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dc.contributor.authorDu, Lien_US
dc.contributor.authorLiu, Chun-Chenen_US
dc.contributor.authorZhang, Yanen_US
dc.contributor.authorLi, Yileien_US
dc.contributor.authorDu, Yuanen_US
dc.contributor.authorKuan, Yen-Chengen_US
dc.contributor.authorChang, Mau-Chung Franken_US
dc.date.accessioned2018-08-21T05:53:12Z-
dc.date.available2018-08-21T05:53:12Z-
dc.date.issued2018-02-01en_US
dc.identifier.issn0278-0070en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TCAD.2017.2702630en_US
dc.identifier.urihttp://hdl.handle.net/11536/144395-
dc.description.abstractTouch sensing has been widely implemented as a main methodology to bridge human and machine interactions. The traditional touch sensing range is 2-D and therefore limits the user experience. To overcome these limitations, we propose a novel 3-D contactless touch sensing called Airtouch system, which improves user experience by remotely detecting single/multi-finger position. A single layer touch panel with triangle-shaped electrodes is proposed to achieve multitouch detection capability as well as manufacturing cost reduction. Moreover, an oscillator-based-capacitive touch sensing circuit is implemented as the sensing hardware with the bootstrapping technique to eliminate the interchannel coupling effects. To further improve the system accuracy, a grouping algorithm is proposed to group the useful channels' data and filter out hardware noise impact. Finally, improved algorithms are proposed to eliminate the fringing capacitance effect and achieve accurate finger position estimation. EM simulation proved that the proposed algorithm reduced the maximum systematic error by 11 dB in the horizontal position detection. The proposed system consumes 2.3 mW and is fully compatible with existing mobile device environments. A prototype is built to demonstrate that the system can successfully detect finger movement in a vertical direction up to 6 cm and achieve a horizontal resolution up to 0.6 cm at 1 cm finger-height. As a new interface for human and machine interactions, this system offers great potential in finger movement detection and gesture recognition for small-sized electronics and advanced human interactive games for mobile device.en_US
dc.language.isoen_USen_US
dc.subject3-Den_US
dc.subjectbootstrappingen_US
dc.subjectcorrelated double sampling (CDS)en_US
dc.subjectfinger positionen_US
dc.subjectgesture recognitionen_US
dc.subjecthuman machine interactionen_US
dc.subjectinterchannel couplingen_US
dc.subjectmobile deviceen_US
dc.subjecttouchscreenen_US
dc.titleA Single Layer 3-D Touch Sensing System for Mobile Devices Applicationen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TCAD.2017.2702630en_US
dc.identifier.journalIEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMSen_US
dc.citation.volume37en_US
dc.citation.spage286en_US
dc.citation.epage296en_US
dc.contributor.department交大名義發表zh_TW
dc.contributor.departmentNational Chiao Tung Universityen_US
dc.identifier.wosnumberWOS:000422948500002en_US
Appears in Collections:Articles