Each tuner at least automatic joint possible multiple tuner television reception system null at least in one antenna regardless of to the number of antennas which it includes

摘要

As for this invention, the 1st tuner (2), and, selectively, through means for switching (6), when the expedient which is detected whether or not the 2nd tuner (2 ') the 1st transmitter which is connected (1) and, the 2nd transmitter which selectively, the 2nd tuner (2 ') is connected (1 ') with, the 2nd transmitter (1 ') is operational, (11) with, the 2nd transmitter is operational, the 2nd tuner (2 ') the 2nd transmitter (1 ') to connect,When the transmitter of 2 is not operational, in order the 2nd tuner to connect to the 1st transmitter (1), means for switching (6) it relates to the system which includes with the expedient which is operated. This invention, although each tuner, is connected to one antenna at least automatically, is useful.