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91.发明授权Optical disk apparatus for reproducing information from an optical recording medium 有权用于从光学记录介质再现信息的光盘装置
公开(公告)号：US6147952A
公开(公告)日：2000-11-14
申请号：US272310
申请日：1999-03-19
Applicant: Kazuo Watabe
Inventor： Kazuo Watabe
CPC classification number: G11B7/131 , G11B7/005 , G11B7/00718 , G11B7/0901
Abstract: An optical disk apparatus is capable of reproducing information from an optical disk 10. The optical disk apparatus mainly includes an illuminating unit which is formed from a semiconductor laser 14, a collimator lens 15, a polarization beam splitter (PBS) 16 and a -wavelength converter 17, as well as an objective lens 18, that focuses a light beam onto the optical disk 10; a two-segment split photo detector 21 which detects the light beam reflected by the optical disk 10; and a signal processing circuit 27 which processes a signal obtained by the two-segment split photo detector 21 to output a signal for reproduction. The two-segment split photo detector 21 has a divisional line 22 parallel to a line tangent to the track of the optical disk 10, and the line 22 is shifted away from the center line of the zero-order diffracted beam by a distance d in the direction of the disk radius, so that the light receiving surface of the photo detector 21 is divided into two areas or segments 23a and 23b by the divisional line 22. The signal processing circuit 27 is capable of processing the difference between and the sum of signal values detected in the detecting areas 22a and 22b, and it outputs the difference signal or sum signal as the playback signal of the optical desk 10.
Abstract translation: 光盘装置能够从光盘10再现信息。光盘装置主要包括由半导体激光器14，准直透镜15，偏振分束器（PBS）16和+ Z形成的照明单元 波长转换器17以及将光束聚焦到光盘10上的物镜18; 检测由光盘10反射的光束的两段分割光电检测器21; 以及信号处理电路27，处理由两段分割光检测器21获得的信号，以输出用于再现的信号。 双段分割光电检测器21具有平行于与光盘10的轨道相切的线的分割线22，并且线22从零级衍射光束的中心线偏离距离d 光盘半径的方向，使得光电检测器21的光接收表面被划分线22划分成两个区域或段23a和23b。信号处理电路27能够处理和/ 在检测区域22a和22b中检测的信号值，并且输出差分信号或和信号作为光学台10的重放信号。
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公开(公告)号：US08630157B2
公开(公告)日：2014-01-14
申请号：US13071592
申请日：2011-03-25
Applicant: Kazuo Watabe , Akihito Ogawa , Hideaki Okano , Takashi Usui
Inventor： Kazuo Watabe , Akihito Ogawa , Hideaki Okano , Takashi Usui
CPC classification number: G11B7/00781 , G11B7/0065 , G11B7/083
Abstract: According to one embodiment, a data reproducing apparatus includes a data recording medium, light source unit, light application unit, photodetector unit and control unit. An address mark string including address marks is formed on the data recording medium. The address marks are spaced from each other by a distance depending on address data. The light application unit is configured to split the light beam into a first branch light beam and a second branch light beam and apply the first and second branch light beams to the address mark string at different angles. The photodetector unit is configured to detect first reflected light beams and second reflected light beams from the address mark string to generate image data. The first and second reflected light beams result from the first and second branch light beams, respectively. The control unit is configured to reproduce address data based on the image data.
Abstract translation: 根据一个实施例，数据再现装置包括数据记录介质，光源单元，光应用单元，光电检测器单元和控制单元。 包括地址标记的地址标记串形成在数据记录介质上。 地址标记根据地址数据彼此间隔一定距离。 光施加单元被配置为将光束分成第一分支光束和第二分支光束，并且以不同的角度将第一和第二分支光束施加到地址标记串。 光检测器单元被配置为从地址标记串检测第一反射光束和第二反射光束以产生图像数据。 第一和第二反射光束分别由第一和第二分支光束产生。 控制单元被配置为基于图像数据再现地址数据。
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93.发明授权Focus servo control device, and information recording/reproducing device using the same 失效聚焦伺服控制装置以及使用其的信息记录/再现装置公开(公告)号：US08553508B2
公开(公告)日：2013-10-08
申请号：US13421503
申请日：2012-03-15
Applicant: Takashi Usui , Kazuo Watabe , Hideaki Okano , Chikara Tanioka , Akihito Ogawa , Kazuaki Doi
Inventor： Takashi Usui , Kazuo Watabe , Hideaki Okano , Chikara Tanioka , Akihito Ogawa , Kazuaki Doi
CPC classification number: G11B7/08511 , G11B7/0908 , G11B7/1376 , G11B7/24038 , G11B7/2405 , G11B2007/0013
Abstract: A focus servo control device includes a first detector, first controller, second detector, and second controller. The first detector detects a first focus error signal. The first controller controls the objective lens based on the first focus error signal, so that a focal point of the first laser agrees with the guide layer. The second detector detects a second focus error signal. The second controller changes a relative distance between the focal point of the second laser and the focal point of the first laser, so that the focal point of the second laser agrees with a target recording/reproducing layer.
