Patent ID: 6751595
Filing Date: 2004-06-15
Classification: G10L

Abstract:
A method of speech recognition comprising:receiving a spoken utterance by a user; providing a vocabulary word storage memory comprising a first set of orthographies potentially recognizable as the spoken utterance, wherein the first set of orthographies comprises a first subset of an entire vocabulary comprising orthographies predetermined to have a high probability of matching the spoken utterance; providing a spoken utterance storage memory for storing the spoken utterance; processing the spoken utterance to determine whether one of the orthographies stored in the first set corresponds to the spoken utterance, thereby indicating a recognized word; prompting the user for a keyword input if none of the orthographies in the first set corresponds to the spoken utterance, wherein the keyword input designates one of a plurality of second sets of orthographies potentially recognizable as the spoken utterance, wherein each second set comprises a predetermined subset of the entire vocabulary; receiving the keyword input; comparing the keyword input to the first set of orthographies to determine the second set of orthographies; and determining whether one of the orthographies stored in the second set corresponds to the spoken utterance, thereby indicating a recognized word.