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  #21  
Old March 11th 12, 11:41 AM posted to microsoft.public.win98.gen_discussion
J. P. Gilliver (John)
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Posts: 1,554
Default Monitor cable

In message ,
Lostgallifreyan writes:
"J. P. Gilliver (John)" wrote in
:

I didn't mean vertical cables, I meant you get ringing on the images
where there's a vertical line in the image! (At least, more noticeable.)


Oh. Ok. That difference in each axis might be related to the scan
frequencies, but it might also be illusion. I find that a 1px line looks
sharp horizontally, but blurred vertically. If I lean sideways enough to make
my head horizontal, the acreen's horizontal line looks blurred, and its
vertical one looks sharp. This is true for CRT's and LCD's.


I'm surprised - I suspect the latter is from blood rushing to your - er
- eyes or something!

Ringing and ghosting on vertical lines is familiar to anyone from
analogue TV days: if the TV signal arrived at your aerial by a direct
path and also bouncing off a nearby building or hill, you got the same
feature repeated a few microseconds apart (ghosting - you'd get similar
from reflections at cable joints, shorter duration but we're usually
talking faster scanning so the effect is similar); sharp edges (strong
vertical lines) can also cause damped oscillations in the circuitry
(ringing). Both of these will show as horizontal effects, because the
raster making up the image is scanned horizontally. To get vertical
ghosts/rings, the echo would have to be a lot longer (several line
periods), and while not unknown, it's a lot rarer.

Such signals can contribute to a general fuzziness if the individual
ghosts/rings are not individually distinguishable but mushed together,
but that still tends to manifest as a horizontal effect only.

The effect should be independent of whether it's a CRT or not, though I
have the feeling that it's less noticeable on non-CRT displays, possibly
because of the inherent quantisation (in the time domain) they have.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf

I can live with doubt, and uncertainty, and not knowing. I think it's much
more *interesting* to live not knowing than to have answers which might be
wrong. - Richard Feynman, in 1981 Horizon interview
  #22  
Old March 11th 12, 12:16 PM posted to microsoft.public.win98.gen_discussion
Lostgallifreyan
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Posts: 1,562
Default Monitor cable

"J. P. Gilliver (John)" wrote in
:

Does the rewritten version deliberately have the blank lines in?


I think it deliberately doesn't have them. At least, this time I didn't
see any.
  #23  
Old March 11th 12, 12:27 PM posted to microsoft.public.win98.gen_discussion
Lostgallifreyan
external usenet poster
 
Posts: 1,562
Default Monitor cable

"J. P. Gilliver (John)" wrote in
:

Oh. Ok. That difference in each axis might be related to the scan
frequencies, but it might also be illusion. I find that a 1px line looks
sharp horizontally, but blurred vertically. If I lean sideways enough to
make my head horizontal, the acreen's horizontal line looks blurred, and
its vertical one looks sharp. This is true for CRT's and LCD's.


I'm surprised - I suspect the latter is from blood rushing to your - er
- eyes or something!


Nope. Is real enough, something to do with how we process info by eye. It's
not much harder to pick up the VDU and turn it 90° so I did it to confirm. I
think it may be purely due to our eyes being set apart on horizontal axis and
not vertical.

I understand ghosting (and surface wave propagation vs direct in RF, etc), I
just mention that illusion because when looking for any fine detail that
might differ between axes, this is a useful trick. Anything that survives it
is in the hardware, and not us. I find it important when doing anything at
1px resolution. Digital image magnifiers only work at design time, but to see
the effects of perception on un-zoomed detail, it pays to check it that way.
Small aperture-grille moire patterns and ghosting can't be zoomed anyway..
Not that we need think about aperture grilles much anymore.
  #24  
Old March 11th 12, 12:30 PM posted to microsoft.public.win98.gen_discussion
Lostgallifreyan
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Posts: 1,562
Default Monitor cable

"J. P. Gilliver (John)" wrote in
:

The effect should be independent of whether it's a CRT or not, though I
have the feeling that it's less noticeable on non-CRT displays, possibly
because of the inherent quantisation (in the time domain) they have.


