Sensing device
AssigneeNuvoton Technology Corporation
InventorCheng-Chih WANG
Life of this patent
Estimating the term…
Abstract
A sensing device includes a comparator, a first switch, a second switch, and a controller. The comparator includes a first input end and a second input end. An end of the first switch is connected to one of a first touch electrode and a second touch electrode that are complementary. An end of the second switch is selectively connected to the second touch electrode. When the first touch electrode and the second touch electrode are touched, the controller controls the first switch to connect the first input end and the first touch electrode, controls the second switch to connect the second input end and the second touch electrode, and calculates a first touch position of the first touch electrode and the second touch electrode.
Claims10
A sensing device, comprising:
- a comparator comprising a first input end and a second input end;
- a first switch, an end of the first switch being connected to the first input end, the other end of the first switch being connected to one of a first touch electrode and a second touch electrode which are complementary;
- a second switch, an end of the second switch being connected to the second input end, the other end of the second switch being selectively connected to the second touch electrode;
- and
- a controller configured to control the first switch and the second switch;
- wherein when the first touch electrode and the second touch electrode are touched, the controller controls the first switch to connect the first input end with the first touch electrode, controls the second switch to connect the second input end with the second touch electrode, and calculates a first touch position of the first touch electrode and the second touch electrode.
A sensing method, comprising:
- controlling a first switch by a controller to connect a first input end of a comparator with one of a first touch electrode and a complementary second touch electrode, and controlling a second switch to selectively connect a second input end of the comparator with the second touch electrode;
- and
- when the first touch electrode and the second touch electrode are touched, controlling the first switch to connect the first input end with the first touch electrode, controlling the second switch to connect the second input end with the second touch electrode, and calculating a first touch position of the first touch electrode and the second touch electrode.
Dependencies are inferred from the claim text.