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公开(公告)号：US08570845B2
公开(公告)日：2013-10-29
申请号：US13635503
申请日：2011-03-18
申请人： Hideki Nakata , Hidenori Wada , Masahito Nakao
发明人： Hideki Nakata , Hidenori Wada , Masahito Nakao
IPC分类号： G11B7/12
CPC分类号： G11B7/1381 , G11B7/0909 , G11B7/1275 , G11B7/131 , G11B7/1384 , G11B2007/0013
摘要： There are provided an optical head and an optical information device capable of downsizing the optical head, and capable of improving the qualities of a focus error signal, a tracking error signal, and a reproduction signal. A light detector (120) includes a light-receiving unit (121) for receiving a reflected light beam from an optical disc, and a package (125) for covering the light-receiving unit (121). The package (125) has a plurality of light guides (124) formed on a light-receiving surface on the light beam incident side of the light-receiving unit (121), and for guiding a reflected light beam to the light-receiving unit (121), and a light shield (114) for shielding a region except for a plurality of the light guides (124) from light.
摘要翻译： 提供了一种能够使光学头小型化并且能够提高聚焦误差信号，跟踪误差信号和再现信号的质量的光学头和光学信息装置。 光检测器（120）包括用于接收来自光盘的反射光束的光接收单元（121）和用于覆盖光接收单元（121）的封装（125）。 该封装体（125）具有形成在受光单元（121）的光束入射侧的受光面上的多个导光体（124），用于将反射光束导向光接收部 （121），以及用于屏蔽除了多个光导（124）之外的区域的光的遮光罩（114）。
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公开(公告)号：US20130010584A1
公开(公告)日：2013-01-10
申请号：US13635503
申请日：2011-03-18
申请人： Hideki Nakata , Hidenori Wada , Masahito Nakao
发明人： Hideki Nakata , Hidenori Wada , Masahito Nakao
IPC分类号： G11B7/135 , G11B7/1395 , G11B7/13 , G11B7/1374 , G11B7/1378
CPC分类号： G11B7/1381 , G11B7/0909 , G11B7/1275 , G11B7/131 , G11B7/1384 , G11B2007/0013
摘要： There are provided an optical head and an optical information device capable of downsizing the optical head, and capable of improving the qualities of a focus error signal, a tracking error signal, and a reproduction signal. A light detector (120) includes a light-receiving unit (121) for receiving a reflected light beam from an optical disc, and a package (125) for covering the light-receiving unit (121). The package (125) has a plurality of light guides (124) formed on a light-receiving surface on the light beam incident side of the light-receiving unit (121), and for guiding a reflected light beam to the light-receiving unit (121), and a light shield (114) for shielding a region except for a plurality of the light guides (124) from light.
摘要翻译： 提供了一种能够使光学头小型化并且能够提高聚焦误差信号，跟踪误差信号和再现信号的质量的光学头和光学信息装置。 光检测器（120）包括用于接收来自光盘的反射光束的光接收单元（121）和用于覆盖光接收单元（121）的封装（125）。 该封装体（125）具有形成在受光单元（121）的光束入射侧的受光面上的多个导光体（124），用于将反射光束导向光接收部 （121），以及用于屏蔽除了多个光导（124）之外的区域的光的遮光罩（114）。
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公开(公告)号：US06922384B2
公开(公告)日：2005-07-26
申请号：US09996843
申请日：2001-11-29
申请人： Harumitsu Miyashita , Junichi Minamino , Hiromichi Ishibashi , Shigeru Furumiya , Masahito Nakao
发明人： Harumitsu Miyashita , Junichi Minamino , Hiromichi Ishibashi , Shigeru Furumiya , Masahito Nakao
CPC分类号： G11B20/10111 , G11B20/10009
摘要： An apparatus for reproducing information that has been digitally recorded on a storage medium includes first and second waveform equalizers. The first waveform equalizer equalizes a read signal, corresponding to the information read out from the storage medium, thereby outputting a first equalized signal. The second waveform equalizer has an equalization characteristic different from that of the first waveform equalizer, outputs a second equalized signal and is selectively used to extract a read clock signal.
