US Patent 11632575 Binarization of partitioning related to extended quadtree

A method of video processing includes determining, for a conversion between a coded representation of a video block of a video region and the video block, that an extended quadtree (EQT) partition is enabled for at least one video block of the video region, and performing the conversion based on the determining. The EQT partition splits the video block in multiple sub-blocks such that at least one of the multiple sub-blocks has a size that is different from a half width of the video block times a half height of the video block. The coded representation of the video block is represented using a codeword from a table that includes mapping between codewords and partition types.