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. 18, 2016
Filed:
Sep. 12, 2012
Frédéric Lefebvre, Rennes, FR;
Séverine Baudry, Rennes, FR;
Antoine Robert, Mezieres sur Couesnon, FR;
Philippe Roudot, Rennes, FR;
Frédéric Lefebvre, Rennes, FR;
Séverine Baudry, Rennes, FR;
Antoine Robert, Mezieres sur Couesnon, FR;
Philippe Roudot, Rennes, FR;
Thomson Licensing, Issy-les-Moulineaux, FR;
Abstract
Selective data encryption of a file, in particular an H.264/MPEG-4 AVC data stream. If a first unit in the data stream is to be encrypted, it is encrypted and the encryption is put into a further unit, preferably in the data stream. A substitution unit is generated and put in the place of the first unit; if necessary, at least one header value is taken from the first unit for use in the substitution unit. A decryptor receives the encrypted data stream, extracts and decrypts the further unit and replaces the substitution unit with a regenerated first unit.