METHOD OF RECOGNIZING A CONTROL COMMAND BASED ON FINGER MOTION

• US 20130154924A1
• Filed: 08/31/2012
• Published: 06/20/2013
• Est. Priority Date: 12/16/2011
• Status: Active Grant

• Current Assignee: SungKyunKwan University's Research & Business Foundation (SungKyunKwan University)
• Original Assignee: SungKyunKwan University's Research & Business Foundation (SungKyunKwan University)
• Inventors: HONG, Kwang-Seok, OH, Byung Hun
• Granted Patent: US 9,329,627 B2
• Time in Patent Office: Days
• US Class Current: 345/157
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1647 including at least an additional display G06F1/1692 takes precedence
• CPC Class Codes: G06F 1/1654 the display being detachable, e.g. for remote use
• CPC Class Codes: G06F 1/1692 the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

Provided is a method of recognizing a control command based on finger motion involving: (a) obtaining coordinate data of a pointer corresponding to a position of a finger in contact with a touch input device of a mobile terminal; (b) obtaining an input continuance time of the coordinate data, and setting values of timer variables based on the input continuance time; (c) setting logic values of a plurality of command logic variables whose logic values of True or False are based on values of the respective timer variables; and (d) recognizing an operation control command of the pointer based on the respective timer variable values and the command logic variable values.

Claims

1. A method of recognizing a control command based on finger motion, the method comprising:

(a) obtaining coordinate data of a pointer corresponding to a position of a finger in contact with a touch input device of a mobile terminal;

(b) obtaining an input continuance time of the coordinate data, and setting values of timer variables based on the input continuance time;

(c) setting logic values of a plurality of command logic variables whose logic values of True or False are based on values of the respective timer variables; and

(d) recognizing an operation control command of the pointer based on the respective timer variable values and the command logic variable values.

2. The method of claim 1, wherein the respective timer variables are Timer before (Tb), Timer after (Ta) and Timer middle (Tm);

the timer variables Tb, Ta and Tm receive a time value as input; and

values of the respective timer variables Tb, Ta and Tm are compared with a predefined time value to determine a role that the variables Tb, Ta and Tm perform for the operation control command of the pointer.

3. The method of claim 1, wherein each of the timer variable includes a logic value field set to True when a time value is input, and False when no time value is input.

4. The method of claim 1, wherein the command logic variables include Click, D_Click, Drag, and Moving, and the logic values of the command variables Click, D_Click, Drag, and Moving respectively corresponding to a click operation, a double click operation, a drag operation, and a moving operation.

5. The method of claim 1, wherein (b), (c) and (d) have a first state, a second state, a third state and a fourth state according to the values of command logic variables Tb, Ta and Tm, whether or not coordinate data of the pointer is input, and logic values of Click, D_Click, Drag, and Moving.

6. The method of claim 5, wherein, when a logic value of Tb is True, logic values of Tm and Ta are False, and coordinate data of the pointer is not input within a time duration defined in advance as Tb, the first state proceeds to the second state,

a logic value of Drag is set to True, and a logic value of Moving is set to False when two or more pieces of pointer coordinate data are input within the time duration defined in advance as Tb,

if the logic value of Moving has been set to True when input of the time value of Tb is completed, operation control of the pointer is recognized as Moving, and the first state proceeds to the second state, and

if the logic value of Moving has been set to False and the logic value of Drag has been set to True when input of the time value of Tb is completed, operation control of the pointer is recognized as Drag, and the first state proceeds to the second state.

7. The method of claim 5, wherein, when logic values of Tb, Tm and Ta are False, and no coordinate data of the pointer is input, the second state is maintained, and

when coordinate data of the pointer is input, the second state proceeds to the third state.

8. The method of claim 5, wherein, when a logic value of Tb is “

False,”

logic values of Tm and Ta are True, and no coordinate data of the pointer is input or only one piece of coordinate data of the pointer is input within a time duration defined in advance as Tm, a logic value of Click is set to True, and the third state proceeds to the fourth state, and

when two or more pieces of coordinate data of the pointer are input within the time duration defined in advance as Tm, a logic value of Moving is set to True, and the third state proceeds to the first state.

9. The method of claim 5, wherein, when logic values of Tb and Tm are True, and two or more pieces of coordinate data of the pointer are input, a logic value of Click is set to False, a logic value of Moving is set to True, and the fourth state proceeds to the first state,

when one piece of coordinate data of the pointer is input within a time duration defined in advance as Ta, the logic value of Click is set to False, and a logic value of D_Click is set to True,

if the logic value of Click is to True when the time duration defined in advance as Ta elapses, operation control of the pointer is recognized as Click, and

if the logic value of Click is to False when the time duration defined in advance as Ta elapses, operation control of the pointer is recognized as Double Click, and the fourth state proceeds to the first state.

10. The method of claim 2, wherein (c) includes setting a logic value of a command logic variable corresponding to Click when a first time duration set in advance as Ta elapses, and performing no process during the first time duration that has been set as Ta in advance even if data is input.

11. The method of claim 10, wherein (c) includes setting a logic value of a command logic variable corresponding to Drag when 10 or more pieces of data are input during a second time set in advance as Tm, and

setting logic values of command logic variables corresponding to up, down, left and right Moving when less than 10 pieces of data are input.

12. The method of claim 11, wherein (c) includes setting a logic value of a command logic variable corresponding to D_Click when data is input during the second time duration set in advance as Tm.

13. A method of recognizing a control command based on finger motion on a mobile terminal having a display screen and a touch input device, the method comprising:

detecting a finger contact on the touch input device;

determining coordinates of a pointer based on a position of the finger contact; and

recognizing an operation control command based on an input continuance time of the finger contact and a direction of movement of the finger on the touch input device.

14. The method of claim 13, wherein the touch input device is provided on a back surface of the mobile terminal;

and the display screen is provided on a front surface of the mobile terminal

15. The method of claim 13, further comprising:

displaying a pointer on the display screen, wherein the pointer moves on the display screen based on the movement of the finger on the touch input device.

16. The method of claim 13, wherein the operation control command recognized by the mobile terminal includes at least one of:

a click operation, a double click operation, a drag operation, and a moving operation.

17. A mobile terminal comprising a display screen and a touch input device, wherein the mobile terminal is configured to perform the method of claim 13.

18. A non-transitory recording medium, the recording medium storing an instruction that causes a mobile terminal to perform the method of claim 13.