Quote:
Originally Posted by notimp
Sure.  Do you have more info about regal mode and what it actually does? (Specifics would be great.) |
Is a type of waveform similar to GC16 (slow, good quality) that's supposed to reduce ghosting. I don't know the specifics.
A waveform table contains the specific timmings and voltages used to drive the EPD.
On most e-ink ereaders the main processor is armv7 and runs linux (both embedded distros and android). Main system uses ioctl system calls to talk to a second processor (normally TI MSP 16bit) which is the one that drives the EPD.
Programs on linux (system drivers on android) just request updates to the epd driver. For that they need to specificy a rectangle (x, y, width and height), a mode (full blackToWhite, automatic) and a kind of waveform (DU - fast, A2 - fastest, AUTO - let the driver decide, ...)
What bugs me about the RK3368 platform (which includes all recent Likebooks) is that I'm unable to trigger an update for a specific region of the screen. This makes any epd update all or nothing
IMHO tolinos and nooks are way better in how they handle both battery and epd updates. They're both compliant with intellectual property too
