Great take on this tron.
The swan is a symbol for Cygnus constellation. The northern cross.
http://www.dibonsmith.com/cyg_con.htm
Ok don't forget the 3 stars are the belt of Orion. From this it goes to this ....the yggdrasill .....tree of life. (thanks Stal)
http://en.wikipedia.org/wiki/Yggdrasil
The P turns into a key which is the key of solomon. I wonder if the doctor's stethescope is a chalice and the small i is phallic symbol.