Patents by Inventor Masayuki Numao

Masayuki Numao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8713691
    Abstract: A system which implements a method for providing attribute data. A request is received from a user device via a network for a virtual ID token relating to attribute information pertaining to a subscriber associated with the user device. A data record including L attributes of the subscriber is read from a database, L being at least 2. The data record is provided to the user device via the network. A selection of M attributes of the L attributes is received from the user device via the network, M being less than L. A virtual record including the M attributes selected from the data record is generated, the virtual record including a virtual ID (VID) for identifying the virtual record. The generated virtual record is stored in the database. The virtual ID token is provided to the user device via the network, wherein the virtual ID token includes the VID.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: April 29, 2014
    Assignee: International Business Machines Corporation
    Inventors: Yoshinobu Ishigaki, Masayuki Numao, Madoka Yuriyama, Yuji Watanabe
  • Patent number: 8655696
    Abstract: A system includes a structure information obtaining unit which obtains structure information containing information on components of a development target in a project and on dependency relationships between the components, the structure information described, e.g., in SysML, a work item determining unit which determines work items and a work execution order based on the structure information obtained by the structure information obtaining unit; a detailed item determining unit; a date scheduling unit and a WBS storage which manages the determined work items and work execution order as work schedule definition information. The work item determining unit determines a work item related to a leaf component, which is a component not including any other component, and determines, in a case where all of the multiple components included in a single predetermined component are leaf components, a work item related to a coupling relationship between the leaf components.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: February 18, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hiroyuki Akatsu, Atsushi Fukuda, Takashi Nerome, Masayuki Numao
  • Publication number: 20140006445
    Abstract: A database search system ensures the privacy of a search request and the security of a database with high processing efficiency. The system comprises a database server residing on a network that stores predetermined data, and a client terminal issuing to the database server a search request for inquiring for desired data while keeping the desired data secret. The database server further comprises: a database storing predetermined data; and a search response message generation unit for receiving through a network the data search request in which data to be searched for is kept secret, searching the database by a predetermined computation based on the search request and a list of the data stored in the database while a data item involved with the search request is kept secret, and generating a response to the search request.
    Type: Application
    Filed: September 3, 2013
    Publication date: January 2, 2014
    Applicant: International Business Machines Corporation
    Inventors: Masayuki NUMAO, Yuji WATANABE
  • Patent number: 8618905
    Abstract: The present invention provides an apparatus for verifying the authority of an owner, in terms of an identifier of a product, the first verification information for verifying the authority held at a terminal for an owner with the authority involving the product, and the second verification information for verifying the authority concerning the identifier of the product stored in a product database. The apparatus comprises means for receiving the identifier and the first verification information, means for acquiring the second verification information from the product DB, and means for determining whether or not there is the authority from the first verification information and the second verification information. A hash value acquired from a one-way hash function is employed as a verification key of the verification information.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: December 31, 2013
    Assignee: International Business Machines Corporation
    Inventors: Masayuki Numao, Yoshinobu Ishigaki, Yuji Watanabe
  • Patent number: 8538937
    Abstract: A database search system ensures the privacy of a search request and the security of a database with high processing efficiency. The system comprises a database server residing on a network that stores predetermined data, and a client terminal issuing to the database server a search request for inquiring for desired data while keeping the desired data secret. The database server further comprises: a database storing predetermined data; and a search response message generation unit for receiving through a network the data search request in which data to be searched for is kept secret, searching the database by a predetermined computation based on the search request and a list of the data stored in the database while a data item involved with the search request is kept secret, and generating a response to the search request.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: September 17, 2013
    Assignee: International Business Machines Corporation
    Inventors: Masayuki Numao, Yuji Watanabe
  • Patent number: 8386780
    Abstract: Cryptographic communication system including a sender terminal for encrypting and transmitting a message, a recipient terminal for receiving and decrypting the encrypted message, an agent terminal for decrypting the message in place of the recipient terminal, and a conversion server for supporting the agent terminal to decrypt the message. The sender terminal encrypts the message using a public key of the recipient terminal. Using a public key of the conversion server, a predetermined restricted condition, and a secret key for decryption of the message, the recipient terminal generates a delegation key allowing decryption of the message under the restricted condition and passes the delegation key to the agent terminal. The conversion server validates a power of the agent terminal to decrypt the message based on the information contained in the delegation key from the agent terminal. The agent terminal then decrypts the message with validation of the conversion server.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: February 26, 2013
    Assignee: International Business Machines Corporation
    Inventors: Yuji Watanabe, Masayuki Numao
  • Publication number: 20120117657
    Abstract: A system which implements a method for providing attribute data. A request is received from a user device via a network for a virtual ID token relating to attribute information pertaining to a subscriber associated with the user device. A data record including L attributes of the subscriber is read from a database, L being at least 2. The data record is provided to the user device via the network. A selection of M attributes of the L attributes is received from the user device via the network, M being less than L. A virtual record including the M attributes selected from the data record is generated, the virtual record including a virtual ID (VID) for identifying the virtual record. The generated virtual record is stored in the database. The virtual ID token is provided to the user device via the network, wherein the virtual ID token includes the VID.
