JPH04242486A - Fingerprint input device - Google Patents

Abstract

PURPOSE:To attain the sure input of a fingerprint pattern without contact by positioning a finger to input the fingerprint pattern in a simple constitution. CONSTITUTION:A contact plate 10 is provided together with a support plate 11, a finger guide 12, a sensor 15, an image pick-up device 14, an illumination device 15, an image memory 16, and a CPU 17. In such 8 constitution, a fingerprint surface S of a finger F1 is positioned in the width direction (perpendicular direction) with a finger guide 12 set in the horizontal direction and in the revolving direction with the side face of the plate 11 set in the perpendicular direction and the guide 12 respectively. Furthermore the moving direction of the finger is positioned by the sensor 13.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fingerprint input device used for fingerprint verification or fingerprint identification.

0002

2. Description of the Related Art In order to use fingerprints as a means of identifying individuals, it is desirable to have a simple, inkless, non-contact type fingerprint input device that places less psychological and physical burden on the user.

[0003] As such a conventional fingerprint input device,
There are methods that utilize the emission of laser light from substances contained in skin secretions, and methods that use the reflected light from contacting the finger on which the fingerprint pattern is to be input with a glass surface such as a prism. Automatic identification technology Masahiro Kawagoe, "Measurement and Technology", Vol. 25, No. 8, pp.
701-706).

[0004] The latter fingerprint input device using a prism is
The prism is configured so that the bottom surface of the prism is illuminated by total internal reflection from the inside, and the light that is totally reflected from the inner surface of the prism is imaged onto an image sensor by an imaging optical system disposed outside the prism.

That is, this device uses the fact that when a finger is pressed against the outer surface of the bottom of the prism, light is scattered at the convex part of the fingerprint due to contact between the skin and the glass of the prism. This method obtains images with strong fingerprint patterns (Automatic classification of fingerprint patterns, Kawagoe, Munekami, "Information Processing Society of Japan Research Report", Computer Vision, 18-2,
1982).

[0006]

[Problems to be Solved by the Invention] In the conventional fingerprint input device using a glass surface such as the above-mentioned prism,
Since the optical paths from each point of the fingerprint pattern to the image sensor are different, there is a problem in that trapezoidal distortion occurs.

[0007] Furthermore, since the noise light is superimposed by the residual fingerprint of the previous user, there is a problem that the characteristics of the fingerprint pattern of the current user cannot be extracted.

Furthermore, depending on the amount of secretions on the surface of the finger,
Since the degree of light scattering is greatly affected, if a person with little secretions, such as an elderly person, uses the device, the fingerprint will be blurred and the image of the input fingerprint pattern will be significantly degraded. In addition, contact-type fingerprint input devices, in which the finger on which the fingerprint pattern is to be input is placed in contact with a glass surface or the like to input and collect the fingerprint pattern, have a strong image of a criminal and may be emotionally unpleasant to the user. There is a problem that

[0009] In order to solve these problems, a method of improving contrast by placing an image sensor in an area where scattered light does not reach (fingerprint information detection method using a prism, Shimizu et al., ``
National Conference of the Institute of Electronics and Communication Engineers, 1311, 1984),
A device that inputs a two-dimensional image of a fingerprint ridge pattern using a hologram to avoid the influence of residual fingerprints (a personal verification device using a holographic fingerprint sensor,
Igaki et al., "Research Report of the Institute of Electronics, Information and Communication Engineers," Pattern Recognition and Understanding, 88-38, 1988) have been proposed, but in either case, since it is a contact type, it is difficult to solve the above problems. I can't.

On the other hand, the above-mentioned problems can be solved by inputting the fingerprint pattern in a non-contact manner, that is, by inputting and collecting the fingerprint pattern without touching the glass surface or the like with the finger on which the fingerprint pattern is to be input. However, because it is a non-contact type, the fingerprint surface is blurred, making it impossible to input the fingerprint pattern accurately.Therefore, it is important to minimize deviations due to the position, direction, and rotation of the fingerprint surface. There is a problem.

