> Digital signals must have HDCP, firewire doesnt have that. Plus firewire is in the first place for compressed signals. Not decompressed signals. <<br />
Completely bogus. Have you ever heard of DTCP (aka, 5c)? Just because FW is suited for compressed signals does not mean that the sets themselves can't decompress and display the HD signals... which, in fact, they can. Take a compressed, protected digital signal from a cable co. STBs firewire output, and feed it to an appropriate TV with FW input. After negotiating the security handshake, the TV will decode, decompress, and display the video stream.
> The input on your HDTV will be for video only though. <<br />
Also bogus. The FW stream carries BOTH video and audio signals.
> There would be little to no advantage using the firewire TS interface for audio or video since the stream from Blu/HDDVD must be protected <<br />
No problem there.
> ...and MPEG2 ones are too higher rate <<br />
This is also incorrect. No MPEG2 streams from HD optical media come anywhere near the 400 MBit/sec capacity of FW.
> whilst AVC/VC1 are generally unsupported by TS firewire anyway. <<br />
Not unsupported by FW itself (it could carry it), but certainly any receiving device would need to know what to do with it, and no TVs that I'm aware of do (or ever will, with the waning of FW, partly based on widespread misconceptions, as echoed here).
And to the OP, Vitale asked:
> I have had these useless Firewire ports on every HDTV I've had since early 2000 and not one high end electronic that I've owend ever had an output for this elusive creature...... <<br />
They're not useless if you have a cable STB, or a digital camcorder, or a D-VHS tape deck, or an Indigita AVHD Hard Disc Drive, or a Moxi HD DVR with FW, or a PC with FW to record OTA tuner material and play it back.
You ARE correct that none of the sat.cos. support FW output, which has negatively impacted its value/usefulness. And none of the consumer optical disc players support it either.
> If they are not going to make anything to use them on, remove them from the TV sets and charge me less! <<br />
That is exactly what is happening. Well, at least the "removing" part.