    Type: Application
    Filed: January 4, 2012
    Publication date: May 10, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yoshinobu Ishigaki, Masayuki Numao, Madoka Yuriyama, Yuji Watanabe
  • Patent number: 8165913
    Abstract: A system for tracing a cause of a phenomenon occurring in products produced in a production process chain is provided. The system is provided with a storage unit for storing a virtual attribute in association with corresponding second products, a receiving unit for receiving information for specifying third products in which a phenomenon occurs, a correlation calculation unit for calculating a correlation coefficient between the third products specified by the information for specifying the third products and the group of the second products having a common virtual attribute, for every kind of second products used in the third products, and a cause identification unit for identifying the second products belonging to the kind of the second products for which a maximum correlation coefficient is calculated as the cause of the phenomenon.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: April 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Fumihiko Kitayama, Hirofumi Matsuzawa, Masayuki Numao
  • Patent number: 8122511
    Abstract: A method for providing attribute data. A request is received from a user device for a virtual ID token relating to attribute information pertaining to a subscriber associated with the user device. Responsive to the request for the virtual ID token, a data record is read from a database. The data record includes L attributes of the subscriber. L is at least 2. The data record is provided to the user device. A selection of M attributes of the L attributes is received from the user device. M is less than L. A virtual record including the M attributes selected from the data record is generated. The virtual record includes a virtual ID (VID) for identifying the virtual record. The generated virtual record is stored in the database. The virtual ID token is provided to the user device. The virtual ID token includes the VID.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: February 21, 2012
    Assignee: International Business Machines Corporation
    Inventors: Yoshinobu Ishigaki, Masayuki Numao, Madoka Yuriyama, Yuji Watanabe
  • Patent number: 8117456
    Abstract: A method, apparatus and system to ensure the security in the information exchange and to provide list matching with higher efficiency and practicality. In a particular embodiment, each of lists to be subject to list matching is represented as a polynomial having roots equivalent to the items of the list. Then, polynomials generated for the lists to be subject to list matching are added according to a distributed secret computation. A list containing an item equivalent to a root of a polynomial resulting from the addition is created and output as the list of a common item.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: February 14, 2012
    Assignee: International Business Machines Corporation
    Inventors: Masayuki Numao, Yuji Watanabe
  • Patent number: 7979712
    Abstract: A method, apparatus and system to ensure the security in the information exchange and to provide list matching with higher efficiency and practicality. In a particular embodiment, each of lists to be subject to list matching is represented as a polynomial having roots equivalent to the items of the list. Then, polynomials generated for the lists to be subject to list matching are added according to a distributed secret computation. A list containing an item equivalent to a root of a polynomial resulting from the addition is created and output as the list of a common item.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: July 12, 2011
    Assignee: International Business Machines Corporation
    Inventors: Masayuki Numao, Yuji Watanabe
  • Patent number: 7917513
    Abstract: The invention provides data processing, data control and information methods and systems for efficiently duplicating contents of a database in the data control system. An example of a data processing system includes: a cache unit acquiring, from a data control system which categorizes a plurality of data elements into a plurality of clusters and stores the plurality of clusters; a group-of-clusters update information acquisition unit for acquiring from the data control system group-of-clusters update information with respect to a group of clusters consisting of two or more clusters; a group-of-clusters update information computation unit for computing group-of-clusters update information with respect to the group of clusters based on two or more pieces of cluster update information; and an update judging unit for judging that a cached data element belonging to the group of clusters is the most updated one.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: March 29, 2011
    Assignee: International Business Machines Corporation
    Inventors: Yuji Watanabe, Takeo Yoshizawa, Masayuki Numao
  • Patent number: 7913093
    Abstract: A method and system for providing access to information on an article to which a tag is coupled. A local server reads the tag containing a virtual ID that includes an encryption of a bit string. The bit string includes an article ID containing a manufacturer ID. The local server is coupled to an ONS server, an ONS proxy server, and a PML server via a network. The local server sends to the ONS proxy server an ONS service request that includes the virtual ID and requests a network address of the PML server. The local server receives, from the ONS server, the network address of the PML server. The local server sends to the PML server, at the network address of the PML server, a PML information request that includes the virtual ID and requests article information. The local server receives, from the PML server, the article information.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: March 22, 2011
    Assignee: International Business Machines Corporation
    Inventors: Yoshinobu Ishigaki, Masayuki Numao, Yuji Watanabe, Madoka Yuriyama, Takeo Yoshizawa
  • Patent number: 7913089
    Abstract: An ID creating apparatus includes a derivative value creating unit for creating a derivative value, a user ID encrypting unit for creating encrypted ID by encrypting information including the user ID and the derivative value based on an encryption key, and a derivative ID creating unit for creating derivative ID based on the encrypted ID. An ID resolving apparatus includes an encrypted ID extracting unit for extracting the encrypted ID included in the derivative ID, an encrypted ID decrypting unit for decrypting the encrypted ID based on a decryption key corresponding to the encryption key and thereby creating decrypted ID, and an ID judging unit for determining that the derivative ID is created from the user ID when part of the decrypted ID coincides with information created based on the user ID.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: March 22, 2011
