公开(公告)号：US07002890B2

公开(公告)日：2006-02-21

申请号：US09823852

申请日：2001-03-29

申请人： Naoyasu Miyagawa ,  Masud Mansuripur

发明人： Naoyasu Miyagawa ,  Masud Mansuripur

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/0062 ,  G11B7/007 ,  G11B7/013 ,  G11B7/24088 ,  G11B11/10595 ,  G11B20/02

摘要： A method of recording data on a recording medium includes mapping the data to a set of write symbols wherein each write symbol represents more than one bit of the data. The set of write symbols is defined by defining a set of variable write parameters; generating a plurality of candidate write symbols that specify different values for the variable write parameters; generating a plurality of readout waveforms produced by the plurality of candidate write symbols; analyzing the readout waveforms to determine desired set of readout waveforms; and selecting selected ones of the plurality of candidate write symbols that correspond to the desired readout waveforms to be included in the set of write symbols. The data is written to the medium using the write symbols.

摘要翻译： 在记录介质上记录数据的方法包括将数据映射到一组写符号，其中每个写符号表示数据的多于一位。 通过定义一组可变写参数来定义写符号集; 生成为所述可变写参数指定不同值的多个候选写符号; 产生由多个候选写符号产生的多个读出波形; 分析读出波形以确定期望的读出波形组; 以及选择与要包括在所述写入符号集合中的期望读出波形相对应的所述多个候选写符号中的所选择的一个。 使用写入符号将数据写入介质。

公开(公告)号：US20060023588A1

公开(公告)日：2006-02-02

申请号：US11204965

申请日：2005-08-16

申请人： Naoyasu Miyagawa ,  Kenichi Nishiuchi

发明人： Naoyasu Miyagawa ,  Kenichi Nishiuchi

IPC分类号： G11B7/24 ,  G11B5/09

CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/007 ,  G11B2007/0013

摘要： A plurality of types of recording pulse control rules for which the recording pulse waveform is determined according to the information signals to be recorded are stored in advance in an optical disk. When recording to the optical disk, information is recorded using a recording pulse where, due to the focused laser beam, the temperature in the recording layer cools more rapidly at a second information recording layer closer to the side where light is incident than at a first information recording layer farther away from the side where light is incident.

公开(公告)号：US20050195731A1

公开(公告)日：2005-09-08

申请号：US11068752

申请日：2005-03-02

申请人： Tetsuya Akiyama ,  Naoyasu Miyagawa ,  Shinya Abe ,  Takashi Ishida

发明人： Tetsuya Akiyama ,  Naoyasu Miyagawa ,  Shinya Abe ,  Takashi Ishida

IPC分类号： G11B7/005 ,  G11B7/007 ,  G11B7/24 ,  G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/0053

摘要： An optical recording medium is disclosed that allows information to be recorded and played back properly, even when a type of recording medium in which information is recorded to grooves is used along with a type of recording medium in which information is recorded to lands, as well as a method for recording and playback with this medium. Recording track information is recorded in advance, indicating whether information is to be recorded in the grooves or the lands, whichever of the grooves and lands is best suited to the recording of information is selected on the basis of the recording track information that is read out, and the recording or playback of information is performed.

摘要翻译： 公开了一种允许信息被正确地记录和重放的光记录介质，即使当信息被记录到凹槽中的记录介质的类型与其中信息被记录到地的一种记录介质一起使用时 作为使用该介质进行记录和回放的方法。 基于读出的记录轨迹信息，选择记录轨迹信息，指示信息是否要记录在凹槽中或凹槽中，无论哪个凹槽和平台最适合于记录信息。 ，并且执行信息的记录或重放。

公开(公告)号：US20050163036A1

公开(公告)日：2005-07-28

申请号：US11087307

申请日：2005-03-23

申请人： Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Eiji Ohno ,  Nobuo Akahira

发明人： Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Eiji Ohno ,  Nobuo Akahira

IPC分类号： G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B11/105 ,  G11B7/24

CPC分类号： G11B11/10595 ,  G11B7/0045 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00736 ,  G11B7/08505 ,  G11B7/08511 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/126 ,  G11B7/1267

