Patents by Inventor Nambirajan Seshardi

Nambirajan Seshardi 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).

  • Generalized viterbi decoding algorithms
    Patent number: 5208816
    Abstract: A data transmission system and method for processing speech, image and other data disclosed which embodies parallel- and serial-generalized Viterbi decoding algorithms (GVA) that produce a rank ordered list of the L best candidates after a trellis search. Error detection is performed by identifying unreliable sequences through comparison of the likelihood metrics of the two or more most likely sequences. Unreliable sequences are re-estimated using inter-frame redundancy or retransmission.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: May 4, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Nambirajan Seshardi, Carl-Erik W. Sundberg