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91. 发明授权

US06343282B1 Optical disk reading device using both a decipher key and disk identification information 有权
标题翻译：光盘读取装置同时使用解密密钥和磁盘识别信息
公开(公告)号：US06343282B1
公开(公告)日：2002-01-29
申请号：US09450413
申请日：1999-11-30
申请人： Mitsuaki Oshima , Yoshiho Gotoh , Shinichi Tanaka , Kenji Koishi , Mitsurou Moriya , Yoshinari Takemura
发明人： Mitsuaki Oshima , Yoshiho Gotoh , Shinichi Tanaka , Kenji Koishi , Mitsurou Moriya , Yoshinari Takemura
IPC分类号： G06F1760
CPC分类号： G11B27/24 , G06F21/10 , G06F2221/0711 , G06K1/126 , G06K19/04 , G06K19/06028 , G06K19/08 , G06K19/14 , G06K2019/06271 , G11B5/86 , G11B7/0037 , G11B7/005 , G11B7/00736 , G11B7/26 , G11B13/04 , G11B13/045 , G11B19/04 , G11B19/12 , G11B19/122 , G11B20/00086 , G11B20/00094 , G11B20/00115 , G11B20/00123 , G11B20/00137 , G11B20/00144 , G11B20/00152 , G11B20/00173 , G11B20/00181 , G11B20/00188 , G11B20/00195 , G11B20/0021 , G11B20/00224 , G11B20/00253 , G11B20/0026 , G11B20/00268 , G11B20/00326 , G11B20/00347 , G11B20/00492 , G11B20/00514 , G11B20/00528 , G11B20/00543 , G11B20/00586 , G11B20/0071 , G11B20/0084 , G11B20/00855 , G11B20/00876 , G11B20/10 , G11B20/1217 , G11B20/1252 , G11B20/1403 , G11B20/1426 , G11B20/1833 , G11B23/0042 , G11B23/284 , G11B23/30 , G11B23/38 , G11B2007/0013 , G11B2020/1259 , G11B2220/2545 , G11B2220/2562
摘要： A device for reading encrypted information recorded on an optical disk having first and second recording areas, the device can read disk identification information recorded in the second recording area, select a specific decipher key among multiple decipher keys, and decrypt encrypted information from the optical disk using both the disk identification information unique to that optical disk and the specific decipher key.
摘要翻译：一种用于读取记录在具有第一和第二记录区域的光盘上的加密信息的设备，该设备可以读取记录在第二记录区域中的磁盘识别信息，在多个解密密钥之间选择一个特定解密密钥，并从光盘中解密加密信息使用该光盘唯一的盘识别信息和特定解密密钥。

92. 发明授权

US06285762B1 Optical disk, optical disk barcode forming method, optical disk reproduction apparatus, marking forming apparatus, method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk 有权
标题翻译：光盘，光盘条形码形成方法，光盘再现装置，标记形成装置，在光盘上形成激光标记的方法以及制造光盘的方法
公开(公告)号：US06285762B1
公开(公告)日：2001-09-04
申请号：US09401935
申请日：1999-09-23
申请人： Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
发明人： Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
IPC分类号： H04N7167
CPC分类号： G11B27/24 , G06K1/126 , G06K19/04 , G06K19/06018 , G06K19/06028 , G06K19/08 , G06K19/14 , G06K2019/06243 , G06K2019/06271 , G11B5/86 , G11B7/0037 , G11B7/005 , G11B7/0053 , G11B7/007 , G11B7/00736 , G11B7/24038 , G11B7/26 , G11B7/268 , G11B13/04 , G11B13/045 , G11B19/04 , G11B19/12 , G11B19/122 , G11B20/00086 , G11B20/00094 , G11B20/00115 , G11B20/00123 , G11B20/00137 , G11B20/00144 , G11B20/00152 , G11B20/0021 , G11B20/0026 , G11B20/00268 , G11B20/00326 , G11B20/00347 , G11B20/00384 , G11B20/00492 , G11B20/00528 , G11B20/00543 , G11B20/00557 , G11B20/00586 , G11B20/0071 , G11B20/0084 , G11B20/00855 , G11B20/00876 , G11B20/0092 , G11B20/10 , G11B20/1217 , G11B20/1252 , G11B20/1403 , G11B20/1419 , G11B20/1426 , G11B20/1833 , G11B23/0042 , G11B23/281 , G11B23/283 , G11B23/284 , G11B23/30 , G11B23/34 , G11B23/38 , G11B2007/0013 , G11B2020/122 , G11B2020/1259 , G11B2220/213 , G11B2220/2545 , G11B2220/2562 , G11B2220/61
摘要： An optical disk includes a first area where data is recorded with pit pattern, a second information area where another data is recorded with marks which have a stripe-like configuration, and a guard band area formed between the first information area and the second information area. An address is written with pit pattern on the guard band area.
摘要翻译：光盘包括以凹坑图案记录数据的第一区域，其中用具有条状配置的标记记录另一个数据的第二信息区域以及形成在第一信息区域和第二信息区域之间的保护带区域。地址在保护带区域用坑图案写入。

