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. 07, 2000
Filed:
Jun. 13, 1997
Applicant:
Inventor:
Hiroshi Kobayashi, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
386114 ; 386 93 ; 348241 ; 348607 ;
Abstract
A noise component is extracted from an input correlated digital signal, such as a digital video signal in which image information is substantially the same from one frame to the next. The extracted noise is multiplied by a feedback coefficient that varies non-linearly with respect to the value of the extracted noise, this feedback coefficient being switched on a random or pseudo-random basis.