Patents by Inventor Carl H. Grant

Carl H. Grant 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 distributing control messages between interconnected processing elements by mapping control messages of a shared memory addressable by the receiving processing element
    Patent number: 5606666
    Abstract: A computer system is provided in which asynchronously operating processing elements in the system are connected by means of an interconnection media so as to permit communication between an executing program on one of the processing elements with the memory on another processing element. Inter-processing communication logic located on each of the processing elements permits communication between executing programs on any one processing element. Inter-delivery support hardware is provided for interfacing between the interconnection media and the inter-processing communication logic.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: February 25, 1997
    Assignee: International Business Machines Corporation
    Inventors: Carl H. Grant, Jace W. Krull, Charles E. Kuhlmann, Shahram Salamian, Eugene M. Thomas, James T. Tsevdos
  • I/O Interrupt sequencing for real time and burst mode devices
    Patent number: 4275440
    Abstract: An improved I/O interrupt sequencing method and apparatus including generation of an instruction priority request signal to indicate that a real time task requires programmed I/O service. Generating an end of chain signal to suspend burst I/O control of the I/O bus and allow programmed I/O service to a real time device, and resetting the instruction priority request signal to allow burst mode data transfer to continue at the count positions at which it was suspended.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: June 23, 1981
    Assignee: International Business Machines Corporation
    Inventors: Robert L. Adams, Jr., Carl H. Grant, Karl W. Stevens