CurtPalme.com Home Theater Forum

[Jester]

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I read that a few of guys use an inf file you created for you PJ. I was wonderig how to do this. I run at 1080i. I would prefer to run at 720 p but the screen gets all weird and takes on a trqpazoid shape. Weird huh? Any thoughts or links would be appreciated.

Thanks
Jester

[ecrabb]

Most people create an INF to give access only to certain resolutions and to disallow others. If you can switch to 720p, then it doesn't sound like you need an INF... Rather, it sounds like you need to do a setup at 720p.

When you set up a CRT (meaning geometry and convergence), you really only set it up for that specific resolution - in your case 1080i. But, most projectors have separate memory blocks for a range of frequencies (resolutions). When you switch from 1080i to 720p, the projector is dropping into a different memory block with completely different geometry and convergence settings, hence the weird picture.

What you need to do is first save your good setup to all memory blocks. Run your good setup in 1080i. Go into service man mode like you were going to adjust convergence, and instead of tapping the memory key to save settings, press and hold the memory key... A message will pop up and say "SAVE REGISTRATION DATA TO ALL MEMORY BLOCKS?". Confirm. That will save all your geometry and convergence settings: key, skew, bow, pin, zone, etc. Then, switch to 720p, pull up a test pattern on your HTPC and tweak. Once everything is golden, tap the save, and it will save your tweaks just to the memory block 720p resides in.

Now, why do you want to run 720p? I MUCH preferred 1080i on my 1271/1272.

SC

[ecrabb]

Most people create an INF to give access only to certain resolutions and to disallow others. If you can switch to 720p, then it doesn't sound like you need an INF... Rather, it sounds like you need to do a setup at 720p.

When you set up a CRT (meaning geometry and convergence), you really only set it up for that specific resolution - in your case 1080i. But, most projectors have separate memory blocks for a range of frequencies (resolutions). When you switch from 1080i to 720p, the projector is dropping into a different memory block with completely different geometry and convergence settings, hence the weird picture.

What you need to do is first save your good setup to all memory blocks. Run your good setup in 1080i. Go into service man mode like you were going to adjust convergence, and instead of tapping the memory key to save settings, press and hold the memory key... A message will pop up and say "SAVE REGISTRATION DATA TO ALL MEMORY BLOCKS?". Confirm. That will save all your geometry and convergence settings: key, skew, bow, pin, zone, etc. Then, switch to 720p, pull up a test pattern on your HTPC and tweak. Once everything is golden, tap the save, and it will save your tweaks just to the memory block 720p resides in.

Now, why do you want to run 720p? I MUCH preferred 1080i on my 1271/1272.

SC

[Jester]

Thanks for the great info! Ill put it to use just as soon as I get a day off

As far as 720p I cant read crap on the HTPC at 1080i, 720p is much easier to read( the font and all things are larger)

Any thoughts on how that works .... I mean how do you read stuff @1080i?

Thanks

Jester
Scott

[AnalogRocks]

[AnalogRocks]

[ecrabb]

I was thinking you could also set Windows to make menus and icon text larger... So, you could stay at 1080i all the time, but also have easier-to-read text and such. I guess that wouldn't necessarily help for software dialog boxes and preferences and such. Jeremy's idea of 720p for Windows UI and 1080i for movies is probably best...

You could also use a splitter or dual-head card and a monitor...

SC

[ecrabb]

I was thinking you could also set Windows to make menus and icon text larger... So, you could stay at 1080i all the time, but also have easier-to-read text and such. I guess that wouldn't necessarily help for software dialog boxes and preferences and such. Jeremy's idea of 720p for Windows UI and 1080i for movies is probably best...

You could also use a splitter or dual-head card and a monitor...

SC

[Jester]

Your right about the increase in text size. It woke on most things but on a few cruxcial ones it doesn't.
So let see if I have this straight, since the PJ is setup for 1080i I need to feed it 720p and do setup again? Then save it to a different memory block. So I can then use powerstrip to flip between resolutions for movies and then for music. ( you can't read the mp3 list at 1080i).

As far as asplitter or dual head, I use hdmi out of an ATI 4550. I do this in a vain attempt to get multi channel audio, which is another thread in itself. ( I get windows system sounds but no other sound)


Thanks
Jester
Scott

[AnalogRocks]

Yes run 720P to it and tweak the setup. Do what SC said above though:

[AnalogRocks]

Yes run 720P to it and tweak the setup. Do what SC said above though:

[ecrabb]

Yes, you're right... But, just to clarify... You're first saving your current 1080i setup (while running 1080i) to all memory blocks. That gives you a starting point so you're not doing setup from scratch at the other resolution. Then, you switch to 720p, tweak the setup to optimize geometry and convergence for that resolution (along with RGB SIZE), then save to only that memory block.

Once you've done all that, yes... You just switch back and forth depending on whether you're watching movies (1080i) or whether you need better UI readability (720p). Once you have 720p setup, you could also compare movies at 720p and 1080i, and if you like 720p better or don't see a noticeable difference, just run 720p all the time.

I had acceptable UI readability at 1080i, but then I had a pretty low-hour machine (sharper) that was pretty exceptionally well set up, too.

SC

[ecrabb]

Yes, you're right... But, just to clarify... You're first saving your current 1080i setup (while running 1080i) to all memory blocks. That gives you a starting point so you're not doing setup from scratch at the other resolution. Then, you switch to 720p, tweak the setup to optimize geometry and convergence for that resolution (along with RGB SIZE), then save to only that memory block.

Once you've done all that, yes... You just switch back and forth depending on whether you're watching movies (1080i) or whether you need better UI readability (720p). Once you have 720p setup, you could also compare movies at 720p and 1080i, and if you like 720p better or don't see a noticeable difference, just run 720p all the time.

I had acceptable UI readability at 1080i, but then I had a pretty low-hour machine (sharper) that was pretty exceptionally well set up, too.

SC

[Jester]

I wanna say I got the chance to do the memory block thing today and WOW what a difference, Seems that I didn't have to readjust it after that now, its locks solid onto what ever I throw it. Including the bios/boot screen that is god knows what resolution 640x480? Thanks so much for that little tip! its amazing what a small thing can do some times!


BTW I got multi channel audio goodness setup! WHOO HOO! what a great day. Thanks again guys

Jester

Scott