Methods and systems for allowing a contents list of a video camera recorder to be smoothly displayed on a television receiver and improve the performance of a selecting operation on video content by a user. A video camera recorder (source device) 10A and a television receiver (sink device) 30A are connected through an HDMI cable 1. The video camera recorder 10A is provided with an HDMI transmission unit (HDMI TX) 28 and a high-speed data line I/F 28A. The television receiver 30A is provided with an HDMI reception unit (HDMI RX) 32 and a high-speed data line I/F 32A. In response to a transmission request from the television receiver 30A side, the video camera recorder 10A transmits, at high speed, additional information (contents list and thumbnail data) to the television receiver 30A by using a high-speed data line constituted by specific lines of the HDMI cable 1.