HDMI is currently the most popular audio and video interface in the AV market. Its applications cover a wide range of areas such as TVs, PC computers, monitors and mobile phones. With the upgrade of HDMI 2.1 version, we can see that its application scenarios increasing again, and 2021 can be said to be the first year of HDMI 2.1 displays. With the successive popularity of PS5, XSX mainframes and RTX3080, 3090 and other graphics cards, add the return of the HDMI interface for MacBookPro, HDMI 2.1 displays are starting to become more and more available on the market. and going into the first quarter of 2022, it is worth recalling that the market already has a variety of HDMI 2.1 4K high brush displays priced to cover a range of RMB3999 to RMB11999, the HDMI 2.1 interface is getting better and better.
HDMI cables has only one task in the entire audio-visual system is to transmit all the information that needs to be transmitted in a complete and error-free manner. The bigger bandwidth of the transmission and longer the distance, the higher requirements for the cable's resistance to attenuation and interference. If the distance is short, a quality copper HDMI cable can cope with ultra-high speed transmission. HDMI 2.0 data cables from the Cat.2 version can use passive cables up to 15 meters, while HDMI 2.1 high-speed data cables from the Cat.3 version are recommended to add power to drive signal transmission once they exceed 5 meter. Pure copper cables cannot meet the demand after 5 meters, and it is beginning to be recommended to use AOC cable (Active Optical Cable). Due to optical fiber, transmission is almost no loss, no electromagnetic interference, so the last three years of fiber optic HDMI cable supply chain manufacturers are beginning to enter a period of rapid development. HDMI 2.1 cables are now widely used in scenarios requiring the output of HD video display devices and large-scale cabling connections. such as: home theatre systems, remote information distribution systems, broadcast TV control systems, public safety HD surveillance systems, HD video conferencing systems, multimedia systems, large medical imaging systems, industrial automation systems, etc. Optical HDMI 2.1 cables are also recommended if you want to improve the refresh rate and immersion of your games.
Traditional HDMI copper cable is subject to signal attenuation, which makes it difficult to meet the high bandwidth transmission demand of 18Gbps. Advantages of optical fiber HDMI cable are precisely high transmission bandwidth, high communication capacity, strong insulation and anti-electromagnetic interference, allowing you to experience stunning sensations in 3D and 4K games. For game lovers, there is no need to worry about transmission bandwidth at all, they can enjoy multi-layered smooth and brilliant yet colourful gaming graphics.
I. Smaller, lighter and more flexible
Active Optical fiber HDMI cables use an optical fibre core, while ordinary HDMI cables use a copper core. The optical fibre HDMI cable is slimmer and softer, more suitable for large area burial, and has superb resistance to bending and impact, plus the maximum outside diameter of the cable is only 4.8mm, also very suitable for installation and construction in small spaces.
II. Long-distance with lossless transmission
Optical HDMI cable comes with a photoelectric module chip, using optical signal transmission, long-distance signal attenuation can be negligible. Truly achieving a 300-meter long-distance low-loss transmission, and protect the 4K image and high-fidelity audio fidelity, while the traditional HDMI cable is generally not equipped with the chip, signal loss is relatively high.
III. Free from external electromagnetic interference
Traditional HDMI cables, which transmit electrical signals through copper cores, are susceptible to external electromagnetic interference, making the video prone to frame loss and poor audio signal-to-noise ratio. Optical HDMI cables transmit optical signals by optical fibres, which are not subject to external electromagnetic interference and can achieve lossless transmission, making them ideal for gaming gamers and demanding industry professionals.
IV. 18Gbps ultra-high speed bandwidth
Traditional HDMI copper cables are subject to signal attenuation, making it difficult to meet the high bandwidth transmission requirements of 18Gbps. The advantages of the optical HDMI cable are precisely the high transmission bandwidth, large communication capacity, insulation and strong anti-electromagnetic interference performance, allowing you to experience the shocking sensation in 3D and 4K games. For gamers, there is no need to worry about transmission bandwidth at all, and you can enjoy multi-level smooth and brilliant yet colourful gaming graphics to your heart's content!
Current price of fiber optic HDMI cable is expected to continue to rise, compare with copper prices, the traditional price difference advantage is gradually lost. With the development of technology, many domestic manufacturers have begun to invest in the field, coupled with the strong advantages of fiber optic HDMI cable itself, I believe that fiber optic HDMI cable in version 2.1, to replace copper transmission HDMI cable is just around the corner.
With the development of 5G technology, which uses the next generation of cellular technology, using microwave transmission, fast speed and large coverage, 5G download speed up to 10Gbps. The future application is to use light technology for the mainstream, optical transmission technology to bring the best experience to electronic consumers. With the step of fiber repalce copper is becoming faster and more intensive, fiber optic connection cable will be popular in two to three years. Most important component of the AOC HDMI is the chip module, which is mainly composed of the main chip + laser, part of the chip module consists of the main chip + laser + communication protocol chip. Most used on the market is the German main chip (Silicom line) plus the Phillips matrix laser, some modules also add Texas Instruments (TI) communication protocol chip. （Silicom's main chip is characterised by its stable performance and low power consumption, with TX power consumption generally around 200mW and RX power consumption only around 160mW, so that almost all playback and display devices can be supported by their rated voltage and current. Cable manufacturers are mixed, most of the long-distance fiber optic HDMI application scenarios are pre-buried decoration, if the process is not protected, there is the occurrence of folding and other cases, the subsequent face is to tear down the wall re-wiring. Waste of manpower and material resources is secondary, the important thing is to tear down the wall and smash the wall. Electronic devices have a service life of the problem, especially lasers if long-term use of the state of the case, two years after the loss of high power consumption resulting in unusable, this is the biggest problem affecting the development of AOC HDMI applications, there are some manufacturers to develop and release detachable components, but the market application scenario has not increased, although the HDMI2.1 era so that the fiber HDMI connection cable Although the HDMI 2.1 era has brought optical HDMI cables to the forefront, technical bottlenecks still exist.components, but the market application scenario has not increased, although the HDMI2.1 era so that the fiber HDMI connection cable Although the HDMI 2.1 era has brought optical HDMI cables to the forefront, technical bottlenecks still exist.