Expressive pen
A pen which is able to modulate the trace of the pen in response to a sensory signal of the user, such as for example skin conductance or respiration. The sensory signals represent the mood of the user. By changing the trace of the pen, a change in mood of the user can be expressed.
1. A writing instrument comprising:
a writing shaft;
a sensing device for recording at least one sensory signal related to a physiological condition of a user that is indicative of a mood of the user;
an actuator arranged to modulate a trace of the writing instrument depending on the at least one recorded sensory signal.
2. The writing instrument of claim 1 , wherein the actuator is arranged to determine the width of the trace.
3. The writing instrument of claim 1 , wherein the actuator is arranged to adjust the colour of the trace.
4. The writing instrument of claim 1 , wherein the actuator is arranged to adjust the continuity of the trace.
5. The writing instrument of claim 1 , wherein the sensing device is embedded on the writing shaft.
6. The writing instrument of claim 1 , wherein the sensing device comprises a pressure transducer embedded on the writing shaft to monitor the force exerted thereon by the user during the writing activity.
7. The writing instrument of claim 1 , wherein the writing instrument comprises at least one ink reservoir.
8. The writing instrument of claim 7 , wherein the writing instrument comprises a plurality of ink reservoirs each comprising a specific colour.
9. The writing instrument of claim 8 , wherein the actuator is arranged to eject ink out of one outlet corresponding to a specific ink reservoir.
10. The writing instrument of claim 8 , wherein the actuator comprises a plurality of micro valves.
11. The writing instrument of claim 7 , wherein the actuator comprises an inkjet element for ejecting ink out of the writing instrument.
12. The writing instrument of claim 7 , wherein the writing instrument comprises a flexible nozzle and wherein said actuator is arranged to deform the outlet of the nozzle.
13. The writing instrument of claim 1 , wherein the sensory signal is selected from the group comprising heart rate, EEG, Surface EMG, GSR/skin conductance, respiration, blood pressure, skin temperature and finger pressure.
14. A computer device comprising:
a stylus;
a receiver for receiving at least one sensory signal related to a physiological condition of a user that is indicative of a mood of the user of the stylus;
a processor arranged to modulate a trace of the stylus depending on the at least one sensory signal.
15. The writing instrument of claim 14 , wherein the sensory signal is selected from the group comprising heart rate, EEG, Surface EMG, GSR/skin conductance, respiration, blood pressure, skin temperature and finger pressure.
16. Method of writing comprising:
recording at least one sensory signal related to a physiological condition of a user that is indicative of a mood of the user by means of a writing instrument comprising a sensing device;
modulating a trace of the writing instrument depending on the at least one recorded sensory signal.
17. The writing instrument of claim 16 , wherein the sensory signal is selected from the group comprising heart rate, EEG, Surface EMG, GSR/skin conductance, respiration, blood pressure, skin temperature and finger pressure.