公开(公告)号：US07990834B2

公开(公告)日：2011-08-02

申请号：US11495907

申请日：2006-07-28

申请人： Tetsuo Ueyama ,  Osamu Miyazaki ,  Yukio Watanabe ,  Yasuo Nakata ,  Tomio Mashiyama

发明人： Tetsuo Ueyama ,  Osamu Miyazaki ,  Yukio Watanabe ,  Yasuo Nakata ,  Tomio Mashiyama

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/0903

摘要： An optical pickup device has a semiconductor laser emitting light which is in turn branched via a diffraction grating into at least three beams of light including a main beam and two sub beams which are in turn condensed via an objective lens on an optical disk at a guide groove and reflected by the optical disk to provide three reflections of light which are in turn received by detectors, each divided into two regions, respectively, to generate a tracking error signal. The diffraction grating is divided into three regions including a first region, a second region and a third region located intermediate therebetween, each having a periodical structure out of phase, the periodical structure having grating grooves in a direction determined depending on the phase of the second region to incline relative to a direction perpendicular to the guide groove of the optical disk.

摘要翻译： 光学拾取装置具有发射光的半导体激光器，该半导体激光器又通过衍射光栅分支成至少三束光束，所述至少三束光包括主光束和两个子光束，所述至少三个光束又通过物镜在光盘上以引导 凹槽并由光盘反射以提供三次反射的光，这些反射又被检测器接收，每个被分成两个区域以产生跟踪误差信号。 衍射光栅分为三个区域，包括第一区域，第二区域和位于其间的第三区域，每个区域具有异相的周期性结构，该周期结构具有根据第二区域的相位确定的方向的光栅槽 区域相对于垂直于光盘的引导槽的方向倾斜。

公开(公告)号：US07952966B2

公开(公告)日：2011-05-31

申请号：US12515179

申请日：2007-11-16

申请人： Masayoshi Nakamura ,  Akihiko Nishioka ,  Yasuo Nakata

发明人： Masayoshi Nakamura ,  Akihiko Nishioka ,  Yasuo Nakata

IPC分类号： G11B7/00

CPC分类号： G11B7/0906 ,  G11B7/0956

摘要： A tracking apparatus for an optical information reproduction apparatus includes the following: a photoelectric detector (1) in which a far-field pattern of a light spot converged on a recording medium is formed across a divided light-receiving cell; an arithmetic unit (2) for outputting at least a pair of arithmetic signals from the output of the photoelectric detector (1); a phase comparator (4) for detecting a phase difference between the output signals of the arithmetic unit (2); an absolute value detector (8) for detecting an absolute value of the output signal of the phase comparator (4); a level detector (9) for generating a signal that indicates whether or not a convergence position of the light spot is located off an information track by detecting a predetermined number of times or more the output signal of the absolute value detector (8) has become larger than a predetermined value; a sensitivity detector (10) for detecting and outputting the sensitivity of the level detector (9) by observing the output signal of the level detector (9); and a controller (11) for adjusting the detection conditions of the level detector (9) so that the output of the sensitivity detector (10) is a predetermined value.

摘要翻译： 光信息再现装置的跟踪装置包括：光束检测器（1），其中在分割的光接收单元上形成会聚在记录介质上的光点的远场图案; 用于从光电检测器（1）的输出端输出至少一对算术信号的算术单元（2）; 相位比较器（4），用于检测运算单元（2）的输出信号之间的相位差; 绝对值检测器（8），用于检测相位比较器（4）的输出信号的绝对值; 电平检测器（9），用于通过检测绝对值检测器（8）的输出信号的预定次数或更多次来产生指示光点的会聚位置是否位于信息轨道之外的信号 大于预定值; 灵敏度检测器（10），用于通过观察电平检测器（9）的输出信号来检测和输出电平检测器（9）的灵敏度; 以及用于调整电平检测器（9）的检测条件使得灵敏度检测器（10）的输出为预定值的控制器（11）。

公开(公告)号：US20100143087A1

公开(公告)日：2010-06-10

申请号：US12529970

申请日：2009-03-23

申请人： Toyoaki Yasuda ,  Masanori Fujino ,  Toshihiko Takemura ,  Yasuo Nakata ,  Yoshitaka Matsubara ,  Yoshihiro Ueda ,  Yuuki Takano ,  Yusuke Kawai ,  Ryohei Sumiyoshi ,  Hiroyuki Anami ,  Naoya Muramoto ,  Kenji Mitsui ,  Youhei Kawano ,  Takeshi Ikumura

