Siri's managed to make it into several Apple devices now, so it doesn't shock us to spy the company's attempt to patent the polite (somewhat frosty) tones of its voice navigation system. A pretty deep patent application filed today describes an "intelligent Automated Assistant," with the claims describing an application that is guided through the user's speech -- and all wrapped in a "conversational interface." So far, so Siri. The filing elaborates on Apple's earlier filings, explaining how this digital assistant furthers the users' demands with additional requests for speech-based
