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1. 发明申请

US20170276055A1 HYDRAULIC PUMP/MOTOR WITH ROTATION DETECTION MECHANISM 审中-公开
公开(公告)号：US20170276055A1
公开(公告)日：2017-09-28
申请号：US15504137
申请日：2014-08-22
申请人： Komatsu Ltd.
发明人： Jun Nabata , Takashi Ochiai , Shuuji Hori
IPC分类号： F01P5/04 , G11B7/09 , F16K31/06 , F01P7/04
CPC分类号： F01P5/04 , F01P7/044 , F04B1/24 , F04B2201/0805 , F16K31/0682 , G11B7/0903
摘要： A hydraulic pump/motor includes a rotational shaft rotatably attached inside a casing, a cylinder block configured to rotate together with the rotational shaft, a plurality of pistons, a swash plate, a valve plate, and a rotation detection mechanism. The rotation detection mechanism includes a detection target section having three or more recesses formed on an outer peripheral surface of the cylinder block in a unique arrangement pattern with different arc lengths between the three continuous recesses with respect to one rotational direction of the rotational shaft and being formed so as not to include the unique arrangement pattern with respect to the other rotational direction of the rotational shaft, each of the three or more recesses having a cross section having a same semicircular shape perpendicular to a direction of the rotational shaft; and a rotation sensor arranged in the casing in a state of facing the detection target section.

2. 发明授权

US09672860B2 Recording/reproducing apparatus 有权
公开(公告)号：US09672860B2
公开(公告)日：2017-06-06
申请号：US15050665
申请日：2016-02-23
申请人： Kabushiki Kaisha Toshiba
发明人： Hideaki Okano , Kazuo Watabe , Akihito Ogawa , Takashi Usui
IPC分类号： G11B7/00 , G11B7/1392 , G11B7/09 , G11B7/1353 , G11B7/24038 , G11B7/2405 , G11B7/1374
CPC分类号： G11B7/13927 , G11B7/0053 , G11B7/0903 , G11B7/0909 , G11B7/1353 , G11B7/1374 , G11B7/24038 , G11B7/2405
摘要： According to an embodiment, a recording/reproducing apparatus includes a diffraction grating and a light-receiving element. The diffraction grating divides return light from the guide layer in accordance with areas. The areas include a first area and a second area that does not overlap the first area. The light-receiving element includes (i) a first detecting cell group which receives a zero-order beam to which astigmatism is imparted, (ii) a second detecting cell group which receives at least one of a positive and negative first-order beam, which passes the first area and made astigmatic, and (iii) a third detecting cell group which receives at least one of a positive and negative first-order beam, which passes the second area and made astigmatic.

3. 发明申请

US20150318010A1 OPTICAL PICKUP AND OPTICAL RECORDING AND REPRODUCING DEVICE 有权
标题翻译：光学拾取和光学记录和再现设备
公开(公告)号：US20150318010A1
公开(公告)日：2015-11-05
申请号：US14650139
申请日：2013-06-27
申请人： PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
发明人： Jun-ichi ASADA , Yuichi TAKAHASHI , Hiroaki MATSUMIYA , Kazuo MOMOO
IPC分类号： G11B7/09 , G11B7/1365 , G11B7/1353
CPC分类号： G11B7/00458 , G02B5/1871 , G02B5/3016 , G02B27/286 , G11B7/0903 , G11B7/0912 , G11B7/131 , G11B7/1353 , G11B7/1365
摘要： An optical pickup includes a light source 1; a diffraction element 2 for generating a write main beam and a read sub-beam via diffraction; an objective lens 5; a wavelength plate 9; a polarization hologram element 7 having a plurality of diffraction regions with different diffraction characteristics, designed so that each diffraction region separates a light beam reflected from the optical storage medium and transmitted through the wavelength plate into a 0th order light beam and ±1st order light beams; an actuator 11; and a photodetector 10 configured to detect a light beam reflected from the optical storage medium 6 and diffracted by the polarization hologram element 7. The photodetector 10 generates an RF signal from a detection result concerning a 0th order light beam derived from the main beam, generates a focus error signal and a tracking error signal from a detection result concerning one of ±1st order light beams derived from the main beam, and generates a signal indicating that data has been recorded normally from a detection result concerning a 0th order light beam derived from the sub-beam.
摘要翻译：光拾取器包括光源1; 用于通过衍射产生写入主光束和读取子光束的衍射元件2; 物镜5; 波片9; 具有多个具有不同衍射特性的衍射区域的偏振全息元件7被设计成使得每个衍射区域将从光存储介质反射的光束分离并透过波长板成为第0级光束和±1级光束 ; 致动器11; 以及光检测器10，其被配置为检测从光存储介质6反射并被偏振全息元件7衍射的光束。光电检测器10根据从主光束导出的第0级光束的检测结果产生RF信号，产生来自关于从主光束导出的±1级光束中的一个的检测结果的聚焦误差信号和跟踪误差信号，并且从根据来自于...的第0级光束的检测结果生成表示数据已被正常记录的信号子光束。

