Video signal and tally signal switcher system

Abstract

Relating to a switcher system that is capable of reducing time and trouble of setting video equipment. According to the present invention, there is provided a switcher system having a switcher and a plurality of view finders. The switcher outputs a digital video signal having a tally signal superimposed thereon. Each of the view finders has an external digital video input unit, which receives input of the digital video signal, and a tally display control unit, which controls tally display based on the tally signal superimposed on the digital video signal.

1 . A system comprising first and second devices, wherein:
 the first device is configured to superimpose a tally signal, which has an identifier, on a digital video signal, and   the second device is configured to control tally display based on the tally signal.   
     
     
         2 . The system of  claim 1 , wherein the first device is a switcher, and the second device is a display device. 
     
     
         3 . A switcher system comprising a switcher and a plurality of display devices, wherein:
 the switcher outputs a digital video signal having a tally signal superimposed thereon;   each of the display devices has:
 an external digital video input unit that receives input of the digital video signal, and 
 a tally display control unit that controls tally display based on the tally signal; and the switcher has: 
   a digital video input unit that receives input of a plurality of digital video signals;   a video selecting unit that selects one of the digital video signals received by the digital video input unit;   a signal superimposing unit that superimposes the tally signal, which has an identifier, on the digital video signal selected by the video selecting unit; and   a digital video output unit that outputs the digital video signal having the tally signal superimposed thereon.   
     
     
         4 . A switcher comprising:
 a digital video input unit that receives input of a plurality of digital video signals;   a video selecting unit that selects one of the digital video signals received by the digital video input unit;   a signal superimposing unit that superimposes a tally signal, which has an identifier, on the digital video signal selected by the video selecting unit; and   a digital video output unit that outputs the digital video signal having the tally signal superimposed thereon.   
     
     
         5 . The switcher of  claim 4 , wherein
 the signal superimposing unit superimposes an audio signal on the digital video signal; and   the digital video output unit outputs the digital video signal having the tally signal and the audio signal superimposed thereon.