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71. 发明申请

US20090116350A1 INFORMATION RECORDING APPARATUS AND METHOD AND COMPUTER PROGRAM 有权
标题翻译：信息记录装置和方法与计算机程序
公开(公告)号：US20090116350A1
公开(公告)日：2009-05-07
申请号：US12064823
申请日：2006-08-16
申请人： Naoharu Yanagawa , Akira Shirota
发明人： Naoharu Yanagawa , Akira Shirota
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/00456 , G11B7/00736
摘要： An information recording apparatus (1) comprises a recording means (501) that irradiates a laser beam (LB) having a predetermined power, thereby recording information onto an information recording medium (100); an adding means (550) that adds a weighting to at least one of a plurality of reproduction characteristics related to the information to be recorded; and a control means (504,550) that controls the recording means to record the information by use of a power at which the at least one reproduction characteristic to which the weighting has been added satisfies a predetermined first criterion.
摘要翻译：信息记录装置（1）包括：照射具有预定功率的激光束（LB）的记录装置（501），从而将信息记录到信息记录介质（100）上; 添加装置（550），其对与要记录的信息相关的多个再现特性中的至少一个进行加权; 以及控制装置（504,550），其控制记录装置通过使用已经添加了加权的至少一个再现特性满足预定的第一标准的功率来记录信息。

72. 发明申请

US20070247997A1 Optical Pickup Device, and Information Recording and Reproduction Device 失效
标题翻译：光学拾取装置和信息记录和再现装置
公开(公告)号：US20070247997A1
公开(公告)日：2007-10-25
申请号：US11660540
申请日：2005-08-12
申请人： Naoharu Yanagawa , Fumihiko Sano
发明人： Naoharu Yanagawa , Fumihiko Sano
IPC分类号： G11B7/09
CPC分类号： G11B7/0045 , G11B7/09 , G11B7/0925 , G11B7/1275 , G11B7/1381
摘要： A sufficient S/N ratio in reproduction of an optical disk is achieved without complexing a circuit structure even if a data recording speed relative to the optical disk is increased. When data is recorded into an optical disk, in an information recording and reproduction device, both a first light beam and a second light beam are emitted at the same time. A sub-actuator section is provided in addition to a main actuator for correcting the displacement of light collecting spots caused by the displacement between the optical axis of the first beam and the optical axis of the second beam. Only the optical axis of the second light beam is adjusted by the sub-actuator section.
摘要翻译：即使相对于光盘的数据记录速度增加，也不会使电路结构复杂化，从而实现光盘再现时的足够的S / N比。当将数据记录到光盘中时，在信息记录和再现装置中，同时发射第一光束和第二光束。除了用于校正由第一光束的光轴与第二光束的光轴之间的位移引起的聚光斑的位移的主致动器之外，还设置有副致动器部。只有第二光束的光轴被副致动器部分调节。

73. 发明申请

US20060120232A1 Information recording medium and information recording device 审中-公开
标题翻译：信息记录介质和信息记录装置
公开(公告)号：US20060120232A1
公开(公告)日：2006-06-08
申请号：US10542853
申请日：2003-12-25
申请人： Naoharu Yanagawa , Tatsuhiro Yone , Masahiro Kato , Akira Shirota , Kunihiko Horikawa , Eiji Muramatsu
发明人： Naoharu Yanagawa , Tatsuhiro Yone , Masahiro Kato , Akira Shirota , Kunihiko Horikawa , Eiji Muramatsu
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/00736 , G11B7/00745 , G11B7/0901 , G11B7/094 , G11B7/24085
摘要： A tracking servo control device for making a tracking servo control to apply a light beam onto a groove track on a recording medium where the groove track and a pre-pit are preformed, is provided with: a first generation device which generates a first regenerative signal based on a reflected light from the recording medium when at least a part of the pre-pit is formed within a radiation range of the light beam onto the groove track; a second generation device which generates a second regenerative signal based on a reflected light from the recording medium when the pre-pit is formed outside the radiation range of the light beam; and a calculation device which calculates an offset value in the tracking servo control based on the first regenerative signal and the second regenerative signal that are generated.
摘要翻译：一种用于进行跟踪伺服控制的跟踪伺服控制装置设置有：第一生成装置，其产生第一再生信号，所述跟踪伺服控制装置用于进行跟踪伺服控制，以将光束施加到预定凹槽轨道和预凹坑的记录介质上的凹槽轨道上当所述光束的至少一部分在所述凹槽轨道的辐射范围内形成时，基于来自所述记录介质的反射光; 第二代装置，当预制坑形成在光束的辐射范围之外时，基于来自记录介质的反射光产生第二再生信号; 以及计算装置，其基于所生成的第一再生信号和第二再生信号，计算跟踪伺服控制中的偏移值。

