Status for Universal Power Adapter for Mobile Devices (2019)

I quite like the idea of a common interchangable power supply for laptops, like micro-USB is/was the common interchangable power supply for phones. Hence I have been keeping half an eye on Universal Power Adapter for Mobile Devices.

There doesn't seem to be any actual users of that standard, so I sent an email to IEEE inquiring if they knew of any users. This is the excellent reply I got from chair Leonard Tsai:

Hi, Thue,

I am the chair for IEEE 1823 working group and your email inquiry was forwarded to me early. Sorry about the belated reply as I just travelled to Asia. Currently the IT market which 1823 standard was originally intended had been swayed by USB SIG to use type C connector as alternatives. However, EU standard body had made inquiry to see if 1823 should be consider as the preferred connector for next get mobile device. Also, there are new interests from some automotive industry players that are looking at distributing DC bus inside a car (obvious that 1823 with CAN Bus as control method is preferred than USB type C which was not designed for harsh environment).

As for commercial deployment, unfortunately I don’t have a definite answer for you. Several power supply vendor in Asia had made prototypes about 2 years ago but I did not get any further updates after that.

I hope this address your question. Please feel free to contact me for further follow ups.

Thanks,

Leonard

Kommentarer

Send en kommentar

Populære opslag fra denne blog

PHP's implementation of fgetcsv() and fputcsv() does not follow RFC 4180 or Wikipedia's description, and does not work in all cases with Excel or OO Calc, as described in bug http://bugs.php.net/bug.php?id=50686 . Here is an RFC 4180-complient implementation in PHP. This can parse more than 1MiB of CSV text per second, so should be fast enough for most uses. It is fairly strict, in that it does not allow whitespace before the start of a quoted item, such as 1, "2" ,3 , in according to the standard, but it would be simple to make it laxer. It supports both \r\n and \n linebreaks, where the standard only supports \r\n. whitespace is just another data character, so '1, 2,3 ' becomes Array(1, " 2", "3 "). backslashes are also just another character, as backslashes have no special meaning in RFC 4180. The code below may be used and redistributed without restrictions. You may consider buying me a beer if you find it useful. class csv { priva
Læs mere

Making the Trust 1200 Wireless tablet work on Linux

I have gotten access to an old wireless tablet ("wireless" as in the pen is battery powered, tablet is wired USB), and have gotten it work. Since it was not trivial to figure out how to do that, I though I would describe the steps. First the context: in the old days, X11 communicated directly with the hardware. So for a tablet to work, there needed to exist an X11 driver. There seem to be 2 kinds of tablets: Wacom tablets and non-Wacom tablets, with Wacom tablets generally having much better Linux support. So the first thing I found was some X11 Wizardpen drivers which had not been updated since 2011, which supposedly supported various non-Wacom tablets. This was very much a blind alley. After some further investigation, I found that in the newer Wayland architecture, tablet drivers had been moved into the kernel, and the Wayland project libinput had been created as a middle layer. And in fact the DIGImend project had already created a driver for my tablet (which turn
Læs mere