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. 06, 2004
Filed:
Nov. 20, 2000
Applicant:
Inventor:
Oliver Hartwig Werner, Laatzen, DE;
Assignee:
British Broadcasting Corporation, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/12 ;
U.S. Cl.
CPC ...
H04N 7/12 ;
Abstract
In digital video, 3:4 down conversion and 4:3 down conversion are transparently cascaded. The up conversion filter is: S (n)=&Sgr;S (k).g(3n−4k) and the down conversion filter is: S (n)=&Sgr;S (k).h(4n−3k). The pair of up and down conversion filters are designed so that &Sgr;h(4n−3k).g(3k−4m) is equal to unity if n=m and is otherwise equal to zero.