[mythtv-users] Digital cable question?

[Nick Deng]

Well, 
I have looked over more than a few mailing lists for the cable box set up via serial port. I have
a motorola 2224 model with a serial port and I have not been able to confirm the serial port (
labeled as DATA) can be used for my purpose. It seems to me people have better luck with 2244 than
2224.
Anyone out there with comcast cable service and with motorola 2224 please confirm this?
Thank you all for any input on this,
Dan
--- Ray Olszewski <ray at comarre.com> wrote:
> At 03:20 PM 10/22/2003 -0700, Nick Deng wrote:
> >It sounds dumb, but I post it anyway. My impression is my cable (digital) 
> >signal comes from the
> >box, so my mythTV just may not work as it is supposed to  (scheduled 
> >recording, I meant)?
> >
> >Please give me some clarification, although it is kind of a simple if not 
> >stupid
> 
> Not a stupid question, but a FAQ nonetheless. I don't recall if the Myth 
> HowTo addresses it in basic enough form (if not, perhaps it should), so let 
> me try once more here.
> 
> If your TV signal comes through a digital-cable box, or a satellite-TV box, 
> you cannot use the built-in tuner of the video-capture card in your MythTV 
> backend to select channels. Instead, you need to connect the external 
> device to appropriate ports on the MythTV backend's video-capture card; 
> this usually means Composite-In and associated audio (the familiar trio of 
> red-white-yellow RCA plugs), though some devices may support S-Video 
> connections. Then you need to change channels on the external device.
> 
> In principle, you can use MythTV to change channels on your external 
> (digital-cable or satellite-TV) device in either of two ways.
> 
> One, an "IR blaster" device can be used to output infra-red signals that 
> correspond to the ones used by the external device's remote control. Myth 
> uses the Linux application "lirc" to do this. Section 8.7 of the Myth HowTo 
> has some information about this option, though you will probably need to 
> search the mythtv-users list archives and the information at the lirc home 
> site (http://www.lirc.org/) for moe information about how to make this 
> work, espedially with newer hardware than what the Myth HowTo covers.
> 
> Two, some external devices can be controlled by a serial connection between 
> them and a device like a MythTV PC or a commercial DVR (e.g., a TiVo). 
> Exactly what (if anything) will work for you here depends on the details of 
> your external hardware. Your best bet is to find out the exact model of 
> external device you will be using and search for information specific to it 
> in the mythtv-users mailing list archive.
> 
> 
> 
> 
> > _______________________________________________
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> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> 


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