Abstract: Disclosed are a video signal attenuation equalization circuit, a video signal processing apparatus, and a control device and method, which are used for solving the problem that the transmission of an analogue video signal is distorted after the analogue video signal is transmitted by a coaxial cable, so as to guarantee low signal distortion after the video signal is transmitted at a long distance.

Abstract: An optical component, including: a component base, a transmitter module connected to the component base, a receiver module, and a pigtail, where: the component base has a cavity, and a wave filtering sheet is provided inside the cavity; the transmitter module is configured to transmit a first optical signal to the pigtail; the receiver module is configured to receive a second optical signal from the pigtail; the wave filtering sheet is configured to transmit the first optical signal transmitted by the transmitter module, to enable the first optical signal to enter the pigtail; and is further configured to reflect the second optical signal received by the pigtail to the receiver module; and a reflecting light guide through-hole is opened on the component base along an optical path direction that the light filtering sheet reflects the first optical signal.

Abstract: A method and an apparatus for sending and receiving audio data, so as to solve the problem that in the prior art, a simulating audio and video transmission system is complex in cable connection structure. The audio data is overlaid at a preset position of a video blanking interval of video data, sending and receiving of audio signals are carried out, and co-cable transmission of the audio and video data can be achieved.

Abstract: Disclosed are a high-definition digital video signal transmission method and device, a high-definition digital video camera and a video acquisition device. The technical solution provided in the embodiments of the present invention comprises: transcoding a high-definition digital video signal in accordance with a line-by-line sequence at a sending end to obtain an analogue video line signal, and sending analogue video line data which is obtained by conversion; and receiving the analogue video line data at a receiving end, and conducting decoding conversion on the received analogue video line data to obtain high-definition digital video line data. The present invention can convert a high-definition digital video signal into an analogue video signal to conduct transmission, thereby being able to solve the problem that a high-definition digital video signal cannot be transmitted for a long distance in the existing high-definition digital video monitoring technology.