Patent ID: 7694032

Claim:
A Universal Serial Bus (USB) apparatus connectable to an external host device, the apparatus comprising: a USB connector to which a USB cable connected to the host device is connected; and a switching unit to switch between first and second operation modes by controlling power lines and data lines of the USB cable via the USB connector, the first operation mode being a mode in which data communication with the host device is enabled, and the second operation mode being a mode in which an operation depending on a user input is enabled and data communication with the host device is disabled; wherein power can be charged from the host device in both the first operation mode and the second operation mode, and wherein, when the switching unit switches from the first operation mode to the second operation mode, the data lines are disconnected, after a predetermined time period elapses after the data lines are disconnected, the power lines are disconnected, and once the data lines and the power lines have been disconnected, a signal to re-connecting the power lines is output.