Active pen with tip pressure sensor
AssigneeAdvanced Silicon SA
InventorsHussein BALLAN, Paolo CELLA, Jean-Daniel CARRARD, Marc PASTRE, Tristan REIMANN
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Abstract
Active position indicator comprising a movable tip element (10) configured to be displaced from an initial position in a displacement direction by a tip displacement depending on the force acting on a tip (3) arranged on a distal end of the tip element (10); a force sensor for detecting a force acting on the tip (3) comprising an elastic element acting on the tip element (10) against the tip displacement; wherein the elastic element is a leaf spring (15).
Claims19
Active position indicator comprising:
- a movable tip element configured to be displaced from an initial position in a displacement direction by a tip displacement depending on the force acting on a tip arranged on a distal end of the tip element;
- a force sensor for detecting a force acting on the tip, wherein the force sensor comprises an elastic element acting on the tip element against the tip displacement and a converter means for converting the tip displacement of the tip element in an electrical signal by an electronic value depending in the detectable force range of the force sensor on the tip displacement;
- wherein the elastic element is a leaf spring.
Method to detect a force on a tip of an active position indicator comprising the steps:
- detecting in the detectable force range of the method a tip displacement of the tip depending on the force on the tip;
- wherein
- a leaf spring is used to act against the tip displacement caused by the force applied on the tip.
A touch system comprising:
- an active position indicator configured to emit an indicator position signal of a tip;
- a touch device configured to detect the location of the tip of the active position indicator on the basis of the emitted indicator position signal,
- wherein the active position indicator comprises:
- a movable tip element configured to be displaced from an initial position in a displacement direction by a tip displacement depending on the force acting on a tip arranged on a distal end of the tip element;
- a force sensor for detecting a force acting on the tip, wherein the force sensor comprises an elastic element acting on the tip element against the tip displacement and a converter means for converting the tip displacement of the tip element in an electrical signal by an electronic value depending in the detectable force range of the force sensor on the tip displacement;
- wherein the elastic element is a leaf spring.
Dependencies are inferred from the claim text.