Patents by Inventor Jeff Marcus

Jeff Marcus 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).

  • Method and apparatus for selecting a vocabulary sub-set from a speech recognition dictionary for use in real time automated directory assistance
    Patent number: 5987414
    Abstract: A vocabulary sub-set is selected from a large speech recognition dictionary. The selected vocabulary sub-set may be used in a real time directory assistance system to improve the system's real-time performance. The selection process is effected on the basis of the cost-benefit ratio, the benefit being measured in savings in operator working time. On the other hand, the cost is measured in terms of hardware limitations, namely processor throughput. Typically, the vocabulary sub-set is limited to a maximum number orthographies that would enable the system to achieve real-time performance.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: November 16, 1999
    Assignee: Nortel Networks Corporation
    Inventors: Michael George Sabourin, Jeff Marcus