Little common sense: What are the important factors affecting TV picture quality?

Television video quality is divided into five parts: sharpness, number of frames, color gamut, grayscale, and brightness dynamic range.

At present, most people should see the development of the definition and color gamut. In fact, the number of frames, the brightness dynamic range, and the gray scale resolution also play a very important role in the video quality.

Resolution:

With the popularity of high-definition video, there are more and more 4K ultra-high-definition video quality programs that can be downloaded over the Internet. For the average consumer, the development speed of the video definition format has also directly affected our ability to capture higher-definition picture quality content through TV products, such as the popularity of TV products from HD to ultra-clear.

Color gamut:

The international standard is a wide color gamut with color coverage reaching NTSC92%. A typical TV uses a white LED, ie, a 2-color hybrid LED. The color coverage is about NTSC 72%. The backlight of the wide color gamut TV uses a red/green/blue hybrid LED. The color is extremely bright, and the coverage rate is about 92% to -110%.

The importance of the BT.2020 standard is beyond doubt. Just as BT.709 played a guiding role in the production of high-definition video transmission and high-definition display devices, the BT.2020 standard also has a profound impact on the design of ultra-high-definition display devices in the consumer sector. And manufacturing, especially in the 4K flat-panel TV is more prominent.

Brightness dynamic range:

Brightness dynamic range - The integration of HDR technology is not just for the television to increase the brightness range, but also has some significant changes in the color change. The BT.2020 color space has been defined by the ITU International Telecommunication Union as an image signal color gamut standard in the 4K/8K era. The vertical axis of the display (right image) is a luminance range display on the color gamut. We have obtained geometrical, three-dimensional color growth.

Time resolution (frames):

The number of frames is the amount of pictures transmitted in one second. It can also be understood that the graphics processor can refresh several times per second, usually expressed in frames per second (fps). Each frame is a still image. Displaying frames in rapid succession creates an illusion of motion. A high frame rate gives smoother, more realistic animations. The higher the number of frames (fps), the smoother the displayed action will be. However, the file size will become larger.

Grayscale resolution:

Grayscale resolution shows the ability of the display to distinguish grayscales. The greater the grayscale resolution, the more grayscale that can be displayed on the screen. The early monitors were designed in 16 colors and had very low grayscale resolution. Later, they were upgraded to 256 colors. Later they were upgraded to 8-bit, 16-bit, and 32-bit, and the grayscale resolution of the display was also higher. Since each color of the display is represented by the grayscale mixture of red, green, and blue channels, the capability of the display to distinguish the grayscale basically determines the ability of the display to restore true colors.