Patents by Inventor Yutaka Nagao

Yutaka Nagao 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).

  • Publication number: 20170108350
    Abstract: This disclosure relates to systems and methods for management of information, including environmental information, obtained by a variety of sensors associated with one or more distributed mobile sensor platforms. In certain embodiments, the geographically transitory nature of a mobile sensor platform may be leveraged to facilitate collection of environmental information over a larger geographic area than that of a fixed sensor platform. Embodiments disclosed herein provide for information consistency and/or quality checking of information obtained by mobile sensor platforms. Further embodiments may be used to incentivize the collection and/or acquisition of certain data via point and/or credit based compensation.
    Type: Application
    Filed: October 15, 2015
    Publication date: April 20, 2017
    Inventor: Yutaka NAGAO
  • Publication number: 20140282974
    Abstract: Systems and methods are described that use tag authentication and presence verification techniques in connection with a variety of transactions. In certain embodiments, an authentication device may verify the authenticity of a secure tag by determining whether the secure tag stores secret information provisioned by a trusted authority. In some embodiments, such an authentication process may be performed without exposing the secret information to the authentication device, thereby maintaining integrity of the secure tag. In other embodiments, insecure tags and/or tags that do not include secret information are used.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Inventors: David P. MAHER, Pierre CHAVANNE, Yutaka NAGAO, Michael MANENTE
  • Patent number: 8301569
    Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: October 30, 2012
    Assignee: Sony Corporation
    Inventors: Yoji Kawamoto, Yutaka Nagao, Seiichi Adachi, Atsushi Nakamura
  • Patent number: 8126813
    Abstract: A client obtains license information. The client has a client module for using content under conditions defined in the license information. When the client module is updated and a new function is added, the client obtains updating license information including permission of the new function. The client is allowed to use the content under the conditions defined in the previous license information and the conditions defined in the updating license information without obtaining new rights information for the updated client module.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: February 28, 2012
    Assignee: Sony Corporation
    Inventor: Yutaka Nagao
  • Patent number: 7933837
    Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: April 26, 2011
    Assignee: Sony Corporation
    Inventors: Yoji Kawamoto, Yutaka Nagao, Seiichi Adachi, Atsushi Nakamura
  • Patent number: 7853532
    Abstract: A client obtains license information. The client has a client module for using content under conditions defined in the license information. When the client module is updated and a new function is added, the client obtains updating license information including permission of the new function. The client is allowed to use the content under the conditions defined in the previous license information and the conditions defined in the updating license information without obtaining new rights information for the updated client module.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: December 14, 2010
    Assignee: Sony Corporation
    Inventor: Yutaka Nagao
  • Publication number: 20100205677
    Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.
    Type: Application
    Filed: April 20, 2010
    Publication date: August 12, 2010
    Applicant: SONY CORPORATION
    Inventors: Yoji Kawamoto, Yutaka Nagao, Seiichi Adachi, Atsushi Nakamura
  • Publication number: 20080098384
    Abstract: A client obtains license information. The client has a client module for using content under conditions defined in the license information. When the client module is updated and a new function is added, the client obtains updating license information including permission of the new function. The client is allowed to use the content under the conditions defined in the previous license information and the conditions defined in the updating license information without obtaining new rights information for the updated client module.
    Type: Application
    Filed: December 18, 2007
    Publication date: April 24, 2008
    Applicant: Sony Corporation
    Inventor: Yutaka Nagao
  • Publication number: 20070198413
    Abstract: A content reproducing device decrypts and outputs an encrypted content encrypted by a content key received from a content transmitting device. The content reproducing device includes a content key obtaining unit for obtaining the content key, and a storage unit for storing the key unique to the content transmitting device, usage restriction information to restrict the usage of the key unique to the content transmitting device, and link information indicating linking of the content transmitting device and the content reproducing device. The content reproducing device also includes a key decryption unit for decrypting the content key with the key unique to the content transmitting device in the event that the content reproducing device is included in the stored link information unit, and a usage control unit for restricting usage of the key unique to the content transmitting device, based on the stored usage restriction information.
    Type: Application
    Filed: March 30, 2006
    Publication date: August 23, 2007
    Inventor: Yutaka Nagao
  • Publication number: 20060235956
    Abstract: An apparatus and method is disclosed wherein a process of information relating to a content which applies a high load to a CPU can be processed efficiently in a distributed manner. A request source information processing apparatus transmits a process type of the process to be executed, and receives identification information of different information processing apparatus in accordance with the process type and apparatus information associated with the identification information including resource information. Then, the request source apparatus acquires load information of the apparatus, and determines a particular apparatus to which a request to execute a process is to be issued based on the resource information and the load information. Then, the request source apparatus issues a request to execute the process and transmits information relating to the content to the particular apparatus.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 19, 2006
    Applicant: Sony Corporation
    Inventors: Hiroshi Kawaguchi, Yoji Kawamoto, Yutaka Nagao, Koji Yoshimura, Manabu Kimura
  • Publication number: 20060224513
    Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 5, 2006
    Applicant: Sony Corporation
    Inventors: Yoji Kawamoto, Yutaka Nagao, Seiichi Adachi, Atsushi Nakamura
  • Publication number: 20050144141
    Abstract: A client obtains license information. The client has a client module for using content under conditions defined in the license information. When the client module is updated and a new function is added, the client obtains updating license information including permission of the new function. The client is allowed to use the content under the conditions defined in the previous license information and the conditions defined in the updating license information without obtaining new rights information for the updated client module.
    Type: Application
    Filed: October 26, 2004
    Publication date: June 30, 2005
    Applicant: SONY CORPORATION
    Inventor: Yutaka Nagao
  • Publication number: 20050144140
    Abstract: A client transmits existing license information that includes usage conditions of content, additional difference information including an additional usage condition, and a client certificate to a license server. The license server updates the existing license information based on the additional difference information to generate updated license information, and returns the updated license information to the client.
    Type: Application
    Filed: October 18, 2004
    Publication date: June 30, 2005
    Applicant: SONY CORPORATION
    Inventor: Yutaka Nagao
  • Publication number: 20040236697
    Abstract: The present invention is intended to provide a right presentation based on a combination of two or more rights to realize a more flexible right presentation. Disclosed herein is an information processing apparatus which can use content information within a range of usage conditions written in license information, including: a storage element for storing first license information; a receiving element for receiving second license information; and a linking element for linking a part or all of the second license information with the first license information, wherein the content information is used within a range of license information obtained by linking the first license information with the second license information by the linking element.
    Type: Application
    Filed: April 15, 2004
    Publication date: November 25, 2004
    Applicant: Sony Corporation
    Inventor: Yutaka Nagao
  • Publication number: 20040172556
    Abstract: The present invention relates to a data communication system that prevents a timing at which digital content data is made usable or a timing at which a billing process is performed from being known by a malicious client, to an information processing device and method therefor, to a recording medium therefor, and to a program therefor. A client terminal encrypts a signal TAG1 and a random number NON1 in a linked manner and transmits these to a content sales server. The content sales server decrypts the received encrypted data sequence and sends back the random number NON1 contained in the decrypted result to the client terminal. The client terminal confirms that the random number NON1 is contained in this response. Then, after this series of processes is repeated a random number of times, the digital content is set to the effective state. The present invention can be applied to services which sell digital content via the Internet.
    Type: Application
    Filed: January 22, 2004
    Publication date: September 2, 2004
    Inventor: Yutaka Nagao