发明人： Toyoaki Yasuda ,  Masanori Fujino ,  Toshihiko Takemura ,  Yasuo Nakata ,  Yoshitaka Matsubara ,  Yoshihiro Ueda ,  Yuuki Takano ,  Yusuke Kawai ,  Ryohei Sumiyoshi ,  Hiroyuki Anami ,  Naoya Muramoto ,  Kenji Mitsui ,  Youhei Kawano ,  Takeshi Ikumura

IPC分类号： E02F9/08

CPC分类号： E02F3/3405 ,  E02F3/3414 ,  E02F3/432 ,  E02F9/0816 ,  E02F9/2275 ,  Y10S414/131

摘要： A loader work machine includes: a first lift link (81) and a second lift links (82) disposed forwardly of the first lift link (81) for vertically pivotally supporting a base portion of an arm (77) at a rear upper portion of a machine body frame (1); an arm cylinder (79) provided between the base portion of the arm (77) and a rear lower portion of the machine body frame for lifting up/down the arm (77); a first link support shaft (85) for pivotally supporting a lower base portion of the first lift link (81) to the machine body frame (1); a second link support shaft (86) for pivotally connecting a base portion of the second lift link (82) to the machine body frame (1), at a position forwardly of the first link support shaft; a first arm support shaft (88) for pivotally supporting a base portion of the arm (77) to an upper free end of the first lift link (81); a second arm support shaft (89) for pivotally connecting a base portion of the arm (77) to a free end of the second lift link (82), at a position forwardly of the first arm support shaft (88); a lower cylinder support shaft (91) for pivotally connecting a lower end of the arm cylinder (79) to the machine body frame (1); and an upper cylinder support shaft (92) for pivotally connecting an upper leading end portion of the arm cylinder (79) to the base portion of the arm (77). A leading end of the arm (77) is lifting up/down forwardly of the machine body frame (1). Positional relationship among the first link support shaft (85), the second link support shaft (86), the first arm support shaft (88) and the second arm support shaft (89) is set such that an upper portion of the first lift link (81) comes into substantial agreement with a rear end of the machine body (1), when the upper free end of the first lift link (81) is pivoted maximally rearward in the course of transition of the arm (77) from a lowermost state realized lifting down the arm (77) to an uppermost state realized by lifting up the arm (77).

公开(公告)号：US20100143086A1

公开(公告)日：2010-06-10

申请号：US12531789

申请日：2009-03-25

申请人： Toyoaki Yasuda ,  Masanori Fujino ,  Toshihiko Takemura ,  Yasuo Nakata ,  Yoshitaka Matsubara ,  Yoshihiro Ueda ,  Yuuki Takano ,  Yusuke Kawai ,  Ryohei Sumiyoshi ,  Hiroyuki Anami ,  Naoya Muramoto ,  Kenji Mitsui ,  Youhei Kawano ,  Takeshi Ikumura

发明人： Toyoaki Yasuda ,  Masanori Fujino ,  Toshihiko Takemura ,  Yasuo Nakata ,  Yoshitaka Matsubara ,  Yoshihiro Ueda ,  Yuuki Takano ,  Yusuke Kawai ,  Ryohei Sumiyoshi ,  Hiroyuki Anami ,  Naoya Muramoto ,  Kenji Mitsui ,  Youhei Kawano ,  Takeshi Ikumura