Therefore, the present invention makes it possible to reliably input a fingerprint pattern without being affected by residual fingerprints.
A non-contact fingerprint input device having a simple configuration is provided.

0012

[Means for Solving the Problems] A support plate on which a plurality of fingers are movable along the support plate, a finger on which a fingerprint pattern is to be input, and a finger adjacent to the finger formed perpendicularly to the support plate. a guide means that guides the fingers by being pinched by the guide means; an imaging means that is disposed opposite to the fingerprint surface of the finger guided by the guide means and is capable of capturing a fingerprint pattern; and a finger guided by the guide means. and a detection control means that is capable of detecting the presence of a finger at a predetermined position and controls the imaging means to take an image when the presence of the finger is detected.

[0013]

[Operation] The finger for which a fingerprint pattern is to be input and the finger adjacent to this finger move along the guide means so as to sandwich the guide means, and when the detection control means detects that the finger is present at a predetermined position, The imaging means is controlled to image the pattern. Therefore, the fingerprint pattern is directly imaged by the imaging means in a non-contact manner, and since the fingers are guided by sandwiching the guide means, the positioning of the fingerprint pattern image is performed reliably and easily, so that it is not affected by residual fingerprints. It is possible to reliably input a fingerprint pattern with a simple configuration.

[0014]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing a first embodiment of a fingerprint input device according to the present invention.

As shown in the figure, the fingerprint input device of this embodiment includes a contact plate 10, a support plate 11, a finger guide 12, a sensor 13, an imaging device 14, a lighting device 15, an image memory 16, and a CPU (center (processing device) 17.

The support plate 11 is erected so as to be able to contact and support the surface of the back of the hand H, that is, the surface opposite to the fingerprint surface S of the finger.

A plate-shaped finger guide 1 is provided on the side surface of the support plate 11.
2 is formed perpendicularly to the side surface of the support plate 11 and in the horizontal direction so that it can be sandwiched between the finger F1 for which a fingerprint pattern is to be input and the finger F2 adjacent to the finger F1.

Further, on the side surface of the support plate 11, there is a contact plate 1 that can be contacted when the finger F1 is moved along the finger guide 12.
0 is formed perpendicular to the side surface of the support plate 11 and the finger guide 12.

The finger F1 is placed on the contact plate 10 in the direction of movement of the finger (
A sensor 13 is arranged to detect whether or not the finger guide 12 is located at a predetermined input reading position in the direction of the arrow shown in the figure.

That is, in the device of this embodiment, when the finger F1 is guided along the finger guide 12 in the direction of movement of the finger (in the direction of the arrow in the figure), the fingerprint surface S of the finger F1 touches the side surface of the support plate 11. It is configured to be guided facing the opposite direction.

At the above-mentioned predetermined input reading position of the finger guide 12, there is a lighting device 15 for uniformly illuminating the fingerprint surface S of the finger F1, and a lighting device 15 for uniformly illuminating the fingerprint surface S of the finger F1;
An imaging device 14 for capturing an image of the fingerprint pattern using reflected light from the fingerprint pattern is arranged to face the fingerprint surface S and the side surface of the support plate 11.

Note that the imaging device 14 is a lighting device 15.
A lens that collects reflected light from the fingerprint pattern on the fingerprint surface S illuminated by a CCD (charge coupled device), for example.
The illumination device 15 may be composed of, for example, an annular fluorescent tube so as to uniformly illuminate the fingerprint surface S of the finger F1.

It is also assumed that the imaging device 14 is arranged so as to focus on the assumed position of the fingerprint surface S at a predetermined input reading position.

[0025] The CPU 17 includes the sensor 13 and the lighting device 1.
5. Image memory 1 for storing fingerprint pattern images
6 and an external interface circuit (not shown).

