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:
Jun. 23, 2009
Filed:
Feb. 17, 2005
Ryoichi Kawada, Saitama, JP;
Osamu Sugimoto, Saitama, JP;
Atsushi Koike, Saitama, JP;
KDDI Corporation, Tokyo, JP;
Abstract
A picture of 625/50 format is converted to a picture of 525/60 format by a format converter provided halfway of the transmission link (). By thinning scanning lines from the 625/50 format with a scanning line thinning means () on an input side of the transmission link () and then thinning fields from the format of 525/60 with a field (frame) thinning means () on an output side, the formats are matched with each other. After that, a picture quality characteristic amount is extracted by picture quality characteristic amount extracting portions (), () and transmitted to a central monitoring room (). A comparing means () of the central monitoring room () compares received picture quality characteristic amount so as to monitor a transmitted picture quality on a transmission link.