A method and apparatus are provided for broadcasting at least one complementary element corresponding to a content broadcast to a terminal. The controller card is configured to recognize communication protocols associated with any of the Type A-H and J signals of the Naval Tactical Data System, and to enable the communication of information between the matrix switch and interconnected peripheral devices, as well as any interconnected matrix switches. Circuit elements constituting a drive section of an upper arm drive circuit 212, a level shift circuit 20 including a current sensing circuit 210, a drive section of a lower arm drive circuit 222, and a drive signal processing circuit 224 are integrated and built in one high withstand voltage IC chip 200. Copy permission information of a blank tape loaded in the second digital VCR is discriminated and the second digital VCR records the AV data supplied from the first digital VCR based on the protective information and the copy permission information.