Finger guide 12 is one embodiment of the guide means of the present invention.

The imaging device 14, the illumination device 15, and the image memory 16 are an embodiment of the imaging means of the present invention.

The sensor 13 and the CPU 17 are an embodiment of the detection control means of the present invention.

Next, the operation of the above embodiment will be explained.

In FIG. 1, the finger guide 12 is arranged so that the back of the hand H is along the support plate 11, and the finger F1 for which a fingerprint pattern is to be input and the finger F2 adjacent to the finger F1 sandwich the finger guide 12. When the finger F1 reaches a predetermined input reading position, the sensor 13 detects the presence of the finger F1.

In this case, the movement (shaking) of the fingerprint surface S of the finger F1 in the width direction (vertical direction) is limited by the finger guide 12 provided in the horizontal direction, and the movement of the fingerprint surface S in the rotational direction is limited. , is restricted by the side surface of the support plate 11 provided in the vertical direction and the finger guide 12, and furthermore, the movement of the fingerprint surface S in the direction of movement of the finger (in the direction of the arrow in the figure) is restricted by a sensor formed on the abutting plate 10. 13.

When the sensor 13 detects the presence of the finger F1 at a predetermined input reading position, it sends a detection signal to the CPU 17.

When the CPU 17 receives the detection signal from the sensor 13, it drives the lighting device 15 to turn it on, and outputs an imaging start signal to the imaging device 14.

An image of the fingerprint pattern is captured by the imaging device 14 based on the light reflected from the fingerprint pattern on the fingerprint surface S illuminated by the illumination device 15 .

[0035] The CPU 17 controls writing of the image of the fingerprint pattern taken by the imaging device 14 into the image memory 16.

Therefore, according to the above-described embodiment, since the fingerprint pattern is input in a non-contact manner, the fingerprint pattern can be input reliably without being affected by residual fingerprints.

Further, the fingerprint surface S of the finger F1 is positioned in the width direction (vertical direction) by the finger guide 12 provided in the horizontal direction, and in the rotation direction by the side surface of the support plate 11 provided in the vertical direction. Since the position is determined by the finger guide 12 and the sensor 13 in the direction of movement of the finger (in the direction of the arrow shown in the figure), the positioning of the fingerprint pattern image can be performed reliably and easily.
A fingerprint pattern can be input reliably.

Furthermore, these things can contribute to improving the performance of fingerprint verification and identification.

In this embodiment, an example of a device capable of inputting a fingerprint pattern of a finger of the right hand was shown.
By providing an abutment plate 10, a finger guide 12, and a sensor 13 on the side opposite to the side of the camera, and arranging an imaging device 14 and an illumination device 15, a device that can easily input the fingerprint pattern of the fingers of the left hand is provided. Can be configured.

FIG. 2 is a schematic configuration diagram showing a modification of the finger guide of the fingerprint input device of FIG.
) is its front view, and FIG. 2(B) is its right side view.

As shown in these figures, the finger guide 18 corresponding to the finger guide 12 of the fingerprint input device in FIG. movable groove 18a and finger F2 adjacent to finger F1
The groove 18b on which the side part of the groove 18b is slidable is in the direction of movement of the finger F1 (
They are formed along the direction of the arrow shown in the figure.

[0042] These grooves 18a and 18b are
1 and F2 so that the surface is smooth.

A notch 18c is formed at a predetermined input reading position on the upper surface of the finger guide 18 so that the fingerprint surface of the finger F1 can be seen.

[0044] Finger guide 18 is one embodiment of the guide means of the present invention.

Therefore, according to this finger guide 18, the groove 1
Since the distance between the fingerprint surface and an imaging device (not shown) is defined by 8a and 18b, a clear image of the fingerprint pattern can be taken by the imaging device and an illumination device (not shown). You can reliably enter your fingerprint pattern.

