Patents by Inventor Philip J. McPartland

Philip J. McPartland 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 for compressing video data using bi-orthogonal wavelet coding having a DSP for adjusting compression ratios to maintain a constant data flow rate of the compressed data
    Patent number: 6205499
    Abstract: An encoder for compressing video data to allow for its transmission over a narrow bandwidth. The encoder comprises a multiformat video codec for real-time compression digital data and a dynamic random access memory which operates as a temporary storage device storing compressed data while the codec is compressing data. A digital signal processor adjust the data compression ratio for the codec while the codec is compressing video data. An EPROM, which is connected to the digital signal processor contains the software to run the digital signal processor. A programmable gate array operates as an interface between the codec and an external processor. The array includes a read write controller which provides a read signal to the codec to allow compressed video data to be read from the codec to a parallel to serial shift register within the array. The write control signals which allow data to be written into and shifted through the register are also generated by the read write controller.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: March 20, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Christian L. Houlberg, Philip J. McPartland