A 500 dpi capacitive-type CMOS fingerprint sensor with pixel-level adaptive image enhancement scheme

Kwang Hyun Lee, Euisik Yoon

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

A 500dpi capacitive-type CMOS fingerprint sensor with pixel-level adaptive image enhancement scheme is discussed. A virtually-grounded metal shield effectively suppresses the parasitic capacitances without extra circuits and a configurable diffusion network is used to generate a adaptive local threshold level for pixel-level image enhancement. Capacitve-type CMOS fingerprint sensors have advantages of compact size and low-power consumption compared to optical sensors without any requirement of additional components.

Original languageEnglish
Pages (from-to)352-353+473+347
JournalDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Publication statusPublished - 2002 Jan 1
Event2002 IEEE International Solid-State Circuits Conference - San Francisco, CA, United States
Duration: 2002 Feb 32002 Feb 7

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Image enhancement
Pixels
Sensors
Optical sensors
Electric power utilization
Capacitance
Metals
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

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abstract = "A 500dpi capacitive-type CMOS fingerprint sensor with pixel-level adaptive image enhancement scheme is discussed. A virtually-grounded metal shield effectively suppresses the parasitic capacitances without extra circuits and a configurable diffusion network is used to generate a adaptive local threshold level for pixel-level image enhancement. Capacitve-type CMOS fingerprint sensors have advantages of compact size and low-power consumption compared to optical sensors without any requirement of additional components.",
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