Patents by Inventor Jan E. B. Jensen

Jan E. B. Jensen 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).

  • Clock division chip for computer system which interfaces a slower cache memory controller to be used with a faster processor
    Patent number: 5210858
    Abstract: A clocking control circuit for a computer system and method for receiving a microprocessor clock signal which drives a microprocessor and for supplying a support clock signal having a lower frequency. The support clock frequency drives support interface circuitry such as a peripheral controller, a CPU/memory controller, and a bus bridge interface, and thus causes the support interface circuitry to operate at a lower frequency than the microprocessor. The clocking control circuit ensures synchronization between the support clocking signal and the microprocessor clocking signal. The transmission of control signals between the microprocessor and support interface circuitry is controlled to ensure proper communications between the microprocessor and support circuitry.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: May 11, 1993
    Inventors: Jan E. B. Jensen, Keith S. K. Lee, J. David Mulvenna, Keith B. Riley