Patent ID: 7567546

Claim:
A network system comprising: a transmitter device for transmitting real-time data containing contents data; a transmission line for transmitting the real-time data transmitted from the transmitter device; a bridge device for receiving the real-time data transmitted via the transmission line; a wireless network for transmitting the data transmitted from the bridge device; and a receiver device for receiving the data transmitted via the wireless network from the transmitter device, wherein the bridge device includes a transmission-line receiving unit for receiving the real-time data transmitted via the transmission line, a reference time generator for generating a reference time independently from the transmitter device, and a network transmitting unit for transmitting, via the wireless network, the reference time and the real-time data received by the transmission-line receiving unit, and wherein the receiver device includes a first network receiving unit for receiving the real-time data and the reference time transmitted via the wireless network from the bridge device, a first internal time controller for generating an internal time based on the reference time received by the first network receiving unit, and a real-time data processor for decoding the real-time data received by the first network receiving unit as to reproduce the contents data, and outputting the reproduced contents data based on the internal time generated by the internal time controller.