IPC分类号： E02F3/28 ,  B62D21/00 ,  E02F9/16 ,  E02F3/36

CPC分类号： E02F3/3405 ,  E02F3/3414 ,  E02F3/432 ,  E02F9/0816 ,  E02F9/2275 ,  Y10S414/131

摘要： An improvement of a loader work machine is disclosed. A machine body frame includes a frame body having a bottom wall and a pair or right/left side walls, and a pair of right/left support frame members connected to a rear end of the frame body. A cabin is mounted on the machine body frame. A transverse connecting member is disposed rearwardly of the cabin for connecting the pair of right/left support frame members to right/left sides thereof, respectively. A pair of right/left arms are disposed on right/left sides of the machine body frame, with base portions thereof being vertically pivotally supported to the pair of right/left support frame members, respectively. A pair of right/left arm cylinders are provided between the base portions of the arms and the rear portions of the machine body frame for lifting up/down the arms. A hood is provided at the rear end of the frame body and downwardly of the transverse connecting member between the pair of right/left support frame members, for housing an engine. The transverse connecting member includes a front wall plate and an upper wall plate projecting rearward from an upper end of the front wall plate. The upper wall plate of the transverse connecting member is disposed more downwardly than the vertical center of the cabin. A rear portion of the upper wall plate is inclined downwardly rearward. A hood upper wall is provided for covering a rear upper side between the pair of right/left support frame members. A front end portion of the hood upper wall is connected to the rear portion of the upper wall plate of the transverse connecting member. The hood upper wall is inclined downwardly rearward in correspondence with the rear portion of the upper wall plate.

摘要翻译： 公开了装载机作业机的改进。 机身框架包括具有底壁和一对或右/左侧壁的框体，以及连接到框体的后端的一对右/左支撑框架构件。 机舱安装在机身框架上。 横向连接构件设置在车厢的后方，用于将一对右/左支撑框架构件分别连接到其左/右侧。 一对右/左臂设置在机体框架的左右两侧，其基部分别垂直地枢转地支撑在一对右/左支撑框架构件上。 在臂的基部和机体框架的后部之间设置有一对右/左臂气缸，用于提升/降低臂。 在框架体的后端设置有罩，并且在左右一对支撑框架构件之间的横向连接构件的下方设置有用于容纳发动机的罩。 横向连接构件包括从前壁板的上端向后突出的前壁板和上壁板。 横向连接构件的上壁板比座舱的垂直中心更向下设置。 上壁板的后部向后倾斜。 设置有罩上壁，用于覆盖所述一对右/左支撑框架构件之间的后上侧。 发动机罩上壁的前端部分连接到横向连接件的上壁板的后部。 罩上壁相对于上壁板的后部向后倾斜。

公开(公告)号：US20100034062A1

公开(公告)日：2010-02-11

申请号：US12515179

申请日：2007-11-16

申请人： Masayoshi Nakamura ,  Akihiko Nishioka ,  Yasuo Nakata

发明人： Masayoshi Nakamura ,  Akihiko Nishioka ,  Yasuo Nakata

IPC分类号： G11B7/00

CPC分类号： G11B7/0906 ,  G11B7/0956

摘要： A tracking apparatus for an optical information reproduction apparatus includes the following: a photoelectric detector (1) in which a far-field pattern of a light spot converged on a recording medium is formed across a divided light-receiving cell; an arithmetic unit (2) for outputting at least a pair of arithmetic signals from the output of the photoelectric detector (1); a phase comparator (4) for detecting a phase difference between the output signals of the arithmetic unit (2); an absolute value detector (8) for detecting an absolute value of the output signal of the phase comparator (4); a level detector (9) for generating a signal that indicates whether or not a convergence position of the light spot is located off an information track by detecting a predetermined number of times or more the output signal of the absolute value detector (8) has become larger than a predetermined value; a sensitivity detector (10) for detecting and outputting the sensitivity of the level detector (9) by observing the output signal of the level detector (9); and a controller (11) for adjusting the detection conditions of the level detector (9) so that the output of the sensitivity detector (10) is a predetermined value.

摘要翻译： 光信息再现装置的跟踪装置包括：光束检测器（1），其中在分割的光接收单元上形成会聚在记录介质上的光点的远场图案; 用于从光电检测器（1）的输出端输出至少一对算术信号的算术单元（2）; 相位比较器（4），用于检测运算单元（2）的输出信号之间的相位差; 绝对值检测器（8），用于检测相位比较器（4）的输出信号的绝对值; 电平检测器（9），用于通过检测绝对值检测器（8）的输出信号的预定次数或更多次来产生指示光点的会聚位置是否位于信息轨道之外的信号 大于预定值; 灵敏度检测器（10），用于通过观察电平检测器（9）的输出信号来检测和输出电平检测器（9）的灵敏度; 以及用于调整电平检测器（9）的检测条件使得灵敏度检测器（10）的输出为预定值的控制器（11）。

