Patent ID: 8538759

Claim:
A speech recognition system installed in a terminal coupled to a server via a network, wherein: the terminal holds map data including a landmark; the speech recognition system manages recognition data including a word corresponding to a name of the landmark included in the held map data, and sends update area information indicating an area of the map data to be updated and update data on the area indicated by the update area information to the server; the server is configured to: generate, in a case of which recognition data of the area indicated by the update area information sent from the terminal has been changed, after a time indicated by the update data sent from the terminal, difference data between latest recognition data and recognition data corresponding to the area indicated by the update area information at a time indicated by the update data; and send the generated difference data to the terminal along with map data on the area indicated by the update area information; the terminal updates the map data held in the terminal based on the map data sent from the server; and the speech recognition system updates the recognition data managed by the terminal based on the difference data sent from the server; wherein: the recognition data includes confusion information, the confusion information including a confusion word having a tendency to cause a recognition error with the word corresponding to a name of the landmark, and a confusion score which represents the tendency of the confusion word to cause recognition error; the server sends the difference data including the confusion information to the terminal; and the speech recognition system updates the confusion information included in the recognition data held by the terminal based on the confusion information sent from the server.