ALEXANDRIA, Va., June 12 -- United States Patent no. 12,301,816, issued on May 13, was assigned to Microsoft Technology Licensing LLC (Redmond, Wash.).

"Determining chroma quantization parameter using index and quantization parameter of spatially neighboring unit" was invented by Shankar Regunathan (Bellevue, Wash.), Shijun Sun (Redmond, Wash.), Chengjie Tu (Sammamish, Wash.) and Chih-Lung Lin (Redmond, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantizat...