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:
Apr. 26, 2022
Filed:
Oct. 23, 2020
Synamedia Limited, Staines Upon Thames, GB;
Alexander Perkalsky, Jerusalem, IL;
Nadav Angel, Jerusalem, IL;
Eli Baruch, Mevaseret Zion, IL;
Shay Gil, Tel Aviv, IL;
Uri Porat, Modiin, IL;
Max Sorkin, Mevaseret Zion, IL;
Samie Beheydt, Geluwe, BE;
Henk Derudder, Ypres, BE;
Yosef Tsuria, Jerusalem, IL;
Synamedia Limited, Staines Upon, GB;
Abstract
Techniques for media content tamper protection and detection are described. In some embodiments, the protection method is performed at an encoder. The encoder obtains a first sequence of signatures within a group of pictures and a second sequence of signatures for audio frames corresponding to the group of pictures. The encoder then combines the first sequence of signatures and the second sequence of signatures to generate a combined signature, and the combined signature is then embedded in a transport stream for transmission to a client device. In some embodiments, the detection method is performed at a client device, where the client device, in response to detecting a first message in the transport stream, starts calculation of signatures for a group of pictures and corresponding audio frames. The client device then uses the calculated signatures to validate an expected signature for the group of pictures and the corresponding audio frames.