JPS6468894A - Fingerprint image input device - Google Patents
Fingerprint image input deviceInfo
- Publication number
- JPS6468894A JPS6468894A JP62227341A JP22734187A JPS6468894A JP S6468894 A JPS6468894 A JP S6468894A JP 62227341 A JP62227341 A JP 62227341A JP 22734187 A JP22734187 A JP 22734187A JP S6468894 A JPS6468894 A JP S6468894A
- Authority
- JP
- Japan
- Prior art keywords
- finger
- force
- component
- transparent body
- distortion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Image Input (AREA)
Abstract
PURPOSE:To prevent the distortion of a fingerprint image due to properties intrinsic to a finger to pick a finger-print image free from variance by turning on a detector to pick up the image at the time of obtaining a minute distortion of the finger in a certain direction. CONSTITUTION:When a finger 1 is pressed on a surface 2a of a transparent body 2 to expand a spring 4 in the direction of an arrow 14, force 10 is generated in the transparent body 2 by the finger 1. The force 10 is divided into a component 12 of force in the vertical direction and a component 11 of force in the horizontal direction from an action point 16 of the finger 1. The component 11 of force overcomes the force of the spring 4 to pull a supporting part 3 up to the position of a detector 5 and is required to hold the detector 5 turned on, and the component 12 of force is required to prevent the finger from sliding on the surface 2a of the transparent body 2. Components 11 and 12 of force act to give a certain distortion independently of the characteristics intrinsic to the finger. Thus, since a minute distortion in a certain direction is applied to the finger on the contracting surface 2a between the finger and the transparent body 2, the fingerprint image is always picked up as a fixed image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62227341A JPS6468894A (en) | 1987-09-10 | 1987-09-10 | Fingerprint image input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62227341A JPS6468894A (en) | 1987-09-10 | 1987-09-10 | Fingerprint image input device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6468894A true JPS6468894A (en) | 1989-03-14 |
Family
ID=16859288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62227341A Pending JPS6468894A (en) | 1987-09-10 | 1987-09-10 | Fingerprint image input device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6468894A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6912299B1 (en) * | 1998-02-18 | 2005-06-28 | Nec Corporation | Device for detecting a fingerprint, electric apparatus and doorkeeper apparatus |
| JP2009301287A (en) * | 2008-06-12 | 2009-12-24 | Nec Corp | Biological feature input device and biological feature input method |
| JP2021036457A (en) * | 2017-07-26 | 2021-03-04 | 日本電気株式会社 | Device and method for reading fingerprint |
| CN116935519A (en) * | 2023-09-15 | 2023-10-24 | 四川金投科技股份有限公司 | Intelligent lock based on short-range wireless communication technology and control method thereof |
-
1987
- 1987-09-10 JP JP62227341A patent/JPS6468894A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6912299B1 (en) * | 1998-02-18 | 2005-06-28 | Nec Corporation | Device for detecting a fingerprint, electric apparatus and doorkeeper apparatus |
| JP2009301287A (en) * | 2008-06-12 | 2009-12-24 | Nec Corp | Biological feature input device and biological feature input method |
| JP2021036457A (en) * | 2017-07-26 | 2021-03-04 | 日本電気株式会社 | Device and method for reading fingerprint |
| US11398109B2 (en) | 2017-07-26 | 2022-07-26 | Nec Corporation | Fingerprint reading device and fingerprint reading method |
| US11823485B2 (en) | 2017-07-26 | 2023-11-21 | Nec Corporation | Fingerprint reading device and fingerprint reading method |
| CN116935519A (en) * | 2023-09-15 | 2023-10-24 | 四川金投科技股份有限公司 | Intelligent lock based on short-range wireless communication technology and control method thereof |
| CN116935519B (en) * | 2023-09-15 | 2023-12-12 | 四川金投科技股份有限公司 | Intelligent lock based on short-range wireless communication technology and control method thereof |
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