Patents by Inventor Hirouki Kanai

Hirouki Kanai 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).

  • Method and apparatus for communicating peripheral data to/from minor operating systems running as subprocesses on a main operating system
    Patent number: 5301277
    Abstract: A computer system eliminates overhead due to overlapping input processing for a keyboard, etc., by two operating systems, where one is a minor operating system operating as a subprocess of the other, which is a main operating system. The system uses an interrupt from a keyboard interface for input processing. A data input from the keyboard is determined as to whether or not it has been assigned to the minor operating system. If it has been assigned to the minor operating system, the key data is written directly to the key data buffer by the driver of the main operating system. The application program executable under the minor operating system can receive key data from a keyboard driver of the minor operating system.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: April 5, 1994
    Assignee: Seiko Epson Corporation
    Inventor: Hirouki Kanai