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1. 发明授权

US06438692B1 Copy protection apparatus and information recording medium used in this copy protection apparatus 有权
公开(公告)号：US06438692B1
公开(公告)日：2002-08-20
申请号：US09934762
申请日：2001-08-23
申请人： Taku Kato , Takehisa Kato , Kenjiro Endoh , Hisashi Yamada , Naoki Endoh
发明人： Taku Kato , Takehisa Kato , Kenjiro Endoh , Hisashi Yamada , Naoki Endoh
IPC分类号： H04L932
摘要： This invention protects the unauthorized copy of multimedia data, recorded on an information recording medium, by using electronic watermark information and key information. The electronic watermark information embedded in the multimedia data is extracted by an electronic watermark extraction unit on the decryption system side. A disk key is obtained using the electronic watermark information and a part master key. The multimedia data is decrypted using the resultant disk key.

2. 发明授权

US06301663B1 Copy protection apparatus and information recording medium used in this copy protection apparatus 失效
标题翻译：该复印保护装置中使用的复印保护装置和信息记录介质
公开(公告)号：US06301663B1
公开(公告)日：2001-10-09
申请号：US09195918
申请日：1998-11-19
申请人： Taku Kato , Takehisa Kato , Kenjiro Endoh , Hisashi Yamada , Naoki Endoh
发明人： Taku Kato , Takehisa Kato , Kenjiro Endoh , Hisashi Yamada , Naoki Endoh
IPC分类号： H04L900
CPC分类号： G11B20/0021 , G06T1/0021 , G06T2201/0064 , G11B20/00086 , G11B20/00253 , G11B20/00884
摘要： This invention protects the unauthorized copy of multimedia data, recorded on an information recording medium, by using electronic watermark information and key information. The electronic watermark information embedded in the multimedia data is extracted by an electronic watermark extraction unit on the decryption system side. A disk key is obtained using the electronic watermark information and a part master key. The multimedia data is decrypted using the resultant disk key.
摘要翻译：本发明通过使用电子水印信息和密钥信息来保护记录在信息记录介质上的多媒体数据的未授权拷贝。嵌入在多媒体数据中的电子水印信息由解密系统侧的电子水印提取单元提取。使用电子水印信息和部分主密钥获得磁盘密钥。使用所得到的磁盘密钥对多媒体数据进行解密。

3. 发明授权

US06556679B1 Copy-guard system and information recording medium used in the same system 失效
标题翻译：复制保护系统和信息记录介质在同一系统中使用
公开(公告)号：US06556679B1
公开(公告)日：2003-04-29
申请号：US09195914
申请日：1998-11-19
申请人： Takehisa Kato , Taku Katoh , Kenjiro Endoh , Hisashi Yamada , Naoki Endoh
发明人： Takehisa Kato , Taku Katoh , Kenjiro Endoh , Hisashi Yamada , Naoki Endoh
IPC分类号： H04N7167
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00166 , G11B20/18 , H04N5/913 , H04N5/945 , H04N2005/91328 , H04N2005/91364
摘要： In an embodiment, a copy-guard system is provided that includes a decoding section for decoding digital data, which is encoded and error-correction-coded, from an information recording medium in which key information encoded for the digital data is recorded, an encoded digital data acquisition section for acquiring digital data encoded by error-correcting the digital data decoded by the decoding section, a detection section for detecting an error position and an error symbol value of the encoded digital data, identification information detection section for detecting an identification information representing whether the information recording medium is original or copied and which is replaced with a part of the digital data encoded and error-correction-coded, based on the error position and the error symbol value detected by the detection section, a determination section for determining whether a copy of the information recording medium is protected, and a copy protection section.
摘要翻译：在一个实施例中，提供了一种复制保护系统，其包括：解码部分，用于从其中记录用于数字数据编码的密钥信息的信息记录介质对由数字数据进行编码和纠错编码的数字数据进行解码，数字数据获取部分，用于获取通过对由解码部分解码的数字数据进行纠错编码的数字数据，检测部分，用于检测编码数字数据的错误位置和误差符号值;识别信息检测部分，用于检测识别信息表示信息记录介质是原始还是复制的，并且基于由检测部分检测的错误位置和错误符号值，被编码和纠错编码的数字数据的一部分替代，确定部分，用于确定信息记录介质的副本是否被保护，以及复制保护部分。

