Patent ID: 8572545
Filing Date: 2013-10-29
Classification: G06F

Abstract:
1. A computer implemented method of extracting capacitance from a layout record, comprising: using at least one processor to performing a process, the process comprising: selecting a mode of extraction for extracting capacitance from a layout record, the mode of extraction comprises a first mode of extraction or a second mode of extraction, wherein determining a capacitor element by imposing a voltage on a conductor to determine a total charge on or a capacitance value of the conductor based at least in part upon whether virtual metal fill is used for the mode of extraction, in which the virtual metal fill accounts for an electrical effect of an actual conductor in the layout record without including one or more shapes corresponding to the virtual metal fill in the layout record; imposing voltages on a plurality of conductors in the layout record and determining a total charge for each of the plurality of conductors, wherein the first mode of extraction is selected; and extracting the capacitance from the layout record based at least in part on the mode of extraction that has been selected.