Address of SF Distribution Center: Tengfei 12th Road, Shuangliu County, Chengdu, Sichuan Province.
SF Express is an integrated express logistics service provider in China, headquartered in Shenzhen. After years of development, it has initially established the ability to provide customers with integrated logistics solutions, not only providing logistics services at the distribution end, but also extending to the production, supply, sales and distribution links at the front end of the value chain. Starting from the needs of consumers, taking data as the traction, using big data analysis and cloud computing technology to provide customers with a package of solutions such as warehouse management, sales forecast, big data analysis and financial management. [ 1]
SF is also an intelligent logistics operator with the advantage of network scale. After years of dedicated management and forward-looking strategic layout, SF has formed a comprehensive logistics service network of "Skynet Information Network", which can cover domestic and foreign markets. Its direct marketing network is a unique and scarce comprehensive logistics network system with strong network control and high stability among domestic peers.
SF adopts the direct operation mode, and the headquarters implements unified operation management for all branches, thus ensuring the overall operation quality of the network. SF Express is the first express delivery company in A-share to adopt a direct business model. On September 23rd, 2009, 2065438+was identified by the Ministry of Education and other four departments as the first batch of national enterprise practice bases for vocational education teachers. [2]20 19 12, and SF is preferably the brand of China Brand Power Festival 20 19. [3] 20191218, People's Daily China Brand Development Index 100 list ranked 6 1. 20201October 4th, 65438, won the evergreen award of Caijing 2020 "Sustainable Development and Innovation Award".
2. What does it mean that the video conference is in dual-stream mode?
Double streaming in video refers to double video streaming technology.
Double streaming actually refers to the dual video streaming technology. The name originally comes from PeopleContent function and DuoVideo technology of Tandberg, Norway, which can send video and content, PowerPoint, browser screen content and so on at the same time.
At first, people realized the transmission of these information through T. 120 data conference. T. 120 series protocol is a set of universal application protocols for multipoint data conference formulated by ITU-T. ..
The real transmission of T. 120 is very slow when transmitting high-resolution pictures and texts. Sometimes, it is easy to cause the paralysis of the video conference system. In order to find a simpler and more effective video and dual-stream technology.
Extended data:
one
Dual-stream video conference has become a basic application program with dual-stream directly built in and VGA input/output function as the basic requirement. However, at present, multi-vendors of dual-stream video need additional dual-stream modules or other external devices to convert computer VGA.
This method not only increases the investment cost of users, but also increases the complexity and hidden dangers of the system. Matching VGA output interface has become the general trend.
Second, Shuangliu 264
At present, another far-reaching new technology in the video field is h.264 IUT-T and ISO jointly launched the latest video coding standard. The compression ratio, image clarity, fault tolerance and network adaptability of H.264 will eventually replace the current h.26 1 year and h.263, such as MPEG-2 and MPEG-4 coding protocols.
Because of the complexity of H.264 algorithm, the support for H.239 and H.264 should be challenged at the same time. At present, only a few manufacturers in the industry can implement H.239 according to H.264 coding. This has also caused some obstacles to the actual deployment of H.239