In the household appliances industry, the overall dividends have basically disappeared, but there are also individual emerging categories that still have the opportunity to enjoy a universal bonus cake, such as a screenless TV.
Regarding the non-screen TV, it can be divided into two major factions, one is the projection school and the other is the laser television school. Because all do not need the traditional LCD screen or OLED screen such as a visible screen, all can be classified as non-screen TV category.
Taking a laser television as an example, according to data from Yikang, in the market of more than 80 feet, the proportion of laser television in 2017 has reached over 60%, which has become the mainstream of the large-screen market, and the hot market has triggered Hisense and Changhong. And other traditional TV manufacturers and millet, rice and other Internet brands to enter.
The popularity and expansion of the emerging category market, user education work is very important. However, Nail Technology has noticed that in the process of market promotion, some emerging brands always want to be represented as representatives of this category, appearing in the name of “createrâ€, “universalist†and “subversive†to realize the brand. The placeholder. However, after careful analysis, it is not difficult to find that there are still many pitfalls in the products of these brands.
For example, in 2016, after the launch of H1, T1, and T2 with no new screen TVs, Zamimi directly called LCD TVs. Its founder stated, “Without five years, no screen TV will overturn traditional TV.†Based on time, it will be the latest. By 2021, no screen TV will subvert traditional TV, but is it actually possible?
According to the data provided by Aowei Cloud Network, the total sales volume of the intelligent micro-investment market reached 1.29 million units in 2017, and it is expected to sell 2.32 million units in 2018. By 2019, these two figures are expected to reach 3.66 million units respectively. We must know that the annual sales volume of LCD TVs is close to 50 million units. By 2021, the market volume of smart micro-projection is expected to be about 1/10 of that of LCD TVs. What's more, the use scenarios of smart micro-investors are more in such spaces as bedrooms and dens, and they cannot form alternatives to large-screen TVs in the living room.
Of course, non-screen TVs also include laser televisions. Although laser televisions have great development prospects, the overall market size is still less than that of smart micro-projections. At least until 2021, it is far from tens of millions of LCD TVs per year. Comparison of body mass.
The so-called "subversion of traditional television in five years" is just an attractive gimmick. In fact, the shouting on the slogan is not injurious. The question is, is the product really strong?
Xiao Bian noticed that the two major brands of screenless TVs, Miji and Hisense, respectively released their new products.
Let's take a look at the meter, which is released without screen TV H2, H2 Slim and three new products, the price was 4999 yuan, 3999 yuan and 12999 yuan.
If you look at the price alone, it is still quite competitive. But don’t forget that screenless TVs require curtains. Currently, the price of light curtains on the market is generally around 5,000 yuan. Even if there are four or five thousand screenless TVs, if you add a professional light curtain, the overall price Also around 10,000 yuan, the cost is not low. The 12999 yuan of laser TVs, .LUNE, is also not equipped with a curtain.
Hisense's newly released L5 laser TV not only has a 4K resolution, but also has a maximum brightness of 400 nits (the following will explain the power of this indicator). The price is directly under investigation to 19999 yuan, and it is directly matched with DNP original custom 80.å‹ High-gain anti-light curtain.
Look at the resolution again. The screenless TVs H2 and H2 Slim of the meters have a resolution of 1080P, and the laser television and LULUN technology do not see the rate information. If you refer to the projector's standard, 1080P is still okay, but if you look at the "TV" standard, 1080P has greatly fallen behind. At present, the TV industry is vigorously popularizing 4K in both terminal and content, and even some brands have begun to deploy 8K. 1080P is already outdated for TVs that require higher picture quality.
Finally look at brightness. Interestingly, regardless of the nature of the projection screen or non-screen TV, or laser television, the meter's external indicators of brightness are "". And Hisense laser TVs advertise “Niteâ€. So, what is the difference between these two indicators?
Xiao Bian learned that Nite is the brightness standard for LCD TVs, and ANSI lumens is the standard for projectors. It can be seen that some brands use screen projection standards to make screenless televisions, while others use TV standards to make screenless televisions.
Do not know if you do not compare. Previous ***** made Hisense 4K laser TV L6 evaluation, specifically to convert the lumen and nit. According to the internationally accepted method of estimating nits and lumens, the luminance of 350 nits of Hisense 4K laser TV L6 is converted into lumens. The specific conversion formula is as follows: Luminous flux lm=brightness Nits×area×3.14/gain. The estimation result is as follows: The nominal brightness of Hisense 4K laser TV L6 is 3027.96 lumens.
