium of which thickness of a light transmission layer changes greatly is corrected. An objective lens collects a laser beam emitted from a semiconductor laser on an optical information recording medium. A spherical aberration correcting portion corrects spherical aberration generated according to a thickness of the light transmission layer of the optical information recording medium, in which the spherical aberration correcting portion includes a collimator lens, a lens holder and a stepping motor for correcting the third order spherical aberration and a liquid crystal element and an applied voltage control portion for correcting the fifth order spherical aberration.

摘要翻译： 校正光传输层的厚度变化较大的光信息记录介质的三阶球面像差的第五级球面像差。 物镜将从半导体激光器发射的激光束收集在光学信息记录介质上。 球面像差校正部分校正根据光学信息记录介质的光透射层的厚度产生的球面像差，其中球面像差校正部分包括准直透镜，透镜保持器和用于校正三阶球面的步进电机 像差和用于校正五阶球面像差的液晶元件和施加电压控制部分。

公开(公告)号：US20090046564A1

公开(公告)日：2009-02-19

申请号：US12293291

申请日：2007-03-19

申请人： Fumitomo Yamasaki ,  Hideki Aikoh ,  Akihiro Arai

发明人： Fumitomo Yamasaki ,  Hideki Aikoh ,  Akihiro Arai

IPC分类号： G11B7/135

CPC分类号： G11B7/0956 ,  G11B7/1378 ,  G11B7/13927 ,  G11B2007/0006

摘要： In an optical head (10) used for an optical disc (30) in which light-transmitting layers largely change in thickness, a degree-of-diversion/convergence enlarging member (20) fixed between a collimating lens (4) and an objective lens (6) is arranged. With this configuration, a moving range of the collimating lens can be reduced, and the optical head can be miniaturized.

摘要翻译： 在用于其中透光层厚度变化很大的光盘（30）的光学头（10）中，固定在准直透镜（4）和物镜（4）之间的分度/会聚放大部件（20） 配置透镜（6）。 利用这种配置，可以减小准直透镜的移动范围，并且可以使光学头小型化。

公开(公告)号：US07460448B2

公开(公告)日：2008-12-02

申请号：US11789106

申请日：2007-04-23

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

摘要翻译： 本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。 光记录介质具有基本上以恒定间距布置的轨道。 平均音高是tp。 当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。 跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算 接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号， 当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。

公开(公告)号：US07450308B2

公开(公告)日：2008-11-11

申请号：US11114775

申请日：2005-04-26

申请人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Akihiro Arai

发明人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Akihiro Arai

IPC分类号： G02B27/10 ,  G02B7/02

CPC分类号： G11B7/1398 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/22 ,  G11B2007/13727

摘要： A beam shaping lens for shaping an incident beam having an elliptic cross section into an outgoing beam having a substantially circular cross section includes a first plane which is a cylindrical surface having a generating line curving to form a non-circular cylindrical surface as an incidence side of the incident beam and a second plane which is a circular cylindrical surface as an outgoing side of the outgoing beam. The distance between both ends of the generating line of the circular cylindrical surface is larger than the distance between both ends of the generating line of the non-circular cylindrical surface.

摘要翻译： 用于将具有椭圆形截面的入射光束成形为具有基本圆形横截面的输出光束的光束整形透镜包括：第一平面，其是具有弯曲形成非圆形圆柱形表面的发生线弯曲的圆柱形表面，作为入射侧 的入射光束和作为出射光束的出射侧的圆柱形表面的第二平面。 圆筒形表面的生成线的两端之间的距离大于非圆柱形表面的生成线的两端之间的距离。

公开(公告)号：US07420897B2

公开(公告)日：2008-09-02

申请号：US11176207

申请日：2005-07-08

申请人： Fumitomo Yamasaki ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai

发明人： Fumitomo Yamasaki ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/131 ,  G11B7/133

摘要： A light sensing area of a light sensing element is comprised of A1 region, A2 region, B1 region, B2 region and N region. A tilt detector carries out a tilt detection in accordance with a first difference signal, which is a difference signal between a signal obtained from the A1 region and a signal obtained from the B1 region, and a second difference signal, which is difference signal between a signal obtained from the A2 region and a signal obtained from the B2 region.Accordingly, an optical-disk tilt detecting signal having a little influence of defocusing can be obtained even at boundaries between recorded information tracks and non-recorded information tracks.

