Speech recognition is not revolutionary. Many years ago, IBM's speech recognition software had a good recognition rate on PCs.
Based on speech recognition, simple Intelligent Analysis and calling of system functions are not revolutionary. Google's Voice Action, Vlingo, and other independent companies are doing well.
However, judging from the current outbound video, Siri is not a simple combination of these known technologies.
Siri is more intelligent
In Vlingo, you say "Text Mike, Messages How are you .". Using Keyword matching can accomplish many things. Text is a command, and Messages is a keyword. Match the two words to know who to send and what to send.
Siri understands the context. You asked about the weather in Beijing and said, "How about Shanghai ?" He knows that you mean the weather.
A more striking example was presented before Apple acquired Siri. You say "I like a romantic place for Italian food near my office ".
Siri replied: "I am looking for a Italian specified ants which reviews say are romantic near your wok in San Jose... "
This answer shows that Siri understands romantic as an adjective. And I know that near my office is a place. In addition, the location of the previously stored user is found. Besides, he knows how to determine whether a restaurant is romantic! (Search for reviews)
If you say the same to Android Voice Action or Vlingo, you will know that Siri has intelligence that surpasses existing Apps.
Integrate Siri with the system more closely
Before the merger, Siri integrated a large number of network services (APIs. For example, OpenTable, Tickets.com, and Taxi Magic.
After Apple acquired Siri, it was already integrated into the system.
In the Siri video of iOS5, after a new short message is displayed, the interaction is initiated by Siri. It indicates that he has been resident in the system background and can take over important system functions. (Besides short messages, weather, clock, Maps, and so on)