93. 发明授权

US06125181A Optical disk, an optical disk barcode forming method, an optical reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk 有权
标题翻译：光盘，光盘条形码形成方法，光学再现装置，标记形成装置，在光盘上形成激光标记的方法以及制造光盘的方法
公开(公告)号：US06125181A
公开(公告)日：2000-09-26
申请号：US404639
申请日：1999-09-23
申请人： Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
发明人： Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
IPC分类号： G11B7/24 , G06F1/00 , G06K1/12 , G06K19/04 , G06K19/06 , G06K19/08 , G06K19/14 , G11B5/86 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/005 , G11B7/0055 , G11B7/007 , G11B7/09 , G11B7/26 , G11B13/04 , G11B19/04 , G11B19/06 , G11B19/12 , G11B20/00 , G11B20/10 , G11B20/12 , G11B20/14 , G11B20/18 , G11B23/00 , G11B23/28 , G11B23/30 , G11B23/38 , G11B27/24 , H04L9/10 , H04K1/00
CPC分类号： G11B27/24 , G06K1/126 , G06K19/04 , G06K19/06018 , G06K19/06028 , G06K19/08 , G06K19/14 , G11B19/04 , G11B19/12 , G11B19/122 , G11B20/00086 , G11B20/00094 , G11B20/00115 , G11B20/00123 , G11B20/00137 , G11B20/00144 , G11B20/00152 , G11B20/0021 , G11B20/0026 , G11B20/00268 , G11B20/00326 , G11B20/00347 , G11B20/00384 , G11B20/00492 , G11B20/00528 , G11B20/00543 , G11B20/00557 , G11B20/00586 , G11B20/0071 , G11B20/0084 , G11B20/00855 , G11B20/00876 , G11B20/0092 , G11B20/10 , G11B20/1217 , G11B20/1252 , G11B20/1419 , G11B23/0042 , G11B23/281 , G11B23/283 , G11B23/284 , G11B23/30 , G11B23/34 , G11B23/38 , G11B7/0053 , G11B7/007 , G11B7/00736 , G11B7/24038 , G11B7/26 , G11B7/268 , G06K2019/06243 , G06K2019/06271 , G11B13/04 , G11B13/045 , G11B20/1403 , G11B20/1426 , G11B20/1833 , G11B2007/0013 , G11B2020/122 , G11B2020/1259 , G11B2220/213 , G11B2220/2545 , G11B2220/2562 , G11B2220/61 , G11B5/86 , G11B7/0037 , G11B7/005
摘要： Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
摘要翻译：公开了一种光盘条形码形成方法，其中作为条形码的信息，作为ID的形式的用于防盗的位置信息被编码为条形码，并且通过激光修整记录在PCA的PCA区域中的反射膜上光盘。当在再现装置上播放由此制造的光盘时，可以使用相同的光学拾取器来重放条形码数据。

