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:
Feb. 28, 1989
Filed:
Feb. 14, 1986
Applicant:
Inventor:
Antonius H Nillesen, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
36472403 ; 36472417 ; 364745 ;
Abstract
Continued circulation of residual signal values in a recursive first order digital video signal filter, in which a truncation circuit (37) is used for eliminating a portion of the least significant bits in the feedback signal path (31, 37, 43, 11) of the filter, is prevented by adding (19, 47, 51) before the trucation circuit a logic one value to the feedback signal path at the level of the least significant bit of the bits remaining after the truncation circuit. Video signal filters of such a type are frequently used as noise suppression circuits.