DISPLAY CONTROL APPARATUS HAVING TOUCH PANEL FUNCTION, DISPLAY CONTROL METHOD, AND STORAGE MEDIUM

• US 20140063321A1
• Filed: 08/28/2013
• Published: 03/06/2014
• Est. Priority Date: 08/29/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nabeshima, Rui
• Granted Patent: US 9,313,406 B2
• Time in Patent Office: Days
• US Class Current: 348/333.12
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• 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 3/0485 Scrolling or panning
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: H04N 23/62 Control of parameters via user interfaces

Abstract

A display control apparatus which is capable of preventing incorrect operation against user'"'"'s intent during multi-touch operation. When a touch at one point is detected, and then, plural touches are not detected until any touch at one point is not detected, scrolling is performed in response to the touch at one point leaving a display while moving irrespective of whether a predetermined condition is satisfied. When touches at a plurality of points are detected, and then, a touch at only one point is detected, scrolling is performed in response to moving of the touch at one point while it is continuously detected irrespective of whether the predetermined condition is satisfied. When the predetermined condition is satisfied, and then, the touch leaves the display while moving, scrolling is performed. When the touch at one point leaves the display without satisfying the predetermined condition, scrolling is not performed.

Claims

1. A display control apparatus comprising:

a touch detection unit configured to be capable of detecting at least a touch at one point on a display screen of a display unit; and

a control unit configured to

(a) provide, when said touch detection unit detects a touch at one point, and after that, touches at a plural points are not detected until any touch at one point is not detected, control such that a display object displayed on the display screen is scrolled after the touch at one point leaves the display screen in response to the touch at one point leaving the display screen while moving on the display screen irrespective of whether the touch at one point satisfies a predetermined condition,

(b) provide, when said touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, control such that the display object is scrolled in response to moving of a touch position of the touch at one point while the touch at one point is continuously detected irrespective of whether the touch at one point satisfies the predetermined condition,

(c) provide, when said touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, and when the touch at one point satisfies the predetermined condition, and after that, the touch at one point leaves the display screen while moving on the display screen, control such that the display object is scrolled after the touch at one point leaves the display screen, and

(d) provide, when said touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, and when the touch at one point leaves the display screen without satisfying the predetermined condition, control such that the display object is not scrolled after the touch at one point leaves the display screen.

2. The display control apparatus according to claim 1, wherein when scrolling the display object after a touch leaves the display screen, said control unit provides control such that the display object is scrolled while decreasing a moving speed of the display object with deceleration corresponding to a moving speed of a touch position of the touch immediately before the touch leaves the display screen, and then scrolling of the display object is stopped.

3. The display control apparatus according to claim 1, wherein when scrolling the display object in response to moving of a touch position of a touch at one point while the touch at one point is continuously detected, said control unit provides control such that the display object is scrolled in accordance with a moving distance of the touch position.

4. The display control apparatus according to claim 1, wherein when said touch detection unit detects touches at a plurality of points, said control unit provides control such that processing in accordance with a change in touch positions of the touches at the plurality of points is carried out.

5. The display control apparatus according to claim 4, wherein when said touch detection unit detects touches at a plurality of points, said control unit provides control such that processing in accordance with a change in relative positions of respective touch positions of the touches at the plurality of points is carried out.

6. The display control apparatus according to claim 5, wherein when said touch detection unit detects touches at two points, said control unit provides control such that the display object is enlarged and displayed on the display screen in response to a distance between touch positions of the touches at the two points being increased.

7. The display control apparatus according to claim 5, wherein when said touch detection unit detects touches at two points, said control unit provides control such that the display object is reduced and displayed on the display screen in response to a distance between touch positions of the touches at the two points being decreased.

8. The display control apparatus according to claim 1, wherein when said touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected and the touch at one point satisfies another condition different from the predetermined condition is satisfied, said control unit provides control such that the display object is scrolled in response to moving of the touch position of the touch at one point while the touch at one point is continuously detected.

9. The display control apparatus according to claim 1, wherein irrespective of whether touches at a plurality of points are detected from when said touch detection unit detects a touch at one point to when no touch is detected, if a moving speed of a touch position of a touch immediately before no touch is detected is equal to or lower than a predetermined speed, said control unit provides control such that the display object is not scrolled after no touch is detected.

10. The display control apparatus according to claim 1, wherein the predetermined condition is that a moving distance of a touch position of a touch at one point, when said touch detection unit detects touches at a plurality of points, and after that, the touch at only one point is detected, is equal to or greater than a predetermined distance.

11. The display control apparatus according to claim 1, wherein the predetermined condition is that a touch duration time period of a touch at one point, when said touch detection unit detects touches at a plurality of points, and after that, the touch at only one point is detected, is equal to or greater than a predetermined time period.

