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Warp wrote:
> Sending a raw digital signal over a cable doesn't require modulation.
> It can be as simple as "no current = 0", "current = 1".
Except it's impossible to recognise the difference between "current" and
"shouldn't be current but there's minute noise on the line."
In other words, you need some minimum amount of current before you say it's
actually a 1, right?
And if the current you detect is right on the border between what you
consider "zero current" and "one current", then it's not digital. And that
happens every time the current goes between a zero and a one.
Indeed, the whole *reason* for using digital is to make broader swaths of
analog come out to the same value. If you actually *could* transmit digital
signals, you wouldn't *need* to.
--
Darren New, San Diego CA, USA (PST)
The question in today's corporate environment is not
so much "what color is your parachute?" as it is
"what color is your nose?"
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Orchid XP v8 wrote:
> Well, the shops have all this split-screen stuff, with one side in SD
> and the other side in HD. The only difference I can see is that the HD
> is very slightly less blurry. But it's a tiny difference - certainly no
t
> worth paying £20,000 for.
It's kind of hard to know when you're being crazy and when you're just be
ing
dense. :-) I can get an excellent 46" LCD screen for like $1500. What the
heck are you paying £20,000 for?
>> I do like bluray better than hddvd. I'm glad they won.
> ...there's a difference between them?
Stick with analog.
> In reality, we just swapped analogue distortion for compression
> artifacts.
True, but missing the point of what I was sayign.
--
Darren New, San Diego CA, USA (PST)
The question in today's corporate environment is not
so much "what color is your parachute?" as it is
"what color is your nose?"
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On 3/6/2010 10:45 AM, Eero Ahonen wrote:
> Orchid XP v8 wrote:
>>
>> Well, the shops have all this split-screen stuff, with one side in SD
>> and the other side in HD. The only difference I can see is that the HD
>> is very slightly less blurry. But it's a tiny difference - certainly not
>> worth paying £20,000 for.
>
> 20k£? Where do you shop? :O
>
Given what he describes happening with movement.. Some place where the
TV people are being robbed blind by companies selling them bad
compression, and the people delivering it the same. Or.. He has
satellite. lol That is the thing they "don't" tell you with the whole,
"satellites have more bandwidth" BS. First, its basically a lie. I get
the same number of channels + high speed digital internet over my cable,
so.. the idea there isn't bandwidth is just silly. So.. How do they get
that extra "bandwidth" they claim? Simple... they compress the hell out
of the signal, so much so that your HD signals look as bad as my
**better** standard signals look "good". In other words - make up the
space lost by sending you the signal, by sending you 10% less data in
the signal, or what ever it is.
Mind, this is likely no the case with the re-broadcasts, since such
signals still need to be used to transmit to the cable people, but those
are **not** what you get from Direct TV, or the like. You are getting
their version of DSL, while the signal to the cable company is more
like.. T1. The only way to end up with "less" bandwidth is if the cable
company decides to screw you too, with crappy compression, to give
themselves more bandwidth than they need (which I don't doubt happens).
So, yeah.. What your picture looks like is going to vary, even if there
isn't anything wrong with the TV at all. Its all dependent on if the
people sending you the signal figure they can get by with it, or not.
--
void main () {
If Schrödingers_cat is alive or version > 98 {
if version = "Vista" {
call slow_by_half();
call DRM_everything();
}
call functional_code();
}
else
call crash_windows();
}
<A HREF='http://www.daz3d.com/index.php?refid=16130551'>Get 3D Models,
3D Content, and 3D Software at DAZ3D!</A>
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Orchid XP v8 wrote:
> There's a big difference between recognising a DC signal, and
> recognising a sine tone with a specific frequency.
Oh, and yes, recognising the sine tone is far, far easier, if you use analog
components.
--
Darren New, San Diego CA, USA (PST)
The question in today's corporate environment is not
so much "what color is your parachute?" as it is
"what color is your nose?"
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Darren New wrote:
> Orchid XP v8 wrote:
>> There's a big difference between recognising a DC signal, and
>> recognising a sine tone with a specific frequency.
>
> Oh, and yes, recognising the sine tone is far, far easier, if you use
> analog components.
Yep. That's why all digital electronics uses this method internally.
Oh, wait a sec...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Darren New wrote:
> What the heck are you paying £20,000 for?
Nothing. My point is, anything that says "HD" on it - whether it's a TV
or a coffee mat - instantly becomes drastically more expensive than the
"non-HD" version. Which seems silly, given the minimal difference in
quality.
It just puzzles me that if they were going to make everything
incompatible so they could up the resolution, why didn't they up it to
something really high? You know, so you can *see* a difference?
Then again, I suppose you usually sit sort of 12 feet away or something...
>>> I do like bluray better than hddvd. I'm glad they won.
>> ...there's a difference between them?
>
> Stick with analog.
Not an opion, sadly.
>> In reality, we just swapped analogue distortion for compression
>> artifacts.
>
> True, but missing the point of what I was sayign.
...OK...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Orchid XP v8 wrote:
> Darren New wrote:
>> Orchid XP v8 wrote:
>>> There's a big difference between recognising a DC signal, and
>>> recognising a sine tone with a specific frequency.
>>
>> Oh, and yes, recognising the sine tone is far, far easier, if you use
>> analog components.
>
> Yep. That's why all digital electronics uses this method internally.
What part of "if you use analog components" did you miss? Have you ever
tuned a guitar?
--
Darren New, San Diego CA, USA (PST)
The question in today's corporate environment is not
so much "what color is your parachute?" as it is
"what color is your nose?"
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Orchid XP v8 wrote:
>>> In reality, we just swapped analogue distortion for compression
>>> artifacts.
>>
>> True, but missing the point of what I was sayign.
>
> ...OK...
... which was that no, I thought the same as *you* do when *I* only saw them
in stores, but in an actual home environment, the difference is stunning.
And the resolution is already pushing the limits of technology.
--
Darren New, San Diego CA, USA (PST)
The question in today's corporate environment is not
so much "what color is your parachute?" as it is
"what color is your nose?"
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Darren New wrote:
> I thought the same as *you* do when *I* only saw
> them in stores, but in an actual home environment, the difference is
> stunning.
Oh, right. OK. Well if I can GET to the side of the room where the TV
is, maybe I'll try it. ;-)
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Darren New <dne### [at] san rr com> wrote:
> Warp wrote:
> > Sending a raw digital signal over a cable doesn't require modulation.
> > It can be as simple as "no current = 0", "current = 1".
> Except it's impossible to recognise the difference between "current" and
> "shouldn't be current but there's minute noise on the line."
> In other words, you need some minimum amount of current before you say it's
> actually a 1, right?
> And if the current you detect is right on the border between what you
> consider "zero current" and "one current", then it's not digital. And that
> happens every time the current goes between a zero and a one.
> Indeed, the whole *reason* for using digital is to make broader swaths of
> analog come out to the same value. If you actually *could* transmit digital
> signals, you wouldn't *need* to.
I have no idea what that has to do with modulation.
--
- Warp
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