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Image display system and image display method using parallel beam scanning imaging

A technology of image display and scanning imaging, applied in the field of projection display, can solve the problem that the luminous power cannot be industrialized, and achieve the effect of solving the problem of precise image synchronization, corresponding improvement of linearity, and corresponding improvement of scanning linearity.

Active Publication Date: 2014-12-24
SHANGHAI NAT ENG RES CENT OF DIGITAL TELEVISION
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and an image display system for beam parallel scanning and imaging, which are used to solve the problem that the existing laser scanning TV cannot be industrialized due to technical bottlenecks such as the beam scanning mechanism module and the luminous power of the laser light source.

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  • Image display system and image display method using parallel beam scanning imaging
  • Image display system and image display method using parallel beam scanning imaging
  • Image display system and image display method using parallel beam scanning imaging

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Embodiment Construction

[0022] The following description takes the laser scanning projection display system as an example for illustration, but the high-brightness LED light source projection scanning system can also adopt the following technical solutions.

[0023] see figure 1 As shown, it is a system architecture diagram of an image display system for parallel scanning and imaging of laser beams for implementing the present invention. The image display system 1 for parallel scanning and imaging of laser beams includes:

[0024] Image recombination pixel signal processing unit 101, used to receive and process the input image signal, output the image signal of the three primary color signals in the image signal, the line synchronous signal and the field synchronous signal synchronous with the image display and the subframes generated by the processing thereof Line and field synchronous signal, wherein the image reconstruction pixel signal processing unit 101 divides each frame of input image into N ...

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Abstract

Disclosed are an image display system and an image display method using parallel beam scanning imaging. Each frame of an input image signal is divided into N subframes. Each two subframes are spaced by M scanning lines or rows. A coaxial white light beam synthesized by tricolor laser beams is generated according to tricolor brightness of each subframe of the image signal. Strength of the coaxial white light beam is proportioned to a tricolor signal of the image signal. N coaxial white light beams synthesized by the tricolor laser beams are horizontally and vertically scanned and moved to a screen in a parallel and synchronous manner to form an image. Accordingly, MEMS (micro-electromechanical systems) galvanometric scanner amplitude in horizontal or vertical N-group direction is lowered by N times, scanning linearity is improved; vibration frequency of the MEMS galvanometric scanner in horizontal direction is lowered by N times, linearity is improved; each group of signal modulation frequency during digital modulation is lowered by N times, signal bandwidth requirements are lowered; and low-cost and low-power diode can be used for each group of light sources, overall system cost is lowered, and industrialized popularization is facilitated.

Description

【Technical field】 [0001] The invention belongs to the technical field of projection display and can be applied to laser scanning projection display systems and high-brightness LED light source projection scanning systems. 【Background technique】 [0002] The existing system architecture of laser scanning TV mainly has the following two bottlenecks: [0003] The first is that the scanning mechanical device in the optical scanning mechanism module and its servo and precise synchronization technology are difficult and high-speed, and it is not easy to industrialize mass production. The current existing scanning scheme is still based on the servo motor multi-faceted wheel mirror scanning scheme. Other methods such as high-frequency crystal vibration (currently only used for frame frequency) MEMS vibrating mirror, etc., because the vibration frequency does not meet the required image line frequency. And less applied. Taking the PAL standard definition TV as an example, the multi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10H04N5/74
Inventor 殷惠清
Owner SHANGHAI NAT ENG RES CENT OF DIGITAL TELEVISION
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