Abstract translation: 聚焦伺服控制装置包括第一检测器，第一控制器，第二检测器和第二控制器。 第一检测器检测第一聚焦误差信号。 第一控制器基于第一聚焦误差信号控制物镜，使得第一激光的焦点与引导层一致。 第二检测器检测第二聚焦误差信号。 第二控制器改变第二激光器的焦点与第一激光器的焦点之间的相对距离，使得第二激光器的焦点与目标记录/再现层一致。
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公开(公告)号：US20130194903A1
公开(公告)日：2013-08-01
申请号：US13681180
申请日：2012-11-19
Applicant: Kazuo Watabe
Inventor： Kazuo Watabe
IPC: G11B19/20
CPC classification number: G11B19/2009 , G11B7/1275 , G11B7/24 , G11B7/24038
Abstract: According to one embodiment, electronic device including, turntable configured to rotate recording medium including recording layer along plane on which surface of recording layer extends, servo data providing mechanism configured to provide on surface of turntable facing recording layer of recording medium and provides servo data used for recording of data on recoding medium or reproduction of data from recording medium, and recording and reproduction module configured to irradiate recording layer of recording medium with light having first wavelength and light having second wavelength different from light having first wavelength from opposite side of recording medium with respect to turntable.
Abstract translation: 根据一个实施例，电子设备包括：转盘，被配置为沿着记录层的表面延伸的平面旋转包括记录层的记录介质;伺服数据提供机构，配置成在记录介质的面向转台的记录层的表面上提供并提供使用的伺服数据 用于在记录介质上记录数据或从记录介质再现数据;以及记录和再现模块，被配置为用记录介质的记录层照射具有第一波长的光和具有不同于具有第一波长的光的第二波长的光与记录介质的相对侧 关于转盘。
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公开(公告)号：US20110158061A1
公开(公告)日：2011-06-30
申请号：US13045707
申请日：2011-03-11
Applicant: Kazuo Watabe , Hideo Ando , Sumitaka Maruyama , Yutaka Kashihara , Akihito Ogawa
Inventor： Kazuo Watabe , Hideo Ando , Sumitaka Maruyama , Yutaka Kashihara , Akihito Ogawa
CPC classification number: G11B7/24035 , G11B7/0079 , G11B7/1267 , G11B7/24038 , G11B20/1217 , G11B2220/235 , G11B2220/2537
Abstract: According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out area, data area, and middle area are arranged from an inner circumference of the layer 1. A guard track zone is arranged on a side of the data area in the data lead-out area, and a reference code zone, R physical format information zone, recording management zone, and drive test zone are arranged in the data lead-in area of the layer 0 and padding of the guard track zone of the data lead-out area is performed after padding of the drive test zone of data lead-in area and recording of the recording management zone.
Abstract translation: 根据一个实施例，从读取表面，系统导入区，数据导入区，数据区和中间区布置层0和层1的信息存储介质从 层0，并且从层1的内周布置有系统导出区域，数据导出区域，数据区域和中间区域。保护轨道区域布置在数据区域的一侧 引导区和参考代码区，R物理格式信息区，记录管理区和驱动测试区布置在数据引导区的数据导入区和数据引导区的保护轨道区的填充中， 在填充数据导入区域的驱动测试区域和记录管理区域的记录之后执行输出区域。
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Patent Agency Ranking
公开(公告)号：US20110158059A1
公开(公告)日：2011-06-30
申请号：US13045609
申请日：2011-03-11
Applicant: Kazuo Watabe , Hideo Ando , Sumitaka Maruyama , Yutaka Kashihara , Akihito Ogawa
Inventor： Kazuo Watabe , Hideo Ando , Sumitaka Maruyama , Yutaka Kashihara , Akihito Ogawa
CPC classification number: G11B7/24035 , G11B7/0079 , G11B7/1267 , G11B7/24038 , G11B20/1217 , G11B2220/235 , G11B2220/2537
Abstract: According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out area, data area, and middle area are arranged from an inner circumference of the layer 1. A guard track zone is arranged on a side of the data area in the data lead-out area, and a reference code zone, R physical format information zone, recording management zone, and drive test zone are arranged in the data lead-in area of the layer 0 and padding of the guard track zone of the data lead-out area is performed after padding of the drive test zone of data lead-in area and recording of the recording management zone.
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97.发明授权Semiconductor laser driving device, optical head, optical disk device, and semiconductor laser driving method 失效半导体激光驱动装置，光头，光盘装置和半导体激光驱动方法公开(公告)号：US07688874B2
公开(公告)日：2010-03-30
申请号：US11964329
申请日：2007-12-26
Applicant: Nobuaki Kaji , Kazuo Watabe
Inventor： Nobuaki Kaji , Kazuo Watabe
IPC: H01S3/00
CPC classification number: G11B7/126 , H01S5/06835
Abstract: A semiconductor laser driving device includes a current supply unit supplying current to a semiconductor laser; a first control unit controlling the current supply unit to supply a first current which is half or less of a lasing threshold of the semiconductor laser; and a second control unit controlling the current supply unit to supply a second current which is larger than the lasing threshold after a first time is passed from an edge of a clock signal.
