Patents by Inventor Reginia K. Chan

Reginia K. Chan 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).

  • PC card controller circuit to detect exchange of PC cards while in suspend mode
    Patent number: 5671368
    Abstract: A PC Card controller, adapted for use in a laptop or notebook computer, generates a fake PC Card-insertion interrupt when a CPU, included in the computer, resumes normal operation after being in a lower power, Suspend operating mode. The PC Card controller includes a host-computer bus-interface adapted for exchanging interrupt signals with a bus included in the host computer. The PC Card controller also includes a PC Card interface-circuit for exchanging digital signals with a PC Card inserted into a PC Card socket included in the host computer. Insertion of a PC Card into the PC Card socket, while the CPU is in its normal operating mode, causes the PC Card interface-circuit to generate an interrupt signal for transmission to the CPU. The PC Card controller also includes a suspend/resume pin that receives a suspend/resume signal generated within the host computer.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: September 23, 1997
    Assignee: O.sub.2 Micro, Inc.
    Inventors: Reginia K. Chan, Yishao Max Huang