69‐4: Invited Paper: A Programmable Capacitive Imaging Technique Using Multiple Sigma‐Delta Modulators for High SNR Touch Sensor and Pen

69‐4: Invited Paper: A Programmable Capacitive Imaging Technique Using Multiple Sigma‐Delta Modulators for High SNR Touch Sensor and Pen

A capacitive sensing technique based on sigma‐delta modulation is presented. This architecture creates multi‐frequency drive and sense signals with high SNR. It enables concurrent and simultaneous self‐capacitive touch, mutual‐capacitive touch and capacitive pen.

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Veröffentlicht in:SID International Symposium Digest of technical papers 2018-05, Vol.49 (1), p.926-929
Hauptverfasser: Morrison, Gerald D., Gray, Patrick Troy, Seger, Rick
Format: Artikel
Sprache:eng
Schlagworte:
Active Pen
Capacitive Imaging
Capacitive Touch Sensor
Delta modulation
Modulators
Three-dimensional Pressure
Touch
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Beschreibung
Zusammenfassung:A capacitive sensing technique based on sigma‐delta modulation is presented. This architecture creates multi‐frequency drive and sense signals with high SNR. It enables concurrent and simultaneous self‐capacitive touch, mutual‐capacitive touch and capacitive pen.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.12204