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102 Cards in this Set

  • Front
  • Back
SPDIF
Sony/Philips Digital Interface Format (carries digital audio signals and supports DD 5.1 output *surround sound*)
coax digital connections
transmits an electric digital signal through a copper wire
elctrical pulses travel on the center conductor
shielded from interference by an aluminum foil wrap
orange is the comon color associated with this type of connector
coax advantage
carries more channels
more rugged
used in complex situations
coax disadvantage
degrade over 50ft
not as slim
more signal loss
optical digital connections
transport light energy modulated by digital audio signals
connectors at either end of the digital optical cable are most commonly Toslink (Toshiba) or EIA-J rectangular connectors
optical advantage
go over long distance
thinner
no interference
optical disadvantage
can't bend
not as rugged
pixel
picture element
what are the two most important standards when assessing a HDTV system
aspect ratio
scan rate
a tv picture is comprised of pixels
about 100,000 pixels are needed to create a good quality picture
SPDIF
Sony/Philips Digital Interface Format (carries digital audio signals and supports DD 5.1 output *surround sound*)
coax digital connections
transmits an electric digital signal through a copper wire
elctrical pulses travel on the center conductor
shielded from interference by an aluminum foil wrap
orange is the comon color associated with this type of connector
coax advantage
carries more channels
more rugged
used in complex situations
coax disadvantage
degrade over 50ft
not as slim
more signal loss
optical digital connections
transport light energy modulated by digital audio signals
connectors at either end of the digital optical cable are most commonly Toslink (Toshiba) or EIA-J rectangular connectors
optical advantage
go over long distance
thinner
no interference
optical disadvantage
can't bend
not as rugged
pixel
picture element
what are the two most important standards when assessing a HDTV system
aspect ratio
scan rate
a tv picture is comprised of pixels
about 100,000 pixels are needed to create a good quality picture
horizontal scan rate
number of horizontal scans per second
vertical scan rate
number of times a set of horizontal lines is scanned in one second
frame
odd lines, even lines, two fields = one frame
what will provide better resolution with more color info
more horizontal lines
which has a higher scan rate
HDTV
interlaced scanning
method of displaying television pictures in which the picture is displayed in two halves
normal standard def
480 horizontal lines that scan across the screen in less than a blink of an eye.
standard def produces
60 fields or 30 frames every second. Slower refresh rate often results in some flickering of the picture, especially with larger screen sizes.
how many field are produced for every complete frame
2`
what is a key benefit of interlaced scanning
conserves bandwidth
progressive scanning
more appealing, encountered with dvd players, displays picture with one signal pass
what types of tv broadcasts would be better using progressive scanning
nascar
sports
flicker
at, or above 60 instances per second
at 30 frames per second a viewer would perceive flicker
which type of scanning reduces flicker
progressive
720p
1080p
what is 4:3 aspect ratio?
movies were projected on a square-ish screen with an aspect ration of 4:3, which means that a screen is four units of measurement wide and 3 units tall
4:3
Academy ratio
16:9
HDTV
Pan and Scan
involves cropping off the sides of an image area to fit 4:3 screens, can cut up to 45% of the total picture area
Letterboxing
displays the widescreen pic at its full width with black bars filling the screen above and below the pic, results in the movie being displayed as intended although some viewers complain about the smaller overall pic and wasted area of the balck bars
pillarboxing
also know as windowpaning, opposite of letterboxing, to preserve the orginal aspect ratio of 4:3
stretch mode
involves stretching the j4:3 programming to fill the entire width of a 16:9 display, results in a somewhat distorted pic with people and objects looking short and fat
smart stretch mode
some tvs feature a smart expand mode, maintains the original apsect ratio for the center portion of the pic, stretching only the edges of the pic to fill the entire widescreen display.
zoom mode
alternative to the stretch mode, enlarges the entire 4:3 pic to fill the entire width of the 16:9 display
postage stamp
refers to an image surrounded by black bars top, bottom, and sides, standard broadcast in letterbox format is received on a widescreen tv, the override setting on a standard tv is turned off
what types of video displays can suffer from burn in
plasma, projection crt
how to you avoid burn in
avoid pillarbox and letterbox
what types of video formats are there
480i (sdtv), 480p (EDTV), 720p, 1080i, 1080p
what are the main technologies to display video?
