trigger (also 5-volt): A jack on the projector or receiver that acts as an
electronic switch to trigger an event, like lower a screen or raise a platform.
15 Pin D-Sub: Common computer monitor connection.
16:9: Widescreen, or “Letterbox”. Designed to accommodate a large variety of
widescreen content. Native aspect ratio for HD.
Mapping: One pixel on the source tape equals one pixel on your display.
frames per second. Film standard.
frames per second. Interlaced PAL standard.
3:2 Pulldown: 3:2 Pulldown is the process of
transferring film to video. Film is natively shot at 24 frames per second while
video is 30 frames, or 60 fields per second. 3:2 Pulldown, in the simplest
explanation, changes four frames of film to ten frames of video. Although it
may sound simple, this is a complicated process that results in a fairly clean
video format conversion.
frames per second. Interlaced NTSC video standard.
4:3: Typical TV
5.1: 5 speakers and a subwoofer.
6.1: 6 speakers
and a subwoofer.
60FPS: 60 frames per second. Progressive DT standard
7.1: 7 speakers
and a subwoofer.
75 Ohm: Optimal
electrical resistance for video applications.
8 Ohm: Typical
electrical resistance for speakers.
Anamorphic: Generally, this term applies to material created with the highest possible
resolution for an encoded aspect ratio that’s not the intended viewing aspect
ratio – consider: a 16:9 movie burned to DVD for use on a 16:9 display, An
anamorphic burn will stretch the 16:9 to 4:3. The movie is then resized to 16:9
at the display. You’re able to send more picture information than, say, a
standard letterbox, which has black bars at the top and bottom of the picture.
ANSI Lumens: A standardised test for projector luminance developed by the American National
National Standards Institute
Mount: A type of display mount with several pivot points that extends from the
Artifact: An artifact is a part of you
picture that does not look as it should appear. There are many things that can
cause artifacts on a display, too many to get into detail here. Some different
types of artifacts might be a stuck pixel, ghosting problems, motion artifacts, solarization, edge enhancements, as well as much more.
Aspect Ratio: The relationship between vertical and horizontal screen dimensions – 16:9 is 16
units wide for every 9 units tall, for example.
ATSC Antenna: Antenna used to gather off-air HD signals. Not to be confused with the
satellite dish. Routed to ATSC receiver, which displays the signals on an HD
ready video display.
ATSC: Advanced Television Systems
Committee. Governing body for off-air HD standards.
ATTC - The Advanced Television Technology Center is a private, non-profit corporation organized by members of the television broadcasting
and consumer products industries to test and recommend solutions for delivery
and reception of a new U.S. terrestrial transmission system for digital
television (DTV) service, including high definition television (HDTV).
Plug: A type of speaker cable connector.
BNC: A type of
connector named after the inventors: Bayonet Neill-Concelman. Typically used in
professional video applications.
Broadcast Flag - A broadcast flag is a set of
digital bits sent with a TV program to prevent digital copying of the content
on the consumers end. It will not change the way you see a program, but instead
will be hidden to the viewers eye. Broadcast Flags were initially created by
Fox, but soon thereafter adopted as a part of the ATSC standards. The MPAA is
pushing the FCC to implement broadcast flags so they can allow stations to
broadcast their content without the fear of people making their own personal,
C Band - This is a part of the
electromagnetic spectrum that is used for satellite transmission. Uplink
frequency is 6 GHz and downlink frequency is 3 GHz. C Band dishes typically are
very large and costly. C Band is used for voice communications,
videoconferencing, broadcast TV and broadcast radio.
Cable Card: A
credit card like decryption key for QAM encrypted digital cable signals. Does
not support on screen menus, video on demand, or pay per view.
per meter squared. A measure of brightness for video displays.
Center Channel: Center front speaker in a surround sound system.
cable: A type of cable with a central conductor and a secondary conductor
running all the way around the circumference of the cable.
Comb Filter - A comb filter is used to get the
most resolution possible out of digital TV sources such as DVDs and HD signals.
You will only benefit from a comb filter if you are using low quality
transports such as composite video between the devices in your home theater. It
is highly recommended that you use component, DVI or another higher quality
type of cable for connecting the equipment in your home theater as the
resulting picture will be much better!
CB, CR): An interlaced video signal in three parts; red, blue, and luminance. Green is infererred.
PB, PR): A progressive video signal in three parts; red, blue, and luminance.
Green is infererred. Highest standard of analog video.
video signal in two parts – luminance and chrominance, carried through a single
ray tube. Older TV technology typified by a large glass tube.
Cable: Digital content provided by your cable provider using a typical cable
Coaxial: Cable, or interconnect, used for single line transmission of surround
Drive Image Light Amplifier (Hughes/JVC projector technology)
DLP: Digital Light Processing
Dolby: A leader
in sound processing technology. Most often associated with surround sound
DTV: Digital television. Comprised of 480P, 720P and 1080i.
video interface. Used for PC and Digital HD devices (with HDCP)
ED: Enhanced definition 480P.
F-Type: A type of cable connector. Used in typical cable and digital cable
HDTV: High Definition. Always 16:9, and 1280x720P or 1920x1080i.
definition copy protection. Used with DVI and HDMI ports to prevent
unauthorized copying of copy righted materials.
definition multi-media interface. Same video protocol as DVI but adds several
channels of digital audio.
HT Receiver: See also Surround Sound Receiver. Accepts audio and video signals and routes
them to the speakers and monitor.
Interconnect: Fancy word for audio and video cable.
type of video display that shows even numbered pixel rows, then alternates the
odd numbered rows, in 1/60th of a second intervals (30FPS). The two
fields, or half frames, optically combine to form one frame.
ability to correct a projected image that is off center axis from the screen.
Lamp: A light
source for video projectors and projection televisions.
LCD: Liquid crystal display.
video display with optional speakers. Requires an external tuner, like a
digital cable box or satellite receiver.
Television System Committee. Governing standards for SD video.
Ohm: Measure of
Orbiter: Anti-aging technology for plasmas. Waves the pixels slightly and reduces
Alternation Line (European TV format)
PaP: Picture and
PDP: Plasma display panel.
Phone or “Jack” connector: A “plug” type connector used typically with headphones and some microphones.
Phosphor Burn: Ghosting, or image persistence, on a PDP.
PIP: Picture in
Pixel: Individual picture element of a video display.
electrically charged mixture of gasses.
Subwoofer: A low frequency speaker with it’s own amplifier and power source.
Progressive: All pixels rows shown at the same time. Plasmas and LCDs are progressive
displays, as are most computer monitors.
RCA Connector: A type of connector used for most video applications.
RCA: Radio Corporation of America
RG56: Grades of cable used in cable and satellite installations.
RGB: Red, Green
and Blue - Three primary colours used to create all visible colours.
RS-232C: Control interface. Used to access factory settings and controls.
Dish: Satellite signal receiver.
Receiver: Decodes and packages satellite signals for use with a video display.
SD: Standard definition. Typical NTSC broadcast.
SECAM: Séquentiel Couleur Avec Mémoire (French
Color TV Standard)
SMPTE: Society of Motion Picture and Television
vertical support in your wall.
Receiver: See also HT Receiver. Routes signal to the surround sound speakers.
Surround Sound: An envelope of sound created by placing several speaker pairs around the
outside of a space.
video signal in two parts. Similar to composite video, except that the
luminance and chrominance are carried on separate wires.
complete “turn-key” system. Includes a video display, tuner, and speakers.
TFT: Thin film
transistor. Used with LCD displays.
audio cable, not to be confused with fiber optic. Used for single line
transmission of surround sound information.
A 4:3 aspect ratio used primarily for computer monitors. Also used with
rectangular pixels in 42 and 43 inch HD plasma displays.
XLR: Cannon X Series, Latch, Rubber. A
professional grade balanced audio connector.