Patent ID: 9563246
Date: 2017-02-07
CPC Classifications: G06F

Claim:
1. An interface device connecting a multimedia player and an external device, comprising: a port unit in which the external device is connected, and configured to transmit a first current transmitted from the multimedia player to the external device; a regulation unit configured to regulate a current of external power into a second current; a hub unit configured to receive a mode selection signal of the external device from the multimedia player, and select a first mode of simultaneously performing data communication and a charge or a second mode of performing only the charge, according to the received mode selection signal; and a selection unit configured to receive the mode selection signal, and switch the first current transmitted to the port unit to the second current based on the received mode selection signal, wherein the hub unit is further configured to perform universal serial bus (USB) communication with the multimedia player and the selection unit, and transmit a voltage signal transmitted via a VBUS of a USB connector unit of the multimedia player to the selection unit, and the voltage signal transmitted through the VBUS is the mode selection signal of the second mode.