Dynamic black fast response laser projection control system

A control system and fast-response technology, applied in the direction of using the image reproducer of the projection device, the picture duplicator, the parts of the color TV, etc., can solve the problems of the signal asynchrony and distortion of the light source signal of the projection screen, and achieve the optimized dynamic contrast ratio. , Improve the synchronization rate, reduce the adjustment speed and the effect of signal oscillation

Active Publication Date: 2021-07-09
SHANXI OVISION OPTRONICS CO LTD
View PDF12 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dynamic black fast response laser projection control system
  • Dynamic black fast response laser projection control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended 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 for the system. The system control module is connected with the drive control module and the projection chip. The drive control module is divided into ladd...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a laser projection control system, in particular to a dynamic black quick response laser projection control system. The objective of the invention is to solve the technical problem of distortion caused by desynchrony of a light source signal and a projection picture signal in a technology of realizing projection picture contrast adjustment by adjusting the current of a laser light source in an existing laser projection control system. According to the technical scheme, a driving control module is divided into two or more modules in a stepped mode according to the magnitude of output current, the adjusting speed and signal oscillation are greatly reduced, and therefore the synchronization rate of a light source signal and a projection picture signal when bright and dark pictures are rapidly switched is obviously increased, and signal oscillation interference is reduced; in addition, the invention also provides a dynamic black intervention judgment mechanism and a dynamic black signal processing mode, the dynamic black technology of the algorithm is applied, dark field details are restored, the dynamic contrast of a projection picture is optimized, and the electric power consumption of the system is reduced.

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 field image is currently the most important means to improve the contrast of the projected image, and the dynamic black technology is one of the effective methods to improve the black field image. [0003] The dynamic black technology of traditional bulb projectors is to adjust the amount of light hitting the imaging chip by adjusting the size of the aperture, so that the projection screen has a better black field performance. The laser projection control system adjusts the amount of light on the imaging chip by adjusting the current of the laser light source, and improves the dynamic contrast of the projection screen, effectively solving the problem of mechanical complexity and poor reliability of the dynamic black adjustment of the bulb machine. [0004] However,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap