XO BW mode (was Re: Guidance sought on collaboration techniques)

Bert Freudenberg bert at freudenbergs.de
Sat Feb 14 05:16:26 EST 2009

On 13.02.2009, at 19:27, Gary C Martin wrote:
> Note the backlight goes through the colour refractive screen magic,
> even in BW mode, so it's not as sharp as with the backlight 100% off

That explanation is horrendously wrong. Please do not perpetuate the  
rumor of "modes" in the display hardware. There are none.

And, there is no "refractive screen magic", that idea did not make it  
into production. The backlight uses regular r/g/b color filters.

The blur you see in color mode is the DCON performing anti-aliasing by  
adding color components from the four neighboring pixels into each  
pixel (e.g., for a red pixel it takes the red components of the  
surrounding pixels into account, etc).

In early DCON drivers it was possible to toggle the anti-aliasing  
independently of the backlight intensity, so you could clearly see its  
effect. IIUC this capability has now been coupled to the backlight  
intensity, which is fine in regular use, but takes away the  
possibility to easily demonstrate what's happening.

- Bert -

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