摘要： An optical information recording and reproducing apparatus for recording and reproducing an information signal on/from both concave portions and convex portions of guide grooves formed on a recording medium is disclosed. The optical information recording and reproducing apparatus includes: an optical portion for focusing a light beam emitted from a light source on the recording medium; a focusing control portion for controlling a focal point of the light beam; a tracking control portion for controlling the position of the light beam; a selection portion for selecting which of the concave portions and the convex portions of the guide grooves are used for recording or reproducing; a polarity inverting portion for inverting the polarity of an output signal from the tracking control portion depending on a result selected by the selection portion; a waveform setting portion for setting a modulation pattern for the light; and a signal reproduction portion for demodulating the information signal from a light reflected or transmitted by recorded marks recorded on the recording medium; wherein at least one of the focusing control portion, the tracking control portion, the waveform setting portion and the signal reproduction portion has at least two kinds of operation conditions for recording and reproducing the information signal on/from the concave portions and the convex portions of the guide grooves, and wherein the operation conditions are selected depending on the result selected by the selection portion.

公开(公告)号：US06893698B2

公开(公告)日：2005-05-17

申请号：US10270820

申请日：2002-10-15

申请人： Kenji Narumi ,  Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Rie Kojima ,  Takashi Nishihara ,  Noboru Yamada

发明人： Kenji Narumi ,  Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Rie Kojima ,  Takashi Nishihara ,  Noboru Yamada

IPC分类号： B32B3/02 ,  G01N21/59 ,  G01N21/84 ,  G01N21/95 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/24 ,  G11B7/24035 ,  G11B7/24038 ,  G11B7/241 ,  G11B7/243 ,  G11B7/258 ,  G11B7/259 ,  G11B7/26 ,  G11B11/105

CPC分类号： G11B7/24035 ,  G01N21/5911 ,  G11B7/00375 ,  G11B7/00454 ,  G11B7/0052 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/241 ,  G11B7/258 ,  G11B7/259 ,  G11B7/268 ,  G11B11/10584 ,  G11B2007/0013 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  Y10T428/21

摘要： An optical information recording medium having two or more information layers, wherein the irradiation of either the information layer with a laser beam converging thereon causes information signals to be recorded or reproduced; the nearer positioned information layer than the farthest information layer as viewed from the incidence side of the laser beam has a recording layer varying between two optically detectable states, and 0≦|Tc−Ta|/Tc≦0.1 where Tc is the transmittance of the nearer positioned information layer when the recording layer is in state (a) and Ta, the transmittance, when it is in state (b). This makes possible accurate accurately recording and reproduction of information onto and out of the farther information layer irrespective of whether or not any information is recorded on the nearer information layer.

摘要翻译： 一种具有两个或多个信息层的光学信息记录介质，其中在其上会聚的激光束的信息层的照射使信息信号被记录或再现; 从激光束的入射侧观察到的距离最远的信息层更靠近的信息层具有在两个光学可检测状态之间变化的记录层，并且<？in-line-formula description =“In-line Formulas”end =“ 引线“？> 0 <= | T -T <= 0.1 <？in-line-formula description = “在线公式”end =“tail”？>其中T 是当记录层处于状态（a）时的更靠近位置的信息层的透射率， 当它处于状态（b）时，透射率。 这使得将信息准确地准确地记录和再现到更远的信息层上和从更远的信息层出来，而不管任何信息是否记录在更靠近的信息层上。

公开(公告)号：US06667937B2

公开(公告)日：2003-12-23

申请号：US10338098

申请日：2003-01-06

申请人： Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Eiji Ohno ,  Nobuo Akahira

发明人： Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Eiji Ohno ,  Nobuo Akahira

IPC分类号： G11B7095

CPC分类号： G11B11/10595 ,  G11B7/0045 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00736 ,  G11B7/08505 ,  G11B7/08511 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/126 ,  G11B7/1267

