Paper Info
Title
uTouch: sensing touch gestures on unmodified LCDs
Abstract
Current solutions for enabling touch interaction on existing non-touch LCD screens require adding additional sensors to the interaction surface. We present uTouch, a system that detects and classifies touches and hovers without any modification to the display, and without adding any sensors to the user. Our approach utilizes existing signals in an LCD that are amplified when a user brings their hand near or touches the LCD's front panel. These signals are coupled onto the power lines, where they appear as electromagnetic interference (EMI) which can be sensed using a single device connected elsewhere on the power line infrastructure. We validate our approach with an 11 user, 8 LCD study, and demonstrate a real-time system.
Year
DOI
Venue
2013
10.1145/2470654.2481356
CHI
Keywords
Field
DocType
electromagnetic interference,additional sensor,lcd study,unmodified lcds,power line infrastructure,touch gesture,power line,non-touch lcd screen,current solution,real-time system,enabling touch interaction,interaction surface,lcd,touch,emi,capacitive sensing
Computer science,Gesture,Electromagnetic interference,Capacitive sensing,Electric power transmission,Liquid-crystal display,Front panel,Computer hardware,EMI
Conference
Citations 
PageRank 
References 
8
0.51
5
Authors
4
Name
Order
Citations
PageRank
Keyu Chen124214.60
Gabe Cohn227917.41
Sidhant Gupta397252.23
Shwetak N. Patel42967211.74