4K TV has become the hottest product in the consumer electronics market. Nearly every color TV manufacturer has launched a 4K product. Many consumers are not familiar with 4K TV's standards, parameters, and precautions when purchasing them. However, industry insiders are reminded that there are too many 4K TVs on the market. 4K TVs have been subject to true and false 4K discussion. Consumers should pay more attention to the purchase.
First understand what is 4K TV?
4K TV is a TV with 4K resolution. 4K TV is a TV with resolution of 3840 × 2160 pixels. It is 4 times the resolution density of 2K projectors and HDTVs. At this resolution, viewers will be able to See every detail in the picture, each close-up, to get an immersive experience. It belongs to Ultra HD resolution.
But "screen resolution" is actually a vague concept. Traditional 4K panel pixels consist of three colors: R (red), G (green), and B (blue). The 4K name is derived from its lateral resolution of approximately 4000 pixels [1]. According to the standards defined by the International Telecommunications Union (ITU), the 4K panel resolution is 3840×2160. The aspect ratio is 16:9. According to this standard, the progressive scanning line of the display device under this specification can reach 2160, which is what we often say 2160P. With the standard 4K resolution, the pixel density can reach 4 times the HD resolution of 1920*1080.
The WRGB panel is different, there is a W (white) between each two RGB matrix, this white pixel uses the characteristics of the human eye from the left and right pixels "borrowed" to the color, the physical resolution can be achieved 3840×2160, but the effective color resolution is only around 1920×2160, which is the level of 2K TV. In Japan, such a TV cannot be called a 4K TV, because Japan has an effective color resolution of 3840×2160 for the 4K standard. At present, because there is no rigid industry standard in China, the standard of many manufacturers is only a physical resolution of 3840×2160. Although 4K TVs are currently expensive to locate at high prices, with the participation of many domestic TV manufacturers, 4K TVs have entered the lives of ordinary people. It is also accelerating.
There are two major obstacles in the popularization of 4K TV: "The existence of fake 4K"
When 4K TV ushered in a big sale, the industry is now "true and false" 4K. The survey found that the current price of 4K TVs in the market ranged from a few thousand dollars to over ten thousand yuan. The prices of 4K TVs of different brands varied greatly. Sometimes the price of a 4K TV of the same brand also differed by nearly one third. Many people in the industry said that there are too many low-priced 4K TV gimmicks on the market. Consumers should pay more attention when they shop.
When a TV is connected to a 4K signal, consumers can tell whether it is true or not. It is impossible to see the screen alone. Only a TV that can handle 4K signals and plays a 4K source can be said to be a true 4K TV. As the current 4K TV standard has not yet been introduced, the lack of corresponding industry standards in the country, there is still chaos in the market. Fake 4K TV is in the way, hindering the popularization of 4K TV.
The second is "limited source, 4K TV content is short board"
For users, paying a high price to buy 4K TV, the purpose is to enjoy more shocking, more clear viewing effects. However, for manufacturers, 4K TV is more of a breakthrough in finding the bottleneck of technology, and thus finds a selling point that stimulates sales.
Judging from the current stage, China’s 4K television content industry has just started, and the film source has less impact on consumers’ visual experience. Imagine that the 4K TVs that consumers buy at high prices can only watch high-definition movies and TV shows, and the consumer experience is bound to be affected. In addition to enthusiasts seeking ultimate audio and video effects, in the era of Internet TV, it seems that more and more mass consumers are paying more attention to TV content. Due to the limitations of film sources, content has become a major shortcoming restricting the popularity of 4K TV.
At present, not only domestic television stations around the world have officially provided 4K television broadcasting. The 4K TV in the mall can only attract the eye by playing some 4K scenery. It is worth noting that some brands rushed to open an online 4K channel before the TV station and currently provided hundreds of 4K movies and TV series.
What exactly is 4K TV?
The true 4K TV must have the following three points, all of which are indispensable:
(1) The TV screen must be 4K to guarantee the ultra HD resolution of the video playback;
(2) TV should be equipped with HDM2.0 interface to ensure transmission of 4K image quality, download 4K video from the Internet;
(3) 4K TV must have 4K decoder chip.
(4) True 4K must have "face" and "core"
"The definition is not equal to the resolution, really 4K to have both a 4K screen and a 4K core." An appliance salesman told reporters that the 4K TV spread in stores is now so big that apart from the panel gap, the chip also has a great deal of mystery. . Many people only pay attention to the panel resolution, but do not know that some TVs only use a 4K screen at the front end, and the back-end chips and operating engines are still 2K specifications. Although this TV has a 4K resolution, it cannot play 4K. The headache is that this is extremely difficult to find in the mall.
