Patents by Inventor Rika Kashima

Rika Kashima 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).

  • Redundant disk array (raid) system utilizing separate cache memories for the host system and the check data
    Patent number: 5485598
    Abstract: A memory device with a redundant disk array. In order to quicken the processing of data writing into the redundant disk array, a first cache memory for accessing the redundant disk array, a second cache memory for storing old data of the first cache memory when the data of the first cache memory are renewed, and a third cache memory for storing old CK data read out of the redundant disk array when the data of the first cache memory are renewed are provided. New CK data are produced from new data for the renewal, old data stored in the second cache memory and old CK data stored in the third cache memory, and the new data for the renewal and the new CK data are stored into data storage means and CK data storage means of the redundant disk array.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: January 16, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Rika Kashima, Shunichiro Nakamura, Harumi Minemura, Katsumi Shiono, Masahiro Higuchi, Mikio Yoshimori, Takayuki Hayakawa