4. 发明授权

US09142243B2 Optical pickup and optical information storage system including the same 有权
标题翻译：光拾取和光信息存储系统包括相同的
公开(公告)号：US09142243B2
公开(公告)日：2015-09-22
申请号：US14187579
申请日：2014-02-24
申请人： Toshiba Samsung Storage Technology Korea Corporation
发明人： Ki-bok Kim , Jin-ho Jeong , Eun-goo Kim , Jung-bae Oh , Seung-man Han
IPC分类号： G11B7/1353 , G11B7/09 , G11B7/1275 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/1275 , G11B2007/0006
摘要： Provided are an optical pickup and an optical information storage system including the same. The optical pickup includes a photodetector that receives a main light beam and a plurality of sub-light beams reflected from an information storage medium and diffracted by a diffracting element. The photo detector detects a tracking error signal using zeroth-order light as the main light beam and using one of first-order light and third-order light as the sub-light beam based on a type of an optical information storage medium.
摘要翻译：提供了一种光拾取器和包括其的光学信息存储系统。光学拾取器包括：光电检测器，其接收从信息存储介质反射并被衍射元件衍射的主光束和多个子光束。光检测器基于光信息存储介质的类型，使用零级光作为主光束并且使用一次光和三次光中的一个作为子光束来检测跟踪误差信号。

5. 发明授权

US09007883B2 Optical recording and reading method, optical recording and reading apparatus, optical recording medium, and method for producing an optical recording medium 有权
标题翻译：光学记录和读取方法，光学记录和读取装置，光学记录介质和用于制造光学记录介质的方法
公开(公告)号：US09007883B2
公开(公告)日：2015-04-14
申请号：US14103082
申请日：2013-12-11
申请人： Motohiro Inoue , Tomoki Ushida , Atsuko Kosuda , Takashi Kikukawa
发明人： Motohiro Inoue , Tomoki Ushida , Atsuko Kosuda , Takashi Kikukawa
IPC分类号： G11B7/24 , G11B7/09 , G11B7/1267 , G11B7/24018 , G11B7/2403 , G11B7/24038 , G11B7/2405 , G11B7/24079 , G11B7/14
CPC分类号： G11B7/0903 , G11B7/09 , G11B7/1267 , G11B7/14 , G11B7/24018 , G11B7/2403 , G11B7/24038 , G11B7/2405 , G11B7/24079
摘要： An optical recording medium includes a recording and reading layer that is previously staked or formed afterword and has no concavo-convex pattern for tracking control, and a servo layer in which a concavo-convex pattern or a groove for tracking control is formed. Information can be recorded in the recording and reading layer while tracking is performed using the servo layer.
摘要翻译：光记录介质包括预先被放样或形成的后记并且没有用于跟踪控制的凹凸图案的记录和读取层，以及形成用于跟踪控制的凹凸图案或凹槽的伺服层。当使用伺服层执行跟踪时，信息可以被记录在记录和读取层中。

