3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits

Yingzhe Hu; Tiffany Moy; Liechao Huang; Warren Rieutort-Louis; Josue Sanz Robinson; Sigurd Wagner; James C. Sturm; Naveen Verma

doi:10.1109/CICC.2014.6946090

3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits

Yingzhe Hu, Tiffany Moy, Liechao Huang, Warren Rieutort-Louis, Josue Sanz Robinson, Sigurd Wagner, James C. Sturm, Naveen Verma

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

Abstract

This paper presents a flexible 40×40cm² gesture-sensing sheet for large-area interactive-spaces. The system achieves out-of-plane sensing to 16cm. Self-capacitance readout of individual electrode pixels in a 4×4 array enables multiple gestures to be sensed simultaneously without ghost effects. For high-sensitivity readout, pixel self capacitance is converted to frequency via high-Q LC oscillators formed from amorphous-silicon (a-Si) thin-film transistors (TFTs) and planar inductors patterned directly on flex. Frequency readout is then performed by a CMOS IC. Scalability in the number and scan rate of pixels is achieved by (1) inductively coupling all oscillators to the CMOS IC through a single interface, and (2) reading out all pixels in a row simultaneously in separated frequency channels. With a hand 10 cm in front of a pixel, an SNR of 22dB is achieved at a scan rate of 240Hz and power consumption of 26mW.

Original language	English (US)
Title of host publication	Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479932863
DOIs	https://doi.org/10.1109/CICC.2014.6946090
State	Published - Nov 4 2014
Event	36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014 - San Jose, United States Duration: Sep 15 2014 → Sep 17 2014

Publication series

Name	Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014

Other

Other	36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014
Country/Territory	United States
City	San Jose
Period	9/15/14 → 9/17/14

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/CICC.2014.6946090

Cite this

Hu, Y., Moy, T., Huang, L., Rieutort-Louis, W., Robinson, J. S., Wagner, S., Sturm, J. C., & Verma, N. (2014). 3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits. In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014 Article 6946090 (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2014.6946090

Hu, Yingzhe ; Moy, Tiffany ; Huang, Liechao et al. / 3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits. Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014).

@inproceedings{b2bc8c541e45427b95f83a62fa0c548d,

title = "3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits",

abstract = "This paper presents a flexible 40×40cm2 gesture-sensing sheet for large-area interactive-spaces. The system achieves out-of-plane sensing to 16cm. Self-capacitance readout of individual electrode pixels in a 4×4 array enables multiple gestures to be sensed simultaneously without ghost effects. For high-sensitivity readout, pixel self capacitance is converted to frequency via high-Q LC oscillators formed from amorphous-silicon (a-Si) thin-film transistors (TFTs) and planar inductors patterned directly on flex. Frequency readout is then performed by a CMOS IC. Scalability in the number and scan rate of pixels is achieved by (1) inductively coupling all oscillators to the CMOS IC through a single interface, and (2) reading out all pixels in a row simultaneously in separated frequency channels. With a hand 10 cm in front of a pixel, an SNR of 22dB is achieved at a scan rate of 240Hz and power consumption of 26mW.",

author = "Yingzhe Hu and Tiffany Moy and Liechao Huang and Warren Rieutort-Louis and Robinson, {Josue Sanz} and Sigurd Wagner and Sturm, {James C.} and Naveen Verma",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014 ; Conference date: 15-09-2014 Through 17-09-2014",

year = "2014",

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doi = "10.1109/CICC.2014.6946090",

language = "English (US)",

series = "Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014",

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Hu, Y, Moy, T, Huang, L, Rieutort-Louis, W, Robinson, JS, Wagner, S, Sturm, JC & Verma, N 2014, 3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits. in Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014., 6946090, Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014, Institute of Electrical and Electronics Engineers Inc., 36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014, San Jose, United States, 9/15/14. https://doi.org/10.1109/CICC.2014.6946090

3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits. / Hu, Yingzhe; Moy, Tiffany; Huang, Liechao et al.
Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 6946090 (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - 3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits

AU - Hu, Yingzhe

AU - Moy, Tiffany

AU - Huang, Liechao

AU - Rieutort-Louis, Warren

AU - Robinson, Josue Sanz

AU - Wagner, Sigurd

AU - Sturm, James C.

AU - Verma, Naveen

PY - 2014/11/4

Y1 - 2014/11/4

N2 - This paper presents a flexible 40×40cm2 gesture-sensing sheet for large-area interactive-spaces. The system achieves out-of-plane sensing to 16cm. Self-capacitance readout of individual electrode pixels in a 4×4 array enables multiple gestures to be sensed simultaneously without ghost effects. For high-sensitivity readout, pixel self capacitance is converted to frequency via high-Q LC oscillators formed from amorphous-silicon (a-Si) thin-film transistors (TFTs) and planar inductors patterned directly on flex. Frequency readout is then performed by a CMOS IC. Scalability in the number and scan rate of pixels is achieved by (1) inductively coupling all oscillators to the CMOS IC through a single interface, and (2) reading out all pixels in a row simultaneously in separated frequency channels. With a hand 10 cm in front of a pixel, an SNR of 22dB is achieved at a scan rate of 240Hz and power consumption of 26mW.

AB - This paper presents a flexible 40×40cm2 gesture-sensing sheet for large-area interactive-spaces. The system achieves out-of-plane sensing to 16cm. Self-capacitance readout of individual electrode pixels in a 4×4 array enables multiple gestures to be sensed simultaneously without ghost effects. For high-sensitivity readout, pixel self capacitance is converted to frequency via high-Q LC oscillators formed from amorphous-silicon (a-Si) thin-film transistors (TFTs) and planar inductors patterned directly on flex. Frequency readout is then performed by a CMOS IC. Scalability in the number and scan rate of pixels is achieved by (1) inductively coupling all oscillators to the CMOS IC through a single interface, and (2) reading out all pixels in a row simultaneously in separated frequency channels. With a hand 10 cm in front of a pixel, an SNR of 22dB is achieved at a scan rate of 240Hz and power consumption of 26mW.

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M3 - Conference contribution

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T3 - Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014

BT - Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014

Y2 - 15 September 2014 through 17 September 2014

ER -

Hu Y, Moy T, Huang L, Rieutort-Louis W, Robinson JS, Wagner S et al. 3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits. In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014. Institute of Electrical and Electronics Engineers Inc. 2014. 6946090. (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014). doi: 10.1109/CICC.2014.6946090

3D multi-gesture sensing system for large areas based on pixel self-capacitance readout using TFT scanning and frequency-conversion circuits

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