User Interfaces and Associated Apparatus and Methods

• US 20110310064A1
• Filed: 06/25/2007
• Published: 12/22/2011
• Est. Priority Date: 06/25/2007
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Keski-Jaskari, Turo Hermanni, Karhiniemi, Marko Kalervo
• Application Number:
  US12/666,258
• Publication Number:
  US 20110310064A1
• Time in Patent Office: Days
• US Class Current: 345/178
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• 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

Apparatus for a touch sensor, the apparatus comprising circuitry for processing signaling to determine the detection of touch input, wherein the circuitry for processing is arranged to detect touch input by comparing touch signaling with one or more reference thresholds, and wherein the circuitry for processing is arranged to perform a first touch calibration, following the detection of the first touch, to provide a first reference threshold which compensates for the signaling associated with the first touch, and wherein the circuitry for processing is arranged to detect a subsequent next touch, using the first reference threshold, as the reference threshold for detection of said next subsequent touch.

Claims

1-24. -24. (canceled)

25. An apparatus for a touch sensor, the apparatus comprising:

circuitry for processing signaling to determine the respective locations of multiple concurrent touch inputs, wherein the circuitry for processing is configured to;

perform a first touch calibration, following the detection of a first touch, to provide a first reference threshold which compensates for the signaling associated with the first touch, and

detect the location of a subsequent next concurrent touch, using the first reference threshold, as the reference threshold for detection of the location of said concurrent subsequent touch.

26. The apparatus according to claim 25, wherein the circuitry for processing is configured to perform a second reference calibration, following the detection of the first touch, to provide a second reference threshold which compensates for the signaling associated with the concurrent second touch, and wherein the circuitry for processing is configured to detect a next concurrent third touch, using the second reference threshold, as the reference threshold for detection of said next concurrent third touch.

27. The apparatus according to claim 25, wherein the circuitry for processing is for a touch sensor comprising a plurality of regions defined for a user, and wherein the first touch is associated with user touch of one of the regions defined for a user, and wherein the concurrent second touch is associated with concurrent user touch of another one of the regions defined for a user.

28. The apparatus according to claim 25, wherein the circuitry for processing is for a touch sensor comprising a particular region defined for a user, and wherein the first touch and one or more subsequent concurrent touches are associated with multiple selections using the same region for a user.

29. The apparatus according to claim 25, wherein the first touch is configured to be associated with the provision of a menu of options for user selection, and a subsequent concurrent touch is associated with the selection of one of the menu options.

30. The apparatus according to claim 25, wherein the circuitry for processing signaling is configured to:

detect touch input;

provide additional signaling associated with the detected touch input; and

provide a reference threshold corresponding to said detected touch by compensating for the additional signaling associated with said touch.

31. The apparatus according to claim 30, wherein the circuitry for processing is configured to remove the additional signaling associated with said touch to provide the corresponding reference threshold.

32. The apparatus according to claim 30, wherein:

the circuitry for processing is configured to detect touch input by detecting a reduction in detected capacitance caused by a touch input; and

the additional signaling associated with the detected touch input is configured to be representative of the detected reduction in detected capacitance caused by said touch input.

33. The apparatus of claim 25, wherein the circuitry for processing is configured to detect touch input by detecting a reduction in detected capacitance caused by a touch input.

34. The apparatus of claim 25, wherein the circuitry for processing is configured to:

detect touch input by detecting a reduction in detected capacitance caused by a touch input;

provide additional signaling associated with the detected touch input, the additional signaling being configured to be representative of the detected reduction in detected capacitance caused by said touch input; and

provide a reference threshold corresponding to said detected touch by compensating for the additional signaling associated with said touch.

35. The apparatus according to claim 25, wherein the circuitry for processing is configured to perform an environment calibration to provide an environment reference threshold to be used in the detection of said first touch.

36. The apparatus according to claim 25, wherein the apparatus is for a matrix type touch sensor or a capacitive shunt method touch sensor.

37. The apparatus according to claim 25, wherein the circuitry for providing signaling to determine the detection of touch input comprises first and second mutually displaced dipole electrode pairs, the pairs configured orthogonal to one another, to act as sensors to detect changes in capacitance.

38. The apparatus according to claim 25, wherein the circuitry for providing signaling to determine the detection of touch input comprises a pulse circuit for measuring the capacitance to ground of a plate.

39. The apparatus according to claim 25, comprising a touchpad to provide a surface which can be used in the detection of touch input.

40. An apparatus according to claim 25, wherein the apparatus is a touch sensor, device, or module for a device.

43. A method of assembling an apparatus according to claim 25.

41. A method for determining the locations of multiple concurrent touches using a touch sensor apparatus, wherein the method comprises:

performing a first touch calibration, following the detection of a first touch, to provide a first reference threshold which compensates for the signaling associated with the first touch, and

detecting the location of a subsequent next concurrent touch, using the first reference threshold as the reference threshold for detection of the location of said subsequent concurrent touch.

42. A computer program comprising computer code that is configured to, when run, determine the locations of multiple concurrent touches using a touch sensor, wherein the computer code is configured to perform the steps of:

performing a first touch calibration, following the detection of a first touch, to provide a first reference threshold which compensates for the signaling associated with the first touch, and

detecting the location of a subsequent next concurrent touch, using the first reference threshold as the reference threshold for detection of the location of said concurrent subsequent touch.