| 摘要 |
This application provides a touchscreen interference suppression method and apparatus, and a terminal device. In the method, when a touchscreen is in an untouched state, whether a wideband interference signal exists in the touchscreen is detected; and when the wideband interference signal exists, a detection bandwidth of a filter unit is reduced, where a wideband interference signal strength captured by using a smaller detection bandwidth is relatively low, which can reduce impact of the wideband interference signal on a touch sampling signal, and therefore, improve interference immunity of the touchscreen being untouched. In addition, the embodiments provide a manner in which the detection bandwidth of a band-pass filter is reduced to reduce the impact of the wideband interference signal on the touch sampling signal. This manner does not require an increase in a touch threshold determining value, which can ensure touch sensitivity of the touchscreen and can suppress the wideband interference signal. |
