APPARATUS AND METHOD FOR PERFORMING ANALOG INPUT OPERATION IN PORTABLE TERMINAL

• US 20080055242A1
• Filed: 09/05/2007
• Published: 03/06/2008
• Est. Priority Date: 09/05/2006
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: HWANG, Min-Woong
• Application Number:
  US11/850,552
• Publication Number:
  US 20080055242A1
• Time in Patent Office: Days
• US Class Current: 345/157
• CPC Class Codes: G06F 3/04892 Arrangements for controlling cursor position based on codes indicative of cursor displacements from one discrete location to another, e.g. using cursor control keys associated to different directions or using the tab key arrangements for controlling cursor position based on coordinate signals G06F3/038

Abstract

An apparatus and method for performing an analog input operation in a portable terminal are provided. The method includes checking first and second coordinates respectively mapped to first and second keys consecutively input; checking an input time difference between the first and second keys; computing a movement direction and a variation of a cursor by referencing to information regarding the first and second coordinates and the input time difference between the first and second keys; and moving the cursor according to the computation result.

Claims

1. A method of performing an analog input operation in a portable terminal, comprising:

checking first and second coordinates respectively mapped to first and second keys consecutively input;

checking an input time difference between the first and second keys;

computing a movement direction and a variation of a cursor by referencing to information regarding the first and second coordinates and the input time difference between the first and second keys; and

moving the cursor according to the computation result.

2. The method of claim 1, wherein the movement direction is the same as a direction of a vector directed from the first coordinate towards the second coordinate.

3. The method of claim 1, wherein the variation is computed according to

$\Delta$





L = s ·

Δ





K Δ





t ,

where s denotes a sensitivity constant, Δ

K denotes a positional variation between the first and second coordinates, and Δ

t denotes the input time difference between the first and second keys.

4. The method of claim 1, further comprising:

checking the first and second coordinates to determine whether the two coordinates are identical; and

performing a double-click operation of the cursor.

5. The method of claim 1, further comprising checking the input time difference between the first and second keys to determine whether the input time difference is less than a predetermined time value.

6. An apparatus for a portable terminal, comprising:

a keypad for checking two consecutive key inputs generated by a user;

a coordinate-information checking unit for checking coordinates corresponding to the two key inputs;

a cursor movement operator for computing a movement direction and a variation of a cursor by referring to information regarding the coordinates and an input time difference between the two key inputs; and

a controller for controlling the cursor so that the cursor moves according to the computed movement direction and the variation.

7. The apparatus of claim 6, wherein the movement direction is the same as a direction of a vector formed by the coordinates.

8. The apparatus of claim 6, wherein the variation is computed according to

$\Delta$





L = s ·

Δ





K Δ





t ,

where s denotes a sensitivity constant, Δ

K denotes a positional variation between coordinates corresponding to the two key inputs, and Δ

t denotes the input time difference between the two key inputs.

9. The apparatus of claim 6, wherein the controller allows a double-clink operation of the cursor when the coordinates corresponding to the two key inputs are identical.

10. The apparatus of claim 6, wherein the controller checks the input time difference between the two key inputs, and, if the input time difference is less than a predetermined time value, allows the cursor to be moved.

11. A portable terminal for performing an analog input operation comprising:

means for checking first and second coordinates respectively mapped to first and second keys consecutively input;

means for checking an input time difference between the first and second keys;

means for computing a movement direction and a variation of a cursor by referencing to information regarding the first and second coordinates and the input time difference between the first and second keys; and

means for moving the cursor according to the computation result.

12. A portable terminal of claim 11, wherein the variation is computed according to

$\Delta$





L = s ·

Δ





K Δ





t ,

where s denotes a sensitivity constant, Δ

K denotes a positional variation between the first and second coordinates, and Δ

t denotes the input time difference between the first and second keys.

13. A method of performing an analog input operation in a portable terminal, comprising:

computing a movement, direction and a variation of a cursor by referencing to information regarding a first coordinate and a second coordinate and an input time difference between a first key and a second key; and

moving the cursor according to the computation result.

14. The method of claim 13, wherein the variation is computed according to

$\Delta$





L = s ·

Δ





K Δ





t ,

where s denotes a sensitivity constant, Δ

K denotes a positional variation between the first and second coordinates, and Δ

t denotes the input time difference between the first and second keys.

15. A computer-readable recording medium having recorded thereon a program for performing an analog input operation, comprising:

a first code segment, checking first and second coordinates respectively mapped to first and second keys consecutively input;

a second code segment, checking an input time difference between the first and second keys;

a third code segment, computing a movement direction and a variation of a cursor by referencing to information regarding the first and second coordinates and the input time difference between the first and second keys; and

a fourth code segment, moving the cursor according to the computation result.

16. The computer-readable recording medium having recorded thereon a program of claim 15, wherein the movement direction is the same as a direction of a vector directed from the first coordinate towards the second coordinate.

17. The computer-readable recording medium having recorded thereon a program of claim 15, wherein the variation is computed according to

$\Delta$





L = s ·

Δ





K Δ





t ,

where s denotes a sensitivity constant, Δ

K denotes a positional variation between the first and second coordinates, and Δ

t denotes the input time difference between the first and second keys.

18. The computer-readable recording medium having recorded thereon a program of claim 15, further comprising:

a fifth code segment, checking the first and second coordinates to determine whether the two coordinates are identical; and

a sixth code segment, performing a double-click operation of the cursor.

19. The computer-readable recording medium having recorded thereon a program of claim 15, further comprising:

a seventh code segment, checking the input time difference between the first and second keys to determine whether the input time difference is less than a predetermined time value.