Patents by Inventor Dorcas T. Hsia

Dorcas T. Hsia 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).

  • Apparatus, method, and system for coalesced Z data and color data for raster operations
    Patent number: 7847802
    Abstract: A graphics system coalesces Z data and color data for a raster operations stage. The Z data and color data are stored in a memory aligned tile format. In one embodiment, rendering modes in which the tile does not have a data capacity corresponding to Z data or color data for a whole number of pixels have data for at least one pixel split across entries to improve packing efficiency. Rendering modes having a number of bits for Z data or color data that does not equal a power of two such as 24 bits, 48 bits, and 96 bits, may be implemented with a high packing efficiency in tile formats having a data capacity corresponding to a power of 2 bits.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: December 7, 2010
    Assignee: NVIDIA Corporation
    Inventors: Donald A. Bittel, Dorcas T. Hsia, David Kirk McAllister, Jonah M. Alben
  • Apparatus, method, and system for coalesced Z data and color data for raster operations
    Patent number: 7474313
    Abstract: A graphics system coalesces Z data and color data for a raster operations stage. The Z data and color data are stored in a memory aligned tile format. In one embodiment, rendering modes in which the tile does not have a data capacity corresponding to Z data or color data for a whole number of pixels have data for at least one pixel split across entries to improve packing efficiency. Rendering modes having a number of bits for Z data or color data that does not equal a power of two such as 24 bits, 48 bits, and 96 bits, may be implemented with a high packing efficiency in tile formats having a data capacity corresponding to a power of 2 bits.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: January 6, 2009
    Assignee: Nvidia Corporation
    Inventors: Donald A. Bittel, Dorcas T. Hsia, David Kirk McAllister, Jonah M. Alben