| 摘要 |
PURPOSE:To make monitoring, recording and reproduction at all times for a plurality of television cameras with one transmission line, VTR and video monitor, by providing a specific video switching device, a pulse code generator, a pulse decoder and a camera selector. CONSTITUTION:A plurality of television cameras 1, a video selector 5 switching the video signals in the field period, and a pulse code generator 10 giving a television camera discrimination pulse code to the video signal, are provided. Further, a VTR2, a pulse decoder 13 detecting the pulse code of the video signal and decodig it, and a camera selection commander 15 designating a television camera to be displayed, are provided. Moreover, a video gate pulse generator 14 generating a gate pulse to gate the video signal of a specified television camera with the selection signal, a video gate circuit 11 gating the video signal with the pulse, a video memory 12 and a video monitor 3 are provided. |
