Projector and its calibration device
A technology for calibrating devices and projectors, applied in projection devices, instruments, televisions, etc., can solve cumbersome and other problems
Inactive Publication Date: 2011-12-28
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology
During the adjustment process, the user needs to judge whether the adjusted image meets the requirements. If it does not meet the requirements, it needs to repeat the adjustment, which is very cumbersome.
Method used
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[0032] Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:
[0033] see figure 1 , The preferred embodiment of the projector of the present invention comprises an image input unit 10, a microprocessor unit 12, an image processor unit 13, an optical processing unit 15, a distance detection unit 20, and an elevation angle detection unit 22 And a power supply unit 16 . Wherein the microprocessor unit 12 , the distance detection unit 20 and the elevation angle detection unit 22 form a calibration device.
[0034] In use, the user can connect a computer or other devices to the image input unit 10 to input images from the computer 18 or other devices into the projector. The image is output after being processed by the microprocessor unit 12 and the image processor unit 13 , and then the processed image is projected to the projection cloth 19 via the optical processing unit 15 , so as to achieve image present...
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A calibration device for a projector, comprising a distance detection unit, an elevation angle detection unit and a microprocessor unit, the distance detection unit is arranged on the front side of the projector for detecting the distance detection unit The distance between the projection point projected onto a projection cloth, the elevation angle detection unit is arranged in the supporting feet of the projector for detecting the elevation angle of the projector, and the microprocessor unit is used to obtain the distance according to the The distance between the detection unit and the projection point projected on the projection cloth and the corresponding keystone correction value calculated by the elevation angle of the projector, and the keystone correction value is transmitted to the image processor unit of the projector, and the image processor The unit is used to perform keystone correction on the input image according to the keystone correction value, and project the corrected image to the projection cloth through the optical processing unit. The present invention also provides a projector including the above-mentioned correction device.
Description
technical field [0001] The invention relates to a projector and a calibration device thereof. Background technique [0002] When a general projector is in use, the user needs to manually adjust the image projected by the projector so that the projector can present the best image. Generally speaking, when using a projector, the lens of the projector is usually slightly raised, so the picture projected on the projection cloth will become a trapezoid due to the raised lens. In this case, the user needs to manually adjust the parameters of the projector to adjust the screen offset. During the adjustment process, the user needs to judge whether the adjusted image meets the requirements. If it does not meet the requirements, the adjustment needs to be repeated, which is very cumbersome. Contents of the invention [0003] In view of the above, it is necessary to provide a calibration device capable of automatic calibration and a projector including the calibration device. [0...
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IPC IPC(8): H04N5/74G03B21/00
Inventor 谢明志
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD