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Monitors CRT vs LCD
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| survtech |
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Posts: 667
Joined: 21 Mar 2007
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Posted: Fri Jun 27, 2008 3:28 pm
Post subject:
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| millertech wrote: |
| I have been playing with Omnivision for CCTV, pretty nice except for all the stupid licenses. |
That seems to be the standard model for manufacturers in europe. Our DVR system (FAST division of NICE) has the same thing: Ringbuffer licenses, 4CIF licenses, audio licenses, maintenance licenses, transcoder licenses. We're up to our ears in licenses!!!
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| millertech |
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Posts: 14
Joined: 23 Jun 2008
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Posted: Fri Jun 27, 2008 4:18 pm
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Omnivison seems to have nearly a 100 licenses. I don't mind the licenses if I can get a system that is easy to use for the clients sake.
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| survtech |
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Posts: 667
Joined: 21 Mar 2007
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Posted: Mon Jun 30, 2008 12:49 pm
Post subject: Re: Panasonic LCD Monitor
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| ncdoc wrote: |
| We have tested many LCD units and found the Panasonic WV-LD2000A to be the only one that can compete with a tube monitor for qualilty. Around $800.00. |
The only issue I see is that the native resolution is only 640x480. While that is probably the best match for analog and standard resolution IP cameras, it wouldn't do justice to megapixel cameras or on the VGA output of many DVR/NVR stystems.
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| lengfeng203 |
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Posts: 8
Joined: 04 Jul 2008
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Posted: Fri Jul 11, 2008 3:28 am
Post subject: opinion
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it was once pointed out in a text on discussion of this question that LCD monitor, compared with CRT, still existed shortcomings in certain specification fields, such as brightness, contrast, visual angle, response time, lifespan and production, which had limited its promotion. But as the fast development of LCD technology, it was believed that it will develop fast and take up more and more markets of monitor. It was also estimated that the CRT will replaced by LCD in the coming three or five years or even be eliminated in some market totally. While today, as the great development of advanced technology in color, brightness, contrast, visual angle (nearly 180°)and the response time which can let eyes of people be adaptable totally, LCD has tried its best to eliminate its shortcomings. Moreover, with its advantages in thin design, environmental friendly, and energy-saved, it is very possible that the CRT will be replaced by LCD in the near future. In European countries, due to the components with lead in CRT, which is contradictory with the ROHS principle, so the CRT has been regarded as a exception temporarily. But with forbidden one day in the future in some countries or regions..
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| survtech |
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Posts: 667
Joined: 21 Mar 2007
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Posted: Fri Jul 11, 2008 11:01 am
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Are you saying that CRT's will be outlawed by some countries? Why is that? While CRT production does use some chemicals that can be harmful to the environment, the same is also true of LCD and plasma screens:
"Flat screen TVs blamed for accelerating global warming"
A gas used in the making of flat screen televisions, nitrogen trifluoride (NF3), is being blamed for damaging the atmosphere and accelerating global warming.
http://www.abc.net.au/news/stories/2008/07/03/2293369.htm?section=justin
From Wikipedia:
"NF3 is a potent greenhouse gas, with a global warming potential (GWP) 17,200 times greater than that of CO2 when compared over a 100 year period.[5][6] Its GWP would place it second only to SF6 in the group of Kyoto-recognised greenhouse gases, although NF3 is not currently included in that grouping. It has an estimated atmospheric lifetime of 740 years,[5] although recent work suggests a slightly shorter lifetime of 550 years (and a GWP of 16,800)."
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