Zhejiang Dahua Technology Co., Ltd.

Liquan Fu

Jun Wu

Jun Yin

Jian Wu

Xingming Zhang

Jiangming Zhu

Zhicheng Ye

Bingyun Lv

Chenge Liao

Zhuqiang Bao

Yun Xie

Provided in embodiments of the present invention are a method and device for implementing high-definition image capturing, comprising: collecting and acquiring image data of a first set format by using an image sensor, image processing the image data then encoding into modulated data of a second set format, converting the modulated data into an analog electric signal of a third set format by using a synchronous clock, and filtering the analog electric signal by using a filter circuit then transmitting via a coaxial cable. The above series of operations is capable of implementing the collection and processing of a high-resolution video, and solves the problem that existing high-definition camera are incapable of ensuring timeliness during a video transmission process and provides poor stability and reliability, while at the same time, employment of the present invention also allows an existing analog camera to use a cable device for video transmission, thus implementing full utilization of existing resources.

Method and device for implementing analog high-definition image capturing

The invention relates to the art of communications and particularly to a video signal transmission method, apparatus, system and terminal, where the method includes: separating a current raw digital video signal acquired by a video camera core into a luminance signal and a chrominance signal; converting the luminance signal and the chrominance signal into an analog video signal; transmitting the analog video signal to a master control chip board through an electrically-conductive slip ring; and converting the analog video signal back into the current raw digital video signal in the master control chip board. With the video signal transmission method, apparatus, system and terminal according to embodiments of the invention, the integrity of the transmitted video signal can be improved to thereby guarantee the quality of the video signal.

Video signal transmission method, device, system and terminal

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.

Method and apparatus for sending and receiving audio data

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 analog video signal is distorted after the analog 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. The video signal attenuation equalization circuit provided in the embodiments of the present invention comprises: a signal driving circuit, an equalization unit and an analog switch unit, wherein the signal driving circuit is connected to the equalization unit and the analog switch unit, and is used for receiving and strengthening an initial video signal, and sending the obtained strengthened initial video signal to the equalization unit and the analog switch unit; the equalization unit is used for performing attenuation equalization on the strengthened initial video signal according to the triggering of a control signal, and after the attenuation equalization sending the video signal to the analog switch unit; and the analog switch unit is used for outputting the strengthened initial video signal or the video signal sent by the equalization unit after the attenuation equalization according to the control of the control signal.

Video signal attenuation equalization circuit, processing apparatus, and control device and method

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.

High-definition digital video signal transmission method and device, camera and acquisition device

Provided in embodiments of the present invention are a method and device for transmitting a high-definition video signal, comprising: isolating from the high-definition video signal a brightness signal and a chrominance signal, and, by using an analog signal transmission mode, using non-overlapping frequency hands to transmit respectively the brightness signal and the chrominance signal. The solution of the present invention employs the analog signal transmission method, utilizes independent frequency bands to transmit respectively the brightness signal and the chrominance signal, and ensures that the brightness signal and the chrominance signal do not affect each other, thus ensuring video quality and timeliness of the high-definition video signal when transmitted over a long distance.

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Hangzhou, China

Liquan Fu