PORTABLE ELECTRONIC DEVICE AND METHOD OF CONTROLLING A PORTABLE ELECTRONIC DEVICE HAVING A PROXIMITY-SENSING USER INTERFACE

• US 20130201136A1
• Filed: 02/15/2012
• Published: 08/08/2013
• Est. Priority Date: 02/02/2012
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications USA Incorporated (Sony Group Corp.)
• Inventors: Baard, Henrik, Sandblad, Andreas
• Granted Patent: US 9,134,832 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04101 2.5D-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 and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/041661 using detection at multiple resolutions, e.g. coarse and fine scanning; using detection within a limited area, e.g. object tracking window
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Abstract

A portable electronic device comprises a proximity-sensing user interface and a controller. The proximity-sensing user interface is configured to capture position information and distance information. The controller is coupled to the proximity-sensing user interface and is configured to process first distance information (31) captured by the proximity-sensing user interface during a pre-determined touch action, to determine whether a material layer (25) is interposed between the user'"'"'s skin and the proximity-sensing user interface. The controller is configured to selectively set an input mode from a first input mode to a second input mode when the first distance information indicates that no material layer (25) is interposed between the user'"'"'s skin and the proximity-sensing user interface.

Claims

1. A portable electronic device, comprising:

a proximity-sensing user interface configured to capture position information and distance information, the distance information being indicative of a distance at which a user'"'"'s skin is positioned from a surface of the proximity-sensing user interface; and

a controller coupled to the proximity-sensing user interface,

the controller being configured to;

process first distance information captured by the proximity-sensing user interface during a pre-determined touch action, to determine whether a material layer is interposed between the user'"'"'s skin and the proximity-sensing user interface in the pre-determined touch action, and

selectively set an input mode from a first input mode to a second input mode when the first distance information indicates that no material layer is interposed between the user'"'"'s skin and the proximity-sensing user interface in the pre-determined touch action.

2. The portable electronic device of claim 1,

the controller being configured to identify, while the first input mode is active, an input action in which the user'"'"'s skin remains spaced from the proximity-sensing user interface as a touch action when second distance information captured during the input action fulfills first criteria,

the controller being configured to calibrate the first criteria based on the first distance information.

3. The portable electronic device of claim 2,

wherein the first criteria comprise a comparison to a threshold, the controller being configured to set the threshold based on the first distance information.

4. The portable electronic device of claim 3,

wherein the controller is configured to set the threshold based on a minimum distance between the user'"'"'s skin and the surface of the proximity-sensing user interface during the pre-determined touch action.

5. The portable electronic device of claim 3,

wherein the controller is configured to set the threshold based on an averaged distance between the user'"'"'s skin and the surface of the proximity-sensing user interface during the pre-determined touch action.

6. The portable electronic device of claim 3,

wherein the controller is configured to set the threshold based on the first distance information and based on first position information captured by the proximity-sensing user interface during the pre-determined touch action.

7. The portable electronic device of claim 3,

wherein the controller is configured to perform the comparison to the threshold as a function of second position information captured by the proximity-sensing user interface during the input action, the second position information indicating a position of the input action on the surface of the proximity-sensing user interface.

8. The portable electronic device of claim 3,

wherein the controller is configured to adjust the threshold based on the second distance information.

9. The portable electronic device of claim 2,

wherein the controller is configured to selectively set the input mode from the first input mode to the second input mode when the second distance information indicates that the user'"'"'s skin is in direct contact with the surface of the proximity-sensing user interface.

10. The portable electronic device of claim 2,

the controller being configured to identify, while the second input mode is active, the input action as a touch action when the second distance information captured during the input action fulfills second criteria, the second criteria being different from the first criteria.

11. The portable electronic device of claim 1,

the controller being configured to initiate a transition of the portable electronic device to an active state in response to the pre-determined touch action.

12. The portable electronic device of claim 1,

the proximity-sensing user interface comprising a capacitive touch sensor panel overlaid on a display panel.

13. The portable electronic device of claim 12,

the proximity-sensing user interface further comprising a force sensor configured to capture a force applied onto the capacitive touch sensor panel,

the controller being coupled to the force sensor and being configured to control operation of the portable electronic device based on the captured force.

14. A method of controlling a portable electronic device, the portable electronic device having a proximity-sensing user interface, the method comprising:

capturing, by the proximity-sensing user interface, first distance information indicative of a distance at which a user'"'"'s skin is positioned from a surface of the proximity-sensing user interface during a pre-determined touch action;

processing the first distance information to determine whether a material layer is interposed between the user'"'"'s skin and the proximity-sensing user interface in the pre-determined touch action; and

selectively setting an input mode from a first input mode to a second input mode when the first distance information indicates that no material layer is interposed between the user'"'"'s skin and the proximity-sensing user interface in the pre-determined touch action.

15. The method of claim 14,

performed by a portable electronic device comprising

a proximity-sensing user interface configured to capture position information and distance information, the distance information being indicative of a distance at which a user'"'"'s skin is positioned from a surface of the proximity-sensing user interface;

and

a controller coupled to the proximity-sensing user interface,

the controller being configured to;

process first distance information captured by the proximity-sensing user interface during a pre-determined touch action, to determine whether a material layer is interposed between the user'"'"'s skin and the proximity-sensing user interface in the pre-determined touch action, and

selectively set an input mode from a first input mode to a second input mode when the first distance information indicates that no material layer is interposed between the user'"'"'s skin and the proximity-sensing user interface in the pre-determined touch action.