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31. 发明授权

US07522504B2 Signal quality evaluation method, information recording/reproducing system, and recording compensation method 失效
标题翻译：信号质量评估方法，信息记录/再现系统和记录补偿方法
公开(公告)号：US07522504B2
公开(公告)日：2009-04-21
申请号：US11418245
申请日：2006-05-05
申请人： Yutaka Kashihara , Yuji Nagai , Akihito Ogawa
发明人： Yutaka Kashihara , Yuji Nagai , Akihito Ogawa
IPC分类号： G11B11/00
CPC分类号： G11B20/10009 , G11B7/0062 , G11B7/00736 , G11B20/10055 , G11B20/10481
摘要： Signal quality evaluation is performed using a predetermined reproduction signal, a first pattern corresponding to a signal waveform pattern of the reproduction signal, and a given pattern corresponding to the signal waveform pattern of the reproduction signal and being different from the first pattern.
摘要翻译：使用预定的再现信号，对应于再现信号的信号波形图案的第一图案和与再现信号的信号波形图案对应的给定图案，并且与第一图案不同，执行信号质量评估。

32. 发明申请

US20070153661A1 STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD 有权
公开(公告)号：US20070153661A1
公开(公告)日：2007-07-05
申请号：US11563768
申请日：2006-11-28
申请人： Hideo Ando , Yutaka Kashihara , Akihito Ogawa , Sumitaka Maruyama , Yuji Nagai
发明人： Hideo Ando , Yutaka Kashihara , Akihito Ogawa , Sumitaka Maruyama , Yuji Nagai
IPC分类号： G11B20/12
CPC分类号： G11B7/00736 , G11B7/00454 , G11B7/00456 , G11B7/0053 , G11B7/24076 , G11B7/24079 , G11B7/24082 , G11B7/246 , G11B7/2467 , G11B7/2472 , G11B7/2492 , G11B7/2533 , G11B7/2534 , G11B7/256 , G11B7/259 , G11B20/10 , G11B20/12 , G11B20/1217 , G11B20/1883 , G11B20/1889 , G11B27/24 , G11B27/329 , G11B2220/20 , G11B2220/218
摘要： According to one embodiment, a storage medium includes a burst cutting area at an inner periphery, wherein the burst cutting area has includes plural burst-cutting-area data areas.

33. 发明授权

US07091887B2 Modulator, modulation method, and method of manufacturing an optical recordable medium with enhanced security for confidential information 有权
标题翻译：调制器，调制方法和制造具有增强的机密信息安全性的光可记录介质的方法
公开(公告)号：US07091887B2
公开(公告)日：2006-08-15
申请号：US11056349
申请日：2005-02-10
申请人： Yuji Nagai , Yutaka Kashihara , Tadashi Kojima
发明人： Yuji Nagai , Yutaka Kashihara , Tadashi Kojima
IPC分类号： H03M5/00 , G11B7/0045
CPC分类号： G11B20/00086 , G11B20/0021 , G11B20/00362 , G11B20/00492 , G11B20/00579 , G11B20/00927 , G11B2020/1457
摘要： A modulator includes a replacement processing unit which replaces a part of main information code-converted in a main information converter with specific information code-converted in a specific information converter and a direct-current component suppress processing unit which performs direct-current component suppress processing for the main information which has undergone the replacement processing in the replacement processing unit. The direct-current component suppress processing can be performed for the main information after the replacement processing of the main information with the specific information to prevent deterioration in direct-current component suppress characteristics due to the replacement processing.
摘要翻译：调制器包括替换处理单元，该替换处理单元将特定信息转换器中的特定信息代码转换的主信息代码转换的一部分替换为特定信息转换器中的代码转换器，以及执行直流分量抑制处理的直流分量抑制处理单元对于在替换处理单元中进行了替换处理的主要信息。可以对具有特定信息的主信息的替换处理之后的主信息执行直流分量抑制处理，以防止由替换处理引起的直流分量抑制特性的劣化。

