This standard defines a family of progressive

image sample systems for the representation of stationary

or moving two-dimensional images sampled tempo-

rally at a constant frame rate and having an image

format of 1280 pixels by 720 lines and an aspect

ratio of 16:9 as given in table 1. All systems in the

table have the common characteristic that all the

samples gathered within a single temporal unit, a frame,

shall be spatially contiguous and provide a complete

descr iption of that frame (4.2) This standard specifies:

- This　standard　defines　a　family　of　progressive

image sample systems for the representation of stationary

or moving two-dimensional images sampled tempo-

rally　at　a　constant　frame　rate　and　having　an　image

format　of 1280　pixels　by　720　lines　and　an　aspect

ratio of 16:9 as given in table 1. All systems in the

table　have　the　common　characteristic　that　all　the

samples gathered within a single temporal unit, a frame,

shall be spatially contiguous and provide a complete

descr iption of that frame (4.2)　This standard specifies: