KR970068497A - 디지탈 카메라 - Google Patents

디지탈 카메라 Download PDF

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Publication number
KR970068497A
KR970068497A KR1019970008141A KR19970008141A KR970068497A KR 970068497 A KR970068497 A KR 970068497A KR 1019970008141 A KR1019970008141 A KR 1019970008141A KR 19970008141 A KR19970008141 A KR 19970008141A KR 970068497 A KR970068497 A KR 970068497A
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KR
South Korea
Prior art keywords
digital
clamp
clamp area
area
analog
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KR1019970008141A
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English (en)
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KR100411207B1 (ko
Inventor
아끼오 고바야시
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다까노 야스아끼
상요덴기 가부시끼가이샤
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Publication of KR970068497A publication Critical patent/KR970068497A/ko
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Publication of KR100411207B1 publication Critical patent/KR100411207B1/ko

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    • 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
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/843—Demosaicing, e.g. interpolating colour pixel values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
    • H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
    • H04N25/13—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements
    • H04N25/134—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on three different wavelength filter elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/40—Extracting pixel data from image sensors by controlling scanning circuits, e.g. by modifying the number of pixels sampled or to be sampled
    • H04N25/44—Extracting pixel data from image sensors by controlling scanning circuits, e.g. by modifying the number of pixels sampled or to be sampled by partially reading an SSIS array
    • H04N25/447—Extracting pixel data from image sensors by controlling scanning circuits, e.g. by modifying the number of pixels sampled or to be sampled by partially reading an SSIS array by preserving the colour pattern with or without loss of information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2209/00—Details of colour television systems
    • H04N2209/04—Picture signal generators
    • H04N2209/041—Picture signal generators using solid-state devices
    • H04N2209/042—Picture signal generators using solid-state devices having a single pick-up sensor
    • H04N2209/045—Picture signal generators using solid-state devices having a single pick-up sensor using mosaic colour filter
    • H04N2209/046—Colour interpolation to calculate the missing colour values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
    • H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
    • H04N25/13—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements
    • H04N25/135—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on four or more different wavelength filter elements
    • H04N25/136—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on four or more different wavelength filter elements using complementary colours

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Color Television Image Signal Generators (AREA)
  • Studio Devices (AREA)

Abstract

CCD 출력 신호는 아날로그 클램프 회로(43)에 의해 아날로그 클램프 에리어에 클램프되고, 그 후 A/D변환기(46)에서 디지탈 신호로 변환된다. 디지탈 신호는 그 후 클램프 레벨 산출 회로(50)에서 클램프 레벨을 산출되고, 이것에 의해 제1감산 회로(82)에서 디지탈 클램프를 건다. 여기에서, 아날로그 클램프 에리어는 그횡 방향 양단이 디지탈 클램프 에리어외에 위치하도록 설정된다. 따라서, 아날로그 클램프를 가할 때에 아날로그 클램프 에리어의 횡 방향 양단에서 CCD 출력 신호에 노이즈가 중첩됨으로써도 그 노이즈가 디지탈 클램의 처리에 영향을 미치지 않는다.
아날로그 클램프 에리어의 횡 방향 양단이 디지탈 클램프 에리어외에 위치하도록 아날로그 클램프 에리어를 설정했기 때문에, CCD 출력에 적절한 디지탈 클램프를 가할 수 있다.

Description

디지탈 카메라
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
도12는 도1실시예의 신호 처리 회로를 도시하는 블럭도.

Claims (5)

  1. CCD 이미지 생성 장치로부터 출력되는 각 라인 신호를 상시 CCD 이미지 생성 장치의 아날로그 클램프 에리어에서 아날로그 클램프 수단에 의해 클램프한 후 디지탈 신호로 변환하고, 상기 디지탈 신호를 디지탈 클램프 에리어에서 디지탈 클램프 수단에 의해 클램프하는 디지탈 카메라에 있어서, 상기 아날로그 클램프 에리어의 수평 방향 양단이 상기 디지탈 클램프 에리어 밖에 위치하도록 상기 아날로그 클램프 에리어를 설정한 것을 특징으로 하는 디지탈 카메라.
  2. 제1항에 있어서, 상기 아날로그 클램프 에리어는 적어도 수평 방향에 대해 상기 디지탈 클램프 에리어를 덮도록 설정되는 것을 특징으로 하는 디지탈 카메라.
  3. 제1항에 있어서, 상기 아날로그 클램프 에리어는 상기 디지탈 클램프 에리어와 다른 에리어에 설정되는 것을 특징으로 하는 디지탈 카메라.
  4. 제1항 또는 제2항에 있어서, 상기 CCD 이미지 생성 장치의 전체 에리어를 이용하는 제1촬영 모드에서는 상기 아날로그 클램프 에리어 및 상기 디지탈 클램프 에리어가 상기 라인 신호의 뒤쪽 가장자리에 설정되는 것을 특징으로 하는 디지탈 카메라.
  5. 제1항 또는 제3항에 있어서, 상기 CCD이미지 생성 장치의 에리어 중 수직 방향 일단 수평 방향 일단을 포함하는 일부의 에리어를 이용하는 제2촬영모드에서는 상기 아날로그 클램프 에리어와 상기 디지탈 클램프 에리어가 상기 수직 방향 일단 및 상기 수평 방향 일단의 각각에 설정되는 것을 특징으로 하는 디지탈 카메라.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970008141A 1996-03-12 1997-03-11 디지탈카메라 KR100411207B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP96-054432 1996-03-12
JP05443296A JP3384673B2 (ja) 1996-03-12 1996-03-12 ディジタルビデオカメラ

Publications (2)

Publication Number Publication Date
KR970068497A true KR970068497A (ko) 1997-10-13
KR100411207B1 KR100411207B1 (ko) 2004-04-29

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Country Status (6)

Country Link
US (2) US6157407A (ko)
EP (1) EP0796008B1 (ko)
JP (1) JP3384673B2 (ko)
KR (1) KR100411207B1 (ko)
CN (1) CN1130900C (ko)
DE (1) DE69704896T2 (ko)

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Also Published As

Publication number Publication date
DE69704896T2 (de) 2002-03-28
EP0796008A2 (en) 1997-09-17
US6157407A (en) 2000-12-05
CN1165450A (zh) 1997-11-19
US6323900B1 (en) 2001-11-27
CN1130900C (zh) 2003-12-10
JP3384673B2 (ja) 2003-03-10
EP0796008B1 (en) 2001-05-23
JPH09247547A (ja) 1997-09-19
KR100411207B1 (ko) 2004-04-29
EP0796008A3 (en) 1997-11-05
DE69704896D1 (de) 2001-06-28

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