Puzzled about tech aspect of 3DTV and NVIDIA 3D

I would appreciate it greatly if someone could explain some parts of 3D technology I don't understand. Looking on the internet yields very conflicting information so I thought I would ask the very knowledegable people here.

The 3D tech that I am looking at is active shutter technology.

What I would first like to know is the signal speed of HDMI cables when a 3D capable blu-ray player and 3D TV are connected. Does the signal travel at 120Hz to be able to create the two separate images needed for 3D (one image for each eye), or does the signal travel at 60Hz and the TV splits the image into two frames?

For NVIDIA 3D vision, I know you need a 120Hz monitor and the IR transmitter for the shutter glasses. I am almost certain that the signal for this 3D technology travels at 120Hz along a dual link DVI cable. Can anyone confirm that?

For NVIDIA 3D TV Play I get confused again. Does the signal in this one travel at 60Hz to the TV and the TV separates the images into two frames?

I am so confused at the moment. :confused

 

I don't like to do this, so this will be my one and only bump. I still can't wrap my brain around this problem.

Cheers