Patent ID: 8688393
Filing Date: 2014-04-01
Classification: A61N,G01D,G01P,G01R

Abstract:
1. A system comprising: a capacitance adjustment module configured to connect one or more of N capacitors in parallel with one of a first and second capacitance; a capacitance comparison module configured to determine which of the first and second capacitances is smaller; and a control module configured to identify the smaller capacitance and the larger capacitance of the first and second capacitances based on the determination made by the capacitance comparison module, and subsequently, during each of M iterations: instruct the capacitance adjustment module to connect at least one of the N capacitors across a set of nodes in parallel with the smaller identified capacitance; and determine whether the capacitance associated with the set of nodes is greater than the larger identified capacitance, wherein, after the M iterations, the control module is configured to approximate a difference between the first and second capacitances based on as being equal to a sum of the N capacitors that are connected across the set of nodes, where M is an integer greater than or equal to 1, and N is an integer greater than or equal to 2.