Patents by Inventor Atsushi Takeshita

Atsushi Takeshita 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: 7743413
    Abstract: A client apparatus to which data or a function is provided from a server apparatus, including: a monitoring unit configured to monitor monitoring target software, and detect an abnormal state or unauthorized state of the target software; a server management unit configured to manage an address of the server apparatus that is being accessed by the client apparatus; an abnormality information creation unit configured to create abnormality information from the abnormal state or the unauthorized state, which is detected by the monitoring unit; and an abnormality information notification unit configured to issue the abnormality information to the server apparatus managed by the server management unit.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: June 22, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Ken Ohta, Takashi Suzuki, Hiroshi Inamura, Atsushi Takeshita
  • Patent number: 7735082
    Abstract: A task management system in an operating system executes a plurality of tasks in parallel. The task management system includes an execution standby state changer configured to generate a verifier of a task from data stored in a task address space and to store the generated verifier in a verifier storage area, when the task is changed from an executed state to an execution standby state; and an executed state changer configured to generate a verifier of the task from the data stored in the task address space and to verify matching of the generated verifier with the verifier of the task stored in the verifier storage area, when the task is changed from the execution standby state to the executed state.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: June 8, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Toru Egashira, Yu Inamura, Atsushi Takeshita
  • Patent number: 7725876
    Abstract: Disclosed is an original contents creation apparatus realizing a protection of original contents and derived contents in a derived contents distribution by any number of secondary providers. An original contents creation apparatus includes a limitation rule acquisition unit for acquiring a limitation rule of a case of inserting additional secondary contents into original contents, and a joining/signature unit for joining the limitation rule and a first operation rule to the original contents, the first operation rule defining an operation of a case of having detected an insertion of secondary contents violating the limitation rule, and giving an electronic signature to the original contents to which the limitation rule and the first operation rule are joined.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: May 25, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Takashi Suzuki, Atsushi Takeshita, Hiroshi Fujimoto
  • Patent number: 7693835
    Abstract: A client apparatus for utilizing services by executing service programs includes a policy holding unit, a verification unit, a verification result holding unit, and a verification result notification unit. The policy holding unit holds a service-specific verification policy pre-checked by a device verification apparatus. The verification unit verifies an operation and configuration of the client apparatus itself by using the verification policy when the service program is executed. The verification result notification unit notifies the verification result to the device verification apparatus, which requests the verification result.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: April 6, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Ken Ohta, Hiroshi Inamura, Atsushi Takeshita
  • Publication number: 20100077473
    Abstract: An API checking device 300 includes an API check request reception unit 301 to receive a determination request to request determination of whether to permit the API call, a state information acquiring unit 303 to acquire state information showing a state of the device 100, a check mode setting unit 305 to set a check mode for the API call on the basis of the state information acquired, a determining unit 307 to determine whether to permit the API call on the basis of the check mode, and a check result outputting unit 309 to output the check result generated by the determining unit 307.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 25, 2010
    Applicant: NTT DoCoMo, Inc.
    Inventors: Ken OHTA, Hisatoshi EGUCHI, Tomohiro NAKAGAWA, Atsushi TAKESHITA
  • Patent number: 7639818
    Abstract: A structured document signature device includes an adaptation policy associator configured to associate each element forming a structured document with an adaptation policy indicating an action which can be adapted to a child element of the element or a value of the element; a hash tree constructor configured to insert a hash value of the child element of the element or a hash value of the value of the element into the structured document as an attribute value of the element, and to construct a hash tree including the hash value; a digital signature adder configured to add a digital signature to a root of the hash tree and the adaptation policy; and an output configured to output the structured document and the digital signature.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: December 29, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hiroshi Fujimoto, Takashi Suzuki, Takehiro Nakayama, Atsushi Takeshita
  • Patent number: 7627763
    Abstract: A multi signature verification system adds new additional data to original data with a signature attached thereto and verifies validity of the original data and the additional data. The system includes an electronic signature attaching apparatus including an electronic signature attaching unit attaching an electronic signature to original data previously created, acquired trapdoor hash value, and identification information, a data addition apparatus, and an electronic signature verification apparatus.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: December 1, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hiroshi Fujimoto, Takashi Suzuki, Takehiro Nakayama, Atsushi Takeshita
  • Patent number: 7577425
    Abstract: Networks consist of administrative domains each including an administrative server and at least one mobility agent deployed therein. The mobility agents offer connectivity to a mobile node via Advertisement messages in a form verifiable by the mobile node. Each Advertisement message is signed by a private key of the advertising mobility agent and accompanied by a certificate that contains a public key of the advertising mobility agent and is signed by a private key of the administrative server of the advertising mobility agent. Thus, if the mobile node has the public key of the administrative server, it can authenticate the Advertisement message. If the mobile node does not have the public key, it requests the public key when it registers with the mobility agent. The public key of the administrative server is sent in a certificate signed by the private key of the administrative server ultimately responsible for authentication of the mobile node.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: August 18, 2009
    Assignee: NTT DOCOMO Inc.
