KR930015887A - 비디오 신호 향상 방법 및 장치 - Google Patents

비디오 신호 향상 방법 및 장치 Download PDF

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Publication number
KR930015887A
KR930015887A KR1019920023308A KR920023308A KR930015887A KR 930015887 A KR930015887 A KR 930015887A KR 1019920023308 A KR1019920023308 A KR 1019920023308A KR 920023308 A KR920023308 A KR 920023308A KR 930015887 A KR930015887 A KR 930015887A
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KR
South Korea
Prior art keywords
analog
digital
light modulator
spatial light
signal
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KR1019920023308A
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English (en)
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KR100248848B1 (ko
Inventor
디. 헨드릭스 헨리
엠.어바너스 폴
Original Assignee
윌리엄 이. 힐러
텍사스 인스트루먼츠 인코포레이티드
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Publication of KR930015887A publication Critical patent/KR930015887A/ko
Application granted granted Critical
Publication of KR100248848B1 publication Critical patent/KR100248848B1/ko

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/202—Gamma control
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/28—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using colour tubes
    • G09G1/285—Interfacing with colour displays, e.g. TV receiver
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/346—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on modulation of the reflection angle, e.g. micromirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7458—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of deformable mirrors, e.g. digital micromirror device [DMD]
    • H04N2005/7466—Control circuits therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

비디오 신호를 향상시키기 위한 방법 및 회로가 기술되어 있다. 본 방법 및 회로를 방송단에서 부가된 감마 보상을 무효화하는데 이용되어 공간 광 변조기 디스플레이를 사용하는 음극선 관 신호를 개선한다. 그밖에, 본 발명 및 회로를 컴퓨터 모니터용 디스플레이 또는 감마 무효화를 필요치 않는 다른 형태에 사용되어 일반적으로 화질을 향상시킨다.

Description

비디오 신호 향상 방법 및 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 신호 향상 방법의 플로우 챠트, 제2도는 3색 분리 신호 향상 회로의 예를 도시한 도면, 제3도는 적응 제어 신호 향상 회로의 예를 도시한 도면.

Claims (11)

  1. 방송 신호를 향상시키는 방법에 있어서, a. 입력 디지탈 워드를 제공하는 단계, b 메모리 테이블내의 상기 디지탈 워드를 룩 업하는 단계, c. 상기 입력 신호보다 작은 수의 비트를 갖는 출력 신호를 상기 입력 신호에 대응하여 선택하는 단계, d. 상기 출력 신호를 공간 광 변조기 어레이에 전송하는 단계, e. 상기 신호를 상기 어레이상에 로드하는 단계, 및 f. 상기 신호를 디스플레이하는 단계를 포함하는 것을 특징으로 하는 방법.
  2. 제1항에 있어서, 상기 제공 단계가 3색 입력 신호 각각에 전용인 3개의 아날로그-디지탈 변환기의 사용을 포함하는 것을 특징으로 하는 방법.
  3. 제1항에 있어서, 상기 룩 업 단계가 상기 메모리 테이블의 외부에 있는 제어회로에 의해 지시되는 것을 특징으로 하는 방법.
  4. 제1항에 있어서, 상기 공간 광 변조기 어레이가 변형가능 미러 장치 어레이로 구성되는 것을 특징으로 하는 방법.
  5. 제1항에 있어서, 상기 공간 광 변조기 어레이가 액정 셀 어레이로 구성되는 것을 특징으로 하는 방법.
  6. 방송 신호를 향상시키기 위한 회로에 있어서, a. 상기 신호를 수신하여 이를 디지탈 워드로 디지탈화하기 위한 적어도 하나의 아날로그-디지탈 변환기, b. 제2디지탈 워드에 대응하는 상기 디지탈 워드의 맵핑을 포함하고, 상기 아날로그-디지탈 변환기와 전기 접속 되어 있는 하나 이상의 메모리룩 업 테이블, c. 상기 제2 디지탈 워드를 수신할 수 있고 상기 아날로그-디지탈 변환기와 접속된 어드레싱 회로, 및 d. 상기 제2 디지탈 워드를 디스플레이할 수 있고 상기 어드레싱 회로에 접속된 공간 광 변조기 어레이를 포함하는 것을 특징으로 하는 시스템.
  7. 제6항에 있어서, 상기 적어도 하나의 아날로그-디지탈 변환기가 3개의 아날로그-디지탈 변환기를 포함하는 것을 특징으로 하는 시스템.
  8. 제6항에 있어서, 상기 메모리 룩 업 테이블의 하나의 1K x 8EPROM내에 내장되는 것을 특징으로 하는 시스템.
  9. 제6항에 있어서, 상기 각각의 아날로그-디지탈 변환기가 전용 메모리 룩 업테이블에 전기적으로 접속되는 것을 특징으로 하는 시스템.
  10. 제6항에 있어서, 상기 공간 광 변조기 어레이는 변형가능 미러 셀들로 구성되는 것을 특징으로 하는 시스템.
  11. 제6항에 있어서, 상기 공간 광 변조기 어레이는 액정 셀들로 구성되는 것을 특징으로 하는 시스템.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920023308A 1991-12-05 1992-12-04 비디오신호 향상방법 및 장치 KR100248848B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80324691A 1991-12-05 1991-12-05
US803,246 1991-12-05

Publications (2)

Publication Number Publication Date
KR930015887A true KR930015887A (ko) 1993-07-24
KR100248848B1 KR100248848B1 (ko) 2000-03-15

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Country Status (4)

Country Link
US (1) US5303055A (ko)
EP (2) EP0545412A3 (ko)
KR (1) KR100248848B1 (ko)
DE (1) DE69231194T2 (ko)

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Also Published As

Publication number Publication date
EP0841810A1 (en) 1998-05-13
EP0545412A3 (en) 1993-11-03
US5303055A (en) 1994-04-12
EP0545412A2 (en) 1993-06-09
DE69231194D1 (de) 2000-07-27
EP0841810B1 (en) 2000-06-21
KR100248848B1 (ko) 2000-03-15
DE69231194T2 (de) 2001-02-15

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