Now many businesses use various methods to deceive you, and then let us willingly pay. The essence of collecting IQ tax is actually to use sellers to cheat by taking advantage of consumers’ unequal information and special cognitive defects in some scenarios.
Some people think that they are more smart, how can they make such a fool, but in fact, businesses collect intelligence tax in a variety of ways, and unconsciously you are hit.
The same is true in the TV industry. With the price of TV becoming lower and lower, we can buy a large-size TV with very little money.
But the prices are almost the same. Which one should I buy? At this time, manufacturers begin to rack their brains to collect your “IQ tax”. What kind of “Global Initiative” or “exclusive in the industry” tempts you by releasing all kinds of technical terms that you don’t understand but seem to be tall and tall. You feel that if you don’t buy it, you will lose money.
Today, I would like to talk with you about the TV technology that seems to be tall but in fact is more than practical in the process of purchase. Let’s see if you are shot.
MEMC motion compensation
MEMC is regarded as the watershed between high-end and low-end by many manufacturers. 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. In short, MEMC technology is to improve the picture fluency, the original 30Hz frame rate through algorithm processing to 60Hz or even 120Hz.
Let the chip predict what the next frame will be, judge the motion trajectory of the dynamic picture, generate a new picture frame, and then insert it into the original picture frame. In eliminating motion jitter, motion tailing has a certain effect.
This technology also has its own shortcomings. MEMC is implemented by a specific frame insertion algorithm, which will cause the edge of the moving image is not clear enough.
When the track of the moving object in the picture can not be judged, this technique may be invalid, and can not compensate the images in various scenes. And the low-frequency video forced into 60Hz, the image quality will not be very good.
So in daily watching TV series and other programs, this function is dispensable, only in football matches and other high-speed sports picture will play a certain role.
HDR technology is the most popular display technology in the past two years. In short, HDR is a high dynamic image quality range enhancement technology. By adjusting the brightness of the screen, it can improve the contrast between the brightest and darkest pictures, making the picture brighter and more hierarchical.
Compared with ordinary SDR content, it can achieve better gamut coverage and contrast increase, achieve better light and dark display effect, appropriately reduce the brightness in the low exposure area, and improve the brightness in the dark area.
Careful friends can feel that before we understand what HDR really means, many TV manufacturers have begun to sell their products in an all-round way. Almost overnight, all the TVs in the stores have become HDR TVs.
Although HDR technology is of great help to the improvement of image quality, like 4K, there are few HDR videos, and the only ones are just a few minutes of demo source. In addition, a special HDR camera is needed for video capture.
Although HDR technology has a certain effect on ordinary video source, the current technology often has some reaction on the screen.
Because HDR brings about the improvement of brightness peak and contrast, if some TV manufacturers can’t control HDR well, it’s not even as good as SDR TV now, and the effect can only make the picture quality worse.
So in a short period of time, HDR video is still far away from us, which can not meet the requirements of daily play.
Nowadays, TV sets are getting thinner and thinner, and the thinner they feel, the more high-end they are. Manufacturers are also focusing on the concept of ultra-thin TV sets. The advantage of ultra-thin TV sets may be that they are good-looking.
Compared with the advantages, the disadvantages of ultra-thin TV are more obvious.
First of all, the sound performance is affected, because the sound needs a certain box space for support, and the sound box space directly affects the sound quality. This is also why many LCD TVs are not as good as CRT TVs in sound quality, and some high-end LCD TVs use split structure.
There is also the limitation of backlight mode. The backlight mode of LCD screen is divided into two types: straight down backlight and side in backlight. Due to the emphasis on “ultra thin”, many TVs use the side in backlight mode which is easier to lighten, but the disadvantages of this kind of backlight are also obvious: light leakage cannot be completely avoided, and the brightness of the screen is uneven.
In addition, the vast majority of TVs claim that they are only XX mm thick, which is the thinnest part of the TV. There must be a big piece protruding from the back of the back panel. Before you buy it, you must be sure not to be fooled.
Editor in charge ajx