jamrock
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Post by jamrock on Jul 4, 2011 7:54:35 GMT -5
Tributaries is bad. But on the package, it even claims to support 120 Hz refresh rates for LCD TVs when that is exclusively a feature built into the TV. Actually you need 120Hz input from your source to have 60Hz in each eye for 3D. 120 Hz refers to the refresh rate as you know. That is a feature of displays exclusively. For passive 3D displays, your theory is correct, but the 'refresh' is not from the source. It is done exclusively by the TV AFAIK. There is no refresh rate specs for HDMI or any other cable for that matter.
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Post by Nemesis.ie on Jul 4, 2011 8:09:33 GMT -5
TBH I think with USB 3.0 out and a couple of other techs (like Thunderbolt and cabled PCI-e) e-SATA will go away. I hope so anyway.
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Post by Nemesis.ie on Jul 4, 2011 8:15:32 GMT -5
Actually you need 120Hz input from your source to have 60Hz in each eye for 3D. 120 Hz refers to the refresh rate as you know. That is a feature of displays exclusively. For passive 3D displays, your theory is correct, but the 'refresh' is not from the source. It is done exclusively by the TV AFAIK. There is no refresh rate specs for HDMI or any other cable for that matter. No it is not exclusive to the display end (e.g. frame interpolation or double-scanning etc.). Back in the day, I used to run 100Hz to my CRT monitor to avoid flicker (anything below 80 was painful). If you hook an HDMI output from your nVidia 3D vision capable card via HDMI to a 120Hz monitor, you should indeed have 120Hz going over the cable, if not, for 3D games you would be limited to a max of 30Hz frame rate which generally is the bare minimum. So while it may not be that common (yet) it is perfecly reasonable to expect 120Hz over an HDMI cable. See these posts from last year about newer sets accepting higher refresh inputs: www.avsforum.com/avs-vb/showthread.php?t=1245196
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jamrock
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Post by jamrock on Jul 4, 2011 9:22:57 GMT -5
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Post by Nemesis.ie on Jul 4, 2011 9:47:50 GMT -5
I think you are maybe missing my point or we are talking at cross purposes.
The bandwidth on HDMI 1.4 (as an example) was increased and so it can support 2560 x 1600 (as used on hi-res, 4M pixel 30" monitors) at 60Hz. Thus, with the same bandwidth consumption, you can pass a 1920 x 1080 signal at 120Hz (which allows using active shutter glasses with a full 60Hz refresh/60fps per eye). So it is technically possible to pass a 120Hz refreshed/frame rate signal over the cable.
As to the point of the cable maker mentioning it on the package, that is likely just marketing as any cable/system supporting the required bandwidth can do it.
So no there is no specific "120Hz cable" that does something special, stating 120Hz just means the company (we hope) is certifying that the cable can carry a 120Hz signal if required - but then so should any other well made cable that meets the specs too.
I hope that makes sense and you see where I am coming from versus the packaging claims.
Edit: Note the article you linked is from 2008, things have changed since then even in the consumer TV space which the article mostly seems to be taking about.
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Post by Davecski65 on Jul 4, 2011 11:15:26 GMT -5
Just like to add my 2 cents here...just upgraded too all the new emo HDMI cableswith the 1.4 and ethernet,and have too say i have see a much better picture,i was happy going from some 3 yr old cables.
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Deleted
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Post by Deleted on Jul 4, 2011 11:33:40 GMT -5
ugh
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Post by Nemesis.ie on Jul 4, 2011 12:46:28 GMT -5
I hate to have to say it, but the "over-sharpening" I was seeing with HDMI on the UMC-1 is much less prominent with the new Emotiva cable, (and I even had to use a connector to join it to another Emotiva 2m).
I can only conclude there is a lot of "funny stuff" going on in the HDMI signaling and degraded connectors etc. can produce anomalies.
I am still a firm believer that equally well made, to spec cables will produce the same output though.
I do not see any difference between my Emotiva 2m and "standard higher quality 2m that comes with things like the popcornhour". Longer runs are always "interesting" it seems.
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jamrock
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Post by jamrock on Jul 4, 2011 13:23:34 GMT -5
Like I've stated before: "No cable can improve upon the signal it receives. It can only transmit the signal unchanged, or degrades it"
The HDMI spec is complicated, and not every manufacturer is complying with the requirements. Nevertheless, the original statement still stands.
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Deleted
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Post by Deleted on Jul 4, 2011 13:28:59 GMT -5
I'm glad it's someone other than me in this "exchange." LOL
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jamrock
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Post by jamrock on Jul 4, 2011 13:32:39 GMT -5
C'mon sister. Don't let me lose faith now!
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