How does the projector achieve keystone correction?

There are two ways to correct trapezoids:

1. Optical correction is tilt shift. Same as the camera's tilt-shift lens. There is no effect on physical pixels, and the image quality is basically unchanged.

2. Digital correction is compressed into a reverse trapezoidal picture, projection. It is equivalent to cropping, and the picture quality deteriorates.

It is recommended not to use keystone correction as much as possible, as it will lose a lot of pixels and the image quality will also be lost for conversion.

Good projection with tilt shift function to avoid trapezoidal shapes.

The principle of keystone correction: in daily use, the position of the projector should be at right angles to the projection screen as far as possible to ensure the projection effect, if the two cannot be guaranteed vertically, the picture will produce a trapezoid. In this case, you need to use the "Keystone Correction" function to make adjustments to ensure that the picture is a standard rectangle.

1. Power on: (power on with remote control).

When the projector is turned on, the indicator flashes to indicate that the device is in the boot state, and when the indicator is no longer flashing, the next operation can be carried out. After turning on, the internal pressure of the projector bulb is greater than 10kg cm, and the filament temperature is thousands of degrees, and it is in a semi-molten state. Therefore, it is strictly forbidden to vibrate or move the projector in the boot state, and it is strictly forbidden to forcibly cut off the power to prevent the accessories from burning and exploding.

Second, in the process of use:

1. In the process of use, if there is an unexpected power failure but the projector still needs to be started, wait for the projector to cool down for 5-10 minutes before starting it again.

2. The continuous use time should not be too long, generally controlled within 4 hours, and the use time should be shorter in the high temperature environment in summer.

3. After turning on, pay attention to constantly switching the picture to protect the projector bulb, otherwise the LCD board or DMD board will overheat locally, causing permanent damage. Attached: Misunderstandings about the use of projectors:

1) When the conference is held, a fixed title is projected on the big screen for a long time.

2) Start the class an hour in advance and fix a screen without moving.

3) Fixed a screen in the middle of the class for more than 15 minutes without switching screens.

4) Forget to turn off the multi** projector after class.

3. Shutdown: (Shutdown with remote control).

You can't disconnect the power supply immediately after shutting down, and you have to wait for the projector's fan to stop rotating and the flashing light to stop flashing, so that the machine will automatically stop after the heat dissipation is completed. (5 minutes).

Fourth, others: 1. When the projector is idle, the power supply must be completely cut off.

2. Minimizing the number of times to turn on and off is beneficial to the life of the bulb.

3. It can be used in an environment with less dust, which can prolong its service life. Because the school's projectors are mostly used in multi-purpose halls, not simple electric classrooms, the dust-proof problem is more prominent.

It is necessary to keep the multi-function hall clean and hygienic frequently, and it is necessary to cooperate with many parties when using it, and special attention should be paid to some dusty activities. For example, the multi-purpose hall cannot be swept (easy to raise dust); After use, the doors and windows should be closed in time to prevent wind and sand from blowing in.

4. Correctly operate the projector keyboard, the projector operation keyboard is much slower than the computer keyboard, do not turn on and off the projector repeatedly, used to test the quality of the projector or find the signal, repeatedly switch on and off the projector in a short period of time, it will "strike" not to work, and it will shorten the service life of the projector.

1. In the first step, the slide projector is powered on and the power on button is turned on, and then press the menu button.

2. In the second step, move the cursor to "Screen" through the up and down keys on the screen, and press Select to select.

3. In the third step, move the cursor to "Keystone Correction" with the up and down keys and press Select to select.

4. Step 4: Move the cursor to "Keystone Correction" and select the Select button.

5. In the fifth step, press the up and down buttons according to the situation of the slide. Press the key to widen the upper part of the slide; Press the key to widen the bottom of the slide.

6. The sixth step, like this screen, should be pressed.

7. The seventh step, the following is the effect after the adjustment.

Summary. 1.In this case, you first need to adjust the position of the projector so that the two are vertical, if the two cannot be guaranteed to be vertical due to the constraints, then use the "keystone correction function" to correct the trapezoidal shape to ensure that the picture is a standard rectangle.

The keystone correction used in laser projection is digital keystone correction, that is, the correction process is realized by software calculation. 2.Four-point keystone correction:

By adjusting the four points up, down, left, and right, the whole picture is adjusted to a rectangle.

1.In this case, you first need to adjust the position of the projector to keep the two vertical, if the two are not guaranteed to be vertical due to the constraints of the conditions, then use the "keystone correction function" to correct the trapezoidal shape to ensure that the picture is a standard rectangle. The trapezoidal correction used in laser projection is the trapezoidal correction of digital collapse codes, that is, the correction process is realized by software calculation.

2.Four-point trapezoidal correction: By adjusting the upper, lower, left, and right 4 points, the whole picture is adjusted into a rectangle by the group source.

3. Eight-point trapezoidal correction: By adjusting the 8 points of upper, lower, left, right, upper, middle, lower, left, and right, the picture can be adjusted to a rectangle.

