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73 条记录 (耗时 0.026 秒)

    Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information
    33.
    发明授权
    Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information 失效
    用于限制数字信息复制的方法和装置，以及用于记录数字信息的装置

    公开(公告)号：US06990584B1

    公开(公告)日：2006-01-24

    申请号：US09453719

    申请日：1999-12-03

    申请人： Hiroshi Yoshiura ,  Hiroyuki Kimura ,  Akira Ogino ,  Yoshiaki Moriyama ,  Kazumi Sugaya

    发明人： Hiroshi Yoshiura ,  Hiroyuki Kimura ,  Akira Ogino ,  Yoshiaki Moriyama ,  Kazumi Sugaya

    IPC分类号： H04L9/00 ,  G06F11/30 ,  H04N7/167

    CPC分类号： G06T1/0071 ,  G06T2201/0064 ,  H04N5/913 ,  H04N2005/91328 ,  H04N2005/91335 ,  H04N2005/9135

    摘要： An apparatus for restricting a copy of digital information is provided with a detecting device for detecting a first watermark, which is buried in the digital information and comprises a first signal generated on the basis of a first rule. A burying device buries a second watermark, which comprises a second signal generated on the basis of a second rule and having a structure different from that of the first signal, into the digital information if the first watermark is detected by the detecting device. A recording apparatus is provided with: an inputting device for inputting the digital information; the above mentioned copy restricting apparatus; and a recording device for recording the digital information in which the second watermark is buried by the burying device.

    摘要翻译： 一种用于限制数字信息的拷贝的装置设置有用于检测第一水印的检测装置，该第一水印被埋在数字信息中，并且包括基于第一规则生成的第一信号。 如果检测装置检测到第一水印，则掩埋装置将第二水印埋入数字信息中，所述第二水印包括基于第二规则生成的具有不同于第一信号的结构的第二信号。 记录装置具有：用于输入数字信息的输入装置; 上述复制限制装置; 以及用于记录第二水印被掩埋装置掩埋的数字信息的记录装置。

    Method of and apparatus for compressing and decompressing data and data processing apparatus and network system using the same
    35.
    发明授权
    Method of and apparatus for compressing and decompressing data and data processing apparatus and network system using the same 失效
    用于压缩和解压缩数据和数据处理装置的方法和装置以及使用其的网络系统

    公开(公告)号：US5872530A

    公开(公告)日：1999-02-16

    申请号：US790063

    申请日：1997-01-28

    申请人： Seiichi Domyo ,  Hiroshi Yoshiura ,  Yoshiaki Hattori ,  Yutaka Otsu ,  Hiromasa Murakami

    发明人： Seiichi Domyo ,  Hiroshi Yoshiura ,  Yoshiaki Hattori ,  Yutaka Otsu ,  Hiromasa Murakami

    IPC分类号： H03M7/40 ,  G06F5/00 ,  H03M7/30 ,  H03M7/00

    CPC分类号： H03M7/3088

    摘要： In a data compression method using dictionaries, there are adopted a dynamic dictionary and a static dictionary to prevent the deterioration in the data compression ratio in the leading portion of the input data which cannot be efficiently compressed using the dynamic dictionary. Moreover, the configuration removes the disadvantage of the deterioration in the data compression ratio because character strings having a low appearance frequency occupy a large portion of the dictionary. Data to be compressed is inputted via an input unit to be decomposed into input bit strings 202. Using the input bit string as a retrieval key, a bit string retrieval is conducted through the static dictionary by a decision unit and a reference unit. According to a result from comparison between the input bit string and a bit string of the static dictionary and a result from the retrieval by a retrieving unit through the dynamic dictionary, whether or not the input bit string is to be registered to the dynamic dictionary is determined. For registration of the input bit string, an index is added thereto by a register unit before the registration. The input bit string or an index matching the string is outputted as compressed data.

    摘要翻译： 在使用字典的数据压缩方法中，采用动态字典和静态字典，以防止使用动态字典无法有效压缩的输入数据的前导部分中的数据压缩比的恶化。 此外，由于具有低出现频率的字符串占据了字典的大部分，因此该配置消除了数据压缩率恶化的缺点。 要被压缩的数据经由输入单元输入以被分解为输入位串202.使用输入位串作为检索关键字，通过决定单元和参考单元通过静态字典进行位串检索。 根据输入比特串与静态词典的比特串之间的比较结果，以及通过动态词典由检索单元检索的结果，输入比特串是否要注册到动态词典是 决心。 为了注册输入位串，在注册之前，通过寄存器单元向其添加索引。 输入位串或匹配字符串的索引作为压缩数据输出。

    ELECTRONIC DOCUMENT AUTHENTICITY ASSURANCE METHOD AND ELECTRONIC DOCUMENT DISCLOSURE SYSTEM
    38.
    发明申请
    ELECTRONIC DOCUMENT AUTHENTICITY ASSURANCE METHOD AND ELECTRONIC DOCUMENT DISCLOSURE SYSTEM 审中-公开
    电子文件认证保证方法和电子文件公开系统

    公开(公告)号：US20090193259A1

    公开(公告)日：2009-07-30

    申请号：US12416402

    申请日：2009-04-01

    申请人： Kunihiko Miyazaki ,  Mitsuru Iwamura ,  Tsutomu Matsumoto ,  Ryoichi Sasaki ,  Hiroshi Yoshiura ,  Hirokazu Aoshima ,  Hideo Noyama ,  Seiichi Susaki ,  Takeshi Matsuki

    发明人： Kunihiko Miyazaki ,  Mitsuru Iwamura ,  Tsutomu Matsumoto ,  Ryoichi Sasaki ,  Hiroshi Yoshiura ,  Hirokazu Aoshima ,  Hideo Noyama ,  Seiichi Susaki ,  Takeshi Matsuki

