EP 2332027 A4 20160803 - INTERACTIVE DISPLAYS
Title (en)
INTERACTIVE DISPLAYS
Title (de)
INTERAKTIVE DISPLAYS
Title (fr)
AFFICHAGES INTERACTIFS
Publication
Application
Priority
FI 2008050475 W 20080826
Abstract (en)
[origin: WO2010023348A1] An interactive display (100) is provided by providing a user with a perceivable visible image on an image layer (102) configured to and configured to pass through infrared light, capturing an infrared image through the image layer (102), and detecting (303) from the infrared image contact areas where a pointing object (112) is located at the image layer (102) and casts in the infrared image a corresponding shadow, the shadow comprising a peripheral region corresponding to the shape of the pointing object (112) and a central region surrounded by the peripheral region. The detecting (303) of the contact area is performed under daylight, or corresponding strong and coherent ambient infrared illumination, from at least two of the following characteristics present in the shadow of the pointing in the infrared image: darkness of the shadow; gradient of the darkness of the shadow at the edge region; sharpness of the edge region; and dimensions (310) of the shadow.
IPC 8 full level
G06F 3/042 (2006.01)
CPC (source: EP)
G06F 3/0425 (2013.01)
Citation (search report)
- [XDAYI] WO 2004091956 A2 20041028 - PRYOR TIMOTHY R [CA]
- [IA] JP 2008146203 A 20080626 - SEIKO EPSON CORP
- [YA] US 5483261 A 19960109 - YASUTAKE TAIZO [US]
- [A] EP 0880752 A1 19981202 - THOMSON TRAINING & SIMULATION [GB]
- See references of WO 2010023348A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2010023348 A1 20100304; CN 102132239 A 20110720; CN 102132239 B 20151125; EP 2332027 A1 20110615; EP 2332027 A4 20160803
DOCDB simple family (application)
FI 2008050475 W 20080826; CN 200880130919 A 20080826; EP 08787748 A 20080826