Is it Possible to Take advantage of TV's decoder?

[mvallevand]

David. A. Martin, Do you want to see GBPVR to output some sort of RTP multicast of the transport stream? That seems to be only logical way of doing what you want.

Martin

[zaphod7501]

As a starting point, aren't you going to need a TV with a network interface or a FireWire Input connection? You need a TV set that acts like a Media Extender without needing the seperate box.

[sub]

As a starting point, aren't you going to need a TV with a network interface or a FireWire Input connection? You need a TV set that acts like a Media Extender without needing the seperate box.

He's saying he's already got a regular digital TV that can tune in and watch digital ATSC channels, and as part of this functionality the TV decodes the video for display. He wants to know if he can make use of that decoder that is already in the TV for playback - by outputting a regular ATSC signal from the PC just like you'd receive through your antenna.

[pastro]

Remember there is quite a difference between recording a transport stream and producing a modulated ATSC compliant bitstream (COFDM or QAM256). You need specialist hardware to do that.

Agreed, but I want to take the transport stream and send it directly to the TV. Do any sets have a TSin port? The only digital inputs that I know is 656.

[sub]

Agreed, but I want to take the transport stream and send it directly to the TV. Do any sets have a TSin port?

They only way I'm aware of to get a transport stream into a digital tv is via the tuner (via correctly modulated ATSC signal).

[zaphod7501]

Mitsubishi and Samsung have TVs with FireWire connectors. They were designed for connection to D-VHS VCRs, Digital Camcorders and Cameras and Cable/Sat DVRs. A quick search turned up Mac software for recording and playback using FireWire with a Mits TV as well. Windows FireWire software, to this point, has been designed to interface with Set-Top-Boxes for recording HD and not for connecting to FireWire equipped TVs.

I think the FireWire input would be the only way to sent transport streams to a TV to use the TV's internal decoder. I don't think the FireWire port system works very well right now but it should be possible to pass digital recordings back to the TV or even transcode standard mpeg to transport streams for transfer.

When FireWire was first announced for consumer electronic devices, it was advertised as a single wire connection method for your VCR, DVD, Hi-Fi Amp and Set-Top-Box to your TV interface. DRM (5C?) and the very short length of wiring allowed (15 feet) crippled it's use almost immediately.

[pastro]

They only way I'm aware of to get a transport stream into a digital tv is via the tuner (via correctly modulated ATSC signal).

Got it. When we were talking with customers about 2 years ago, supposedly there was a push to allow TS in. Sounds like those sets are not out, or shelved for the time being.

[David.A.Martin]

Hi all, been almost 2 months since I checked this thread. Thank you all for your helpful posts, thoughts and info. Sounds as though, pumping back out an ATSC compatible signel (over a coaxil connection) would require very expensive equipment.

To bad, in theory it seems like it should be so simple. Perhaps the hardware costs comes in with finely tunning the frequency of that signel etc, and perhaps the narrow market demand for that kind of equipment.

Thanks again to all for your thoughts.

[pastro]

Hi all, been almost 2 months since I checked this thread. Thank you all for your helpful posts, thoughts and info. Sounds as though, pumping back out an ATSC compatible signel (over a coaxil connection) would require very expensive equipment.

To bad, in theory it seems like it should be so simple. Perhaps the hardware costs comes in with finely tunning the frequency of that signel etc, and perhaps the narrow market demand for that kind of equipment.

Thanks again to all for your thoughts.

I'll check again with our sales folks and see if there are sets with transport in coming any time soon.