How to buy smart TV? What are the parameters of the business?

Smart TV is a fully open platform equipped with an operating system, allowing users to install and uninstall various types of application software while enjoying normal TV content, and continues to expand and upgrade the functionality of new TV products. Smart TVs can continue to provide users with a rich and personalized experience that uses cable digital TV receivers (set-top boxes).

Let's take a look at the parameters that we need to know when purchasing a smart TV.

First, the screen

As a smart TV, the main thing is the screen. A 50% to 70% of the cost of a smart TV is on the screen, so the first thing to consider when purchasing a smart TV is the screen.

Smart TV screens can be categorized into two types. One is a hard screen, and the other is a soft screen.

Hard screen, also known as IPS (In-PlaneSwitching, plane conversion), is the LCD technology of Hitachi in 2001, commonly known as "SuperTFT". In plain language, a layer of transparent resin material with high hardness is added to the LCD panel to protect the outer film.

A soft screen is a “rappling” that occurs when you swipe your finger across the LCD panel. In plain words, there is no liquid crystal panel that uses an outer protective film.

Hard screen advantages:

High viewing angle, fast response, accurate color reproduction. Compared with other types of screens, the screen of IPS screens is relatively "hard." It is not easy for water-pattern distortion to appear when you use your hand to scratch it, so it is also called a hard screen.

Soft screen advantages:

The color performance is good, the sense of hierarchy is strong, and the heat dissipation is in place.

Hard screen disadvantages:

Poor cooling effect, easy reflection, color depth of field performance is not in place.

Disadvantages of soft screen:

The touch will be distorted and the high-speed motion picture will be unsatisfactory.

How to distinguish between hard screen and soft screen?

Pressing the screen a little harder will produce ripples as a soft screen. Conversely, if there is no visible ripple, it will be a hard screen.

Second, the resolution

The resolution is the precision of the screen image and refers to how many pixels the display can display. Since the dots, lines and areas on the screen are all composed of pixels, the more pixels the display can display, the finer the picture, and the more information that can be displayed in the same screen area, the better the picture quality. Thanks to the development of the past few years, 4K ultra-high-definition technology has become more mature, with a resolution of 3840x2160, which is four times that of 1080P. The current price of 4K TVs has fallen a lot compared with earlier years, and it has reached the range that the average consumer can have.

Generally, a smart TV needs a resolution of 1080P below 50 inches, and a resolution of 4K above 50 inches.

However, if you want to see 4K sources, you have to mention the speed. If you don't have a compressed 4K source for smooth viewing, broadband should be at least 50M.

Third, hardware performance

While improving the picture quality, the hardware performance must keep up. Smart TVs, like smart phones, can even be viewed as a magnified smartphone. The hardware performance of smart TVs is mainly determined by the processor, storage, and storage. Most of the smart TVs in 2017 have 2~3GB of storage, and 4GB of large storage, but usually 2 or 3GB is enough. After all, TV is not a mobile phone and will not open so many background programs. Most of the storage capacity of smart TVs is 8GB and 16GB. Of course, there are also 32GB of large storage that can be used to download some large games.

Let's focus on the TV's processor.

Earlier we introduced the composition of the processor of the mobile phone, one of which is the core number. Many businesses use the number of cores to flicker their smart TV performance. Even some businesses flick their own smart TVs to thirty cores. It is necessary to know that the current number of smart phones has only ten cores.

Smart TV processors and mobile phones are all ARM-based chips. The smart TV's processor is mainly composed of CPU, GPU and VPU.

The CPU, the central processor, is mainly used to process data and determine the operating speed of the television.

GPU, image processor, is mainly used to enhance the screen rendering effect and enhance the real-time display effect of the screen.

VPN, video processor. With powerful video processing capabilities, the dynamic picture is extremely smooth, resulting in a non-ordinary visual experience at the same resolution.

Smart TV processors also have many co-processors, such as APUs (Audio Processors), Neon (Multimedia Co-Processors), FPUs (Floating Point Processors), and so on. Many businesses calculate the number of coprocessor cores as the number of CPU cores, and there are thirty-core processors mentioned above.

So don't be fooled by the parameters of the business.

Fourth, the screen size

The size of the mainstream in the smart TV market is between 42-55 inches. The size of the TV that the user chooses should be determined based on the size of the living room. That is, the actual distance of the TV from the viewer, if the distance is too far or too close, it will have a bad influence. For example, if you look at the distance too close, it can easily cause the user's visual fatigue, and the screen will produce a slight graininess. If you look at the distance too far, the details in the picture will be lost, and some smaller fonts will appear unclear and affect the user's viewing.

So how do you choose the best size for your TV?

According to experts, the best viewing distance of flat-panel LCD TVs is relatively shorter than that of CRT televisions in the past; according to a comparative scientific method, the reasonable viewing distance of LCD TVs is the TV screen pair. About 1.5 to 2 times the size of the corners.

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