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Projector and correction device thereof

A technology for projectors and projection cloths, which can be used in projection devices, instruments, televisions, etc., and can solve cumbersome problems

Inactive Publication Date: 2012-01-11
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Projector and correction device thereof
  • Projector and correction device thereof
  • Projector and correction device thereof

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Experimental program
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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:

[0033] Please refer to figure 1 A preferred embodiment of the projector 1 of the present invention includes an image input unit 10, a microprocessor unit 12, an image processor unit 13, an optical processing unit 15, a reference point projection unit 20, and a position sensing unit 22 And a power supply unit 16 . Wherein the microprocessor unit 12 , the reference point projection unit 20 and the position sensing unit 22 form a calibration device.

[0034] During use, the user can connect the computer 18 or other devices to the image input unit 10 to input the images of the computer 18 or other devices into the projector 1 . 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 a...

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PUM

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Abstract

The invention discloses a correction device for a projector. The correction device comprises a reference point projection unit, a position sensing unit and a microprocessor unit. The reference point projection unit is used for projecting a reference point to projection screen fabric to form a plurality of projective points. The position sensing unit comprises a plurality of position sensors, and is used for emitting a light ray to the projection screen fabric. When the projector is arranged horizontally, a square formed by light spots on the projection screen fabric is overlapped with a square formed by the plurality of projective points. When a lens of the projector is elevated, the microprocessor unit is used for correcting the position of the reference point corresponding to the position of the position sensor receiving the light ray reflected by the projection screen fabric until the projective points on the projection screen fabric are overlapped with the light spots again respectively. The invention also provides the projector comprising the correction device.

Description

technical field [0001] The invention relates to a projector and a calibration device thereof. Background technique [0002] Generally, when using a projector, a 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. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74G03B21/00
Inventor 谢明志
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD