Interpretation · What does 4k TV mean
Most people buy TV, first see the picture quality is not clear, and the visual enjoyment is satisfied before they pay for it and move it home, it seems that they don’t care how many K, until The market bombing of the “4K TV” slogan of TV merchants made us remember 4K TV.
4K TV means
4K TV refers to a TV with a resolution of 3840 × 2160 pixels and an aspect ratio of 16:9. Under the standard 4K resolution, the total number of pixels can reach 4 times that of the high-definition resolution 1920*1080. At this resolution, the audience will be able to see every detail and close-up in the picture, and get an immersive viewing experience.
The difference between 4K and UHD
UHD is short for “UltraHigh Definition”, which means “Ultra High Definition TV”. Back in 2012, the International Telecommunication Union confirmed that both 4K (with a resolution of 3840×2160) and 8K (with a resolution of 7680×4320) are UHD. That is, 4K is one of the categories of UHD.
4K TV function
Watch TV series through 4K TV, the movie picture is clearer and more vivid, and it has the function of smart TV. In addition, the family cloud function can realize fast sharing between TV and mobile phone, PAD and computer; channel Free appointment and customization; gesture recognition, voice recognition; cloud appreciation K songs can be freely sung at home.
Considering · Is it necessary to buy a 4K TV?
The 4K TV that came out on the wings of technology, the controversy has never stopped. Some people say that its price is too high, the film source is too small, and it is divorced from the actual public demand; some people prefer it The real enjoyment of the high-quality picture quality brought by each person expresses their own opinions. Will you buy a 4K TV?
Advantages of 4K TV:
1. High screen resolution. The playback picture can be clear and natural;
2. Quick response. The computing power is very strong, and it can respond to the user’s operation behavior more quickly.
3. Wide color gamut. The wide color gamut can easily express the color quality that various 1080P TVs cannot show.
4. 4K area. Most 4K TVs have a 4K section, so don’t worry about no 4K sources to watch.
Disadvantages of 4K TVs:
1. Film sources are in short supply. The update speed of the 4K area is slow, which is far behind the demand of users.
2. Real 4K video playback cannot be achieved. 4K TVs have 2K to 4K technology, but can’t really reach 4K resolution.
3. The power consumption is high and the network dependence is high. Without more than 10M optical fiber, you can’t watch 4K videos at all.
4. When playing 1080P video, the picture quality of 4K TV is similar to that of 1080P TV.
Suggestion: If you are a trend-setter who pursues the ultimate picture quality, a 4K TV is necessary. If the TV picture requirements are not high, then the ordinary 2K TV is enough to meet the needs. In addition, 4K TV mainly solves the problem of obvious image particles on large screens above 39 inches, so if the screen is below 36 inches, it is not necessary to buy 4K. It is recommended to consider 50 inches or more, or 60 inches or more. any meaning.
Distinguish the difference between real and fake 4K TVs
There are always a bunch of fake products behind the novel and hot real products. TVs are long-term consumables. In the high-consumption TV market, it is particularly important to buy a real 4K TV. At this time, grasping the difference between real and fake 4K is something that has to be done.
Q: Kitchen storage and kitchen storage
Format difference
H.265 is an encoding format designed for 4K, if the 4K TV does not support playing 4K video in H.265 format , which can basically be characterized as “fake 4K”.
Identification method: Download the 4K short video in H.265 format online, install it with a U disk, and take it to the shopping mall for on-site testing.
Pixel difference
The fake 4K screen uses adjacent pixels to share sub-pixels to reduce costs, only more than 6 million pixels, while the real 4K screen should have more than 8.2 million pixels.
Identification method: see if there is “RGBW” in its promotional materials or screen specifications. The normal 4K TV pixel arrangement is the RGB method, and the pixel arrangement of this screen is a unique RGBW method.
Differences in film sources
A truly “expected” 4K TV brand, not only does the TV product itself do well, but also keeps up with the content service. Therefore, whether the film source area for watching TV is opened or not, the content volume can be distinguished.
Discrimination method: If the manufacturer can provide the film source for free, it can attract more consumers to buy it, and it is also a convincing proof of the quality of its own products.
Difference in picture quality
Because of the high resolution of real 4K TVs, the display effect of picture quality is very clear and realistic. On the contrary, the level of fake 4K TVs is limited, and the picture effect is certain not ideal.
Identification method: Bring a 4K movie for the store to play, and several TVs will be better than others. The edge details are very clear and there is no dotted line. It is true 4K, and the edge is blurred. It is fake.
Comparison · 4K TV PS 8K TV
In the world of people who have nothing to do with TV production and sales, I am afraid they just know the information of 4K, 8K TV has swept the major supermarkets, 8K is inevitable from the name More advanced, but what exactly is the difference between 4K and 8K?
Visual effects
The 4K picture is clear, the small parts of the characters’ expressions can be seen clearly, and the pictures with color-transparent effects such as smoke and dust are also very realistic;
8K TV makes you feel Immersive, as if everything is standing in front of you, even if you walk very close, you still can’t see any pixels on the panel.
Resolution
4K: 3840 horizontal resolution, 2160 vertical resolution, 16:9 aspect ratio, total about 8.3 million pixels.
8K: Horizontal resolution 7680, vertical resolution 4320, aspect ratio 16:9, total about 33.2 million pixels.
Horizontal viewing angle
The best viewing level for 8K TVs can reach 100°
The best viewing level for 4K TVs is only 55°.
Consumption · 4K TV Buying Guide
When 4K first came out, the price of tens of thousands really discouraged many people who wanted to buy it, but since development, the price is actually more acceptable to the public. This also urges buyers to research some must-have tips for buying 4K.
View more professional data Q: kitchen storage and storage
1. Microscopic camera to observe screen pixel particles: Use microscopic camera to observe screen pixel particles , and make an intuitive comparison with 2K TV. If the pixel particles are densely arranged and evenly distributed, it proves that the product has better resolution and clearer picture quality;
2. Check the “National Radio Broadcast and TV Product Quality Supervision and Inspection Center Evaluation Indicators” authoritative certificate: Whether the 4K image quality, 4K processing and transmission, USB3.0, interface transmission rate, number of HDMI2.0 interfaces, rate, etc. ;
3. View processor informationInformation: Open the product [factory menu], enter [system information] to view [local information], you can know For the hardware information of the machine, check whether the product processor model is quad-core or above; Professional 4K decoding chip logos authorized by authoritative chip manufacturers, such as “MSTAR 901K”, “4K Xunrui Image Processing Engine PRO”, etc.
5. Split screen comparison “2K to 4K technology” effect: Turn on the product “2K to 4K technology”, observe the screen image and the full HD TV screen Contrast, the color is more natural, the image is fuller, and the effect is more realistic.
6. Check the USB3.0 blue interface: The industry-universal USB3.0 is the blue interface, and the 4K UHD TV should have one or more blue interfaces.
7. Video hard decoding should be rich: The hard decoding of the TV should support common formats such as RMVB, MP4, MKV, MPG, MOV, etc. It is best to support H.265 decoding.
It is necessary to buy on demand
1. The screen size is adapted to local conditions: in a relatively large living room, the viewing distance is more than three meters, and a TV of 50 inches or even more than 60 inches is selected. If it is in a bedroom or small living room, then a 42-inch or smaller TV is a better choice.
2. Consider purchasing points as needed
Gamers: focus on indicators such as response speed, input delay and dynamic performance; fans watching games: give priority to response speed and dynamic performance and grayscale performance; movie fans: watch a lot of movies, focusing on black level, resolution, color reproduction and sound level.
