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What is a Plasma
TV?
Plasma TVs are the latest display technology and the best way to achieve
flat panel displays with excellent image quality and large screen sizes
viewable in any environment. Plasma Screen TVs are an array of cells,
known as pixels, which are composed of 3 sub-pixels, corresponding to
the colors red, green and blue.
Gas in a plasma state
is used to react with phosphors in each sub-pixel to produce colored light
(red, green or blue). These phosphors are the same types used in conventional
cathode ray tube (CRT) devices such as televisions and standard computer
monitors. You get the rich, dynamic colors you expect. Each sub pixel
is individually controlled by advanced electronics to produce over 16
million different colors. All of this means that you get perfect merchant/envisiontek
that are easily viewable in a display that is less than 6 inches thick.
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| Step 1:
Address electrode causes gas to change to plasma state. |
Step 2:
Gas in plasma state reacts with phosphors in discharge region. |
Step 3:
Reaction causes each subpixel to produce red, green, and blue light. |
How Does a Plasma
TV Work?
Plasma technology is different from that used in other display systems
in that red, green and blue lights are created in every pixel, reducing
the need for space. Charged electrodes between glass panels cause tiny
pockets of inert gas to change a state of plasma. This process causes
UV light to be produced, which in turn reacts with the red, green, and
blue phosphors in each pixel to produce visible light.
Unlike traditional
displays, where the image is scanned across the screen, in plasma displays
all pixels are "lit" at once. Having no electron beam, back lighting or
light polarization, the image is inherently sharper and brighter. Perfect
from edge to edge.
| CRT VS Plasma |
|
| Cathode Ray
Tube (CRT) |
Plasma Display
Panel (PDP) |
 |
 |
CRT technology:
CRTs use a beam of electrons to stimulate phospors and thus make the
image. The beam strikes the phospor cells at an angle, however, and
this creates a larger spot size. Also, because it is difficult to
focus the beam at all points, the image will be less precise in some
areas. |
Plasma technology:
Each Pixel contains 3 cells, green, red, and a blue. Plasma Display
Panels stimulate phosphor cells individually with electrodes. There
is no loss of focus. |
| CRT RESULTS: |
PLASMA RESULTS: |
Geometric
distortion.
The picture on a CRT will always have a certain amount of distortion. |
No geometric
distortion.
The plasma panel's accurate cell structure produces a picture that
is geometrically perfect. |
Uneven light
output.
The picture on a CRT will have areas that are brighter and areas that
are darker than others. |
Even light
output.
The plasma panel is perfectly evenly illuminated - no dark or hot
spots. |
Difficulty
focusing across the entire screen.
The picture on a CRT will have some regions that are not as focused
as others. |
Perfect focus.
The plasma panel has perfect focus across the entire screen. |
Picture distorted
by magnetic fields.
The CRT's electron beam can be influenced by magnetic fields, which
results is a distorted image. |
No susceptibility
to magnetic fields.
The plasma panel is not affected by magnetic fields. |
Why Buy a Plasma
TV?
There are many reasons why you should buy a plasma screen. Perhaps the
main reasons that we hear from our customers is the saving of space coupled
with contemporary design. Critics agree, plasma TV's are futuristic looking,
sexy, slim (most are less than 3 inches thick), and compelling to watch.
When combining these features with design and extra benefits of receiving
a large bright screen, this is by far one of the best display solutions
on the market today. Plasma TVs create an enhanced display experience
so real that it sometimes appears that you can reach out and touch actors
in a movie, or see straight thru the flat glass screen with x-ray vision.
Once you go plasma, you wont go back to traditional television
EVER!
Who Really Makes
YOUR Plasma TV?
Did you know there are very few Plasma TV manufacturers that actually
make their own plasma TV'? It's true! Most use a system called re-badging
or OEM. Basically they buy from a Original Equipment Manufacturer (OEM),
add some extra feature and then stick there new logo and THERE PRICE on
it and bill you thousands more. Please consider the following:
THE MAJOR MANUFACTURERS
NEC - Nec is a OEM manufacturer, The company's plan is to supply
industrial unit under the NEC name and supply home units thru re-badges
such as Marantz and RCA.
Panasonic - Makes the complete units, Supplies Toshiba, JVC, Fujitsu
and more.
