Patent ID: 8251478

Claim:
A method comprising: receiving a time-varying output signal from a photosensor, the time-varying output signal comprising a plurality of peaks each corresponding to one of a plurality of marks on a recording medium detected by the photosensor as the photosensor moves over the recording medium, the marks having been printed on the recording medium by a printing system, the printing system including an encoder and a controller; amplifying the time-varying output signal from the photosensor; converting the amplified time-varying output signal from the photosensor into a plurality of digitized data points using an analog to digital converter, each of the plurality of digitized data points corresponding to a magnitude of a portion of the amplified time-varying output signal; sending signals from the encoder to the controller for interpreting a position of the photosensor as the photosensor moves over the recording medium; and generating averaged digitized data points each equivalent to an average magnitude of a portion of the plurality of the digitized data points.