Patents by Inventor Kiyotake Kumazawa

Kiyotake Kumazawa 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: 8819205
    Abstract: Provided are a content transfer system, a content transfer method, and a home server capable of backing up all backup target contents without having to transfer all backup target contents. This content transfer system includes a home storage and an online storage. The home storage transfers identifying information of a backup target content to the online storage and requests the online storage to determine the existence of a content that is identical to the backup target content upon requesting the online storage to back up the backup target content, transfers metadata to the online storage when an identical content exists in the online storage, and transfers the backup target content to the online storage in all other cases.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: August 26, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Kodama, Kiyotake Kumazawa, Naoko Iwami, Akira Yamamoto, Masaaki Iwasaki
  • Patent number: 8775600
    Abstract: Provided is a storage center including a storage subsystem for storing content data to be used by the user's home server, and a center server for controlling the storage subsystem. The center server aggregates the content recording reservation requests sent from several home servers, obtains content data from a content server and stores the content data in the storage subsystem at a designated recording start time, and notifies the user's home server that the recording reservation is complete.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: July 8, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Naoko Iwami, Kiyotake Kumazawa, Akira Yamamoto, Masaaki Iwasaki, Shoji Kodama
  • Patent number: 8364645
    Abstract: A file system transfer designation section for transferring the file system matching with file system transfer rules from the first volume of the first storage apparatus to the second volume of the second storage apparatus based on the first file system transfer rules, a file system storage information manager for updating storage information of the file system in accordance with transfer of the file system by the file system transfer designation section, and transmitting the updated file system storage information, and a search information manager for updating search information for searching the files based on a file search request from the client apparatus using the file system storage information sent by the file system storage information manager are provided.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: January 29, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Masaaki Iwasaki, Kiyotake Kumazawa
  • Publication number: 20120271934
    Abstract: Provided is a storage center including a storage subsystem for storing content data to be used by the user's home server, and a center server for controlling the storage subsystem. The center server aggregates the content recording reservation requests sent from several home servers, obtains content data from a content server and stores the content data in the storage subsystem at a designated recording start time, and notifies the user's home server that the recording reservation is complete.
    Type: Application
    Filed: July 3, 2012
    Publication date: October 25, 2012
    Inventors: Naoko IWAMI, Kiyotake Kumazawa, Akira Yamamoto, Masaaki Iwasaki, Shoji Kodama
  • Patent number: 8239508
    Abstract: Provided is a storage center including a storage subsystem for storing content data to be used by the user's home server, and a center server for controlling the storage subsystem. The center server aggregates the content recording reservation requests sent from several home servers, obtains content data from a content server and stores the content data in the storage subsystem at a designated recording start time, and notifies the user's home server that the recording reservation is complete.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: August 7, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Naoko Iwami, Kiyotake Kumazawa, Akira Yamamoto, Masaaki Iwasaki, Shoji Kodama
  • Patent number: 7877359
    Abstract: A problem of prior art is that normal backup data is lost as a result of taking a backup by overwriting the normal backup data with data that has been changed greatly from a virus infection or the like. This invention provides a computer system having a storage system. The storage system contains a first storage area and a second storage area for storing a copy of data that is stored in the first storage area at one point in time. Only when the differential amount indicating the difference between data stored in the first storage area and data stored in the second storage area is smaller than a predetermined threshold, the storage system deletes the data which is stored in the second storage area and newly stores a copy of the data stored in the first storage area in the second storage area.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: January 25, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Kodama, Kiyotake Kumazawa
  • Patent number: 7865537
    Abstract: Privacy information of a user is protected without hampering convenience when such user is to process a file in an online file storage. Provided is a file sharing system including at least one or more information processing units and a storage apparatus connected to the at least one or more information processing units via the Internet, and for storing files from the at least one or more information processing units in the storage apparatus and sharing the stored files with the at least one or more information processing units. The information processing unit includes a file creation unit for separating, when creating a file in the storage apparatus, privacy information that identifies a user creating the file from information required for creating the file in the storage apparatus, and creating the file in the storage apparatus by using information obtained by converting the separated privacy information.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: January 4, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Kodama, Kiyotake Kumazawa, Naoko Iwami, Tetsuya Uemura
  • Patent number: 7827149
    Abstract: The risk of a third party referring to or using backup data without authorization upon restoring such backup data in an HDD recorder is mitigated. First authentication information of a user as the HDD owner and second authentication information of an engineer of a repair plant are registered in an online backup service system. The first authentication information is used when backing up data recorded in the HDD to the online backup service system, and the second authentication information is used when restoring the data backed up to the online backup service system. The data backup processing and data restoration processing are executed only when the authentication information is appropriate. Since the user will directly receive an email from the online backup service system regarding who restored which data at what time, such user will be able to audit the data restoration process independently from the person recovering the data.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: November 2, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Kodama, Kiyotake Kumazawa, Naoko Iwami, Akira Yamamoto, Masaaki Iwasaki, Atsuo Kawaguchi
  • Publication number: 20100241656
    Abstract: A file system transfer designation section for transferring the file system matching with file system transfer rules from the first volume of the first storage apparatus to the second volume of the second storage apparatus based on the first file system transfer rules, a file system storage information manager for updating storage information of the file system in accordance with transfer of the file system by the file system transfer designation section, and transmitting the updated file system storage information, and a search information manager for updating search information for searching the files based on a file search request from the client apparatus using the file system storage information sent by the file system storage information manager are provided.
    Type: Application
    Filed: May 7, 2010
    Publication date: September 23, 2010
    Applicant: HITACHI LTD.
    Inventors: Masaaki Iwasaki, Kiyotake Kumazawa
  • Patent number: 7730071
    Abstract: A file system transfer designation section for transferring the file system matching with file system transfer rules from the first volume of the first storage apparatus to the second volume of the second storage apparatus based on the first file system transfer rules, a file system storage information manager for updating storage information of the file system in accordance with transfer of the file system by the file system transfer designation section, and transmitting the updated file system storage information, and a search information manager for updating search information for searching the files based on a file search request from the client apparatus using the file system storage information sent by the file system storage information manager are provided.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: June 1, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masaaki Iwasaki, Kiyotake Kumazawa
  • Publication number: 20090172141
    Abstract: Provided is a storage center including a storage subsystem for storing content data to be used by the user's home server, and a center server for controlling the storage subsystem. The center server aggregates the content recording reservation requests sent from several home servers, obtains content data from a content server and stores the content data in the storage subsystem at a designated recording start time, and notifies the user's home server that the recording reservation is complete.
    Type: Application
    Filed: March 21, 2008
    Publication date: July 2, 2009
    Inventors: Naoko Iwami, Kiyotake Kumazawa, Akira Yamamoto, Masaaki Iwasaki, Shoji Kodama
  • Publication number: 20090172046
    Abstract: The risk of a third party referring to or using backup data without authorization upon restoring such backup data in an HDD recorder is mitigated. First authentication information of a user as the HDD owner and second authentication information of an engineer of a repair plant are registered in an online backup service system. The first authentication information is used when backing up data recorded in the HDD to the online backup service system, and the second authentication information is used when restoring the data backed up to the online backup service system. The data backup processing and data restoration processing are executed only when the authentication information is appropriate. Since the user will directly receive an email from the online backup service system regarding who restored which data at what time, such user will be able to audit the data restoration process independently from the person recovering the data.
    Type: Application
    Filed: March 27, 2008
    Publication date: July 2, 2009
    Inventors: Shoji KODAMA, Kiyotake KUMAZAWA, Naoko IWAMI, Akira YAMAMOTO, Masaaki IWASAKI, Atsuo KAWAGUCHI
  • Publication number: 20090125577
    Abstract: A problem of prior art is that normal backup data is lost as a result of taking a backup by overwriting the normal backup data with data that has been changed greatly from a virus infection or the like. This invention provides a computer system having a storage system. The storage system contains a first storage area and a second storage area for storing a copy of data that is stored in the first storage area at one point in time. Only when the differential amount indicating the difference between data stored in the first storage area and data stored in the second storage area is smaller than a predetermined threshold, the storage system deletes the data which is stored in the second storage area and newly stores a copy of the data stored in the first storage area in the second storage area.