摘要： An optical information recording and reproducing apparatus for recording and reproducing an information signal on/from both concave portions and convex portions of guide grooves formed on a recording medium is disclosed. The optical information recording and reproducing apparatus includes: an optical portion for focusing a light beam emitted from a light source on the recording medium; a focusing control portion for controlling a focal point of the light beam; a tracking control portion for controlling the position of the light beam; a selection portion for selecting which of the concave portions and the convex portions of the guide grooves are used for recording or reproducing; a polarity inverting portion for inverting the polarity of an output signal from the tracking control portion depending on a result selected by the selection portion; a waveform setting portion for setting a modulation pattern for the light; and a signal reproduction portion for demodulating the information signal from a light reflected or transmitted by recorded marks recorded on the recording medium; wherein at least one of the focusing control portion, the tracking control portion, the waveform setting portion and the signal reproduction portion has at least two kinds of operation conditions for recording and reproducing the information signal on/from the concave portions and the convex portions of the guide grooves, and wherein the operation conditions are selected depending on the result selected by the selection portion.

公开(公告)号：US5616390A

公开(公告)日：1997-04-01

申请号：US503846

申请日：1995-07-18

申请人： Naoyasu Miyagawa ,  Yasuhiro Gotoh

发明人： Naoyasu Miyagawa ,  Yasuhiro Gotoh

IPC分类号： G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B7/09 ,  G11B7/095 ,  G11B19/04 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  B32B3/00

CPC分类号： G11B7/24085 ,  G11B19/04 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B7/005 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/08505 ,  G11B7/0941 ,  G11B2220/20 ,  G11B7/0045 ,  G11B7/0901 ,  G11B7/0953 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21

摘要： An optical information recording medium is configured so that grooves and lands formed spirally or concentrically on a disk substrate are used as recording tracks. Identification signal areas are provided in which identification signals including positional information are formed in advance on the disk substrate. Information signal areas are formed separately from the identification signal areas so that information signals are recorded by irradiation with a light beam. The identification signals are formed on the grooves and lands not independently of each other, but so that each identification signal is formed so as to be shared by a respective adjacent groove and land. The period of arrangement of the identification signals in the radial direction of the recording tracks is twice the period of the recording tracks and crosstalk at the time of reproduction of the identification signals is suppressed. Accordingly, the identification signals can be reproduced well even where each of the identification signals is recorded both on a land and on a groove.

摘要翻译： 光学信息记录介质被配置为使得在盘基片上螺旋或同心地形成的凹槽和平台用作记录轨道。 提供识别信号区域，其中预先在盘基片上形成包括位置信息的识别信号。 信息信号区域与识别信号区域分开形成，以便通过用光束照射来记录信息信号。 识别信号彼此独立地形成在沟槽和沟槽上，但是每个识别信号形成为由各个相邻的沟槽和平台共享。 识别信号在记录磁道的径向上的布置周期是记录磁道周期的两倍，并且抑制了识别信号再现时的串扰。 因此，即使在陆地和凹槽上都记录了每个识别信号也能够良好地再现识别信号。

公开(公告)号：US5235581A

公开(公告)日：1993-08-10

申请号：US740629

申请日：1991-08-05

申请人： Naoyasu Miyagawa ,  Yasuhiro Gotoh

发明人： Naoyasu Miyagawa ,  Yasuhiro Gotoh

IPC分类号： G11B7/00 ,  G11B7/0037 ,  G11B7/085 ,  G11B7/12 ,  G11B7/135 ,  G11B19/12 ,  G11B23/03 ,  G11B23/30

CPC分类号： G11B7/085 ,  G11B19/12 ,  G11B23/0302 ,  G11B23/30 ,  G11B7/0037 ,  G11B7/08505 ,  G11B7/12 ,  G11B7/124 ,  G11B7/1245 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0006

摘要： An optical disc apparatus for recording, reproducing or erasing an information signal by converging a light flux onto a recording layer through a transparent substrate. The apparatus includes one or a plurality of optical heads having a plurality of objective lenses whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses, a cartridge for enclosing the optical disc, a discrimination hole which is formed on the cartridge, and a sensor for detecting the opening/closing state of the discrimination hole and for generating a discrimination signal. In accordance with the result of the discrimination as to the thickness of the loaded optical disc, the objective lens, in which the occurrence of the aberration is smallest, is used, so that the information signal can preferably be recorded, reproduced or erased onto/from the optical discs having different substrate thicknesses. Instead of an optical head having objective lenses, an optical head having a waveguide and a plurality of converging grating couplers whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses is provided to achieve the same object.

