Video signal transmission method, device, system and terminal

An apparatus for transmitting a video signal, comprising:

• a separation module configured to separate a current raw digital video signal acquired by a video camera core into a luminance signal and a chrominance signal;
• a conversion module configured to convert the luminance signal and the chrominance signal into an analog video signal;
• a transmission module configured to transmit the analog video signal to a master control chip board through an electrically-conductive slip ring;
• and
• a recovery module configured to convert the analog video signal back into the current raw digital video signal in the master control chip board.

A system for transmitting a video signal, comprising:

• a camera video core, an encoder, a digital-to-analog converter, an electrically-conductive slip ring, and an analog-to-digital converter and a decoder disposed in a master control chip board, wherein:
• the camera video core is configured to acquire a current raw digital video signal;
• the encoder is configured to separate the current raw digital video signal acquired by the camera video core into a luminance signal and a chrominance signal;
• to convert together with the digital-to-analog converter the luminance signal and the chrominance signal into an analog video signal;
• and to transmit the analog video signal to the master control chip board through the electrically-conductive slip ring;
• and
• the analog-to-digital converter and the decoder disposed in the master control chip board are configured to convert the analog video signal back into the current raw digital video signal.