"All the vendors in the store are showing promotional videos that best represent the advantages of their products. It is difficult to find a gap in comparison with the naked eye." These promotional videos do not fully reflect the ability of TV to perform 4K. After such a TV is bought home, it is very prone to tailing, Caton's condition.
This will teach you to identify 4k TV authenticity!
The first move: look at a few colors
In order to reduce the cost, some RGB three colors are weakened. RG or BW can reach 4K resolution, but they cannot be combined together. Although they are four colors, they are not as good as RGB three-color 4K effects. This is a fake product.
As the three colors of RGB are weakened, the color performance of the fake 4K TV, that is, the quality effect will be significantly reduced. The use of inferior products to impersonate 4K TVs. These TVs can only be called 3K TVs at most, but they sell them to unsuspecting consumers at a price slightly lower than the real 4K. They also tell consumers that this price is affordable.
The second measure: the camera of the smart phone shoots the television with the camera of the mobile phone to shoot the television and can see the white pixel mixed in the RGB three colors, especially the low price product, the more white pixels, the RGB that proves to weaken three The greater the color, the higher the likelihood of a fake. Of course, this may require a slightly higher smartphone pixel, more than 13 million. The current mainstream smartphone configuration, you can also use the camera to take a close-up shot of the TV screen, then zoom in on the computer, you can discern the TV at a glance The pixel arrangement structure.
Except that some manufacturers will use advertising panels to indicate the use of panels with white subpixels, a more effective method is to visit the store in person.
The fourth measure: call the parameters to see the configuration open the product "factory menu", enter the "system information" to view the "local information", you can understand the machine hardware information, to see whether the product processor model is quad-core and above configuration; Observe whether the appearance of the product is affixed with the professional 4K decoder chip logo authorized by the authoritative chip manufacturer, such as "MSTAR 901K" and "4K sharp image processing engine PRO".
Method 1: Turn on the TV's System Settings -- System Parameters --- View Parameters. You can see the display information. As shown below:
Method 2: Use the computer's HDMI interface to connect the TV --- Then look for the highest resolution is not the 3840x2160
Method 3: Look at the resolution representation in the product specification parameters. If the merchant's goods are not on the board, of course, you can return it directly.
The fifth measure: to see the interface 4K TV is to be equipped with one or more USB3.0 blue interface and HDMI1.4 interface, the site can be connected to play 4K video through the HDMI1.4 interface, observe whether it can quickly play, not card screen to check The product's 4K video transmission and reading speed (in this remind users to buy 4K TV, you can use a mobile hard disk to copy a 4K source plugged into the 4K TV's USB interface, first to see if it can normally read playback, two It is to see if the transmission is smooth, if there is no abnormality in both items, 4K videos can be watched at will.
Sixth move: Although it is not mandatory to check for certification, at present, the certification specification has basically been recognized by mainstream 4K television manufacturers at home and abroad. On the website of the CESI certification (CESI), the 4K Ultra-High-definition Certification Bulletin will be regularly released to announce the 4K TV manufacturers and specific models that have passed the certification. If you are concerned about which 4K TV, you can go to the site to compare specific models.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
4K TV is a TV with 4K resolution. 4K TV is a TV with resolution of 3840 × 2160 pixels. It is 4 times the resolution density of 2K projectors and HDTVs. At this resolution, viewers will be able to See every detail in the picture, each close-up, to get an immersive experience. It belongs to Ultra HD resolution.
But "screen resolution" is actually a vague concept. Traditional 4K panel pixels consist of three colors: R (red), G (green), and B (blue). The 4K name is derived from its lateral resolution of approximately 4000 pixels [1]. According to the standards defined by the International Telecommunications Union (ITU), the 4K panel resolution is 3840×2160. The aspect ratio is 16:9. According to this standard, the progressive scanning line of the display device under this specification can reach 2160, which is what we often say 2160P. With the standard 4K resolution, the pixel density can reach 4 times the HD resolution of 1920*1080.
When 4K TV ushered in a big sale, the industry is now "true and false" 4K. The survey found that the current price of 4K TVs in the market ranged from a few thousand dollars to over ten thousand yuan. The prices of 4K TVs of different brands varied greatly. Sometimes the price of a 4K TV of the same brand also differed by nearly one third. Many people in the industry said that there are too many low-priced 4K TV gimmicks on the market. Consumers should pay more attention when they shop.
When a TV is connected to a 4K signal, consumers can tell whether it is true or not. It is impossible to see the screen alone. Only a TV that can handle 4K signals and plays a 4K source can be said to be a true 4K TV. As the current 4K TV standard has not yet been introduced, the lack of corresponding industry standards in the country, there is still chaos in the market. Fake 4K TV is in the way, hindering the popularization of 4K TV.
For users, paying a high price to buy 4K TV, the purpose is to enjoy more shocking, more clear viewing effects. However, for manufacturers, 4K TV is more of a breakthrough in finding the bottleneck of technology, and thus finds a selling point that stimulates sales.
At present, not only domestic television stations around the world have officially provided 4K television broadcasting. The 4K TV in the mall can only attract the eye by playing some 4K scenery. It is worth noting that some brands rushed to open an online 4K channel before the TV station and currently provided hundreds of 4K movies and TV series.
The true 4K TV must have the following three points, all of which are indispensable:
(1) The TV screen must be 4K to guarantee the ultra HD resolution of the video playback;
(2) TV should be equipped with HDM2.0 interface to ensure transmission of 4K image quality, download 4K video from the Internet;
(3) 4K TV must have 4K decoder chip.
(4) True 4K must have "face" and "core"
"All the vendors in the store are showing promotional videos that best represent the advantages of their products. It is difficult to find a gap in comparison with the naked eye." These promotional videos do not fully reflect the ability of TV to perform 4K. After such a TV is bought home, it is very prone to tailing, Caton's condition.
The first move: look at a few colors
(FHD, Full HD TV RGB tricolor array)
Traditional 4K TVs are composed of red, green and blue (RGB) pixels. In order to expand the color effect, panel makers have added white (W), and some are true products that consist of 4 colors and complete one pixel. In order to reduce the cost, some RGB three colors are weakened. RG or BW can reach 4K resolution, but they cannot be combined together. Although they are four colors, they are not as good as RGB three-color 4K effects. This is a fake product.
As the three colors of RGB are weakened, the color performance of the fake 4K TV, that is, the quality effect will be significantly reduced. The use of inferior products to impersonate 4K TVs. These TVs can only be called 3K TVs at most, but they sell them to unsuspecting consumers at a price slightly lower than the real 4K. They also tell consumers that this price is affordable.
(UHD/4K, Ultra HD RGB three-color 4x FHD array,)
The authoritative organization Digital Europe (Digital Europe) emphasized that 4K TVs must include full RGB tri-colors, and the resolution is 4 times that of full HD. The second measure: the camera of the smart phone shoots the television with the camera of the mobile phone to shoot the television and can see the white pixel mixed in the RGB three colors, especially the low price product, the more white pixels, the RGB that proves to weaken three The greater the color, the higher the likelihood of a fake. Of course, this may require a slightly higher smartphone pixel, more than 13 million. The current mainstream smartphone configuration, you can also use the camera to take a close-up shot of the TV screen, then zoom in on the computer, you can discern the TV at a glance The pixel arrangement structure.
(Four color fake 4K, single pixel only has 2 RGBW arrays; if it is true 4 color 4K, single pixel must be 4 RGBW arrays, like the RGB true color 4K in the above figure, high cost and high technical requirements)
The third measure: high-magnifying glass look at the screen as far as possible to the store to buy, rather than just buying it online. There are many online disputes using the "false 4K" of WRGB technology. The shrinking version of RGBW 4K TV has weakened the RGB three colors and added a lot of white pixels. It looks very vague. Generally speaking, fake 4K TV's Hair color has a "white" feeling. If conditions allow you to use a magnifying glass directly, you can distinguish it with a high magnification magnifying glass. Under the high magnification magnifying glass, it can be clearly seen that the pixels are arranged in a “red, green, and blue†three-colored orderly arrangement as a “true 4Kâ€, and that a white pixel or a disorderly arrangement of red, green, and blue is seen as a “pseudo 4Kâ€. . At the same time, the "true 4K" pixel distribution is obviously delicate, and the "false 4K" has a white point in the middle and looks rough and messy. Except that some manufacturers will use advertising panels to indicate the use of panels with white subpixels, a more effective method is to visit the store in person.
Method 2: Use the computer's HDMI interface to connect the TV --- Then look for the highest resolution is not the 3840x2160
Method 3: Look at the resolution representation in the product specification parameters. If the merchant's goods are not on the board, of course, you can return it directly.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
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