Patent ID: 7986308

Claim:
An operation apparatus comprising: a path detector means for detecting paths of a plurality of concurrently moving designated positions; a distance measuring means for measuring a distance between the plurality of designated positions detected by the path detector means; a distance-change acquisition means for acquiring a change in the distance measured by the distance measuring means; a magnification acquisition means for acquiring, based on the acquired change in distance, a magnification of distance after the change to distance before the change; a designation interpreting means for interpreting a designation represented by a combination of the paths of the plurality of designated positions detected by the path detector means based on the acquired magnification; and an operation means for performing an operation based on the designation interpreted by the designation interpreting means wherein the magnification acquisition means comprises a rate of change acquisition means for acquiring a rate of change, and acquires an actual magnification from the acquired magnification and the rate of change acquired by the rate of change acquisition means.