Patents by Inventor Ming H. Cheung

Ming H. Cheung 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).

  • System for prioritizing quiesce requests and recovering from a quiescent state in a multiprocessing system with a milli-mode operation
    Patent number: 5694617
    Abstract: A milli-mode routine handles a quiesce interrupt, and causes all the processors in the system to enter a quiesced state. A single bit of a millicode control register indicates a quiesced state and drives an output of the processor to indicate the processor is in a quiesced state. The processor receives a signal indicating all processors in the system are in a quiesced state and latches this value. The output of this latch is sent to the processor instruction unit for use as a millicode branch condition.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: December 2, 1997
    Assignee: International Business Machines Corporation
    Inventors: Charles Franklin Webb, Janet Rhea Easton, Mark Steven Farrell, Ming H. Cheung