| 摘要 |
electrical engineering; control and observation systems. SUBSTANCE: switchboard has communication line, switching device incorporating set of switching matrices, and control panels with infrared detector that functions to receive control commands from remote-control panel of userÊs television set. Switchboard provides for using unlimited number of control panels and for their concealed mounting; number of cables required and their length are also reduced. EFFECT: simplified design; enlarged functional capabilities. 7 cl, 7 dwg
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