Sony HXCU-TX70 Service Manual page 39

Squeeze
The 16 : 9 ratio picture is output in the SD format without changing the ratio.
Letter box (16 : 9)
The 16 : 9 ratio picture is inserted into the 4 : 3 ratio picture without changing the ratio and is output in the SD format.
Semi-letter box (15 : 9)
The picture that is cut out with the aspect ratio of 15 : 9, is inserted into the 4 : 3 ratio picture and is output in the SD format.
Semi-letter box (14 : 9)
The picture that is cut out with the aspect ratio of 14 : 9, is inserted into the 4 : 3 ratio picture and is output in the SD format.
HXCU-TX70
2-9