JE's right, assuming that you are using a mode/resolution
that use lots of USB bandwidth. For example, some webcams
can easily consume around 8 Mbps of bandwidth,
so putting 2 of them on one USB controller will make
one of them suffer currently. After I have bandwidth
allocation patches done, the second open probably
won't even succeed unless both opens are at a low mode/
resolution.
~Randy
> -----Original Message-----
> From: Bret Wallach [mailto:[EMAIL PROTECTED]]
> Sent: Friday, June 16, 2000 11:20 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [linux-usb] Dual USB Controller and Video Camera
> Configuration Question
>
>
> I need them both to go as fast as possible. Also, in a post
> on May 2nd to
> linux-usb, JE wrote:
>
> "As a side note, using 2 cameras at the same time won't work
> unless you
> have 2 seperate USB busses."
>
> I'm not sure why that is though.
>
> Bret
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> > Jeroen Vreeken
> > Sent: Friday, June 16, 2000 10:02 AM
> > To: [EMAIL PROTECTED]
> > Subject: Re: [linux-usb] Dual USB Controller and Video Camera
> > Configuration Question
> >
> >
> > Hi,
> >
> > Won't it be easier to use a hub?
> > I suppose there is only one connector on youre laptop...
> >
> > Jeroen
> >
> > Bret Wallach wrote:
> > >
> > > Hi:
> > >
> > > I need to get two USB video cameras working concurrently on
> > a laptop. I
> > > currently have one working well (OV511/OV7610 based) using
> > the on-board UHCI
> > > controller.
> > >
> > > My understanding is that I'll need to get a 2nd USB
> > controller. Can anybody
> > > recommend a USB controller (e.g. PCMCIA) that works with a laptop
> > > (specifically SONY VAIO PCG-Z505)?
> > >
> > > Does this configuration have any prayer of working? (I'm
> > certainly willing
> > > to hack the OV511 driver and anything else, if necessary).
> > >
> > > Thanks,
> > > Bret
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