Uniden HD9000UPVR, Owner'S Manual

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- 40 - © 2010 Uniden Australia Pty Ltd/Uniden New Zealand Ltd.
Glossary
* Aspect Ratio:
It is the ratio of the width of the screen to the height. The two relevant
digital TV formats are 16:9 (wide screen) or 4:3 (the traditional screen
ratio). 16:9 is ergonomically more suitable for human's eye.
* AFD
Abbreviation for “Active Format Descriptor”. A format code which can be
used to send information about the “protected” area inside a widescreen
picture which may be cut off for viewing on non-widescreen TV displays.
Used for Aspect Ratio selections.
* Composite Video:
There are three elements of the video system: First - the "active video"
which means the picture to be displayed on the screen and its
associated colors. Second - the "sync" decides where to place each
pixel on the screen. Third - the "blanking" tells the display when to turn
off the electron beam so no retrace across the screen. These three
elements combined together is called "composite video" when
connecting to a display through connectors.
* DVB:
Abbreviation for "Digital Video Broadcasting". An international
organization created in October 1993, whose primary objective is to
achieve a common framework for all technical platforms of digital
broadcasting systems including DVB-C (cable), DVB-S (satellite),
DVB-T (terrestrial), DVB-MC (MMDS), DVB- CS (SMATV) .
* EPG:
Abbreviation for "Electronic Programme Guide". It is software that
enables viewers to navigate through the large number of channels
offered by digital TV broadcaster and select the desired services.
* Frequency: The property of a signal which is measured in cycles per
second(=Hertz).
* Letterbox: The picture with aspect ratio 16:9 in a 4:3 TV screen with blank
lines on top and bottom. It is the means to watch a wide screen TV
programme on a 4:3 TV screen.
* OSD: Abbreviation of "On Screen Display", used in digital set top box. OSD is
comprised of a main menu and many submenus with lots of options of
functions inside.
* PAL: Stands for "Phase Alternating Line", the European video standard which
has the image format of 4 by 3, 625 horizontal lines, 50 Hz and a total 8
MHz of video channel width.