[mythtv-users] USB keyboard control of digital cable box

Steven Cruysberghs steven.cruysberghs at pi.be
Mon Mar 22 08:15:34 EST 2004


Or you could use a wireless USB keyboard receiver and send the
keypresses using lirc.

> -----Oorspronkelijk bericht-----
> Van: mythtv-users-bounces at mythtv.org 
> [mailto:mythtv-users-bounces at mythtv.org] Namens Khanh Tran
> Verzonden: maandag 22 maart 2004 13:30
> Aan: Discussion about mythtv
> Onderwerp: RE: [mythtv-users] USB keyboard control of digital 
> cable box
> 
> 
> Great!  So, then someone must have at least ATTEMPTED writing 
> something close to what I'm looking for, no?
> 
> 
> -Khanh Tran
> khanh at khanh.net
> 
>  
> 
> -----Original Message-----
> From: Ben Scott [mailto:benscott at cableone.net] 
> Sent: Monday, March 22, 2004 12:26 AM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] USB keyboard control of digital cable box
> 
> There is a thing generally called a USB link cable, I think 
> they even sell them at places like Best Buy and Comp USA.  
> Here's a link I found on Google for one: 
> http://www.usbgear.com/item_102.html
> 
> So it's basically a host on both ends, and a funky little box 
> in the middle pretends to be a device for both hosts
> 
> As for getting that to work on linux and then using it to 
> send keyboard commands, well...
> 
> Ben Scott
> 
> Andrew Jamieson wrote:
> 
> >----- Original Message -----
> >From: "Khanh Tran" <khanh at slc.edu>
> >To: "Discussion about mythtv" <mythtv-users at mythtv.org>
> >Sent: Monday, March 22, 2004 12:29 PM
> >Subject: [mythtv-users] USB keyboard control of digital cable box
> >
> >
> >I've got a Scientific Atlanta 4200 digital cable box.  It's got a USB
> >port on the back and interestingly enough, I can plug any 
> USB keyboard 
> >into it and change channels by entering the numbers.  Is 
> there any way 
> >to make MythTV or Linux output the keyboard commands to control the 
> >cable box?  I've heard of serial port control of satellite 
> receivers, 
> >so it's not too far off I suppose...
> >
> >Thanks!
> >
> >
> >-Khanh Tran
> >khanh at khanh.net
> >
> >
> >
> >Not easily.  USB is a master / slave system (actually Host / 
> Device is
> >the official nomenclature) - a keyboard is a Device and a PC 
> is a Host,
> 
> >as would be your cable box.  Communication is not possible Host <->
> >Host or Device <-> Device.  To do what you ask you would 
> need some way 
> >to control an
> >(external) USB device from the mythTV box that then 
> presented itself as
> 
> >a USB keyboard to your cable box.  This is perfectly 
> achievable with a
> >custom micro-controller design (say RS232 serial -> 
> micro-controller / 
> >USB -> cable
> >box) but can't be done without such custom hardware.  I know of no 
> >commercial products that do this.
> >
> >
> >Andrew Jamieson
> >
> >_______________________________________________
> >mythtv-users mailing list
> >mythtv-users at mythtv.org 
> >http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
> >  
> >
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> 
> 
> 



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