Patents by Inventor Mark M. Ng

Mark M. Ng 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 power control output circuit for programmable logic devices
    Patent number: 6529041
    Abstract: A power control output circuit for a PLD that allows the PLD to selectively operate in either a low current (“normal”) output mode, or a high current power control mode. In one embodiment, the power control output circuit is incorporated into a special Input/Output Blocks (PC-IOB) of the PLD. When no power control function is needed, a high current output portion of the power control output circuit is deactivated by storing an associated data value a power control configuration memory cell of the PLD, and an output driver of the PC-IOB generates low current output signals on a device I/O terminal. To perform power control functions, a portion of the PLD's programmable logic circuitry is configured to generate a power control data signal, and the high current output portion of the power control output circuit is enabled by storing a corresponding data value in the power control configuration memory cell.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: March 4, 2003
    Assignee: Xilinx, Inc.
    Inventors: Mark M. Ng, Brian D. Erickson, Jesse H. Jenkins, IV