FIG. 3 is a perspective view showing a schematic configuration of a second embodiment of the fingerprint input device according to the present invention, and FIG. 4 is a side view of the fingerprint input device of FIG. 3.

Components that are the same as those in the first embodiment shown in FIG. 1 are given the same reference numerals as in FIG. 1, except for the support plate 19.

As shown in FIGS. 3 and 4, the fingerprint input device of this embodiment includes a contact plate 10, a support plate 19, and a finger guide 1.
2, sensor 13, imaging device 14, lighting device 15
, as well as an image memory and a CPU (not shown), and the operation based on the configuration of this embodiment is basically the same as that of the first embodiment shown in FIG.

The support plate 11 of the embodiment shown in FIG. 1 is provided with its side surface in the vertical direction, but the support plate 19 of this embodiment is provided with an abutment plate 10, a finger guide 12, and a sensor 13. The side surface of the supporting plate 19 is formed at a predetermined angle with respect to the vertical plane. That is, in this embodiment, the finger F
1 along the finger guide 12, the fingerprint surface S
is configured so that it faces diagonally upward.

Therefore, according to this embodiment, the back of the hand H is placed along the support plate 11, and the finger F1 for which a fingerprint pattern is to be input and the finger F2 adjacent to the finger F1 are placed in the finger guide 1.
2, the fingerprint surface S faces diagonally upward in the direction of finger movement (
(in the direction of the arrow shown in the figure), the operation for inputting the fingerprint pattern becomes a very natural action for the user.

Further, the positional relationship between the imaging device 14 and the fingerprint surface S is as shown in FIG.
Since it is located obliquely below the lens, it is possible to improve the dustproof effect on the lens provided in the imaging device 14.

Furthermore, since the fingerprint pattern is input in a non-contact manner, the fingerprint pattern can be input reliably without being affected by residual fingerprints.

[0053] Therefore, these things can contribute to improving the performance of fingerprint verification and identification.

The above-mentioned angle of the side surface of the support plate 19 with respect to the vertical plane should be determined so that when a user inputting a fingerprint pattern moves his or her finger along the finger guide, the user can do so in a natural manner. is possible.

Further, in this embodiment, an example of a device capable of inputting a fingerprint pattern of a finger of the right hand was shown.
By providing an abutment plate 10, a finger guide 12, and a sensor 13 on the side opposite to the side of the camera, and arranging an imaging device 14 and an illumination device 15, a device that can easily input the fingerprint pattern of the fingers of the left hand is provided. Can be configured.

FIG. 5 is a perspective view showing a schematic configuration of a third embodiment of the fingerprint input device according to the present invention, and FIG. 6 is a side view of the fingerprint input device of FIG. 5.

Components that are the same as those in the first embodiment shown in FIG. 1 are given the same reference numerals as in FIG. 1, except for the support plate 21.

As shown in FIGS. 5 and 6, the fingerprint input device of this embodiment includes a contact plate 10, a support plate 21, and a finger guide 1.
2, sensor 13, imaging device 14, lighting device 15
, as well as an image memory and a CPU (not shown), and the operation based on the configuration of this embodiment is basically the same as that of the first embodiment shown in FIG.

In the first and second embodiments described above, the finger contacts the surface of the back of the hand H, that is, the surface opposite to the fingerprint surface S of the finger;
Support plates 11 and 19 are configured that can support this, and the support plate 21 of this embodiment is capable of contacting the palm, that is, the surface on the side of the fingerprint surface S, and supporting this. It is set up like this.

A through hole 31 for reading a fingerprint pattern is formed in this support plate 21, and the imaging device 14
As shown in FIG. 6, is arranged on the opposite side of the support plate 21 from the fingers F1 and F2 so that the fingerprint pattern can be read through the through hole 31.

