Speech recognition using ambiguous or phone key spelling and/or filtering
US7526431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Dec 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/19
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Alphabetic filtering of the speech recognition of words uses a key press to indicate a desired character in an alphabetic filter string, where each key press represents two or more letters. The key presses can be disambiguated by recognizing a key-disambiguation utterance in association with a given key press. A user can select a desired recognition candidate from a choice list produced by such filtered word recognition. Ambiguous alphabetic filtering can be performed iteratively in response to the addition of successive ambiguous key presses. A user can select to re-recognize the utterance using filtering based on ambiguous key input after seeing the results of recognition without such filtering. Unambiguous alphabetic filtering can be performed by using multiple presses of an ambiguous key to disambiguate which letter is intended. A user can select between entering text by either large vocabulary speech recognition or by spelling text by pressing phone keys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.