Oculus Rift Control Box - Will it include a USB hub?

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glen
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Oculus Rift Control Box - Will it include a USB hub?

Post by glen »

Hi

Does anyone know if the control box will include a usb hub?

If not, Palmer (if you are reading), can the consumer version include a usb hub please, it will be so much easier to be able to plug in a controller and headset to the controller box than have numerous cables going back to the pc.

Glen
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by cybereality »

I don't think it does, but that would be pretty cool.
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by MSat »

I believe the update rate of the tracker pushes some of the limits of USB2, so a bridge would have adverse affects on tracker performance..
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Chriky
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by Chriky »

Also I believe with the 5.6" screen at least you could run the whole thing off USB which probably wouldn't be true if it was also powering a controller with rumble etc.
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by logicalChimp »

MSat wrote:I believe the update rate of the tracker pushes some of the limits of USB2, so a bridge would have adverse affects on tracker performance..
I could be wrong (wouldn't surprise me) but I thought most USB ports on a computer shared the same internal bus anyway - so it wouldn't matter where you plugged your controller in, it's going to be sharing bandwidth with the tracker.

Still, it's a good point about the power...
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by EdZ »

MSat wrote:I believe the update rate of the tracker pushes some of the limits of USB2, so a bridge would have adverse affects on tracker performance..
Even with 1000Hz updating, each update would have to a good 35Kb to saturate USB2.0. Even for raw data, 9 x 64bit floating point values (let's be generous) at 1000Hz would only be ~ 0.5Mbps.
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by brantlew »

EdZ wrote:
MSat wrote:I believe the update rate of the tracker pushes some of the limits of USB2, so a bridge would have adverse affects on tracker performance..
Even with 1000Hz updating, each update would have to a good 35Kb to saturate USB2.0. Even for raw data, 9 x 64bit floating point values (let's be generous) at 1000Hz would only be ~ 0.5Mbps.
Yeah, I seem to remember from discussions with nrp that the total bandwidth was not the problem - but the speed of I/O interrupts, since each position update is an individual packet that has to be serviced. nrp, you want to chime in on this?
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by Dycus »

Yes, bandwidth isn't the issue. Sensor data packets can't be that big. :P The limit really is how quickly you can poll the bus, and at 1000hz, adding other devices will slow down both.

I'm sure you don't need to poll that quickly for most applications, though. Pretty sure you can reduce the polling rate (but don't quote me on any of this stuff, please. I'm just speculating with the rest of you).
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by Cathodoluminescence »

... and if it is just about a controller, you could easily use a wireless one!
PalmerTech
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by PalmerTech »

logicalChimp wrote:
MSat wrote:I believe the update rate of the tracker pushes some of the limits of USB2, so a bridge would have adverse affects on tracker performance..
I could be wrong (wouldn't surprise me) but I thought most USB ports on a computer shared the same internal bus anyway - so it wouldn't matter where you plugged your controller in, it's going to be sharing bandwidth with the tracker.

Still, it's a good point about the power...
Most computers have at least a couple buses, even on laptops. Putting a hub in the Rift control box would only encourage people to put all their devices one bus, which should be avoided if possible.

You could always velcro a hub to the box if you want, though. :P
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by ChrisP »

WOW never seen the post above me well now we know.
Last edited by ChrisP on Tue Dec 11, 2012 6:28 pm, edited 1 time in total.
glen
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by glen »

PalmerTech wrote:
Most computers have at least a couple buses, even on laptops. Putting a hub in the Rift control box would only encourage people to put all their devices one bus, which should be avoided if possible.

You could always velcro a hub to the box if you want, though. :P
Hi Palmer

Thanks for the reply, much appreciated.

Regards Glen

p.s. Any chance of the Doom 3 license keys being distributed early? Also will they be via Steam?
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by 2EyeGuy »

glen wrote:p.s. Any chance of the Doom 3 license keys being distributed early? Also will they be via Steam?
I'm not sure that's a good idea. We don't want people finishing Doom 3 BFG before they get their Rift and then missing out on playing it in the Rift.
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by Valez »

That would be most unlikely. :)
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Re: Oculus Rift Control Box - Will it include a USB hub?

Post by TheHolyChicken »

2EyeGuy wrote:
glen wrote:p.s. Any chance of the Doom 3 license keys being distributed early? Also will they be via Steam?
I'm not sure that's a good idea. We don't want people finishing Doom 3 BFG before they get their Rift and then missing out on playing it in the Rift.
I also think that would be most unlikely.

I was personally considering revisiting Doom3 just so I could more accurately compare the VR experience to the non-VR experience, so that it was fresh in my memory ;)
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