Modular and deformable touch-sensitive surfaces based on time domain reflectometry

Wimmer, Raphael; Baudisch, Patrick

doi:10.1145/2047196.2047264

Cited by 72 publications

(27 citation statements)

References 29 publications

(21 reference statements)

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“…However, some capacitive sensing approaches leverage higher frequencies, e.g., by detuning an RFID antenna [108,124], measuring phase differences of signals capacitively coupled to the human body [231], or measuring reflections caused by capacitive changes along a transmission line [81,105,222].…”

Section: Physical Principles Of Capacitive Sensingmentioning

confidence: 99%

Finding Common Ground

Große-Puppendahl

Holz

Cohn

et al. 2017

Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems

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162

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For more than two decades, capacitive sensing has played a prominent role in human-computer interaction research. Capacitive sensing has become ubiquitous on mobile, wearable, and stationary devices-enabling fundamentally new interaction techniques on, above, and around them. The research community has also enabled human position estimation and whole-body gestural interaction in instrumented environments. However, the broad field of capacitive sensing research has become fragmented by different approaches and terminology used across the various domains. This paper strives to unify the field by advocating consistent terminology and proposing a new taxonomy to classify capacitive sensing approaches. Our extensive survey provides an analysis and review of past research and identifies challenges for future work. We aim to create a common understanding within the field of human-computer interaction, for researchers and practitioners alike, and to stimulate and facilitate future research in capacitive sensing.

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Section: Physical Principles Of Capacitive Sensingmentioning

confidence: 99%

Finding Common Ground

Große-Puppendahl

Holz

Cohn

et al. 2017

Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems

Self Cite

162

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“…The most relevant work is by Schwarz et al [7] who were the first to describe a cord-like multi-DOF input-device to control mobile devices. Wimmer et al [9] explore Time Domain Reflectometry to sense input and present an application that let's users adjust the volume of music by touching the headphone cord at different locations. Nokia published a patent [2] that describes ideas to use cords as an input device.…”

Section: Realted Workmentioning

confidence: 99%

Cord UIs

Schoessler

Leigh

Jagannath³

et al. 2015

Proceedings of the Ninth International Conference on Tangible, Embedded, and Embodied Interaction

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Cord UIs are sensorial augmented cords that allow for simple metaphor-rich interactions to interface with their connected devices. Cords offer a large underexplored space for interactions as well as unique properties and a diverse set of metaphors that make them potentially interesting tangible interfaces. We use cords as input devices and explore different interactions like tying knots, stretching, pinching and kinking to control the flow of data and/or power. We also look at ways to use objects in combination with augmented cords to manipulate data or properties of a device. For instance, placing a clamp on a cable can obstruct the audio signal to the headphones. Using special materials such as piezo copolymer cables and stretchable cords we built five working prototypes to showcase the interactions described in this paper.

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“…However, modulation approaches like codedivision multiple access or frequency-division multiple access can also be found in this domain [13,28]. In order to discern different ways a user touches an object, capacitive sensing technology such as swept-frequency capacitive sensing [15,25] or time-domain reflectometry [36] were employed.…”

Section: Proximity and Grasp Sensing Using Capacitive Couplingmentioning

confidence: 99%

Capacitive near-field communication for ubiquitous interaction and perception

Große-Puppendahl

Herber

Wimmer

et al. 2014

Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing

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Smart objects within instrumented environments offer an always available and intuitive way of interacting with a system. Connecting these objects to other objects in range or even to smartphones and computers, enables substantially innovative interaction and sensing approaches. In this paper, we investigate the concept of Capacitive Near-Field Communication to enable ubiquitous interaction with everyday objects in a short-range spatial context. Our central contribution is a generic framework describing and evaluating this communication method in Ubiquitous Computing. We prove the relevance of our approach by an open-source implementation of a low-cost object tag and a transceiver offering a high-quality communication link at typical distances up to 15 cm. Moreover, we present three case studies considering tangible interaction for the visually impaired, natural interaction with everyday objects, and sleeping behavior analysis.

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Modular and deformable touch-sensitive surfaces based on time domain reflectometry

Cited by 72 publications

References 29 publications

Finding Common Ground

Finding Common Ground

Cord UIs

Capacitive near-field communication for ubiquitous interaction and perception

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