Patents by Inventor Naohumi Sakai

Naohumi Sakai 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).

  • Data I/O transaction method and system
    Patent number: 5023774
    Abstract: After passing through the process in which the number of one page I/O requests generated in a certain unit time period, the number of multiple pages I/O requests, and the number of pages required at each of the multiple pages I/O request are input, the quantity of the I/O requests generated in the above-described unit time period is calculated in accordance with the thus-input values. The unit (the number of pages) for a multiple pages I/O actually performed by one time operation of the I/O control device corresponding to the multiple pages I/O request from users is determined in accordance with the user's instruction or specific criterion for the system based on the result of the above-described calculation, the performance of the CPU, the performance of the I/O control device, the performance of the DASD (Direct Access Storage Decive), and to which DASD each of I/O requests corresponds.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: June 11, 1991
    Assignees: Hitachi Software Engineering Co., Ltd., Hitachi, Ltd.
    Inventors: Naohumi Sakai, Masashi Tsuchida, Kazuhiko Ohmachi, Yasuhiro Imai, Toshio Honma