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:
Nov. 11, 2008
Filed:
Oct. 24, 2005
Kazunobu Takahashi, Tokyo, JP;
Sumito Yoshikawa, Kanagawa, JP;
Kazunobu Takahashi, Tokyo, JP;
Sumito Yoshikawa, Kanagawa, JP;
Eastman Kodak Company, Rochester, NY (US);
Abstract
To provide an auto white balance apparatus capable of performing stable white balance adjustment. A parent block is divided into child blocks by a block-dividing circuitand a typical value is calculated every child block by a typical-value calculating circuitand then the distance between the typical color difference component of each parent block and the typical color difference component of each child block is obtained on a color difference plane. A child block satisfying a condition equal to or less than a threshold value S is selected to recalculate reliability of a parent blocks by using only selected child blocks. Moreover, a white balance evaluating circuitcorrects reliabilities of parent blocks in accordance with the number of unselected child blocks.