Patents by Inventor Kenji Tonami

Kenji Tonami 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).

  • File server program
    Patent number: 7415518
    Abstract: A file server program that performs proper load distribution among a plurality of file servers. One of the plurality of file servers judges whether to perform a process in compliance with a request to manipulate a file on the basis of judgment conditions predefined for judging which process of processes performed by a cluster it should take charge of when it receives the request to manipulate a file of requests to manipulate a file sent to the plurality of file servers included in the cluster. If it judges that it must perform a process in compliance with the request to manipulate a file, it performs a process on a storage device which it manages in compliance with the request to manipulate a file.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: August 19, 2008
    Assignee: Fujitsu Limited
    Inventors: Yuji Kato, Kenji Tonami, Tomoaki Sato
  • Cache control program
    Patent number: 7210021
    Abstract: A cache control program that reduces cache control load. The cache control programs functions as a multi-bind cache (MBC) manager of a file server. The MBC manager manages a cache memory as a plurality of extents. The MBC manager generates cache IDs including object identifications for identifying the objects of each hierarchical level. Further, the MBC manager generates a cache header table indicating the relation of the cache IDs and the cache extents for each hierarchical level.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: April 24, 2007
    Assignee: Fujitsu Limited
    Inventors: Tomoaki Sato, Kenji Tonami, Yuji Kato
  • Cache control program
    Publication number: 20040221089
    Abstract: A cache control program that reduces cache control load. The cache control programs functions as a multi-bind cache (MBC) manager of a file server. The MBC manager manages a cache memory as a plurality of extents. The MBC manager generates cache IDs including object identifications for identifying the objects of each hierarchical level. Further, the MBC manager generates a cache header table indicating the relation of the cache IDs and the cache extents for each hierarchical level.
    Type: Application
    Filed: December 31, 2003
    Publication date: November 4, 2004
    Applicant: FUJITSU PRIME SOFTWARE TECHNOLOGIES LIMITED
    Inventors: Tomoaki Sato, Kenji Tonami, Yuji Kato
  • File server program
    Publication number: 20030097437
    Abstract: A file server program that performs proper load distribution among a plurality of file servers. One of the plurality of file servers judges whether to perform a process in compliance with a request to manipulate a file on the basis of judgment conditions predefined for judging which process of processes performed by a cluster it should take charge of when it receives the request to manipulate a file of requests to manipulate a file sent to the plurality of file servers included in the cluster. If it judges that it must perform a process in compliance with the request to manipulate a file, it performs a process on a storage device which it manages in compliance with the request to manipulate a file.
    Type: Application
    Filed: November 18, 2002
    Publication date: May 22, 2003
    Applicant: FUJITSU PRIME SOFTWARE TECHNOLOGIES LIMITED
    Inventors: Yuji Kato, Kenji Tonami, Tomoaki Sato