TRANSMITTING DEVICE, RECEIVING DEVICE, COMMUNICATION SYSTEM, DATA TRANSMISSION METHOD, DATA RECEIVING METHOD AND PROGRAMMES THEREFOR Russian patent published in 2013 - IPC H04N7/173 

FIELD: information technology.

SUBSTANCE: switching unit (32a) of a transmitting device selects one of a plurality of video data elements transmitted from a storage device (42) in accordance with video data assigned by a transmission data control unit (32i) and transmits said data to an IF unit (32b). The IF unit (32b) transits video data decoded by a decoding unit (113) through an output (335). Compressed video data transmitted from the switching unit (32a) are transmitted through an output (336). An output (335) is included in a first channel unit. If the IF unit (32b) is HDMI, for example, the output (335) is a TMDS channel output. The output (336) is an output which is included in a second channel unit and is connected to a backup line, an HPD line etc. The data transmission unit communicates with an external device through two pairs of difference transmission channels connected to a transmission channel.

EFFECT: efficient simultaneous transmission of multiple video data elements included in data which contain multiple content elements, notifying an external device on the status of the connection between a transmitting device and the external device based on constant bias potential of one of two pairs of difference transmission channels.

9 cl, 51 dwg