Method and device for position detection
AssigneeEgalax_Empia Technology Inc.
InventorsChin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Abstract
The method and device for position detection are disclosed. Corresponding to a first touch related sensing information, a second touch related sensing information is acquired for determining at least one position. Each position is used separately for determining the position of a centroid according to the first touch related sensing information or the second touch related sensing information.
Claims45
A method for position detection, comprising:
- obtaining a second touch related sensing information corresponding to a first touch related sensing information;
- and
- calculating at least one centroid position based on the second touch related sensing information, a value of each centroid position corresponding to a centroid calculation result obtained after subtracting a base value from all values in a first calculation range of the first touch related sensing information, where the base value is determined according to at least one value of the first touch related sensing information.
A device for position detection, comprising:
- a touch sensitive device including a plurality of sensors;
- and
- a controller for scanning signals of the sensors and generating a second touch related sensing information corresponding to a first touch related sensing information, and calculating at least one centroid position based on the second touch related sensing information, a value of each centroid position corresponding to a centroid calculation result obtained after subtracting a base value from all values in a first calculation range of the first touch related sensing information, where the base value is determined according to at least one value of the first touch related sensing information.
A method for determining centroid positions from touch related sensing information, comprising:
- obtaining a touch related sensing information that includes a plurality of continuous differences;
- determining the position of at least a zero-crossing according to the touch related sensing information for determining at least a position;
- determining a calculation range in the touch related sensing information based on each determined position;
- and
- calculating a centroid position based on each calculation range.
A device for determining centroid positions from touch related sensing information, comprising a controller and a host, which performs at least the following operations:
- obtaining a touch related sensing information that includes a plurality of continuous differences;
- determining at least a position based on the touch related sensing information;
- determining a calculation range in the differential touch related sensing information based on each position;
- and
- calculating a centroid position based on each calculation range.
Dependencies are inferred from the claim text.