About that IPAD3 / 4 screen and its overclocking ability. The spec sheet I found in the net can be seen at - http://www.panelook.com/LTL097QL01-W01_SAMSUNG_9.7_LCM_overview_17823.html
Now on that page it lists Frequency: 60 Hz with a little green question mark next to it - you can hover your mouse over it and there is some additional stats (and disclaimer about Panelook copyright so I will not post a screenshot of that in here in case its against the forum rules - so go hover the mouse over it to see it) which read as:
120 Hz (60HZ Input): Embedded MEMC Circuit
120Hz + 120 Hz : 120 Hz Panel + 120 Hz Backlight
240 Hz (60HZ InputI): Embedded MEMC Circuit
So the question is what do you make out of it. Is HZ something else than Hertz (usually Hz) or is it just typo? Then there is reference to the Embedded MEMC Circuit which - as I'm not familiar with these things at all reads that tthe panel itself can run happily at 120 or 240 Hz, but that this circuit is willing to take only up to 60 Hz input. What is interesting, however, is the listing about 120 Hz + 120 Hz backlight - now does this mean that I can somehow bypass this MEMC circuit - also, as far as I'm aware the backlight is driven by DC sp I'm not sure which they mean by 120 Hz backlight. Would it perhaps mean that with particularly crafty back-light control I can strobe it at 120 Hz?
BTW I'm not breaking copyright as I typed it all in myself with my very own two fingers (I do have more of them I'm just not that good at typing, ok?)
Anyway - so anyone knows what exactly MEMC is? The Abusemark controller is supposedly programmable if you are into that kind of stuff so ... in theory someone should be able to write a pretty crafty custom firmware for it as the current version is supposed to be half assed (no back-light control from software, just panel starts at 50% intensity and you can toggle between 100% intensity, 50% and off)
There are currently 2 different ways of achieving 240Hz. One way is to simply expand on the MEMC principle and add even more “estimated” frames between the original frames.
- so as far as I understand at first glance it the MEMC is some-kind circuit that takes your input at some lower frequency and then does interpolated frames in between. Am I correct if anyone knows? If true then that would mean that hopefully there would be a possibility of somehow bypassing the embedded circuitry although I would not hold my hopes particularly high in that regard.
Edit2: On the other hand - bypassing the MEMC circuit might be as simple as just hitting the panel with a 120 Hz signal looking at the listed specs as its clear that the panel itself is supposed run physically either at 120 Hz (first two modes) or at 240 Hz (the third mode). When I get mine then will just have to figure out a good way to test at what frequency is it running - how exactly ... well that's a trickier question. I do not have that high speed camera to just flat out film it and see. But I do have a DSLR which can do reasonably short exposure times so hopefully something can be figured out by moving stuff on the screen around and then taking short exposure shots of it and counting the ghosting image trails. Problem is - I have no idea how to differentiate between interpolation and a "true 120 Hz".
Edit3: Interesting screen I noticed - LTL097QL01 - thats 2560x1700 12.85'' screen. Approx ~80$ / unit at first glance and this is supposedly IPS. Link to spec sheet: https://www.revo-sys.com/prodimages/LCD-Display-Panel/LG-12.9-LP129QE1-SPA1-LVDS-2560-1600-400-NITS.pdf
- also eDP but with 40 pin connector instead of the 51 pin one like the IPAD 3/4. That looks even better than the IPAD one if only there is convenient enough way to drive one and the price premium is not that huge.