Problem to be Solved To provide a helical capacitor for controlling a high-frequency power which flows in power lines, and a manufacturing method of the helical capacitor. The heat transfer tube groups each includes a plurality of heat transfer tubes each having a forward passage part, a backward passage part, and a bent tube part. If two PPP sessions are active for a given IP communication, and one PPP session is not lost, the PDSN associated with the active PPP session sends a correction message to ignore any notification message sent by the other PDSN. The interface module couples the baseband processing module to the RF section. Thus it is possible to provide a display device having a high reliability and a method of driving the same.