DISPLAY DEVICE AND METHOD FOR CONTROLLING THE SAME

• US 20140055377A1
• Filed: 10/25/2012
• Published: 02/27/2014
• Est. Priority Date: 08/23/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Jihwan
• Granted Patent: US 9,063,610 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 2203/04809 Textured surface identifying touch areas, e.g. overlay structure for a virtual keyboard
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/04182 Filtering of noise external to the device and not generated by digitiser components

Abstract

A display device and a method for controlling the same are disclosed. The method includes providing a first tactile feedback to a first area of a display unit, the first tactile feedback corresponding to texture information of the first area, detecting one or more touch inputs applied to the first area, accumulating attribute information of the touch inputs applied to the first area and storing the accumulated attribute information, updating the texture information of the first area according to the accumulated attribute information, and providing a second tactile feedback corresponding to the updated texture information of the first area.

Claims

1. A method for controlling a display device, comprising:

providing a first tactile feedback to a first area of a display unit, the first tactile feedback corresponding to texture information of the first area;

detecting one or more touch inputs applied to the first area;

accumulating attribute information of the touch inputs applied to the first area and storing the accumulated attribute information;

updating the texture information of the first area according to the accumulated attribute information; and

providing a second tactile feedback corresponding to the updated texture information of the first area.

2. The method according to claim 1, wherein the accumulated attribute information includes information specifying a number of the detected touch inputs.

3. The method according to claim 1, further comprising:

displaying a first image corresponding to the texture information of the first area; and

displaying a second image corresponding to the updated texture information of the first area.

4. The method according to claim 1, wherein the texture information of the first area includes image information and tactile feedback information of the first area.

5. The method according to claim 4, wherein the image information of the first area includes information about color, pattern, texture, and transparency of an image displayed in the first area.

6. The method according to claim 4, wherein the updating of the texture information of the first area comprises updating the image information and the tactile feedback information based on a degree of abrasion of a texture indicated by the texture information of the first area, caused by the touch inputs.

7. The method according to claim 1, further comprising setting texture information of a case of the display device near to the display unit as the texture information of the first area.

8. The method according to claim 7, wherein the updating of the texture information of the first area comprises updating the texture information according to the texture information of the case of the display device and the accumulated attribute information.

9. The method according to claim 7, wherein the setting of the texture information of the case of the display device as the texture information of the first area comprises:

capturing the case of the display device;

detecting a texture of the captured case of the display device; and

setting the detected texture of the case of the display device as the texture information of the first area.

10. The method according to claim 1, further comprising displaying an object in the first area of the display unit, wherein the texture information of the first area is texture information of the object displayed in the first area and the attribute information of the touch inputs applied to the first area is accumulated in conjunction with the object.

11. The method according to claim 10, wherein the updating of the texture information of the first area comprises updating the texture information of the first area in correspondence with the texture information of the object displayed in the first area and the accumulated attribute information of the touch inputs.

12. The method according to claim 10, wherein the object includes a plurality of areas and the first area is one of the plurality of areas.

13. The method according to claim 12, wherein the attribute information of the touch inputs is accumulated and stored respectively for each of the plurality of areas of the object.

14. The method according to claim 1, further comprising displaying a first object and a second object in the first area of the display unit, wherein the first and second objects are displayed at least in a partially overlapped manner, and the texture information of the first object and the second object are updated respectively.

15. The method according to claim 1, wherein the providing of the first tactile feedback comprises controlling the magnitude of frictional force provided by the first tactile feedback according to the texture information of the first area.

16. The method according to claim 1, wherein the providing of the second tactile feedback comprises controlling the magnitude of frictional force provided by the second tactile feedback in inverse proportion to a number of occurrences of the touch inputs.

17. The method according to claim 1, wherein the providing of the first tactile feedback comprises generating the first tactile feedback by an ultrasonic vibration and controlling the magnitude of frictional force provided by the first tactile feedback by changing a frequency and magnitude of the ultrasonic vibration.

18. The method according to claim 1, further comprising sensing an ambient condition of the display device,

wherein the first tactile feedback is provided in correspondence with the texture information of the first area and the sensed ambient condition.

19. The method according to claim 18, wherein the ambient condition includes temperature, humidity, and air pressure.

20. A display device comprising:

a touch-sensitive display unit configured to detect a touch input;

a tactile feedback unit configured to provide a tactile feedback in response to the touch input;

a storage unit configured to store attribute information of the touch input; and

a controller configured to;

provide a first tactile feedback to a first area of the touch-sensitive display unit, the first tactile feedback corresponding to texture information of the first area stored in the storage unit;

detect one or more touch inputs applied to the first area;

accumulate attribute information of the touch inputs applied to the first area;

store the accumulated attribute information in the storage unit;

update the texture information of the first area according to the accumulated attribute information; and

provide a second tactile feedback corresponding to the updated texture information of the first area.