Hacker News new | ask | show | jobs
by numpad0 221 days ago
Why isn't there still no HID or touch coordinate feedback feature in HDMI? That would solve this problem once and for all. There are Ethernet over HDMI, CEC(IR remote), ARC for audio, but not USB or touch. That seems like a mildly big oversight.
2 comments
wtallis 220 days ago
HDMI is first and foremost (and at times, almost exclusively) designed to serve the needs of TVs and related devices. Its presence on PCs and other devices outside the home theater space is largely a consequence of the fact that HDMI until recently was just a new connector carrying DVI signals plus some extensions.

The more relevant connector here would be USB-C, which can readily carry a mix of DisplayPort video signals, USB (including HID), and power, over a connector that is now universal for smartphones. A phone today connected over USB-C could handle all the processing for a very "dumb" car head unit. Aftermarket head units are mostly Android devices already, albeit not literally using USB-C internally.

link
numpad0 220 days ago
USB-C can't readily carry everything. There are specific and expensive electronic switch things on host side that has to be handled with gloves by experienced mixed signal experts. It's standardized and allowed, but you're on your own in terms of making it work.

Getting HID through HDMI is nothing compared to that. Just Arduino level stuff. It only has to be standardized for interoperability. Car brands that seek to disinfect cars of Apple/Google disease will benefit a lot from that.

link
yard2010 220 days ago
The problem is that the car manufacturers need a way to extract more money to "grow" and pay for their execs. This won't solve this problem for them, just create another one.

Now this is the problem. Money on a large scale just becomes a huge conflict of interest. This is where regulation should come in, but real regulation, not the bs of the crooked business man that manages the country in the same way.

Excuse me if I'm snarky.

link