Radio frequency interface (also called radio frequency interface, coaxial cable interface, closed circuit interface) belongs to analog signal interface, which is supported by all televisions. Radio frequency interface can generally be used to connect closed-circuit signals to watch TV programs.
AV interface, also called (rcarcarca), can be regarded as an improved interface of TV, and its appearance is very different. It is divided into three lines, namely: audio interface (red and white lines, forming left and right channels) and video interface (yellow).
Extended data:
AV interface has been widely used in the connection between VCD and DVD players and TV sets in the early days.
Wherein, the V interface is connected with mixed video signals and is a yellow socket; L interface is connected with left channel sound signal and white socket; R interface is connected with right channel sound signal and red socket. The composite video interface has two terminals: RCA terminal and BNC terminal. RCA terminal is usually called Lotus Head and Lotus Block, and BNC terminal is called BNC Head and BNC Block. RCA terminal can be used for composite video interface and audio interface. If used in audio interface, it is generally called 3.5 shower head (block).
It can be regarded as an improved interface of TV, and its appearance is very different. It is divided into three lines, namely: audio interface (red and white lines, forming left and right channels) and video interface (yellow).
Baidu encyclopedia-radio frequency
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