Patent ID: 11902559
Assignee: INTEL CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 7:
8. A system for generation of secure video, the system comprising:
a macroblock selector circuit to select a subset of macroblocks from a video frame to be transmitted;
a frame signature generation circuit to generate a frame signature based on frame data that is associated with the video frame;
an encryption circuit to encrypt the frame signature to generate an encrypted watermark, the encryption based on a private key; and
a macroblock pixel manipulation circuit to modify one or more pixels of ones of the subset of macroblocks based on bits of the encrypted watermark associated respectively with the ones of the subset of macroblocks to generate a secured video frame, the modification to include adjustment of one or more pixels of a first macroblock of the subset of macroblocks by one gray level to cause a least significant bit of an average of the one or more pixels of the first macroblock to correspond to a first bit of the encrypted watermark that is associated with the first macroblock.