    Assignee: International Business Machines Corporation
    Inventors: Yuji Watanabe, Yoshinori Aoki, Masayuki Numao
  • Patent number: 7836312
    Abstract: A technique for acquiring information. In response to receiving a request to read data stored in a database, said data is read from said database. In response to receiving a request to deliver particular data among said read data at a point in time when said particular data is to be used, it is determined whether said delivery request satisfies predetermined criteria. Said particular data is delivered in response to determining that said delivery request satisfies said predetermined criteria.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: November 16, 2010
    Assignee: International Business Machines Corporation
    Inventors: Yoshinori Aoki, Keitaroh Dohmen, Masayuki Numao, Yuji Watanabe, Madoka Yuriyama
  • Patent number: 7769706
    Abstract: It is an object of the present invention to find out parts to be a highly possible cause of failure without searching all of part data of all of products. Dispersed parts data on a parts tree are sequentially accessed from a set of known failed products, and part attribute values each having a higher support in the faulty product are extracted. In this process, a subset of parts used in the faulty product is also obtained simultaneously. The part attribute values having higher supports and the subset of parts used in the faulty product are represented as a tree in which a parts type serves as a node. Next, an information gain of a rule that having the two part attribute values is a cause of failure is calculated on two part attribute values having higher supports on the tree of the parts type. This calculation is locally performed on a common parent part of two parts and parts having a certain information gain is outputted as a cause of failure.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: August 3, 2010
    Assignee: International Business Machines Corporation
    Inventors: Fumihiko Kitayama, Hirofumi Matsuzawa, Masayuki Numao, Madoka Yuriyama
  • Patent number: 7752161
    Abstract: An access management system includes an access administration apparatus which permits access to a database when the access request satisfies an access permission condition, and a policy determination apparatus which determines whether the access permission condition is satisfied by the access request; in which the access administration apparatus stores decision information containing a decision as to whether the access permission condition is satisfied, determines that the access request satisfies the access permission condition if the decision information has a predetermined inclusion relation with the access request, receives a decision as to whether the access permission condition is satisfied by the access request from the policy determination apparatus if it is determined that the decision information does not have the inclusion relation with the access request, and permits access to the database if it is determined that the access request satisfies the access permission condition.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: July 6, 2010
    Assignee: International Business Machines Coporation
    Inventors: Yuji Watanave, Masayuki Numao, Madoka Yuriyama, Keitaroh Dohmen
  • Patent number: 7657740
    Abstract: The present invention provides an apparatus for verifying the authority of an owner, in terms of an identifier of a product, the first verification information for verifying the authority held at a terminal for an owner with the authority involving the product, and the second verification information for verifying the authority concerning the identifier of the product stored in a product database. The apparatus comprises means for receiving the identifier and the first verification information, means for acquiring the second verification information from the product DB, and means for determining whether or not there is the authority from the first verification information and the second verification information. A hash value acquired from a one-way hash function is employed as a verification key of the verification information.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: February 2, 2010
    Assignee: International Business Machines Corporation
    Inventors: Masayuki Numao, Yoshinobu Ishigaki, Yuji Watanabe
  • Publication number: 20090327413
    Abstract: A method, apparatus and system to ensure the security in the information exchange and to provide list matching with higher efficiency and practicality. In a particular embodiment, each of lists to be subject to list matching is represented as a polynomial having roots equivalent to the items of the list. Then, polynomials generated for the lists to be subject to list matching are added according to a distributed secret computation. A list containing an item equivalent to a root of a polynomial resulting from the addition is created and output as the list of a common item.
    Type: Application
    Filed: August 5, 2009
    Publication date: December 31, 2009
    Inventors: Masayuki NUMAO, Yuji Watanabe
  • Publication number: 20090271354
    Abstract: It is an object of the present invention to find out parts to be a highly possible cause of failure without searching all of part data of all of products. Dispersed parts data on a parts tree are sequentially accessed from a set of known failed products, and part attribute values each having a higher support in the faulty product are extracted. In this process, a subset of parts used in the faulty product is also obtained simultaneously. The part attribute values having higher supports and the subset of parts used in the faulty product are represented as a tree in which a parts type serves as a node. Next, an information gain of a rule that having the two part attribute values is a cause of failure is calculated on two part attribute values having higher supports on the tree of the parts type. This calculation is locally performed on a common parent part of two parts and parts having a certain information gain is outputted as a cause of failure.
    Type: Application
    Filed: June 22, 2009
    Publication date: October 29, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Fumihiko Kitayama, Hirofumi Matsuzawa, Masayuki Numao, Madoka Yuriyama