4. 发明授权

US6009174A Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded 失效
公开(公告)号：US6009174A
公开(公告)日：1999-12-28
申请号：US957910
申请日：1997-10-27
申请人： Makoto Tatebayashi , Motoji Ohmori , Takehisa Kato , Naoki Endoh , Koichi Hirayama
发明人： Makoto Tatebayashi , Motoji Ohmori , Takehisa Kato , Naoki Endoh , Koichi Hirayama
IPC分类号： H04L9/08 , H04N7/167 , H04N21/6334 , H04L9/00 , H04L9/12 , H04L9/14
CPC分类号： H04N21/63345 , H04L9/0838 , H04L9/0891 , H04N7/1675
摘要： A transmission apparatus 100 includes a secret key storage unit 103 that stores three secret keys K1, K2 and K3, a secret key selection unit 104 that selects one secret key Ks from the secret keys, a message generation unit 106 for generating a message M used as a carrier for indicating a secret key, an encryption module 105 for generating a cryptogram Ca by encrypting the generated message M using the secret key Ks, an encryption module 107 for generating a cryptogram Cm by encrypting the message M using the message M itself as the secret key, and two transmission units 111 and 112 for transmitting the cryptograms Ca and Cm to the reception apparatus 200 to indicate the selected secret key Ks. The reception apparatus 200 includes a decryption module, such as 221, for generating decrypted data Mi by decrypting the cryptogram Ca using a secret key Ki out of the three secret keys, and a decryption module, such as 222, for generating decrypted data Mii by decrypting the cryptogram Cm using the decrypted data Mi, and authorizes that the secret key Ki has been selected when the decrypted data Mi matches the decrypted data Mii.

5. 发明授权

US6151394A Encrypted communication system that limits the damage caused when a secret key has been leaked 失效
标题翻译：加密通信系统，限制秘密密钥泄露时造成的损坏
公开(公告)号：US6151394A
公开(公告)日：2000-11-21
申请号：US940052
申请日：1997-09-30
申请人： Makoto Tatebayashi , Yoshihisa Fukushima , Takehisa Kato , Naoki Endoh , Koichi Hirayama
发明人： Makoto Tatebayashi , Yoshihisa Fukushima , Takehisa Kato , Naoki Endoh , Koichi Hirayama
IPC分类号： H04L9/08 , H04L9/00
CPC分类号： H04L9/0833 , H04L9/0822
摘要： In an encrypted transmission system composed of one transmission apparatus 10 and twenty-eight reception apparatuses A1-G4 that are classified into seven groups A-G, two secret key exclusively selected out of a total of fourteen secret keys are distributed beforehand to each group. The transmission apparatus 10 encrypts the same message M using one of the two secret keys distributed to each group and sends each group a message M encrypted with one of the group's secret keys. The reception apparatuses each decrypt the received cryptogram separately using each of the secret keys assigned to the of group to which each reception apparatus belongs, judge whether either of the two decryption results conforms to a predetermined rule, and specify the correct decryption result.
摘要翻译：在由分组为七组A-G的一个发送装置10和二十八个接收装置A1-G4组成的加密传输系统中，预先向每个组分发从总共14个秘密密钥中唯一选择的两个秘密密钥。发送装置10使用分配给每个组的两个秘密密钥中的一个对相同的消息M进行加密，并且向每个组发送用该组的秘密密钥之一加密的消息M. 接收装置分别使用分配给每个接收装置所属的组的每个秘密密钥来分别接收密码，判断两个解密结果是否符合预定规则，并指定正确的解密结果。

