Pressure sensitive stylus for a digitizer
First Claim
1. A pressure sensitive stylus for operation with a digitizer sensor comprising:
- a housing;
a writing tip that is movable and recedes toward the housing of the stylus in response to contact pressure applied on the writing tip;
an extremity that is movable together with the writing tip;
a switch comprising;
a first element that is fixed to the extremity;
a second element that is fixed to the housing, wherein the first element and second element are conductive and physical contact between the first element and the second element initiates electrical communication and toggles the switch;
a third element that is fixed to the housing;
a controller configured to detect the electrical communication; and
an resilient element positioned around the extremity, the resilient element including a base surface and at least one protruding surface extending from the base surface, wherein the at least one protruding surface maintains physical contact with the third element during toggling of the switch, and wherein the base surface is configured to move with respect to the third element during the toggling,wherein the resilient element is configured to compress against the third element based on the contact pressure applied on the writing tip; and
wherein the switch is configured to toggle at a pre-defined compressed state of the resilient element.
2 Assignments
0 Petitions
Accused Products
Abstract
A pressure sensitive stylus for operation with a digitizer sensor includes a housing, a writing tip that is movable in response to contact pressure applied on the writing tip, an extremity that is movable together with the writing tip, a switch and an elastomer element positioned around the extremity and in physical contact with at least one of the housing or an element that is fixed to the housing. The switch includes a first element that is fixedly positioned around the extremity and a second element that is fixed to the housing, wherein physical contact between the first element and the second element closes the switch. The writing tip is operable to move in response to the elastomer element compressing against the housing or an element that is fixed to the housing and the switch is operative to toggle at a pre-defined compressed state of the elastomer element.
102 Citations
20 Claims
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1. A pressure sensitive stylus for operation with a digitizer sensor comprising:
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a housing; a writing tip that is movable and recedes toward the housing of the stylus in response to contact pressure applied on the writing tip; an extremity that is movable together with the writing tip; a switch comprising; a first element that is fixed to the extremity; a second element that is fixed to the housing, wherein the first element and second element are conductive and physical contact between the first element and the second element initiates electrical communication and toggles the switch; a third element that is fixed to the housing; a controller configured to detect the electrical communication; and an resilient element positioned around the extremity, the resilient element including a base surface and at least one protruding surface extending from the base surface, wherein the at least one protruding surface maintains physical contact with the third element during toggling of the switch, and wherein the base surface is configured to move with respect to the third element during the toggling, wherein the resilient element is configured to compress against the third element based on the contact pressure applied on the writing tip; and wherein the switch is configured to toggle at a pre-defined compressed state of the resilient element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A pressure sensitive stylus for operation with a digitizer sensor comprising:
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a housing; a writing tip that is movable and recedes toward the housing of the stylus in response to contact pressure applied on the writing tip; an extremity that is movable together with the writing tip; a switch comprising; a first conductive layer fixedly positioned on an element positioned around the extremity; and a second conductive layer facing the first conductive layer, wherein the second conductive layer is fixed to the housing; wherein one of the first conductive layer and the second conductive layer is laminated with a non-conductive material; and an resilient element including a base surface and one or more protruding surfaces extending from the base surface; wherein one of the first conductive layer and the second conductive layer is integrated with the base surface and wherein the one or more protruding surfaces extend from the base surface and toward the other one of the first conductive layer and the second conductive layer and is in physical contact with the other one of the first conductive layer and the second conductive layer while the switch is open and closed; and a controller configured to detect electrical communication between the first conductive layer and the second conductive layer; and wherein physical contact between the first conductive layer and the second layer responsive to compression of the resilient element closes the switch, wherein the physical contact is detected by the controller as a change in capacitance due to an absence of an air gap between the first and second layer.
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Specification