USB4 specifies tunneling of:
40 Gbps Maximum Speed: By using two-lane cables, devices are able to operate at up to 40 Gbps, the same speed as Thunderbolt 3. The data is transmitted in two sets of four bidirectional lanes.
DisplayPort Alt Mode 2.0: USB 4 supports DisplayPort 2.0 over its alternative mode. DisplayPort 2.0 can support 8K resolution at 60 Hz with HDR10 color. DisplayPort 2.0 can use up to 80 Gbps, which is double the amount available to USB data, because it sends all the data in one direction (to the monitor) and can thus use all eight data lanes at once.
Better Resource Allocation for Video, PCIe: In lieu of alternative mode where the other interface takes over the connection, USB 4 devices can use a process called "protocol tunneling" that sends DisplayPort, PCIe and USB packets at the same time while allocating bandwidth accordingly.
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The LED national standard opinion draft was basically completed, and dozens of companies participated in the formulation of 15 items. With the improvement of the national standard, the LED industry not only has seven bases in hardware, but also is enriched in software such as technical standards.
The LED industry is still in a chaotic situation. There is no standard implementation, some companies are driven by the interests, and the quality of the products produced is inferior. Manager Liu of Zhongshan Shanmu Display Technology Co., Ltd. said in an interview that some enterprises will find some low-end materials for production when they receive orders, and they will receive money when they sell and ship.
However, this situation is expected to be resolved within the year. It is understood that the development of LED national standards is being carried out in an orderly manner. At present, this standard opinion draft has been basically completed.
There is no market standard
Chen Jiansheng, general manager of the LED business unit of Huayi Lighting Group, believes that the lack of standards poses problems for the production of enterprises. Even in the 3C certification, the certification body can do nothing. Chen Jiansheng revealed that although Huayi's LED business unit has a research and development team of sixty or seventy people, but for the new LED standard, it is also in the stage of exploration. Many LED products can only refer to the standards of some traditional lamps, resulting in more investment and efficiency. less.
Although as an emerging lighting industry, LED has the advantages of energy saving, longevity and high efficiency, but after all, it belongs to the newborn in the lighting industry, and its problems are increasingly prominent. According to the relevant person in charge of the National Lighting Appliance Standardization Technical Committee, the quality of LED products is the biggest bottleneck restricting the development of the industry. In addition, the lack of corporate service awareness and the lack of uniform product quality standards, some manufacturers have low-priced dumping, leading to the development of the LED industry. Failure to speed up in time. In addition, the high price has become the biggest stumbling block for the development of LED speed and even popular use.
Whether it is the government or the enterprise, everyone is optimistic about the future of the LED industry. In today's building of a conservation and environmentally friendly society, LED has become the new favorite of the lighting industry. According to relevant sources, at the LED International Exhibition held in Shenzhen last month, new LED products emerged in an endless stream. The scope of application was gradually infiltrated into the field of furniture lighting from the fields of landscape lighting and decorative lighting. LED lighting and LED suction appeared on the exhibition. Ceiling lights, LED fluorescent lights, etc. In fact, LED lighting will gradually move from outdoor lighting to indoor lighting, which is a revolutionary significance for the comprehensive use of LED products.
The use of LEDs can be broadened, and finally realize the dream of entering the people's home, which will provide a broader world for the development of the LED industry. As the cost decreases, LEDs can certainly be realized in the field of general lighting. Experts from the National Lighting Appliance Standardization Technical Committee said that after the introduction of the national standard, the company has rules to follow, will mass production, product prices will be reduced, it will truly occupy the market
The timing for standard development of mature LED standards is ripe. Chen Jiansheng bluntly said that the healthy development of an industry requires a rule constraint. It is of epoch-making significance for the relevant national departments to officially launch the development of LED standards. It is reported that there are dozens of companies participating in the development of LED national standards, a total of 15 items.
The reporter learned that the Huayi Lighting Group, which was drafted in five national standards, such as "Safety Requirements for LED Modules for General Lighting", "LED Lights for Road Lighting" and "LED Lights for Decorative Lighting", has already done the relevant standards. Prepare work and form preliminary drafts. These drafts will become the national standard after discussion and revision by the authoritative department and leading enterprises.
A mature industry chain must have standardized standards. Before the enterprise walks in the national standard, the development space acquired must be greater than others. LED currently has seven industrial bases in Shenzhen, Shanghai, Xiamen, Nanchang and Dalian. Various bases have also planned the goals and measures for future development. Among them, the future development goal of Shanghai Base is to establish and improve LED independent intellectual property rights system; work hard to strengthen regional cooperation, improve industrial innovation, and promote scientific and technological research and platform construction.
At present, the Shenzhen base has become the largest and most concentrated area of ​​the domestic semiconductor lighting industry in the industry. It has strong industrial expansion. Based on scientific research conditions, it has completed a number of optoelectronic scientific research achievements based on the Institute of Optoelectronics of Shenzhen University.
Dalian Base continued to increase investment promotion efforts, strengthen industry leadership, strengthen intellectual property protection and management, and formulate intellectual property strategy for Dalian semiconductor lighting industry.
The Nanchang base continued to optimize the environment, do a good job in industrialization, exert the agglomeration effect of the base, and do a good job in attracting investment from countries and regions such as Germany, the United States, Japan, and Korea.
Xiamen Base actively promotes the construction of two pioneering areas, and builds Xiamen into a cross-strait semiconductor lighting industry cooperation pilot zone to promote development, integrate resources, form synergy, promote innovation system construction, set up industrial technology research institutes, and promote cross-strait industrial docking and exchanges. Cooperation.
Increasing costs are inevitable
Although the timetable for the introduction of the current LED standard has not yet been determined, it is foreseeable that after the introduction of the national standard, the LED industry will face a huge reshuffle.
The industry believes that if the national standard is officially implemented, about 50% of the enterprises will be eliminated. Some business owners said that after the implementation of the national standard, the cost of each LED lighting product will increase by 810 yuan, and the current LED market is not perfect, and the profit of some products is only 3 yuan, or even insufficient. According to this calculation, half of the companies are facing reshuffle.
The person in charge of the National Lighting Appliance Standardization Technical Committee said that it will take time for the introduction of the national standard, and the company has a buffer time. It is imperative to strengthen the reserve of talent technology and wait until the national standard is implemented.
After the introduction of the LED standard, it will promote the further standardization of the LED industry, and guide the industry to change from disorderly and non-standard state to orderly and standard access to the city.
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USB 3.2 ("Enhanced Superspeed") Tunneling
DisplayPort 1.4a -based Tunneling
PCI Express (PCIe)-based Tunneling
Main Benefits of USB 4
The new USB 4 standard has three main benefits over prior versions of USB.