Method for preventing touch misrecognition, machine-readable storage medium, and portable terminal

Patent metadata

Field	Value
Publication number	US-9600118-B2
Application number	US-201313772845-A
Country	US
Kind code	B2
Filing date	Feb 21, 2013
Priority date	Feb 22, 2012
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A method for preventing a touch misrecognition includes counting a total number of touch detection values of a touch panel which is greater than or equal to a first threshold value; comparing the total number of touch detection values with a second threshold value; and when the total number of the touch detection values is greater than or equal to the second threshold value, determining that bending of the touch panel has occurred.

First claim

What is claimed is:

1. A method for detecting bending in a touch panel, the method comprising:
counting a total number of sensing points having differences which are greater than or equal to a first threshold value by comparing a difference between a measured detection value of each sensing point and an offset value for each sensing point to the first threshold value;
comparing the total number of the sensing points with a second threshold value;
when the total number of the compared sensing points is greater than or equal to the second threshold value, determining that bending of the touch panel has occurred; and
when determining that the bending of the touch panel has occurred, updating offset values for the sensing points of the touch panel by setting each offset value based on a corresponding measured detection value.

2. The method of claim 1 , wherein a plurality of sensing points of the touch panel are disposed in a matrix structure, and the detection values are created by the sensing points arranged in a preset row among the plurality of sensing points.

3. The method of claim 2 , wherein the detection values are pressure values representing a touch.

4. The method of claim 1 , wherein the first threshold value is greater than a touch threshold for identifying a touch.

5. The method of claim 1 , wherein previous offset values applied to previous detection values of the sensing points are different from each other.

6. A non-transitory machine-readable storage medium for recording a program for executing a method of detecting bending in a touch panel, the method comprising:
counting a total number of sensing points having differences which are greater than or equal to a first threshold value by comparing a difference between a measured detection value of each sensing point and an offset value for each sensing point to the first threshold value;
comparing the total number of the sensing points with a second threshold value;
when the total number of the compared sensing points is greater than or equal to the second threshold value, determining that bending of the touch panel has occurred; and
when determining that the bending of the touch panel has occurred, updating offset values for the sensing points of the touch panel by setting each offset value based on a corresponding measured detection value.

7. The non-transitory machine-readable storage medium of claim 6 , wherein the first threshold value is greater than a touch threshold for identifying a touch.

8. The non-transitory machine-readable storage medium of claim 6 , wherein previous offset values applied to previous detection values of the sensing points are different from each other.

9. A flexible portable terminal comprising:
a display unit configured for displaying an image;
a touch panel configured for outputting detection values; and
a control unit configured for:
counting a total number of sensing points having differences which are greater than or equal to a first threshold value by comparing a difference between a measured detection value of each sensing point and an offset value for each sensing point to the first threshold value;
comparing the total number of the sensing points with a second threshold value;
when the total number of the compared sensing points is greater than or equal to the second threshold value, determining that bending of the touch panel has occurred; and
when determining that the bending of the touch panel has occurred, updating offset values for the sensing points of the touch panel by setting each offset value based on a corresponding measured detection value.

10. The flexible portable terminal of claim 9 , wherein a plurality of sensing points of the touch panel are disposed in a matrix structure, and the detection values are created by the sensing points arranged in a preset row among the plurality of sensing points.

11. The flexible portable terminal of claim 10 , wherein the detection values are pressure values representing a touch.

12. The flexible portable terminal of claim 9 , wherein the first threshold value is greater than a touch threshold for identifying a touch.

13. The flexible portable terminal of claim 9 , wherein previous offset values applied to previous detection values of the sensing points are different from each other.

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Park Kyung-Wan
• Kang Seok-Myong
• Seo Ho-Seong
• Jung Dae-Kwang
• Jung Ji-Hyun
• Cho Shi-Yun
• Choi Youn-Ho

Classifications

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• G06F3/047 Primary

  using sets of wires, e.g. crossed wires · CPC title

• G06F3/0418 Primary

  for error correction or compensation, e.g. based on parallax, calibration or alignment · CPC title

• G06F3/04146 Primary

  using pressure sensitive conductive elements delivering a boolean signal and located between crossing sensing lines, e.g. located between X and Y sensing line layers · CPC title

• G06F3/04186

  Touch location disambiguation · CPC title