I am designing a simple board in which i want to improve the cable
television quality by givng it the cable tv as a input and then
digtalize it process it so as to get rid of snow or other common
problems those hamper the picture quality and then recreate the analog
signal and over coax cable connect it to TV
Does anybody knows any ICs for such a commercial application?
Kindly inform me as soon as possible also if possible give me a cost
effective solution and third party support requirement if any.

[This followup was posted to sci.electronics.repair and a copy was sent
to the cited author.]

In article . com,
says...

I am designing a simple board in which i want to improve the cable
television quality by givng it the cable tv as a input and then
digtalize it process it so as to get rid of snow or other common
problems those hamper the picture quality and then recreate the analog
signal and over coax cable connect it to TV
Does anybody knows any ICs for such a commercial application?
Kindly inform me as soon as possible also if possible give me a cost
effective solution and third party support requirement if any.

Not really worthwhile. Cable systems are moving to all-digital
transmission (many already have ADS, where analogs are duplicated as
digitals), so noise and snow will soon not be an issue. The problem will
then probably be softness due to overcompression.

The main issue is that most TV's have too much sharpness boosting,
hyper-wide contrast, and other issues that end up exaggerating noise.
Properly adjusting a TV can make a major difference.

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If you have noise in the signal content, there is no way to get rid of
it without cutting back in the resolution. If your cable TV service has
digital service, subscribe to the for digital TV service. They will
supply you a decoder box that you can use to feed your set directly.
This way, the only way you will have noisy pictures, is when they get
noisy feeds to begin with.

--

Jerry G.


wrote in message
ups.com...

I am designing a simple board in which i want to improve the cable
television quality by givng it the cable tv as a input and then
digtalize it process it so as to get rid of snow or other common
problems those hamper the picture quality and then recreate the analog
signal and over coax cable connect it to TV
Does anybody knows any ICs for such a commercial application?
Kindly inform me as soon as possible also if possible give me a cost
effective solution and third party support requirement if any.

Making a silk purse out of a sow's ear?????
There is no magic here. You can reduce apparent snow and noise to the
detriment of real resolution, sharpness and other just as noticable
artifacts.
In order to come up with any "real" and effective noise reduction
without large sacrifices and added artifactrs you would need to "encode
or emphasize" the original signal BEFORE the noise gets added by the
signal path and then "decode or de-emphasize" it AFTER the degradation
of the signal path.... much like dolby does for audio cassettes.
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