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Characterizing Latency in Touch and Button-Equipped Interactive Systems

Géry Casiez 1, 2, 3, * Thomas Pietrzak 1, 2, 3 Damien Marchal 4, 3 Sébastien Poulmane 2 Matthieu Falce 2 Nicolas Roussel 2, 3 
* Corresponding author
2 MJOLNIR - Computing tools to empower users
Inria Lille - Nord Europe, CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189
Abstract : We present a low cost method to measure and characterize the end-to-end latency when using a touch system (tap la-tency) or an input device equipped with a physical button. Our method relies on a vibration sensor attached to a finger and a photo-diode to detect the screen response. Both are connected to a micro-controller connected to a host computer using a low-latency USB communication protocol in order to combine software and hardware probes to help determine where the latency comes from. We present the operating principle of our method before investigating the main sources of latency in several systems. We show that most of the latency originates from the display side. Our method can help application designers characterize and troubleshoot latency on a wide range of interactive systems.
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Submitted on : Wednesday, September 13, 2017 - 11:59:29 AM
Last modification on : Tuesday, November 22, 2022 - 2:26:16 PM
Long-term archiving on: : Thursday, December 14, 2017 - 1:18:33 PM


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Géry Casiez, Thomas Pietrzak, Damien Marchal, Sébastien Poulmane, Matthieu Falce, et al.. Characterizing Latency in Touch and Button-Equipped Interactive Systems. Proceedings of the ACM Symposium on User Interface Software and Technology (UIST 2017), Oct 2017, Québec, Canada. ⟨10.1145/3126594.3126606⟩. ⟨hal-01586803⟩



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