Patent ID: 8948413
Filing Date: 2015-02-03
Classification: G10K

Abstract:
1. An input switching apparatus comprising: a resistance provided between a signal input line connected to a connector terminal corresponding to a plug terminal connected to an input device and a voltage supply line that supplies voltage to the input device via the signal input line, the connector terminal being one of the connector terminals provided on a connector that supports a multipolar plug; circuitry configured to perform as a detection section connected to the signal input line, the detection section detecting whether the multipolar plug is connected by observing a change of voltage of the signal input line; an open switch provided between a connection point of the resistance on the side of the voltage supply line and an adjusting resistance provided on the voltage supply line, the adjusting resistance adjusting the voltage; and circuitry configured to perform as a control section that closes the open switch when the detection section detects that the multipolar plug is connected based on the change of the voltage of the signal input line, wherein the resistance and the adjusting resistance are commonly connected to the signal input line.