Touch sensing method and apparatus using the same
AssigneeHimax Technologies Limited
InventorsJui-Ming Liu, Shen-Feng Tai
Life of this patent
Estimating the term…
Abstract
A touch sensing method adapted for a touch panel is provided. The touch sensing method includes following steps. An average value of touch values generated by a touch object on the touch panel is calculated during a first frame period. An amplitude value of the touch values generated by the touch object on the touch panel is calculated based on the average value during a second frame period. Whether the touch object is a target to be sensed is determined based on the amplitude value. Furthermore, a touch sensing apparatus is also provided.
Claims10
A touch sensing method, adapted for a touch panel, the touch sensing method comprising:
- calculating an average value of touch values generated by a touch object on the touch panel during a first frame period;
- calculating an amplitude value of the touch values generated by the touch object on the touch panel based on the average value during a second frame period, wherein the average value is the same during the first frame period and the second frame period;
- and
- comparing the amplitude value of the touch values to a preset amplitude value to determine whether the amplitude value is larger than the preset amplitude value, so as to determine whether the touch object is a target to be sensed based on the amplitude value,
- wherein the amplitude value of the touch values is one peak-to-peak value of variations of capacitances between the first frame period and the second frame period generated by the touch object on the touch panel.
A touch sensing apparatus, adapted for a touch panel, the touch sensing apparatus comprising:
- a calculation unit calculating an average value of touch values generated by a touch object on the touch panel during a first frame period, and calculating an amplitude value of the touch values generated by the touch object on the touch panel based on the average value during a second frame period, wherein the average value is the same during the first frame period and the second frame period;
- and
- a determination unit determining whether the touch object is a target to be sensed based on the amplitude value, wherein the determination unit determines whether the amplitude value of the touch values is larger than a preset amplitude value to determine whether the touch object is the target to be sensed,
- wherein the amplitude value of the touch values is one peak-to-peak value of variations of capacitances between the first frame period and the second frame period generated by the touch object on the touch panel.
Dependencies are inferred from the claim text.