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:
Oct. 23, 2007
Filed:
Sep. 19, 2002
Jean-michel Bard, Crolles, FR;
Jean-luc Danger, Antony, FR;
Lucas Hui, Singapore, SG;
Christophe Cunat, Paris, FR;
Jean-Michel Bard, Crolles, FR;
Jean-Luc Danger, Antony, FR;
Lucas Hui, Singapore, SG;
Christophe Cunat, Paris, FR;
STMicroelectronics S.A., Montrouge, FR;
Group des Ecoles des Telecommunications, Paris, FR;
STMicroelectronics Asia Pacific Pte. Ltd., Singapore, SG;
Abstract
Method of compressing a digital image signal in which a first quantization step set, which is unique for a given segment, is determined so that the number of bits needed to encode the quantized data corresponding to this segment is greater than a target value. This first quantization step set then being modified, as a priority, for the blocks of the segment for which the gain, in the course of this modification, on the reduction of the number of bits needed to encode the quantized data corresponding to the segment to which it belongs, is the highest. This modification is carried out, on as many blocks as is necessary for the number of bits of this segment to be less than or equal to the target value. Device to implement this method.