According to this embodiment, the palm of the hand is attached to the support plate 21.
Finger F along which the fingerprint pattern should be input
1 and the finger F2 adjacent to the finger F1 move in the direction of movement of the fingers (in the direction of the arrow in the figure) with the finger guide 12 in between, so the action for inputting the fingerprint pattern becomes a very natural action for the user.

Furthermore, since the fingerprint pattern is input in a non-contact manner, it is possible to reliably input the fingerprint pattern without being affected by residual fingerprints.

In this embodiment, an example of a device capable of inputting a fingerprint pattern of a finger of the right hand was shown.
By providing a contact plate 10, a finger guide 12, and a sensor 13 on the surface opposite to the surface of the camera, and arranging an imaging device 14 and an illumination device 15, a device that can easily input the fingerprint pattern of the fingers of the left hand is provided. Can be configured.

FIG. 7 schematically shows an embodiment in which a mechanical sensor 41 is provided as a sensor for detecting whether or not a finger for inputting a fingerprint pattern is pinching the finger guide 18 in the fingerprint input device shown in FIG. 7(A) is a front view thereof, and FIG. 7(B) is a right side view thereof.

FIG. 8 shows a sensor in the fingerprint input device of FIG. 2 that detects whether or not the finger on which a fingerprint pattern is to be input has moved to a predetermined position along the finger guide 18.
It is a schematic configuration diagram showing an embodiment in which optical sensors 42 and 43 are provided, and (A) in FIG. 8 is a front view thereof, and (A) in FIG.
B) is the right side view, and (C) in Fig. 8 is the (B) in Fig. 8.
It is an enlarged view of.

Components that are the same as those in the first embodiment shown in FIG. 1 are given the same reference numerals as in FIG. 1, except for the finger guide 18.

As shown in FIGS. 7 and 8, the fingerprint input device of these embodiments includes a contact plate 10, a support plate 11, a finger guide 18, a sensor 13, an imaging device, a lighting device, It is equipped with an image memory and a CPU, and the operations based on the configurations of these embodiments are basically the same as those of the first embodiment shown in FIG.

As shown in FIGS. 7 and 8, the finger guide 18
has a groove 18a in which the side of the finger F1 can slide, and a groove 18b in which the side of the finger F2 adjacent to the finger F1 can slide, on its upper and lower surfaces. arrow direction)
They are formed along the respective lines.

These grooves 18a and 18b are
1 and F2 so that the surface is smooth.

A notch 18c is formed at a predetermined input reading position on the upper surface of the finger guide 18 so that the fingerprint surface of the finger F1 can be seen.

In the fingerprint input device of the embodiment shown in FIG. 7, a mechanical sensor 41 is installed in the groove of the finger guide 18 so that it is located near, for example, the first joint of the finger F1 moving along the finger guide 18. It is arranged on the side of 18a.

This mechanical sensor 41 is connected to the finger guide 18.
It is activated when the fingers F1 and F2 pinch the finger guide 18, and detects that the fingers F1 and F2 are pinching the finger guide 18, and sends a detection signal to a CPU (not shown).

In the fingerprint input device of the embodiment shown in FIG. the groove 18 of the finger guide 18 so that it is located near the
It is located at part a.

The light emitted from the light emitting section 42 is transmitted to the light receiving section 43.
The light emitting section 42 and the light receiving section 43
When the optical path 44 between the finger F1 is blocked by the finger F1, it is detected that the finger is moving along (within) the groove of the finger guide 18, and a detection signal is sent to a CPU (not shown). It is composed of

An optical sensor composed of the sensor 13, the sensor 41, the light emitting section 42, and the light receiving section 43 is an embodiment of the detection control means of the present invention.