That seems right. I've seen it on an LCD but that was when I was testing a
thin cable, knowing to expect poor quality. It may even help to fool eyes and
brains into not seeing the pixel grid pattern. I don't have that problem
anyway, maybe because I'm too long-sighted now. I get my subtle blurring for
free.
  #25  
Old March 12th 12, 02:48 AM posted to microsoft.public.win98.gen_discussion
Lostgallifreyan
external usenet poster
 
Posts: 1,562
Default Monitor cable

MotoFox confucius-
wrote in
:

I have a hunch the blank lines might have been a result of the weird
way Pan treats line breaks--in other words, I think it was interpreting
the long space areas between the slashes that make up the "X" and the
"Originator of the word 'ENUBULOUS'" bit as line breaks.


I don't. There was nothing there that couldn't be treated as ASCII, and the
bits after the long space all appeared on the same line they should have
whether double-spaced or not.

I read that 'Many web browsers and e-mail clients will interpret ISO-8859-1
control codes as Windows-1252 characters', and wherever any interpretation
like that occurs, there is a chance that each 0D and 0A is independently
interpreted as a Windows newline, 0D0A, so you end up with two. I mentioned
that before, at least once, and you never responded to it. As I say, you used
nothing but chars compatible with ASCII, other than the control codes for
newlines, so look into that. I think your best shot, till you find where it's
being changed, is to make your sig file contain just 0D, or 0A, and see if
either on its own works ok.

You could also deliberately aim one short of standard column width. 71
instead of 72. That way if it's being interpreted as an extra character, you
have another way to accomodate all on one line. Even if something doesn't see
0D0A as 0D0A0D0A, explicitly mishandling newlines, it might still miscount
characters resulting from interpretation and force one too many for standard
width, resulting in an extra newline anyway. I played around with wordwrap on
the borked sigs, in both the view screen and edit reply screens of Xnews,
with no change in the double-space, so it's likely an interpretation made at
source.

(Remember that on things like eBay messages, it's easy to miscount characters
in small limits, because every newline there is counted as two. Similar
things likely apply here, so reduce your reckoning by one char in width, it
might work. There is also an outside chance that something, somewhere, is
including the C string /0 terminator in its count! So you could reduce by
two just to be safe. Your sig would still look good if you did that.).
  #28  
Old March 14th 12, 12:30 AM posted to microsoft.public.win98.gen_discussion
J. P. Gilliver (John)
External Usenet User
 
Posts: 1,554
Default Monitor cable

In message , MotoFox
confucius-say@enlightenment!to!him!lead!it!for!bangpath!foll ow!man!wise.
UUCP writes:
And it came to pass that Lostgallifreyan delivered the following
message unto the people, saying~

(You lost me with all the hex stuff......)

You could also deliberately aim one short of standard column width; 71
instead of 72.


I'll try that. The "standard" wrap width Pan uses is 74 columns,
whereas Thunderbird (probably other Mozilli as well) uses 72.

Hmm. I've never heard of anything using 74 before. I've heard that 72
was chosen to allow four levels of quoting (assuming " ") on 80-column
terminals, though 74 would allow three levels, so is arguably just as
valid, I just haven't heard of it.
--
_ _ ______________ ___________ __

/ \/ \/ __ _ _ __ \/ __ __ \/ /

/ /\/\ /_/ // // /_/ / __// /_/ /\ \

/_/ \____//_/ \______/ \____//_/\_\ !i84w!exit210!304senye!motofox


As other[s?] have pointed out, (a) some of your lines are short (but are
still being doubled), (b) it is only happening to your signature (below
- but, I notice, not including - the "-- " line).
--
J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf

Advertising is legalized lying. - H.G. Wells
 




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