APPARATUS FOR CONTROLLING EXTERNAL EQUIPMENT

摘要

The present invention relates to a sub-device for controlling an external device. The sub-device comprises: a sensor unit configured to detect a rotation amount and a rotation direction of the sub-device or detect a straight movement amount or a straight movement direction of the sub-device; and a control signal generating unit configured to generate a control signal. Therefore, the sub-device enables a user to intuitionally adjust a channel and a volume of the external device.