34. 发明申请

US20050094515A1 Optical disk reproduction apparatus and optical disk reproduction method 失效
标题翻译：光盘再现装置和光盘再现方法
公开(公告)号：US20050094515A1
公开(公告)日：2005-05-05
申请号：US10935183
申请日：2004-09-08
申请人： Yuji Nagai , Akihito Ogawa
发明人： Yuji Nagai , Akihito Ogawa
IPC分类号： G11B20/10 , G11B7/005 , G11B7/007 , G11B20/14 , G11B7/00 , G11B5/09
CPC分类号： G11B20/10009 , G11B7/0053 , G11B7/24082 , G11B20/10333
摘要： There are provided a wobble signal reading unit configured to read a signal corresponding to a wobble formed at a predetermined track from an optical disk on which address information is recorded by applying phase modulation to the wobble formed at the track, an address information reproducing unit configured to reproduce the address information by applying phase detecting processing to the wobble signal read at the wobble signal reading unit, and binarizing an amplitude of an obtained phase detection signal by being compared with a predetermined threshold value, and a correcting unit configured to correct asymmetry of the amplitude generated in the phase detection signal obtained by the address information reproducing unit with respect to the predetermined threshold value at the time of reading the wobble signal from the predetermined track by the wobble signal reading unit.
摘要翻译：提供了一种摆动信号读取单元，其被配置为从对从轨道形成的摆动施加相位调制的光盘上读取对应于在预定轨道上形成的摆动的信号，所述摆动地址信息被记录在地址信息上，地址信息再现单元配置通过对在摆动信号读取单元读取的摆动信号进行相位检测处理来再现地址信息，并将所获得的相位检测信号的幅度与预定阈值进行二值化，以及修正单元，在通过摆动信号读取单元从预定轨迹读取摆动信号时，由地址信息再现单元获得的相位检测信号中产生的相对于预定阈值产生的振幅。

35. 发明授权

US09166783B2 Protection method, decryption method, player, storage medium, and encryption apparatus of digital content 有权
标题翻译：保护方法，解密方法，播放器，存储介质和数字内容的加密装置
公开(公告)号：US09166783B2
公开(公告)日：2015-10-20
申请号：US13820343
申请日：2011-05-30
申请人： Yuji Nagai , Hiroyuki Sakamoto , Hiroto Nakai , Seiji Miyata , Hideki Mimura
发明人： Yuji Nagai , Hiroyuki Sakamoto , Hiroto Nakai , Seiji Miyata , Hideki Mimura
IPC分类号： H04L9/08
CPC分类号： H04L9/0833 , H04L9/0816 , H04L9/0822 , H04L9/0894 , H04L2209/60
摘要： A digital content protection method includes distributing, together with an encrypted content, an encrypted protected program key, a protected content key, and a protected code including an individual instruction code, at least some elements of which are designed according to a unique operation code specification for each content player or for each content player group.
摘要翻译：数字内容保护方法包括与加密内容一起分发加密的受保护程序密钥，受保护内容密钥和包括单独指令代码的受保护代码，其中至少一些元件根据唯一的操作代码规范设计对于每个内容播放器或每个内容播放器组。

36. 发明授权

US08989374B2 Cryptographic device for secure authentication 有权
标题翻译：用于安全认证的加密设备
公开(公告)号：US08989374B2
公开(公告)日：2015-03-24
申请号：US13524497
申请日：2012-06-15
申请人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita
发明人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita
IPC分类号： H04L9/00 , H04L29/06 , H04L9/32
CPC分类号： G09C1/00 , H04L9/0866 , H04L2209/12 , H04N5/907
摘要： According to one embodiment, a memory being used to store a host identification key, a host constant (HC), and a first key, the first key being generated based on the host constant (HC); a first generator configured to decrypt a family key block read from an external device with the host identification key to generate a family key; a second generator configured to decrypt encrypted secret identification information read from the external device with the family key to generate a secret identification information; a third generator configured to generate a random number; a fourth generator configured to generate a session key by using the first key and the random number; a fifth generator configured to generate a first authentication information by processing the secret identification information with the session key in one-way function operation.
摘要翻译：根据一个实施例，用于存储主机识别密钥，主机常数（HC）和第一密钥的存储器，所述第一密钥基于所述主机常数（HC）生成; 第一发生器，被配置为使用所述主机识别密钥来解密从外部设备读取的家庭密钥块，以生成家庭密钥; 第二发生器，被配置为使用所述家庭密钥解密从所述外部设备读取的加密的秘密识别信息，以生成秘密识别信息; 配置为生成随机数的第三生成器; 第四发生器，被配置为通过使用所述第一密钥和所述随机数来生成会话密钥; 第五生成器，被配置为通过在单向功能操作中用会话密钥处理秘密识别信息来生成第一认证信息。

37. 发明授权

US08949621B2 Memory device authentication 有权
标题翻译：内存设备认证
公开(公告)号：US08949621B2
公开(公告)日：2015-02-03
申请号：US13523259
申请日：2012-06-14
申请人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita
发明人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita
IPC分类号： H04L9/32 , H04L9/08
CPC分类号： H04L9/0822 , H04L9/0866 , H04L9/0869 , H04L9/0897 , H04L9/3242 , H04L9/3271
摘要： According to one embodiment, a device includes a first data generator configured to generate a second key (HKey) by encrypting a host constant (HC) with the first key (NKey); a second data generator configured to generate a session key (SKey) by encrypting a random number (RN) with the second key (HKey); a one-way function processor configured to generate an authentication information (Oneway-ID) by processing the secret identification information (SecretID) with the session key (SKey) in one-way function operation; and a data output interface configured to output the encrypted secret identification information (E-SecretID) and the authentication information (Oneway-ID) to outside of the device.
摘要翻译：根据一个实施例，一种设备包括：第一数据生成器，被配置为通过用第一密钥（NKey）加密主机常数（HC）来生成第二密钥（HKey）; 第二数据生成器，被配置为通过用第二密钥（HKey）加密随机数（RN）来生成会话密钥（SKey）; 单向功能处理器，被配置为通过在单向功能操作中通过会话密钥（SKey）处理秘密识别信息（SecretID）来生成认证信息（Oneway-ID）; 以及数据输出接口，被配置为将加密的秘密识别信息（E-SecretID）和认证信息（Oneway-ID）输出到设备外部。

