Patents by Inventor Risa Altaf

Risa Altaf 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).

  • Architectures for programmable logic devices
    Patent number: 5999016
    Abstract: A programmable logic device has a plurality of super-regions of programmable logic disposed on the device in a two-dimensional array of intersecting rows and columns of super-regions. Each super-region may be like a small or moderately sized programmable logic device and may include a two-dimensional array of intersecting rows and columns of regions of programmable logic. Each region may in turn include a plurality of subregions of programmable logic. Horizontal and vertical inter-super-region interconnection conductors are associated with the rows and columns of super-regions. These conductors are selectively connectable to horizontal and vertical inter-region interconnection conductors in the super-regions.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: December 7, 1999
    Assignee: Altera Corporation
    Inventors: Cameron McClintock, Ninh Ngo, Risa Altaf, Richard G. Cliff