Patents by Inventor Joyce Z. Yu

Joyce Z. Yu 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 and method for directing access from a framebuffer to a virtual framebuffer when the framebuffer is powered off in a power management mode
    Patent number: 6877098
    Abstract: Methods and apparatus for managing power of a computer system. Access to a device by a process that accesses the device but does not require user interaction to continue running is prevented during power management and when the device is powered off. Memory space is allocated in the computer system prior to the device being powered off. All access to the device is directed to the allocated memory space during the power management period.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 5, 2005
    Assignee: Sun Microsystems, Inc.
    Inventors: Carol A. Lavelle, Joyce Z. Yu, Eric G. Sultan