FIELD: physics, communication.
SUBSTANCE: invention relates to a transmission method/device which transmits digital signals, such as video signals, over a data channel using differential signals, for example according to the high-definition multimedia interface (HDMI) standard. A source device 110 and a consumer device 120 are connected by an HDMI cable 200. The source device 110 is compatible with both the current HDMI and a new HDMI. The number of differential signal channels for transmitting digital signals, such as video data, is equal to three in the current HDMI, but is equal to six, for example, in the new HDMI. In a case when the cable 200 is compatible with the new HDMI and the consumer device 120 is compatible with the new HDMI, the control module 113 of the source device 110 controls the data transmission module 112 for operation in a new HDMI operating mode. In a case when the control module 113 determines that at least the consumer device 120 is compatible with only the current HDMI or at least the cable 200 is compatible with the current HDMI, the control module 113 controls the data transmission module for operation in the existing HDMI operating mode.
EFFECT: enabling signal transmission with a high data rate while providing backward compatibility.
25 cl, 21 dwg
