Patents by Inventor Juan-Carlos DeMartin

Juan-Carlos DeMartin 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).

  • Concealment of frame erasures for speech transmission and storage system and method
    Patent number: 6775649
    Abstract: A decoder for packetized speech with differential quantization of line spectral frequencies and fixed-codebook gain conceals erased frames with interpolation of future and past frames by reconstruct future frame predicted parameters from presumed interpolations of erased frame parameters.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: August 10, 2004
    Assignee: Texas Instruments Incorporated
    Inventor: Juan-Carlos DeMartin
  • System for dynamic adaptation of data/channel coding in wireless communications
    Patent number: 6421527
    Abstract: A system for dynamic adaptation of wireless communication between a Mobile Station (11) and a Base Station (13) wherein the transmitted frame from the Mobile Station includes a convolutionally coded portion containing a down-link measurement bit and a repetition code identifying the codec mode of the frame. The transmitted frame from the Base Station (13) includes a codec mode command signal for the Mobile Station (11) in the convolutionally encoded portion and the repetition code identify the codec mode of the down-link frame. The Base Station (13) includes means for analyzing the quality of the up-link frame and means from the received down-link measurement bit for determining the down-link quality.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: July 16, 2002
    Assignee: Texas Instruments Incorporated
    Inventors: Juan-Carlos DeMartin, Alan V. McCree, Krishnasamy Anandakumar