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NEC HT1000 and screen size of 16:9 with 4:3 source

621 Views 3 Replies 4 Participants Last post by Defiler, Nov 21, 2002

mrad

Discussion Starter · Nov 20, 2002

I have read the NEC HT1000 User's Guide and was wondering if some lucky owner

could answer a question for me re: resolutions.

The HT1000 can be set to have a screen size of 4:3 or 16:9. Check!

The HT1000 has a DMD chip with 1024x768. Check!

If Screen Size = 4:3, then ...

Source Resolution

4:3 1024 x 768 (fills entire screen)

16:9 1024 x 576 (black bars at top/bottom)

I.e. when displaying 16:9 it just doesn't use some of the scan lines (96 at top and 96 at bottom)

In reality, nothing changes here ... the HT1000 is basically set up as a 1024 x 768 image and uses as many pixels as it can.

If Screen Size = 16:9, then

Source Resolution

16:9 1024 x 576 (fills entire screen)

4:3 1024 x 768? 768 x 576 ? (black bars on left/right)

I.e. When displaying 4:3 on a 16:9 screen does the HT1000 just simply use the same # of scan lines and turn off pixels on the left/right (like in the 4:3 screen case), or does it magically change the number of scan lines on the 16:9 screen?

I was leaning towards the HT1000 displaying 4:3 on a 16:9 screen by using only 768 x 576 pixels (i.e. maintaining the same basic 1024 x 576 image and just turning off the pixels it doesn't need), but I wanted to check with an owner first.

If it DOES display 4:3 on a 16:9 screen as 768 x 576, then would this be an argument for going with a 4:3 screen instead of a 16:9 screen?

My head hurts!

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Guy Kuo

· #2 · Nov 20, 2002

There is also the possibility of not needing to choose between a 4:3 or 16:9 screen. It is perfectly possible to get a 4:3 screen and vertically mask it so it is ALSO a 16:9 screen. Basically, you can have your cake and eat it too.

One could also use an anamorphic lens to map the entire 4:3 surface of the DLP onto a 16:9 screen and gain some resolution for widescreen material.

Look around the forum some more and keep asking your questions. There are lots of people who can help.

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Jon Eivind Lygren

· #3 · Nov 21, 2002

I have also wondered about this! I am about to get my new HT1000, and have actually ordered a 16:9 screen. I would guess it actually is a somewhat weird resolution, and that the solution will be to zoom out and shift to 4:3 resolution to get the entire 1024x768 panel in use. I do, however, hope NEC has provided some solution to this issue, but I doubt it, as it seem rather difficult to sort out the logics on how they have solved this issue...

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Defiler

· #4 · Nov 21, 2002

Surely they intend you to use a 4:3 screen with this 4:3 projector.

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