Toshiba 43H72 Owner's Manual page 29

Letterbox and Compression modes
The Letterbox and Compression modes display the wide picture
(16:9) with bars at top and bottom. The picture retains its true
proportion.
Letterbox (recommended mode):
• The picture is horizontally stretched, with gray bars at the top
and bottom.
• The picture quality is lower than in the Compression mode
because of a reduction in the scanning lines.
• There is a slightly lower chance of permanently engraining
stationary patterns in the picture tube than in Compression mode
because there is a small amount of raster in the bars at the top
and bottom.
Squeezed signal
Compression:
• The picture is vertically compressed, with black bars at the top
and bottom.
• The exact image is reproduced and the picture quality is better
because of more effective use of scanning lines.
• There is a greater chance of permanently engraining stationary
patterns in the picture tube than in the Letterbox mode, since
there is no raster in the bars at the top and bottom.
Squeezed signal
Zoom
• The picture is enlarged vertically and horizontally to fill the
screen.
• Some of the image on the left and right is lost.
• The chance of permanently engraining stationary patterns in the
picture tube is greatly reduced, since there are no bars at the top
or bottom in Zoom mode.
Wide (16:9) signal
Letterbox mode
Compression mode
Zoom mode
Note:
You can also change the image shape using
the menu system. Select IMAGE SHAPE
HD1 or HD2 in the THEATER menu.
THEATER
SRS 3D ON
I MAGE SHAPE
HD1 NORMAL / LTRBOX COMPRESS ZOOM /
HD2 NORMAL
C I NEMA MODE V I DEO
NOTICE OF POSSIBLE ADVERSE
EFFECTS ON TV PICTURE TUBE
Avoid displaying stationary images on
your TV screen for extended periods
of time. Fixed (non-moving) images
(such as still PIP/POP windows or
black/gray bars in wide-screen picture
or PIP/POP formats) can become
permanently engrained in the picture
tube. This type of damage is NOT
COVERED BY YOUR WARRANTY
because it is the result of misuse. See
item 32 on page 4.
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