PLAYBACK CONTROL METHOD FOR MULTIMEDIA DEVICE USING MULTI-TOUCH-ENABLED TOUCHSCREEN

• US 20090144623A1
• Filed: 12/02/2008
• Published: 06/04/2009
• Est. Priority Date: 12/03/2007
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: JUNG, Kwang Soo
• Granted Patent: US 9,250,787 B2
• Time in Patent Office: Days
• US Class Current: 715/716
• 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 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A playback control method of a multimedia device is provided for setting playback position and repetitive playback section of a multimedia file playing on the multimedia device intuitively with multi-touch behaviors on a touchscreen. The method includes sensing a multi-touch event on the touchscreen, extracting two contact points of the multi-touch event, determining coordinates of the contact points, calculating a distance between the coordinates, monitoring a variation of the distance, moving a playback position of a current playing multimedia file according to the variation of the distance, and restarting playback of the current playing multimedia file from the playback position when the contact points are released from the touchscreen.

Claims

1. A playback control method for a multimedia device having a touchscreen, comprising:

sensing a multi-touch event on the touchscreen;

extracting two contact points of the multi-touch event;

determining coordinates of the two contact points;

calculating a distance between the coordinates;

monitoring a variation of the distance;

moving a playback position of a current playing multimedia file according to the variation of the distance; and

restarting playback of the current playing multimedia file from the playback position 11 when the contact points are released from the touchscreen.

2. The playback control method of claim 1, further comprising moving a playback position indicator on a progress indication bar according to the movement of the playback position.

3. The playback control method of claim 1, wherein moving a playback position comprises comprising moving the playback position forward in proportion to an amount of increase of the variation of the distance.

4. The playback control method of claim 2, wherein moving a playback position indicator comprises moving the playback position indicator forward on the progress indication bar in proportion to an amount of increase of the variation of the distance.

5. The playback control method of claim 1, wherein moving a playback position comprises moving the playback position backward in proportion to amount of decrease of the variation of the distance.

6. The playback control method of claim 2, wherein moving a playback position indicator comprises moving the playback position indicator backward on the progress indication bar in proportion to an amount of decrease of the variation of the distance.

13. The playback control method of claim 1, further comprising restarting playback of the current playing multimedia file from the playback position when the distance does not change within a specific time period.

7. A playback control method for a multimedia device having a touchscreen, comprising:

sensing a multi-touch event on the touchscreen;

extracting two contact points of the multi-touch event;

determining coordinates of the two contact points;

calculating a distance between the coordinates;

monitoring a variation of the distance;

setting a repetitive playback section of a current playing file according to the variation of the distance; and

playing the repetitive playback section repeatedly when the contact points are released from the touchscreen.

8. The playback control method of claim 7, wherein playing the repetitive playback section comprises moving a playback position indicator on a progress indication bar according to a movement of playback position within the repetitive playback section.

9. The playback control method of claim 7, wherein setting a repetitive playback section comprises:

setting a playback position at which the distance starts varying at a start time point of the repetitive playback section;

moving the playback position in proportion to the variation of the distance; and

setting a playback position at which the distance ends varying as an end time of the repetitive playback section.

10. The playback control method of claim 9, wherein setting a repetitive playback section further comprises moving a playback position indicator on a progress indication bar according to the movement of the playback position.

11. The playback control method of claim 7, wherein setting a repetitive playback section comprises playing the file at normal speed while setting the repetitive playback section.

12. The playback control method of claim 9, wherein setting a repetitive playback section further comprises playing the file at a speed varying according to a movement speed of the playback position.