ES2091784T3 - Circuito de regulacion del equilibrio del blanco para automaticamente ajustar el equilibrio del blanco en respuesta a señales de informacion de luminancia y de señales de informacion de color procedentes de un captador de imagen. - Google Patents

Circuito de regulacion del equilibrio del blanco para automaticamente ajustar el equilibrio del blanco en respuesta a señales de informacion de luminancia y de señales de informacion de color procedentes de un captador de imagen.

Info

Publication number
ES2091784T3
ES2091784T3 ES90121976T ES90121976T ES2091784T3 ES 2091784 T3 ES2091784 T3 ES 2091784T3 ES 90121976 T ES90121976 T ES 90121976T ES 90121976 T ES90121976 T ES 90121976T ES 2091784 T3 ES2091784 T3 ES 2091784T3
Authority
ES
Spain
Prior art keywords
white balance
response
automatically adjust
regulation circuit
sub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES90121976T
Other languages
English (en)
Inventor
Toshinobu Haruki
Kenichi Kikuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1337352A external-priority patent/JP2532956B2/ja
Priority claimed from JP2047915A external-priority patent/JP2523036B2/ja
Priority claimed from JP2058652A external-priority patent/JP2532962B2/ja
Priority claimed from JP2080102A external-priority patent/JPH0828878B2/ja
Priority claimed from JP2090902A external-priority patent/JPH0828879B2/ja
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Application granted granted Critical
Publication of ES2091784T3 publication Critical patent/ES2091784T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
    • 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
    • H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

SE DETERMINAN 64 REGIONES EN UNA IMAGEN DETECTADA EN LA PELICULA DE UNA CAMARA DE VIDEO, DONDE SE OBTIENEN LOS VALORES DE EVALUACION R SUB IJ, B SUB IJ Y Y SUB IJ EVALUANDO LAS SEÑALES R-Y Y B-Y DE DIFERENCIA DE COLOR Y LA SEÑAL DE LUMINANCIA Y OBTENIDA DE UNA IMAGEN QUE REFLEJA UNA SEÑAL DE DETECCION DURANTE MAS DE UN PERIODO DE CAMPO PARA CADA REGION. CUANDO SE DETERMINA QUE LA DIFERENCIA EN LOS VALORES DE EVALUACION ENTRE DOS REGIONES CONTINUAS NO EXCEDE DE UN VALOR PREDETERMINADO SEGUN LOS VALORES DE EVALUACION OBTENIDOS, ESTO ES, CUANDO SE HA DETERMINADO QUE LAS REGIONES CONTINUAS TIENEN EL MISMO COLOR, LA CANTIDAD PONDERADA DE LOS VALORES DE EVALUACION DEL COLOR DE UNA REGION CORRESPONDIENTE SE REDUCE PRODUCIENDO SEÑALES DE CONTROL DE GANANCIA TENIENDO EN CUENTA LAS SEÑALES DE DIFERENCIA DE COLOR. COMO RESULTADO, EL EFECTO DE LOS OBJETOS DEL MISMO COLOR HACIA EL AJUSTE DEL EQUILIBRIO DEL BLANCO SE REDUCE.
ES90121976T 1989-11-17 1990-11-16 Circuito de regulacion del equilibrio del blanco para automaticamente ajustar el equilibrio del blanco en respuesta a señales de informacion de luminancia y de señales de informacion de color procedentes de un captador de imagen. Expired - Lifetime ES2091784T3 (es)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP30023989 1989-11-17
JP1337352A JP2532956B2 (ja) 1989-12-26 1989-12-26 カラ―ビデオカメラ
JP2047915A JP2523036B2 (ja) 1990-02-28 1990-02-28 カラ―ビデオカメラ
JP2058652A JP2532962B2 (ja) 1990-03-09 1990-03-09 カラ―ビデオカメラ
JP2080102A JPH0828878B2 (ja) 1989-11-17 1990-03-28 白バランス調整装置
JP2090902A JPH0828879B2 (ja) 1990-04-05 1990-04-05 白バランス調整装置

Publications (1)

Publication Number Publication Date
ES2091784T3 true ES2091784T3 (es) 1996-11-16

Family

ID=27550294

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90121976T Expired - Lifetime ES2091784T3 (es) 1989-11-17 1990-11-16 Circuito de regulacion del equilibrio del blanco para automaticamente ajustar el equilibrio del blanco en respuesta a señales de informacion de luminancia y de señales de informacion de color procedentes de un captador de imagen.

Country Status (6)

Country Link
US (3) US5442408A (es)
EP (3) EP0708569B1 (es)
KR (1) KR100196305B1 (es)
CA (1) CA2030142C (es)
DE (3) DE69027751T2 (es)
ES (1) ES2091784T3 (es)

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Also Published As

Publication number Publication date
DE69033743T2 (de) 2002-02-07
EP0708569B1 (en) 2001-05-30
EP0433672A2 (en) 1991-06-26
EP0711082A3 (en) 1998-07-08
DE69033744D1 (de) 2001-07-05
US5555022A (en) 1996-09-10
CA2030142A1 (en) 1991-05-18
EP0711082B1 (en) 2001-05-30
US5442408A (en) 1995-08-15
EP0708569A3 (en) 1998-07-08
CA2030142C (en) 1999-02-23
DE69033743D1 (de) 2001-07-05
KR100196305B1 (ko) 1999-06-15
EP0433672B1 (en) 1996-07-10
DE69033744T2 (de) 2002-02-28
KR910011059A (ko) 1991-06-29
EP0433672A3 (en) 1992-07-08
DE69027751D1 (de) 1996-08-14
DE69027751T2 (de) 1997-03-06
US5489939A (en) 1996-02-06
EP0708569A2 (en) 1996-04-24
EP0711082A2 (en) 1996-05-08

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