121–130 of 138 posts
Earlier quoted context omitted.
You can measure samples of the waveform, but the tricky part is how the waveform changes with temperature and aging of the e-ink panel to produce minimal ghosting under all conditions.
That's a good machine learning problem. Point a camera at the thing as you change conditions and the waveform and let hill-climbing do the tuning for you.
Ben Krasnow (Applied Science on YouTube) did some research into driving e-Ink displays, and he made some similar observations: > All of the lookup table information has been removed from this datasheet, because the industry thrives on secrecy or something Highly recommended, as usual for him it's a great video/write-up: * https://www.youtube.com/watch?v=MsbiO8EAsGw * http://benkrasnow.blogspot.com/2017/10/fast-partia…
One thing that I want to note is that while their documentation might be closely guarded secret, the actual waveforms are actually available out in the open.
For instance here are the raw waveforms for one of the latest Carta generation e-paper panel:
https://github.com/canselcik/libremarkable/blob/master/refer...
~ hexdump -C epdc_ES103CS1.fw | head -10
00000000 34 88 c4 7c 01 2d 01 00 dd 09 00 00 07 06 a4 00 |4..|.-..........|
00000010 03 58 21 1d 3c ca 01 85 02 00 00 00 40 00 00 fe |.X!........|
00000050 cb 06 00 00 00 00 00 c8 8d 0a 00 00 00 00 00 a8 |................|
00000060 4f 0e 00 00 00 00 00 98 00 00 00 00 00 00 00 a0 |O...............|
00000070 65 00 00 00 00 00 00 a8 bc 00 00 00 00 00 00 b0 |e...............|
00000080 0b 01 00 00 00 00 00 b8 5a 01 00 00 00 00 00 c0 |........Z.......|
00000090 aa 01 00 00 00 00 00 c8 31 02 00 00 00 00 00 d0 |........1.......|Earlier quoted context omitted.
That wouldn't work outside in bright light, and would send bad blue light though. Been waiting for an e-ink laptop specifically for working with it outside in the sunlight, and in the evening, since blue light is supposed to be really bad for humans at night.
Me too...E-Ink/Clear Ink/Mirasol whatever I don't care...just something reflective and not an LED backlight shining in my eyes. I am angry the patent greed has stunted this for so long. There is no physical reason we cannot have laptops and desktop displays with this tech, it's all business bullshit.
Earlier quoted context omitted.
That wouldn't work outside in bright light, and would send bad blue light though. Been waiting for an e-ink laptop specifically for working with it outside in the sunlight, and in the evening, since blue light is supposed to be really bad for humans at night.
For 1000 USD you can get a Boox Max 2, which is basically full-fledged Android tablet with a great stylus, and which is better as HDMI-capable display too. "Dasung Paperlike PRO vs Onyx Boox Max2 Pro Extended Monitor" https://www.youtube.com/watch?v=6pw-oCItgx8
E Ink seems to be one of the technologies that is hampered solely by patents. It's too sad that we're only going to get major innovations in e ink tech in 15-20 Years...
You can't keep things secret by patenting them. These are trade secrets, which last indefinitely. However, trade secrets are granted fewer protections.
Earlier quoted context omitted.
Why would you use an e-ink display for videos? The main advantage is the low power consumption because it needs power only to refresh, using it for a video it will negate that advantage and draw much more power than a traditional display with an awful image quality...
1. Currently, I use it for writing code and reading papers. However, I still want the monitor to be a good enough drop-in monitor for things I need to occasionally do. For example, I need to switch to a browser window to check what was that error I'm getting. 2. Visual snow syndrome: Many had their first experience of visual snow after staring into the screen for too long. People who believe in that is the cause of v…
Juul spent a good amount of time working out how to read the stored waveform configurations (different for each unit) and getting them to run at a reasonable speed.
Earlier quoted context omitted.
So it's a question of total light intensity, not of being reflected or "direct" (whatever that means).
I don't think so myself because I don't have pain in full sunlight reading print or E-Ink which is much brighter "nits" than an LED backlight produces ....but even low settings on an LED backlit computer hurt. There is in my opinion a difference between looking into a light source and looking at things that are visible due to reflected light like E-Ink, paper, the objects around us even if I cannot quantify it with s…
Here is a teardown of a 13.3 high perf E-ink monitor I did a few months ago: https://kevzettler.com/2018/02/11/dasung-paperlike-pro-teard... The post identifies some on market E-ink display components and discusses the design of a proprietary display driver.
"On closer inspection all the chip components have had their labels chemically peeled off to prevernt reverse engineering." Wow, I've never seen that. Is it a common thing? It also puts me off buying one of these (assuming the $900 price tag hadn't put me off already).