Patents by Inventor Jeff Trom

Jeff Trom 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).

  • Data compression and file segmentation in directmodel JT datastores
    Patent number: 8019788
    Abstract: The size of lightweight JT data files containing CAD data is reduced by employing lossy compression where acceptable for portions of the CAD data, such as 3D geometry data. Dictionary-based lossless compression for the remaining portions is augmented by exploiting common repeated structures for some portions, such as precise Brep data, and compressing separate but similar data, such as all metadata for a given part and all scene graph data, together as a single block. The compressed data is then written in separate, uniquely identified data segments indexed in a table of contents, allowing quick access to any data segment for streaming.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: September 13, 2011
    Assignee: Siemens Product Lifecycle Management Software Inc.
    Inventors: Michael B. Carter, Brett Harper, Jeff Trom