4. Correction precautions: the first boot guidance page will automatically pop up the adjustment page, if you enter the system later, you can adjust Lingfan through the setting menu - image settings, open the adjustment page, the cursor is in**, it means that the current point can be moved, and the position of the point can be moved by the remote control's "up-down-left-right" judgment to ensure that the picture projected by the entire equipment is a 16:9 rectangle.

During the use of the projector, there may be a trapezoidal deformation problem, which is caused by the unreasonable angle of the projector's light or the position of the equipment during projection, and the trapezoidal correction is required.

There are generally two ways to correct the trapezoid: manual adjustment and automatic adjustment.

Manual adjustment: If it is a manual adjustment, you first need to find the option of "Geometry Correction" or "Image Adjustment" in the menu bar and set it accordingly. Then you can adjust the position of the four corners to achieve the effect of trapezoidal correction. The specific steps are as follows:

1.Open the menu bar of the projector and find the "Geometry Correction" or "Image Adjustment" option.

2.Place the projector in a powered-up and warmed state.

3.In the menu bar, select options such as "Vertical Multi-Point Correction" or "Four-Point Correction".

4.Look at the four corners of the projection screen and find the corners where the trapezoidal effect is most obvious.

5.Depending on the projection image, adjust the position of the four corners so that they are as parallel to the bottom edge of the screen as possible.

6.Once you're done adjusting, make sure you want to save the settings.

Auto-adjustment: Auto-adjustment is more convenient than manual adjustment, just click the auto-adjust button on the remote control. The specific steps are like sailing under the dust:

1.Place the projector in a powered-up and warmed state.

2.Open the projector menu bar and find the "Image Adjustment" option.

3.Select the "Auto-Correct" option in the menu bar.

4.Then press the auto-correction button on the remote control state con Zen device, and the projector will automatically adjust and automatically save the settings when it is finished.

It should be noted that whether it is manual adjustment or automatic adjustment, it needs to be operated in a low-light environment to ensure the accuracy of the adjustment. Moreover, different brands of projectors may have different menu options and function settings, so it is recommended to carefully read the projector's operating manual before operating.

Place the projector sideways and open the system settings of the projector;||Find the keystone correction setting in the settings, select keystone correction, and correct the screen according to the reference imageA projector with automatic keystone correction that automatically corrects when the projector is moved.

1.Place the projector sideways and open the system settings of the projector;||

2.Find the keystone correction setting in the settings, select the keystone correction intent, and correct the screen according to the reference diagram;

3.The projector with automatic trapezoidal correction automatically corrects the lead field after moving the projector.

Summary. Projection automatic keystone correction can not be pointed.

First of all,The most important place to check is the dust accumulation problem of the home projector, especially the air inlet and exhaust outlet,Take a closer look at whether there is any dust,The place where there is dust should be cleaned with a brush round macro。 Due to the blockage of the air inlet or exhaust port, the projection will be poor.

Secondly, we need to take the home projector apart and inspect the interior.

When the top cover of the home projection camera is widened and opened, the entire internal structure appears in front of our eyes. At this time, we need to carefully observe whether the internal wiring and structure are damaged, and whether the interface is lost.

There is also the inspection of the lens part, and the problem of poor projection mostly appears in the lead trace hole in the lens structure, and the dusty places need to be cleaned, such as the withering and damaged Huai need to be repaired by Zhouchang.

Finally, the check of the power interface,This part should also be carefully protected when it is usually hungry and hail,When you don't need to be slow for a long time, you should pack the home projector and put it in a place that is not easy to rot and fall into dust。

The use of home projectors should be collected when not used, and they should be checked frequently.

Hopefully, my advice will help you.

Have a great day.

Have a great day.

Summary. Hello dear, projector keystone correction can be found in the menu. You can try pressing the "Menu" button on the projector remote once and then use the arrow keys to find the "Image Adjustments" or "Advanced Settings" option.

Here, you should be able to find the keystone correction option. If your projector doesn't have a remote control, you can look for the control buttons on the body and use them to access the menu. If you still can't find the keystone correction option, consult your projector's owner's manual for more assistance.

Dear, hello, the trapezoidal correction of the projection hall can be found in the menu. You can try pressing the "Menu" button on the projector remote once and then use the arrow keys to find the "Image Adjustments" or "Advanced Settings" option. From here, you should be able to find the Ladder Shape Correction option.

If your projector doesn't have a remote control, you can look for the control buttons on the body and use them to access the menu. If you still can't find the keystone correction option, consult your projector's owner's manual for more assistance. Dress as Tan.

Dear, to find where the projector keystone is corrected, you can also follow the steps below:1Turn on the projector and make sure it is properly connected to the Ruma monitor or projection screen.

2.Press the "Settings" (or "System", "Dishes & Orders" button, etc.) button on the remote control to enter the settings menu. 3.

In the settings menu, use the arrow keys on the remote control to navigate to the image settings or projection options. 4.In the image settings or projection options, you may see options such as Keystone Correction or Lens Adjustment.

5.Check the Keystone Correction or Lens Adjustment option, and then make adjustments as needed. It is important to note that different brands and models of projectors may have different keystone correction options and procedures.