Pressure and angle-sensitive stylus device

1. A stylus device for use with an interactive device including a surface that detects input by the stylus device, the stylus device comprising:

a stylus body;

a plurality of stylus head portions each having a type, each of the plurality of stylus head portions being attachable to and removable from the stylus body;

a plurality of sensors;

a compressible pivot located on a longitudinal axis of the stylus device, wherein the compressible pivot allows for movement and angling of a stylus head portion of the plurality of stylus head portions in relation to the stylus body, and wherein the plurality of sensors are arranged around the compressible pivot; and

a control unit, the control unit configured to:

detect the type of the stylus head portion of the plurality of stylus head portions attached to the stylus body through the plurality of sensors and the compressible pivot, wherein a proximity of the compressible pivot to one or more of the plurality of sensors varies based on the type of the stylus head portion of the plurality of stylus head portions;

transmit the detected type of the stylus head portion to the interactive device;

sense a pressure applied to the stylus head portion using the plurality of sensors; and

transmit information relating to the pressure to the interactive device.

2. The stylus device of claim 1 , wherein the plurality of sensors include three pressure sensors arranged in a radially symmetric pattern about the longitudinal axis of the stylus device.

3. The stylus device of claim 1 , wherein the control unit is further configured to determine an angle of the pressure applied to the stylus head portion, and wherein the information includes the angle of the pressure applied to the stylus head portion.

4. The stylus device of claim 1 , wherein in response to attachment of the stylus head portion to the stylus body, the control unit is further configured to calibrate the plurality of sensors.

5. The stylus device of claim 1 , wherein the plurality of sensors are in each of the plurality of stylus head portions, and wherein placements of the compressible pivot and the plurality of sensors within each of the plurality of stylus head portions vary based on the type of each of the plurality of stylus head portions, and wherein the control unit is further configured to detect and transmit the placements of the compressible pivot and the plurality of sensors within each of the plurality of stylus head portions to the interactive device.

6. The stylus device of claim 1 , wherein the control unit is further configured to transmit sensitivities of the plurality of sensors to the interactive device.

7. The stylus device of claim 1 , wherein the control unit is further configured to:

determine a velocity of usage of the stylus device from the plurality of sensors.

8. A method for use by a stylus device in communication with an interactive device including a surface that detects input by the stylus device, the stylus device including a stylus body, a plurality of stylus head portions each having a type, each of the plurality of stylus head portions being attachable to and removable from the stylus body, a plurality of sensors, a compressible pivot located on a longitudinal axis of the stylus device, and a control unit, the method comprising:

detecting, using the control unit, the type of a stylus head portion of the plurality of stylus head portions attached to the stylus body through the plurality of sensors and the compressible pivot, wherein the plurality of sensors are arranged around the compressible pivot located on the longitudinal axis of the stylus device, wherein the compressible pivot allows for movement and angling of the stylus head portion in relation to stylus body, and wherein a proximity of the compressible pivot to one or more of the plurality of sensors varies based on the type of the stylus head portion of the plurality of stylus head portions;

transmitting, using the control unit, the detected type of the stylus head portion to the interactive device;

sensing, using the control unit, a pressure applied to the stylus head portion using the plurality of sensors; and

transmitting, using the control unit, information relating to the pressure to the interactive device.

9. The method of claim 8 further comprising:

determining, using the control unit, an angle of the pressure applied to the stylus head portion, and wherein the information includes the angle of the pressure applied to the stylus head portion.

10. The method of claim 8 further comprising calibrating the plurality of sensors in response to attachment of the stylus head portion to the stylus body.

11. The method of claim 8 , wherein the calibrating the plurality of sensors is based on the detected type of the stylus head portion.

12. The method of claim 8 , wherein the plurality of sensors are in each of the plurality of stylus head portions, and wherein placements of the compressible pivot and the plurality of sensors within each of the plurality of stylus head portions vary based on the type of each of the plurality of stylus head portions, and wherein the method further comprises detecting and transmitting the placements of the compressible pivot and the plurality of sensors within each of the plurality of stylus head portions to the interactive device.

13. The method of claim 8 further comprising

transmitting sensitivities of the plurality of sensors to the interactive device.

14. The method of claim 8 further comprising:

determining a velocity of usage of the stylus device using the plurality of sensors; and

transmitting the velocity of usage of the stylus device to the interactive device.