Patent ID: 7376753
Filing Date: 2008-05-20
Classification: A63F,H04H,H04N

Abstract:
1. A terminal devices synchronizing method for synchronizing a plurality of terminal devices interconnected through a network, Each of said plurality of respective terminal devices comprising vertical synchronizing signal generating means for generating vertical synchronizing signals, and control means for making synchronization control operations and data communication, based on the vertical synchronizing signals, respectively, wherein the vertical synchronizing signal generating means comprises a vertical synchronizing counter, a horizontal synchronizing counter, and a reset circuit for resetting both the vertical synchronizing counter and the horizontal synchronizing counter, the respective terminal devices extract a synchronizing signal from signals wirelessly inputted from the outside other than the respective terminal devices, when the synchronizing signal is extracted, the reset circuit of the respective terminal devices reset both the vertical synchronizing counter and the horizontal synchronizing counter in synchronization with the synchronizing signal, and the vertical synchronizing signal generating means of the respective terminal devices output the synchronizing signal as a vertical synchronizing signal, when the synchronizing signal is not extracted, the vertical synchronizing signal generating means of the respective terminal devices output a back-up vertical synchronizing signal, and the control means of the respective terminal devices make synchronization control operation and data communication, based on the vertical synchronizing signal or the back-up vertical synchronizing signal.