Patent ID: 7259637
Filing Date: 2007-08-21
Classification: H03L

Abstract:
1. An apparatus providing a correction value for an oscillator comprising: at least one parameter sensor measuring at least one system parameter affecting the oscillator and providing at least one parameter output; a lookup table joined to each said parameter sensor to receive said at least one parameter output and provide a cycle adjustment value associated with each received parameter output; and a processor joinable to receive a clock signal from the oscillator, and joined to receive the cycle adjustment value from said lookup table, said processor implementing the cycle adjustment value to implement integer delay cycles wherein said lookup table compares the received parameter output with the previous parameter output to determine the direction of parameter variation and provides a down cycle adjustment as the cycle adjustment value when the parameter variation is decreasing, provides an up cycle adjustment as the cycle adjustment value when the temperature variation is increasing, and provides a selected one of the up cycle adjustment and the down cycle adjustment as the cycle adjustment value when the parameter variation is constant.