Patent ID: 7801936

Claim:
An apparatus for generating a waveform having a defined output value for all input values, the waveform including at least one operational input window wherein the output value of said waveform is substantially equal to a base value for substantially all input values outside said at least one operational window and the output value of the waveform is determined by a window function for substantially all input values within said at least one operational window, the apparatus comprising: a first electronic circuit to provide a continuous function that includes said operational window function, a position locus parameter for determining a position of said operational window, an operational window aperture parameter for determining a width of said operational window, and a slew rate parameter for determining the slope of transition rate for output values of said function from said base value to a value based on said operational window function for input values near at least one edge of said operational window; and a second electronic circuit to select said operational window function and said position locus parameter, said operational window aperture parameter and said slew rate parameter to achieve a desired waveform.