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51. 发明公开

EP1729293A2 Optical disc medium and optical disc device 审中-公开
标题翻译： Optisches Plattenmedium und optische Plattenvorrichtung
公开(公告)号：EP1729293A2
公开(公告)日：2006-12-06
申请号：EP06010502.0
申请日：2006-05-22
申请人： NEC Corporation
发明人： Yamanaka, Yutaka
IPC分类号： G11B7/007 , G11B7/24
CPC分类号： G11B7/00736 , G11B7/08511 , G11B7/24038 , G11B2007/0013
摘要： Areas, which are located on the inner peripheral sides of multi-layered information recording areas (20) and have the same radial ranges, are set as burst cutting area forming zones, and a burst cutting area (BCA) (101) is formed in one information recording layer. All of the same radial ranges of the other information recording layers are formed as mirror surfaces (5). Thereby, interference from other layers and scattering of readout light are prevented, so reading of the burst cutting area (BCA) is realized stably.
摘要翻译：位于多层信息记录区域（20）的内周侧并且具有相同径向范围的区域被设置为突发切割区域形成区域，并且形成突发切割区域（BCA）（101）一个信息记录层。其他信息记录层的所有相同的径向范围形成为镜面（5）。由此，防止来自其他层的干扰和读出光的散射，从而稳定地实现了突发切割区域（BCA）的读取。

52. 发明授权

EP0845776B1 Spot position-discriminating system and method for discriminating spot position 失效
标题翻译：系统和方法，用于确定光点的位置
公开(公告)号：EP0845776B1
公开(公告)日：2004-04-07
申请号：EP97120848.3
申请日：1997-11-27
申请人： NEC CORPORATION
发明人： Yamanaka, Yutaka
IPC分类号： G11B7/085 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/00718 , G11B7/08517 , G11B7/0943

53. 发明公开

EP0845776A1 Spot position-discriminating system and method for discriminating spot position 失效
标题翻译：系统和Verfahren zur Bestimmung der Position eines Strahlungsflecks
公开(公告)号：EP0845776A1
公开(公告)日：1998-06-03
申请号：EP97120848.3
申请日：1997-11-27
申请人： NEC CORPORATION
发明人： Yamanaka, Yutaka
IPC分类号： G11B7/085 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/00718 , G11B7/08517 , G11B7/0943
摘要： It is an objection of the invention to provide a rewritable optical disk system, which can discriminate the position of a spot on an optical disk by detecting the difference in a intensity distribution of a reflected light from the optical disk between a land track and a groove track. The spot positions detected by partially detecting the intensity distribution of the reflected light in a condition that the spot on the optical disk is lightly defocused, and thereby the difference in the intensity distribution of a reflected light between the land and groove tracks can be discriminated.
摘要翻译：本发明的目的是提供一种可重写光盘系统，其可以通过检测在光阑轨道和凹槽之间的来自光盘的反射光的强度分布的差异来区分光盘上的斑点的位置跟踪。通过在光盘上的光斑轻微散焦的状态下部分地检测反射光的强度分布而检测到的光斑位置，从而可以区分纹间和纹道之间的反射光的强度分布的差异。

54. 发明授权

EP0547624B1 Magneto-optical head system 失效
标题翻译：系统磁光头
公开(公告)号：EP0547624B1
公开(公告)日：1997-11-12
申请号：EP92121587.7
申请日：1992-12-18
申请人： NEC CORPORATION
发明人： Katayama, Ryuichi , Yamanaka, Yutaka
IPC分类号： G11B11/10 , G11B7/13 , G11B7/135
CPC分类号： G11B7/131 , G11B7/1353 , G11B11/10543 , G11B11/10576

55. 发明公开

EP0789356A1 Optical head device responsive to various optical disks 失效
标题翻译：五花八门che che。。。。。。。。。。。。。。。。。。。
公开(公告)号：EP0789356A1
公开(公告)日：1997-08-13
申请号：EP97101917.9
申请日：1997-02-06
申请人： NEC CORPORATION
发明人： Yamanaka, Yutaka
IPC分类号： G11B7/135 , G11B7/12
CPC分类号： G11B7/1395 , G11B7/0935 , G11B7/1356 , G11B7/1367 , G11B7/1372 , G11B2007/0006 , G11B2007/13727
摘要： The present invention provides an optical head device comprising : a light source for emitting a laser beam ; a polarization beam spritter for receiving the laser beam and dividing first and second linearly polarized beams having first and second polarization directions which are vertical to each other ; an optical transmission system for receiving the first and second polarized beams and respectively transmitting the first and second linearly polarized beams along first and second optical paths which are parallel to each other ; a quarter wavelength plate for receiving the first and second linearly polarized beams and converting the first and second linearly polarized beams into first and second circulatory polarized beams having polarization planes rotating in first and second directions opposite to each other ; and a pair of first and second objective lenses provided for receiving the first and second circulatory polarized beams respectively, the first and second objective lenses having first and second focal lengths which are different from each other, so that any one of the first and second circulatory polarized beams is focused on an optical disk surface and then the first and second circulatory polarized beams are reflected by the optical disk surface and subsequently transmitted through the first and second objective lenses to the quarter wavelength plate whereby the first and second circulatory polarized beams are respectively converted into third and fourth linearly polarized beams having the second and first polarization directions respectively before the third and fourth linearly polarized beams are transmitted through the optical transmission system to the polarization beam spritter whereby the third and fourth linearly polarized beams are transmitted along a common optical path to a single optical detecting system.
摘要翻译：本发明提供了一种光学头装置，包括：用于发射激光束的光源; 用于接收激光束并且分割具有彼此垂直的第一和第二偏振方向的第一和第二线性偏振光束的偏振光束喷嘴; 光传输系统，用于接收第一和第二偏振光束，并且沿着彼此平行的第一和第二光路分别透射第一和第二线偏振光束; 四分之一波长板，用于接收第一和第二线偏振光束，并将第一和第二线偏振光束转换成具有在彼此相反的第一和第二方向上旋转的偏振面的第一和第二循环偏振光束; 以及分别用于接收第一和第二循环偏振光束的一对第一和第二物镜，第一和第二物镜具有彼此不同的第一和第二焦距，使得第一和第二循环中的任何一个偏振光束聚焦在光盘表面上，然后第一和第二循环偏振光束被光盘表面反射，随后通过第一和第二物镜透射到四分之一波长板，由此第一和第二循环偏振光束分别在第三和第四线偏振光束通过光传输系统传输到偏振光束偏振器之前，分别转换成具有第二和第一偏振方向的第三和第四线偏振光束，由此第三和第四线偏振光束沿着公共光路径单个光学检测系统。

56. 发明授权

EP0323845B1 An apparatus for rotating a light image and an optical system for focusing light beams on a recording medium 失效
标题翻译：设备，用于光束聚焦在记录介质上旋转光图像和光学系统。
公开(公告)号：EP0323845B1
公开(公告)日：1994-08-03
申请号：EP89100155.4
申请日：1989-01-05
申请人： NEC CORPORATION
发明人： Yamanaka, Yutaka
IPC分类号： G02B17/02 , G11B7/135 , G02B5/04 , G11B7/09 , G11B7/14 , G06K15/12
CPC分类号： G11B7/14 , G02B17/02 , G11B7/0025 , G11B7/1359 , G11B2007/13727

57. 发明公开

EP0393719A2 Signal reproducing apparatus for optical recording and reproducing equipment and method for the same 失效
标题翻译： Signalwiedergabegerätfüroptische Aufzeichnungs- und Wiedergabeapparatur und Methodefürdasselbe。
公开(公告)号：EP0393719A2
公开(公告)日：1990-10-24
申请号：EP90107616.6
申请日：1990-04-23
申请人： NEC CORPORATION
发明人： Hirose, Yutaka , Yamanaka, Yutaka , Okanoue, Kazuhiro
IPC分类号： G11B7/00
CPC分类号： G11B7/13 , G11B7/005 , G11B7/14 , G11B11/10515 , G11B11/10543 , G11B11/10595
摘要： The apparatus and method is used for recording optical information on an optical disk and reproducing the optical information therefrom by the use of an optical beam. The system is especially adapted to eliminate crosstalk from nearby tracks even when the position of the beam spot fluctuates with respect to a desired track and even when the size of a beam spot incident to the desired track is varied. The apparatus particularly comprises a frequency characteristic converter which receives output signals from a photodetector array (11). The photodetector array (11), for example, comprises 3 photodetectors (100, 101, 102) receiving input beams (130, 131 and 132). The photodetector (100) is associated with a desired track for reproducing a signal, whereas photodetectors (101, 102) are associated with neighbouring tracks for reproducing a replica of crosstalk. The frequency characteristic convertor (12) further comprises transversal filter means (110, 111, 112), each capable of controlling a frequency characteristic, an adder (120), a reference signal generator (121), an error detector (122), a filter control circuit (123) for controlling the filters (110, 111, 112), a timing control circuit (124), a decision circuit (125), a switch (126) and an output terminal (133). The output of the photodetector (100) adapted to reproduce a signal is fed to the timing control circuit (124), which detects the beginning of a preamble signal written in the track beforehand and delivers a control signal to the reference signal generator (121) and switch (126). When the timing control circuit (124) detects the end of the preamble signal, it delivers a control signal to the reference signal generator (121) and switch (126). The characteristic control for the transversal filters (110, 111, 112) is sequentially performed on the basis of the preamble signal and the corresponding reference signal and on the basis of an input signal and an output signal of the decision circuit (125).
摘要翻译：该装置和方法用于在光盘上记录光学信息，并通过使用光束再现光学信息。该系统特别适用于消除来自附近轨道的串音，即使当光束点的位置相对于期望的轨迹波动时，甚至当入射到期望的轨道的光束点的尺寸是变化时也是如此。该装置特别地包括频率特性转换器，其接收来自光电检测器阵列（11）的输出信号。例如，光电检测器阵列（11）包括接收输入光束（130,131和132）的3个光电检测器（100,101,102）。光电检测器（100）与用于再现信号的期望轨道相关联，而光电检测器（101,102）与相邻轨道相关联，以再现串扰副本。频率特性转换器（12）还包括横向滤波器装置（110,111,112），每个能够控制频率特性，加法器（120），参考信号发生器（121），误差检测器（122），滤波器控制电路（123），用于控制滤波器（110,111,112），定时控制电路（124），判定电路（125），开关（126）和输出端子（133）。适于再现信号的光电检测器（100）的输出被馈送到定时控制电路（124），该定时控制电路检测预先写入轨道中的前导信号的开始，并将控制信号传送给参考信号发生器（121）和开关（126）。当定时控制电路（124）检测到前导码信号的结束时，它将控制信号传送到参考信号发生器（121）和开关（126）。基于前导码信号和相应的参考信号，并且基于判决电路（125）的输入信号和输出信号，依次执行横向滤波器（110,111,112）的特性控制。

