14 Jun
2007
14 Jun
'07
4:40 p.m.
Has anyone on the list emulated one of the old vector scan displays on a
modern LCD Screen? Did you go through the raster scan logic or interface
directly to the LCD panel electronics? Is anybody working on this idea that
you know of?
It seems like some of the DEC system enthusiasts would be thinking about
this since the original Vector devices are so rare.
I have a belief that this is an idea that a lot of list members have thought
about; but has anyone put the idea into actual hardware?
Billy
14 Jun
14 Jun
4:58 p.m.
Billy Pettit wrote:
I have a belief that this is an idea that a lot of
list members have thought
about; but has anyone put the idea into actual hardware?
Can one still get vector display tubes still?
Anti-aliasing I suspect would be the problem with Vector to raster
displays.
6:44 p.m.
--- woodelf <bfranchuk at jetnet.ab.ca> wrote:
Billy Pettit wrote:
The picture tubes themselves aren't different from the
raster scan monitors. The yokes and deflection
circuits are what's different. I do believe that there
are some aftermarket deflection boards available
intended to repair the abysmal Ampliphone color vector
monitors used in some Atari vector games.
-Ian
I have a belief that this is an idea that a lot
of
list members have thought
about; but has anyone put the idea into actual
hardware?
Can one still get vector display tubes still?
Anti-aliasing I suspect would be the problem with
Vector to raster
displays. 
7:14 p.m.
New subject: Raster Scan (or LCD Panel) Used As Vector Display?
In article <4671D608.9090700 at jetnet.ab.ca>,
woodelf <bfranchuk at jetnet.ab.ca> writes:
Anti-aliasing I suspect would be the problem with
Vector to raster
displays.
The only people that managed to get acceptable quality (to vector tube
users) with a vector to raster conversion was Evans & Sutherland with
their PS390 product. It was their first raster scan graphics
terminal. It was used in Star Trek II: Wrath of Khan, you can see the
output on the bridge in various sequences.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
8:20 p.m.
Hi,
Can one still get vector display tubes still?
Up until a few years ago I used to collect arcade machines too. Vector
monitors weren't exactly scarce, but weren't *that* difficult to come by
either.
"Wells Gardner" (sp?) seem to be the main manufacturer of these, at least
for Atari (and possibly Cinematronics?) machines.
Anti-aliasing I suspect would be the problem with
Vector to
raster displays.
Depends how you do it.
If you were to convert a raster monitor to a vector one by replacing the
drive electronics there would be no problem at all (though it would be a
pretty big job). But I personally wouldn't consider doing it any other way.
Converting an LCD flat panel in this manner though would probably be nigh on
impossible.
TTFN - Pete.
16 Jun
16 Jun
7:08 a.m.
If you were to convert a raster monitor to a vector
one by replacing
the drive electronics there would be no problem at all
Really? I thought vector displays normally use electrostatic
deflection, whereas raster displays normally use magnetic deflection.
(And of course no amount of drive electronics work can add deflection
plates to a tube that doesn't have them.)
/~\ The ASCII der Mouse
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9:23 a.m.
--- der Mouse <mouse at rodents.montreal.qc.ca> wrote:
Most (all?) larger screen vector displays are
magnetically deflected, like the ones in video games,
Vectrex game consoles, etc. Electrostatic tubes are
common in 'scopes though.
-Ian
If you were to
convert a raster monitor to a
vector one by replacing
the drive electronics there would be no problem
at
all
Really? I thought vector displays normally use
electrostatic
deflection, whereas raster displays normally use
magnetic deflection.
(And of course no amount of drive electronics work
can add deflection
plates to a tube that doesn't have them.) 
2:35 p.m.
On Jun 16, 2007, at 10:08 AM, der Mouse wrote:
There's certainly nothing about either raster or vector
methodologies that implies or precludes either type of deflection.
-Dave
--
Dave McGuire
Port Charlotte, FL
If you were to
convert a raster monitor to a vector one by replacing
the drive electronics there would be no problem at all
Really? I thought vector displays normally use electrostatic
deflection, whereas raster displays normally use magnetic deflection.
