Unlock instant, AI-driven research and patent intelligence for your innovation.

Rear projection display and its image correction circuit and method

An image correction and display technology, applied in static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of inability to correct image deformation, general products without structure, and inconvenient image correction methods.

Inactive Publication Date: 2009-08-26
CHUNGHWA PICTURE TUBES LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the user uses the correction device provided in the prior art, although the image projected on the non-vertical surface can be corrected to a good effect, it can only correct the distortion caused by the non-vertical projection, but cannot correct it. Image distortion caused by high degree curve
[0009] It can be seen that the above-mentioned existing image correction method obviously still has inconvenience and defects, and needs to be further improved urgently.
In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously related. The problem that the industry is eager to solve

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
  • Rear projection display and its image correction circuit and method
  • Rear projection display and its image correction circuit and method
  • Rear projection display and its image correction circuit and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] In order to further explain the technical means and effects that the present invention adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation methods, Structure, method, step, feature and effect thereof are as follows in detail.

[0047] The projection display technology of a projection display is an indirect imaging technology. After using imaging technologies such as cathode ray tube displays, liquid crystal displays, or digital light source processing displays to generate images, the images are projected to a long-distance display using a lens group (projection lens). On the screen, an image that can be perceived by the human eye is formed. Projection displays are generally divided into two types: front projection and rear projection. The main difference lies in which direction the human eye sees the image from the screen. If it is seen from the front, it is u...

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 present invention relates to an image correction circuit, which is suitable for a projection display. The image correction circuit includes: a parameter input unit, a data temporary storage unit and a geometric conversion unit. The parameter input unit is used to provide vertical axis correction parameters and horizontal axis correction parameters. The data temporary storage unit is electrically connected to the parameter input unit for temporarily storing the vertical axis correction parameters and the horizontal axis correction parameters. The geometric conversion unit is used for receiving an input picture data with a plurality of pixels, and then multiplies the vertical axis coordinate of each pixel by the vertical axis correction parameter, so as to convert each pixel to a new vertical axis coordinate, and convert each pixel to a new vertical axis coordinate. The horizontal axis coordinate where a pixel is located is multiplied by the horizontal axis correction parameter to convert each pixel to a new horizontal axis coordinate. Finally, the converted new vertical and horizontal axis coordinates are sent to the display to display the image for the user to watch.

Description

technical field [0001] The invention relates to an image correction device and method, in particular to an image correction device and method for a projection display. Background technique [0002] With the substantial improvement of computer performance and the high development of Internet and multimedia technology, most of the transmission of image information has changed from analog transmission to digital transmission. In order to adapt to the modern life style, the volume of video or imaging devices tends to be thinner and thinner day by day. Although the traditional cathode ray tube (Cathode Ray Tube, CRT) display still has the advantage of low price, it is bulky and takes up space, and has problems such as radiation damage to eyes when outputting images. [0003] Therefore, recently developed flat panel displays (Flat Panel Displays, FPDs), such as liquid crystal displays (Liquid Crystal Displays, LCDs), organic electroluminescent displays (Organic LightEmitting Diod...

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 Patents(China)
IPC IPC(8): G09G3/36G09G3/20G09G5/00G02F1/133
Inventor 戴文智丘显钧刘家麟莫启能
Owner CHUNGHWA PICTURE TUBES LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com