Now many businesses use various methods to fool you, and then let us willingly pay. The essence of collecting IQ tax is actually to use sellers to use consumers' information mismatch and special cognitive deficiencies in certain scenarios to cheat.
Some people think that they are more savvy, and they are so stupid, but in fact, there are so many tricks that businesses collect IQ taxes, and you are hit without knowing it.
The same goes for the TV industry. As TV prices get lower and lower, we can buy a large-size TV product for very little money.
But the price is similar, which one should I buy? At this time, the manufacturers began to rack their brains on how to collect your "IQ tax." What "world's first", "industry exclusive", release all kinds of technical terms that you don't understand but seem to be tall to seduce you, feel that not buying = losing money.
Today, I’m going to talk to you about TV purchases, those that seem to be tall but are actually more gimmicky than practical TV technology, see if you have been shot.
MEMC motion compensation
MEMC is praised by many manufacturers as the watershed between high-end and low-end. It is really useful, but it is not as magical as expected.
In fact, MEMC is not a new technology. The Japanese used it more than ten years ago. Simply put, MEMC technology is to improve the smoothness of the picture, the original 30Hz frame rate is processed through the algorithm to reach 60Hz or even 120Hz.
Let the chip predict by itself what the next frame will be after each frame, make a judgment on the motion trajectory of the dynamic picture, generate a new picture frame, and then insert it into the original picture frame. In the elimination of motion jitter, motion trailing has a certain effect.
This technology also has its own shortcomings. MEMC is implemented through a specific frame interpolation algorithm, which itself causes the edges of the moving image to be not clear enough.
When the trajectory of the moving object in the picture cannot be judged, this technology may fail, and it cannot compensate for the image in various scenes. And if the low frequency video is forced to 60Hz, the image quality will not be very good.
Therefore, this function is actually optional when watching TV series and other programs on a daily basis. It only plays a certain role in some high-speed sports such as football matches.
HDR
HDR technology is the hottest display technology in the past two years. Simply put, HDR is a high dynamic image quality range enhancement technology that improves the contrast between the brightest and darkest pictures by adjusting the brightness of the screen to make the picture brighter. The sense of hierarchy is stronger.
Compared with ordinary SDR content, it achieves better color gamut coverage and increased contrast, achieving better light and dark display effects, appropriately reducing the brightness at too low exposure, and increasing the brightness at too dark places.
Careful friends can feel that when everyone hasn't understood what HDR really means, many TV manufacturers have begun to fully distribute their products, and almost overnight TVs in the stores have become HDR TVs.
Although HDR technology is very helpful to the improvement of picture quality, like 4K, HDR format video can be said to be very few, and the only ones are just a few minutes of demo source. And also need a special HDR camera for video shooting.
Although HDR technology has a certain effect on ordinary video sources, the current technology often has some adverse effects on the screen.
Because HDR brings about the improvement of peak brightness and contrast ratio, if some TV manufacturers do not control HDR well, they are not even as good as current SDR TVs. The effect presented can only make the picture quality worse.
Therefore, in a short period of time, HDR video is still far away from us and cannot meet the daily playback requirements.
Ultra thin
Nowadays, TV sets are getting thinner and thinner, and the thinner they feel, the more high-end they are. Various manufacturers are also focusing on the concept of ultra-thin TV. The advantage of ultra-thin TV may be that it looks good.
Compared with the advantages, the disadvantages of ultra-thin TVs are much more obvious.
The first is that the audio performance is affected, because audio needs a certain amount of cabinet space for support, and the audio cabinet space directly affects the sound quality. This is why many LCD TVs are not as good as CRT TVs, and some high-end LCD TVs use a split structure. the reason.
There is also the limitation of the backlight method. The LCD screen backlight method is divided into two types: direct backlight and edge backlight. Due to the blind emphasis on "ultra-thin", many TVs use the edge-lit backlight method that is easier to lighten and thin. The disadvantages of this backlight are also obvious: light leakage cannot be completely avoided, and the screen brightness is uneven.
In addition, most TVs claim only XX mm in thickness, which is the thinnest part of the TV. There must be a big protrusion behind the back panel. Be sure to spot it before buying it and don't be fooled.
