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US 11,112,888 B2Granted
Pressure sensitive stylus
AssigneeHewlett-Packard Development Company, L.P.
InventorJames Frenock
Life of this patent
Estimating the term…
Abstract
In one implementation, a pressure sensitive stylus may receive, at a controller, drawing area coordinates, a stroke pressure from a voltage generated by a piezoelectric crystal, and a stylus coordinate direction from a plurality of fiber optic sensors, determine a drawing area from a wireless signal frequency corresponding to the drawing area coordinates, determine a drawing mode of a stylus stroke, wherein the drawing mode includes a stylus coordinate direction and a stylus stroke type, and transmit the drawing area and the stylus stroke.
Claims15
A method for a pressure sensitive stylus, comprising:
- receiving at a controller within the pressure sensitive stylus:
- a predetermined voltage that corresponds to a pressure of a stylus stroke applied on a write tip of the pressure sensitive stylus or an erase tip of the pressure sensitive stylus, wherein the write tip of the pressure sensitive stylus is coupled to a first piezoelectric crystal that generates a first voltage when a pressure is applied on the write tip, and the erase tip of the pressure sensitive stylus is coupled to a second piezoelectric crystal that generates a second voltage when a pressure is applied on the erase tip;
- and
- a stylus coordinate direction from a plurality of fiber optic sensors in the pressure sensitive stylus;
- determining, by the controller, a type of the stylus stroke based on whether the predetermined voltage is the first voltage generated by the first piezoelectric crystal or the second voltage generated by the second piezoelectric crystal, wherein the type of the stylus stroke is a write stroke performed by the write tip or an erase stroke performed by the erase tip;
- determining, by the controller, a direction of the stylus stroke based on the stylus coordinate direction;
- and
- transmitting, by the controller, the determined type of the stylus stroke and the determined direction of the stylus stroke.
5 more elements
A pressure sensitive stylus, comprising:
- a trackball located at a first end of the pressure sensitive stylus;
- a first piezoelectric crystal to generate a first voltage corresponding to a pressure of a write stroke applied on the trackball;
- a first fiber optic sensor to sense a first coordinate component of a stylus coordinate direction, wherein the first fiber optic sensor includes a first transmitter and a first receiver;
- an erase head located at a second end of the pressure sensitive stylus;
- a second piezoelectric crystal to generate a second voltage corresponding to a pressure of an erase stroke applied on the eraser head;
- and
- a controller to receive a predetermined voltage corresponding to a pressure of a stylus stroke, determine that the stylus stroke is the write stroke performed by the trackball or the erase stroke performed by the erase head based on whether the predetermined voltage is the first voltage generated by the first piezoelectric crystal or the second voltage generated by the second piezoelectric crystal, and determine a direction of the stylus stroke based on the stylus coordinate direction.
4 more elements
A pressure sensitive stylus comprising:
- a first piezoelectric crystal to generate a first voltage corresponding to a pressure of a write stroke applied on a write tip of the pressure sensitive stylus;
- a second piezoelectric crystal to generate a second voltage corresponding to a pressure of an erase stroke applied on an erase tip of the pressure sensitive stylus;
- a plurality of fiber optic sensors to determine a stylus coordinate direction;
- and
- a controller to:
- receive a predetermined voltage corresponding to a pressure of a stylus stroke,
- determine that the stylus stroke is the write stroke performed by the write tip or the erase stroke performed by the erase tip based on whether the predetermined voltage is the first voltage generated by the first piezoelectric crystal or the second voltage generated by the second piezoelectric crystal, and
- determine a direction of the stylus stroke based on the stylus coordinate direction.
5 more elements
Dependencies are inferred from the claim text.