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Apparatus for inputting fingerprint

A technology of fingerprint input and fingerprint image, which is applied in the directions of acquiring/organizing fingerprints/palmprints, image data processing, image data processing, etc., and can solve the problems of damaged sensors and unprotected surfaces of static capacitive sensors

Inactive Publication Date: 2004-05-05
NEC PERSONAL COMPUTERS LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of the static capacitive sensor 17 cannot be protected by a thick insulating layer or the like
This way, if a finger is first placed around the sensor before approaching the ESD cover, electrostatic charge is released to the sensor and damages the sensor

Method used

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  • Apparatus for inputting fingerprint
  • Apparatus for inputting fingerprint
  • Apparatus for inputting fingerprint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] Several preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0065] see first Figure 10 , The device according to the first embodiment of the present invention belongs to the optical transmissive fingerprint input device, which includes a fiber optic plate 3 and a light source 2 emitting light, the fiber optic plate has a finger contact surface, so that a finger 1 contacts it to obtain a fingerprint image of the finger 1. The light emitted from the light source 2 is first introduced into the inside of the finger 1, diffuses inside the finger 1, and then passes through the surface of the finger 1 to pass out from the finger 1 as outgoing light. The fingerprint image can be obtained by using the emitted light. The light source 2 is arranged so that light emitted from the light source 2 enters the substantially central portion of the finger 1 including the first knuckle on the palm side while the light sour...

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PUM

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Abstract

A fingerprint input apparatus includes a light source (2) for emitting light and a fiber optic plate(3) having a finger contact surface with which a finger(1)is brought into contact in order to pick up a fingerprint image of the finger(1). The light from the light source(2)is at first introduced into an inside of the finger(1), is scattered within the inside of the finger(1), and comes out of the finger through the surface of the finger(1)as outgoing light. By the use of the outgoing light, the fingerprint image is formed. The light source(2)is disposed so that the light from the light source(2)enters into a substantial center of a part of the finger(1)including a first joint on a palm side and that the light source(2)is contacted with the finger(1).

Description

technical field [0001] The invention relates to a fingerprint input device, more specifically, to an optical fingerprint input device which obtains a fingerprint image through a two-dimensional image sensor. Background technique [0002] As an optical fingerprint input device using a two-dimensional image sensor, the known technical field includes an optical reflection type fingerprint input device and an optical transmission type fingerprint input device. In recent years, attention has been focused on optical transmission type fingerprint input devices. In the optical transmissive fingerprint input device, the light first enters the inside of the finger and diffuses inside the finger, and the transmitted light is emitted through the surface of the finger. The fingerprint image can be obtained by collecting the outgoing light. In the optical transmissive fingerprint input device, compared with the method of acquiring the fingerprint image with the surface of the finger as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00G06K9/00
CPCG06K2009/0006G06K9/00046G06K2009/00932G06V40/1341G06V40/1324G06V40/14
Inventor 樋口辉幸菅原武雄
Owner NEC PERSONAL COMPUTERS LTD