摘要翻译： 用于再现已被数字记录在存储介质上的信息的装置包括第一和第二波形均衡器。 第一波形均衡器对与从存储介质读出的信息相对应的读信号进行均衡，从而输出第一均衡信号。 第二波形均衡器具有与第一波形均衡器不同的均衡特性，输出第二均衡信号，并且选择性地用于提取读时钟信号。
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4.发明申请Optical disc apparatus, access method, program and semiconductor integrated circuit 审中-公开光盘装置，访问方式，程序和半导体集成电路公开(公告)号：US20050111316A1
公开(公告)日：2005-05-26
申请号：US10965448
申请日：2004-10-14
申请人： Masahito Nakao , Kiyokazu Hashimoto
发明人： Masahito Nakao , Kiyokazu Hashimoto
CPC分类号： G11B7/0053
摘要： An optical disc apparatus is provided for accessing an optical disc having at least one track, in which at least one prepit is provided in the at least one track. The apparatus comprises a light irradiation section for irradiating the at least one track with light, a first signal generating section for detecting light reflected from the at least one track, and based on the reflected light, generating a first signal including a prepit signal indicating the at least one prepit, a second signal generating section for removing a signal component impeding detection of the prepit signal from the first signal to generate a second signal, and a prepit detecting section for detecting the at least one prepit based on at least one of the first signal and the second signal.
摘要翻译： 提供了一种用于访问具有至少一个轨道的光盘的光盘装置，其中至少一个预凹坑设置在至少一个轨道中。 该装置包括用于用光照射至少一个轨道的光照射部分，用于检测从至少一个轨道反射的光的第一信号产生部分，并且基于反射光，产生包括指示 至少一个预凹坑，第二信号产生部分，用于去除阻止来自第一信号的预处理信号的检测以产生第二信号的信号分量;以及预凹坑检测部分，用于基于以下步骤中的至少一个来检测至少一个预凹坑： 第一信号和第二信号。
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5.发明授权公开(公告)号：US08094543B2
公开(公告)日：2012-01-10
申请号：US12634042
申请日：2009-12-09
IPC分类号： G11B7/00
CPC分类号： G11B7/1267 , G11B7/005 , G11B7/24038 , G11B7/26
摘要： An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a).
摘要翻译： 根据本发明的信息记录介质包括至少三个信息记录层。 如果从信息记录层L（n）读取信息中的激光束的读出功率被Pw（n）识别，并且如果从信息记录层L（n + a）读取信息中的激光束的读出功率 ）由Pw（n + a）识别，则信息记录层之间的基底厚度被确定为当信息记录层L（n + a）被激光束照射时具有读出功率的光的强度 当信息记录层L（n + a）被具有读出功率Pw（n + a）的激光束照射时，Pw（n）变得等于或低于光的光。
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公开(公告)号：US20070211615A1
公开(公告)日：2007-09-13
申请号：US11568232
申请日：2005-04-25
IPC分类号： G11B7/24
CPC分类号： G11B20/10009 , G11B7/00745 , G11B7/24079 , G11B7/24082
摘要： An information storage medium 100 according to the present invention includes a track 10 that wobbles in a predetermined period and a plurality of pre-pits 21 and 22, which are arranged adjacent to the track. The track has a plurality of frame units 11 and 12. At least one of the pre-pits 21 and 22 is allocated to each of the frame units 11 and 12. Each of the frame units 11 and 12 has a first wobble shape 111, of which the falling portion is sloped more steeply than its rising portion, and/or a second wobble shape 112, of which the rising portion is sloped more steeply than its falling portion. The first wobble shape 111 represents a first type of information and the second wobble shape 112 represents a second type of information. The first and second types of information are different from each other.
摘要翻译： 根据本发明的信息存储介质100包括在预定周期中摆动的轨道10和与轨迹相邻布置的多个预凹坑21和22。 轨道具有多个帧单元11和12。 预定凹坑21和22中的至少一个被分配给每个帧单元11和12。 每个框架单元11和12具有第一摆动形状111，其下降部分比其上升部分更陡峭地倾斜，和/或第二摆动形状112，其上升部分比其下降更陡峭地倾斜 一部分。 第一摆动形状111表示第一类型的信息，第二摆动形状112表示第二类型的信息。 第一种和第二类信息彼此不同。
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公开(公告)号：US08144563B2
公开(公告)日：2012-03-27
申请号：US12936939
申请日：2009-12-03
CPC分类号： G11B7/005 , G11B7/00736 , G11B7/1267 , G11B7/24038 , G11B2007/0013
摘要： An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a).
