The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2002
Filed:
Aug. 20, 1999
Yoshio Monjo, Myozai-gun, JP;
Daisho Denki Inc., Tokushima, JP;
Abstract
The chroma key system discriminates background and non-background by color difference. Further, the chroma key system changes background color by illuminating the background via background illumination equipment, discriminates the changing background color as background, and thereby discriminates background from non-background. The chroma key system comprises a lighted control circuit operable to control the background illumination equipment so as to provide a color changeable illumination to the background, and a background discriminating and swapping circuit operable to discriminate the subject from the background using information within an image signal based on the color changeable illumination of the background.