94. 发明授权

US6052465A Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk 失效
标题翻译：光盘，光盘条形码形成方法，光盘再现装置，标记形成装置，在光盘上形成激光标记的方法以及制造光盘的方法
公开(公告)号：US6052465A
公开(公告)日：2000-04-18
申请号：US649411
申请日：1996-05-16
申请人： Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
发明人： Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
IPC分类号： G11B7/24 , G06F1/00 , G06K1/12 , G06K19/04 , G06K19/06 , G06K19/08 , G06K19/14 , G11B5/86 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/005 , G11B7/0055 , G11B7/007 , G11B7/09 , G11B7/26 , G11B13/04 , G11B19/04 , G11B19/06 , G11B19/12 , G11B20/00 , G11B20/10 , G11B20/12 , G11B20/14 , G11B20/18 , G11B23/00 , G11B23/28 , G11B23/30 , G11B23/38 , G11B27/24 , H04L9/10 , H04L9/00
CPC分类号： G11B27/24 , G06K1/126 , G06K19/04 , G06K19/06018 , G06K19/06028 , G06K19/08 , G06K19/14 , G11B19/04 , G11B19/12 , G11B19/122 , G11B20/00086 , G11B20/00094 , G11B20/00115 , G11B20/00123 , G11B20/00137 , G11B20/00144 , G11B20/00152 , G11B20/0021 , G11B20/0026 , G11B20/00268 , G11B20/00326 , G11B20/00347 , G11B20/00384 , G11B20/00492 , G11B20/00528 , G11B20/00543 , G11B20/00557 , G11B20/00586 , G11B20/0071 , G11B20/0084 , G11B20/00855 , G11B20/00876 , G11B20/0092 , G11B20/10 , G11B20/1217 , G11B20/1252 , G11B20/1419 , G11B23/0042 , G11B23/281 , G11B23/283 , G11B23/284 , G11B23/30 , G11B23/34 , G11B23/38 , G11B7/0053 , G11B7/007 , G11B7/00736 , G11B7/24038 , G11B7/26 , G11B7/268 , G06K2019/06243 , G06K2019/06271 , G11B13/04 , G11B13/045 , G11B20/1403 , G11B20/1426 , G11B20/1833 , G11B2007/0013 , G11B2020/122 , G11B2020/1259 , G11B2220/213 , G11B2220/2545 , G11B2220/2562 , G11B2220/61 , G11B5/86 , G11B7/0037 , G11B7/005
摘要： Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recoded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
摘要翻译：公开了一种光盘条形码形成方法，其中作为条形码的信息，作为ID的形式的用于防盗的位置信息被编码为条形码，并且通过在PCA的PCA区域中的反射膜上进行激光修整来重新编码光盘。当在再现装置上播放由此制造的光盘时，可以使用相同的光学拾取器来重放条形码数据。

95. 发明授权

US6009054A Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus 有权
公开(公告)号：US6009054A
公开(公告)日：1999-12-28
申请号：US206589
申请日：1998-12-07
申请人： Shin-ichi Kadowaki , Shinichi Tanaka , Seiji Nishiwaki , Kousei Sano , Seiji Nishino
发明人： Shin-ichi Kadowaki , Shinichi Tanaka , Seiji Nishiwaki , Kousei Sano , Seiji Nishino
IPC分类号： G11B5/016 , G11B5/55 , G11B7/09 , G11B21/10 , G11B7/00
CPC分类号： G11B21/10 , G11B5/5556 , G11B5/016 , G11B5/5565 , G11B7/0903 , G11B7/0941
摘要： In a magnetic recording medium to detect tracking error signals optically where an optical head and a magnetic head scan different tracks, two signals having phases different by .pi./2 are generated and added or subtracted. By changing the amplitude of the two signals with a changeable gain amplifying means, a phase of a tracking error signal is changed so that the servo operation is conducted at the middle of the amplitude of the tracking error signal to keep the magnetic head on track.

