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nyditot · 09-01-05, 06:34 PM

Ok I didn't read the first post carefully. Whenever you change the physical resolution or DPI you will have to reset the device. This is imposed by the operating system.

This may get a little confusing but I'll do my best to explain:

The X50v only support 480x640 physical resolution but, with NVD, can support 192 or 96 DPI. Now, even though the X50v runs at "VGA resolution" it nominally sets the DPI to 192, twice the typical value of 96. The result is that everything is 4x the "normal" size such that a 480x640 display looks like a very crisp 240x320 display. NVD allows you to change the DPI to 96 thereby achieving a "true VGA" display. Unfortunately the OS gets the DPI once at start up and then uses this saved value later.

On the other hand you can change the virtual resolution without having to reset the device. You could leave the DPI at 192 and create a 960x1280 (or 1280x960 in landscape) virtual display that is compressed to fit within the physical 480x640 display. The screen elements will be exactly the same size as they would be if you used a 480x640 virtual display with a DPI of 96 BUT this will not look exactly the same. In the former case the 1280x960 dislay is being dynamically compressed resulting in some compression artifacts. There will also be some performance degradation.

The good news is that you can go from 1280x960,192 DPI to 640x480,196 DPI without having to soft reset. You can use the VD Previous icon or NVD's popup menu to quickly switch between the two. You might also want to assign VD Previous to a hardware button.

Ok, I hope that wasn't overly confusing. In a nutshell you can not go from standard mode to true VGA and back unless you soft reset but you can get a similar effect, with some caveats, using 1280x960.

Hope that helps.

09-01-05, 06:34 PM	#10 (permalink)
nyditot Aximsite Rookie Join Date: May 2003 Posts: 29 Thanked 0 Times in 0 Posts	Ok I didn't read the first post carefully. Whenever you change the physical resolution or DPI you will have to reset the device. This is imposed by the operating system. This may get a little confusing but I'll do my best to explain: The X50v only support 480x640 physical resolution but, with NVD, can support 192 or 96 DPI. Now, even though the X50v runs at "VGA resolution" it nominally sets the DPI to 192, twice the typical value of 96. The result is that everything is 4x the "normal" size such that a 480x640 display looks like a very crisp 240x320 display. NVD allows you to change the DPI to 96 thereby achieving a "true VGA" display. Unfortunately the OS gets the DPI once at start up and then uses this saved value later. On the other hand you can change the virtual resolution without having to reset the device. You could leave the DPI at 192 and create a 960x1280 (or 1280x960 in landscape) virtual display that is compressed to fit within the physical 480x640 display. The screen elements will be exactly the same size as they would be if you used a 480x640 virtual display with a DPI of 96 BUT this will not look exactly the same. In the former case the 1280x960 dislay is being dynamically compressed resulting in some compression artifacts. There will also be some performance degradation. The good news is that you can go from 1280x960,192 DPI to 640x480,196 DPI without having to soft reset. You can use the VD Previous icon or NVD's popup menu to quickly switch between the two. You might also want to assign VD Previous to a hardware button. Ok, I hope that wasn't overly confusing. In a nutshell you can not go from standard mode to true VGA and back unless you soft reset but you can get a similar effect, with some caveats, using 1280x960. Hope that helps. __________________ Mark Davis Nyditot Support To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. Last edited by nyditot; 09-01-05 at 06:38 PM.