Patents by Inventor I. Lee Hetherington

I. Lee Hetherington 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).

  • Speech data retrieval apparatus, speech data retrieval method, speech data retrieval program and computer usable medium having computer readable speech data retrieval program embodied therein
    Patent number: 8386264
    Abstract: A speech data retrieval apparatus (10) includes a speech database (1), a speech recognition unit (2), a confusion network creation unit (3), an inverted index table creation unit (4), a query input unit (6), a query conversion unit (7) and a label string check unit (8). The speech recognition unit (2) reads speech data from the speech database (1), carries out a speech recognition process with respect to the read speech data, and outputs a result of speech recognition process as a lattice in which a phoneme, a syllable, or a word is a base unit. The confusion network creation unit (3) creates a confusion network based on the output lattice and outputs the result of speech recognition process as the confusion network. The inverted index table creation unit (4) creates an inverted index table based on the output confusion network.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: February 26, 2013
    Assignees: Nippon Telegraph and Telephone Corporation, Massachusetts Institute of Technology
    Inventors: Takaaki Hori, I. Lee Hetherington, Timothy J. Hazen, James R. Glass
  • Speech Data Retrieval Apparatus, Speech Data Retrieval Method, Speech Data Retrieval Program and Computer Usable Medium Having Computer Readable Data Retrieval Program Embodied Therein
    Publication number: 20100121642
    Abstract: A speech data retrieval apparatus (10) includes a speech database (1), a speech recognition unit (2), a confusion network creation unit (3), an inverted index table creation unit (4), a query input unit (6), a query conversion unit (7) and a label string check unit (8). The speech recognition unit (2) reads speech data from the speech database (1), carries out a speech recognition process with respect to the read speech data, and outputs a result of speech recognition process as a lattice in which a phoneme, a syllable, or a word is a base unit. The confusion network creation unit (3) creates a confusion network based on the output lattice and outputs the result of speech recognition process as the confusion network. The inverted index table creation unit (4) creates an inverted index table based on the output confusion network.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 13, 2010
    Applicant: Massachusetts Institute of Technology
    Inventors: Takaaki Hori, I. Lee Hetherington, Timothy J. Hazen, James R. Glass