Projection display based galvanometer automatic synchronization system and method

An automatic synchronization, projection display technology, applied in the field of projection display technology, can solve the problem of inaccurate adjustment of the galvanometer and image frame sequence synchronization, and achieve the effect of accurate synchronization adjustment

Active Publication Date: 2018-11-06
SICHUAN CHANGHONG ELECTRIC CO LTD
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Problems solved by technology

[0004] In order to solve the technical problem of inaccurate adjustment of the synchronization between the galvanometer and the image frame sequence in the prior art, the present invention proposes an automatic synchronization system and automatic synchronization method for the galvanometer based on projection display

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  • Projection display based galvanometer automatic synchronization system and method

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Embodiment

[0066] The technical scheme of the present invention will be described in detail below with examples.

[0067] Such as figure 1 As shown, the hardware system of this example includes an image processing module, a digital light control module, a light valve, a galvanometer control module, a galvanometer, an imaging lens, an image acquisition module, and an image analysis module. The module is connected with the light valve, the vibrating mirror control module is respectively connected with the image processing module and the vibrating mirror, and the image analysis module is respectively connected with the image acquisition module and the image processing module.

[0068] When using it, you need to preset the test picture in the system first. The test picture in this example contains multiple test images with independent areas, and each test image is grayscaled and normalized separately and saved. What is obtained is the standard image corresponding to each test image.

[006...

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Abstract

The invention discloses a projection display based galvanometer automatic synchronization system and method, relates to the projection display technology, and solves the technical problem of inaccurate adjustment of synchronization of a galvanometer and a frame sequence of an image in the prior art. The technical scheme is summarized as follows: an image processing module outputs a test picture toobtain a projection image, an image acquisition module continuously acquires projection images to obtain at least one acquisition image, an image analysis module overlaps the acquisition image to obtain a to-be-analyzed image, the to-be-analyzed image and the test picture are compared to calculate the deviation value, whether the galvanometer and the frame sequence are synchronized is judged according to the size of the deviation value, and the image processing module adjusts the working phase position of the galvanometer according to the judgement result. The projection display based galvanometer automatic synchronization system and method has the beneficial effects that the condition that the definition of the projection image is observed by human eyes in the prior art is avoided, and the adjustment of synchronization of the galvanometer and the frame sequence of the image is more accurate. The projection display based galvanometer automatic synchronization system and method is particularly suitable for projector equipment extending the display resolution by adding the galvanometer.

Description

technical field [0001] The invention relates to the projection display technology, in particular to the projection display technology which expands the display resolution by adding vibrating mirrors. Background technique [0002] In general, the highest resolution of the projection display is determined by the physical resolution of the light valve. In the prior art, adding a vibrating mirror to the projection light path can realize the doubling of the display resolution in one or two directions. When the galvanometer is working, it vibrates slightly back and forth at certain positions to realize the back and forth offset of light. The image processor will divide the image data into frame sequences. At a certain moment, when the position of the galvanometer corresponds to the sequence of image frames, that is, the working time Only when the phase is synchronized with the image frame sequence can you see a clear projection picture and realize the expansion of display resoluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31
CPCH04N9/3141H04N9/3191
Inventor 蔡静胥立
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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