Question [Q] Anyone have an idea between Cypress Floating touch and Synaptics Hover?

If the Cypress floating touch is the combination of mutual-capacitance and self-capacitance, how does synaptics sensitive touch works?
According to chipworks.com, Galaxy S4 uses synaptics s5000B controller. I cannot find a direct explanation of synaptics technology in there site?

this is a good point to start an android application leveraging those technology in the future.