1. A method of driving a plasma display including a plurality of discharge cells and driven by dividing one frame into a plurality of subfields having weight values, the method comprising: dividing one screen into a plurality of areas, wherein each of the areas corresponds to at least one of the plurality of discharge cells, and wherein the plurality of areas form a detection pattern; displaying the detection pattern in the plasma display; receiving a detection image which has been previously detected or captured by a contact device, wherein the detection image corresponds to at least one of the plurality of areas; comparing the received detection image with the detection pattern; and determining a position of the at least one area detected or captured by the contact device based on the comparison.