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. 16, 1998
Filed:
Apr. 24, 1996
Applicant:
Inventor:
Gerrit J Keesman, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
382248 ; 382239 ; 382251 ; 348405 ;
Abstract
The picture quality of an MPEG-encoded video signal is improved considerably by reducing the coefficients after quantization in such a way that the 'Lagrangian cost' D+.lambda.R (D is distortion, R is bitrate) is minimal for a given value of the 'Lagrange multiplier' .lambda.. The distortion decreases because the step size is reduced while the bitrate remains equal.