96. 发明授权

US5974140A Information carrier and recording and/or reproducing apparatus and/or initializing apparatus 失效
标题翻译：信息载体和记录和/或再现装置和/或初始化装置
公开(公告)号：US5974140A
公开(公告)日：1999-10-26
申请号：US669643
申请日：1996-06-24
申请人： Shinichi Tanaka
发明人： Shinichi Tanaka
IPC分类号： G11B15/02 , G06F1/00 , G06F12/14 , G06F21/00 , G11B15/087 , G11B19/02 , G11B20/00 , G11B20/10 , G11B20/12 , G11B23/03 , G11B23/28 , G11B23/30
CPC分类号： G11B23/284 , G06F21/10 , G11B19/02 , G11B20/00086 , G11B20/00115 , G11B20/00188 , G11B20/0021 , G11B20/00246 , G11B20/00253 , G11B20/00304 , G11B20/00347 , G11B20/00557 , G11B20/00695 , G11B20/0071 , G11B20/00746 , G11B20/00876 , G11B20/12 , G11B23/0302 , G11B23/0305 , G06F2211/007 , G06F2221/0737 , G06F2221/2135 , G11B23/28
摘要： ID codes are given individually to each reproducing apparatus. An information carrier has a subsidiary storing area for recording reproduction-management-information (RMI) and ID codes can be registered in this area. When the ID code is registered, the reproducing apparatus is permitted to reproduce main information from the information carrier. When a reproducing apparatus with an unregistered ID code tries to reproduce the main information, the ID code of the reproducing apparatus itself is registered in the RMI of the information carrier and the main information is reproduced. The number of ID codes for permitting registration in the RMI is limited. When the area for registering the ID code is fully occupied, the main information cannot be reproduced by reproducing apparatuses that have unregistered ID codes. When the reproducing apparatus digitally copies the main information reproduced from the information carrier where the ID code of the reproducing apparatus is registered, the ID code of the reproducing apparatus is registered in the information carrier of the copy destination. An initializing apparatus for initializing the RMI in the information carrier accumulates the total number of ID codes registrable in the RMIs of the information carriers initialized by the initializing apparatus.
摘要翻译： ID代码分别给予每个再现设备。信息载体具有用于记录再现管理信息（RMI）的辅助存储区域，并且可以在该区域中登记ID码。当ID码被注册时，允许再现设备从信息载体再现主要信息。当具有未登记的ID码的再现设备尝试再现主信息时，再现设备本身的ID码被登记在信息载体的RMI中，并且主信息被再现。允许在RMI中注册的ID码的数量有限。当用于登记ID码的区域被完全占用时，不能通过具有未注册的ID码的再现装置来再现主信息。当再现设备数字地复制从重放设备的ID码被登记的信息载体再现的主信息时，再现设备的ID码被登记在复制目的地的信息载体中。用于初始化信息载体中的RMI的初始化装置累积由初始化装置初始化的信息载体的RMI中可注册的ID码的总数。

97. 发明授权

US5768251A Optical recording/reproducing apparatus for high density multilayered disks 失效
标题翻译：用于高密度多层盘的光学记录/再现装置
公开(公告)号：US5768251A
公开(公告)日：1998-06-16
申请号：US681500
申请日：1996-07-23
申请人： Noboru Ito , Shinichi Tanaka , Sadao Mizuno , Kenichi Nishiuchi
发明人： Noboru Ito , Shinichi Tanaka , Sadao Mizuno , Kenichi Nishiuchi
IPC分类号： G11B7/00 , G11B7/005 , G11B7/013 , G11B7/24 , G11B7/26 , G11B11/105
CPC分类号： G11B7/24085 , G11B11/10584 , G11B7/24 , G11B7/26 , G11B2007/0013 , G11B7/005
摘要： A multi-layer optical disk includes a plurality of recording layers and each recording layer is composed of a first layer and a second layer having respective transmission indices of T1A and T2A with respect to a disk irradiation beam intensity A and having respective transmission indices of T1B and T2B with respect to a disk irradiation beam intensity B such that T1A.times.T2A=T1B.times.T2B. The interval between one recording layer and another recording layer is at least 10 times as long as a wavelength of an optical source providing the disk irradiation beams. Furthermore, the first and second layers may have respective thicknesses of H1 and H2 and respective refractive indices of N1A and N2A with respect to a disk irradiation beam intensity A and have respective refractive indices of N1B and N2B with respect to an irradiation beam intensity B such that N1A.times.H1+N2A.times.H2=N1B.times.H1+N2B.times.H2.
摘要翻译：多层光盘包括多个记录层，并且每个记录层由相对于盘照射光束强度A分别具有T1A和T2A的各自传输指数的第一层和第二层组成，并具有各自的传输指数T1B 和T2B相对于盘照射束强度B使得T1AxT2A = T1BxT2B。一个记录层与另一个记录层之间的间隔是提供光盘照射光束的光源的波长的至少10倍。此外，第一层和第二层可以具有相对于盘照射束强度A的H1和H2的相应厚度以及N1A和N2A的相应折射率，并且相对于照射束强度B具有相应的折射率N1B和N2B N1AxH1 + N2AxH2 = N1BxH1 + N2BxH2。

