ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,600, issued on Sept. 9, was assigned to AXIS AB (Lund, Sweden).
"Editable signed video data" was invented by Stefan Lundberg (Lund, Sweden) and Bjorn Volcker (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 at most one macroblock in a video frame of the video sequence, and each signature unit includes a digital signature of a bitstring derived from fingerprints of exactly one associated data unit each. The bitstream is edited by: receiving a request to substitute a region; deter...