METHOD FOR IMPLEMENTING MOUSE ALGORITHM USING TACTILE SENSOR

• US 20100149124A1
• Filed: 08/03/2007
• Published: 06/17/2010
• Est. Priority Date: 07/06/2007
• Status: Abandoned Application

• Current Assignee: Korea Research Institute of Standards and Science
• Original Assignee: Korea Research Institute of Standards and Science
• Inventors: Kim, Min-seok, Choi, Jae-hyuk, Park, Yon-kyu, Kang, Dae-im, Kwon, Hyun-joon, Kim, Jong-ho
• Application Number:
  US12/667,983
• Publication Number:
  US 20100149124A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0414 using force sensing means to determine a position

Abstract

A method for implementing a mouse algorithm using a plurality of pressure sensors is disclosed. The pressure sensors are used to freely move and rotate a mouse cursor in X, Y and Z directions, so that they can be applied as interface units for a slim device such as a mobile phone. The mouse algorithm processes a touch input. The pressure sensors are arranged in a ring shape and provide output values successively varying with magnitudes of forces applied thereto or pressures applied thereto. A moving direction of the mouse cursor is determined depending on a contact point detected through the output values and a moving distance and moving speed of the mouse cursor are determined in proportion to the magnitudes of the forces.

Claims

1. (canceled)

2. A method for implementing a mouse algorithm using a plurality of pressure sensors, the mouse algorithm processing a touch input the pressure sensors being arranged in a ring shape and providing output values successively varying with magnitudes of forces applied thereto or pressures applied thereto, wherein a moving direction of a mouse cursor is determined depending on a contact point detected through the output values and a moving distance and moving speed of the mouse cursor are determined in proportion to the magnitudes of the forces, the method comprising calculating the moving direction and moving distance of the mouse cursor,

wherein the step of calculating the moving direction and moving distance of the mouse cursor comprises:

obtaining force vectors ( . . . , F_i, F_i+1, . . . , F_k, F_k+1, . . . ) having magnitudes ( . . . , |F_i|, |F_i+1|, . . . , |F_k|, |F_k+1|, . . . ) and X-axis angles ( . . . , θ

_i, θ

_i+1, . . . , θ

_k, θ

_k+1, . . . ) from pressure sensors ( . . . , A_i, A_i+1, . . . , A_k, A_k+1, . . . ) around the contact point, respectively;

obtaining differences ( . . . , Δ

F_i, Δ

F_i+1, . . . ) among the obtained force vectors and calculating a force vector (F_max) having a sum (|F_max|) of the magnitudes of the force vectors of the pressure sensors around the contact point and an X-axis angle (θ

_max) from the obtained differences; and

calculating the moving direction and moving distance of the mouse cursor using the calculated force vector (F_max) having the magnitude sum (|F_max|) and the X-axis angle (θ

_max).

5. The method according to claim 2, wherein the step of calculating the moving direction and moving distance of the mouse cursor comprises calculating the moving distance of the mouse cursor based on the magnitude sum or maximum magnitude (|F_max|) and calculating the moving direction of the mouse cursor based on the X-axis angle (θ

_max), or calculating the moving distance of the mouse cursor based on |F_max|cosθ

_max+|F_max|sinθ

_max which is a sum of an X component magnitude and a Y component magnitude of the force vector (F_max) and calculating the moving direction of the mouse cursor based on the X-axis angle (θ

_max).

6. The method according to claim 5, wherein a successive trajectory movement of the mouse cursor is made in various directions through detection of the moving distance and moving direction by the plurality of pressure sensors.

8. The method according to claim 5, further comprising:

additionally providing a click recognition sensor at a center of the plurality of pressure sensor and setting the plurality of pressure sensors as up, down, left and right and rotation direction selection sensors;

if a contact on the click recognition sensor is sensed, recognizing the contact as a click and then opening or closing a file;

if the contact on the click recognition sensor is sensed and a contact on any one of the direction selection sensors is then sensed, performing scrolling in a direction set by the contact-sensed direction selection sensor; and

moving the mouse cursor in a Z direction using a force vector of the click recognition sensor.

9. The method according to claim 6, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors;

setting any one of the additionally provided pressure sensors as a first Z direction sensor to detect a first Z direction movement of the mouse cursor; and

setting another one of the additionally provided pressure sensors facing the first Z direction sensor as a second Z direction sensor to detect a second Z direction movement of the mouse cursor.

10. The method according to claim 6, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors; and

performing a click function to open or close a file on a screen, if a contact on at least one of the additionally provided pressure sensors is sensed.

11. The method according to claim 6, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors; and

setting a specific one of the additionally provided pressure sensors as a click recognition sensor, performing a click function if a contact on the specific sensor is sensed, and performing a scroll function if contacts on the other sensors are sensed.

3. A method for implementing a mouse algorithm using a plurality of pressure sensors, the mouse algorithm processing a touch input, the pressure sensors being arranged in a ring shape and providing output values successively varying with magnitudes of forces applied thereto or pressures applied thereto, wherein a moving direction of a mouse cursor is determined depending on a contact point detected through the output values and a moving distance and moving speed of the mouse cursor are determined in proportion to the magnitudes of the forces, the method comprising calculating the moving direction and moving distance of the mouse cursor,

wherein the step of calculating the moving direction and moving distance of the mouse cursor comprises:

finding a force vector (F_i+1) of an (i+1)th sensor (A_i+1) having a maximum magnitude of force, among pressure sensors around the contact point, and force vectors (F_i and F_i+2) of an ith sensor (A_i) and (i+2)th sensor (A_i+2) located at both sides of the (i+1)th sensor (A_i+1);

calculating a force vector (F_max) having a sum (|F_max|) of magnitudes of the force vectors of the ith sensor, (i+1)th sensor and (i+2)th sensor and an X-axis angle (θ

_max); and

calculating the moving direction and moving distance of the mouse cursor using the calculated force vector (F_max) having the magnitude sum (|F_max|) and the X-axis angle (θ

_max).