6. 发明授权

US08971162B1 Optical disc device and method for driving the same 有权
标题翻译：光盘装置及其驱动方法
公开(公告)号：US08971162B1
公开(公告)日：2015-03-03
申请号：US14461488
申请日：2014-08-18
申请人： Funai Electric Co., Ltd.
发明人： Mamoru Kuwajima
IPC分类号： G11B7/00 , G11B7/09
CPC分类号： G11B7/094 , G11B7/0903 , G11B7/0945 , G11B7/0948
摘要： Provided is an optical disc device including: an optical pickup which includes an objective lens and a receiver unit which receives light reflected off an optical disc; a signal processing unit which generates a main push-pull signal and sub push-pull signals from signals from the receiver unit, and obtains a signal obtained by subtracting the main push-pull signal from the sub push-pull signal multiplied K times, to generate a tracking-error signal; and a control unit which performs a midpoint servo process, an offset process of adding an offset value to a lens-error signal indicating displacement of the objective lens, a stabilization awaiting process of waiting for oscillation of the optical disc to stabilize, a measurement process of measuring the tracking-error signal, and a K value adjusting process of adjusting a value of K in response to a result of the measurement process.
摘要翻译：提供了一种光盘装置，包括：包括物镜的光学拾取器和接收从光盘反射的光的接收器单元; 信号处理单元，其从来自接收器单元的信号产生主推挽信号和次推挽信号，并且获得通过将乘以K次的次推挽信号减去主推挽信号而获得的信号到产生跟踪误差信号; 以及控制单元，其执行中点伺服处理，将偏移值添加到指示物镜的位移的透镜误差信号的偏移处理，等待光盘的振荡稳定的稳定等待处理，测量处理测量跟踪误差信号，以及响应于测量处理结果调整K值的K值调整过程。

7. 发明申请

US20140321251A1 OPTICAL HEAD DEVICE AND OPTICAL DISC DEVICE 有权
标题翻译：光头设备和光盘设备
公开(公告)号：US20140321251A1
公开(公告)日：2014-10-30
申请号：US14357745
申请日：2012-11-26
申请人： Mitsubishi Electric Corporation
发明人： Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
IPC分类号： G11B7/1353
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/094 , G11B7/125 , G11B7/131 , G11B2007/0013
摘要： An optical head device (11) provided with: an optical element (36) for transmissively diffracting a light beam emitted from a semiconductor laser (34), generating a zero-order diffracted light beam and ±1-order diffracted light beams; and a photodetector (40) for receiving the zero-order diffracted light beam and the +1-order diffracted light beam after reflection from an optical disc (2). The photodetector (40) includes a primary light receiving section (400) for receiving the zero-order diffracted light beam, and a first secondary light receiving section (401) disposed outward from the primary light receiving section (400). The first secondary light receiving section (401) is positioned to detect an outer portion of the received light spot of the +1-order diffracted light beam, performs photoelectric conversion of this portion, and outputs a secondary detected signal.
摘要翻译：一种光学头装置（11），具有：用于透射衍射从半导体激光器（34）发射的光束的光学元件（36），产生零级衍射光束和±1级衍射光束; 以及用于在从光盘（2）反射之后接收零级衍射光束和+ 1级衍射光束的光电检测器（40）。光电检测器（40）包括用于接收零级衍射光束的初级光接收部分（400）和从初级光接收部分（400）向外设置的第一副光接收部分（401）。第一次级光接收部（401）被定位成检测+ 1级衍射光束的接收光点的外部，进行该部分的光电转换，并输出二次检测信号。

8. 发明授权

US08861322B2 Optical pickup and optical read/write apparatus 有权
标题翻译：光学拾取和光学读/写设备
公开(公告)号：US08861322B2
公开(公告)日：2014-10-14
申请号：US13600386
申请日：2012-08-31
申请人： Hiroaki Matsumiya , Kazuo Momoo
发明人： Hiroaki Matsumiya , Kazuo Momoo
IPC分类号： G11B7/135 , G11B7/131 , G11B7/14 , G11B7/127 , G11B7/09 , G11B7/0045 , G11B7/1381 , G11B7/00 , G11B7/003
CPC分类号： G11B7/0903 , G11B7/003 , G11B7/00458 , G11B7/127 , G11B7/131 , G11B7/1381 , G11B7/14 , G11B2007/0013
摘要： An exemplary optical pickup comprises: a light source with first and second emission points; an optical branching element which branches light emitted from the first emission point into multiple light beams including a first main beam and first sub-beams and which also branches light emitted from the second emission point into multiple light beams including a second main beam and second sub-beams; an optical system which condenses the multiple light beams produced by the optical branching element onto an optical storage medium, thereby making the first and second main beams form a write light beam spot and a read light beam spot, respectively, on a target recording track on the storage medium and making the first and second sub-beams form reference light beam spots and other light beam spots somewhere on the storage medium other than the target recording track.
摘要翻译：示例性光学拾取器包括：具有第一和第二发射点的光源; 将从第一发射点发射的光分支成包括第一主光束和第一子光束的多个光束并且还将从第二发射点发射的光分支成包括第二主光束和第二子光束的多个光束的光分支元件光束光学系统，其将由光分路器产生的多个光束会聚到光存储介质上，从而使第一和第二主光束分别在目标记录轨道上形成写入光束点和读取光束点，存储介质并使第一和第二子光束在存储介质上除了目标记录轨道之外的某处形成参考光束点和其他光束点。

