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:
Jan. 02, 1996
Filed:
Dec. 06, 1994
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A white balance adjustment apparatus for adjusting red, green and blue video signals of an aiming subject has amplifiers for amplifying the R, G, B video signals, respectively, a brightness detector for detecting the brightness of the subject, and a mode selector for selecting either an outdoor lighting mode or an indoor lighting mode in accordance with the brightness detected by the brightness detector. A white detector is provided for receiving the R, G, B video signals for each pixel and detecting a pixel with R, G, B video signals that falls in a narrow white range when the outdoor lighting mode is selected, and in a wide white range when the indoor lighting mode is selected. An integrator integrates the number of detected pixels in the white range. A white balance gain control controls the gain of the amplifiers based on the integrated result of the integrator.