Generation and selection of voice recognition grammars for conducting database searches
US7729913B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2003 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Jan 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/19
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Various processes are disclosed for conducting database searches by telephone. A user is initially prompted to utter N characters of a search query, and/or to enter these characters on a telephone keypad. Based on the user's entry, a speech recognition grammar is either selected or is generated dynamically for processing the user's utterance of the complete search query. In one embodiment, the speech recognition grammar is selected based on a sequence of N telephone keys selected by the user, without requiring the user to uniquely specify the N characters to which these keys correspond. In another embodiment, the speech recognition grammar is selected based solely on utterances of the N characters by the user such that the correct grammar is selected even if an utterance of one character is misidentified as an utterance of a similar sounding character. Also disclosed are methods for generating speech recognition grammars from query logs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.