(And of course no amount of drive electronics work can add deflection
plates to a tube that doesn't have them.)
9:19 p.m.
Really? I
thought vector displays normally use electrostatic
deflection, whereas raster displays normally use magnetic
deflection.
There's certainly nothing about either raster or vector
methodologies
that implies or precludes either type of deflection.
17 Jun
17 Jun
12:49 a.m.
On Jun 17, 2007, at 12:19 AM, der Mouse wrote:
No, not strictly. But when it comes to moving large distances fast,
I'd rather be driving electrostatic than magnetic, partly because the
capacitor formed by deflection plates stores less energy than the
inductor formed by a deflection yoke, partly because I'd rather
have to
generate a current spike than a voltage spike.
Point taken. ;) I was speaking strictly. (something that ALWAYS
gets me in trouble with the missus!)
-Dave
--
Dave McGuire
Port Charlotte, FL
Really? I thought vector displays normally use
electrostatic
deflection, whereas raster displays normally use magnetic
deflection.
There's certainly nothing about either raster or vector
methodologies
that implies or precludes either type of deflection. 
16 Jun
16 Jun
2:47 p.m.
If you were to convert a raster monitor to a
vector one by replacing
the drive electronics there would be no problem at all
Really? I thought vector displays normally use electrostatic
deflection, whereas raster displays normally use magnetic deflection. (And of course no amount of drive electronics work can
add deflection
plates to a tube that doesn't have them.)
-tony
17 Jun
17 Jun
2:09 p.m.
Gettting down to smaller units, the Vectrex was
certainly magnetic. The
HP9100 calcualtor (if that counts) is electrostatic
As far as I know, all arcade machines used magnetic deflection. So they
could use "normal" tubes, only changing the yoke.
Hmm, I have a vectrex :oD
16 Jun
16 Jun
9:41 p.m.
On Saturday 16 June 2007 10:08, der Mouse wrote:
Puttin' em on the outside won't work, eh?
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
If you were to
convert a raster monitor to a vector one by replacing
the drive electronics there would be no problem at all
Really? I thought vector displays normally use electrostatic
deflection, whereas raster displays normally use magnetic deflection.
(And of course no amount of drive electronics work can add deflection
plates to a tube that doesn't have them.)
17 Jun
17 Jun
8:24 a.m.
(And of course
no amount of drive electronics work can add
deflection plates to a tube that doesn't have them.)
Puttin' em on the
outside won't work, eh? from the field in some circumstances, if it
doesn't, that may work.
You'd need substantially higher deflection voltages,
though, to get
sufficiently high field strengths to be useful.
der Mouse
14 Jun
14 Jun
7:16 p.m.
New subject: Raster Scan (or LCD Panel) Used As Vector Display?
In article <5BC121186B788C48A0EE35A16FD0D34D29C683 at wdscexbe01.sc.wdc.com>,
"Billy Pettit" <Billy.Pettit at wdc.com> writes:
Has anyone on the list emulated one of the old vector
scan displays on a
modern LCD Screen?
Nope; it would be non-trivial with an LCD. With a CRT you might have
some hope, but as was already noted you'd have to change the HV
circuits in the tube.
It seems like some of the DEC system enthusiasts would
be thinking about
this since the original Vector devices are so rare.
I think it would be easier to condition the signals for an X-Y display
(i.e. oscilloscope style display).
That's what the HP 1351A vector generator wants anyway.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
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14 comments
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alexandre-listas＠e-secure.com.br -
ard＠p850ug1.demon.co.uk -
bfranchuk＠jetnet.ab.ca -
Billy.Pettit＠wdc.com -
classiccmp＠memory-alpha.org.uk -
ian_primus＠yahoo.com -
legalize＠xmission.com -
mcguire＠neurotica.com -
mouse＠Rodents.Montreal.QC.CA -
rtellason＠verizon.net