Patent ID: 8508262

Claim:
A method comprising: accessing a first periodic electronic signal at a first frequency; accessing a second periodic electronic signal at said first frequency, said second periodic electronic signal characterized as having a one half cycle phase relationship with said first periodic electronic signal; accessing a third periodic electronic signal having said first frequency and characterized as having a one quarter cycle phase relationship with said first periodic electronic signal; accessing a fourth periodic electronic signal having said first frequency and characterized as having a one half cycle phase relationship with said third periodic electronic signal; averaging said first and said second periodic electronic signals to produce a first averaged periodic electronic signal; averaging said third and said fourth periodic electronic signals to produce a second averaged periodic electronic signal, wherein said averaging produces an output signal with a duty cycle closer to 50% than a duty cycle of an input signal; and combining said first and second averaged periodic electronic signals in an exclusive OR circuit to produce an output periodic electronic signal at twice said first frequency.