DEVICE AND METHOD FOR DETERMINING FUNCTION REPRESENTED BY CONTINUOUS RELATIVE MOTION BETWEEN/AMONG MULTITOUCH INPUTS ON SIGNAL SHIELDING-BASED POSITION ACQUISITION TYPE TOUCH PANEL

• US 20090044988A1
• Filed: 08/17/2007
• Published: 02/19/2009
• Est. Priority Date: 08/17/2007
• Status: Abandoned Application

• Current Assignee: eGalax_eMPIA Technology Inc.
• Original Assignee: eGalax_eMPIA Technology Inc.
• Inventors: HSIEH, TENG WEI, CHANG, CHIN-FU
• Application Number:
  US11/840,532
• Publication Number:
  US 20090044988A1
• Time in Patent Office: Days
• US Class Current: 178/18.10
• 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 3/04166 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 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen
• CPC Class Codes: G06F 3/043 using propagating acoustic waves
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

Described is a device and method for determining a function represented by a specific continuous relative motion between/among multitouch inputs on signal shield-based position acquisition type touch panel. The method comprises the steps of acquiring a minimum and maximum ordinate and abscissa values between/among the multitouch inputs; forming a rectangle based on the minimum and maximum ordinate and abscissa values; monitoring a sequential variation of an contour of the rectangle; and determining a gesture associated with the specific continuous relative motion of the multitouch inputs based on the sequential variation of the rectangle and relating the gesture to the function.

Claims

1. A device for determining a function represented by a specific continuous relative motion between/among multitouch inputs on a signal shield-based position acquisition type touch panel, comprising:

a coordinate acquiring unit acquiring a minimum and maximum ordinate and abscissa values between/among the multitouch inputs;

a determination reference forming unit forming a rectangle based on the minimum and maximum ordinate and abscissa values;

a monitoring unit monitoring a sequential variation of an contour of the rectangle; and

a mapping unit mapping the specific continuous relative motion of the multitouch inputs to one of a plurality of predefined gestures based on the sequential variation of the rectangle and relating the gesture to the function among a plurality of predefined functions.

2. The device as claimed in claim 1, wherein the coordinate acquiring unit further first acquiring an ordinate and abscissa values of each of the multitouch inputs.

3. The device as claimed in claim 1, wherein the mapping unit comprises a storage unit storing a first predefined table specifying a relationship between a plurality groups of predefined continuous relative motion and the plurality of predefined gestures and a second predefined table specifying the plurality of predefined gestures and the plurality of predefined functions and a fuzzy determination unit fuzzily mapping the specific continuous relative motion of the multitouch inputs to the gesture based on the sequential variation of the rectangle by using the first predefined table and looking up the function with respect to the gesture by using the second predefined table.

4. The device as claimed in claim 1, wherein the signal shield-based position acquisition type touch panel comprises a surface acoustic wave (SAW) and an infrared (IR) type touch panels.

5. A method for determining a function represented by a specific continuous relative motion between/among multitouch inputs on a signal shield-based position acquisition type touch panel, comprising the steps of:

acquiring a minimum and maximum ordinate and abscissa values between/among the multitouch inputs;

forming a rectangle based on the minimum and maximum ordinate and abscissa values;

monitoring a sequential variation of an contour of the rectangle; and

fuzzily determining the specific continuous relative motion of the multitouch inputs to a gesture among a plurality of predefined gestures based on the sequential variation of the rectangle and relating the gesture to the function among a plurality of predefined functions.

6. The method as claimed in claim 5, wherein the step of acquiring the minimum and maximum ordinate and abscissa values between/among the multitouch inputs comprises a step of first acquiring an ordinate and abscissa values of each of the multitouch inputs.

7. The method as claimed in claim 5, wherein the step of fuzzily determining the specific continuous relative motion of the multitouch inputs to the gesture and relating the gesture to the function comprises a step of fuzzily mapping the specific continuous relative motion of the multitouch inputs to the gesture based on the sequential variation of the rectangle by using a first predefined table and looking up the function with respect to the gesture by using a second predefined table, the first predefined table specifying a relationship between a plurality groups of predefined continuous relative motion and the plurality of predefined gestures and the second predefined table specifying the plurality of predefined gestures and the plurality of predefined functions.

8. The method as claimed in claim 5, wherein the signal shield-based position acquisition type touch panel comprises a surface acoustic wave (SAW) and an infrared (IR) type touch panels.