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Chapter 7 Help & Assistance
Chapter 7 Help & Assistance
154
SDTV (Standard Definition Television): A subset of the ATSC’s standard for Digital Television. SDTV refers to
digital video signals that usually provide a picture quality similar to NTSC signals. The advantage of broadcasting
SDTV instead of HDTV, is the ability to broadcast several SDTV programs in the spectrum space that is taken up
by a single HDTV program.
SPDIF: a technical abbreviation for the optical cable you use to connect the DIGITAL AUDIO OUT jack on the
TV to a Dolby Digital receiver that supports optical output.
S-video (separate video): When you connect an S-Video cable to the S-VIDEO jack on the TV and another
component, the color (chrominance) part of the signal is separated from the black and white (luminance) portion
of the signal creating optimum resolution. This is also called Y/C.
Terrestrial: Broadcasts transmitted over the airwaves using powerful transmitters, and received via antennas. Also
called off-air and Over-The-Air (OTA).
V-Chip: The software used to translate ratings attached to broadcasts. A V-Chip system, called Parental Controls
in RCA products, enables owners to block programs based on certain criteria. In order for parental controls to
work, the broadcaster must attach the rating when the signal is sent to your TV and the consumer must set the
ratings limits in the TV’s menu system.
Video Input Channel: Technically, this isn’t channel, but the term is used when explaining that you need to tune
your TV to a specific channel in order to watch content (a videotape, DVD, etc.) that is being played by a
component that is connected to the TV. For example, if your DVD Player is connected to the TV’s INPUT1 jacks
(VIDEO, AUDIO left and right), you won’t be able to watch the movie on the disc that’s playing in the DVD
Player unless you tune the TV to the channel assigned to INPUT1 (in this TV it’s labelled VID1 on the screen).
The Auto Tuning feature eliminates the need to tune manually to the correct channel. The INPUT button on the
remote control tunes the TV to the input channels (keep pressing INPUT to scroll through all of the video input
channels).
Widescreen (also called 16:9): Widescreen refers to the ability of a TV to reproduce the video in the exact format it
was created. This is just an easier way of writing the aspect ratio of High Definition Televisions so it appears in
whole numbers instead of writing 1 x 1.77 (16 divided by 9 = 1.77). The aspect ratio for HDTV. The aspect ratio
is the ratio of the width to the height — a 16:9 television with a width of 48 inches will have height of 27 inches.
Y Pb Pr (also called COMPONENT INPUT): These are the jacks used to provide the ultimate video. Three
separate connectors connect to these jacks and separate the video into three parts. Y is the technical abbreviation
for luminance (also called luma), and P stands for chrominance (also called chrominance). Luminance is the
black and white part of the video signal. Chrominance is the color part of the video signal. P is the technical
abbreviation for chrominance. Pb and Pr are formulas that explain how the color part of the signal is separated
into two parts.