KR970032038A - Asymmetric Image Correction Control Method of Projection Image Display System - Google Patents

Asymmetric Image Correction Control Method of Projection Image Display System Download PDF

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Publication number
KR970032038A
KR970032038A KR1019950040954A KR19950040954A KR970032038A KR 970032038 A KR970032038 A KR 970032038A KR 1019950040954 A KR1019950040954 A KR 1019950040954A KR 19950040954 A KR19950040954 A KR 19950040954A KR 970032038 A KR970032038 A KR 970032038A
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KR
South Korea
Prior art keywords
image signal
missing
image
pixel
signal
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Application number
KR1019950040954A
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Korean (ko)
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KR100188215B1 (en
Inventor
우성재
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배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950040954A priority Critical patent/KR100188215B1/en
Priority to JP8314118A priority patent/JPH09200663A/en
Priority to EP96308201A priority patent/EP0773679A3/en
Priority to US08/747,087 priority patent/US5752758A/en
Priority to CN96121369A priority patent/CN1158537A/en
Publication of KR970032038A publication Critical patent/KR970032038A/en
Application granted granted Critical
Publication of KR100188215B1 publication Critical patent/KR100188215B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Projection Apparatus (AREA)

Abstract

본 발명은 투사형 화상표시시스템의 비대칭화면 보정제어방법에 관한 것으로, 화상처리수단에 의해 처리된 화상 신호를 스크린에 투사하는 투사형 화상표시시스템에 있어서, 상기 스크린상에 투사되는 상기 화상신호의 투사각에 대응하는 보정량제어신호에 따라 수평주사기간에서 화상의 보정을 위한 화소의 누락량을 결정하고, 그 화소의 누락량이 결정된 화상신호에 대해 전체적으로 균등한 지연시간이 설정된 상태에서 화상신호의 메모리기록/클럭신호를 생성하고, 상기 화상신호에 대해 전체적으로 균등한 지연시간이 설정된 상태에서 상기 화소의 누락을 위한 메모리기록/클럭신호의 생성을 제어하여 화소의 누락처리가 실행되도록 화상신호의 메모리기록/독출을 수행하며, 그 메모리독출된 화상신호의 누락된 화소위치에 블랭킹데이타가 삽입되도록 하여 선보정된 화상신호를 얻도록 된 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling asymmetric screen correction of a projection type image display system, comprising: a projection type image display system for projecting an image signal processed by an image processing means onto a screen, the projection angle of the image signal being projected on the screen; According to the corresponding correction amount control signal, the amount of missing pixels for image correction is determined in the horizontal scanning period, and the memory recording / clock of the image signals is set with an overall delay time set for the image signal for which the missing amount of pixels is determined. Generates a signal and controls the generation of a memory write / clock signal for missing the pixel with an equal delay time set to the image signal as a whole, thereby performing memory write / read of the image signal so that the pixel missing process is executed. And blanking data is inserted at a missing pixel position of the memory-read image signal. That is to the line so as to obtain a corrected image signal.

Description

투사형 화상표시시스템의 비대칭화면 보정제어방법Asymmetric Image Correction Control Method of Projection Image Display System

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 2도는 본 발명에 따른 비디칭화면 보정제어방법이 적용된 투사형 화상표시시스템의 비대칭화면 보정장치를 나타낸 블록구성도.2 is a block diagram showing an asymmetric screen correction apparatus of a projection type image display system to which a non-dimming screen correction control method according to the present invention is applied.

제 3도는 제 2도에 도시된 투사형 화상표시시스템의 비대칭화면 보정장치에 의해 실행되는 비대칭화면의 보정제어를 설명하기 위한 파형도.3 is a waveform diagram for explaining correction control of an asymmetric screen executed by the asymmetric screen correction apparatus of the projection image display system shown in FIG.

제 4도 (a) 내지 제 4도 (e)는 제 2도에 도시된 보 발명에 따른 투사형 화상표시시스템의 비대칭화면 보정장치에 의한 화면보정과정을 설명하는 도면이다.4 (a) to 4 (e) are views for explaining a screen correction process by the asymmetric screen correction apparatus of the projection type image display system according to the invention shown in FIG.

Claims (1)

화상처리수단에 의해 처리된 화상신호를 스크린에 투사하는 투사형 화상표시시스템에 있어서, 상기 스크린상에 투사되는 상기 화상신호의 투사각에 대응하는 보정량제어신호에 따라 수평주사기간에서 화상의 보정을 위한 화소의 누락량을 결정하고, 그 화소의 누락량이 결정된 화상신호에 대해 전체적으로 균등한 지연시간이 설정된 상태에서 화상신호의 메모리기록/클럭신호를 생성하며, 상기 화상신호에 대해 전체적으로 균등한 지연시간이 설정된 상태에서 상기 화소의 누락을 위한 메모리기록/클럭신호의 생성을 제어하여 화소의 누락처리가 실행되도록 화상신호의 메모리기록/독출을 수행하고, 그 메모리독출된 화상신호의 누락된 화소위치에 블랭킹데이타가 삽입되도록 하여 선보정된 화상신호를 얻도록 된 것을 특징으로 투사형 화상표시시스템의 비대칭화면 보정제어방법.A projection type image display system for projecting an image signal processed by an image processing means onto a screen, the pixel for correcting an image in a horizontal scanning period in accordance with a correction amount control signal corresponding to the projection angle of the image signal projected on the screen. Determine a missing amount of the pixel, generate a memory write / clock signal of the image signal with an overall delay time set for the image signal for which the pixel missing amount is determined, and set an overall delay time for the image signal In this state, memory write / read of the image signal is performed to control the generation of the memory write / clock signal for the missing of the pixel to execute the missing process of the pixel, and blanking data is placed at the missing pixel position of the memory read image signal. Is inserted to obtain a predetermined image signal. Asymmetric screen correction control method of stem. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950040954A 1995-11-13 1995-11-13 Asymmetric picture compensating control method for projector KR100188215B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1019950040954A KR100188215B1 (en) 1995-11-13 1995-11-13 Asymmetric picture compensating control method for projector
JP8314118A JPH09200663A (en) 1995-11-13 1996-11-12 Advance compensation method for asymmetrical image in projection type image display system
EP96308201A EP0773679A3 (en) 1995-11-13 1996-11-13 Method for pre-compensating an asymmetrical picture in a projection system for displaying a picture
US08/747,087 US5752758A (en) 1995-11-13 1996-11-13 Method for pre-compensating an asymmetrical picture in a projection system for displaying a picture
CN96121369A CN1158537A (en) 1995-11-13 1996-11-13 Method for pre-compensating asymmetrical picture in projection system for displaying picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950040954A KR100188215B1 (en) 1995-11-13 1995-11-13 Asymmetric picture compensating control method for projector

Publications (2)

Publication Number Publication Date
KR970032038A true KR970032038A (en) 1997-06-26
KR100188215B1 KR100188215B1 (en) 1999-06-01

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KR1019950040954A KR100188215B1 (en) 1995-11-13 1995-11-13 Asymmetric picture compensating control method for projector

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020000940A (en) * 2000-06-22 2002-01-09 구자홍 Apparatus and method for correcting keystone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020000940A (en) * 2000-06-22 2002-01-09 구자홍 Apparatus and method for correcting keystone

Also Published As

Publication number Publication date
KR100188215B1 (en) 1999-06-01

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