Patent ID: 7391332

Claim:
A communication device operable to perform communication using a balanced transmission line, said communication device comprising: a transmitting unit operable to transmit a signal to the balanced transmission line; a control unit operable to control transmitting power put into the balanced transmission line by said transmitting unit; and a radiation information management unit operable to manage radiation information on radio wave radiation from the balanced transmission line, wherein said radiation information management unit comprises: a measuring unit operable to measure the radio wave radiation from the balanced transmission line, thereby outputting a measured radiation value; and a comparing unit operable to compare the measured radiation value with a predetermined reference value, thereby outputting a compared result, wherein said comparing unit informs said control unit of the compared result when the measured radiation value exceeds the predetermined reference value, and wherein said control unit controls the transmitting power put into the balanced transmission line by said transmitting unit, based on the compared result.