![]() Correlated color temperature is characterized in color reproduction fields according to the temperature in degrees Kelvin (°K.) of a black body radiator which radiates the same color light as the light in question.For example, a color image which looks normal when viewed in early morning daylight will look bluish and washed out when viewed under overcast midday skies. More particularly, an observer will perceive the same color image differently when viewed under lights having different correlated color temperatures. the correlated color temperature of the viewing light affects the way in which an observer perceives a color image.the invention relates to a method and apparatus for automatically equalizing correlated color temperature of a displayed image and correlated color temperature of viewing light, for example, by adjusting colors in the displayed image and/or by adjusting light sources so as to vary correlated color temperature of viewing light.the present invention relates to adjusting correlated color temperature in accordance with a detection of ambient or projected light.H04N1/6052- Matching two or more picture signal generators or two or more picture reproducers. ![]() H04N1/603- Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer.H04N1/6011- Colour correction or control with simulation on a subsidiary picture reproducer.H04N1/6088- Colour correction or control controlled by factors external to the apparatus by viewing conditions, i.e.H04N1/6083- Colour correction or control controlled by factors external to the apparatus.H04N1/56- Processing of colour picture signals.H04N1/46- Colour picture communication systems.H04N1/00- Scanning, transmission or reproduction of documents or the like, e.g.Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Assignors: CANON INFORMATION SYSTEMS, INC. Assignors: BERETTA, GIORDANO BRUNO Priority to US07/981,437 priority Critical patent/US5532848A/en Priority to DE69333118T priority patent/DE69333118T2/en Priority to DE69319310T priority patent/DE69319310T2/en Priority to EP97200289A priority patent/EP0777378B1/en Priority to EP93308679A priority patent/EP0599495B1/en Priority to JP5295210A priority patent/JPH06213726A/en Priority to US08/636,754 priority patent/US5831686A/en Publication of US5532848A publication Critical patent/US5532848A/en Application granted granted Critical Priority to US09/131,659 priority patent/US6078732A/en Assigned to CANON KABUSHIKI KAISHA reassignment CANON KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). reassignment CANON INFORMATION SYSTEMS, INC. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Canon Information Systems Inc filed Critical Canon Information Systems Inc Assigned to CANON INFORMATION SYSTEMS, INC. Original Assignee Canon Information Systems Inc 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 or warranty as to the accuracy of the list.) Beretta Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US07/981,437 Inventor Giordano B. Google Patents Method and apparatus for adjusting correlated color temperatureĭownload PDF Info Publication number US5532848A US5532848A US07/981,437 US98143792A US5532848A US 5532848 A US5532848 A US 5532848A US 98143792 A US98143792 A US 98143792A US 5532848 A US5532848 A US 5532848A Authority US United States Prior art keywords color color temperature light source light temperature Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5532848A - Method and apparatus for adjusting correlated color temperature US5532848A - Method and apparatus for adjusting correlated color temperature
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