Introduction To The Different Roles Of Different Interfaces On The TV (II)

Introduction To The Different Roles Of Different Interfaces On The TV (II)

VGA interface close-up

What needs to be mentioned here is that the VGA interface is an analog signal interface, so some TVs may not be able to achieve point-to-point when the flat panel TV is output. Therefore, I recommend users who use the VGA interface here. It is best to do a peer-to-peer test before purchasing.

LAN network interface: the Internet era is essential

With the continuous deepening of the network, our daily life has been closely related to the network. The lack of the network seems to be a little out of touch with the world. Therefore, most flat-panel TVs are equipped with a LAN network interface. RJ-45 is common on TV. Interface, commonly known as "Crystal Head".

Many flat-panel TVs are equipped with a LAN network interface.

The RJ-45 port is our common twisted pair Ethernet port. Because the twisted pair cable is mainly used as the transmission medium in Fast Ethernet, the RJ-45 port can be divided into 10Base-T networks according to the communication rate of the port. RJ-45 port and 100Base-TX network RJ-45 port two types. Among them, the RJ-45 port of the 10Base-T network is usually identified as "ETH" in the router, and the RJ-45 port of the 100Base-TX network is usually identified as "10/100bTX", which is mainly fast Ethernet now. Most router products are still adaptive with 10Mbps/100Mbps bandwidth.

RJ-45 crystal head

In today's network era, network interfaces are already indispensable. Although some high-end TVs have built-in WIFI functions, for some users without wireless network devices, the LAN network interface is still very important.

Displayport interface: a star with unlimited potential

DisplayPort is an interface specification approved by the Video Electronics Standards Association (VESA). DisplayPort does not require royalty fees and is designed to leapfrog between DVI and HDMI in several areas. DisplayPort utilizes the electrical layer of PCI Express, which currently operates at 2.5 Gbps, to achieve a total of up to 10.8 Gbps of bandwidth for four channels. DisplayPort will add support for HD audio signal transmission while transmitting video signals, while supporting higher resolution and refresh rate.

Displayport interface

DisplayPort has the advantages of high bandwidth, maximum integration of peripheral devices, internal and external interfaces, simplified design of related products, high scalability, and more reliable content protection technology.

Displayport interface close-up

Similar to HDCP in the consumer electronics arena, DisplayPort can also copy and protect HD video data with 128-bit AES encryption. In fact, VESA is also eyeing the consumer electronics market, claiming that DisplayPort can also easily connect devices such as TVs and DVD players. However, DisplayPort is currently only used on monitors and graphics cards, and will not be widely used in TVs in the future.

AV interface: the earliest realization of audio and video separation

The AV interface is an interface that appears earlier. It consists of three colors: red, white, and yellow. The yellow line is the video transmission line, and the red and white are responsible for the sound transmission of the left and right channels.

AV composite video interface

The AV composite video interface is an analog interface that realizes separate transmission of audio and video, which avoids image quality degradation caused by audio/video mixing interference.

AV line

Since the transmission of the AV interface is still a luminance/chrominance (Y/C) mixed video signal, it is still necessary for the display device to perform bright/color separation and chrominance decoding to image, and the process of mixing and then separating is inevitable. It will cause loss of color signal, and the chrominance signal and the luminance signal will also have a great chance to interfere with each other and affect the image quality of the final output.

S-terminal interface: separation of chromaticity and brightness

The S-terminal full name is SeparateVideo, the S-Video connection specification is a specification developed by the Japanese, and S refers to "SEPARATE", which separates the luminance and chrominance output, avoiding the brightness and brightness of the mixed video signal output. The mutual interference of chromaticity.