ALEXANDRIA, Va., June 4 -- United States Patent no. 12,322,002, issued on June 3, was assigned to Axis AB (Lund, Sweden).
"Signed video data with linked hashes" was invented by Bjorn Volcker (Lund, Sweden) and Stefan Lundberg (Lund, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of signing prediction-coded video data, comprising: obtaining a coded video sequence including at least one I-frame (I), which contains independently decodable image data, and at least one predicted frame (P1, P2, P3, P4), which contains image data decodable by reference to at least one other frame; generating a fingerprint (HI) of each I-frame; generating a fingerprint (HP) of each predicted frame by hashing a combin...