Patents by Inventor Kenneth A. Schmahl

Kenneth A. Schmahl 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).

  • Patent number: 5970070
    Abstract: A method, in a host adapter circuit configured for coupling a host electronic device with one of a fiber channel loop and a point-to-point communication channel, for receiving data at the host adapter circuit from one of the fiber channel loop and the point-to-point communication channel. The method includes providing a selectable control signal configured for indicating whether the host adapter circuit is coupled to the fiber channel loop or the point-to-point communication channel. The method further includes providing a front-end receive circuit. The front-end receive circuit is configured for coupling with an input data port. The input data port represents one of the fiber channel loop and the point-to-point communication channel. The method also includes coupling the front-end receive circuit with the selectable control signal.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: October 19, 1999
    Assignee: Sun Microsystems, Inc.
    Inventors: Kin M. Ho, David C. Banks, John C. Schell, Tai Quan, Teshager Tesfaye, Kenneth A. Schmahl, Matthew J. Tedone, Drew G. Doblar
  • Patent number: 5764931
    Abstract: A method for passing mastership of a bus is described. According to the method, it is determined whether to use the bus. If the bus is to be used, it is determined whether the bus is available. If the bus is available, the bus is accessed and a signal is generated to indicate that the bus is being accessed. A timer is also started and access to the bus is yielded when the timer expires. A processor that passes mastership to a shared resource is also described. The processor comprises a resource accessing unit. The resource accessing unit allows the processor to access a resource upon receiving a first signal from a component coupled to the resource. The resource accessing unit yields access of the resource to the component upon receiving a second signal from the component.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: June 9, 1998
    Assignee: Sun Microsystems, Inc.
    Inventors: Kenneth A. Schmahl, Matthew J. Tedone, John C. Schell, Igor Karminsky, Ray P. Chan