    Type: Application
    Filed: February 4, 2008
    Publication date: May 14, 2009
    Inventors: Shoji Kodama, Kiyotake Kumazawa
  • Publication number: 20090125522
    Abstract: Privacy information of a user is protected without hampering convenience when such user is to process a file in an online file storage. Provided is a file sharing system including at least one or more information processing units and a storage apparatus connected to the at least one or more information processing units via the Internet, and for storing files from the at least one or more information processing units in the storage apparatus and sharing the stored files with the at least one or more information processing units. The information processing unit includes a file creation unit for separating, when creating a file in the storage apparatus, privacy information that identifies a user creating the file from information required for creating the file in the storage apparatus, and creating the file in the storage apparatus by using information obtained by converting the separated privacy information.
    Type: Application
    Filed: February 4, 2008
    Publication date: May 14, 2009
    Inventors: Shoji Kodama, Kiyotake Kumazawa, Naoko Iwami, Tetsuya Uemura
  • Publication number: 20090106407
    Abstract: Provided are a content transfer system, a content transfer method, and a home server capable of backing up all backup target contents without having to transfer all backup target contents. This content transfer system includes a home storage and an online storage. The home storage transfers identifying information of a backup target content to the online storage and requests the online storage to determine the existence of a content that is identical to the backup target content upon requesting the online storage to back up the backup target content, transfers metadata to the online storage when an identical content exists in the online storage, and transfers the backup target content to the online storage in all other cases.
    Type: Application
    Filed: March 20, 2008
    Publication date: April 23, 2009
    Applicant: HITACHI, LTD.
    Inventors: Shoji KODAMA, Kiyotake KUMAZAWA, Naoko IWAMI, Akira YAMAMOTO, Masaaki IWASAKI
  • Publication number: 20090106388
    Abstract: This storage system includes one or more household appliances, a home server storing contents data and management information of the contents data received from the one or more household appliances and pre-set with an unused capacity limit, and an online storage center. When the actual unused capacity in the home server falls below the capacity limit, the home server sends to and stores in the online storage center prescribed contents data and management information of the prescribed contents data among the contents data and management information of the contents data stored in the home server, and deletes the prescribed contents data from the home server while leaving the management information of the prescribed contents data stored in the home server.
    Type: Application
    Filed: January 28, 2008
    Publication date: April 23, 2009
    Inventors: Naoko Iwami, Kiyotake Kumazawa, Akira Yamamoto, Masaaki Iwasaki, Shoji Kodama
  • Publication number: 20080065587
    Abstract: A file system transfer designation section for transferring the file system matching with file system transfer rules from the first volume of the first storage apparatus to the second volume of the second storage apparatus based on the first file system transfer rules, a file system storage information manager for updating storage information of the file system in accordance with transfer of the file system by the file system transfer designation section, and transmitting the updated file system storage information, and a search information manager for updating search information for searching the files based on a file search request from the client apparatus using the file system storage information sent by the file system storage information manager are provided.
    Type: Application
    Filed: November 28, 2006
    Publication date: March 13, 2008
    Applicant: HITACHI, LTD.
    Inventors: Masaaki Iwasaki, Kiyotake Kumazawa
  • Publication number: 20080065707
    Abstract: A file system transfer designation section for transferring the file system matching with file system transfer rules from the first volume of the first storage apparatus to the second volume of the second storage apparatus based on the first file system transfer rules, a file system storage information manager for updating storage information of the file system in accordance with transfer of the file system by the file system transfer designation section, and transmitting the updated file system storage information, and a search information manager for updating search information for searching the files based on a file search request from the client apparatus using the file system storage information sent by the file system storage information manager are provided.
    Type: Application
    Filed: November 28, 2006
    Publication date: March 13, 2008
    Inventors: Masaaki Iwasaki, Kiyotake Kumazawa
  • Patent number: 4703242
    Abstract: A magnetic disc head positioning system using a stepper motor eliminates positioning errors due to different approach directions and distances to a target track position through a drive control of temporarily stopping the head at a position immediately preceding or following the target track depending on the approach direction and, thereafter, moving the head from this position to the target track with a constant transient response. The head is brought to the temporary stop position by utilizing the overshooting response of the stepper motor so as to minimize the positioning time.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: October 27, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Kiyotake Kumazawa, Noriaki Minamide, Yoshihiro Moribe, Mikio Takahashi, Osamu Beppu, Masahiro Mitamura