Patent ID: 7696741

Claim:
An adaptive measurement system for measuring a transition rate associated with an output of a device in synchronous operation with a pulse width modulation signal, comprising: an input signal-to-frequency converter subsystem that receives a first signal that is proportional to the output of the device and quantizes a characteristic of first signal, the input signal-to-frequency converter subsystem providing a second signal having multiple states and a transition rate that is proportional to a rate of quantization of the characteristic of the first signal; an accumulator that receives the second signal and that accumulates a state transition count that is representative of a number of transitions between the multiple states in the second signal over a first sample period; a transition rate measurement subsystem communicatively coupled to the accumulator and that reads the accumulator in synchronization with the pulse width modulation signal to find the state transition count and determines an instance of average transition rate for the second signal based at least upon the state transition count and the first sample period.