12. A control method for a display control apparatus having a display unit that has a display screen and is capable of detecting at least a touch at one point on the display screen, the control method comprising:

control step of

(a) providing, when the touch detection unit detects a touch at one point, and after that, touches at a plural points are not detected until any touch at one point is not detected, control such that a display object displayed on the display screen is scrolled after the touch at one point leaves the display screen in response to the touch at one point leaving the display screen while moving on the display screen irrespective of whether the touch at one point satisfies a predetermined condition,

(b) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, control such that the display object is scrolled in response to moving of a touch position of the touch at one point while the touch at one point is continuously detected irrespective of whether the touch at one point satisfies the predetermined condition,

(c) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, and when the touch at one point satisfies the predetermined condition, and after that, the touch at one point leaves the display screen while moving on the display screen, control such that the display object is scrolled after the touch at one point leaves the display screen, and

(d) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, and when the touch at one point leaves the display screen without satisfying the predetermined condition, control such that the display object is not scrolled after the touch at one point leaves the display screen.

13. A display control apparatus comprising:

a touch detection unit configured to be capable of detecting at least a touch at one point on a display screen of a display unit; and

a control unit configured to

(a) provide, when said touch detection unit detects a touch at one point, and after that, touches at a plural points are not detected until any touch at one point is not detected, control such that a plurality of items displayed on the display screen are scrolled in response to moving of a touch position of the touch at one point while the touch at one point is continuously detected,

(b) provide control such that the plurality of items are scrolled after the touch at one point leaves the display screen in response to the touch at one point leaving the display screen while moving on the display screen, and

(c) provide, when said touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, control such that an item to be selected is changed from a first item to a second item among the plurality of items in accordance with, without scrolling the plurality of items, a touch position of the touch at one point after the touch at one point satisfying a predetermined condition.

14. The display control apparatus according to claim 13, wherein when said touch detection unit detects touches at a plurality of points, said control unit provides control such that processing in accordance with a change in touch positions of the touches at the plurality of points is carried out.

15. The display control apparatus according to claim 14, wherein when said touch detection unit detects touches at two points, said control unit provides control such that an increased number of items are displayed on the display screen in response to a distance between touch positions of the touches at the two points being decreased.

16. A control method for a display control apparatus having a touch detection unit that is capable of detecting at least a touch at one point on a display screen of a display unit, the control method comprising:

control step of

(a) providing, when the touch detection unit detects a touch at one point, and after that, touches at a plural points are not detected until any touch at one point is not detected, control such that a plurality of items displayed on the display screen are scrolled in response to moving of a touch position of the touch at one point while the touch at one point is continuously detected,

(b) providing control such that the plurality of items are scrolled after the touch at one point leaves the display screen in response to the touch at one point leaving the display screen while moving on the display screen, and

(c) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, control such that an item to be selected is changed from a first item to a second item among the plurality of items in accordance with, without scrolling the plurality of items, a touch position of the touch at one point after the touch at one point satisfying a predetermined condition.

17. A non-transitory computer-readable storage medium storing a program for causing a computer to implement a control method for a control method for a display control apparatus having a display unit that has a display screen on which a display object is to be displayed and a touch detection unit that is capable of detecting at least a touch at one point on the display screen, the control method comprising:

control step of

(a) providing, when the touch detection unit detects a touch at one point, and after that, touches at a plural points are not detected until any touch at one point is not detected, control such that a display object displayed on the display screen is scrolled after the touch at one point leaves the display screen in response to the touch at one point leaving the display screen while moving on the display screen irrespective of whether the touch at one point satisfies a predetermined condition,

(b) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, control such that the display object is scrolled in response to moving of a touch position of the touch at one point while the touch at one point is continuously detected irrespective of whether the touch at one point satisfies the predetermined condition,

(c) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, and when the touch at one point satisfies the predetermined condition, and after that, the touch at one point leaves the display screen while moving on the display screen, control such that the display object is scrolled after the touch at one point leaves the display screen, and

(d) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, and when the touch at one point leaves the display screen without satisfying the predetermined condition, control such that the display object is not scrolled after the touch at one point leaves the display screen.

18. A non-transitory computer-readable storage medium storing a program for causing a computer to implement a control method for a control method for a display control apparatus having a display unit that has a display screen and a touch detection unit that is capable of detecting at least a touch at one point on the display screen, the control method comprising:

control step of

(a) providing, when the touch detection unit detects a touch at one point, and after that, touches at a plural points are not detected until any touch at one point is not detected, control such that a plurality of items displayed on the display screen are scrolled in response to moving of a touch position of the touch at one point while the touch at one point is continuously detected,

(b) providing control such that the plurality of items are scrolled after the touch at one point leaves the display screen in response to the touch at one point leaving the display screen while moving on the display screen, and

(c) providing, when the touch detection unit detects touches at a plurality of points, and after that, a touch at only one point is detected, control such that an item to be selected is changed from a first item to a second item among the plurality of items in accordance with, without scrolling the plurality of items, a touch position of the touch at one point after the touch at one point satisfying a predetermined condition.