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Detecting multi-touch events in an optical touch-sensitive device using touch event templates

A technology of touch events and templates, which is applied in the optical field of detecting multi-touch events, and can solve problems such as interference

Active Publication Date: 2015-05-20
RAPT IP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Touch events interfere with these beams

Method used

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  • Detecting multi-touch events in an optical touch-sensitive device using touch event templates
  • Detecting multi-touch events in an optical touch-sensitive device using touch event templates
  • Detecting multi-touch events in an optical touch-sensitive device using touch event templates

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Experimental program
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Embodiment Construction

[0038] I. Introduction

[0039] A. Device overview

[0040] figure 1 is a schematic diagram of an optical touch sensitive device 100 according to one embodiment. The optical touch-sensitive device 100 includes a controller 110 , an emitter / detector drive circuit 120 and a touch-sensitive surface assembly 130 . The surface component 130 includes a surface 131 on which touch events are to be detected. For convenience, the area defined by surface 131 may sometimes be referred to as an active area or active surface, even though the surface itself may be a completely passive structure. Assembly 130 also includes emitters and detectors disposed along the periphery of active surface 131 . In this example, there are J emitters labeled Ea through EJ and K detectors labeled Dl through DK. The device also includes a touch event handler 140, which may be part of the controller 110 or as figure 1 The touch event handler is implemented separately as shown. A standardized API may be u...

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PUM

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Abstract

An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device includes multiple emitters and detectors. Each emitter produces optical beams which are received by the detectors. Touch events disturb the optical beams. Touch event templates are used to determine the actual touch events based on which optical beams have been disturbed.

Description

[0001] Cross References to Related Applications [0002] This application is the U.S. Application Serial No. 13 for "Detecting Multitouch Events in an Optical Touch-Sensitive Device Using Touch Event Templates" filed on April 30, 2012 PCT application with priority of / 460,703. This PCT application also claims U.S. Application Serial No. 13 / 460,704 priority. This PCT application also claims U.S. Application Serial No. 13 for "Detecting Multitouch Events in an Optical Touch-Sensitive Device by Combining Beam Information," filed April 30, 2012 / 460,709 priority. [0003] These applications (13 / 460,703, 13 / 460,704, 13 / 460,709) each of them are "Method and Apparatus for Detecting a Multitouch Event in an Optical Touch-Sensitive Device)” is a continuation in part of U.S. Application Serial No. 13 / 059,817; which is “Method and Apparatus for Detecting Multi-Touch Events in an Optical Touch-Sensitive Device” filed on August 7, 2009 (Method and Apparatus for Detecting a Multitouch E...

Claims

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Application Information

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IPC IPC(8): G06F3/042
CPCG06F3/042G06F3/0421G06F2203/04104G06F2203/04109
Inventor O·德拉姆
Owner RAPT IP