Looking at my new monitor and thinking about how ULMB (strobing backlight to avoid eye tracking blur) and G-Sync (variable frame rate to avoid vsync stutter) can't be used at the same time, I thought "why not?".
They don't do that right now because with a fixed strobe intensity the perceived brightness would change as your framerate changed - it would look like a lightbulb that was about to burn out and you'd feel like your monitor was broken. To compensate for that effect, they could strobe at the same time the frame is displayed (on demand) and vary the strobe intensity frame-by-frame - brighter (longer) if more time had passed since the last frame, dimmer (shorter) if less time had passed, so the total light delivered per second is constant. Of course the hardware would need to be in place to be able to do that.
Having put all that together, I thought "there's no way I'm the first person to think of this", and yup, beaten by a year by Mark Rejhon here:
http://www.blurbusters.com/faq/creating-strobe-backlight/#variablerefresh
He goes into more detail about the options for implementation and offered the idea up for free, just asking for credit if anyone files a patent using the idea.
I thought it would be good to get a thread started for it. Are any manufacturers looking at this yet? It would have obvious benefits for VR headsets, but would work just as well for larger panels.
They don't do that right now because with a fixed strobe intensity the perceived brightness would change as your framerate changed - it would look like a lightbulb that was about to burn out and you'd feel like your monitor was broken. To compensate for that effect, they could strobe at the same time the frame is displayed (on demand) and vary the strobe intensity frame-by-frame - brighter (longer) if more time had passed since the last frame, dimmer (shorter) if less time had passed, so the total light delivered per second is constant. Of course the hardware would need to be in place to be able to do that.
Having put all that together, I thought "there's no way I'm the first person to think of this", and yup, beaten by a year by Mark Rejhon here:
http://www.blurbusters.com/faq/creating-strobe-backlight/#variablerefresh
He goes into more detail about the options for implementation and offered the idea up for free, just asking for credit if anyone files a patent using the idea.
I thought it would be good to get a thread started for it. Are any manufacturers looking at this yet? It would have obvious benefits for VR headsets, but would work just as well for larger panels.