Pioneer - Makes all of there own equipment and sells OEM to Sharp
Note: The 5030 and 4030 HD multimedia box is made by Sharp.
Fujitsu - Only makes their own 42 inch in partnership with Hitachi
. 50 and 61 inch Fujitsu Plasmas are Panasonic and NEC but the 42 inch
are their own. Note Hitachi plasma screens are almost identical to Fujitsu
and cost thousands less.
Sony - Makes their own boards and chips but uses Fujitsu/ Hitachi
plasma screen glass.
Hitachi - Owns 50% of plasma screen factory with Fujitsu. Makes
own internal components.
Philips - Uses Fujitsu/ Hitachi glass screen and most internal
components as well. However, Philips makes its own bezel with built in
speakers.
LG / Zenith - Make their own glass in Korea Zenith is owned by
LG Electronics which OEM's Pioneer 50" units.
Samsung - Makes its own components in Korea
THE SECONDARY MANUFACTURERS
RCA/ Thompson - Partners with NEC to OEM its product. Basically
a NEC with a new bezel.
JVC - 50 inch is Panasonic, 42 is NEC.
Toshiba - OEM from Panasonic.
Sharp - OEM product through Pioneer for 50" and 42 though they
may make some internal component changes .
Runco - OEM 50" from Pioneer and 42" from NEC, Marantz - OEM 42"
plasma monitor from NEC.
Viewsonic - OEM 50" plasma screen from Pioneer ( old 502 ).
Sampo - 42v3 is old Fujitsu, 42v6 is Samsung Plasma.
What is so Great
About Viewing a Flat TV/Surface?
A flat viewing surface is advantageous for several reasons. First, the
image itself is more realistic. With a conventional tube TV the image
is distorted by the curvature of the glass. With Flat TV the image is
not distorted in this manner. Second, the viewing angle is wide. A Flat
TV is viewable from anywhere in the room. Its bright clear picture looks
great straight on or from the side. Finally, the flat surface minimizes
the viewing interference of reflections from room light.
Keep in mind, All
Flat Screens Are Not all the Same! Plasma displays are not the same as
an LCD screen, like those on laptop PC's or the ones that you see on commercial
jetliners. Among other differences, an LCD screen uses backlighting for
its illumination; plasma displays are self-lit, which produces a far brighter
picture. Nor should the "flat panel TV's" you may see in stores be confused
with a plasma display. These flat panel TV's, like plasma displays, do
have a flat screen, so they don't have the edge distortions of a conventional
curved screen. But their use of CRT's gives them the same bulky "behinds"
of regular TV's, and they cannot offer the same practical advantages of
plasma displays.
Is a Plasma TV
a TV Monitor, Computer Monitor or What?
A Plasma Display is a television monitor, capable of displaying high definition
TV, regular TV, and home video. AND it's a computer monitor, capable of
doing everything a regular computer monitor can do. Just bigger and better!
Where are Some
Popular Applications of Plasma Screens?
There are many different applications for Plasma displays. Whether it's
placed in your home or in a business area, your plasma display will provide
an excellent display solution for your needs.
Home Theater -
For your personal use, experience crisp, clear pictures on a flat screen.
Conference Room Settings Display sophisticated business presentations
using a range of digital sources, including laptop computers, VCRs, DVDs
and more.
Retail Locations Advertise flawlessly using plasma displays to
gain attraction and create short-term or long-term multi-media environments
with added appeal.
Terminals a number one choice to present clear text, eye-catching
graphics, and flexible mounting options. Plasma monitors are commonly
used in most terminals around the world.
Classrooms - Plasma displays on powered ceiling lifts make excellent
ceiling monitors in a lecture hall environment.
Versatility Switching Between Data Sources - The beauty of plasma
is its ability to handle full-motion video as well as text-based presentations
with equal clarity. Most displays are designed to take full advantage
of this versatility. You gain total plug-and-play capability from a wide
range of data sources and a second set of side-mounted inputs gives you
an easy way to use your monitor for multiple tasks. If you seek superior
display quality and excellent versatility, then a Plasma display is clearly
the best choice.
Installation Basics
working
with a Tuner/Satellite Box
Plasma monitors do not come with built in tuners. NTSC/ATSC television
signal must be passed through a satellite box, cable box, HDTV receiver,
VCR/VHS device, or an outboard tuning device. Most of these components
offer an RF style cable input or commonly known as a cable connection.
Signals are then passed to the plasma TV using these connections:
Satellite Box
- S-video cable is normally utilized. However if component output is available
it will produce a better over-all picture quality.
Cable Type Box
- Composite RCA to RCA or RCA to BNC connection is used. Some new cable
boxes also have S-video, Component Video Outputs which are popular.
HDTV Decoder Box
- 15 pin VGA to 15 pin VGA cable is normally used though 3 cable component
RCA to component RCA or BNC is also an option.
VCR/VHS/DVD
- RCA to RCA or BNC is normally used though S-video is better option if
available on the VCR. Note: Optional decoders boxes will have a mix
of the above options.
Distance-How Far
Away Should I be?
Pixel distortion or motion artifacts can occur on early generation plasma
monitors when displaying an incoming signal with poor resolution (some
cable channels - a signal of around 250 interlaced is generally poor).
However, this effect known as "pixelating" is lessened by increasing the
viewing distance from the plasma display. Early generation models generally
viewed the proper distances as 8 to 12ft. on a 42" plasma and 12 to 16ft.
or more on a 50". Now, with the many improvements that have been made
to the units, the latest 50" models can be viewed comfortably from 9ft.
So it really becomes a matter of preference. Its fine to some people
to view a 42" plasma from 16ft. away in there home.
Can Plasmas Handle
HDTV?
Yes, all have either component inputs or RGB and will support the HDTV
formats. The higher resolution plasmas will better support the higher
formats; but the advanced scan conversion, (NEC's Scrubland) will make
all formats look excellent. This scan conversion makes it possible to
view XGA computer resolutions with virtually no noticeable degradation.
What is the Life
of a Plasma TV?
Depending upon the model, we are told 30,000 - 40,000 hours before half
brightness. At 10hrs/day that is over 8 yrs. Plasma TVs are ready for
the future. Whether it be DVD, HDTV, Digital TV, or a digital satellite
receiver, the Plasma TV is the perfect display companion. The dramatic,
high-impact picture makes it not only compatible but a very wise choice
of television viewing.
Is a Tuner Built
Into a Plasma?
Most of the time
NO. However, any source, DVD, Satellite, VCR will hook-up
to it through a variety of inputs. The best way is to run all your input
sources into an A/V surround sound receiver, and the monitor output of
the receiver into the plasma. That way your audio is processed in surround
sound and the plasma displays the video source selected at the receiver.
If you are tuning Cable TV a VCR can be used as the tuner or you can use
an HDTV tuner/satellite receiver. Call envisionTek if you would like to
discuss this further.
Audio Considerations
- Do Plasmas Have Speakers?
There is only one plasma TV maker that incorporates built in speakers
into the plasma frame (Philips). Most manufacturers do however offer speakers
as additional options which can be attached to the side of the plasma
TV. Amplification of these speakers comes through built in 7 or 8 watt
amplifiers which are built in to the side of the plasma display (this
is plenty of wattage for excellent audio output). Many users will want
to attach speakers to the amplifiers for watching simple programming such
as the news or displaying the unit in a board room or at a trade show.
There are two options to consider here: 1) The user may purchase flat,
slim speakers which attach to the sides of the plasma monitor, 2) The
viewer may choose to use his or her own bookshelf, or satellite speakers.
Small cube type speakers may also be attractively mounted on the wall
beside the plasma display TV. In addition, home users will often use a
sound system with surround sound or their external amplifier/receiver
component. Some manufacturers of plasma TVs offer no built in amplifiers
for sound. In this instance an outboard amplifier/receiver must be used.
Remember, manufactures make factory speakers that match, and some have
small amps built-in to accommodate. However, you should view this as more
a trade show audio application, certainly not Home Theater as the fidelity
just isn't there. The speakers with your surround system are the way to
go. If you want a wall variety, Acoustic Research has some HiFi speakers
(Phantom) that are made to complement the plasma display. They are about
the thickness of the plasma, similar height and quite nice. Tannoy is
a favorite and has any type and price range your budget can afford, even
their full Pro line made famous in the recording studio and movie industry.
Do Plasmas Have
Wall Mounts?
Yes, either straight or tilt, ceiling mount or tabletop stand. Tall stands
are also available as well as motorized mechanisms to drop it from above
a ceiling or to come up from a cabinet at the end of a bed. These items
are normally sold separately. Call envisionTEK for clarification.
What are the Advantages
of Plasma over Regular or Projection Televisions?
While at a retail store, you'll probably see dozens, even hundreds, of
other displays and TV's, and it may become a little overwhelming. Here
is a quick list of advantages of a Plasma Display over conventional CRT-type
TV's:
- 4" thick, and can
be hung on a wall.
- Much larger picture.
- Higher color accuracy.
- Brighter merchant/envisiontek.
- Better resolution.
- High-definition
capability.
- 16:9 aspect ratio
vs. standard 4:3.
- Can be used as
a monitor for a PC or Mac.
- merchant/envisiontek don't bend
at the edge of the screen.
- Reflections from
windows or lights are minimized.
- Wider viewing
angles.
- Takes up less space
(zero, if wall-mounted).
Advantages Of Plasma
Displays Over Projection Monitors Like plasma displays, the best rear-projection
monitors are great for viewing TV and video. However, a Plasma Display
has certain key advantages over rear-projection monitors:
- Ideal for any room,
even rooms where space may be limited.
- 4" thick, and can
be hung on a wall.
- Can be used as
a monitor for a PC or Mac.
- Higher color accuracy
than most PTV's.
- Brighter merchant/envisiontek
than most PTV's.
- Better resolution
than most PTV's.
- Wider viewing
angles.
Can a Plasma be
Used as a Computer monitor? Absolutely, the inputs are there. The
better plasmas can be used at their native resolution or will scan convert
to 1024 or above. You could watch TV and at a commercial, hit a button
and surf the net.
What Does True
Resolution/Native Resolution Mean
and How Does it Apply? Resolution
is defined by the number rows of horizontal and vertical pixels that create
a picture. Native resolution describes the actual resolution of the plasma
display and not the resolution of the delivery signal. When the delivery
format is higher or lower than the flat screen's native pixel resolution,
the delivery signal will be converted to the plasma's native resolution
through an internal converter. Generally, the closer the incoming picture
signal is to the native pixel resolution on the plasma display monitor
- the better the picture. For example, a VGA computer signal of 853X480
will match up perfectly with a plasma monitor with 853X480 native pixel
resolutions, while an XVGA signal of 1024X768 will match up better with
a plasma monitor that has the higher resolution of 1024X1024. There are
more considerations that deal with the quality of the internal converter/scalar,
and also whether or not the monitor is progressively scanning (853X480)
or interlacing the signal (1024X1024). All 42" inch plasma display monitors
are HDTV ready, while none will show the true HDTV signals of 1080i. However,
they will benefit from the better signal and still show something close.
Native resolution
options include: 1024x1024 1024x768 1280x768 1365x768 640x480 825x480
853x480
Resolution options:
Here are basic choices for native or true resolutions:
VGA, or "640 x
480" This is the lowest data resolution that is currently on the
market.
SVGA, or "800 x
600" This is a popular resolution today, because most notebook computers
are SVGA. Matching the plasma resolution with the computer resolution
will produce good results.
XGA, or "1,024
x 768" - XGA plasma TVs are generally more expensive, and are the
second most popular resolution format. Many of the newest products are
coming out in XGA. They are getting more popular as prices drop and the
use of XGA notebook computers increases.
SXGA, or "1,280
x 1,024" SXGA products are high resolution, and notably more expensive
than XGA. These products are targeted for high end personal computer users
and low end workstation users. They are used primarily for command and
control, engineering and CAD/CAM applications where acute resolution of
small details is important.
UXGA, or "1,600
x 1,200" UXGA is for very high resolution workstation applications
that are detail or information intensive. These are expensive plasma TVs
that support a broad range of computer equipment. Relatively few products
on the market have this native resolution.
Application specifics
for your plasma TV First, you must decide how you want to use the plasma
TV? Perhaps you have a need for very accurate display of small visual
details. If your primary use of the system is for "Powerpoint" style graphics,
pie charts, graphs, and general business presentation products, you dont
need to pay extra for high resolution equipment. SVGA resolution is very
adequate for this kind of work, and makes an excellent solution for the
money.
However, if you are
often presenting materials like Excel spreadsheets that have a lot of
numeric data on the screen, you will probably be happier with XGA resolution.
This format is able to produce a clean, clear, and more legible image
of small numbers and other data.
Finally, if you are
projecting engineering drawings or other merchant/envisiontek of a highly detailed and
technical nature, you will probably need a very high resolution SXGA projector
to produce an acceptable image for your purposes.
As you consider the
question of resolution, keep in mind that the best resolution for your
plasma TV is the resolution of your intended computer application. If
you typically use a notebook computer with SVGA resolution, you will want
a plasma TV with the same native SVGA resolution in order to get the sharpest
and cleanest image. Similarly, if you normally use a computer with XGA
output, you will get the best picture from plasma that has XGA as its
native resolution.
Most of the plasma
TVs on the market today are capable of projecting input signals other
than their native resolutions. For example, you can usually hook up an
XGA computer to SVGA plasma. The plasma TV will automatically convert
the incoming 1,024 x 768 signal to its native 800 x 600 output. However,
there is always a loss of sharpness and detail in the process, so you
will end up with a picture that is not quite as sharp as if the incoming
signal had been the same format as the plasma TVs native resolution.
This loss of sharpness
also happens if you plug an SVGA computer into a higher-resolution XGA
plasma TV. You will usually get a decent image, but the conversion from
the 800 x 600 input to a 1,024 x 768 output will produce some fuzziness
that you may not appreciate after having spending money for an XGA plasma
TV.
Lets sum it up
for you How to properly select the right resolution depends upon the
computer sources you are using, your budget, and your application. Here
are some general guidelines:
Choose a resolution
format for both your computer display and your plasma TV that is adequate
for the type of materials you will be presenting (the smaller and numerous
the details in your presentation materials, the higher the resolution
that is required to display them successfully).
Use a plasma TV that
matches the native resolution of your computer display, so that you can
avoid the image fuzziness that often comes from scaling one input format
to a different output format.
If you are using a
high resolution computer display, and find that plasma with matching resolution
is out of your budget range, select plasma that is one step down in resolution.
However, make sure that the scaled plasma TV image gives you results comparable
to your computer display. By doing this, you can often save a lot of money
and still end up with a very acceptable image on the screen.
And finally, give
some consideration to the useful life or your plasma TV. VGA resolution
was popular for 8 years, SVGA resolution became the most popular resolution
for projectors (similar use to plasma TVs) in 1997, and XGA is expected
to replace SVGA in popularity by the end 1999. If you keep pace with the
changes in the personal computer industry, you know that performance doubles
about every 18 months. Keep this in mind as you make your plasma TV choice.
What Does Scaling
Mean? The plasma TVs process of converting a different input format
to its native output format is called "scaling." Some plasma screen TVs
are very good at scaling, so the resulting image fuzziness is relatively
minor, and the image is very adequate no matter what the source. The quality
of scaling varies widely among plasma TVs and like all technology, it
is constantly being improved. If scaling is an important consideration,
be sure you see it demonstrated as you would use it.
What is Wide Screen
Format and How Does it Affect a Regular TV Broadcast? The wide screen
or 16x9 format is HDTV standard, so they are designed for the future.
16x9 is the way most movies are produced, so you will finally get to see
the entire movie, not a panned and scanned version modified to fit your
screen. If you input a conventional 4x3 picture to it, you have the choice
of viewing it in the 4x3 or various modes which intelligently stretch
the picture to fit. Someday all new broadcast signals will be in 16x9
format.
When Will TV Stations
Start to Broadcast Digital Signals? As of November 1999, digital broadcasts
will have reached the top thirty markets, accounting for roughly 50% of
the U.S. population. By 2003, digital broadcasts will be available in
every market in the country.
Will TV Stations
Stop Broadcasting Regular Signals When They Switch to Digital? No.
Stations are required to broadcast regular TV signals alongside the digital
programming until at least 2006 and probably well beyond.
When Will Digital
TV Sets be Available? Our full line of HDTV products is already available.
It includes Plasma Displays, HD Projectors, set-top decoder boxes and
6-channel home theater audio equipment. - You will need one set-top box
required to view DTV programming.
Will I be Able
to Adapt my Current TV so That it can Receive Digital Broadcasts?
Yes. Our new digital set-top decoder box allows many current televisions
to display digital programs. The resulting picture quality that will rival
DBS or DVD. Conventional televisions will not be able to display full
HDTV resolution quality.
How Will a Digital
Picture Look on my Conventional TV? A DTV picture viewed on your conventional
TV (set-top box required) will be comparable to a picture from a digital
broadcast satellite (DBS) or DVD player. This is an improvement over conventional
broadcast television, because DTV signals can't be degraded by environmental
interference that would otherwise cause "snow" or "ghosting".
Will I Need an
Antenna? Yes. Initially, DTV is available over the air. This means
you will need an antenna to receive it. Outdoor or attic antennas will
be generally more effective than set-top versions. DTV is also available
from your cable and satellite providers.
What's the Difference
between Plasma Vs LCD? What's the difference between a plasma display
and an LCD flat screen, and how do these differences enter into your decision-making
process? Often "plasma" is used as a general term for thin, flat displays
or monitors, but there are some general differences in the technologies,
as listed below. Overall, LCD is great for displays 28-inches and smaller,
and plasma is ideal where 32-inches or larger display is needed. They
are complementary technologies. Please note, we just are starting to see
LCD's that are designed for video/TV use where several of the items below
may be subject to qualification.
|
Plasma |
LCD |
| Viewing
angle |
160
degrees+, typically about 90 degrees vertically |
Up
to 160 degrees horizontally, typically less |
| Size |
32-61
inches |
2-28
inches |
| Lightsource |
Emissive
(internal) |
Transmissive
(External backlight) |
| Switching
speeds |
<20ms
(video rates) |
>20ms
(may have image lag at video rates) |
| Color
technology |
Phosphor
(Natural TV colors) |
Color
Filters (Not the same color system as TV) |
| Ideal
application |
TV,
signage, public display |
PC
data, PC graphics, desktop use |
What's the Difference
Between DTV, HDTV, and SDTV? "DTV" is a general reference to Digital
Television technology. DTV will either be broadcast in HDTV (High Definition
TV)with resolution as high as 1080 scanning lines (interlaced) or 720por
SDTV (Standard Definition TV), with 480 scanning lines (interlaced or
progressive). Broadcasters will most likely broadcast daytime programs
in SDTV while switching to HDTV for prime time movies and specials. For
HDTV formats, Dolby Digital 5.1 channel surround sound is the audio standard
(also known as AC-3)1. This provides 3 discrete audio channels for the
front speakers (left, center, right); 2 channels for the rear surround
sound speakers, and one channel for subwoofer sound. You will need a TV
or an external audio system which is capable of decoding AC-3 to get the
full effect, but any standard stereo system will provide you with good
audio. - One Dolby and Dolby Digital AC-3 are trademarks of Dolby Laboratories
Licensing Corp.
What's the Difference
Between Interlaced & Progressive Scanning? These designations refer
to the method by which the lines of picture information will be scanned
in 1/30th of a second to create the image on your screen. "Interlaced"
means alternate lines scanned in alternate passes, the way conventional
TV sets currently work, while "progressive" represents sequential scanning
of all lines in a single pass, the way computer monitors display their
information (see diagram in our "DTV Benefits" section).
Will all Digital
Programs be Transmitted in the 16:9 Wide-screen Formats? No. All HDTV
and some SDTV programs will be transmitted in the 16:9 wide-screen aspect
ratios (the format of movie theaters). Aspect ratio refers to the width
of a picture relative to its height. Today's conventional TV aspect ratio
is 4:3 DTV broadcasts may also be delivered in the 16:9 format, the same
as many movie theater screens. Todays conventional TV aspect ratio is
4:3. SDTV programming may utilize 16:9 or 4:3. Of course, wide-screen
programs can be viewed on conventional TV screens in the letterbox format
(black areas above and below picture). Likewise, you'll be able to view
regular aspect ratio pictures on a wide aspect TV screen, with the picture
digitally "stretched" to fill the screen, or with gray areas on both sides
of the picture.
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