公开(公告)号：US20100302921A1

公开(公告)日：2010-12-02

申请号：US12745086

申请日：2009-11-19

申请人： Tomoyasu Takaoka ,  Shigeru Furumiya ,  Naoyasu Miyagawa

发明人： Tomoyasu Takaoka ,  Shigeru Furumiya ,  Naoyasu Miyagawa

IPC分类号： G11B19/00 ,  G11B7/26 ,  G11B7/00

CPC分类号： G11B7/126 ,  G11B7/24038

摘要： An information recording medium, comprising N number (N is an integer fulfilling N≧3) of information layers on which information is recordable, and allowing information to be recorded on each of the information layers and allowing information recorded on each of the information layers to be reproduced by being irradiated with laser light. The N number of information layers include an N'th information layer, an (N−1)th information layer, an (N−2)th information layer, . . . a second information layer and a first information layer sequentially located from a laser light incidence side. A reflectance of the N'th information layer is RN, and a reflectance of an M'th information layer (M refers to every integer fulfilling N>M≧1) is RM. The laser light used to irradiate the N'th information layer for reproducing information recorded on the N'th information layer has an upper limit reproduction power PrNmax, and the laser light used to irradiate the M'th information layer for reproducing information recorded on the M'th information layer has an upper limit reproduction power PrMmax. The following expressions (1) and (2) are concurrently fulfilled: RN>RM   (1) PrNmax

摘要翻译： 一种信息记录介质，包括可记录信息的信息层的N个数（N是满足N≥3的整数），并且允许将信息记录在每个信息层上并允许记录在每个信息层上的信息 通过用激光照射来再现。 N个信息层包括第N个信息层，第（N-1）个信息层，第（N-2）个信息层。 。 。 第二信息层和从激光入射侧依次定位的第一信息层。 第N个信息层的反射率为RN，第M个信息层（M为满足N>M≥1的每个整数）的反射率为RM。 用于照射第N信息层的用于再现记录在第N信息层上的信息的激光具有上限再现功率PrNmax，并且用于照射第M个信息层的激光用于再现记录在第N信息层上的信息 第M个信息层具有上限再现功率PrMmax。 同时满足下列表达式（1）和（2）：RN> RM（1）PrNmax

公开(公告)号：US20080175138A1

公开(公告)日：2008-07-24

申请号：US10568595

申请日：2005-07-08

申请人： Naoyasu Miyagawa

发明人： Naoyasu Miyagawa

IPC分类号： G11B7/24 ,  G11B7/09 ,  G11B7/004 ,  G11B7/007

CPC分类号： G11B7/0945 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0901 ,  G11B2007/0006

摘要： The present invention provides a method for recording and reproducing with an optical recording medium, with which either in-groove recording or on-groove recording is selected according to the type of recording medium, and information can be recorded and reproduced with good signal quality. To this end, a laser beam reflected by an information recording layer is received by a photodetector that has been split into at least two parts by a split line parallel to the direction of the grooves, in a region in which the groove width is greater than the width between grooves, and it is determined whether the grooves on the side where the laser beam is incident are convex or concave on the basis of a sum signal and difference signal of the photodetection signals outputted from the split photodetector.

摘要翻译： 本发明提供了一种用光学记录介质进行记录和再现的方法，根据记录介质的类型选择槽内记录或槽内记录，并且可以以良好的信号质量记录和再现信息。 为此，由信息记录层反射的激光束被光电检测器接收，该光电检测器通过平行于槽的方向的分割线在槽宽度大于的区域中被分成至少两部分 槽之间的宽度，并且基于从分离光电检测器输出的光电检测信号的和信号和差信号来确定激光束入射侧的沟槽是凸的还是凹的。