Information processing apparatus, information processing method, and program storage medium

• US 9,122,347 B2
• Filed: 01/30/2013
• Issued: 09/01/2015
• Est. Priority Date: 02/03/2012
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Ito, Hikaru, Yamazaki, Takeshi
• Primary Examiner(s): Hicks, Charles V
• Application Number:
  US13/754,085
• Publication Number:
  US 20130201160A1
• Time in Patent Office: 944 Days
• Field of Search: 345/178
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04808 Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

In a case where a plurality of touch points touching on a touch panel is detected, a touch point changed from a previous state among the plurality of touch points is determined to be valid, whether a touch point not changed is valid is determined, and information regarding the touch point determined to be valid is recognized as an input.

Claims

1. An information processing apparatus comprising:

a detection unit configured to detect touch points on a touch panel touched by a user;

a determination unit configured to determine, in a case where the detection unit detects a plurality of touch points and a number of touch points detected by the detection unit increases, whether each of a plurality of touch points that is not a most recent touch point among the plurality of touch points detected by the detection unit is valid for a multi-touch operation; and

a recognition unit configured to recognize information regarding the most recent touch point and each touch point determined to be valid by the determination unit as input information.

2. The information processing apparatus according to claim 1, wherein

the determination unit determines that the most recent touch point among the plurality of touch points is valid, and

the recognition unit recognizes information regarding each touch point determined to be valid by the determination unit as input information for a multi-touch operation.

3. The information processing apparatus according claim 1, wherein the determination unit determines, in a case where the detection unit detects a plurality of touch points and a number of touch points detected by the detection unit increases, that among each of the plurality of touch points that is not the most recent touch point, a touch point having a detection period where touching by the user is continuously detected longer than a predetermined period is invalid.

4. An information processing apparatus comprising:

a detection unit configured to detect touch points on a touch panel touched by a user;

a determination unit configured to determine, in a case where the detection unit detects a plurality of touch points and at least one of the touch points detected by the detection unit is detected at a point moved away from a previously touched position, whether each of a plurality of touch points that is not moved by a distance equal to or greater than a predetermined distance among the plurality of touch points detected by the detection unit is valid for multi-touch operation; and

a recognition unit configured to recognize information regarding each touch point moved by the distance equal to or greater than the predetermined distance and each touch point determined to be valid by the determination unit as input information.

5. The information processing apparatus according to claim 4, wherein the determination unit determines, in a case where the detection unit detects a plurality of touch points and at least one of the touch points detected by the detection unit is detected at a point moved away from a previously touched position in direction parallel to the touch panel, whether each of a plurality of touch points that is not moved in direction parallel to the touch panel by the distance equal to or greater than a predetermined distance among the plurality of touch points detected by the detection unit is valid for a multi-touch operation.

6. The information processing apparatus according to claim 4, wherein the determination unit determines, in a case where the detection unit detects a plurality of touch points and at least one of the touched points detected by the detection unit is detected at a point moved away from a previously touched position, that among touch points not moved by the distance equal to or greater than the predetermined distance, a touch point having a detection period where touching by the user is continuously detected longer than a predetermined period is invalid.

7. The information processing apparatus according to claim 4, wherein the determination unit determines that each touch point moved by the distance equal to or greater than the predetermined distance is valid, and the recognition unit recognizes information regarding each touch point determined to be valid by the determination unit as input information for a multi-touch operation.

8. A method for controlling an information processing apparatus, the method comprising:

periodically detecting touch points on a touch panel touched by a user;

determining, in a case where a plurality of touch points is detected by the detecting and a number of detected touch points increases, whether each of a plurality of touch points that is not a most recent touch point among the plurality of detected touch points is valid for a multi-touch operation; and

recognizing information regarding the most recent touch point and each touch point determined to be valid by the determining as input information.

9. The method for controlling the information processing apparatus according to claim 8, wherein,

the determining determines that the most recent touch point among the plurality of touch points is valid, and

the recognizing recognizes information regarding each touch point determined to be valid by the determining as input information for a multi-touch operation.

10. A method for controlling an information processing apparatus, the method comprising:

periodically detecting touch points on a touch panel touched by a user;

determining, in a case where a plurality of touch points is detected by the detecting and at least one of the detected touch points is detected at a point moved away from a touched position during previous detection, whether each of a plurality of touch points that is not moved by a distance equal to or greater than a predetermined distance among the plurality of detected touch points is valid for multi-touch operation; and

recognizing information regarding each touch point moved by the distance equal to or greater than the predetermined distance and each touch point determined to be valid by the determining as input information.

11. The method for controlling the information processing apparatus according claim 10, wherein,

the determining determines, in a case where the detection unit detects a plurality of touch points and at least one of the detected touch points is detected at a point moved away from a touched position during previous detection in direction parallel to the touch panel, whether each of a plurality of touch points that is not moved in direction parallel to the touch panel by the distance equal to or greater than a predetermined distance among the plurality of touch points detected by the detecting is valid for a multi-touch operation.

12. The method for controlling the information processing apparatus according to claim 10, wherein the determining determines, in a case where the detecting detects a plurality of touch points and at least one of the detected touched points is detected at a point moved away from a touch point during previous detection, that among touch points not moved by the distance equal to or greater than the predetermined distance, a touch point having a detection period where touching by the user is continuously detected longer than a predetermined period is invalid.

