Re:Weird monitor bugs people sent me in the last 5 years
by dogleash on Monday August 29, 2022 @10:17AM
(#32638559)
>there's even porches and overscan included in the signal
Well, I guess this explains some of my "why the fuck is this even an option" when trying to make a TV just display the signal as it was received.
Re:Weird monitor bugs people sent me in the last 5 years
by p_l on Monday August 29, 2022 @10:27AM
(#32638707)
Yeah, the simplest possible circuitry for driving a flat panel TV from HDMI (except the HDCP block, which AFAIK can be placed inline before the display logic) would be to declare the 720i/p capability and then just... pump the data straight onto display interface with some buffers here and there meaning to drop the porches, driven all by HSync/VSync signal recovered from the HDMI clock. :V
Re:Weird monitor bugs people sent me in the last 5 years
by exmadscientist on Tuesday August 30, 2022 @05:42PM
(#32655522)
Incidentally, this is why DisplayPort is always preferable to HDMI if you have the choice. HDMI is kind of a stupid specification.
So imagine all the problems you could have, and multiply it by variable frequency cable that thanks to increases in resolution has to run way higher clocks than it used to, combined with being cheapest possible design, and that unlike it's analog origins an error in bitstream can now crash the connection instead of just causing temporarily off-colour area.