With the continuous advancement of modern technology, television has also made considerable progress. Of course, not only is the panel size and picture quality improved, but also some of the TV's interface parts are becoming more and more dazzling. Occasionally, one does not pay attention and finds itself. Was left behind by the times. It is believed that many people will face the reluctant purchase of the TV because they have been confused by the interface on their back. They only know about the AV interface and the TV interface. If we say the TV interface, I believe most people Still confused, in fact, TV interface is the cable interface / antenna interface. Today, the author has popularized the TV behind these interfaces for everyday use.
TV interface
TV TV interface
TV interface, also known as RF RF input, is undoubtedly the earliest interface on the TV. The imaging principle of the TV interface is to combine the video signal (CVBS) and the audio signal (Audio) after being encoded and output, and then perform a series of separation/decoding processes within the display device to output the image. Due to the need for more steps for video, audio and video hybrid encoding, it will cause the signal to interfere with each other, so its picture quality output quality is the worst among all interfaces.
AV interface
AV interface
The AV interface, also known as (RCARCA), can be regarded as an improved interface for TV. The appearance is very different. It is divided into 3 lines, which are: audio interface (red and white lines, composed of left and right channels) and video interface (yellow). The AV output is still a video signal that mixes luminance and chrominance, so the display device still needs to separate the luminance and color, and the decoding can be imaged. This approach will inevitably cause loss of picture quality, so the AV interface's picture quality is still not satisfactory. The connection is very simple. Simply connect the AV cable of 3 colors to the interface of the 3 colors on the TV.
S terminal
S terminal
The S terminal can be said to be the reform of the AV terminal. In the transmission of signals, the chroma and brightness are no longer mixed and output, but the signal transmission is separated. Therefore, we also call it the "two-component video interface" compared with the AV interface. Terminals are not mixed transmission of chrominance and brightness. This avoids image distortion caused by signal interference in the device and can effectively improve the clarity of the picture quality.
Color difference component interface
Color difference component interface
For color difference, the current application may not be very common, the main reason is that some CRT TVs do not provide
Color difference component input interface. Simply put, compared to the AV and S terminals in the past, the color difference is input by dividing the signal into three primary colors: red, green, and blue. We know that red, green and blue are the three primary colors in the principle of color display, which are called three primary colors. By extracting these 3 colors directly, the picture will be more clear and vivid. The color difference connection also requires two independent audio lines, similar to the red and white lines in the AV, which are responsible for the left and right channels, respectively.
VGA interface
VGA interface
VGA interface, also known as (S-Dub), this is derived from the computer's input interface, because the CRT monitor can not directly accept the input of digital signals, so the graphics card can only take the analog signal input to the display to get the picture. VGA is the interface that transfers analog signals to the monitor.
DVI interface
DVI interface
DVI interface and VGA are both the most commonly used interfaces in computers. Unlike VGA, DVI is an all-digital transmission interface, so it guarantees completely uncompressed transmission in picture quality. But it does not mean that it is only an interface in the computer, in fact, regardless of VGA and DVI applications in other areas are very extensive, such as digital television and so on.
HDMI interface
HDMI interface
The HDMI interface is the most recent interface. It uses the same digital signal transmission as DVI, but the difference is that the HDMI interface not only can provide all-digital video signals, but also can transmit audio at the same time. It's as if it's back to a wired RF interface, but it's just different. Using all-digital signal transmission doesn't cause video and audio interference like RF to cause poor picture quality.
DisplayPort interface
DisplayPort interface interface
DisplayPort is also a high-definition digital display interface standard that can connect computers and monitors, as well as computers and home theaters. In May 2006, the Video Electronics Standards Association (VESA) identified the 1.0 version of the standard and upgraded it to version 1.1 six months later, providing support for HDCP. Version 2.0 is also planned for launch this year. As a competitor to HDMI and UDI and a potential successor to DVI, DisplayPort has won the support of AMD, Intel, NVIDIA, Dell, Hewlett-Packard, Lenovo, Philips, Samsung and other industry giants, and it is free to use, unlike HDMI. High licensing fees. AMD's roadmap shows that the company will start supporting DisplayPort early this year and early next year to replace HDMI.
USB interface
USB interface
Universal Serial Bus (USB) is a serial bus standard for connecting external devices. USB20D is widely used on computers, but it can also be used on set-top boxes and game consoles, supplementing the standard On-The-Go ( OTG) makes it possible to exchange data directly between portable devices.
RJ45 network interface
RJ45 network interface
RJ45 is a type of connector (for example: RJ11 is also a type of connector, but it is used on the phone); RJ45 is usually used for computer network data transmission, the connector's line has a straight line (12345678 corresponds to 12345678) There are two kinds of cross lines (12345678 corresponding to 36145278). Generally speaking, it is the network interface.
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