| Author |
Message |
Bob Urz
Guest
|
 Posted:
Sat Feb 05, 2005 9:45 pm Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
Sam Goldwasser wrote:
| Quote: | "James Sweet" <jamessweet@hotmail.com> writes:
"NSM" <nowrite@to.me> wrote in message news:YdSMd.3106$pN3.2019@edtnps84...
"Shawn D'Alimonte" <shawnd@mycybernet.net> wrote in message
news:65adnXBoO7xtJZ7fRVn-3w@mycybernet.net...
dkuhajda@locl.net wrote:
Screen burn on these is permanent.
Well, you could display exactly the opposite image until the whole
screen is equally burned :-).
That's probably the ONLY possible 'fix'.
It is, and in the end the screens will be quite well used looking, the
unfortunate problem with plasma screens is they will burn in easily and once
it happens they're essentially junk.
If someone could solve this problem, they would be foolish to post the
solution here before patenting it. Think of the $millions that could be
made refurbing plasma screen TVs!
|
Sure, i got the solution. You buy some of those fake bullet holes that
they sell to stick on cars and put it on the plasma screen over the burn
marks!
There is a solution, but its not cheap. The people with the ideas for
anti burn on the undamaged part of the screen are off base. Why? the
logo or image that is burned was a consistent image. The rest of the
screen probably had moving video that was constantly changing. So how do
you realistically do that?
The solution is like a audio Mix minus. (or in this case a mix plus).
The signal goes into a video processor. The bad pixel areas are mapped
out by address, color and loss of color. The incoming signal sent to
these areas are then boosted to make up for the loss of the phosphor
intensity. Essentially, a look up table which will add signal intensity
to any signal goes into these areas. And compensates by how degraded
each pixel is.
That out to be worth two free monitors! ;)
From the looks of the OP's Email, he is probably a surplus seller
looking to make a fast buck off of these. If these were in a airport or
such with large stationary graphics, there probably a lost cause. This
is NOT a good application for a plasma monitor
Bob
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Sam Goldwasser
Guest
|
| Posted:
Sat Feb 05, 2005 9:45 pm Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
Bob Urz <sound@inetnebr.com> writes:
| Quote: | Sam Goldwasser wrote:
"James Sweet" <jamessweet@hotmail.com> writes:
"NSM" <nowrite@to.me> wrote in message news:YdSMd.3106$pN3.2019@edtnps84...
"Shawn D'Alimonte" <shawnd@mycybernet.net> wrote in message
news:65adnXBoO7xtJZ7fRVn-3w@mycybernet.net...
dkuhajda@locl.net wrote:
Screen burn on these is permanent.
Well, you could display exactly the opposite image until the whole
screen is equally burned :-).
That's probably the ONLY possible 'fix'.
It is, and in the end the screens will be quite well used looking, the
unfortunate problem with plasma screens is they will burn in easily and once
it happens they're essentially junk.
If someone could solve this problem, they would be foolish to post the
solution here before patenting it. Think of the $millions that could be
made refurbing plasma screen TVs!
Sure, i got the solution. You buy some of those fake bullet holes that
they sell to stick on cars and put it on the plasma screen over the
burn marks!
There is a solution, but its not cheap. The people with the ideas for
anti burn on the undamaged part of the screen are off base. Why? the
logo or image that is burned was a consistent image. The rest of the
screen probably had moving video that was constantly changing. So how
do you realistically do that?
The solution is like a audio Mix minus. (or in this case a mix plus).
The signal goes into a video processor. The bad pixel areas are mapped
out by address, color and loss of color. The incoming signal sent to
these areas are then boosted to make up for the loss of the phosphor
intensity. Essentially, a look up table which will add signal intensity
to any signal goes into these areas. And compensates by how degraded
each pixel is.
|
That is the perfect solution. You'd have to provide a fast memory with a gain
constant for RGB at each pixel. But, that's no big deal anymore. If there's
an accessible place to put it in the digital, that would be best. Else, you're
going to have to convert to digital to do the lookup. The mapping could be
determined automatically with a PC-controlled video pattern generator and
photometer.
So, probably about $100,000 of engineering time and equipment and you'll be
all set. How much were you going to charge? :)
The AutoCal option would allow the user to test and adjust periodically.
