Patent ID: 9665231
Date: 2017-05-30
CPC Classifications: G06F

Claim:
1. A detection system for touch screen, comprising: a touch screen comprising a plurality of parallel driving electrodes and a plurality of parallel detecting electrodes, wherein the driving electrodes and the detecting electrodes cross each other at intersections; a driving circuit, providing a driving signal to one driving electrode or one set of driving electrodes, wherein one driving electrode or one set of driving electrodes are designated as one base electrode or one set of base electrodes, and the others of the driving electrodes not receiving the driving signal are not designated as base electrodes; a detecting circuit, by signals of at least one detecting electrode, generating an evaluated signal for the driving electrodes, to which the driving signal is provided, based on one of a plurality of parameter sets when the driving signal is provided each time; and a control circuit selects one of the parameter sets as an initial parameter set of the base electrode so as to designate the evaluated signal, which is produced by detecting circuit based on the initial parameter set, as a level signal, and the initial parameter set of each one or each set of the non-base electrode is selected from the mentioned parameter set, wherein the evaluated signal of each one or each set of the non-base electrode based on the initial parameter set is the closest one to the level signal comparing to other evaluated signals produced by other parameter sets.