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:
Sep. 23, 2003
Filed:
Jun. 11, 2001
Maurice Jerome Justin Jean-Baptiste Maes, Eindhoven, NL;
Geert Florimond Gerard Depovere, Eindhoven, NL;
Antonius Adrianus Cornelis Maria Kalker, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a method and a system ( ) for embedding extra information in an input signal ( ). Groups of one or more candidate frames in the input signal ( ) are associated with respective portions of the extra information. Each group is edited in dependence on its associated respective portion, for example by deleting it to represent a zero bit in the respective portion and duplicating it to represent a one. The invention further relates to a method and system ( ) for decoding extra information embedded in an input signal ( ) by comparing it with an original input signal ( ) and decoding the differences into the extra information. For example, missing groups of candidate frames are decoded into a zero bit, and duplicated candidate frames are decoded into a one bit.