Re: OT Digital TV
- From: Jerry Avins <jya@xxxxxxxx>
- Date: Thu, 03 Jan 2008 17:57:30 -0500
HardySpicer wrote:
On Jan 4, 5:27 am, Jerry Avins <j...@xxxxxxxx> wrote:I was in a "warehouse" store recently where there were a few dozen TV
sets on display, fed in banks from three different canned feeds. All
suffered from ghost images and the ghosts from any one feed seemed
identical. Can there be digital ghosts? If yes, how? Were the ghosts
originally analog, then digitized? If yes, do producers of TV demos
typically do it so sloppily?
Jerry
--
Engineering is the art of making what you want from things you can get.
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Multi-path doesn't care whether you transmit analog or digital. There
are some digital systems that pretend to have fixed the problem but as
you see it is still a major problem. OFDM is supposed to have it fixed
but I hear that isn't true either.
How can you produce a ghost of a number? You can add two analog signals and see the images superposed. Adding two bitstreams should make junk.
Jerry
--
Engineering is the art of making what you want from things you can get.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
.
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