Establishing a preferred mode of interaction between a user and a multimodal application, including evaluating, by a multimodal application operating on a multimodal device supporting multiple modes of interaction including a voice mode and one or more non-voice modes, user modal preference, and dynamically...http://www.google.de/patents/US8145493?utm_source=gb-gplus-sharePatent US8145493 - Establishing a preferred mode of interaction between a user and a multimodal application