--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html
Note: These links are hopefully temporary until we can sort out the excessive
traffic on Repairfaq.org.
Important: Anything sent to the email address in the message header above is
ignored unless my full name is included in the subject line. Or, you can
contact me via the Feedback Form in the FAQs. |
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PawlRevere2
Guest
|
| Posted:
Sat Feb 05, 2005 9:45 pm Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
on some plasma models there is a button to flash the screen which reduces the
burn effect, but has the downside of reducing the life of the display by very
slightly dimming it for each use.
please send plasma tv.
|
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Bob Urz
Guest
|
| Posted:
Sat Feb 05, 2005 9:45 pm Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
Jack Zeal wrote:
| Quote: | Gary J. Tait wrote:
On 4 Feb 2005 08:17:29 -0800, jesusn@hitechcafe.com wrote:
We have 50 of these 42" Hitachi Plasma Displays with the same type of
screen burn.
If you have any ideas on how to successfully remove/minimize/fix this
problem, please let us know.
Burn the rest of the screen with an image inverse to the burn, so all
pels have equal burn.
If we receive a successfull suggestion, we will give you one of these
42" plasma screens.
Thanks for your help,
jjnolasco@msn.com
Sell 'em as-is at a relatively low price (USD 1000 or even 800)-- it's
better than throwing them out, and I've seen new 42" plasmas for below
2000.
Do you think people will pay a $1000 Dollars for a Damaged screen with |
TV's as cheap as they are? A hundred or two maybe. You can by a
reasonable big screen for new for $1200 to $1500.
Bob
| Quote: | Perhaps a little tweak to the image control will make the burn less
prominent. I'd think dialing down the brightness might help
|
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James Sweet
Guest
|
| Posted:
Sat Feb 05, 2005 9:45 pm Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
"Bob Urz" <sound@inetnebr.com> wrote in message
news:4204f600$1_2@127.0.0.1...
| Quote: |
Jack Zeal wrote:
Gary J. Tait wrote:
On 4 Feb 2005 08:17:29 -0800, jesusn@hitechcafe.com wrote:
We have 50 of these 42" Hitachi Plasma Displays with the same type of
screen burn.
If you have any ideas on how to successfully remove/minimize/fix this
problem, please let us know.
Burn the rest of the screen with an image inverse to the burn, so all
pels have equal burn.
If we receive a successfull suggestion, we will give you one of these
42" plasma screens.
Thanks for your help,
jjnolasco@msn.com
Sell 'em as-is at a relatively low price (USD 1000 or even 800)-- it's
better than throwing them out, and I've seen new 42" plasmas for below
2000.
Do you think people will pay a $1000 Dollars for a Damaged screen with
TV's as cheap as they are? A hundred or two maybe. You can by a
reasonable big screen for new for $1200 to $1500.
|
Anywhere from $100-$500 is probably about right, depends on the amount of
burn, but even a moderately burned screen may still be fine for playing
video games. |
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|
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BOB URZ
Guest
|
| Posted:
Sat Feb 05, 2005 9:45 pm Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
James Sweet wrote:
| Quote: | "Bob Urz" <sound@inetnebr.com> wrote in message
news:4204f600$1_2@127.0.0.1...
Jack Zeal wrote:
Gary J. Tait wrote:
On 4 Feb 2005 08:17:29 -0800, jesusn@hitechcafe.com wrote:
We have 50 of these 42" Hitachi Plasma Displays with the same type of
screen burn.
If you have any ideas on how to successfully remove/minimize/fix this
problem, please let us know.
Burn the rest of the screen with an image inverse to the burn, so all
pels have equal burn.
If we receive a successfull suggestion, we will give you one of these
42" plasma screens.
Thanks for your help,
jjnolasco@msn.com
Sell 'em as-is at a relatively low price (USD 1000 or even 800)-- it's
better than throwing them out, and I've seen new 42" plasmas for below
2000.
Do you think people will pay a $1000 Dollars for a Damaged screen with
TV's as cheap as they are? A hundred or two maybe. You can by a
reasonable big screen for new for $1200 to $1500.
Anywhere from $100-$500 is probably about right, depends on the amount of
burn, but even a moderately burned screen may still be fine for playing
video games.
|
The problem is highly saturated images like video games are about the worst
thing for a plasma screen. I suppose you can cover one burn with
another........
