2. The voice recognition system according to claim 1 , wherein said voice recognition device includes an input rule determinator that compares said client-side voice recognition result candidate with utterance rule patterns in each of which a predetermined key word is brought into correspondence with an utterance rule of said predetermined key word, and determines an utterance rule of said voice data, and wherein said recognition result integrator integrates said client-side voice recognition result candidate and said plurality of server-side voice recognition result candidates based on said client-side voice recognition result candidate, said plurality of server-side voice recognition result candidates, the detection result provided by said recognition result candidate comparator, and the utterance rule determined by said input rule determinator.
2. The voice recognition system according to claim 1 , wherein said voice recognition device includes an input rule determinator that compares said client-side voice recognition result candidate with utterance rule patterns in each of which a predetermined key word is brought into correspondence with an utterance rule of said predetermined key word, and determines an utterance rule of said voice data, and wherein said recognition result integrator integrates said client-side voice recognition result candidate and said plurality of server-side voice recognition result candidates based on said client-side voice recognition result candidate, said plurality of server-side voice recognition result candidates, the detection result provided by said recognition result candidate comparator, and the utterance rule determined by said input rule determinator. 3. The voice recognition system according to claim 2 , wherein said voice recognition device includes an input voice/recognition result storage that stores said voice data converted by said voice inputter and the voice recognition result decided by said recognition result integrator while bringing them into correspondence with each other, and a recognition result candidate corrector that acquires said plurality of server-side voice recognition result candidates corresponding to said voice data stored in said input voice/recognition result storage and generates a database when said voice recognition device is started, and that also compares the generated database with said plurality of server-side voice recognition result candidates received by said client-side receiver, and wherein said recognition result integrator integrates said client-side voice recognition result candidate and said plurality of server-side voice recognition result candidates based on a comparison result provided by said recognition result candidate corrector.