HD video capture card, also known as audio and video capture card, is a computer external device, mainly used to input video and sound signals into the computer for editing, compression and storage. It usually contains one or more video and audio input ports, and can receive signals of multiple transmission protocols, such as VGA, DVI, HDMI, etc. The working principle of HD capture card is roughly that the ana-log signal is converted into a digital signal after A/D sampling, written into SDRAM as cache through FPGA, and then read out the collected and compressed data from SDRAM through FPGA and transmitted to the host computer through PCI bus, and the host computer transmits the data and processes it.
The application industry of HD video capture card is very wide, mainly covering the following fields:
1. Medical imaging
In the medical field, HD video capture card is widely used in HD medical endoscope, HD remote surgery, HD industrial microscope and other scenes. Hospitals have strict requirements for surgical videos, requiring video capture cards to have good restoration capabilities in details such as saturation and color to assist doctors in precise medical operations. (Source: DAIPU)
2. Intelligent Transportation
High-speed image acquisition cards are an important part of intelligent transportation systems. They provide accurate data for analysis and decision-making to traffic management departments by capturing high-definition images of traffic conditions in real time. In addition, image acquisition cards also play a key role in self-driving cars and artificial intelligence-assisted driving, helping cars identify road signs, obstacles and other vehicles to improve road safety. (Source: Baijiahao)
3. Industrial Inspection and Measurement
In industrial environments, high-definition video acquisition cards are used for high-speed acquisition of high-resolution images to help achieve industrial automation and maximum output. They are able to manage the loading of image data from cameras to PC memory, use direct memory access (DMA) controllers to avoid CPU overload, and provide multiple trigger modes to support complex imaging needs. (Source: Baijiahao)
4. Remote Education and Training
High-definition video acquisition cards support high-definition video conferencing and screen live broadcasting, providing strong technical support for remote education and training. By acquiring and transmitting high-definition video signals, teachers can share teaching content in real time, realize multimedia teaching and remote teaching, and improve teaching effectiveness and coverage. (Source: Baidu Encyclopedia)
5. Security monitoring
In the fields of urban public security management, commercial operation supervision, etc., HD video capture cards are an important part of the security monitoring system. They capture and transmit video signals in real time through HD cameras installed in public places, helping to improve crime prevention capabilities and ensure public safety. (Source: Renren Library)
6. Media and entertainment
For video creators, game anchors and other practitioners in the media and entertainment industry, HD video capture cards are indispensable productivity tools. They support HD recording and live broadcasting, helping creators and anchors to achieve high-quality audio and video content production and transmission. (Source: WeChat public platform)
7. Other fields
HD video capture cards are also widely used in microscopic imaging, analytical measurement, biomedicine, machine vision, online live broadcasting, VOD on demand, security monitoring, traffic toll collection and other fields, providing these industries with high-quality image and video acquisition solutions.
The application industries of high-definition video capture cards cover medical imaging, intelligent transportation, industrial inspection and measurement, distance education and training, security monitoring, media and entertainment, etc., providing important technical support for the development of these industries.