58. 发明公开

EP0323845A2 An apparatus for rotating a light image and an optical system for focusing light beams on a recording medium 失效
标题翻译：设备，用于光束聚焦在记录介质上旋转光图像和光学系统。
公开(公告)号：EP0323845A2
公开(公告)日：1989-07-12
申请号：EP89100155.4
申请日：1989-01-05
申请人： NEC CORPORATION
发明人： Yamanaka, Yutaka
IPC分类号： G02B17/02 , G11B7/135 , G02B5/04 , G11B7/09 , G11B7/14 , G06K15/12
CPC分类号： G11B7/14 , G02B17/02 , G11B7/0025 , G11B7/1359 , G11B2007/13727
摘要： An apparatus for rotating a light image comprises an optical medium such as a Dove prism, an assembly of three mirrors, a triangle prism etc., and a unit (24) for rotating the optical medium. The optical medium is provided with n reflection planes in number each having a normal included in a predetermined plane including a reference light axis, where n is an odd number (n = 1, 3, 5 ...). When an incident light beam parallel to the reference light axis is supplied to the optical medium, an output light beam having a predetermined rotating angle relative to the incident light beam is obtained by rotating the optical medium around a line parallel to the reference light axis. An optical system for focusing a light image further comprises a light source (21) for radiating a plurality of light beams, and a focusing lens (25) for focusing the light beams on a recording medium (27) such as an optical disk, a photosensitive drum etc. The optical medium is positioned between the light (21) and the focusing lens (25), so that a line connecting beam spots formed on the recording medium (27) by focusing the lgiht beams is rotated by rotating the optical medium.
摘要翻译：光学介质的用于旋转光图像的设备包括：诸如威棱镜，向的三个反射镜，一个三角形棱镜等组件，以及用于该光学介质旋转的单元（24）。将该光学介质在数设置有N个反射面的每个具有包含在一个平面中包括预定参考光轴，其中n是奇数的正（n = 1，3，5 ...）。当入射平行于基准光轴光束被提供给光学介质，以输出光束具有规定的旋转相对于所述入射光束角度由围绕平行的线的光学介质旋转到参考光轴线获得。用于聚焦光图像另外的光学系统包括：用于辐射光束的多个光源（21），和一个聚焦透镜（25），用于聚焦在记录介质（27）上的光束：如光盘上时，一个感光鼓等的光学介质的光（21）和所述聚焦透镜（25）之间的定位，所以没有通过聚焦lgiht梁连接形成在记录介质（27）上电子束点的线通过所述光学介质旋转旋转了，

59. 发明授权

EP1548715B1 Optical disk medium, and apparatus and method for recording data on the same 有权
标题翻译：一种光学记录介质，和装置和方法用于将数据记录在这种培养基上
公开(公告)号：EP1548715B1
公开(公告)日：2012-02-15
申请号：EP04030727.4
申请日：2004-12-23
申请人： NEC Corporation
发明人： Yamanaka, Yutaka
IPC分类号： G11B7/007
CPC分类号： G11B7/1267 , G11B7/00736

60. 发明公开

EP1548715A3 Optical disk medium, and apparatus and method for recording data on the same 有权
标题翻译：一种光学记录介质，和装置和方法用于将数据记录在这种培养基上
公开(公告)号：EP1548715A3
公开(公告)日：2010-04-28
申请号：EP04030727.4
申请日：2004-12-23
申请人： NEC CORPORATION
发明人： Yamanaka, Yutaka
IPC分类号： G11B7/007
CPC分类号： G11B7/1267 , G11B7/00736
摘要： An optical disc medium includes a system area and a data area. The system area includes a recording operation test area (26) to which a trial recording operation is carried out to determine an optimal record condition when data is recorded in the data area; a record control data area (27) where data necessary to record user data on the data area is recorded; and a user data lead-in area (28) necessary to reproduce the user data from the optical disc medium. Dummy data are recorded to a portion (27e) of the record control data area (27) on a side of the user data lead-in area (28) to prevent a track-out when the data area is accessed.

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