74. 发明申请

US20050237884A1 Information recording apparatus and method, and computer program product 审中-公开
标题翻译：信息记录装置和方法，以及计算机程序产品
公开(公告)号：US20050237884A1
公开(公告)日：2005-10-27
申请号：US11081520
申请日：2005-03-17
申请人： Naoharu Yanagawa
发明人： Naoharu Yanagawa
IPC分类号： G11B20/10 , G11B7/00 , G11B7/0045 , G11B7/007 , G11B7/125 , G11B7/1263
CPC分类号： G11B7/1263 , G11B7/00456 , G11B7/00736
摘要： An recording apparatus is provided with: an recording device for recording information onto an recording medium by irradiating laser light; and a measuring device for measuring reproduction quality of the information recorded in a area adjacent to the information to be additionally recorded. The information recording device additionally records the record information into a link area, which is next to the recording area adjacent to the record information to be additionally recorded, with a record parameter on which the reproduction quality measured by the first measuring device is obtained, if the record information is additionally recorded into the link area.
摘要翻译：一种记录装置具有：记录装置，用于通过照射激光将信息记录到记录介质上; 以及用于测量记录在与要附加记录的信息相邻的区域中的信息的再现质量的测量装置。信息记录装置将记录信息另外将记录信息记录到与要附加记录的记录信息相邻的记录区域旁边的链接区域中，其中获得由第一测量装置测量的再现质量的记录参数，如果记录信息被附加地记录在链接区域中。

75. 发明授权

US06954418B2 APPARATUS FOR ADJUSTING SIGNAL LEVELS DERIVED FROM AN OPTICAL DISC TO BECOME EQUAL TO A REFERENCE LEVEL DETERMINED FROM AT LEAST ONE OF THE SIGNAL LEVELS OF THE SIGNALS AND FOR SYNTHESIZING THE SIGNALS 有权
标题翻译：用于调整从光盘衍生的信号水平的装置将其等同于从信号的信号水平和信号合成中的至少一个确定的参考水平
公开(公告)号：US06954418B2
公开(公告)日：2005-10-11
申请号：US10067539
申请日：2002-02-07
申请人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
发明人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
IPC分类号： G11B7/005 , G11B7/09 , G11B7/00
CPC分类号： G11B7/0943 , G11B7/0941
摘要： A plurality of light receiving detectors receive a plurality of segments of a beam returning from an optical disc when a reading beam of light is radiated to the optical disc. An optical pickup assembly produces a plurality of signals from the beam segments in accordance with, for instance, optical intensities of the beam segments. A level adjusting circuit adjusts signal levels of these signals such that each of the signal levels of the signals becomes equal to a reference level. The reference level is determined from at least one of the signal levels of the received beam segments.
摘要翻译：当读取光束被辐射到光盘时，多个光接收检测器接收从光盘返回的光束的多个段。光拾取器组件根据例如光束段的光强度从光束段产生多个信号。电平调整电路调节这些信号的信号电平，使得信号的每个信号电平等于参考电平。参考电平由接收的光束段的信号电平中的至少一个确定。

76. 发明申请

US20050094535A1 Optical recording device and aberration correction method 有权
标题翻译：光学记录装置和像差校正方法
公开(公告)号：US20050094535A1
公开(公告)日：2005-05-05
申请号：US10973425
申请日：2004-10-27
申请人： Naoharu Yanagawa
发明人： Naoharu Yanagawa
IPC分类号： G11B7/0045 , G11B7/125 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1369 , G11B7/1267 , G11B7/13925
摘要： An optical recording device includes an optical pickup, an asymmetry detection circuit, and a microcomputer. The optical pickup corrects an aberration of an object lens based on an aberration correction value using a liquid crystal panel in the optical pickup, irradiates a laser beam of multiple stages of recording powers on an optical disk to form marks, and then reproduces the formed marks with a reproduction power. The asymmetry detection circuit detects amplitudes of RF signals of the marks reproduced by the optical pickup, calculates amplitude central values such that asymmetry takes a predetermined value, and determines an optimum recording power. The microcomputer performs spherical aberration correction to change a spherical aberration correction value from an initial value such that the optimum recording power takes a minimum value.
摘要翻译：光学记录装置包括光学拾取器，不对称检测电路和微计算机。光学拾取器基于使用光学拾取器中的液晶面板的像差校正值来校正物镜的像差，将多级记录功率的激光束照射在光盘上以形成标记，然后再现形成的标记具有再生能力。不对称检测电路检测由光学拾取器再现的标记的RF信号的幅度，计算不对称性取预定值的幅度中心值，并确定最佳记录功率。微型计算机进行球面像差校正，以从初始值改变球面像差校正值，使得最佳记录功率达到最小值。

77. 发明授权

US06731662B2 Laser light intensity controller 失效
标题翻译：激光强度控制器
公开(公告)号：US06731662B2
公开(公告)日：2004-05-04
申请号：US09968907
申请日：2001-10-03
申请人： Naoharu Yanagawa , Fumihiko Sano
发明人： Naoharu Yanagawa , Fumihiko Sano
IPC分类号： H01S313
CPC分类号： G11B7/126 , G11B7/1356
摘要： A laser light intensity controller includes a polarizing beam splitter for passing most of one of an x-direction polarization component perpendicular to a direction in which a laser beam emitted from a light source travels and a y-direction polarization component parallel with the traveling direction and for reflecting a little portion of the one polarization component as monitoring light, and a photodetector for receiving the reflected monitoring light to generate a light intensity signal. The controller drives the light source in accordance with the light intensity signal. The photodetector reflects the other of the x-direction polarization component and the y-direction polarization component and is not sensitive thereto, and absorbs the one polarization component and is sensitive thereto.
摘要翻译：激光强度控制器包括偏振分束器，用于使垂直于从光源发射的激光束行进的方向的x方向偏振分量和与行进方向平行的y方向偏振分量的大部分方向传播，用于反射一个偏振分量的一部分作为监测光;以及光电检测器，用于接收反射的监测光以产生光强度信号。控制器根据光强度信号驱动光源。光检测器反射x方向偏振分量和y方向偏振分量中的另一个，并且对其不敏感，并且吸收一个偏振分量并且对其敏感。