9. 发明授权

US08824254B2 Optical disk device 有权
标题翻译：光盘装置
公开(公告)号：US08824254B2
公开(公告)日：2014-09-02
申请号：US13862000
申请日：2013-04-12
申请人： Funai Electric Co., Ltd.
发明人： Syunsuke Sehara , Shinya Shimizu
IPC分类号： G11B7/00 , G11B20/10 , G11B7/09
CPC分类号： G11B20/10037 , G11B7/0903 , G11B7/094 , G11B20/10046 , G11B20/10388 , G11B2220/2537
摘要： An optical disc device includes an optical pickup that causes a laser beam to be incident on an optical disc and detects a reflected beam, an A/D converter that converts into a digital signal a plurality of analog signals obtained from the reflected beam detected by the optical pickup, an error signal generating circuit that generates a servo signal for the optical pickup based on the digital signal converted by the A/D converter, a low-pass filter that removes noise of a specific band included in the servo error signal generated by the error signal generating circuit, a main processor that switches a noise removal band of the low-pass filter based on states of the optical disc, and an actuator that performs servo control for the optical pickup based on the servo error signal from which the noise has been removed by the low-pass filter.
摘要翻译：光盘装置包括：光学拾取器，其使激光束入射到光盘上并检测反射光束; A / D转换器，其将从由所述反射光束检测到的反射光束获得的多个模拟信号转换成数字信号; 光拾取器，基于由A / D转换器转换的数字信号产生用于光学拾取器的伺服信号的误差信号产生电路，去除包含在由A / D转换器产生的伺服误差信号中的特定频带的噪声的低通滤波器，误差信号发生电路，基于光盘的状态切换低通滤波器的噪声去除带的主处理器，以及基于伺服误差信号执行光学拾取器的伺服控制的致动器，其中噪声已被低通滤波器去除。

10. 发明授权

US08737180B2 Optical pickup device and optical disc apparatus for recording and reproducing information on and from optical disc including plurality of recording layers 有权
标题翻译：用于在包括多个记录层的光盘上记录和再现信息的光学拾取装置和光盘装置
公开(公告)号：US08737180B2
公开(公告)日：2014-05-27
申请号：US13597787
申请日：2012-08-29
申请人： Kazuyoshi Yamazaki , Daisuke Tomita
发明人： Kazuyoshi Yamazaki , Daisuke Tomita
IPC分类号： G11B7/00
CPC分类号： G11B7/135 , G11B7/0903 , G11B7/0909 , G11B7/131 , G11B7/1353 , G11B2007/0013
摘要： Provided is an optical pickup device that suppresses a fluctuation of a tracking error signal caused by stray light when recording/reproducing information on/from an optical disc including a plurality of recording layers and attains size reduction. It includes a laser diode emitting laser light of about 405 nm in wavelength, an objective lens irradiating the optical disc with an optical beam emitted from the laser diode and having a numerical aperture of about 0.85, and a detector including a detection part receiving the optical beam reflected from the optical disc. An optical magnification from the optical disc to the detector is set within a range from about 10× to 15×.
摘要翻译：提供了一种光学拾取装置，其在从包含多个记录层的光盘上记录/再现信息时，抑制由杂散光引起的跟踪误差信号的波动，并获得尺寸减小。其包括发射波长约405nm的激光的激光二极管，用从激光二极管发射的光束照射光盘并且具有约0.85的数值孔径的物镜，以及包括接收光学器件的检测部件的检测器光束从光盘反射。从光盘到检测器的光学倍率设定在大约10×15×的范围内。

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