13. The method for controlling the information processing apparatus according to claim 10, wherein the determining determines that the touch point moved by the distance equal to or greater than the predetermined distance is valid, and the recognizing recognizes information regarding the touch points determined to be valid by the determining as input information for a multi-touch operation.

14. A non-transitory computer readable storage medium storing a program for causing a computer to perform a control method of an information processing apparatus, the control method comprising:

periodically detecting touch points on a touch panel touched by a user;

determining, in a case where a plurality of touch points is detected by the detecting and a number of detected touch points increases, whether each of a plurality of touch points that is not a most recent touch point among the plurality of detected touch points is valid for a multi-touch operation; and

recognizing information regarding the most recent touch point and each touch point determined to be valid by the determining as input information.

15. The non-transitory computer readable storage medium storing the program according to claim 14, wherein,

the determining determines that the most recent touch point among the plurality of touch points is valid, and

the recognizing recognizes information regarding the touch points determined to be valid by the determining as input information for a multi-touch operation.

16. A non-transitory computer readable storage medium storing a program for causing a computer to perform a control method of an information processing apparatus, the control method comprising:

detecting touch points on a touch panel touched by a user;

determining, in a case where the detecting detects a plurality of touch points and at least one of the detected touch points is detected at a point moved away from a touched position during previous detection by a distance equal to or greater than a predetermined distance among the plurality of the detected touch points is valid for multi-touch operation; and

recognizing information regarding each touch point moved by the distance equal to or greater than the predetermined distance and each touch point determined to be valid as input information.

17. The non-transitory computer readable storage medium storing the program according to claim 16, wherein,

the determining determines, in a case where the detecting detects a plurality of touch points and at least one of the detected touch points is detected at a point moved away from a touched position during previous detection in direction parallel to the touch panel, whether each of a plurality of touch points that is not moved in direction parallel to the touch panel by the distance equal to or greater than a predetermined distance among the plurality of touch points detected by the detecting is valid for a multi-touch operation.

18. The non-transitory computer readable storage medium storing the program according to claim 16, wherein the determining determines, in a case where the detecting detects a plurality of touch points and at least one of the detected touch points is detected at a point moved away from a touch during previous detection, that among touch points not moved by the distance equal to or greater than the predetermined distance, a touch point having a detection period where touch by the user is continuously detected longer than a predetermined period is invalid.

19. The non-transitory computer readable storage medium storing the program according to claim 16, wherein the determining determines that the touch point moved by the distance equal to or greater than the predetermined distance is valid, and the recognizing recognizes information regarding the touch points determined to be valid by the determining as input information for a multi-touch operation.

20. An information processing apparatus comprising:

a detection unit configured to detect touch points on a touch panel;

a determination unit configured to determine, in a case where a number of touch points detected by the detection unit increases, whether a touch point that is not a most recent touch point among the plurality of touch points detected by the detection unit is valid for a multi-touch operation; and

a recognition unit configured to recognize information regarding the most recent touch point and each touch point determined to be valid by the determination unit as input information.

21. The information processing apparatus according to claim 20, wherein the information processing apparatus is a portable terminal.

22. An information processing apparatus comprising:

a detection unit configured to detect touch points on a touch panel;

a determination unit configured to determine, in a case where the detection unit detects a plurality of touch points and at least one of the touch points detected by the detection unit is detected at a position moved away from a previously touched position, whether a touch point that is not moved by a distance equal to or greater than a predetermined distance among the plurality of touch points detected by the detection unit is valid for multi-touch operation; and

a recognition unit configured to recognize information regarding each touch point moved by the distance equal to or greater than the predetermined distance and each touch point determined to be valid by the determination unit as input information.

23. The information processing apparatus according to claim 22, wherein the information processing apparatus is a portable terminal.

24. A method for controlling an information processing apparatus, the method comprising:

detecting touch points on a touch panel;

determining, in a case where a number of detected touch points increases, whether a touch point that is not a most recent touch point among the plurality of detected touch points is valid for a multi-touch operation; and

recognizing information regarding the most recent touch point and each touch point determined to be valid as input information.

25. A method for controlling an information processing apparatus, the method comprising:

detecting touch points on a touch panel;

determining, in a case where the detecting detects a plurality of touch points and at least one of the detected touch points is detected at a position moved away from a previously touched position, whether a touch point that is not moved by a distance equal to or greater than a predetermined distance among the plurality of detected touch points is valid for multi-touch operation; and

recognizing information regarding the most recent touch point and each touch point determined to be valid as input information.

26. A non-transitory computer readable storage medium storing a program for causing a computer to perform a control method of an information processing apparatus, the control method comprising:

detecting touch points on a touch panel;

determining, in a case where a number of detected touch points increases, whether a touch point that is not a most recent touch point among the plurality of detected touch points is valid for a multi-touch operation; and

recognizing information regarding the most recent touch point and each touch point determined to be valid as input information.

27. A non-transitory computer readable storage medium storing a program for causing a computer to perform a control method of an information processing apparatus, the control method comprising:

detecting touch points on a touch panel;

determining, in a case where the detecting detects a plurality of touch points and at least one of the detected touch points is detected at a position moved away from a previously touched position, whether a touch point that is not moved by a distance equal to or greater than a predetermined distance among the plurality of detected touch points is valid for multi-touch operation; and

recognizing information regarding the most recent touch point and each touch point determined to be valid as input information.