From the NTSC color gamut, the sRGB color gamut, dynamic, static contrast, as well as intelligent backlight and dynamic response, there is also MEMC compensation technology that has been mentioned for some time. Faced with these professional vocabularies that seem tall, are you confused?
Below we will explain the various professional vocabularies from various aspects of TV display technology in several phases. I hope that everyone can polish their eyes when buying TV and avoid falling into the traps of merchants.
This article will explain the definition, principle, role, advantages and disadvantages and necessity of smart TV MEMC compensation technology.
MEMC, Chinese name is motion compensation technology.
When the amplitude of television playing is relatively large, picture blurring may occur. First, why is there a fuzzy jitter? This matter also starts with ancient film standards. Ancient films were still film years at that time. In order to meet human eye reaction time and shooting costs (at the time the film was very expensive), the display frame rate (films per second) was set at The lowest 24Hz.
But in the TV era, because the TV is self-illuminated and it is a pixel-scanning method, it actually inserts a black screen between the two screens as blanking. We call it the field blanking, but why not? Expand; So when we watch TV in time series, the television display order is: an effective picture → black field → an effective picture → black field, so go.
In such a situation, if it is still displayed with 24 pictures per second, the human eye will see the flicker. For this reason, the television display frequency is set at 50Hz (China TV) or 60Hz (US TV); and the corresponding broadcast television. The program is also set at this frequency. Therefore, for a film shot at 24Hz, it is necessary to display the frame at 50Hz.
Let's look at a few pictures, the trajectory of a football will basically understand;
The actual track of a football
Actual trajectory linear
Shooting image tracks with a 24Hz camera
Cinema Plays a Linear Motion Picture with a 24Hz Frame Rate
Play track on television
The linear trajectory of the trajectory seen on the TV shows from the figure above that the difference between the actual trajectory and the trajectory seen on the final TV is relatively large. It's easier to see how we stack up the two figures.
From the above figure we can see that during the flight of football, we will see the bad phenomenon of shaking, ghosting and blurring.
Second, how to solve fuzzy jitter? The R&D staff working on TV terminals came up with a big move: motion estimation, motion compensation. The so-called motion estimation, motion compensation: through the estimation of the object's movement trajectory, in the interpolation frame to the object to be moved to fill up, rather than a simple two-frame repetition, in this way to smoother and clearer moving image processing Better. The following figure shows the difference between motion compensation and no motion compensation:
Comparison of Motion Compensation From the above figure, we can see whether there is a difference in motion compensation, and there is no motion compensation effect blur, ghosting, jitter. On the contrary, motion compensation is smooth and clear.
The biggest advantage of motion compensation is that it effectively protects people's eye health. According to the survey, when watching TV, if the image is blurred, the human eye will constantly adjust the focus, prone to fatigue, and long-term visual impact. In addition, the motion picture shake will affect the viewing experience, people with sensitive motor nerves will feel uncomfortable, and they will feel dizzy even if they have a long time.
The advantages of MEMC technology:
1. Eliminating motion jitter; 2. Eliminating motion tailing; 3. Diagonal line compensation, re-emphasizing the slash image information, eliminating the stair-like contour; 4. Sharpness enhancement, restoring the original definition of the marginal contour.
Why use such technology? In fact, it is a wooden barrel principle, the hardware performance has reached the ability to decode 60Hz, and the signal frame rate of the transmission technology has also reached 60Hz, except for the content of the 60Hz content of the video content is very few. So even if you use a 60Hz TV, there is no corresponding hardware or the best results. This is just like you used a 4K TV, but there is no 4K source, watching SD video is still a reason. MEMC motion compensation can be said to be just a compromise, but the majority of program sources are shot at 24Hz or 30Hz. This technique has also become an essential tool.
Summary: MEMC motion compensation technology is an important indicator of the quality of television. It has now become almost standard. So this can't be your reason for buying a TV or it's a sign of the flagship high end. For TVs without this technology (the flagship models of some well-known brands are not available), the landlord suggested that friends who have requirements for picture quality should be cautiously purchased.
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, etc. on TV boxes, smart TVs, smart TV software, etc. Answering questions.
Below we will explain the various professional vocabularies from various aspects of TV display technology in several phases. I hope that everyone can polish their eyes when buying TV and avoid falling into the traps of merchants.
This article will explain the definition, principle, role, advantages and disadvantages and necessity of smart TV MEMC compensation technology.
MEMC, Chinese name is motion compensation technology.
When the amplitude of television playing is relatively large, picture blurring may occur. First, why is there a fuzzy jitter? This matter also starts with ancient film standards. Ancient films were still film years at that time. In order to meet human eye reaction time and shooting costs (at the time the film was very expensive), the display frame rate (films per second) was set at The lowest 24Hz.
But in the TV era, because the TV is self-illuminated and it is a pixel-scanning method, it actually inserts a black screen between the two screens as blanking. We call it the field blanking, but why not? Expand; So when we watch TV in time series, the television display order is: an effective picture → black field → an effective picture → black field, so go.
In such a situation, if it is still displayed with 24 pictures per second, the human eye will see the flicker. For this reason, the television display frequency is set at 50Hz (China TV) or 60Hz (US TV); and the corresponding broadcast television. The program is also set at this frequency. Therefore, for a film shot at 24Hz, it is necessary to display the frame at 50Hz.
Let's look at a few pictures, the trajectory of a football will basically understand;
The actual track of a football
Actual trajectory linear
Shooting image tracks with a 24Hz camera
Cinema Plays a Linear Motion Picture with a 24Hz Frame Rate
Play track on television
The linear trajectory of the trajectory seen on the TV shows from the figure above that the difference between the actual trajectory and the trajectory seen on the final TV is relatively large. It's easier to see how we stack up the two figures.
From the above figure we can see that during the flight of football, we will see the bad phenomenon of shaking, ghosting and blurring.
Second, how to solve fuzzy jitter? The R&D staff working on TV terminals came up with a big move: motion estimation, motion compensation. The so-called motion estimation, motion compensation: through the estimation of the object's movement trajectory, in the interpolation frame to the object to be moved to fill up, rather than a simple two-frame repetition, in this way to smoother and clearer moving image processing Better. The following figure shows the difference between motion compensation and no motion compensation:
Comparison of Motion Compensation From the above figure, we can see whether there is a difference in motion compensation, and there is no motion compensation effect blur, ghosting, jitter. On the contrary, motion compensation is smooth and clear.
The biggest advantage of motion compensation is that it effectively protects people's eye health. According to the survey, when watching TV, if the image is blurred, the human eye will constantly adjust the focus, prone to fatigue, and long-term visual impact. In addition, the motion picture shake will affect the viewing experience, people with sensitive motor nerves will feel uncomfortable, and they will feel dizzy even if they have a long time.
The advantages of MEMC technology:
1. Eliminating motion jitter; 2. Eliminating motion tailing; 3. Diagonal line compensation, re-emphasizing the slash image information, eliminating the stair-like contour; 4. Sharpness enhancement, restoring the original definition of the marginal contour.
Why use such technology? In fact, it is a wooden barrel principle, the hardware performance has reached the ability to decode 60Hz, and the signal frame rate of the transmission technology has also reached 60Hz, except for the content of the 60Hz content of the video content is very few. So even if you use a 60Hz TV, there is no corresponding hardware or the best results. This is just like you used a 4K TV, but there is no 4K source, watching SD video is still a reason. MEMC motion compensation can be said to be just a compromise, but the majority of program sources are shot at 24Hz or 30Hz. This technique has also become an essential tool.
Summary: MEMC motion compensation technology is an important indicator of the quality of television. It has now become almost standard. So this can't be your reason for buying a TV or it's a sign of the flagship high end. For TVs without this technology (the flagship models of some well-known brands are not available), the landlord suggested that friends who have requirements for picture quality should be cautiously purchased.
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, etc. on TV boxes, smart TVs, smart TV software, etc. Answering questions.
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