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公开(公告)号：JP2002063763A
公开(公告)日：2002-02-28
申请号：JP2000391976
申请日：2000-12-25
Applicant: SONY CORP
Inventor： ASANO TOMOYUKI , OSAWA YOSHITOMO , OISHI TAKEO , TAKI RYUTA , ISHIGURO RYUJI , MITSUZAWA ATSUSHI
IPC: G06F12/14 , G06F21/24 , G09C1/00 , G11B20/00 , G11B20/10 , G11B27/00 , H04L9/08 , H04L9/32 , H04N5/91
Abstract: PROBLEM TO BE SOLVED: To limit recording and reproducing using a master key of old generation by strictly managing a master key for generation controls. SOLUTION: When reproduction is impossible because the generation of a master key which a reproducing apparatus holds is older than a key used at recording of data, and when recording is impossible because the generation of a master key which a recording apparatus holds is older than a key necessary for recording on a recording medium, a user is prompted to update the master key, and then reproducing or recording processing is enabled by obtaining a necessary master key. The updated master key is distributed by using transmission media such as a recording medium, network, IC card, and telephone line, and for example, by using a tree type key distribution configuration with a form which can be processed only by a specified device.
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公开(公告)号：JP2001352322A
公开(公告)日：2001-12-21
申请号：JP2000243205
申请日：2000-08-10
Applicant: SONY CORP
Inventor： ASANO TOMOYUKI , OSAWA YOSHITOMO , ISHIGURO RYUJI , MITSUZAWA ATSUSHI , OISHI TAKEO
Abstract: PROBLEM TO BE SOLVED: To attain efficient key revision processing by executing key distribution through an encryption key distributing configuration adopting a tree structure. SOLUTION: A revision state of a master key and a media key employing a key distribution configuration adopting a tree structure is transmitted with a key revision block(KRB). The KRB is configured to allow a device being a leaf of a tree to store a leaf key and a limited node key, and a specific effective revision block(EKB) is generated for a group specified by a specific node and distributed thereto so as to limit devices that can be revised. Devices not belonging to the group cannot be decoded and the distribution security of the keys can be ensured. A configuration of distributing a revised master key by the KRB is realized especially in a system using a master key whose generation is managed.
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公开(公告)号：JP2010272055A
公开(公告)日：2010-12-02
申请号：JP2009125206
申请日：2009-05-25
Inventor： MITSUZAWA ATSUSHI , MATSUYAMA YUJI , KAWAI TOSHIHIKO
IPC: G06F9/46
CPC classification number: G06F9/45558 , G06F9/4856 , G06F2009/4557 , Y02D10/24 , Y02D10/32
Abstract: PROBLEM TO BE SOLVED: To efficiently execute a program before and after migration of the program. SOLUTION: A virtual machine 13 in a memory 12A connected to a CPU 11A with a command set A mounted thereon is migrated to a memory 12B connected to a CPU 11B with a command set B mounted thereon. A command common to the command set A and the command set B is executed therein by the capability of the CPU 11B. A command that exists not in the command set B but in the command set A is executed by emulation by a command emulator 15. The present invention is applicable to a computer with a plurality of CPUs mounted thereon, for example. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 要解决的问题：在程序迁移之前和之后有效执行程序。 解决方案：连接到其上安装有命令集A的CPU 11A的存储器12A中的虚拟机13被迁移到连接到CPU 11B的存储器12B中，其中安装有命令集B. 通过CPU 11B的能力，执行命令集A和命令集B共同的命令。 存在于命令集B中但命令集A中的命令由命令仿真器15进行仿真来执行。本发明可应用于例如安装有多个CPU的计算机。 版权所有（C）2011，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2006109126A
公开(公告)日：2006-04-20
申请号：JP2004293616
申请日：2004-10-06
Inventor： NAGAMATSU TATSUO , SHIMIZU KUNITOSHI , TERANISHI TSUTOMU , OKUDA HISAO , KAWAGUCHI HIROSHI , MITSUZAWA ATSUSHI
IPC: H04N5/91 , G11B27/034 , G11B27/10
CPC classification number: H04H60/48 , G06K9/00711
Abstract: PROBLEM TO BE SOLVED: To enable correctly segmenting commercials from the entire content in which programs and commercials coexist. SOLUTION: The image of the logo of the sponsor company of a commercial displayed at a predetermined commercial timing and the start position and end position of the commercial using the timing of logo display as a reference are described on a pattern file prepared for each of commercials. When an image including the image of logo described in the pattern file is detected at a position P Logo , the start position of the commercial is specified as a position P S , and the end position is specified as a position P E on the basis of the start position and end position of the commercial described in the pattern file. This apparatus is applicable to a personal computer or the like for processing television programs. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：使程序和广告共享的整个内容能够正确地分割广告。
解决方案：在以预定的商业时间显示的商业广告公司的标志图像和商标的开始位置和结束位置使用徽标显示的定时作为参考来描述在为 每个广告。 当在位置P
标识中检测到包含在图案文件中描述的徽标的图像的图像时，将广告的开始位置指定为位置P S ，并且 基于图案文件中描述的商品的开始位置和结束位置将结束位置指定为位置P E 。 该装置适用于处理电视节目的个人计算机等。 版权所有（C）2006，JPO＆NCIPI -
55.发明专利
