Patent ID: 8487684

Claim:
A method for buffering clock skew with a logical effort, applicable to a clock tree that stays in a strong-inversion region, a moderate-inversion region, or a weak-inversion region, the method comprising the steps of: establishing in the clock tree a temperature sensor and a tunable-width buffer, and establishing width and temperature comparative lists, according to a logical effort equation, for the tunable-width buffer to be individually applied to the strong-inversion region, the moderate-inversion region, and the weak-inversion region; selecting one from the width and temperature comparative lists that corresponds to one of the inversion regions in which the clock tree stays, enabling the temperature sensor to sense a temperature, and searching the selected width and temperature comparative list for a width that corresponds to the temperature sensed by the temperature sensor; and enabling the tunable-width buffer to perform a width modulation process according to the searched width.