摘要翻译： 根据本发明的信息记录介质包括至少三个信息记录层。 如果从信息记录层L（n）读取信息中的激光束的读出功率被Pw（n）识别，并且如果从信息记录层L（n + a）读取信息中的激光束的读出功率 ）由Pw（n + a）识别，则信息记录层之间的基底厚度被确定为当信息记录层L（n + a）被激光束照射时具有读出功率的光的强度 当信息记录层L（n + a）被具有读出功率Pw（n + a）的激光束照射时，Pw（n）变得等于或低于光的光。
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公开(公告)号：US20110032805A1
公开(公告)日：2011-02-10
申请号：US12936939
申请日：2009-12-03
CPC分类号： G11B7/005 , G11B7/00736 , G11B7/1267 , G11B7/24038 , G11B2007/0013
摘要： An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a).
摘要翻译： 根据本发明的信息记录介质包括至少三个信息记录层。 如果从信息记录层L（n）读取信息中的激光束的读出功率被Pw（n）识别，并且如果从信息记录层L（n + a）读取信息中的激光束的读出功率 ）由Pw（n + a）识别，则信息记录层之间的基底厚度被确定为当信息记录层L（n + a）被激光束照射时具有读出功率的光的强度 当信息记录层L（n + a）被具有读出功率Pw（n + a）的激光束照射时，Pw（n）变得等于或低于光的光。
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9.发明申请公开(公告)号：US20100208563A1
公开(公告)日：2010-08-19
申请号：US12634042
申请日：2009-12-09
CPC分类号： G11B7/1267 , G11B7/005 , G11B7/24038 , G11B7/26
摘要： An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a).
摘要翻译： 根据本发明的信息记录介质包括至少三个信息记录层。 如果从信息记录层L（n）读取信息中的激光束的读出功率被Pw（n）识别，并且如果从信息记录层L（n + a）读取信息中的激光束的读出功率 ）由Pw（n + a）识别，则信息记录层之间的基底厚度被确定为当信息记录层L（n + a）被激光束照射时具有读出功率的光的强度 当信息记录层L（n + a）被具有读出功率Pw（n + a）的激光束照射时，Pw（n）变得等于或低于光的光。
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10.发明授权Method and apparatus for reading address information from an optical disc medium 失效从光盘介质读取地址信息的方法和装置公开(公告)号：US07376056B2
公开(公告)日：2008-05-20
申请号：US10346856
申请日：2003-01-17
IPC分类号： G11B7/00
CPC分类号： G11B27/24 , G11B7/005 , G11B7/007 , G11B2220/216 , G11B2220/218 , G11B2220/2529 , G11B2220/2545 , G11B2220/2562 , G11B2220/2575
摘要： A method for reading address information from an optical disc with a wobbled track groove includes the steps of: obtaining a sine wave address signal, a first address signal representing a first groove region with sine wave wobbled portions and an inverted phase portion, and a second address signal representing a second groove region with steep inward or outward displacements; multiplying a first reference signal, being phase-locked to, and having the same frequency as, the sine wave address signal, and the first address signal together to obtain a first multiplied signal; multiplying a second reference signal, being phase-locked to, and having a frequency twice as high as, the sine wave address signal, and the second address signal together to obtain a second multiplied signal; integrating the first, multiplied signal and the second multiplied signal separately to obtain a first integral and a second integral, respectively; and adding the first and second integrals together.
摘要翻译： 一种用于从具有摆动轨迹槽的光盘读取地址信息的方法包括以下步骤：获得正弦波地址信号，表示具有正弦波摆动部分和反相部分的第一沟槽区域的第一地址信号，以及第二 地址信号表示具有陡峭的向内或向外位移的第二沟槽区域; 将正弦波地址信号和第一地址信号相位锁定并具有与频率相同的第一参考信号，以获得第一相乘信号; 将正弦波地址信号和第二地址信号的频率两倍的频率的第二参考信号相乘并获得第二相乘信号; 分别对第一乘法信号和第二乘法信号进行积分以分别获得第一积分和第二积分; 并将第一和第二积分相加。
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