According to the national standard of LCD TVs, the brightness needs to reach more than 250 nits in order to ensure that the user can obtain true and reliable quality when watching TV. The 4K laser TV L5 released by Hisense this time has achieved brightness.
However, the brightness of the laser TV LUN.LUNE is 2700 ANSI lumens, the brightness of the remaining two screenless TVs is 1350 ANSI lumens and 1100 ANSI lumens, and the gap between Hisense L5 and L6 is obvious.
In summary, it can be seen that under the promotion of many brands, the non-screen laser TV market has maintained its popularity, but from the product point of view, there is still a lot of room for improvement. In short, the television industry needs to move forward and it needs to change. It also needs real disruptors to lead, but it does not need unrealistic slogans and unsound products based on lack of technical capabilities. (Nailing Technology Original, reproduced must indicate the source.)
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RJ45 port editing
1. Origin:
2. The name RJ stands for the registered jack and is the USOC (universal service ordering codes) code of bell system. USOC is a series of registered sockets and their wiring mode, which are developed by bell system to connect the user's equipment to the public network. FCC regulations control the application of this purpose. The FCC (Federal Communications Commission) issued a document on behalf of the U.S. government to specify RJ11.
3. RJ11 is the common name of the connector developed by Western Electric Co. Its shape is defined as a 6-pin connecting device. Originally called wexw, where x means "active", contact or needle. For example, we6w has all six contacts, numbered from 1 to 6. The we4w interface only uses four pins, the outermost two contacts (1 and 6) are not used, and we2w only uses the middle two pins. For RJ11, the information source is contradictory. It can be a 2 or 4-core 6-pin connector. What's more confusing is that RJ11 is not only used to represent the 6-pin connector, it also refers to the 4-pin version.
4. RJ45 and RJ11: different standards, different sizes
5. Due to the different sizes of the two (RJ11 is 4 or 6-pin, RJ45 is an 8-pin connection device), it is obvious that the RJ45 plug cannot be inserted into the RJ11 socket. However, it is physically feasible (RJ11 plug is smaller than RJ45 jack), which makes people think that they should or can work together. It's not. It is strongly recommended not to use RJ11 plug for RJ45 socket.
â’ because RJ11 is not internationally standardized, its size, insertion force, insertion angle, etc. are not in accordance with the international standard connector design requirements, so interoperability cannot be guaranteed. They even cause damage to both. Since the RJ11 plug is smaller than the RJ45 socket, the plastic parts on both sides of the plug will damage the metal pin of the inserted socket.
RJ - 45 port is our most common port, it is our common twisted pair Ethernet port
Because twisted pair is mainly used as transmission medium in Fast Ethernet, RJ-45 port can be divided into 10Base-T network RJ-45 port and 100base TX network RJ-45 port.
Among them, the RJ-45 port of 10Base-T network is usually identified as "eth" in the router, while the RJ-45 port of 100base TX network is usually marked as "10 / 100btx". This is mainly due to the fact that most products of Fast Ethernet router still adopt 10 / 100Mbps bandwidth adaptive.
The left figure shows the RJ-45 port of 10Base-T network, while the right figure shows the RJ-45 port of 10 / 100base-tx network. In fact, the two RJ-45 ports are exactly the same in terms of the port itself, but the corresponding network circuit structure in the ports is different, so they can not be connected casually.
Definition of RJ45 interface pin signal
Ethernet 10 / 100Base-T interface:
1 TX + tranceive data +
2 TX - tranceive data -
3 RX + receive data +
4 N / C not connected
5 N / C not connected
6 RX - receive data
7 n / C not connected
8 N / C not connected
Ethernet 100base-t4 interface:
1 TX_ D1 + tranceive data +
2 TX_ D1 - tranceive data
3 RX_ D2 + receive data +
4 BI_ D3 + bi directional data +
5 BI_ D3 bi directional data
6 RX_ D2 - receive data
7 BI_ D4 + bi directional data +
8 BI_ D4 bi directional data
Note: RJ45 interface adopts differential transmission mode, TX + and TX - are a pair of twisted pair, which can reduce interference when twisted together.
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