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:
Mar. 19, 1996
Filed:
Dec. 09, 1994
Masaru Uya, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A foreground live-video image, made up of a 'blue back' part, a 'hand/arm' part, and a 'shadow' part of the 'hand/arm' part, is chroma-key composited with a background live-video image. The 'blue back' part is displayed to be transparent on the display screen. The 'hand/arm' part is displayed to be opaque. The 'shadow' part is displayed to be translucent. Whereas a first comparator determines a key color of the 'blue back' part, a second comparator determines a key color of the 'shadow' part. According to the output code of the first and second comparators, a data selector selects, pixel data of the background live-video image (Va) for the 'blue back' part, pixel data of the foreground live-video image (Vb) for the 'hand/arm' part, and pixel data found by multiplying each of the pixel data of Va and the pixel data of Vb by a respective weight and summing those products, as respective output pixel data. The 'hand/arm' part may be displayed to be translucent by changing the output code relating to the 'hand/arm' part by a code converter.