公开(公告)号：US07397752B2

公开(公告)日：2008-07-08

申请号：US10846282

申请日：2004-05-14

申请人： Tetsuo Ueyama ,  Kohji Minami ,  Tomoyuki Miyake ,  Yasuo Nakata

发明人： Tetsuo Ueyama ,  Kohji Minami ,  Tomoyuki Miyake ,  Yasuo Nakata

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/1365 ,  G11B11/10545 ,  G11B11/10597 ,  G11B2007/0006

摘要： A pickup for a magneto-optical recording medium is provided, which improves quality of reproduced signals by eliminating a phase difference between the polarizations and is capable of coping with magneto-optical recording media of different recording/reproducing systems. A return light beam of light reflected by a magneto-optical recording medium is polarized and separated into ± first-order diffracted lights through a light-branching diffraction element provided between a light source and an objective lens. The ± first-order diffracted lights are compensated for their phases through first and second phase compensation elements so that there is no phase difference between the polarizations, and are, further, polarized and separated through the first and second polarization/separation elements, and are received by first and second light detectors. Use of the first and second phase compensation elements having different phase compensation amounts makes it possible to cope with the magneto-optical recording media of different recording/reproducing systems.

摘要翻译： 提供了一种用于磁光记录介质的拾取器，其通过消除极化之间的相位差来提高再现信号的质量，并且能够应对不同记录/再现系统的磁光记录介质。 由磁光记录介质反射的返回光束被偏振并通过设置在光源和物镜之间的光分支衍射元件分离为±一级衍射光。 ±一级衍射光通过第一和第二相位补偿元件对其相位进行补偿，使得在极化之间不存在相位差，并且还通过第一和第二偏振/分离元件偏振和分离，并且 由第一和第二光检测器接收。 使用具有不同相位补偿量的第一和第二相位补偿元件使得可以应对不同记录/再现系统的磁光记录介质。

公开(公告)号：US20080117789A1

公开(公告)日：2008-05-22

申请号：US11940796

申请日：2007-11-15

申请人： Taizoh Yokota ,  Osamu Miyazaki ,  Yasuo Nakata

发明人： Taizoh Yokota ,  Osamu Miyazaki ,  Yasuo Nakata

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1376 ,  G11B7/1365 ,  G11B7/1374 ,  G11B7/13925 ,  G11B7/1395 ,  G11B2007/0006

摘要： In the optical pickup device, a luminous flux emitted from a blue-violet laser as S wave to a blue-violet PBS, passes through a half-wave plate, and is reflected by the blue-violet PBS and a total reflection mirror, before being applied to a BD disc via an objective lens. Luminous fluxes, which were emitted respectively from an infrared laser emitting device and a red laser emitting device and were reflected respectively by infrared and red PBSs, among aligned infrared, red and blue-violets PBSs, before reaching the blue-violet PBS, are reflected by the blue-violet PBS. The luminous fluxes emitted from the blue-violet laser emitting device as P waves pass the blue-violet PBS, and are respectively applied to a CD disc, a DVD disc, or a HD-DVD disc via an diffractive object lens. Thus, it becomes possible to write or read access to four kinds of discs with three wavelengths.

摘要翻译： 在光拾取装置中，从蓝紫激光作为S波向蓝紫色PBS发射的光束通过半波片，并在蓝紫色PBS和全反射镜之前反射，之前 通过物镜应用于BD盘。 分别从红外激光发射装置和红色激光发射装置分别发射的红光和红色PBS在对准的红外线，红色和蓝紫罗兰PBS中的光通量在达到蓝紫色PBS之前被反射 由蓝紫色PBS。 从蓝紫色激光发射装置发出的光通量为P波通过蓝紫色PBS，分别通过衍射物镜施加到CD盘，DVD盘或HD-DVD盘。 因此，可以对具有三个波长的四种盘进行写入或读取。

公开(公告)号：US20070263882A1

公开(公告)日：2007-11-15

申请号：US11662927

申请日：2006-04-25

申请人： Yasuo Nakata

发明人： Yasuo Nakata

IPC分类号： H03G7/00

CPC分类号： G11B20/10009 ,  G11B20/10027 ,  G11B20/10481 ,  H03F3/181 ,  H03F2200/03 ,  H03F2200/78 ,  H03G3/30

摘要： In a signal reproducing device, for securing the stability in the steady state while enhancing the response of automatic gain control, a variable gain amplifier 109 adjusts the amplitude of a reproduction signal outputted from a head amplifier 108. A gain control section 112 increases/decreases the gain in the variable gain amplifier 109 by a predetermined change amount according to the large-small relationship of the comparison result outputted from a comparator 111. The gain change amount control circuit 113 controls the change amount of the gain in the gain control section 112 according to the frequency of inversion of the large-small relationship of the comparison result outputted from the comparator 111.

