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:
Jul. 26, 2011
Filed:
Feb. 14, 2008
Ryosuke Namiki, Tokyo, JP;
Akihiro Nagase, Tokyo, JP;
Hideki Yoshii, Tokyo, JP;
Shuichi Kagawa, Tokyo, JP;
Jun Someya, Tokyo, JP;
Hiroaki Sugiura, Tokyo, JP;
Ryosuke Namiki, Tokyo, JP;
Akihiro Nagase, Tokyo, JP;
Hideki Yoshii, Tokyo, JP;
Shuichi Kagawa, Tokyo, JP;
Jun Someya, Tokyo, JP;
Hiroaki Sugiura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A block noise detector has a spatial difference calculator that calculates differences between values of adjacent pixels. A spatial difference comparator detects edges by comparing the calculated differences. Eight counters count edges detected at different groups of positions spaced eight pixels apart in each horizontal line. The maximum count and the group of positions at which it occurs are detected at the end of each horizontal line to detect block noise and the positions of the block boundaries. The block noise detector is small in size because it only has to count edges in one line at a time, and detects edges accurately by comparing the difference at a given position separately with differences to the left and differences to the right.