Signal input switching circuit, method of controlling signal input switching circuit, and display device

摘要

A signal input switching circuit (19) that reduces the occurrence of malfunctions arising due to crosstalk between switch circuits has a plurality of input terminals to which signals are applied as input from signal sources and further includes: a plurality of switch circuits (15 and 16) that supply signals received as input by way of any of the input terminals that was selected from among the plurality of input terminals; input control units (18) that are provided corresponding to each of the plurality of input terminals belonging to each of the plurality of switch circuits (15 and 16) and that control input of signals from signal sources by way of corresponding input terminals; an input acceptance unit (17) that accepts operation input; and a CPU (12) that, in accordance with input to the input acceptance unit (17), causes each switch circuit to select any of the plurality of input terminals belonging to that switch circuit and supply the signal that was received by way of the selected input terminal, and further causes input control units (18) corresponding to input terminals that were not selected to not supply signals from signal sources connected to the corresponding input terminals.

主权项

1. A signal input switching circuit, comprising:
a plurality of switch circuits, each switch circuit including a plurality of input terminals to which signals are respectively applied as input from different signal sources, and said each switch circuit supplying as output thereof a signal that applied as input by way of an input terminal selected from among the plurality of input terminals; input control units provided corresponding to each of the plurality of input terminals belonging to each of said plurality of switch circuits, each control unit controlling a presence of an input of signals from a signal source corresponding to the input terminal; an input acceptance unit that accepts an operation input signal; and a control unit that, in accordance with an input signal to said input acceptance unit, causes said each said switch circuit to select one of the plurality of input terminals belonging to that switch circuit, and to supply as an output signal thereof signals from the signal source as input by way of the selected input terminal, and that further causes said input control units corresponding to input terminals that were not selected by said operation input signal to control signal sources that are connected to the corresponding input terminals to not present signals.