Resistant film pressure sensitivity type digitizer circuit constant presumption manner

摘要

PROBLEM TO BE SOLVED: To provide the method for finding an index indicating dynamic characteristics of a pressure-sensitive resistance film digitizer in two-layered structure.;SOLUTION: The pressure-sensitive resistance film digitizer in two-layered structure is regarded as an equivalent circuit of a main resistor 204a, a 2nd resistor 202, and inter-film capacitors 211 and 212 between the main and 2nd resistor; and step response is observed by applying a ground-level potential (0 V) to one terminal 206 and a step input to the other terminal 205 through the resistance and compared with the logically calculated value to estimate the circuit constant.;COPYRIGHT: (C)2000,JPO