Display where 4 cameras are viewed on the same screen, each camera image occupying a quarter of the display area. Other 'multi-screen' modes are possible such as 9, 16 and 25 way. The splits do not always have to be equal and other configurations can be possible.
QUAD SCREEN
Meaning of QUAD SCREEN in English
Film and video English vocabulary. Английский словарь фильмов и видео. 2012