1.1 This standard defines a family of progressive image sample structures for the representation of stationary or moving two-dimensional images sampled temporally at a constant frame rate and having an image format (sample structure) of 3840 × 2160 or 7680 × 4320 which has a hierarchical relationship with 1920 × 1080 and an aspect ratio of 16:9, called ultra high definition television (UHDTV), as ...