XGIMI Player
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With the development of science and technology, TV gradually no longer meets the consumer's consumer demand. The projection industry is particularly hot in recent years. The projector has slowly entered the public's line of sight, and it is a new product that replaces TV, because projection is still for ordinary people. This new product has never been in touch and I do n’t know how to buy it. Today I will teach you how to choose the projection that suits your needs.
Several major elements you need to know when purchasing a projector:
Several major elements you need to know when purchasing a projector:
1. Clarify the nature of the source to be displayed
That is, what is the line frequency and what is the output of the display card. According to the nature of the displayed source, projectors can be divided into ordinary video machines and digital machines. When only the full TV signal is displayed, such as karaoke hall playing video, you can choose a common video machine; to display the signal output by the VGA card, you can choose a digital machine.
2. Confirm the installation method
Projector installation methods are divided into table-type front projection, ceiling-mounted front projection, table-type rear projection, and ceiling-mounted rear projection. Front projection is when the projector and the audience are on one side; rear projection is when the projector and the audience are at both ends of the screen. If it is used temporarily, you can choose the table ceiling. If the space is large and there are overall arrangements during civil construction, the overall effect of choosing the rear projection method is the best. If the space is small, the method of rear projection refraction can be selected.
3. Find out the display environment, such as indoor area size and lighting conditions
If the indoor area is less than 100 square meters, the display area is moderate, there is no sunlight, and the lighting is dim, you can choose a projector with a brightness of about 2000-3500 lumens. When the ambient light is bright, and it is used in a relatively spacious place, the display area is large, you need to choose a high display resolution, high brightness projector, you can choose a high-brightness projector with 3000-6000 lumens.
That is, what is the line frequency and what is the output of the display card. According to the nature of the displayed source, projectors can be divided into ordinary video machines and digital machines. When only the full TV signal is displayed, such as karaoke hall playing video, you can choose a common video machine; to display the signal output by the VGA card, you can choose a digital machine.
2. Confirm the installation method
Projector installation methods are divided into table-type front projection, ceiling-mounted front projection, table-type rear projection, and ceiling-mounted rear projection. Front projection is when the projector and the audience are on one side; rear projection is when the projector and the audience are at both ends of the screen. If it is used temporarily, you can choose the table ceiling. If the space is large and there are overall arrangements during civil construction, the overall effect of choosing the rear projection method is the best. If the space is small, the method of rear projection refraction can be selected.
3. Find out the display environment, such as indoor area size and lighting conditions
If the indoor area is less than 100 square meters, the display area is moderate, there is no sunlight, and the lighting is dim, you can choose a projector with a brightness of about 2000-3500 lumens. When the ambient light is bright, and it is used in a relatively spacious place, the display area is large, you need to choose a high display resolution, high brightness projector, you can choose a high-brightness projector with 3000-6000 lumens.
4. Purchase skills of on-site projector
a. Check the horizontal scanning tracking frequency range
According to the horizontal scanning frequency range given in the technical indicators, select the three frequencies of high, medium and low from the middle to calculate the image resolution corresponding to the three frequency points. Check whether the projector can display normally under these three resolutions. If the line is out of synchronization, that is, the screen twists or shakes, etc., it means that the horizontal scanning and tracking are poor.
b. Check the focusing performance
use the test grid generated inside the projector, or the test grid generated by the signal generator or computer, adjust the focus to the best position, and change the image contrast from low to high. Observe the level of the grid and Whether the vertical lines are defocused.
c. Check the video bandwidth.
Video bandwidth directly affects the details of the video. Use a computer or a signal generator to generate the highest resolution white background graphic signal that the projector can reach, and observe whether the smallest character graphic on the screen is clear. For example, when the video bandwidth of the projector is insufficient, the horizontal lines displayed on the screen are relatively solid, while the vertical lines are blurred, and the image details are blurred.
According to the above-mentioned projector purchase skills, I hope everyone can choose their favorite projection.
