ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,777,168, issued on Oct. 27, was assigned to Axis AB (Lund, Sweden).
"Editable video data signed on decompressed data" 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 signed video bitstream obtained by prediction coding of a video sequence includes data units and associated signature units, wherein each data unit represents one macroblock in a video frame. Each signature unit includes a digital signature of a bitstring derived from fingerprints, and each fingerprint has been computed from a macroblock reconstructed from one data unit associated with the signature unit. The bi...