Solution background introduction:
As the first platform for people to obtain information, TV is irreplaceable. However, traditional TV can only be passively received, can not choose to watch, and the definition is not high; in addition, missed programs cannot be returned to watch. The existence of various problems has forced people to continuously explore new technologies in order to solve the various disadvantages of traditional television.
In recent years, with the advent of the Internet, network accessories have also emerged. One of them is Internet TV (ie, IPTV), which uses the IP network as the transmission medium. This Internet-born thing has also developed rapidly with the broadband network. IPTV uses televisions, personal computers, and handheld devices as display terminals and accesses broadband networks through set-top boxes or computers to implement services such as digital television, time-shift television, and interactive television. The emergence of Internet TV has brought a new way of watching TV. It has changed the passive TV viewing mode in the past, and realized that the TV can be watched on demand and stopped on demand.
The emergence of Internet TV has boosted the pace of information construction. While enriching network applications, it has saved costs and improved efficiency. Today, thirty years after reform and opening up, it is a wonderful interpretation of digital media's changing lives, and it must also Will completely change people's traditional habits of access to information.
Scheme system architecture diagram:
The core technology for realizing IPTV is that the computer collects the video signals. In this process, high-quality audio and video acquisition cards are needed to collect the TV signals into the computer. Meifit six-channel audio and video streaming media capture card, with leading technology architecture, based on A / V Codec + FPGA + DDR2 + PCI-E architecture, professional ADI / Wolfson video and audio capture chip, bringing higher quality audio and video Experience, the high-speed DDR2 frame buffer and the independently developed image DMA transmission module in the FPGA can eliminate the appearance of screen drawing. The FPGA originally used only in the high-end field brings stronger audio and video processing capabilities, "soft" "hardware", Hardware functions can be easily upgraded without hardware replacement. Capable of capturing 6 channels of composite video and 6 channels of unbalanced stereo audio at the same time, and can achieve hardware 5-Tap scaling, hardware picture clipping, picture inversion, hardware de-interlacing, hardware overlay, hardware gamma adjustment, high-quality sampling rate and high image quality Sampling accuracy guarantees high sharpness of the picture, high signal-to-noise ratio ensures minimum picture noise, high sound quality and high sampling rate ensure high sampling distortion, and high signal-to-noise ratio ensures that the sound is pure enough. The size of this high-performance audio and video streaming media capture card is only 123mmx69mm, which can be easily inserted into a 2U chassis and comes standard with a half-height PCI bezel. Provide complete drivers, set 10 years of experience in streaming media development, completely self-developed drivers under the standard AVStream driver for Windows, compatible with most Windows streaming media applications, customers do not need secondary development, all capacitors use Murata Taka High-quality ceramic chip capacitors, with 6-layer board design, have better signal quality than other products with 2-4-layer boards for continuous long-term full load testing, which meets the needs of 24 x7 use.