一种先进的指纹传感器LSI及其在指纹识别系统中的应用

2002 Symposium on VLSI Circuits. Digest of Technical Papers (Cat. No.02CH37302) Pub Date : 2002-06-13 DOI:10.1109/VLSIC.2002.1015103

H. Morimura, S. Shigematsu, T. Shimamura, K. Fujii, C. Yamaguchi, H. Suto, Y. Okazaki, K. Machida, H. Kyuragi

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引用次数: 1

摘要

我们开发了一种先进的指纹传感器LSI，具有新颖的传感器结构，传感电路和校准电路，采用0.5-/spl μ m CMOS工艺/传感器工艺。该LSI具有可靠、灵敏、耐传感器表面条件变化的特点，可在长期使用中捕获清晰的指纹图像。我们还介绍了一种带有可调a /D转换器的指纹图像调整方案，以获得适合识别的图像质量。将指纹传感器LSI应用于指纹图像调整方案的指纹识别系统中，取得了足够的性能。

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An advanced fingerprint sensor LSI and its application to a fingerprint identification system

We developed an advanced fingerprint sensor LSI that features a novel sensor structure, sensing circuit, and calibration circuit, using the 0.5-/spl mu/m CMOS process/sensor process. The LSI is reliable, sensitive, and tolerant to changes in the sensor surface conditions for capturing clear fingerprint image over long-term use. We also introduce a fingerprint-image adjustment scheme with an adjustable A/D converter to obtain image quality suitable for identification. The fingerprint sensor LSI was applied to a fingerprint identification system with the fingerprint-image adjustment scheme and achieved sufficient performance for a practical fingerprint identification system.

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2002 Symposium on VLSI Circuits. Digest of Technical Papers (Cat. No.02CH37302)

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