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Is HDMI switch bi-directional

Last response: in Other Consumer Electronics
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July 25, 2012 2:47:12 PM

Lets suppose I have a HDMI switch box that takes two inputs and has one output and allows me to switch between which input I want to display on a device connected to the output (e.g. in #1 xbox, in #2 psp, out TV)

Can this be easily reversed, that is, if I have a single input (PC for example) can I plug it into the "output" on the box and use the switch to send the signal to either of two monitors connected to the "inputs" on the box if I only want one of the monitors on at a time? e.g. in #1 TV #1, in #2 TV #2, out PC

thank you

More about : hdmi switch directional

a b x TV
July 25, 2012 4:42:54 PM

It can't be reversed. HDMI requires a hardware handshake that will not happen if you were to do what you have described, you might consider looking at an HDMI signal distribution block, that would do what you are describing. It simply produces an identical HDMI signal on both monitors. If you are dealing with an unsuppored resolution, the box is not smart enough to fix itself, so both monitors have to support the same Res.

http://www.aliexpress.com/product-fm/383151642-HDMI-Spl...
July 25, 2012 8:17:25 PM

Thank you for your reply - that is a bummer because actually I don't want both monitors to be on at the same time. I would just like to have a switch box where I flip a switch and the output changes between the two screens (rather than to unplug and plug the cables). Would it be possible with DVI instead of HDMI?
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a b x TV
July 25, 2012 8:58:53 PM

you can use a cheap HDMI to DVI cable.
July 25, 2012 9:39:00 PM

Yes, that's what I'm hoping for ... but the PC output is DVI, so I first need DVI-to-HDMI and then back HDMI-DVI. Should work in theory but ... I'm a bit skeptical :D 
a b x TV
July 25, 2012 10:11:57 PM

HDMI and DVI are cross compatable. Worst case, your sound would/could get stripped from the signal at the monitor.
July 26, 2012 7:02:36 AM

Sound will get stripped/will not exist. DVI does not carry sound because the port does not support it, not because the cable does not support it!
a b x TV
July 26, 2012 3:34:44 PM

rubbateckie said:
Sound will get stripped/will not exist. DVI does not carry sound because the port does not support it, not because the cable does not support it!


This is partially incorrect. Newer video cards (Nvidia 4xx or higher, and not sure on the ATI side) output Audio via their DVI connecters when used in conjunciton with an HDMI to DVI cable, or adapter. DVI used alone does not include audio.
July 26, 2012 10:52:48 PM

jcoultas98 said:
This is partially incorrect. Newer video cards (Nvidia 4xx or higher, and not sure on the ATI side) output Audio via their DVI connecters when used in conjunciton with an HDMI to DVI cable, or adapter. DVI used alone does not include audio.

Ah interesting, thanks for the clarification! Out of curiosity, do you know if any consumer products accept sound over DVI?
a b x TV
July 26, 2012 10:59:59 PM

No, that is mainly a PC Video card feature, i've never seen that on a standard CE device. Though i'm not 100% there isn't one.
!