Well, seems a lot of you is very good in theory. but you guys are missing something. Its true a digital signal is either ON or OFF. But in real life, the signal is more like analog (sine wave) due to resistance or others

no need to buy expensive cable. my company is developing alternative to HDMI using optical. Will save you a lot of buck next year.

its the HDMI standard but using optical instead of copper in the transmission line. So you can imagine something like fiber optic (but its not). small only unlike copper. hope it will be ready by next year

Im an engineer in HDMI industry.
Let me clarify something. Not all HDMI are the same. HDMI are operated at Ghz frequency. It affects the resistance and conductance of the copper. Even loose connector does affect the transmission. To pass the HDMI certification test, manufacturer have to pass the eye pattern/diagram that are determine by the spec.

There are 2 category of the test.
Category 1 - equivalent to 720p or 1080i (74.5 MHz)
Category 2 - more than enough for 1080p (340 MHz)

a cable vendor can designate a cable as Category 1 or 2, but cannot specify a lower bandwidth, and consequently, all HDMI 1.3 compliance testing is done at at least 720p/1080i frequencies.

In case of Category 1 certified cable:
For high qualty cable, u should be able to transmit data without any error on 1080p device.
For a low quality cable, u must be very lucky for it to works on 1080p (yes, it can work)


Why? because no test to certify that the cable able to operate at least 1080p. Those low quality cable might just barely pass the test. You can buy certified category 2 cable to be sure. But of coz, prepare to pay more

hope this help

what is all the fuss? u want to buy cheap HDMI buy la. I NEVER said it wont work. but there is no gurantee it will work. If it work, just enjoy ur saving