2020年5月26日 · The HDMI ethernet channel was never embraced by the device mfrs so it went unused, even though the cable mfrs used it as a selling feature. Now that eARC is available, in part, on some HDMI 2.0 devices, the ethernet channel is used for eARC. Once HDMI 2.1 is widely available, eARC will be able to be fully utilized using the "ethernet" channel.

2016年6月9日 · The likelihood is that today you likely still wouldn't need HDMI HEC, even if somehow the devices you own happen to implement it. There is an issue of the Ethernet Ports on smart TVs being limited to 10/100, but that's fixed with a USB 3.0 to Ethernet adapter.

2021年4月11日 · Premium High Speed HDMI is the official term for certified cables for the HDMI 2.0 option sets. Ultra High Speed HDMI is the official term for the HDMI 2.1 option sets. High Speed HDMI cables are, for the most part if well made, the same thing only the mfr hasn't opted to pay for certification process which can be costly.

2018年1月25日 · The new HDMI 2.1 spec is supposed to take advantage of that unused ethernet channel for ARC (eARC) but again, all of your HDMI connected devices would have to have the newest HDMI chipsets to utilize that and we are a long ways off …

2021年12月10日 · HDMI 2.1b - same as HDMI 2.1a but adds improved eARC. I'm just throwing this out there in case anyone comes across a discussion on this. The 2.1b addition has made improvements to the ethernet channel (still called HEC or HEAC) for eARC.

2006年10月25日 · Unless the manufacturer identifies the cable is such there is no way to tell beyond testing. Using a 1080p/60 or higher resolution/freq signal with HDMI Deep Colour at the max bit depth the kit supports is a relatively high bandwidth to use as a test. All HDMI cables handle "all" the mandatory features of HDMI (ethernet is optional).

2016年3月25日 · I'll also agree that this was a "short-sighted" decision by the HDMI committee, but eliminating an SP/DIF connection between the source and sink was the goal, and that goal was achieved in the quickest, easiest to implement, way -- make ARC equivalent to coax SP/DIF with HEC controls to tell the sink when data is being sent its way.

2011年8月15日 · HDMI audio travels in one direction, unless the HDMI cable and both devices support ARC (Audio Return Channel), and the HDMI inputs are High Speed HDMI (one of the specs). It doesn't matter what the audio is, once they leave the tv thru the toslink cable the best they can be is Dolby Digital etc.

2003年5月7日 · Forget about Version numbers on cables and as Andy says forget about HEC (HDMI Ethernet Channel) it's a non starter. Install a High Speed HDMI cable alongside your CAT cable. If you have a problem running both cables you could run HDMI + 10/100 over your CAT cable via a set of HDBaseT extenders - though it gets v expensive!

2009年5月16日 · HDMI 1.4 was just revealed, bringing with it an HDMI Ethernet Channel (HEC) that enables data transfers of up to 100 Mbps between supported connected devices. Put simply, this could allow a "broadband-connected television using its HEC-enabled HDMI port to provide internet connection sharing with another HEC-enabled device such as a game ...