12. The method according to claim 3, wherein the step of calculating the moving direction and moving distance of the mouse cursor comprises calculating the moving distance of the mouse cursor based on the magnitude sum or maximum magnitude (|F_max|) and calculating the moving direction of the mouse cursor based on the X-axis angle (θ

_max), or calculating the moving distance of the mouse cursor based on |F_max|cosθ

_max+|F_max|sinθ

_max which is a sum of an X component magnitude and a Y component magnitude of the force vector (F_max) and calculating the moving direction of the mouse cursor based on the X-axis angle (θ

_max).

14. The method according to claim 12, wherein a successive trajectory movement of the mouse cursor is made in various directions through detection of the moving distance and moving direction by the plurality of pressure sensors.

16. The method according to claim 12, further comprising:

additionally providing a click recognition sensor at a center of the plurality of pressure sensors and setting the plurality of pressure sensors as up, down, left and right and rotation direction selection sensors;

if a contact on the click recognition sensor is sensed, recognizing the contact as a click and then opening or closing a file;

if the contact on the click recognition sensor is sensed and a contact on any one of the direction selection sensors is then sensed, performing scrolling in a direction set by the contact-sensed direction selection sensor; and

moving the mouse cursor in a Z direction using a force vector of the click recognition sensor.

18. The method according to claim 14, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors;

setting any one of the additionally provided pressure sensors as a first Z direction sensor to detect a first Z direction movement of the mouse cursor; and

setting another one of the additionally provided pressure sensors facing the first Z direction sensor as a second Z direction sensor to detect a second Z direction movement of the mouse cursor.

20. The method according to claim 14, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors; and

performing a click function to open or close a file on a screen, if a contact on at least one of the additionally provided pressure sensors is sensed.

22. The method according to claim 14, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors; and

setting a specific one of the additionally provided pressure sensors as a click recognition sensor, performing a click function if a contact on the specific sensor is sensed, and performing a scroll function if contacts on the other sensors are sensed.

4. A method for implementing a mouse algorithm using a plurality of pressure sensors, the mouse algorithm processing a touch input, the pressure sensors being arranged in a ring shape and providing output values successively varying with magnitudes of forces applied thereto or pressures applied thereto, wherein a moving direction of a mouse cursor is determined depending on a contact point detected through the output values and a moving distance and moving speed of the mouse cursor are determined in proportion to the magnitudes of the forces, the method comprising calculating the moving direction and moving distance of the mouse cursor,

wherein the step of calculating the moving direction and moving distance of the mouse cursor comprises:

finding a force vector (F_i+1) of an (i+1)th sensor (A_i+1) having a maximum magnitude of force, among pressure sensors around the contact point, and force vectors (F_i and F_i+2) of an ith sensor (A_i) and (i+2)th sensor (A_i+2) located at both sides of the (i+1)th sensor (A_i+1);

obtaining a magnitude distribution function F(θ

)=aθ

+a₁θ

+a₂θ

² by fitting force magnitudes of the ith sensor, (i+1)th sensor and (i+2)th sensor to a quadratic curve;

obtaining an X-axis angle (θ

_max) where the maximum force magnitude is present;

obtaining a force vector (F_max) having a maximum magnitude |F_max| at the angle (θ

_max) from the magnitude distribution function; and

calculating the moving direction and moving distance of the mouse cursor using the obtained force vector (F_max) having the magnitude (|F_max|) and the X-axis angle (θ

_max).

13. The method according to claim 4, wherein the step of calculating the moving direction and moving distance of the mouse cursor comprises calculating the moving distance of the mouse cursor based on the magnitude sum or maximum magnitude (|F_max|) and calculating the moving direction of the mouse cursor based on the X-axis angle (θ

_max), or calculating the moving distance of the mouse cursor based on |F_max|cosθ

_max+|F_max|sinθ

_max which is a sum of an X component magnitude and a Y component magnitude of the force vector (F_max) and calculating the moving direction of the mouse cursor based on the X-axis angle (θ

_max).

15. The method according to claim 13, wherein a successive trajectory movement of the mouse cursor is made in various directions through detection of the moving distance and moving direction by the plurality of pressure sensors.

17. The method according to claim 13, further comprising:

additionally providing a click recognition sensor at a center of the plurality of pressure sensors and setting the plurality of pressure sensors as up, down, left and right and rotation direction selection sensors;

if a contact on the click recognition sensor is sensed, recognizing the contact as a click and then opening or closing a file;

if the contact on the click recognition sensor is sensed and a contact on any one of the direction selection sensors is then sensed, performing scrolling in a direction set by the contact-sensed direction selection sensor; and

moving the mouse cursor in a Z direction using a force vector of the click recognition sensor.

19. The method according to claim 15, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors;

setting any one of the additionally provided pressure sensors as a first Z direction sensor to detect a first Z direction movement of the mouse cursor; and

setting another one of the additionally provided pressure sensors facing the first Z direction sensor as a second Z direction sensor to detect a second Z direction movement of the mouse cursor.

21. The method according to claim 15, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors; and

performing a click function to open or close a file on a screen, if a contact on at least one of the additionally provided pressure sensors is sensed.

23. The method according to claim 15, further comprising:

additionally providing, at the outside of the plurality of pressure sensors, a plurality of pressure sensors; and

setting a specific one of the additionally provided pressure sensors as a click recognition sensor, performing a click function if a contact on the specific sensor is sensed, and performing a scroll function if contacts on the other sensors are sensed.

7. (canceled)