ALEXANDRIA, Va., March 5 -- United States Patent no. 12,244,820, issued on March 4, was assigned to Apple Inc. (Cupertino, Calif.).

"Adaptive transfer function for video encoding and decoding" was invented by Alexandros Tourapis (Los Gatos, Calif.) and David Singer (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "A video encoding and decoding system that implements an adaptive transfer function method internally within the codec for signal representation. A focus dynamic range representing an effective dynamic range of the human visual system may be dynamically determined for each scene, sequence, frame, or region of input video. The video data may be cropped and quantized into the bit depth of ...