78. 发明授权

US06363038B1 Optical pickup device minimizing an undesirable astigmatism 失效
标题翻译：光学拾取装置使不希望的散光最小化
公开(公告)号：US06363038B1
公开(公告)日：2002-03-26
申请号：US09412703
申请日：1999-10-05
申请人： Naoharu Yanagawa
发明人： Naoharu Yanagawa
IPC分类号： G11B700
CPC分类号： G11B7/0956 , G11B7/0909
摘要： An optical pickup device comprises an objective lens unit having an objective lens, a support member for supporting the objective lens and an objective-lens driving mechanism for driving the objective lens in a radial direction and a focusing direction of an optical disc in such a way that a light beam is focused on an information recording surface of the optical disc; and a main unit having an optical irradiation system which includes a light source for emitting a light beam and guides the light beam to the objective lens, and an optical detection system which includes a photo-sensor and guides reflected light from the information recording surface to the photo-sensor via the objective lens. The optical pickup apparatus further has a tilt-position-adjusting mechanism for supporting the objective lens unit on the main unit and tilting an optical axis of the objective lens with respect to an optical axis of the optical irradiation system in such a way as to minimize an undesirable astigmatism given by the optical disc and optical elements in the optical irradiation system and the optical detection system.
摘要翻译：一种光学拾取装置，包括具有物镜的物镜单元，用于支撑物镜的支撑构件和用于沿径向驱动物镜的物镜驱动机构和光盘的聚焦方向光束聚焦在光盘的信息记录表面上; 以及具有光照射系统的主单元，该光照射系统包括用于发射光束并将光束引导到物镜的光源，以及光学检测系统，其包括光传感器并将来自信息记录表面的反射光引导到光传感器通过物镜。光学拾取装置还具有用于将物镜单元支撑在主单元上的倾斜位置调节机构，并且以相对于光照射系统的光轴倾斜物镜的光轴的方式使得最小化在光照射系统和光学检测系统中由光盘和光学元件给出的不希望的散光。

79. 发明授权

US06327237B2 Optical pickup for recording or reproducing system 失效
公开(公告)号：US06327237B2
公开(公告)日：2001-12-04
申请号：US09854688
申请日：2001-05-15
申请人： Naoharu Yanagawa , Eiji Muramatsu
发明人： Naoharu Yanagawa , Eiji Muramatsu
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/1356 , G11B7/1365 , G11B7/1398
摘要： A light source is provided for emitting a first beam having a far-field pattern of an elliptic shape. The first beam is a linearly polarized light having a first polarizing direction in a major axis of the elliptic shape. A half-wave plate is provided for rotating the polarizing direction of the first beam 90 degrees, thereby changing the first beam to a second beam. A beam splitter is provided for changing the elliptic shape of the second beam into a circular shape. The beam splitter is arranged to transmit the second beam and to reflect a third beam having a polarizing direction different from that of the second beam by 90 degrees. A quarter-wave plate is provided for transmitting the second beam from the beam splitter to apply it to an optical disc, and for changing the second beam reflected from the optical disc into the third beam. The third beam reflected from the beam splitter is applied to a photodetector.

80. 发明授权

US5726961A Optical pickup control system for optical discs having different reflectivities 失效
标题翻译：具有不同反射率的光盘的光学拾取控制系统
公开(公告)号：US5726961A
公开(公告)日：1998-03-10
申请号：US819487
申请日：1997-03-17
申请人： Naoharu Yanagawa
发明人： Naoharu Yanagawa
IPC分类号： G02B27/10 , G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/125 , G11B7/135
CPC分类号： G11B7/126 , G11B7/1369 , G11B7/1381 , G11B2007/13727
摘要： An optical pickup control system is provided for recording and reproducing information on various types of discs which have different reflectivities of light. The pickup has a semiconductor laser radiating a laser beam, and a photodetector detecting reflected light from the disc for controlling tracking and focusing of the beam. An automatic laser power control device is provided for controlling the power of the laser beam from the semiconductor laser such that the detected lights by the photodetector become a predetermined value.
摘要翻译：提供一种光拾取控制系统，用于记录和再现具有不同反射率的各种类型的光盘的信息。拾取器具有照射激光束的半导体激光器和检测来自盘的反射光的光电检测器，用于控制光束的跟踪和聚焦。提供了一种自动激光功率控制装置，用于控制来自半导体激光器的激光束的功率，使得由光电检测器检测的光线变为预定值。

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