cathode ray tube (CRT), digital light processing (DLP), liquid crystal display (LCD), liquid crystal on silicone (LCoS), Plasma
what are the four main types of video display
direct view, rear projection, front projection, flat panel
who created DLP
Texas instramment
benefits of DLP tech
swiveling mirrors, small, light weight, no burn in, great for HDTV
what is the component that is the basis for DLP
digital micro mirror display
how is the resolution of the picture determined
number of pixels
the main limitation of CRT direct view is
size, weight
what are the 4 types of tech rptv's use for the video display
CRT, DLP, LCD, LCoS
front projection
80" or larger, fptv remains the best alternative
a fptv is a two piece system
1. projector
2. screen
advantages of flat panel tv
very thin
hang on wall
flat panel plasma tv
displays are available in 32"-61" screen sizes, offer the closest pic quality to that of a crt, expensive, vunerable to burn in
flat panel lcd tv
displays are available in 13"-50", weighs less and uses less energy than the plasma, expensive, have a limited contrast, and black level, not susceptible to burn in
video cable tech
hdmi, dvi, component, s-video, composite video, coax
when coax cable should be used
when no better connection is available
s-video seperates what
luminance and chrominance signals
component video connections
green
y-luminance
red
Pr-chrominance
blue
Pb chrominance
when are component cables necessary to utilize
when using progressive scan ouput
why are some manufacturers bypassing dvi connections
no audio, hdmi supports video/audio input/output
types of dvi connectors
I - transmits either digi to digi or ana to ana signal
A - transmits high res ana to ana signals
D transmits pure digi to digi signals and is used in HD home theaters
what does HDMI stand for
high def multimedia interface
HDMI uses what kind of connector
19 pin, smaller and sleeker
home theater system contains the following components
receiver, set top box, dvd, hdtv, video game console, vcr
unique customer equip
dvd/cd changer, home media rack mounted system, gaming devices, slingbox, scalers, switchers, signal processors
what cables typically connect gaming devices to home theater systems
base band cables
types of remotes
IR, RF, universal, learning, programmable
windows media center
xp pro, vista premium, windows 7
WMC supports what
cable card, remote access, supports 4 tuners, 2 ana, 2 digi
identify customer equipment by
cold booting, having the customer turn on their equip verify equipment is suitable
Position of Seating
Position the main seating approximately two times the diagonal size of a wide screen tv away from the tv
home theater considerations
viewing positions, viewing distances, tv height, lightning, position the speakers
when you install a new comcast device you must
ensure all equipment is in a safe and stable
when you install new connections you must
use the correct cables and connections for each connection
video issues, no pic
wrong display setting fo the tv, components of the system aren't powered on, cables have been plugged into the wrong ports
poor pic
incompatible res, with the tv, slow refresh rate, poor signal
audio issues
not powered on, wrong parts, cable is missing, incorrect cables
dBmV
absolute measurement
dB
delta ratio
ground loop issues
HUM, (2 bars, in house, 1 bar, plant issue), poor ground, typically happens in high end homes
product associated with home theater
dvr, on demand, hdtv
BCTV
public/private
public is available to bars, restaurants, mini mart, gyms
private is available to private offices, lobby environment, business viewing (conference rooms, break rooms)
can't have - retail tv sales, sports stadiums/arenas, charge and admission fee
can a customer get a dvr with their business class tv services
No, copyright laws
BCTV features and services
basic cable, standard cable, digi cable
BCTV basic cable
no frills, and most economical service, includes all local stations, PBS, QVC, Fox and the Weather Channel.
BCTV standard cable
provides business customers with up to 80 entertainment channels featuring sports, movies, dox, kids' programming and more, comcast customers can also watch all their favorite local bradcast and community access channels at no addtional cost
BCTV digi cable
more content and higher pic and sound quality than basic and standard cable, over 150 channels without a dish, includes an easy to use on screen program guide with parental controls, acts as a gateway enabling other exciting digi services like HDTV
BCTV do NOT include what
iPPV, DVR, and On Demand
does comcast carry FM music
NO
BCTV service levels
Basic, info & entertainment, digi basic plus, standard, digi standard, sports and entertainment standard, tv preferred, tv digi deluxe
TV digi preferred and digi deluxe do not include
encore and encore plexes, flix, movieplex, wam!, sundance, indieplex, retroplex, GolTV, NBATV, or other channels that are apart of the sports pack
ala carte services are
additional outlets, additional outlet install, hdtv box, music choice, sports pack, canales selecto, other international packages
The business service customer is responsible for
license fees covering any other uses (ASCAP, BMI, SESAC)
communicating the value of business class tv
flexibility, one provider, effecient, cost effective, peace of mind