摘要翻译： 在信号再现装置中，为了在增强自动增益控制的响应的同时确保稳定状态，可变增益放大器109调整从头放大器108输出的再现信号的幅度。增益控制部分112增加/减小 根据从比较器111输出的比较结果的大小关系，将可变增益放大器109的增益设定为预定的变化量。 增益变化量控制电路113根据从比较器111输出的比较结果的大小关系的反转频率来控制增益控制部分112中的增益变化量。

公开(公告)号：US20070156945A1

公开(公告)日：2007-07-05

申请号：US10582216

申请日：2004-12-06

申请人： Yasuo Nakata ,  Naoyuki Kashii

发明人： Yasuo Nakata ,  Naoyuki Kashii

IPC分类号： G06F3/06

CPC分类号： G11B20/12 ,  G11B20/10

摘要： The read out data is written in into the buffer 10 and when it is judged as it is not a desired user block by the user block judging means 7, the address pointer is controlled to keep the original position in the buffer 10 by the address pointer generating means 8, thereby enabling to over-write the user data from the beginning of the written in link section data to abolish the link section data. Thereby, when the data which are written in by a hack light system is read out, unnecessary data at the link section would not be stored in the buffer 10, there is required no buffer space for storing the data at the link section, and it is not required to store the data that has discontinuity due to the data lacking in the buffer 10, and thus it is possible to provide such a signal processing circuit that can reduce burden to the system control means 11 and can shorten the access time to the data.

摘要翻译： 读取的数据被写入缓冲器10中，并且当用户块判断装置7判断为不是期望的用户块时，地址指针被控制以通过地址指针保持在缓冲器10中的原始位置 生成装置8，从而能够从写入的链接部分数据的开头重写用户数据，以废除链接部分数据。 因此，当读出由黑客系统写入的数据时，链接部分的不必要的数据将不会存储在缓冲器10中，不需要在链接部分存储数据的缓冲空间， 不需要存储由于缓冲器10中缺少的数据而具有不连续性的数据，因此可以提供这样的信号处理电路，其可以减轻对系统控制装置11的负担，并且可以缩短对于系统控制装置11的访问时间。 数据。

公开(公告)号：US20060077802A1

公开(公告)日：2006-04-13

申请号：US11203183

申请日：2005-08-15

申请人： Hiroshi Koshida ,  Masanori Harui ,  Yasuo Nakata ,  Yoshimitsu Saka ,  Koju Konno ,  Masamichi Katada

发明人： Hiroshi Koshida ,  Masanori Harui ,  Yasuo Nakata ,  Yoshimitsu Saka ,  Koju Konno ,  Masamichi Katada

IPC分类号： G11B7/00

CPC分类号： G11B7/0948

摘要： In an optical disk device, an output terminal is connected to an optical pickup, and a preceding sub-beam returning light signal which is electrical signal obtained by converting returning light of a sub-beam preceding an main beam is output through the output terminal. A defect period detection circuit detects a defect period during which a beam is passing through a defective portion on an optical disk based on the preceding sub-beam returning light signal from the output terminal. A servo hold circuit holds tracking servo during the detected defect period. Therefore, even when an amplitude of an RF signal is quickly attenuated during the defect period, the defect period is detected at an early stage of the attenuation, thereby suppressing a change in an amplitude of a tracking error signal to a small level.

摘要翻译： 在光盘装置中，输出端子连接到光学拾取器，并且通过输出端子输出作为通过转换主光束之前的子光束的返回光而获得的电信号的先前的子光束返回光信号。 缺陷期检测电路根据来自输出端子的前述子光束返回光信号，检测光束通过光盘上的缺陷部分的缺陷期间。 伺服保持电路在检测到的缺陷期间保持跟踪伺服。 因此，即使当在缺陷期间RF信号的幅度被快速衰减时，在衰减的早期也检测到缺陷期，从而将跟踪误差信号的振幅的变化抑制到小的水平。