98. 发明授权

US5748593A Data reproduction apparatus 失效
标题翻译：数据再现装置
公开(公告)号：US5748593A
公开(公告)日：1998-05-05
申请号：US660196
申请日：1996-06-03
申请人： Shinichi Tanaka , Isao Kimura
发明人： Shinichi Tanaka , Isao Kimura
IPC分类号： G11B11/105 , G11B20/10 , G11B20/14 , G11B7/00
CPC分类号： G11B20/10055 , G11B20/10009 , G11B20/1403 , G11B11/10515
摘要： A data reproduction apparatus includes a PR-equalizing circuit which equalizes data reproduction signals recorded on a recording medium based on a partial response system and produces output signals, a binary code circuit which changes output signals from the PR-equalizing circuit into binary signals, a clock generation circuit which generates clock signals synchronized to the edges of the binary signals, A/D converters which sample the output signals from the PR-equalizing circuit based on the clock signal and generates sample data, decoding circuits which decode the sample data based on a predetermined ideal amplitude value and generates reproduced data, and a synthesis circuit which synthesizes reproduced data from the decoding circuits. A second data reproduction apparatus includes an equalizing circuit which equalizes wave pattern reproduction signals by a partial response method, a binary code circuit which changes the wave pattern equalized reproduction signals into binary coded signals, a PLL circuit which generates clock signals synchronized with the edges of the binary coded signals, coding circuits which transform the wave pattern equalized reproduction signals into binary signals by the clock signals from the PLL circuits, and a synthesis circuit which synthesizes the binary signals from the coding circuits.
摘要翻译：数据再现装置包括PR均衡电路，其均衡基于部分响应系统记录在记录介质上的数据再现信号并产生输出信号;将来自PR均衡电路的输出信号改变成二进制信号的二进制码电路，时钟生成电路，其生成与二进制信号的边沿同步的时钟信号; A / D转换器，其基于时钟信号对来自PR均衡电路的输出信号进行采样，并生成采样数据;解码电路，其基于预定的理想振幅值并产生再现数据，以及合成电路，其合成来自解码电路的再现数据。第二数据再现装置包括：均衡电路，其通过部分响应方法对波形图形再现信号进行均衡;二进制码电路，其将波形图形均衡的再现信号改变成二进制编码信号; PLL电路，生成与边缘同步的时钟信号二进制编码信号，通过来自PLL电路的时钟信号将波形图案将再现信号变换为二进制信号的编码电路，以及从编码电路合成二进制信号的合成电路。

