METHOD AND DEVICE FOR DETECTING TOUCH INPUT

• US 20150338947A1
• Filed: 07/28/2015
• Published: 11/26/2015
• Est. Priority Date: 08/21/2009
• Status: Abandoned Application

• Current Assignee: G2touch Co Ltd
• Original Assignee: Sung Ho Lee
• Inventors: LEE, Sung Ho
• Application Number:
  US14/811,066
• Publication Number:
  US 20150338947A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 2203/04806 Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
• CPC Class Codes: G06F 2203/04808 Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

Provided is a touch input detection method that detects a contact or approach of a touch input means (90) such as a finger of a human body, an electric conductor or a touch pen on a touch panel (10) and produces an input signal. The touch input detection method includes the steps of: (a) detecting a first touch input; (b) calculating an area where the first touch input has been detected; (c) detecting a second touch input that occurs at a predetermined time interval after occurrence of the first touch input; (d) calculating an area where the second touch input has been detected; and (e) judging a change in the areas from the first touch input to the second touch input to thus produce a zooming signal. Accordingly, a zooming signal is produced according to a change in an area of a touch input, to thus implement a zoom gesture very simply, to also realize the zoom gesture with only one finger, and to thereby achieve a touch input operation compactly.

Claims

1. A touch input detection device that detects a contact or approach of a touch input means (90) such as a finger of a human body, an electric conductor or a touch pen on a touch panel (10) and produces an input signal, the touch input detection device comprising:

an area calculator (80) that calculates an area of a corresponding touch input region at a point in place where the touch input has been detected; and

a zooming signal generator (85) that judges a change in the area of the touch input that has been calculated in the area calculator (80) according to lapse of time,

wherein the touch panel (10) is installed in the upper portion of a display device.