6. 发明申请

US20080279383A1 METHOD AND APPARATUS OF ENCIPHERING AND DECIPHERING DATA USING MULTIPLE KEYS 审中-公开
标题翻译：使用多种方法进行编码和分解数据的方法和装置
公开(公告)号：US20080279383A1
公开(公告)日：2008-11-13
申请号：US12175920
申请日：2008-07-18
申请人： Takehisa Kato , Naoki Endoh , Hiroaki Unno , Tadashi Kojima , Koichi Hirayama
发明人： Takehisa Kato , Naoki Endoh , Hiroaki Unno , Tadashi Kojima , Koichi Hirayama
IPC分类号： H04L9/06
CPC分类号： G11B23/284 , G11B20/00086 , G11B20/0021 , G11B20/00253 , G11B20/00557 , G11B23/28 , H04N5/913 , H04N2005/91364
摘要： On a recording medium, first information obtained by enciphering data with the first key and second information obtained by enciphering the first key with each of the predetermined second keys are recorded. A deciphering method is characterized by comprising the steps of inputting the first and second information, deciphering the first key using at least one of the second keys, determining by a specific method that the obtained first key is correct, and then deciphering the data using the first key to obtain the data.
摘要翻译：在记录介质上记录通过用第一密钥加密数据而获得的第一信息和通过用预定的第二密钥加密第一密钥获得的第二信息。解密方法的特征在于包括以下步骤：输入第一和第二信息，使用第二密钥中的至少一个解密第一密钥，通过特定方法确定所获得的第一密钥是正确的，然后使用获取数据的第一个关键。

7. 发明授权

US06751321B1 Digital data reproduction device 失效
标题翻译：数字数据再现装置
公开(公告)号：US06751321B1
公开(公告)日：2004-06-15
申请号：US09064985
申请日：1998-04-23
申请人： Takehisa Kato , Naoki Endoh , Kenji Shimoda
发明人： Takehisa Kato , Naoki Endoh , Kenji Shimoda
IPC分类号： H04L900
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00224 , H04N5/765 , H04N5/775 , H04N5/913 , H04N9/8042 , H04N2005/91364
摘要： A source of MPEG2 video data is connected with a dedicated AV device or personal computer by means of an IEEE 1394 interface. A transmission unit in the source has an IEEE 1394 encryption unit and a sending I/F unit. A reception unit varies between the dedicated AV unit and the personal computer. In the reception unit of the dedicated AV device, a receiving I/F unit and a decryptor are integrally incorporated into one semiconductor chip and an MPEG2 decoder is incorporated into one semiconductor chip. In the reception unit of the personal computer, the receiving I/F unit is formed of one semiconductor chip, and the decryptor connected to the I/F unit through a bus, and the MPEG2 decoder are formed of one semiconductor chip. Thus, data before decryption will not appear on the bus, which prevents MPEG2 video data from being taken out of the computer for illegal copying purposes. In addition, the reception unit is made to have a different physical configuration depending on whether it is to be mounted in the dedicated AV device or the personal computer. This will prevent the reception unit (including the decryptor) of the dedicated AV device from being connected in the personal computer in place of its associated reception unit (excluding the decryptor).
摘要翻译： MPEG2视频数据源通过IEEE 1394接口与专用AV设备或个人计算机连接。源中的传输单元具有IEEE 1394加密单元和发送I / F单元。接收单元在专用AV单元和个人计算机之间变化。在专用AV设备的接收单元中，一个接收I / F单元和解密器被整合在一个半导体芯片中，并且MPEG2解码器被并入到一个半导体芯片中。在个人计算机的接收单元中，接收I / F单元由一个半导体芯片形成，并且解码器通过总线连接到I / F单元，并且MPEG2解码器由一个半导体芯片形成。因此，解密之后的数据不会出现在总线上，这样就不会将MPEG2视频数据从计算机中取出来进行非法复制。此外，接收单元根据是否要安装在专用AV设备或个人计算机中而具有不同的物理配置。这将防止专用AV设备的接收单元（包括解密器）代替其关联的接收单元（不包括解密器）连接在个人计算机中。

