Patents by Inventor Patracia L. Whiteside

Patracia L. Whiteside 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 of data communication flow control in a data processing system using busy/ready commands
    Patent number: 6157967
    Abstract: A multiprocessor system includes a number of sub-processor systems, each substantially identically constructed, and each comprising a central processing unit (CPU), and at least one I/O device, interconnected by routing apparatus that also interconnects the sub-processor systems. A CPU of any one of the sub-processor systems may communicate, through the routing elements, with any I/O device of the system, or with any CPU of the system.Communications between I/O devices and CPUs is by packetized messages. Interrupts from I/O devices are communicated from the I/O devices to the CPUs (or from one CPU to another CPU) as message packets.CPUs and I/O devices may write to, or read from, memory of a CPU of the system. Memory protection is provided by an access validation method maintained by each CPU in which CPUs and/or I/O devices are provided with a validation to read/write memory of that CPU, without which memory access is denied.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: December 5, 2000
    Assignee: Tandem Computer Incorporated
    Inventors: Robert W. Horst, William Edward Baker, Linda Ellen Zalzala, William Patterson Bunton, Richard W. Cutts, Jr., David J. Garcia, John C. Krause, Stephen G. Low, David Paul Sonnier, William Joel Watson, Patracia L. Whiteside