Abstract translation: 一种半导体激光器驱动装置，包括向半导体激光器供电的电流源单元; 第一控制单元，控制电流供应单元以提供半导体激光器的激光阈值的一半或更小的第一电流; 以及第二控制单元，其控制电流供应单元，以在从时钟信号的边缘经过第一次之后提供大于激光阈值的第二电流。
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公开(公告)号：US20090196148A1
公开(公告)日：2009-08-06
申请号：US12362322
申请日：2009-01-29
Applicant: Keiichiro YUSU , Masahiro SAITO , Kazuto KURODA , Takashi USUI , Kazuo WATABE , Chosaku NODA , Nobuaki KAJI , Masaaki MATSUMARU , Ryosuke YAMAMOTO
Inventor： Keiichiro YUSU , Masahiro SAITO , Kazuto KURODA , Takashi USUI , Kazuo WATABE , Chosaku NODA , Nobuaki KAJI , Masaaki MATSUMARU , Ryosuke YAMAMOTO
IPC: G11B7/135
CPC classification number: G11B7/261
Abstract: According to one embodiment, the invention provides a master recording apparatus and method which can form a pit having a symmetrical pit shape with excellent reproducibility. An embodiment of the invention is a master recording apparatus where a resist film on a master for an optical disk is irradiated with irradiation light from a semiconductor laser to record information on the resist film, where the resist film is formed as an inorganic resist film, and means for outputting the irradiation light from the semiconductor laser as a short pulse laser with a pulse width between 200 ps and 1 ns is provided.
Abstract translation: 根据一个实施例，本发明提供一种主记录装置和方法，该主记录装置和方法可以形成具有良好重复性的对称凹坑形状的凹坑。 本发明的一个实施例是一种主记录装置，其中用于光盘的主机上的抗蚀剂膜用来自半导体激光器的照射光照射以将抗蚀剂膜上的信息记录在抗蚀剂膜上，其中形成抗蚀剂膜作为无机抗蚀剂膜， 并且提供用于输出来自半导体激光器的照射光作为脉冲宽度在200ps和1ns之间的短脉冲激光器的装置。
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公开(公告)号：US20090196138A1
公开(公告)日：2009-08-06
申请号：US12351226
申请日：2009-01-09
Applicant: Nobuaki Kaji , Kazuo Watabe , Takashi Usui , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Masahiro Saito
Inventor： Nobuaki Kaji , Kazuo Watabe , Takashi Usui , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Masahiro Saito
IPC: G11B7/00
CPC classification number: G11B7/00456 , G11B7/126
Abstract: According to one embodiment, in one embodiment of the invention, a laser drive circuit is provided with a first current source, a second drive current source, and a third current source. The control section selectively obtains a plurality of laser light use mode of controlling the from first to third current sources to use pulse laser light accompanying relaxation oscillation, and a complex laser light use mode of using laser light where laser pulses are combined, whose starting end has an abrupt impulse change portion caused by relaxation oscillation and whose intermediate section is a flat portion with a fixed intensity.
Abstract translation: 根据一个实施例，在本发明的一个实施例中，激光驱动电路设置有第一电流源，第二驱动电流源和第三电流源。 控制部选择性地获得多个激光使用模式，其控制从第一至第三电流源使用伴随弛豫振荡的脉冲激光，以及复合激光使用模式，其中使用激光脉冲组合的激光，其起始端 具有由松弛振动引起的突然脉冲变化部分，其中间部分是具有固定强度的平坦部分。
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100.发明申请公开(公告)号：US20090141760A1
公开(公告)日：2009-06-04
申请号：US12260824
申请日：2008-10-29
Applicant: Masahiro Saito , Takashi Usui , Kazuo Watabe , Keiichiro Yusu , Chosaku Noda , Nobuaki Kaji , Kazuto Kuroda
Inventor： Masahiro Saito , Takashi Usui , Kazuo Watabe , Keiichiro Yusu , Chosaku Noda , Nobuaki Kaji , Kazuto Kuroda
IPC: H01S3/00
CPC classification number: G11B7/1263
Abstract: According to one embodiment, a drive control apparatus of a semiconductor laser includes a driving circuit which drives the semiconductor laser by applying pulses transiting from bias current to peak current to the semiconductor laser as laser driving current that causes relaxation oscillation of emission light intensity of the semiconductor laser, and a control circuit which controls the bias current such that the bias current has a predetermined ratio limiting fluctuation of a leading peak value of the relaxation oscillation occurring for each application of pulses relative to threshold current of the semiconductor laser. The control circuit changes the bias current to maintain the predetermined ratio relative to fluctuation of the threshold current.
Abstract translation: 根据一个实施例，半导体激光器的驱动控制装置包括驱动电路，该驱动电路通过施加从偏置电流流向峰值电流的脉冲来驱动半导体激光器作为激光驱动电流，该激光驱动电流引起半导体激光器的发射光强度的弛豫振荡 半导体激光器和控制偏置电流的控制电路，使得偏置电流相对于半导体激光器的阈值电流具有针对每次施加脉冲而产生的弛豫振荡的引导峰值的预定比例限制波动。 控制电路改变偏置电流以相对于阈值电流的波动保持预定的比率。
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