Patent ID: 8963364
Filing Date: 2015-02-24
Classification: B60R

Abstract:
1. A vehicle-mounted device comprising: a voltage detector comprising an input port connectable to a remote controller of a voltage dividing type adapted to output one of output voltages different from each other for each of key switches to be pressed by a user, the voltage detector being configured to detect through the input port an output voltage output from the remote controller; a pull-up resistor connected in series between the input port and a power supply supplying a voltage to the remote controller, the pull-up resistor having a variable resistance; a controller configured to control the pull-up resistor to have sequentially changed resistances in a course of pressing the key switches; and a processor configured to select a resistance of the pull-up resistor based on sets of output voltages given respectively for the resistances in the course of pressing the key switches, wherein the processor selects the resistance as a resistance of the pull-up resistor which makes a set of output voltages have largest differences between neighboring voltages in the sets of output voltages each comprising for one of the resistances a combination of an output voltage given in an off state with none of the key switches pressed and respective output voltages given for any one of the key switches.