| 摘要 |
PROBLEM TO BE SOLVED: To provide a control apparatus configured to operate an electrostatic touch panel with scan frequency which is less likely to be affected by external noise.SOLUTION: Frequency measurement units 16a-16c output information on external noise of frequencies F1, F2, F3 available as scan frequency of an electrostatic touch panel 11, or frequencies which are multiples of the above frequencies, by use of receiving signals output from antennas 10a-10c having received the external noise. An analysis unit 171 analyzes the influence of the external noise for each of frequencies F1, F2, F3, by use of the above information. A selection unit 172 selects a frequency which is less affected by the external noise, from the frequencies F1, F2, F3, by use of an analysis of the analysis unit 171.SELECTED DRAWING: Figure 2 |