Bob
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----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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|
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Bob Urz
Guest
|
| Posted:
Sat Feb 05, 2005 9:45 pm Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
Sam Goldwasser wrote:
| Quote: | Bob Urz <sound@inetnebr.com> writes:
Sam Goldwasser wrote:
"James Sweet" <jamessweet@hotmail.com> writes:
"NSM" <nowrite@to.me> wrote in message news:YdSMd.3106$pN3.2019@edtnps84...
"Shawn D'Alimonte" <shawnd@mycybernet.net> wrote in message
news:65adnXBoO7xtJZ7fRVn-3w@mycybernet.net...
dkuhajda@locl.net wrote:
Screen burn on these is permanent.
Well, you could display exactly the opposite image until the whole
screen is equally burned :-).
That's probably the ONLY possible 'fix'.
It is, and in the end the screens will be quite well used looking, the
unfortunate problem with plasma screens is they will burn in easily and once
it happens they're essentially junk.
If someone could solve this problem, they would be foolish to post the
solution here before patenting it. Think of the $millions that could be
made refurbing plasma screen TVs!
Sure, i got the solution. You buy some of those fake bullet holes that
they sell to stick on cars and put it on the plasma screen over the
burn marks!
There is a solution, but its not cheap. The people with the ideas for
anti burn on the undamaged part of the screen are off base. Why? the
logo or image that is burned was a consistent image. The rest of the
screen probably had moving video that was constantly changing. So how
do you realistically do that?
The solution is like a audio Mix minus. (or in this case a mix plus).
The signal goes into a video processor. The bad pixel areas are mapped
out by address, color and loss of color. The incoming signal sent to
these areas are then boosted to make up for the loss of the phosphor
intensity. Essentially, a look up table which will add signal intensity
to any signal goes into these areas. And compensates by how degraded
each pixel is.
That is the perfect solution. You'd have to provide a fast memory with a gain
constant for RGB at each pixel. But, that's no big deal anymore. If there's
an accessible place to put it in the digital, that would be best. Else, you're
going to have to convert to digital to do the lookup. The mapping could be
determined automatically with a PC-controlled video pattern generator and
photometer.
So, probably about $100,000 of engineering time and equipment and you'll be
all set. How much were you going to charge? :)
|
Its a government project, so it will cost a million and sell for $10.
Of course, a game boy now has more computing power than my first S100
CPM computer.
The ideal way is a self map calibrator. the screen will first go through
a sequence of full color red, green, blue, and gray scale on separate
screens. A hi rez color video camera is set to pick up the screen image
with frame capture. The video camera output is then processed to define
the image areas that are not consistent, then the custom processor
creates the pixel map to compensate. Since most burn areas are larger
than pixel size, the camera does not need to resolve down to the pixel
to create the map.
Even the map might not make it 100%, but it will make it much more
viewable. Part of the potential problem is when the phosphor degrades,
it may not be just a linear loss of brightness. It may also have a color
shift in it emitted color temperature. They say this happens in High
output LCD projectors over long use. Purportedly, after 2000 hours of
use or so there can be some degradation's or "Wash out" of color due to
the color filters degrading.
Bob
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NSM
Guest
|
| Posted:
Sun Feb 06, 2005 5:18 am Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
"Sam Goldwasser" <sam@saul.cis.upenn.edu> wrote in message
news:6w7jlnez0g.fsf@saul.cis.upenn.edu...
| Quote: | That is the perfect solution. You'd have to provide a fast memory with a
gain
constant for RGB at each pixel. But, that's no big deal anymore. If
there's
an accessible place to put it in the digital, that would be best. Else,
you're
going to have to convert to digital to do the lookup. The mapping could
be
determined automatically with a PC-controlled video pattern generator and
photometer.
So, probably about $100,000 of engineering time and equipment and you'll
be
all set. How much were you going to charge? :)
|
Add some driver circuitry and sell them to clubs as decorator items - not
for real video, just moving decoration.
--
N |
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James Sweet
Guest
|
| Posted:
Sun Feb 06, 2005 6:37 am Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
"BOB URZ" <"sound(remove)"@inetnebr.com> wrote in message
news:420519AD.E3A12865@inetnebr.com...
| Quote: |
James Sweet wrote:
"Bob Urz" <sound@inetnebr.com> wrote in message
news:4204f600$1_2@127.0.0.1...
