Multi-angle secret: this year suddenly burst of red laser television

[PConline Information]

In January 2013 at the Consumer Electronics Show (CES) in the United States, "Hyun Screen" laser television won the "Future Product Award."

On September 10, 2014, Hisense Electric launched 100-inch laser theater products with independent intellectual property rights.

On November 18, 2014, Sistar officially announced its laser TV optical engine in Shenzhen.

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In the past two years, in the television industry, in addition to the existing LCD TVs and OLED TVs of the next era, there is also a kind of “TV” that is slowly re-entering the market. This is a display device that uses laser as a light source. : "Laser TV."

At the beginning of the article, several fairly representative news about laser television were selected. In addition to these manufacturers and other manufacturers or independent research and development or cooperative development, they all entered the market of laser television. Well, Now the question has come: Why does laser television suddenly burst into flames, causing major manufacturers to all go in this direction?

First: Policy reasons

In early September 2012, the Ministry of Science and Technology prepared and issued the “12th Five-Year Special Plan for the Development of New Display Technology”, which will upgrade the laser display to a strategic position. It is proposed that the laser display technology will be vigorously developed during the 12th Five-Year Plan Period. This is the basis of the Ministry of Industry and Information Technology. The "development of laser display features display technology" included in the "12th Five-Year" development plan of the electronic information manufacturing industry is another important guidance document to encourage the development of emerging industries. The introduction of a series of national guidelines and policies has undoubtedly created favorable conditions for the development of laser display technology.

"New Type of Display Technology Development "Twelfth Five-Year" Special Plan" about the laser display part of the screenshot

For the research and development of these major technologies, if it is simply a company to do it, it will inevitably consume a lot of manpower and material resources and it will be difficult to produce results in a short period of time. Now it is led by the relevant national departments, and it is specifically established, with policies, funds, etc. The support of the parties will inevitably be more effective. Therefore, major manufacturers have all started their own research and development plans for laser display technology.

Summary: Because China's display technology in the research and development lag, leading to China's TV manufacturers have missed the "from the CRT era to the era of tablet", although after a period of chase, domestic TV manufacturers accounted for the bulk of sales, but Most of the cost of the LCD panel in the entire LCD TV is still earned by foreign LCD panel makers. Therefore, in this post-plate era, the country adopted the opportunity of the “Twelfth Five-Year Plan” to use display technology as a national major scientific research plan and vigorously support it. It is to change the situation that “technology is lagging behind and suffers from big losses.” Laser display technology has The current blowout development.

Second: the role of benefits

From the TV industry in 2009 to the era of flat-screen TVs from the CRT era, from the beginning of the plasma, LCD two hegemony, and later the LCD dominate; from 720p to 1080p, and now to 4K Ultra HD, in this five During the year, there have been several technological updates in the television industry. Each time, it has driven a wave of large-scale sales, and has become an important booster for major companies' profits.

In the past year or two, we can see that after several major changes, the development of LCD TVs has reached a bottleneck. Both in technology and in the market, the development speed is not as good as before. Manufacturers' sales growth curve can be seen. According to a quarterly report on DisplaySearch LCD TV LCD TV value chain & analysis quarterly reports and large-size TFT (Thin Film Transistor) panel shipments, TV panel makers shipped 257 million units in 2015, only 2% more than in 2014. Billion 49 million increased by 3%.

2013-2015 LCD TV Panel Shipment Plan (Unit: 1 Million) (Source: DisplaySearch)

The decrease in upstream shipments indicates that the planned production of TV makers in the downstream has decreased. The reason for the reduction in production is a large part of the reason for the decrease in sales volume, which is similar to the “domino effect,” which ultimately results in It is the profitability of the entire industry that will decrease upstream and downstream. At that time, what do the vendors generally do? Intensify promotion efforts, exchange prices for sales, develop other profit growth points... and new technologies and new products are definitely a magic weapon that stimulates sales, so laser display technology as a new technology will become ineffective. The temporary "helpful grass" of the lesser manufacturers.

Summary: With the support of new technologies, the pressure on manufacturers in marketing will be reduced accordingly. The market strategy can be changed from man-made manufacturing topics and manufacturing of gimmicks to the popularization of new technologies. Therefore, laser display technology is selected for research and development. To a certain extent, it is also the market's drive to manufacturers.

Finally: The Impact of the Market

Although there are two major functions in front of them, the ultimate goal of R&D and production is to sell them. There are no consumers and no audience. Everything is useless. This aspect will start with the advantages of laser display technology. Because of the suspension of production of plasma panels, people have left projection and LCD TVs for the selection of large-screen display devices in the market. For projectors, there are always shortcomings such as short lamp life, insufficient brightness, and LCD TVs. One of the solutions, but its high price is not affordable for most people.

