| Presentation | 2002/6/20 Fingerprint Sensor LSI Yukio OKAZAKI, Katsuyuki MACHIDA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have developed a capacitive fingerprint sensor LSI with such features as a small size, light weight, low power consumption, that offers secure and convenient automatic user authentication. The sensing circuit achieves high sensitivity to detect small capacitance between the finger surface and the sensor plate. The calibration circuit eliminates the influence of the sensor surface condition, which is degraded by dirt or a scratch during long-time usage. The chip also has a fingerprint-image adjustment scheme with an adjustable A/D converter to obtain image quality suitable for identification. Each sensor plate is surrounded by a grounded wall, and the top of the wall is exposed to the sensor surface. This structure provides high immunity to electrostatic discharge because the charge of the finger is discharged through the grounded wall. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Fingerprint sensor / Fingerprint identification / Sensing Circuit / User authentication |
| Paper # | CAS2002-25 |
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| Conference Information | |
| Committee | CAS |
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| Conference Date | 2002/6/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Circuits and Systems (CAS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fingerprint Sensor LSI |
| Sub Title (in English) | |
| Keyword(1) | Fingerprint sensor |
| Keyword(2) | Fingerprint identification |
| Keyword(3) | Sensing Circuit |
| Keyword(4) | User authentication |
| 1st Author's Name | Yukio OKAZAKI |
| 1st Author's Affiliation | NTT Lifestyle and Environmental Technology Laboratories() |
| 2nd Author's Name | Katsuyuki MACHIDA |
| 2nd Author's Affiliation | NTT Telecommunication Energy Laboratories |
| Date | 2002/6/20 |
| Paper # | CAS2002-25 |
| Volume (vol) | vol.102 |
| Number (no) | 161 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |