A circuit for processing radio frequency signals includes a substrate where the circuit can be placed. The methods, systems, and apparatus are capable of capturing an image of a verification pattern that has been reflected from a defined region of interest of a user’s eye. The quantization step controller 74 modifies the quantization step of the encoder based on the information from the input buffer monitor, output buffer monitor, decoder monitor, reception transmission channel monitor and sending transmission channel monitor. Additional embodiments are disclosed and claimed. ,C) cooling of the resultant blend,where no polyols are used in stages A) to C).