US Patent No: 5,027,406

Number of patents in Portfolio can not be more than 2000

Method for interactive speech recognition and training

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Abstract

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A method for creating word models for a large vocabulary, natural language dictation system. A user with limited typing skills can create documents with little or no advance training of word models. As the user is dictating, the user speaks a word which may or may not already be in the active vocabulary. The system displays a list of the words in the active vocabulary which best match the spoken word. By keyboard or voice command, the user may choose the correct word from the list or may choose to edit a similar word if the correct word is not on the list. Alternately, the user may type or speak the initial letters of the word. Then the recognition algorithm is called again satisfying the initial letters, and the choices displayed again. A word list is then also displayed from a large backup vocabulary. The best words to display from the backup vocabulary are chosen using a statistical language model and optionally word models derived from a phonemic dictionary. When the correct word is chosen by the user, the speech sample is used to create or update an acoustic model for the word, without further intervention by the user. As the system is used, it also constantly updates its statistical language model. The system gets more and more word models and keeps improving its performance the more it is used. The system may be used for connected speech as well as for discrete utterances.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NUANCE COMMUNICATIONS, INC.ARMONK, NY1544

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baker, James K Maitland, FL 50 1702
Porter, Edward W Exeter, NH 21 769
Roberts, Jed Cambridge, MA 1 257

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DRAGON SYSTEMS, INC. (2)
4,866,778 Interactive speech recognition apparatus 149 1986
4,829,576 Voice recognition system 130 1986
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
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Bell Telephone Laboratories, Incorporated (1)
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TEXAS INSTRUMENTS INCORPORATED (1)
4,882,757 Speech recognition system 44 1989
 
Tokyo Shibaura Denki Kabushiki Kaisha (1)
4,653,097 Individual verification apparatus 43 1986

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
NUANCE COMMUNICATIONS, INC. (62)
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AT&T CORP. (9)
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