DATA MULTIPLEXER, DATA DEMULTIPLEXER AND FPU RECEPTION SUPPORT INFORMATION TRANSMISSION APPARATUS

PROBLEM TO BE SOLVED: To provide a signal multiplexer by which, when making support information into a TS frame in an FPU receiver, even if a format in the FPU receiver is different, the support information can be made into the TS frame in inexpensive configuration.SOLUTION: A data multiplexer 12 is disclosed which is provided in a relay base station 3 in a transmission system where a video TS signal from an FPU transmitter 2 is transmitted to a TSL receiver 21 of a broadcasting station via an FPU receiver 11 and a TSL transmitter and the FPU receiver is controlled via a TCP/IP line 6 by an FPU control device 23 of the broadcasting station. The data multiplexer 12 inputs the video TS signal from the FPU receiver, UDP data obtained by making support information representing an operation state of the FPU receiver into an UDP frame in the receiver and TCP data such as command information or status information. The UDP data are made into a TS capsule and an UDP TS signal made into the TS capsule and the video TS signal are multiplexed and outputted. 【課題】ＦＰＵ受信機において支援情報をＴＳフレーム化する際に、当該ＦＰＵ受信機でのフォーマットが異なる場合でも、安価な構成で対処し得る信号多重装置を提供する。【解決手段】ＦＰＵ送信機２からの映像ＴＳ信号をＦＰＵ受信機11及びＴＳＬ送信機を介して放送局のＴＳＬ受信機21に送信するとともに、放送局のＦＰＵ制御装置23によりＦＰＵ受信機をＴＣＰ／ＩＰ回線６を介して制御する伝送システムにおける中継基地局３に設けられるデータ多重装置12であって、ＦＰＵ受信機からの映像ＴＳ信号、ＦＰＵ受信機の動作状態を表す支援情報が当該受信機でＵＤＰフレーム化されてなるＵＤＰデータ、及びそのコマンド情報、ステータス情報などのＴＣＰデータを入力し、上記ＵＤＰデータについてはＴＳカプセル化するとともに、このＴＳカプセル化されたＵＤＰ・ＴＳ信号と上記映像ＴＳ信号とを多重化して出力するようにしたもの。【選択図】図１