Patent ID: 8370159

Claim:
A multi-layered speech recognition apparatus comprising: a client checking whether the client recognizes speech and recognizing the speech when the client itself can recognize the speech and transmitting the speech when the client itself cannot recognize the speech, according to a first checked result; and first through N-th (where N is a positive integer equal to or greater than 1) servers, wherein the first server receives the speech transmitted from the client, checks whether the first server recognizes the speech, and recognizes the speech when the first server itself can recognize the speech or transmits the speech when the first server itself cannot recognize the speech according to a second checked result, wherein an n-th (2≦n≦N) server receives the speech transmitted from an (n−1)-th server, checks whether the n-th server recognizes the speech, and recognizes the speech when the n-th server itself can recognize the speech or transmits the speech when the n-th server itself cannot recognize the speech according to a third checked result, and wherein the first server has a larger capacity of resource than the client and the n-th server has a larger capacity of resource than the (n−1)-th server.