    IPC分类号： H04L9/00

    CPC分类号： G06F21/64

    摘要： An electronic document authenticity assurance technique and an information disclosure system both of which can compatibly realize the assurance of the authenticity of disclosure documents and the deletion of information inappropriate for disclosure. An electronic document is divided into constituent elements and an electronic signature is affixed to an arbitrary subset of a set including all the constituent elements. Otherwise, an electronic signature is affixed to data obtained by binding each of the constituent elements to information specifying the relationship between a respective one of the constituent elements and the structure of the electronic document. Otherwise, the hash values of the respective constituent elements are calculated and an electronic signature is affixed to data obtained by binding the calculated hash values together. Otherwise, random numbers generated for the respective constituent elements are bound together, then the hash values of the respective random-numbered constituent elements are calculated, and then an electronic signature is affixed to data obtained by binding the calculated hash values together.

    摘要翻译： 一种电子文件真实性保证技术和信息披露制度，可以兼容地实现披露文件的真实性的保证和删除不适合披露的信息。 电子文档被分成组成元件，并且电子签名被附加到包括所有组成元素的集合的任意子集中。 否则，电子签名附加到通过将每个组成元件绑定到指定组成元件中的相应一个和电子文档的结构之间的关系的信息而获得的数据。 否则，计算各组成要素的哈希值，并将电子签名附加到通过将所计算的散列值结合在一起而获得的数据。 否则，为各构成要素生成的随机数被绑定在一起，然后计算各随机编号的构成要素的哈希值，然后将电子签名附加到通过将计算出的哈希值结合在一起而获得的数据。

    Method for verifying a digital signature
    39.
    发明授权
    Method for verifying a digital signature 有权
    验证数字签名的方法

    公开(公告)号：US07441115B2

    公开(公告)日：2008-10-21

    申请号：US10620808

    申请日：2003-07-17

    申请人： Kunihiko Miyazaki ,  Narihiro Omoto ,  Shinji Itoh ,  Kouichi Tanimoto ,  Hiroshi Yoshiura

    发明人： Kunihiko Miyazaki ,  Narihiro Omoto ,  Shinji Itoh ,  Kouichi Tanimoto ,  Hiroshi Yoshiura

    IPC分类号： H04L9/00

    CPC分类号： H04L9/3247 ,  H04L2209/38

    摘要： The invention provides a method for verification having a structure that reflects reliability of a signature history properly for a hysteresis signature used for verification based on the signature history, and provides a method for arbitration and an arbitrator apparatus that solve a dispute on correctness of a signature based on the method for verification. Furthermore, the invention provides a method for managing history that mitigates the signature history management burden on a signer. Reliability is set on a signature forming record that is a component of a signature history, reliability of the signature history is calculated based on the set reliability, and the calculated reliability is output as reliability of a verification result. The invention provides a method for verification having a structure that reflects the reliability of a signature history properly and a method for arbitration and an arbitrator apparatus that solve a dispute on correctness of a signature. Furthermore, providing a signature history storage service apparatus mitigates the signature history storage burden on a signer.

    摘要翻译： 本发明提供了一种验证方法，其具有基于签名历史适当地反映用于验证的滞后签名的签名历史的可靠性的结构，并且提供了一种解决签名正确性争议的仲裁方法和仲裁器装置 基于验证方法。 此外，本发明提供了一种用于管理历史的方法，其减轻了签名者的签名历史管理负担。 可靠性设置在作为签名历史的组成部分的签名形成记录上，基于设置的可靠性计算签名历史的可靠性，并且计算的可靠性作为验证结果的可靠性输出。 本发明提供了一种验证方法，其具有能够正确地反映签名历史的可靠性的结构和用于仲裁的方法以及解决签名正确性的争议的仲裁器装置。 此外，提供签名历史存储服务装置减轻签名者的签名历史存储负担。

    Method and apparatus for temporarily giving copy permission for reproducing digital signals
    40.
    发明授权
    Method and apparatus for temporarily giving copy permission for reproducing digital signals 有权
    暂时给予复制数字信号复制许可的方法和装置

    公开(公告)号：US07151888B2

    公开(公告)日：2006-12-19

    申请号：US09839694

    申请日：2001-04-19

    申请人： Tooru Matsumura ,  Hiroshi Yoshiura ,  Hiroo Okamoto ,  Hiroyuki Kimura

    发明人： Tooru Matsumura ,  Hiroshi Yoshiura ,  Hiroo Okamoto ,  Hiroyuki Kimura

    IPC分类号： H04N5/76

    CPC分类号： G11B20/00746 ,  G11B20/00086 ,  G11B20/0084

    摘要： The digital signal recording/reproducing apparatus inputs a digital signal having a control flag as to a temporary copy permission, and records the digital signal temporarily into a recording medium in accordance with conditions in the control flag, then reproducing the digital signal temporarily from the recording medium in accordance with the conditions in the control flag. The recording/reproducing of the temporary copy is permitted, depending on the following conditions: The recording medium's type, the re-producing point-in-time, the reproducing time-period, and the reproducing frequency. With this method employed, even in a program permitting no recording, the temporary recording/reproducing is permitted under a condition of being limited to the time-shift recording on the receiving side.

    摘要翻译： 数字信号记录/再现装置输入具有临时复制许可的控制标志的数字信号，并根据控制标志的条件将数字信号临时记录到记录介质中，然后从记录中临时再现数字信号 介质按照控制标志的条件。 根据以下条件允许临时副本的记录/再现：记录介质的类型，重新产生时间点，再现时间段和再现频率。 采用这种方法，即使在不允许记录的程序中，在被限制在接收侧的时移记录的条件下允许临时记录/再现。