MM007

Great news! I've been looking for a chip that will cut the frequency in half for videocards that aren't capable of the 15KHz HSync. I believe I have found one, a J-K Flip Flop. By connecting the HSync input to the J input, and hooking the Q to HSync output, you should be able to reduce frequency from 30KHz to 15KHz. I still think powerstrip should be used for centering and stuff, but this could allow all SVGA video cards to work with RGB, instead of the 15KHz ones. I have yet to test the J-K flip-flops at such high frequencies, though. I think they can handle about 15MHz, but I could be wrong.

Rob Withey

Bad news. What you are proposing probably won't work. The color information is still being output on the RGB pins at a 30kHz scan line frequency, so at best you'll end up with 2 side by side images (with the front porch of the second image in the centre of the screen). You'll also still have to deal with an out of range VSync frequency.

Generally these monitors are expecting an interlaced signal, not progressive scan - how do you propose to solve that one?

There is a reason why scan converters are so expensive. It is because the contain a bit more than a flip flop. The need to sample and replay an entire frame generally.

__________________
6yr old first install died 20/8/2005 as result of bad bios flash.

New system : 6x5x2" contains 1GHz C3 PCM9373, ISR based PSU, 8Gb flash DOM, 98Lite, DirectShow based frontend.
GPS : Rikaline 6010.
Display : LTM08C351 + LVDS receiver.

mbkowns

This is what I will do with my RX8 You got to look up (www.extron.com) products on ebay. They have exactly what your looking for.

__________________
2005 Ford Mustang GT <- - - UPDATED PICTURES

2003 KAWASAKI Z1000 - CUSTOM MODZ

MBK (AIM = IllMBKllI)

mbkowns

Also i was thinking about it make sure your using the right size wire. I was just going to buy a BNC cable and snipe the ends and use the right solder to tap into my navigation.

__________________
2005 Ford Mustang GT <- - - UPDATED PICTURES

2003 KAWASAKI Z1000 - CUSTOM MODZ

MBK (AIM = IllMBKllI)

cafn8

Oh, that sounds familiar.

Would you say a different video card is in order for me then? Is this what 30khz scan frequency looks like on a PSone? Haven't had a chance to tinker with this for a while, but it sounds like you're familiar with this condition. Any hints?

BTW, I was following Mpro's directions when I wired it up.

Rob Withey

Different video card that can be adjusted down to 15kHz (best option) or scan converter (poorer quality).

I don't have a PSone LCD, never have, and have never attempted to connect one of these things. My familiarity is based on common sense on how this stuff actually works.


Rob

__________________
6yr old first install died 20/8/2005 as result of bad bios flash.

New system : 6x5x2" contains 1GHz C3 PCM9373, ISR based PSU, 8Gb flash DOM, 98Lite, DirectShow based frontend.
GPS : Rikaline 6010.
Display : LTM08C351 + LVDS receiver.

azcowboy

Try a video card that supports the 15khz frequency and try wiring it to the standards of a VGA adapter.

Rafster

Just thought I would add my .02!

I think that anyone who has gotten this to work and is very comfortable with this, should make more and sell them. I'm sure that dumb people like me that don't even wanna screw with modding a screen, would pay to just have it arrive at their house already modded.

Again, just my .02

Peace,

Rafster

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Post # 3000
Items for Sale

PM me!! Not using new Classifieds because I don't particularly like the way it works...

http://www.speedtest.net/result/133342788.png

mbkowns

You say scan converters aren't good quality but what about this one ?
Extron





thanks

__________________
2005 Ford Mustang GT <- - - UPDATED PICTURES

2003 KAWASAKI Z1000 - CUSTOM MODZ

MBK (AIM = IllMBKllI)

Rob Withey

No I didn't, I said they were "poorer" quality (than a video card running at 15kHz).


Yep, it's a scan converter, it's probably a very nice scan converter. My advice is spend your money on a card that'll do 15kHz instead, you'll probably be happier with the result.

__________________
6yr old first install died 20/8/2005 as result of bad bios flash.

New system : 6x5x2" contains 1GHz C3 PCM9373, ISR based PSU, 8Gb flash DOM, 98Lite, DirectShow based frontend.
GPS : Rikaline 6010.
Display : LTM08C351 + LVDS receiver.

mbkowns

What would be the best card? I plan on doing at least some graphics on this basicly the Visualization mode in winamp. I have the origianal All-In-Wonder Radeon will that do me well?




thanks

__________________
2005 Ford Mustang GT <- - - UPDATED PICTURES

2003 KAWASAKI Z1000 - CUSTOM MODZ

MBK (AIM = IllMBKllI)

MUDD

i have read the whole topic here and am looking at my broken initial portable DVD player and wondering if i could use this for second screen ,just something to play with my mp3s and video files .maybe put it in my entertainment center some day ,just as a cool effect .

i have aready fryed the dvd player part of the player ,
would this work someing like this psone screen .i wanted to put some scans of the parts and connections .but dont know how to post pics

initial DVD portable player with 4 inch lcd screen
12 pin connecter
with 8 pins being used
and it has some small mobo type board on it .
sould that be the controler ?

ive always wanted to use a small screen like this ,but info is hard to find
i need a whats what wire guide .

dsptech

I don't get part of this circuit.
I colored the area in white that doesn't seem to make any sense to me. It seems that nothing is connected to 5 and 6 or the connection to the 78LS86 right next to them. Can someone explain what gets connected there?

Rob Withey

Jumper the middle pin to one of the outside pins. It's there to configure which psone connector pin is used to supply the csync.

__________________
6yr old first install died 20/8/2005 as result of bad bios flash.

New system : 6x5x2" contains 1GHz C3 PCM9373, ISR based PSU, 8Gb flash DOM, 98Lite, DirectShow based frontend.
GPS : Rikaline 6010.
Display : LTM08C351 + LVDS receiver.

dsptech

Ah, makes perfect sense now.
Thanks for the info.