采用像素级自适应图像增强方案的500 dpi电容式CMOS指纹传感器

2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315) Pub Date : 2002-08-07 DOI:10.1109/ISSCC.2002.993077

Kwang-Hyun Lee, E. Yoon

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引用次数: 8

摘要

500dpi电容式CMOS指纹传感器具有像素级自适应图像增强功能，利用虚拟接地金属屏蔽层抑制寄生电容，利用电容交换网络产生局部阈值电平。0.6 μm CMOS的210×100传感器在5v电源下功耗为40mw。

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

A 500 dpi capacitive CMOS fingerprint sensor with pixel-level adaptation image enhancement uses virtually-grounded metal shields to suppress parasitic capacitances and capacitive switching networks to generate local threshold level. A 210×100 sensor in 0.6 μm CMOS consumes 40 mW at 5 V supply.

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2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315)

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