Patent ID: 7643956

Claim:
A continuous self-calibrating circuit for monitoring and adjusting an analog signal to be supplied to an operating circuit, comprising: a control circuit including an adjusting circuit for adjusting the strength of the analog signal; an analog-to-digital converter for receiving the analog signal and converting the analog signal to a digital signal having a value; a comparator for comparing the value of the digital signal to a predetermined value, wherein the comparator generates a comparator signal in accordance with the value of the digital signal and the predetermined value, and wherein the adjusting circuit receives the comparator signal and adjusts the strength of the analog signal based upon the value of the comparator signal; an output for outputting the adjusted analog signal to the operating circuit; and a storage device for storing the predetermined value; and a target register, wherein the target register receives the predetermined value from the storage device, and wherein the comparator receives the predetermined value from the target register.