| 摘要 |
<p>PURPOSE:To realize a diverse communication configuration by operating the through relay of a signal terminating an SDH line, and a branch relay, and exchange or the like between the video signal of its own station and an attendant signal corresponding to it, and between the video signal from the other station and the attendant signal corresponding to it. CONSTITUTION:As for a reception side device RSH 2, an optical signal from an optical cable is converted into an electric signal by an optic/electric converting board OR 30, separated by a separating board DMUX 31, and the separated signal is applied to a channel switch CHSW 32. An output from the switch 32 is outputted through a receiving board VR 33 as for an NTSC system TV, and transmitted to an HDTV transmitter 36 as for an HDTV. And also, voice data or facsimile transmission data are outputted through an attendant signal receiving board IFR 36. And also, a signal inputted from a channel switch 18 is applied through an elastic memory ES 37 for operating a frame phase matching. Thus, the shift of the head of the data can be prevented.</p> |
