Patent ID: 7499471

Claim:
A TDM (Time Division Multiplexing) system multiplexing digital broadcast and communication signals based on different synchronous signals in a broadcast/communication convergence system using an FTTH (Fiber To The Home) system, said system including a transmission frame comprising: a framing bit field for identifying a start and end of the TDM frame seamlessly provided; two MPTS (Multiple-Program Transport Stream) fields respectively having at least one bit assigned for digital broadcast data transmission wherein an amount of input digital broadcast data is adjusted according to a difference between a multiplexing rate and an input rate associated wit the digital broadcast data in the digital broadcast data transmission, each of the MPTS fields comprises: at least one data field into which the digital broadcast data is inserted in a predetermined bit unit, the data field having the predetermined bit unit; at least one stuffing control field respectively having one bit inserted in the at least one data field and being used to compare the multiplexing rate with the input rate; a 1-bit stuff field determined by the presence of data insertion according to a value of the at least one stuffing control field; and a remaining data field into which digital broadcast data is inserted, the remaining data field having remaining bits from which the at least one data field, the at least one stuffing field and the stuff field are subtracted among the total number of bits assigned to the MPTS field; and a fast Ethernet field having at least one bit assigned for communication data transmission.