Thin films of inexpensive composite polymer electrolyte membranes containing inorganic cation exchange materials including various clay based fillers are fabricated by solution casting. The first circuit may be configured to generate a first control signal, a second control signal and a third control signal in response to a first interlaced video signal. A merge scheduling process determines when a merge should be initiated, selects instances of the index to be merged and selects a type of merge to perform.