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What is 'ghosting'? - Page 4

post #31 of 48
Quote:
Originally Posted by TwoCables View Post
The word "Ghost" refers to something that appears out of nowhere, and that's exactly what the problem used to be with older keyboards: if 2 or more keys were pressed simultaneously, then sometimes other characters appeared that you did not press - not even accidentally.
Just to point out, I don't think there's ever been a manufacturer who has ever willingly designed a keyboard with ghosting issues, for the simple reason that they make a keyboard unusable. Older keyboards were either capacitive, or used diodes and thus were NKRO. When people started moving over to membrane based keyboards, they began to use blocking controllers. If a keyboard has ghosting, it means they have ****ed up big time. If someone advertises their keyboard as being 'anti-ghosting', it's like someone advertising a car as 'anti exploding'.

Otherwise I agree. Ghosting is when unpressed keys are registered. Blocking is when pressed keys are not registered. It's that simple.
Edited by ch_123 - 4/8/11 at 9:55am
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post #32 of 48
Huh. I didn't think that anyone would ever assume that any manufacturer intentionally designed keyboards to have ghosting because after all - that's an inconvenient problem. So, I didn't even think that it would be necessary to make sure to say that there has never been a manufacturer who intentionally made keyboards that have ghosting issues.
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post #33 of 48
Just the reference to older keyboards. I don't think it's something is exclusive to older keyboards. I mean, some relatively recent mechanical keyboards have had issues with ghosting.
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post #34 of 48
I've been saying that my PLU has 2KRO problems but it actually has a Ghosting problem.
I hold W, Shift, A or D and hit the Space Bar and 1 or 2 registers.
Very annoying. I gave it to my son and he complained so much that he ended up using a Fellowes domes till he gets his Leopold. I ended up using it for my CCTV CPU.
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post #35 of 48
Quote:
Originally Posted by DarthBaiter View Post
I've been saying that my PLU has 2KRO problems but it actually has a Ghosting problem.
I hold W, Shift, A or D and hit the Space Bar and 1 or 2 registers.
Very annoying. I gave it to my son and he complained so much that he ended up using a Fellowes domes till he gets his Leopold. I ended up using it for my CCTV CPU.
That's not ghosting. Ghosting is when key signals are sent for keys that you didn't press. It's not related to blocked keys. A "ghost" is an apparition that appears out of nowhere.
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post #36 of 48
Quote:
Originally Posted by TwoCables View Post
That's not ghosting. Ghosting is when key signals are sent for keys that you didn't press. It's not related to blocked keys. A "ghost" is an apparition that appears out of nowhere.
And that's exactly what he was describing.
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post #37 of 48
Quote:
Originally Posted by De-Zant View Post
And that's exactly what he was describing.
It looks to me like he's saying that he was experiencing blocked keys.
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post #38 of 48
Quote:
Originally Posted by TwoCables View Post
It looks to me like he's saying that he is experiencing blocked keys.
He's saying that 1 or 2 registers when he hits the other keys aka. ghosting.
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post #39 of 48
I'll just wait for him to clarify it.
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post #40 of 48
Ghosting:
Hitting multiple keys and have "ghost" keys appear in the output. Keys that you did not press. Press three keys at once, and have four key strokes output.

Anti-ghosting:
Blocking the ghost keys. As simple as that. This will not affect if you can press more keys at once or less. Just that your keyboard will not ghost.

Key rollover:
The minimum number keys you are able to press at once. Keyboards are pretty much all either 2KRO, 6KRO, or NKRO.

NKRO:
Each key press is detected correctly, any combination being possible. Thus being the best.

Keys blocking is just dependent on how the matrix is laid out. There is no standard for this, and many keyboard have a different matrix. If you want to play games, you probably want to get a keyboard with NKRO/6KRO. There's many ways to play games, and different keybindings. So if you want to guarantee that anything you press will work, that's what you want.
Edited by clownfart - 4/8/11 at 12:12pm
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