Patent ID: 7728684

Claim:
An apparatus comprising: a reference oscillator to generate a reference oscillator signal; a temperature sensitive oscillator thermally coupled to the reference oscillator and to generate a temperature sensitive oscillator signal; a numerically controlled oscillator to receive the reference oscillator signal and generate a clock signal based, at least in part on the reference oscillator signal and an increment value signal; a circuit to receive the temperature sensitive oscillator signal, and to generate a control signal based, at least in part, on the temperature sensitive oscillator signal and the clock signal, wherein the control signal comprises information relating to a temperature deviation of the reference oscillator; memory to store data indicating a function for determining a deviation of a frequency of the reference oscillator signal; and a processor, connected to the memory, to receive the control signal and the reference oscillator signal, access the data in the memory, calculate a set of interpolated values based, at least in part, on the data using piecewise linear interpolation for an anticipated range of temperature deviation of the reference osciliator generate the increment value signal based, at least in part, on one value of the set of interpolated values and provide the increment value signal to the numerically controlled oscillator.