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:
May. 23, 2006
Filed:
Dec. 07, 1999
Andrew Augustine Wajs, Haarlem, NL;
Gerard Johan Dekker, Leiderdorp, NL;
Andrew Augustine Wajs, Haarlem, NL;
Gerard Johan Dekker, Leiderdorp, NL;
Irdeto Access B.V., Hoofddorp, NL;
Abstract
A system for processing an information signal comprises a system () for scrambling the information signal and at least one system () for descrambling the scrambled information signal. The scrambling system () comprises means () for analysing the entropy distribution of the information signal, means () for scrambling the information signal in dependence on the entropy distribution of the information signal to provide a scrambled information signal having an entropy distribution corresponding with the entropy distribution of the information signal and means () for compressing the scrambled information signal. The descrambling system () comprises means () for decompressing the compressed scrambled information signal and means () for descrambling the scrambled information signal to provide the information signal.