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:
Sep. 20, 2011
Filed:
Apr. 18, 2007
Kenji Okumichi, Tokyo, JP;
Hirofumi Honda, Chuo, JP;
Kenji Okumichi, Tokyo, JP;
Hirofumi Honda, Chuo, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A block noise removal device classifies interpixel differential values by using a block size N of the decoded video signal. The block noise removal device accumulates the interpixel differential values in the pixels disposed in the nth position. The results of the accumulation provide first to Nth block noise values. A block boundary position signal is produced that represents the pixel position in the pixel group that corresponds with the largest block noise value. The larger of two block noise values of the adjacent pixels on both sides of the pixel having the largest block noise value is taken as the phase error block noise value. A phase error signal is generated on the basis of the ratio between the phase error block noise value and the largest block noise value, block noise removal processing is effected, and the phase correction pixel sample value is obtained.