I'm currently working on a design in which I need to transmit serial data over 3 different serial channels. I won't be transmitting data far (1" - 1') but I didn't want to use plain wires. Instead, I thought it may be useful to implement the standard HDMI connector and cable to transmit this data. However, I have a few questions.
1) Are HDMI cables designed for only transmitting data on specific conductors? It appears that some of conductors are 'paired'. I assume I would just need to be cautious on what conductors I place the signals? My serial data will be transmitted much slower than most audio/video data streaming that HDMI is typically used for.
2) I'm going for a compact design, I've thus considered using micro HDMI for the small form factor. Besides the form factor, are there any other differences between micro and standard HDMI connectors/cables?
3) Where are we at with regard to the life time of HDMI cables? I'm trying to create a device that will last a long time. Is HDMI/Mini HDMI/Micro HDMI on there way out any time soon? I know they've been around for close to a decade now, are there any other rising standards that I should be considering?