8. 发明授权

US5984174A Method of printing bar codes on pieces to deliver, and method and system for encoding and decoding bar codes 失效
标题翻译：条码打印方法，以及条码编码和解码方法和系统
公开(公告)号：US5984174A
公开(公告)日：1999-11-16
申请号：US733640
申请日：1996-10-17
申请人： Takehisa Kato , Naoki Endoh
发明人： Takehisa Kato , Naoki Endoh
IPC分类号： G07B17/00 , G06F15/20
CPC分类号： G07B17/00508 , G07B2017/00588 , G07B2017/00596 , G07B2017/00725 , G07B2017/00951
摘要： A method of printing bar codes, comprising the steps of reading destination data from a piece to be delivered, on which the destination data is provided and which has at least first to third regions, printing a bar code representing the destination data on the piece, and printing on the piece a bar code representing sender's data when the piece is found to be a destination-unknown one.
摘要翻译：一种打印条形码的方法，包括以下步骤：从要传送的片段中读取目的地数据，其上提供目的地数据，并且至少具有第一至第三区域，将表示目的地数据的条形码打印在片段上，并且当该片被发现是目的地未知的时，在该片上打印表示发送者的数据的条形码。

9. 发明授权

US07433474B2 Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys 有权
标题翻译：使用其他密钥加密和解密的密钥对数据进行加密和解密的方法和装置
公开(公告)号：US07433474B2
公开(公告)日：2008-10-07
申请号：US10035311
申请日：2002-01-04
申请人： Takehisa Kato , Naoki Endoh , Hiroaki Unno , Tadashi Kojima , Koichi Hirayama
发明人： Takehisa Kato , Naoki Endoh , Hiroaki Unno , Tadashi Kojima , Koichi Hirayama
IPC分类号： H04L9/00
CPC分类号： G11B23/284 , G11B20/00086 , G11B20/0021 , G11B20/00253 , G11B20/00557 , G11B23/28 , H04N5/913 , H04N2005/91364
摘要： On a recording medium, first information obtained by enciphering data with the first key and second information obtained by enciphering the first key with each of the predetermined second keys are recorded. A deciphering method is characterized by comprising the steps of inputting the first and second information, deciphering the first key using at least one of the second keys, determining by a specific method that the obtained first key is correct, and then deciphering the data using the first key to obtain the data.
摘要翻译：在记录介质上记录通过用第一密钥加密数据而获得的第一信息和通过用预定的第二密钥加密第一密钥获得的第二信息。解密方法的特征在于包括以下步骤：输入第一和第二信息，使用第二密钥中的至少一个解密第一密钥，通过特定方法确定所获得的第一密钥是正确的，然后使用获取数据的第一个关键。

10. 发明授权

US06347145B2 Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys 失效
公开(公告)号：US06347145B2
公开(公告)日：2002-02-12
申请号：US08883337
申请日：1997-06-26
申请人： Takehisa Kato , Naoki Endoh , Hiroaki Unno , Tadashi Kojima , Koichi Hirayama
发明人： Takehisa Kato , Naoki Endoh , Hiroaki Unno , Tadashi Kojima , Koichi Hirayama
IPC分类号： H04L900
CPC分类号： G11B23/284 , G11B20/00086 , G11B20/0021 , G11B20/00253 , G11B20/00557 , G11B23/28 , H04N5/913 , H04N2005/91364
摘要： On a recording medium, first information obtained by enciphering data with the first key and second information obtained by enciphering the first key with each of the predetermined second keys are recorded. A deciphering method is characterized by comprising the steps of inputting the first and second information, deciphering the first key using at least one of the second keys, determining by a specific method that the obtained first key is correct, and then deciphering the data using the first key to obtain the data.

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