Video-out support

[Al Johnson]

On Tuesday 26 August 2008, Robin Paulson wrote:
> 2008/8/27 Harald Welte <laforge at openmoko.org>:
> > On Tue, Aug 26, 2008 at 02:46:23PM +0200, Francesco Cat wrote:
> >> Isn't USB 2.0 required for USB-to-VGA adapters?
> >
> > yes, USB2 is required for all USB-to-VGA adapters that I have ever seen
> > as a mass product.  The reason is very simple: A full-screen uncompressed
> > video has much more bandwidth than USB1 can sustain.
> >
> > I've only ever once seen a pre-mass-production prototype of a USB1-to-VGA
> > adaptor. And that was in fact an entire PXA27x based linux system with
> > something like VNC.  Just no configuration or user i/o of any sorts.  But
> > even that never made it mass-market.
>
> have you thought about going through the wireless interface? that's
> got way higher bandwidth than the usb port
>
> i found these on google; they're a bit big and not cheap, but maybe...
>
> http://www.amazon.com/External-Wireless-Projector-Adapter-wi-fi-Ethernet/dp
>/B000FEHB5I
>
> http://www.amazon.com/Addlogix-MA-WL-DVGA-Wireless-Projector-Adapter/dp/B00
>0ENSTE2
>
> http://www.washingtonpost.com/wp-dyn/content/article/2008/06/11/AR200806110
>0099.html

At those prices I'd go for a beagleboard instead. It's got the sound and video 
output capability and the USB. Add WiFi if needed, and use VNC or a modified 
NX for display. For video it's probably better to stream the file to the 
beagleboard and let it do the decode locally.