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For y our r eference
el/P/B
Toefficiently
store v ideo o nDVD, common
elements among frames are used in common, and different elements are recorded with each individual
frame. The frame that contains the common elements is called an I-picture, a complete frame in itself. A P-picture is calculated from past r or P-
pictures. The frame that fills in the spaces between the I-and P-pictures is called the B-picture.
I-pictures have the best picture quality, so they should be used when making picture adjustments.
eFrame
Individual images in a video or on the television are called frames.
oField
Half of the video information
(video signal) in a frame is called a field. With conventional
TV systems, a single frame (a single screen) consists of
two fields.
,=Frame sUfl
The two fields are displayed alternately on the TV screen, so the image may be blurry. However, the image quality is better than field images.
• Field slill
Only one field (half of the video information)
is displayed on the TV screen, so the apparent resolution is low. However, there is no blurring on the
screen.
How different
kinds of software
appear on your television
DVD software is recorded in a variety of picture formats, and how they appear on your TV depends on the software, the kind of TV you have, and the
picture mode your TV is set to.
oLetterbox refers to pictures where black bands appear at the top and bottom.
ePan and scan refers to pictures where part of the picture is cut off so it fills the whole screen.
Televlsfon and
de
Widescteen,
pan and scan
Wideecreen,
non-pan and
scan
Regular (4:3)
Regular (4:3) letterbox
4:3
Edges cut off
',- _
-',
I
i
I
i
,
,,
Letterbox
16:9
full mode
Full screen
16:9
zoom mocle
Top and bottom cut off
t ...........
.
L ...........
J
Full screen
I
Letterbox
Screen stretched
horizontally
Letterbox with screen
stretched horizontally
Top and bottom cut off
, ...........
J
Fullscreen
16:9
auto mode
Fullscreen
Full screen with black
bands at right and left
Letterbox with
extremities of picture
stretched
m
The names given to the television picture modes depends on your television. There may also be slight differences in how the pictures appear on the
screen. Refer to your television's
operating instructions for details.
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