| 摘要 |
PURPOSE:To avoid the expansion of a fault with a simple operation for a transmission switcher system of a primary control room at a broadcast station, by actuating said system with a control signal delivered from an automatic program controller. CONSTITUTION:In the diagram the output signal of a manual control board 6 is fed once an automatic program controller 1 or 2 via a system changeover switch 8. The cntroller 1 delivers a start command to a VTR, for example, with the output signal of the board 6 and then delivers a switching control command to an emergency switcher 7 in the lapse of the time during which the VTR reaches the normal revolutions. In this case, a video/audio signal given from the VTR is fed into an input signal a'' and then delivered selectively. At the same time, a transmission switcher 5 switches the cross point with a control signal given from the controller 1 and delivers selectively an emergency signal. |
