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8 Glossary
Aspect Ratio
The ratio between the width and height of the TV picture on the screen. An old analog TV has an
aspect ratio of 4 to 3 (4:3). The new aspect ratio for HDTV is 16:9 which is closer to the aspect ratio
in a movie theatre (Widescreen). New TV systems support both 4:3 and 16:9 aspect ratio and can
automatically switch between them.
Audio Video (A/V)
A term often used when discussing a connections on a TV receiver or on video equipment, which has
been especially designed to accept VCR or DVD audio-video signals.
CVBS
Composite Video Baseband Signal. In broadcast television this refers to the video signal, including the
colour information and syncs. This is the yellow connector in an A/V input.
Component Video Input
(Y Pb Pr)
Component Video Input is a type of connection that uses RCA-type connectors to allow set top boxes
or analog DVD players to connect a signal to the TV. By offering the RCA-type input (YPbPr) analog
High Definition signals can be connected from a set top box directly into the TV allowing for the signal
to display on the screen.
HDTV
The generally agreed upon definition of HDTV is approximately twice the vertical and horizontal
picture resolution of the old analog TV, which essentially makes the picture twice as sharp. HDTV
also has a screen ratio of 16:9 as compared with the old TV screens, which have a screen ratio of 4:3.
HDTV offers reduced motion artifacts (i.e. ghosting, dot crawl).
PPV Pay Per View
Resolution
Resolution: A measurement of the finest (smallest) detail that is visible in a video image. TV Resolutions
may be expressed as number of pixels in an image; or more commonly, As Total Number of
(horizontally scanned) Lines used to create the image.
Standard Digital TV Resolutions:
SDTV: 480i –The picture is 720x480 pixels,
480p – The picture is the same 720x480 pixels, but non-interlaced.
HDTV: 720p – The picture is 1280x720 pixels non-interlaced, |
1080i – The picture is 1920x 1080 pixels interlaced.
1080p – The picture is 1920x 1080 pixels non-interlaced.
SPDIF
SPDIF (Sony and Philips Digital Interconnect Format) is the high quality digital audio output from the
TV. Use this to connect the TV sound to a home theater audio system.