CurtPalme.com Home Theater Forum

[CIR Engineering]

I doubt it is the card, but you never know

craigr

[boingo]

Craig

I just tried my old Sanyo big ol projector..it has HD 15 (VGA) and RGB/HV and Component inputs.

The DVD player would not display when Progressive was chosen....I think this is case closed !

As said the projector is about the same spec and DOM as the big ol Sony VPLX2000

One bit of good news...the noise I could see when using the Laptop to play a DVD ...its just its poor graphics card causing the noise ...I tried my spare PC which has a 128 bit 256mb card and its sweet...

One question I have left ...

What refresh rate can I set the graphics card to when using the Sony or and the Sanyo...I did set it to 75 hertz and it looked a lot better..but whats the max rate..anny one know ?

Cheers

And Thanks to those that help for their time

[macgyver655]

[boingo]

Aye... also tried a HD Digital Set Top Box 480p 576p 720p all no show on both Projectors..


Just need to figure at what Hz graphics card refresh rate I can push the Sony...anyone any ideas ? Currently 75Hz not brave enough to go higher

[boingo]

Looking at the brochure again a bit more closely...I believe the Sony VPLX2000 Projector can do up to a 120hz refresh rate.

So just checking Im right or wrong .....

In the spec table there is an entry named fV 50-120Hz and fH 15kHz-94kHz...is the fV value what is known as the refresh rate ?


Almost the last question..... this projector uses the IFB cards does that mean I could use the Sony HDMI Moome Input Card ?
If so this would give me Digital IN and a sharper picture ?
https://www.curtpalme.com/forum_archived/viewtopic.php@t=7563.html

Or a HD Fury ?

TIA

[HaydnG90]

[CIR Engineering]

[boingo]

Thanks CR

This projector displays looks betterer as I increase the refresh rate.
Will push it to 120Hz and see if she smokes out


CR
Please could you explain the D/A/D conversion...I believe you of course..yet I just want to understand more.
I had been thinking there would be no Analogue conversion if using a moome...where/why is this happening ..apologies for the silly question.
Do the Sony CRT Projectors have to do D/A/D as well with a Moome ?


In the end would using a Moome card make the display betterer ?...or the same as an RGBHV input ?..(if RGBHV input.. would be one less process A-->D.. I guess..so would it be betterer)


As before ..thanks heaps again for your time !

[CIR Engineering]

[boingo]

Thanks CR

Its what I figured...feared ! lol

Its a shame but one cant make it betterer than what it is

Thanks again for your time ...much appreciated...very appreciated

[CIR Engineering]

[boingo]

Craig
I will pass you the service manual on the projector. Thanks Again.

Cheers

Ive got it now..with your help thanks !..was all a bit of puzzle but now the pieces are in place
Hope other newbies that read this get some understanding as well

[boingo]

Im about to go off into the never never land..apologies however..I do find this stuff interesting..

So I was thinking...

If you could feed the LCD Panels a Digital signal with the native resolution ONLY...(1024x768) then perhaps a Digital interface (DVI HDMI) is all that would be needed to make this work ?

Am I going crazy probably !

Im assuming the A/D conversion happens inside the projector on an A/D board..so an interface would have to be wired to the Digital In of the A/D conversion Out.

Using a spare Analog board for siwtching/power disable the analog circuit output and instead add a DVI or HDM Interface on it
then hardwire to the Projectors Digital Input.

Is it that simple...probably not right !

I guess that even the DVI or HDMI signal would need to be converted somewhat (different signalling protocols ??) to match the Digital Input that the projector understands.

I guess it could be done...however if it were that easy someone would have already done it...perhaps the guys that made the moome could do it.

[boingo]

Im on a roll...
I wonder if an interface DVI/HDMI board/card could be used from another sony projector (Sony VPL-FX50?) or even the moome...to marry with the Sony LCD Projector Digital Input.

[virusc]

I thought that most of the older LCD units were actually partially analog driven panels with no direct digital path possible?

[boingo]

I think the LCD Panels are still digitally driven..

however the Projector Accepts Analogue inputs only (directly) ..that Im sure of thanks to all and specially Craigr

So any attempt to make a digital input work would be a hack attempt on the projector circuit boards...and that although I believe it could be done with knowledge is for me only a concept....(Of course I would love to make it work !)
I can see the LCD Panel driver chips in the service manual circuit diagrams and the LCD Panel connections..but apart from that...one would need to know about LCD Controllers/Drivers and how they can be interfaced and fed with DVI recieved signal.
That I just dont know..thats not the only problem...you must fool the projector to thinking it has a legitimate analogue signal to function (and get rid of the INPUT notification that stays on the screen if no signal is detected.)

So I think it could be done..but no one has done it..no one will ever likely do it..and its a little bit beyond my understanding...but that does not stop me thinking lol.

[boingo]

Craigr

Thanks again for your help ! Got your email.


Can I ask what VP is good ...for a reasonable price Im thinking this would be a good addition to my equipment in any case.

[CIR Engineering]

I would look at the Lumagen Vision processors for your projector. The VisionHDP is a good choice at between $250 and $500 used. The VisionHDQ is a little better in terms of features and runs between $300 to $800 used.

craigr