Patent ID: 8624872

Claim:
A method for detecting a touch trace based on a resistive touch panel, the method comprising: building a look up table comprising a plurality of position coordinates and calibrating rules f corresponding to each of the plurality of position coordinates; receiving a touch trace comprising at least one touch point, wherein if an actual contact area A i of the at least one touch point is a basic contact area A 0 , an actual signal value V i of the at least one touch point is V 0i ; each of the calibrating rules f is used to convert the value V 0i of the at least one touch point of the basic contact area A 0 in the position coordinates to a standard signal value V s , and the converting process is represented by f(V 0i )=V s ; calculating a position coordinate of the at least one touch point, and obtaining the actual signal value V i under the actual contact area A i of the at least one touch point; and querying the calibrating rule f corresponding to the position coordinate of the at least one touch point from the look up table; calibrating the actual signal value V i to a calibrated signal value V′ i represented by f (V i )=V′ i ; and reflecting the actual contact areas A i of the at least one touch point using the calibrated signal value V′ i .