    Inventors: Satomi Okazaki, Atsushi Takeshita, Yiqun Yin, Aki Yokote
  • Patent number: 7577851
    Abstract: A multitask execution system executes a plurality of tasks in parallel. The multitask execution system includes an encryption processor configured to generate a key stream unique to each task, by using key data, a task ID for identifying each task, and an output value, the number of the key data being smaller than the number of the plurality of tasks, the output value being output from a monotonic incremental counter when each task is generated, a value of the monotonic incremental counter configured to continue to be increased without being decreased, and to encrypt data stored in a protected area in a memory space for each task by using the generated key stream.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: August 18, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Yu Inamura, Toru Egashira, Atsushi Takeshita
  • Patent number: 7574223
    Abstract: In a telecommunication system, paging areas may be automatically reconfigured as required. Paging areas can be adaptively reconfigured in accordance with changes in movement traffic of mobile hosts. The system and method work under a constraint that only a limited number of area IDs are permitted for each paging unit area. Also, the system and method work over heterogeneous access networks. Thus, according to the presently disclosed embodiments, paging areas reconfigure themselves according to changes in movement traffic of mobile hosts.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: August 11, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Daichi Funato, Atsushi Takeshita
  • Publication number: 20090187396
    Abstract: A software operation modeling device (100) includes: a stack information recording unit (120), an end information recording unit (150), a stack difference information generation unit (130) for generating information for generating stack difference information by concatenating a call stack upper node of stack information with information until the end information is detected by using the end information recorded by the end information recording unit (150), and a model generation unit (140) for generating a software operation model from the stack difference information.
    Type: Application
    Filed: April 12, 2007
    Publication date: July 23, 2009
    Applicants: NTT DoCoMo, Inc., The University of Tsukuba
    Inventors: Akira Kinno, Takehiro Nakayama, Atsushi Takeshita, Kazuhiko Kato, Hirotake Abe, Katsuhiro Suzuki
  • Patent number: 7545754
    Abstract: A geographically adjacent access router discovery system discovers geographically adjacent access routers through a distributed process in which mobile node(s) associated with a current access router may receive beacon signals from geographically adjacent access points. A link layer ID included in the beacon signals may be used by the system to identify corresponding geographically adjacent access routers. Network layer addresses of geographically adjacent access routers may be mapped to corresponding link layer IDs and cached by the system. The cache may be used to identify a network layer address from the link layer ID received in a beacon signal.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: June 9, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Daichi Funato, Carl Williams, Atsushi Takeshita
  • Patent number: 7530017
    Abstract: A document transformation system comprises: template storing means for storing structure information having a specific pattern, as a template; template match detecting means for importing the structure information forming the structured document, and transformation location information indicating a transformation location of the structure information, and for detecting a match portion between the structure information and the template, excepting the transformation location indicated by the transformation location information, from objects of detection, in the structure information; template replacing means for importing the structure information forming the structured document, and match information indicating the match portion, for replacing the match portion indicated by the match information, in the structure information with the template, and for outputting replaced structure information; and transforming means for importing the character string information forming the structured document, the replaced st
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: May 5, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Akira Kinno, Hideki Yukitomo, Takehiro Nakayama, Atsushi Takeshita
  • Publication number: 20090077399
    Abstract: The controlling apparatus is provided with: a memory that stores application software; a setting part that sets an operational manner related to power consumption of an apparatus running the application software, corresponding to the application software stored in the memory; and a controller that controls the power consumption of the apparatus according to the operational manner set by the setting part.
