Touch screen system with hover and click input methods

A technology of touch screen and touch area, which is applied in the input/output process of data processing, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2012-08-22
NEXT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the disadvantages is that touches are usually registered just before the finger or object actually touches the touchscreen surface

Method used

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  • Touch screen system with hover and click input methods
  • Touch screen system with hover and click input methods
  • Touch screen system with hover and click input methods

Examples

Experimental program
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Embodiment Construction

[0024] The present invention provides touch screen systems and methods for approximating at least four interaction states including: (1) out-of-bounds state; (2) tracking state; (3) selection state and (4) dragging state. The systems and methods of the present invention provide the ability to identify between multiple interaction states regardless of the orientation of the user's finger, stylus, or other touching object, and without relying on direct sensing of touch pressure or area. Exemplary embodiments of the present invention will be described hereinafter with reference to the accompanying drawings, in which like reference numerals denote like elements.

[0025] figure 1is a diagram of an exemplary touch screen system 100 . As used herein, the term "touch screen system" means the touch screen 110 and hardware and / or software elements that provide touch detection functionality. Exemplary touch screen system 100 is shown adjacent to display device (ie, video monitor) 190 ...

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Abstract

A touch screen system that can approximate tracking and dragging states regardless of the user's orientation and without reliance on direct sensing of touch pressure or area. A first detector generates a signal representing a first image of an object interacting with the touch screen. A second detector generates a signal representing a second image of the object. A signal processor processes the first signal to determine approximated coordinates of a first pair of outer edges of the object and processes the second signal to determine approximated coordinates of a second pair of outer edges ofthe object. The signal processor then calculates an approximated touch area based on the approximated coordinates of the first pair of outer edges and the approximated coordinates of the second pair of outer edges of the object. If the approximated touch area is less than or equal to a threshold touch area, the signal processor determines that the object interacting with the touch screen indicates a tracking state. If the approximated touch area is greater than the threshold touch area, the signal processor determines that the object interacting with the touch screen indicates a selection state. The threshold touch area may be established by calibrating the touch screen system when the object interacting with the touch screen is known to indicate the tracking state.

Description

[0001] related application [0002] This application claims priority to New Zealand Provisional Patent Application No. 554,416, entitled "Touch Screen Using Hover and Click Input Method", filed with the New Zealand Patent Office on April 11, 2007. technical field [0003] The present invention generally relates to touch sensitive screens, also referred to as touch screens. More specifically, the present invention relates to systems and methods utilizing signal processing for optical detection of user interactions with a touch screen, wherein the interactions represent tracking, selection, and dragging operations. Background technique [0004] Prior art touch screen systems can be classified into the following technology groups: Resistive, Surface Capacitive, Bulge Capacitive, Surface Acoustic Wave (SAW), Infrared (IR), Frustrated Total Internal Reflection (FTIR), Optical and Dispersive Signal (bending waves). Each touchscreen technology has its own characteristics, advanta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042
Inventor 约翰·牛顿
Owner NEXT HLDG
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