99. 发明授权

US5579097A Xerographic printing and sheet processing apparatus 失效
标题翻译：静电印刷和片材处理设备
公开(公告)号：US5579097A
公开(公告)日：1996-11-26
申请号：US89377
申请日：1993-07-12
申请人： Tetsuro Tomoe , Hiroaki Tsuchiya , Daisuke Hayashi , Shinichi Tanaka
发明人： Tetsuro Tomoe , Hiroaki Tsuchiya , Daisuke Hayashi , Shinichi Tanaka
IPC分类号： B65H5/36 , G03G15/00 , G03G15/16 , G03G15/20 , G03G21/10
CPC分类号： G03G15/6552 , G03G15/2028 , G03G15/2039 , G03G15/2064 , G03G15/657 , G03G21/1685 , G03G2215/00413 , G03G2215/00421 , G03G2215/00649 , G03G2215/00679
摘要： A sheet processing apparatus operating in xerographic printing apparatus employs a single-component magnetic toner. The inventive features of the sheet processing apparatus are directed toward smooth transportation and discharge of printing sheets sent through the printing apparatus, across a sheet transport guide, and through an image fixing and sheet transporting unit which finally discharges the printing sheets. Conductivity of the transport guide is selected by the material of which it is made, specified herein to have superficial resistivity in the range of ten thousand to one hundred million megohms. Charge applied to a printing sheet to electrostatically attract the magnetic toner during the xerographic printing is thus drained by the transport guide gradually enough not to disturb the adhesion of the toner to the sheet, yet rapidly enough to prevent the sheet from being curled upward by electrostatic attraction toward a residual toner container just over the downstream end of the guide, in the optimally compacted arrangement of the various components of the sheet processing and xerographic printing apparatus into a facsimile machine or the like.
摘要翻译：在静电印刷装置中操作的片材处理装置采用单组分磁性调色剂。片材处理装置的发明特征是针对通过打印装置送出的打印纸，穿过纸张传送引导件以及通过最终排出打印纸的图像定影和纸张传送单元的平滑的输送和排出。运输导轨的电导率由其制造的材料选择，这里规定具有在十万到十亿兆欧范围内的表面电阻率。因此，在静电印刷过程中施加到印刷纸上以静电吸引磁性调色剂的电荷因此被输送引导件逐渐排出，足以不影响调色剂对片材的粘附，但足够快以防止片材被静电卷曲向上在纸张处理和静电印刷装置的各种部件的最佳压实布置中，到导向装置的下游端上的残留调色剂容器的吸引力转移到传真机等中。

100. 发明授权

US5563873A Multilayer optical disk and apparatus 失效
标题翻译：多层光盘和设备
公开(公告)号：US5563873A
公开(公告)日：1996-10-08
申请号：US384459
申请日：1995-02-02
申请人： Noboru Ito , Shinichi Tanaka , Sadao Mizuno , Kenichi Nishiuchi
发明人： Noboru Ito , Shinichi Tanaka , Sadao Mizuno , Kenichi Nishiuchi
IPC分类号： G11B7/00 , G11B7/005 , G11B7/013 , G11B7/24 , G11B7/26 , G11B11/105
CPC分类号： G11B7/24085 , G11B11/10584 , G11B7/24 , G11B7/26 , G11B2007/0013 , G11B7/005
摘要： A multi-layer optical disk includes a plurality of recording layers and each recording layer is composed of a first layer and a second layer having respective transmission indices of T1A and T2A with respect to a disk irradiation beam intensity A and having respective transmission indices of T1B and T2B with respect to a disk irradiation beam intensity B such that T1A.times.T2A =T1B.times.T2B. The interval between one recording layer and another recording layer is at least 10 times as long as a wavelength of an optical source providing the disk irradiation beams. Furthermore, the first and second layers may have respective thicknesses of H1 and H2 and respective refractive indices of N1A and N2A with respect to a disk irradiation beam intensity A and have respective refractive indices of N1B and N2B with respect to an irradiation beam intensity B such that N1A.times.H1+N2A.times.H2=N1B.times.H1+N2B.times.H2.
摘要翻译：多层光盘包括多个记录层，并且每个记录层由相对于盘照射光束强度A分别具有T1A和T2A的各自传输指数的第一层和第二层组成，并具有各自的传输指数T1B 和T2B相对于盘照射束强度B使得T1AxT2A = T1BxT2B。一个记录层与另一个记录层之间的间隔是提供光盘照射光束的光源的波长的至少10倍。此外，第一层和第二层可以具有相对于盘照射束强度A的H1和H2的相应厚度以及N1A和N2A的相应折射率，并且相对于照射束强度B具有相应的折射率N1B和N2B N1AxH1 + N2AxH2 = N1BxH1 + N2BxH2。

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