Patent ID: 7434249
Filing Date: 2008-10-07
Classification: H04J,H04N

Abstract:
1. A fiber to the home (FTTH) system based on a passive optical network, comprising: an optical line terminal block comprising a video-optical line terminal (V-OLT) adapted for receiving at least one of a cable television broadcast (CATV), a master antenna television signal (MATV) and a satellite broadcast, and wherein the optical line terminal (OLT) is adapted for receiving a data service, said optical line terminal block providing an output of optical signals from one or more of the video-optical line terminal (V-OLT) and the optical line terminal (OLT); a multiplexing division couplet for switching among the optical signals of the (V-OLT) and (OLT), the video-optical line terminal receiving the cable TV signal, a master antenna TV signal, and satellite broadcasting optical signals input from a broadcasting service network so as to output received signals as a first optical signal having a predetermined wavelength band, wherein the optical line terminal (OLT) includes a first downstream data optical transmitter and a first upstream data optical receiver outputting a data communication signal input from a data service network as a second optical signal having different wavelength from the video-optical line terminal; an optical network terminal (ONT) block including a video-optical network terminal and an optical network terminal for splitting multiplexed data communication signals, cable TV broadcast signals, master antenna TV broadcast signals, and satellite broadcasting optical signals, the video-optical network terminal processing the split cable TV broadcasting, master antenna TV and satellite broadcasting optical signals so as to provide subscribers with the split cable TV broadcast signals, master antenna TV signals and satellite broadcasting optical signals, wherein the optical network terminal (ONT) includes an upstream data optical transmitter and a downstream data optical receiver so as to process split data communication signals; and an optical distribution network (ODN) connecting the optical line terminal block to the optical network terminal as an optical transmission medium; wherein the video-optical line terminal (V-OLT) includes a master antenna TV and satellite optical receiver for receiving the master antenna TV and satellite broadcasting optical signals so as to convert the master antenna TV and satellite broadcasting optical signals to electric signals and a master antenna TV and satellite optical transmitter for outputting an optical signal having a predetermined wavelength band corresponding to a signal outputted from the master antenna TV and satellite optical receiver, wherein the predetermined wavelength band of the optical signal output by the master TV and satellite transmitter has a different wavelength than the optical signals received by the master TV and satellite optical receiver; wherein the predetermined wavelength band is a band of 1550 nm, and wherein the optical signal received by the master TV and satellite optical receiver are 1310 nm.