38. 发明授权

US08898463B2 Device 有权
标题翻译：设备
公开(公告)号：US08898463B2
公开(公告)日：2014-11-25
申请号：US13524826
申请日：2012-06-15
申请人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita
发明人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita
IPC分类号： H04L29/06 , H04L9/32 , H04L9/00
CPC分类号： G06F21/44 , G06F21/79 , G06F2221/2129 , H04L9/3234
摘要： According to one embodiment, a device includes a cell array including an ordinary area, a hidden area, and an identification information record area in which identification information which defines a condition for accessing the hidden area is recorded. An authentication circuit performs authentication. A sensing circuit recognizes information recorded in the identification information storage area, determines the information recorded in the identification information record area when an access request selects the hidden area, validates an access to the hidden area when determined that the identification information is recorded, and invalidates an access to the hidden area when determined that the identification information is not recorded.
摘要翻译：根据一个实施例，一种装置包括一个单元阵列，包括普通区域，隐藏区域和识别信息记录区域，其中记录了定义用于访问隐藏区域的条件的识别信息。认证电路执行认证。感测电路识别记录在识别信息存储区域中的信息，当访问请求选择隐藏区域时，确定记录在识别信息记录区域中的信息，当确定识别信息被记录时验证对隐藏区域的访问，并且无效当确定没有记录识别信息时对隐藏区域的访问。

39. 发明授权

US08855297B2 Device and authentication method therefor 有权
标题翻译：设备及认证方法
公开(公告)号：US08855297B2
公开(公告)日：2014-10-07
申请号：US13524475
申请日：2012-06-15
申请人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita , Toshihiro Suzuki , Noboru Shibata
发明人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita , Toshihiro Suzuki , Noboru Shibata
IPC分类号： G06F21/24
CPC分类号： H04L9/0816 , G11B20/00362 , G11B20/00427 , H04L9/0822 , H04L9/0833 , H04L9/0897 , H04L9/32 , H04L2209/601
摘要： According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information.
摘要翻译：根据一个实施例，一种认证方法包括：通过在单向功能操作中用存储器会话密钥计算秘密识别信息，通过存储器生成第一认证信息，发送加密的秘密识别信息，家庭密钥块和第一认证信息发送到主机，并且由主机通过计算通过用单向功能操作中的主机会话密钥对加密的秘密识别信息进行解密而生成的秘密识别信息来生成第二认证信息。该方法还包括由主机将第一认证信息与第二认证信息进行比较。

40. 发明授权

US08812843B2 Device and authentication method therefor 有权
标题翻译：设备及认证方法
公开(公告)号：US08812843B2
公开(公告)日：2014-08-19
申请号：US13524843
申请日：2012-06-15
申请人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita , Toshihiro Suzuki , Noboru Shibata
发明人： Yuji Nagai , Taku Kato , Tatsuyuki Matsushita , Toshihiro Suzuki , Noboru Shibata
IPC分类号： H04L9/32
CPC分类号： H04L9/0816 , G11B20/00362 , G11B20/00427 , H04L9/0822 , H04L9/0833 , H04L9/0897 , H04L9/32 , H04L2209/601
摘要： According to one embodiment, a device includes first and second data generator, a one-way function processor, and a data output interface. The first data generator generates a second key by encrypting a host constant with a first key in AES operation. The second data generator generates a session key by encrypting a random number with a second key in AES operation. The one-way function processor generates authentication information by processing secret identification information with the session key in one-way function operation. The data output interface outputs the encrypted secret identification information, a family key block, and the authentication information to outside of the device.
摘要翻译：根据一个实施例，设备包括第一和第二数据生成器，单向功能处理器和数据输出接口。第一个数据生成器通过AES操作中的第一个密钥加密主机常数来生成第二个密钥。第二数据生成器通过在AES操作中用第二密钥加密随机数生成会话密钥。单向功能处理器通过在单向功能操作中通过会话密钥处理秘密识别信息来生成认证信息。数据输出接口将加密的秘密识别信息，家庭密钥块和认证信息输出到设备外部。

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