An optical sensor consisting of a light emitting section 42 and a light receiving section 43 detects that the finger F1 is moving along (within) the groove of the finger guide 18, or that the finger F1 is moving along the groove of the finger guide 18. A mechanical sensor 41 (
SW1) and a sensor 13 (SW2) that detects that the fingertip is pressed against the contact plate 10. In the embodiment of the fingerprint input device, when all these sensors are activated simultaneously, input of the fingerprint pattern starts. When the sensor is configured as
Depending on the OFF state, the operating status of the sensor 13, the mechanical sensor 41, and the optical sensor consisting of the light emitting section 42 and the light receiving section 43 can be indicated by displaying a message as shown in Table 1 below, for example. It is possible to configure the device in such a way that it is known to the inputter in advance.

[0077]

[Table 1]

Therefore, according to this embodiment, the finger guide 1
Since the distance between the fingerprint surface and the imaging device (not shown) is defined by the grooves 18a and 18b of 8, a clear image of the fingerprint pattern can be taken by the imaging device and the lighting device (not shown). A fingerprint pattern can be input reliably.

[0079] Furthermore, by making it possible for the input person to know the operating status of the sensor 13, the mechanical sensor 41, or the optical sensor consisting of the light emitting section 42 and the light receiving section 43,
Fingerprint pattern input can be performed smoothly.

[0080] In this embodiment, an example of a device capable of inputting the fingerprint pattern of the right finger was shown, but the contact plate 10, the finger guide 18, the sensor 13, the mechanical sensor 41, and the light emitting unit 42 A contact plate 1 is provided on the side surface opposite to the side surface of the support plate 11 on which the optical sensor consisting of the and the light receiving section 43 is provided.
0, finger guide 18, sensor 13, mechanical sensor 41,
In addition to providing an optical sensor consisting of a light emitting section 42 and a light receiving section 43, the imaging device 14 and the lighting device 1
By arranging 5, it is possible to configure a device that can easily input the fingerprint pattern of the fingers of the left hand.

FIG. 9 shows a mechanical sensor in the fingerprint input device of FIG. 1 that detects the position of the finger F1 in the direction perpendicular to the fingerprint surface when the finger F1 for which a fingerprint pattern is to be input is moving along the finger guide 12. A schematic configuration diagram showing an embodiment in which a sensor 51 is provided, and FIG. 10 is a top view of FIG. 9.

Components that are the same as those of the first embodiment shown in FIG. 1 are given the same reference numerals as those in FIG. 1.

As shown in FIGS. 9 and 10, the fingerprint input device of this embodiment includes a contact plate 10, a support plate 11, a finger guide 12, a sensor 13, a mechanical sensor 51, and an imaging device (not shown). , lighting devices, image memories and C
The operation based on the configuration of this embodiment is basically the same as that of the first embodiment shown in FIG.

The sensor 51 is located above the finger guide 12 so that when the finger F1 moves along the finger guide 12 and reaches a predetermined position, it can detect the position in the direction perpendicular to the fingerprint surface. As shown in FIG. 10, the finger F1 moves along the finger guide 12, and the finger F
When it is not pressed by the surface opposite to the fingerprint surface of No. 1, it protrudes in a direction perpendicular to the support plate 11, and when it is pressed by the surface opposite to the fingerprint surface, it is flush with the support plate 11. It is configured to be rotatable (in the direction of the dashed arrow in the figure).

[0085] When the sensor 51 detects the presence of the finger F1,
It is configured to send a detection signal to a CPU (not shown).

The sensor 13 and the sensor 51 are an embodiment of the detection control means of the present invention.

In FIG. 9, the fingers are moved so that the back of the hand H is along the support plate 11, and the finger F1 for which the fingerprint pattern is to be input and the finger F2 adjacent to the finger F1 sandwich the finger guide 12. When the finger F1 reaches a predetermined input reading position, the sensors 13 and 51 detect the presence of the finger F1.

Sensors 13 and 5 that detected the presence of finger F1
1 sends a detection signal to a CPU (not shown).

[0089] When the CPU receives the detection signals from the sensors 13 and 51, it drives the lighting device to turn it on and outputs an imaging start signal to the imaging device.