    Type: Application
    Filed: March 21, 2008
    Publication date: March 19, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Goro Noda, Kouhei Hashimoto, Shinji Ota, Masahiko Harada, Toru Hada, Kohei Tanaka, Atsushi Takeshita
  • Publication number: 20080250472
    Abstract: An information processing system includes: an information processing apparatus includes: an acceptance unit that accepts selection of a function and a start command of processing relating to the selected function; a determination unit that determines element processing executed to provide the selected function; and a request unit that makes an execution permission request of the element processing determined in association with the selected function before the start command of processing relating to the selected function is accepted; and a permission management apparatus that accepts the execution permission request of processing from the information processing apparatus, determines whether or not the execution is permitted, and informs the information processing apparatus of the determination result.
    Type: Application
    Filed: March 5, 2008
    Publication date: October 9, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kohei TANAKA, Shinji OTA, Toru HADA, Masahiko HARADA, Goro NODA, Atsushi TAKESHITA
  • Publication number: 20080192310
    Abstract: A three-dimensional image display device is provided which allows a reduction in redundant calculation and high-speed obtainment of an optimum control image to be recorded on an optical wavefront control unit This invention relates to a three-dimensional image display device for displaying a three-dimensional image by irradiating illuminating light at an optical wavefront control unit which records a control image. The three-dimensional image display device of this invention includes a control image optimizing unit which calculates three-dimensional images corresponding to a group of control images based on constraints inherent to the optical wavefront control unit, selects a control image corresponding to a three-dimensional image satisfying a predetermined condition from the group of control images and records the selected control image on the optical wavefront control device.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 14, 2008
    Applicant: NTT DoCoMo, Inc
    Inventors: Masashi Tsuboi, Tsutomu Horikoshi, Atsushi Takeshita
  • Publication number: 20080165386
    Abstract: An information processing device includes: a memory that stores function identifiers assigned to functions built into the information processing device, and function identifiers assigned to functions not built into the information processing device; a display controller that causes a display unit to display the function identifiers stored in the memory; a manipulation unit that accepts manipulation for specifying one of the function identifiers displayed by the display controller; and a transmission unit that transmits, if the one of the function identifiers which has been specified by the manipulation is assigned to one of the functions not built into the information processing device, the specified one of the information identifiers or an information item indicating one of the functions to which is assigned one of the information identifiers which has been specified by the manipulation, to a predetermined device.
    Type: Application
    Filed: October 15, 2007
    Publication date: July 10, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiko Harada, Shinji Ota, Toru Hada, Kohei Tanaka, Goro Noda, Atsushi Takeshita
  • Publication number: 20080098021
    Abstract: There is provided a data change device that includes a storage unit that stores a manipulation explanation data set and a result explanation data set related to each other, the manipulation explanation data set including at least an instruction acceptance image indicating an instruction acceptance unit for accepting an instruction to the data change device or an external device and a manipulation explanation image for explaining a manipulation of the instruction acceptance unit, and the result explanation data set indicating a phenomenon that results from a manipulation indicated by the manipulation explanation data set, a change acceptance unit that accepts a change to be made to the instruction acceptance unit, and a manipulation explanation data change unit that changes the manipulation explanation data set in accordance with the change if the change is accepted by the change acceptance unit.
    Type: Application
    Filed: June 13, 2007
    Publication date: April 24, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiko Harada, Goro Noda, Atsushi Takeshita
  • Patent number: 7245915
    Abstract: A method for providing a triggering mechanism in an all-IP wireless communication system. A plurality of communication paths are established between a mobile terminal and a correspondent node to obtain at least one QoS parameter associated with each communication path. Each communication path that provides a predetermined acceptable level of performance is then identified. A handoff trigger is then generated to the communication path that provides the highest level of performance to the mobile terminal.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: July 17, 2007
    Assignee: NTT Docomo, Inc.
    Inventors: Johnny M. Matta, Atsushi Takeshita
  • Patent number: 7206579
    Abstract: A method and system for providing an adaptive IP handoff triggering system for a wireless communication system that consists of either the same or heterogeneous wireless access technologies. A mobile node is notified of at least one pre-trigger timing parameter by a current access network. At least one variable handoff threshold is constructed with the mobile node based on the at least one pre-trigger timing parameter. An IP handoff is then initiated to a candidate access network when pilot beacon signal strength of the mobile node reaches the variable handoff threshold.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: April 17, 2007
    Assignee: NTT DoCoMo, Inc.
    Inventors: Youngjune Gwon, Daichi Funato, Guangrui Fu, Atsushi Takeshita