ELECTRONIC DEVICE, CONTROL METHOD FOR THE SAME, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

• US 20160202840A1
• Filed: 01/06/2016
• Published: 07/14/2016
• Est. Priority Date: 01/09/2015
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ichihara, Atsushi
• Granted Patent: US 9,933,895 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04108 Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/04842 Selection of displayed objects or displayed text elements G06F3/0482 takes precedence
• CPC Class Codes: G06F 3/04847 Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A touch sensor driver circuit drives a capacitive touch sensor to detect the presence of an operation performed with a conductive member and detects a position of the operation. A controller performs processing corresponding to the operation on the touch sensor with the conductive member. In a case where detection of a capacitance greater than or equal to a threshold in an edge area of a sensor area of the capacitive touch sensor and a touch operation in a central area that is the sensor area excluding the edge area occur at the same time, the controller ignores the touch operation.

Claims

1. An electronic device comprising:

a capacitive touch sensor including a sensor area;

a processor configured to perform, upon detection by the capacitive touch sensor of a capacitance increase greater than or equal to a first threshold, processing corresponding to a touched position; and

a controller configured to perform control to restrict the processing corresponding to the touched position in a case where a certain condition is satisfied even when the capacitive touch sensor detects the capacitance increase greater than or equal to the first threshold, the certain condition including a capacitance increase greater than or equal to a second threshold being detected in an edge area of the sensor area of the capacitive touch sensor, the second threshold being less than the first threshold.

2. The electronic device according to claim 1, wherein the certain condition includes a size of an area in which the capacitance increase greater than or equal to the second threshold is detected in the edge area of the sensor area of the capacitive touch sensor being greater than or equal to a certain value.

3. The electronic device according to claim 1, wherein the certain condition includes the capacitance increase greater than or equal to the second threshold being detected continuously from a position where the capacitance increase greater than or equal to the first threshold is detected to a position where the capacitance increase greater than or equal to the second threshold is detected in the edge area of the sensor area of the capacitive touch sensor.

4. The electronic device according to claim 1, wherein in a case where the certain condition is satisfied, the controller performs control to restrict the processing corresponding to the touched position in at least one section, from among a plurality of sections of the capacitive touch sensor, close to the edge area in which the capacitance increase greater than or equal to the second threshold is detected.

5. The electronic device according to claim 1, wherein in a case where the certain condition is satisfied, the controller performs control such that the processor does not perform the processing corresponding to the touched position.

6. The electronic device according to claim 1, wherein in a case where the certain condition is satisfied, the controller performs control such that, if the processing corresponding to the touched position is a first processing, the first processing is not to be performed, and that, if the processing corresponding to the touched position is a second processing, the second processing is to be performed.

7. The electronic device according to claim 6, wherein the first processing is at least one of changing a setting, capturing an image, deleting an image, or transferring data.

8. The electronic device according to claim 6, wherein the second processing is selecting an item.

9. The electronic device according to claim 1, further comprising a warning unit configured to issue a warning in a case where the certain condition is satisfied.

10. The electronic device according to claim 1, wherein the electronic device is a portable device.

11. The electronic device according to claim 1, wherein the electronic device is an image capturing apparatus including an imaging device.

12. A method for controlling an electronic device including a capacitive touch sensor, the method comprising:

performing, upon detection by the capacitive touch sensor of a capacitance increase greater than or equal to a first threshold, processing corresponding to a touched position; and

performing control to restrict the processing corresponding to the touched position in a case where a certain condition is satisfied even when the capacitance increase greater than or equal to the first threshold is detected with the capacitive touch sensor, the certain condition including a capacitance increase greater than or equal to a second threshold being detected in an edge area of a sensor area of the capacitive touch sensor, the second threshold being less than the first threshold.

13. A non-transitory computer-readable storage medium storing computer executable instructions that cause a computer to execute a method for controlling an electronic device including a capacitive touch sensor, the method comprising:

performing, upon detection by the capacitive touch sensor of a capacitance increase greater than or equal to a first threshold, processing corresponding to a touched position; and

performing control to restrict the processing corresponding to the touched position in a case where a certain condition is satisfied even when the capacitance increase greater than or equal to the first threshold is detected with the capacitive touch sensor, the certain condition including a capacitance increase greater than or equal to a second threshold being detected in an edge area of a sensor area of the capacitive touch sensor, the second threshold being less than the first threshold.