Patent ID: 7627844

Claim:
A machine implemented method for circuit analysis, the method comprising: determining, through a processor, a representation of a first current, drawn by a group of cells from a power supplying network of a circuit in a clock cycle, using data indicating probabilities of state switching at the cells of the group that includes determining a first number of cells from the group of cells that switch together in a same clock cycle, the representation of the first current specifying the first current as a non-constant function of time in the clock cycle, wherein the first number of the cells is determined from the data indicating probabilities of state switching at the cells of the group such that a probability of more than the first number of cells of the group switching in the same clock cycle is about a predetermined value; and wherein the determining the representation of the first current comprises selecting first cells of the first number from the group to determine the representation of the first current from currents drawn by the first number of the first cells when the first cells switch together in the same clock cycle and wherein said determining the representation of the first current further comprises determining a representation of a second current, drawn by one of the cells of the group.