Unterschiede

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--- lehre:ws18:fsm_18ws:group_e [17.01.2019 07:27] – Quelle hinzugefügt wip05257
+++ lehre:ws18:fsm_18ws:group_e [21.03.2019 10:29] – Updated short description ost03246
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 members_            : Paul Winderl, Johannes Dengler, Thomas Oswald
 keywords_           : WIP, measuring, user study, input device, latency
-shortdescription    : This research project examines a way of non-invasive measurement of input device latency. To achieve this, we try to measure the pressure point of a input button and repeat a clicking mechanism to get latency data. After collecting those, we compare the result with an invasive approach that was used in a previous study.
+shortdescription    : Latency measurement is no new research area but has ongoing relevance to users of input devices. As this number is not decreasing, we investigate a new approach. Bockes, Schmid and Wimmer [1] described an invasive way to measure input latency of different types of devices. We pick up their idea by doing the same with a non-invasive approach. Which means, that we focus on pressing a button of USB-connected input-devices to trigger an input-event and measure the time it takes to arrive at the system.
+To obtain the moment of the click-event we capture the timestamp immediately after the stepper motor moved down a beforehand calibrated distance. A second timestamp is saved when the USB-event arrives. Both values subtracted return our calculated input latency.
+This approach will be helpful in research and industrial areas to assess the latency of input devices. We implemented a reliable process to measure latency for a selection of devices and got close to the findings of the invasive approach. However, with our current method, we can't robustly assess all device types with buttons. Further, studies will need to use other means, such as an algorithm for the pressure curve, to reach that goal.
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 A non-invasive approach for measuring input device latency: Method for input device latency measurement without irreversibly damaging the device.
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+This research project examines a way of non-invasive measurement of input device latency. To achieve this, we try to measure the pressure point of a input button and repeat a clicking mechanism to get latency data. After collecting those, we compare the result with an invasive approach that was used in a previous study.
 {{ :lehre:ws18:fsm_18ws:project_image_group_e.jpg?nolink&300 |Experimental Design }}