The price of the large-screen LCD TV

Everyone can learn from major merchants that the larger the size of LCD TVs, the more expensive the price will be. Consumers will have to deal with their high prices in addition to the high prices, but also have to bear the burden of special customization. Time costs. In this regard, the advantages of laser television are obvious. Take the example of the 100-inch laser theater of the listed Hisense Group, the price of which is 69999 yuan is only about half that of LCD TVs of the same size, and there is no need to use custom production methods. Want to buy buy.

Probably schematic diagram of laser imaging

In addition, friends who can display devices in such a large place are generally quite demanding in terms of picture quality. LASER TV is a semiconductor-pumped solid-state laser working substance that generates continuous laser light of three wavelengths of red, green, and blue as the light source of the color laser television. The three-primary laser scanning image is controlled by the television signal. The color gamut coverage can theoretically reach more than 90% of the human gamut. Moreover, because there are already many manufacturers of laser display technology has its own intellectual property rights, so the advantages of the adjustment in the parameters, the laser TV module provider billion Star even put forward in the conference quality "on-demand" One concept, which is quite attractive to movie lovers.

Summary: Although the current industry development situation, laser television technology to become a true market there are still many ways to go, but because of the support of the country, the interests of the drive and consumer demand, manufacturers This technology is very important. This is the real reason why laser television has suddenly become so popular that it has become obscure. We hope this time, "China created" will not disappoint us again.

Industrial Managed Switch

Industrial Ethernet Switches are specifically designed to meet the needs of flexible industrial applications and provide a cost-effective industrial Ethernet communication solution. And its networking mode is more focused on loop design. The ring has the difference between single ring and multiple ring. At the same time, there are private ring protocols designed by various manufacturers based on STP and RSTP, such as RingOn, RingOpen open loop, FRP ring, turbo ring, etc.
The network management switch can be managed through the following ways: management through RS-232 serial port (or parallel port), management through web browser and management through network management software.
1. Management via serial port
The network management switch comes with a serial cable for switch management. First plug one end of the serial cable into the serial port on the back of the switch, and plug the other end into the serial port of an ordinary computer. Then power on the switch and the computer. The "Hyper Terminal" program is provided in both Windows 98 and Windows 2000. Open the "Hyper Terminal", after setting the connection parameters, you can interact with the switch through the serial cable. This method does not occupy the bandwidth of the switch, so it is called "Out of band" (Out of band).
In this management mode, the switch provides a menu-driven console interface or command line interface. You can use the "Tab" key or arrow keys to move through the menus and submenus, press the Enter key to execute the corresponding commands, or use the dedicated switch management command set to manage the switch. Switches of different brands have different command sets, and even switches of the same brand have different commands. It is more convenient to use menu commands.
2. Manage via web
The managed switch can be managed via Web (web browser), but an IP address must be assigned to the switch. This IP address has no other purpose except for the management switch. In the default state, the switch does not have an IP address. You must specify an IP address through the serial port or other methods to enable this management method.
When using a web browser to manage the switch, the switch is equivalent to a Web server, but the web page is not stored in the hard disk, but in the NVRAM of the switch. The Web program in the NVRAM can be upgraded through the program. When the administrator enters the IP address of the switch in the browser, the switch will transfer the web page to the computer like a server, and it will feel like you are visiting a website. This method occupies the bandwidth of the switch, so it is called "in band management" (In band).
If you want to manage the switch, just click the corresponding function item on the webpage and change the switch parameters in the text box or drop-down list. Web management can be carried out on the local area network in this way, so remote management can be realized.
3. Managed by network management software
Network management switches all follow the SNMP protocol (Simple Network Management Protocol), which is a set of network equipment management specifications that comply with international standards. All devices that follow the SNMP protocol can be managed through network management software. You only need to install a set of SNMP network management software on a network management workstation, and you can easily manage the switches, routers, servers, etc. on the network through the LAN.
The management of the network management switch can be managed in the above three ways. Which method is used? When the switch is initially set up, it is often through out-of-band management; after setting the IP address, you can use in-band management. In-band management Because the management data is transmitted through a publicly used LAN, remote management can be achieved, but the security is not strong. Out-of-band management is through serial communication, and data is only transmitted between the switch and the management machine, so the security is very strong; however, due to the limitation of the length of the serial cable, remote management cannot be realized. So which method you use depends on your requirements for security and manageability.

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