摘要翻译： 感光元件的感光区域由A 1区域，A 2区域，B 1区域，B 2区域和N区域构成。 倾斜检测器根据作为从A 1区域获得的信号与从B 1区域获得的信号之间的差分信号的第一差分信号和作为差分信号的第二差分信号执行倾斜检测 在从A 2区域获得的信号和从B 2区域获得的信号之间。 因此，即使在记录的信息轨道和未记录的信息轨迹之间的边界，也可以获得具有散焦影响很小的光盘倾斜检测信号。

公开(公告)号：US20080159091A1

公开(公告)日：2008-07-03

申请号：US11980434

申请日：2007-10-31

申请人： Hideki Nakata ,  Akihiro Arai ,  Hiroshi Shibata ,  Yoichi Yamamoto

发明人： Hideki Nakata ,  Akihiro Arai ,  Hiroshi Shibata ,  Yoichi Yamamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1365 ,  G11B7/1263 ,  G11B7/1362 ,  G11B7/1374 ,  G11B7/1395 ,  G11B2007/0006

摘要： An optical pickup device has a first light source and a second light source each adapted for outputting a laser beam of a predetermined wavelength, a photodetector for detecting an intensity of the laser beam outputted from the first light source or the second light source to control the power of the laser beam to be outputted from the first light source or the second light source, a wideband quarter wavelength plate for converting the laser beam outputted from the first light source or the second light source into a circularly polarized laser beam, and a first rise-up mirror and a second rise-up mirror for guiding a P-polarized component in the laser beam converted by the wideband quarter wavelength plate to the photodetector, and guiding an S-polarized component in the laser beam different from the P-polarized component to an optical recording medium. With this arrangement, provided are an optical pickup device and an optical recording medium driving device capable of accurately controlling the power of the light source.

摘要翻译： 光拾取装置具有第一光源和第二光源，每个第一光源和第二光源适于输出预定波长的激光束;光检测器，用于检测从第一光源或第二光源输出的激光束的强度， 从第一光源或第二光源输出的激光束的功率;宽带四分之一波长板，用于将从第一光源或第二光源输出的激光束转换为圆偏振激光束;以及第一 上升反射镜和用于将由宽带四分之一波长板转换的激光束中的P偏振分量引导到光电检测器的第二上升反射镜，并且引导与P偏振光不同的激光束中的S偏振分量 分量到光记录介质。 利用这种布置，提供了能够精确地控制光源的功率的光学拾取装置和光学记录介质驱动装置。

公开(公告)号：US20070268806A1

公开(公告)日：2007-11-22

申请号：US11570821

申请日：2006-04-11

申请人： Fumitomo Yamasaki ,  Eishin Mori ,  Hideki Aikoh ,  Akihiro Arai ,  Joji Anzai

发明人： Fumitomo Yamasaki ,  Eishin Mori ,  Hideki Aikoh ,  Akihiro Arai ,  Joji Anzai

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1369 ,  G11B7/1376 ,  G11B2007/0013

摘要： Fifth order spherical aberration in addition to third order spherical aberration for an optical information recording medium of which thickness of a light transmission layer changes greatly is corrected. An objective lens collects a laser beam emitted from a semiconductor laser on an optical information recording medium. A spherical aberration correcting portion corrects spherical aberration generated according to a thickness of the light transmission layer of the optical information recording medium, in which the spherical aberration correcting portion includes a collimator lens, a lens holder and a stepping motor for correcting the third order spherical aberration and a liquid crystal element and an applied voltage control portion for correcting the fifth order spherical aberration.

摘要翻译： 校正光传输层的厚度变化较大的光信息记录介质的三阶球面像差的第五级球面像差。 物镜将从半导体激光器发射的激光束收集在光学信息记录介质上。 球面像差校正部分校正根据光学信息记录介质的光透射层的厚度产生的球面像差，其中球面像差校正部分包括准直透镜，透镜保持器和用于校正三阶球面的步进电机 像差和用于校正五阶球面像差的液晶元件和施加电压控制部分。