A Dynamic Black Rapid Response Laser Projection Control System

A control system and fast-response technology, which is applied in the direction of image reproducer, picture duplicator, and color TV parts of projection devices, can solve problems such as distortion, out-of-sync light source signal and signal of projection screen, and achieve optimal dynamic contrast , reduce the adjustment speed and signal shock, reduce the effect of signal shock interference

Active Publication Date: 2022-07-26
SHANXI OVISION OPTRONICS CO LTD
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Problems solved by technology

[0005] The present invention aims to solve the technical problem that the existing laser projection control system realizes the adjustment of the contrast of the projection screen by adjusting the current of the laser light source, which is prone to distortion caused by the asynchronous signal of the light source and the projection screen

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  • A Dynamic Black Rapid Response Laser Projection Control System
  • A Dynamic Black Rapid Response Laser Projection Control System

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Embodiment Construction

[0013] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0014] refer to figure 1 and figure 2 , A dynamic black fast response laser projection control system of the present invention includes an image conversion module, a system control module, a drive control module, a laser light source and a projection chip. The image conversion module is connected with the system control module. The image conversion module is used to convert the image signal into a TTL signal available to the system. The system control module is connected with the drive control module and the projection chip. The drive control module is divided into s...

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Abstract

The invention relates to a laser projection control system, in particular to a dynamic black fast response laser projection control system, and aims to solve the problem that the existing laser projection control system realizes the contrast adjustment technology of the projection picture by adjusting the current size of the laser light source, which is easy to occur because the light source signal The technical problem of the distortion phenomenon caused by the out-of-sync with the projected picture signal. The following technical solution is adopted: the drive control module is divided into two or more steps according to the size of the output current, which greatly reduces the adjustment speed and signal oscillation, thereby significantly improving the light source signal and the projection image signal when the light and dark images are rapidly switched. In addition, the present invention also proposes a dynamic black intervention judgment mechanism and a dynamic black signal processing method. Using the dynamic black technology of the algorithm, the details of the dark field are restored, and the projection image is optimized. Dynamic contrast ratio reduces system power consumption.

Description

technical field [0001] The invention relates to a laser projection control system, in particular to a dynamic black fast response laser projection control system. Background technique [0002] Improving the black point image is the most important means to improve the contrast of the projection image at present, and the dynamic black technology is one of the effective methods to improve the black point image. [0003] The dynamic black technology of traditional bulb projectors adjusts the amount of light hitting the imaging chip by adjusting the aperture of the diaphragm, so that the projected image has a better black field performance. The laser projection control system adjusts the amount of light hitting the imaging chip by adjusting the current of the laser light source, improving the dynamic contrast of the projected image, and effectively solving the mechanical complexity and poor reliability of the dynamic black adjustment of the bulb machine. [0004] However, by cha...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31
CPCH04N9/3161H04N9/3179
Inventor 陈海洋兰旭阳胡元元李泽太
Owner SHANXI OVISION OPTRONICS CO LTD
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