Jack Zeal wrote:
Gary J. Tait wrote:
On 4 Feb 2005 08:17:29 -0800, jesusn@hitechcafe.com wrote:
We have 50 of these 42" Hitachi Plasma Displays with the same type
of
screen burn.
If you have any ideas on how to successfully remove/minimize/fix
this
problem, please let us know.
Burn the rest of the screen with an image inverse to the burn, so
all
pels have equal burn.
If we receive a successfull suggestion, we will give you one of
these
42" plasma screens.
Thanks for your help,
jjnolasco@msn.com
Sell 'em as-is at a relatively low price (USD 1000 or even 800)--
it's
better than throwing them out, and I've seen new 42" plasmas for
below
2000.
Do you think people will pay a $1000 Dollars for a Damaged screen with
TV's as cheap as they are? A hundred or two maybe. You can by a
reasonable big screen for new for $1200 to $1500.
Anywhere from $100-$500 is probably about right, depends on the amount
of
burn, but even a moderately burned screen may still be fine for playing
video games.
The problem is highly saturated images like video games are about the
worst
thing for a plasma screen. I suppose you can cover one burn with
another........
Bob
|
If the brightness and contrast are set to something reasonable and the same
game isn't played for hours on end every day it shouldn't be a problem,
besides if they're already burned in a bit more burn isn't the end of the
world. |
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|
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Bob Urz
Guest
|
| Posted:
Sun Feb 06, 2005 7:04 am Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
NSM wrote:
| Quote: | "Sam Goldwasser" <sam@saul.cis.upenn.edu> wrote in message
news:6w7jlnez0g.fsf@saul.cis.upenn.edu...
That is the perfect solution. You'd have to provide a fast memory with a
gain
constant for RGB at each pixel. But, that's no big deal anymore. If
there's
an accessible place to put it in the digital, that would be best. Else,
you're
going to have to convert to digital to do the lookup. The mapping could
be
determined automatically with a PC-controlled video pattern generator and
photometer.
So, probably about $100,000 of engineering time and equipment and you'll
be
all set. How much were you going to charge? :)
Add some driver circuitry and sell them to clubs as decorator items - not
for real video, just moving decoration.
|
Every club needs a plasma screen over the Urinal........
;)
Bob
----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
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----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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Jack Zeal
Guest
|
| Posted:
Sun Feb 06, 2005 8:40 am Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
Bob Urz wrote:
| Quote: |
Jack Zeal wrote:
Gary J. Tait wrote:
On 4 Feb 2005 08:17:29 -0800, jesusn@hitechcafe.com wrote:
We have 50 of these 42" Hitachi Plasma Displays with the same type of
screen burn.
If you have any ideas on how to successfully remove/minimize/fix this
problem, please let us know.
Burn the rest of the screen with an image inverse to the burn, so all
pels have equal burn.
If we receive a successfull suggestion, we will give you one of these
42" plasma screens.
Thanks for your help,
jjnolasco@msn.com
Sell 'em as-is at a relatively low price (USD 1000 or even 800)-- it's
better than throwing them out, and I've seen new 42" plasmas for below
2000.
Do you think people will pay a $1000 Dollars for a Damaged screen with
TV's as cheap as they are? A hundred or two maybe. You can by a
reasonable big screen for new for $1200 to $1500.
|
It depends on where and how you market it. For some reason, despite all
the reliability and heat concerns, people drool for plasma. Even with
an imperfect display, there's probably a few people who would pay 800
for a status-symbol display. Hell, call it a benefit: it makes the
daft network logo in the corner of the screen look bad! |
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NSM
Guest
|
| Posted:
Sun Feb 06, 2005 8:40 am Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
"Bob Urz" <sound@inetnebr.com> wrote in message
news:42056db7$1_2@127.0.0.1...
| Quote: | Every club needs a plasma screen over the Urinal........
|
Screen burns would be the least of your problems there!
--
N |
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Ken G.
Guest
|
| Posted:
Sun Feb 06, 2005 10:50 am Post subject:
Re: Free 42" Plasma Screen if help remove/minimize screen bu |
|
|
Its easy .. you simply buy a 42``canvas sign and tape it over the screen
and never power on the monitor . Guaranteed to work every time. |
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