Patents by Inventor Tsutomu Ban

Tsutomu Ban 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).

  • Bus lock control apparatus capable of controlling without stopping bus arbiters
    Patent number: 5353414
    Abstract: A bus lock control apparatus including a bus arbiter having a register for storing bus lock enable information in correspondence with a plurality of agents, and a lock acknowledging means for acknowledging an OR signal of all pieces of information of the register to agents connected to the common bus. The lock acknowledging means is latched after a lapse of a predetermined period of time when a bus lock request or bus lock release request is enabled in the bus arbiter.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: October 4, 1994
    Assignee: NEC Corporation
    Inventors: Hiroshi Iida, Tsutomu Ban