An image from the fingerprint pattern is captured by the imaging device based on the light reflected from the fingerprint pattern on the fingerprint surface illuminated by the illumination device.

[0091] The CPU controls writing of the image of the fingerprint pattern taken by the imaging device into the image memory.

Therefore, according to the above-described embodiment, since the fingerprint pattern is input in a non-contact manner, the fingerprint pattern can be reliably input without being affected by residual fingerprints.

[0093] Furthermore, it is possible to configure the apparatus in such a way that the inputting person can know in advance the operating status of the sensor 13 and the sensor 51, thereby allowing the fingerprint pattern to be inputted smoothly.

Furthermore, these things can contribute to improving the performance of fingerprint verification and identification.

[0095] In this embodiment, an example of a device capable of inputting a fingerprint pattern of a finger of the right hand was shown. A contact plate 10, a finger guide 12, a sensor 13, and a sensor 51 are provided on the side opposite to the side of the
By arranging the imaging device 14 and the lighting device 15, it is possible to configure a device that can easily input the fingerprint pattern of the fingers of the left hand.

[0096]

As explained above, the present invention includes a support plate along which a plurality of fingers can move, and a finger which is formed perpendicularly to the support plate and which is to input a fingerprint pattern. a guide means that guides the fingers by being sandwiched between the fingers; an imaging means that is arranged to face the fingerprint surface of the finger guided by the guide means and is capable of capturing a fingerprint pattern; and a guide. The present invention includes a detection control means capable of detecting the presence of a finger guided by the means at a predetermined position and controlling the imaging means to take an image when the presence of the finger is detected.
Reliably inputting a fingerprint pattern without being affected by residual fingerprints can be achieved with a simple, non-contact configuration.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing a first embodiment of a fingerprint input device according to the present invention.

FIG. 2 is a schematic configuration diagram showing a modification of the finger guide of the fingerprint input device of FIG. 1 according to the present invention.

FIG. 3 is a perspective view showing a schematic configuration of a second embodiment of the fingerprint input device according to the present invention.

FIG. 4 is a side view of the fingerprint input device of FIG. 3;

FIG. 5 is a perspective view showing a schematic configuration of a third embodiment of the fingerprint input device according to the present invention.

FIG. 6 is a side view of the fingerprint input device of FIG. 5;

7 is a schematic configuration diagram showing an embodiment in which a mechanical sensor is provided as a sensor for detecting whether or not a finger for inputting a fingerprint pattern is pinching a finger guide in the fingerprint input device of FIG. 2; FIG. .

FIG. 8 is an embodiment in which an optical sensor is provided as a sensor for detecting whether a finger for inputting a fingerprint pattern has moved to a predetermined position along a finger guide in the fingerprint input device of FIG. 2; FIG.

9] In the fingerprint input device of FIG. 1, when a finger for inputting a fingerprint pattern is moving along a finger guide,
FIG. 2 is a schematic configuration diagram showing an example in which a mechanical sensor for detecting a position in a direction perpendicular to a fingerprint surface is provided.

FIG. 10 is a top view of FIG. 9;

[Explanation of symbols]

10 Contact plate 11, 19, 21 Support plate 12, 18 Finger guide 13, 41, 51 sensor 14 Photography device 15. Lighting device 16 Image memory 17 CPU 31 Through hole 42 Light emitting part 43 Light receiving part

Claims (1)

[Claims] Claim 1: A plurality of fingers are sandwiched between a support plate that is movable along the support plate, a finger that is formed perpendicular to the support plate, and is to input a fingerprint pattern, and a finger adjacent to the finger. a guide means for guiding the finger by the guiding means; an imaging means disposed opposite to the fingerprint surface of the finger guided by the guide means and capable of capturing a fingerprint pattern; What is claimed is: 1. A fingerprint input device comprising: a detection control means capable of detecting the presence of a finger at a position and controlling the imaging means to take an image when the presence of a finger is detected.