公开(公告)号：JP2002123429A
公开(公告)日：2002-04-26
申请号：JP2001187834
申请日：2001-06-21
Applicant: SONY CORP
Inventor： ASANO TOMOYUKI , OSAWA YOSHITOMO , ISHIGURO RYUJI , MITSUZAWA ATSUSHI , OISHI TAKEO
Abstract: PROBLEM TO BE SOLVED: To provide an information recording and reproducing device, which improves efficiency in processing on a key renewal block (KRB) receiving side by performing the distribution of a key by KRB distribution as a key distribution configuration in a tree structure. SOLUTION: A key (such as master key, media key or contents key) is transmitted by the key distribution configuration in the tree structure together with a KRB. After the recording and reproducing device calculates and acquires the key of a certain recording medium on the basis of the received KRB, the acquired key is enciphered while using a cryptographic key peculiar for that recording and reproducing device such as leaf key, for example, and stored on the recording medium or memory of the recording and reproducing device. Therefore, when next using that recording medium or contents, the recording and reproducing device can calculate the key only by once deciphering that cryptographic key and the computational complexity in KRB deciphering processing or the like required for accessing the recording medium or utilizing the contents from the recording and reproducing device can be decreased.
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公开(公告)号：JP2002077131A
公开(公告)日：2002-03-15
申请号：JP2000317803
申请日：2000-10-18
Applicant: SONY CORP
Inventor： ISHIGURO RYUJI , OSAWA YOSHITOMO , OISHI TAKEO , ASANO TOMOYUKI , MITSUZAWA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide an information processing system and method which can reduce the amount of data of an effective key block (EKB) which is used for an encryption key constitution of a tree structure. SOLUTION: A two-branched or multi-branched tree which is simplified by applying a terminal mode or a leaf capable of decoding to the lowest stage is reconstructed, and the effective key block (EKB) which is used for key distribution constitution of tree structure is formed on the basis of only the key corresponding to the node or the leaf of reconstruction hierarchy tree. Further, a tag as identification data of tree position of an encryption key stored in the EKB is stored. The tag is so constituted that data for not only identifying positions but also judging whether encryption key data exist in the EKB are stored. The amount of data of the EKB can be reduced remarkably and decoding process in a device is also simplified.
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公开(公告)号：JP2002009754A
公开(公告)日：2002-01-11
申请号：JP2000186175
申请日：2000-06-21
Applicant: SONY CORP
Inventor： ASANO TOMOYUKI , OSAWA YOSHITOMO , ISHIGURO RYUJI , MITSUZAWA ATSUSHI , OISHI TAKEO
Abstract: PROBLEM TO BE SOLVED: To provide an information recording and reproducing device and its method that selectively use a key revision block(KRB) of the newest version so as to encrypt contents and store them to a recording medium. SOLUTION: Keys with different versions can be stored on a recording medium, and when a recording and reproducing device accesses the recording medium, the processing of detecting a new key and storing it to the recording medium, the processing of storing the newest KRB detected from the recording medium to a memory of the recording and reproducing device itself, and the processing of deleting unnecessary KRBs from the recording medium are executed. The recording and reproducing device having a KRB newer than the KRBs in the recording medium records the new KRB to the recording medium even when no data are recorded. Through the configuration above, the migration speed of the new KRB is increased and new KRBs are stored one after another to the recording and reproducing device so as to promote revision of the KRB used for the encryption processing.
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公开(公告)号：JP2001352321A
公开(公告)日：2001-12-21
申请号：JP2000179695
申请日：2000-06-15
Applicant: SONY CORP
Inventor： ISHIGURO RYUJI , OSAWA YOSHITOMO , OISHI TAKEO , ASANO TOMOYUKI , MITSUZAWA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To realize an information processing system and its method that execute distribution of various keys or data through an encryption key configuration adopting a tree structure so as to attain efficient and secure data distribution. SOLUTION: A contents key, an authentication key, and program data or the like adopting an encryption key configuration employing a tree structure are transmitted with an effective key block(EKB). The EKB is configured to allow a device being a leaf of a tree to store a leaf key and a limited node key, and a specific effective key block(EKB) is generated for a group specified by a specific node and distributed thereto so as to limit devices that can be updated. Devices not belonging to the group cannot be decoded and the distribution security of the keys or the like can be ensured.
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