JP4613900B2 - Information device with fingerprint authentication function - Google Patents

Description

  The present invention relates to an improvement of a fingerprint authentication function unit that prevents a recognition error at the time of reading a fingerprint by a fingerprint sensor in an information device in which confidentiality is maintained by fingerprint authentication.

In the developing information society, financial institutions and the like are increasingly adopting fingerprint authentication devices such as an automatic teller machine as a highly accurate system for performing identity verification.
Furthermore, a fingerprint authentication device has also been proposed for the purpose of security in private property such as corporate confidentiality and apartment housing (for example, Patent Document 1).

  Since the fingerprint authentication apparatus in such a facility is a large system to be implemented, the apparatus can be easily attached, the fingerprint authentication function unit can be configured in a large size, and the flexibility of the mechanism design is high. However, in an information device such as a personal computer, a mobile phone, or a USB memory device that is required to be thin and small, the size of the fingerprint authentication function unit is limited. Further, in the case of a mobile phone, the fingerprint detection unit is located at a position deviated from the part constituting the original function of the device main body, that is, the upper end or lower end of the device main body. (For example, patent document 2).

Further, in a USB memory device that is smaller than a mobile phone or a personal computer, the fingerprint authentication function unit is further subjected to structural restrictions. FIG. 10 shows a state in which the fingerprint authentication function unit 102 is configured in such a conventional USB memory device 101, and the fingerprint sensor 104 is arranged in the rectangular recess 103.
JP-A-2005-352788 JP 2003-298711 A

  In the USB memory device 101 configured as described above, when the fingertip is slid on the fingerprint sensor 104 for fingerprint authentication, it is difficult to repeat the sliding accurately at the center position, and there is a high probability of causing a recognition error. It was a thing. That is, as shown in FIG. 11A, when the fingerprint registration position is performed by sliding the fingertip F at the center of the fingerprint sensor 104 as shown in the same figure, the sliding contact of the fingertip F in the fingerprint authentication is also the same position. Must be done.

  However, the sliding contact of the fingertip F is often biased left and right from the center of the fingerprint sensor 104 as shown in FIGS. 11B and 11C, and the fingertip F always slides at the center of the fingerprint sensor 104. This is a cause of occurrence of a recognition error. The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an information device with a fingerprint authentication function in which a fingertip is always slid in the center of a fingerprint sensor to prevent a recognition error. To do.

Therefore, the present invention solves the above problems by the means described below. That is, in the invention according to claim 1,
It is an information device with a fingerprint authentication function that performs identity verification from fingerprint data obtained by sliding the fingerprint part of the fingertip on the fingerprint sensor.
Formed on the surface of the housing is a fingertip recess similar to the front shape from the first joint of the fingertip, and a finger pad recess corresponding to the shape between the first joint and the second joint, and the first joint An information device with a fingerprint authentication function in which a fingerprint sensor is disposed at a constricted portion at a corresponding position is provided.

  According to a second aspect of the present invention, in the information device with a fingerprint authentication function according to the first aspect, inclined surfaces are formed at the front end portion and the rear end portion of the recessed portion.

  According to a third aspect of the present invention, in the information device with a fingerprint authentication function according to the first aspect, the fingerprint sensor is elastically supported.

  According to the present invention, the fingertip coincides with the fingerprint authentication function unit, and the fingerprint sensor can be always slid in a fixed position, so that recognition errors can be prevented and the fingerprint authentication function unit is structurally structured. It can be prevented from becoming large, and can be a fingerprint authentication function unit suitable for information equipment that is required to be thin and small. In addition, because the front and rear end of the concave part that constitutes the fingerprint authentication function part are formed with inclined surfaces, sliding contact with the fingerprint sensor is possible without giving a sense of resistance to the fingertip, and the fingerprint sensor is elastic. The followability to the fingertip at the time of sliding contact can be improved from the support.

  FIG. 1 is a plan view of a USB memory device A embodying the present invention, and FIG. 2 is a perspective view thereof. In the figure, a connector 1 for connecting to a personal computer or the like is provided at the front end of the main body of the USB memory device A, and a fingerprint authentication function unit 2 is configured on the surface of the casing of the main body. As shown in FIG. 1, the fingerprint authentication function unit 2 includes a fingertip recess 3a that resembles a front shape from the first joint of the fingertip, and a finger pad recess that matches the shape between the first joint and the second joint. The portion 3b is formed, and therefore the position corresponding to the first joint of the fingertip is the constricted portion 3c. In addition, the inclined surface 3a-1 is formed in the front end part of the fingertip recessed part 3a, and the inclined part 3b-1 is formed in the rear end part of the finger pad recessed part 3b.

  And the fingerprint sensor 4 is arrange | positioned as shown in FIG. 3 in the narrow part 3c formed in this way. The fingerprint sensor 4 is preferably a capacitance type or optical type in order to detect the irregularities of the fingerprint by sliding the fingertip. Since the fingerprint sensor 4 is supported by a rubber damper 5 fixed in the main body, the fingerprint sensor 4 sinks when pressed and can flexibly follow the surface of the fingertip.

  The present invention is configured as described above. When the finger registered in the fingertip recess 3a and the finger pad recess 3b of the fingerprint authentication function unit 2 is placed, the outer shape of the fingertip F is recessed as shown in FIG. As shown in FIG. 5, the first joint of the fingertip F is positioned on the fingerprint sensor 4 of the constricted portion 3c, as shown in FIG.

  Therefore, since the arranged fingertip F comes into contact with the entire peripheral side of the fingertip recessed portion 3a and the finger pad recessed portion 3b, it is possible to obtain a feeling that the fingertip F is accurately placed on the fingerprint authentication function unit 2, The first joint portion of the fingertip F can be arranged at the center position of the fingerprint sensor 4. Then, when the fingertip F is slid on the fingerprint sensor 4 as shown in FIG. 6 from such a state, the finger pad portion of the fingertip F moves smoothly along the inclined portion 3b-1 and is shown in FIG. As described above, the fingerprint of the fingertip F is read by the fingertip sensor 4.

  In the process of sliding the fingertip F on the fingerprint sensor F in this way, the side of the moving fingertip F is guided to the constricted portion 3c as shown in FIG. The position of the direction can be accurately maintained, and the sliding contact state of the fingertip can be grasped by a tactile sensation obtained on the side of the fingertip. Further, since the fingerprint sensor 4 is biased upward by the rubber damper 5, the contact state with the fingertip F is kept even at any position, and more accurate fingerprint reading is possible.

  As described above, according to the present invention, the intended function can be obtained by forming a concave portion having a slight depth with a shape similar to the outer shape of the fingertip. It can be implemented in information equipment, and can be arranged on the back surface of the mobile phone B as shown in FIG. 8, or can be arranged on the casing surface of the notebook personal computer C as shown in FIG. It is possible and can be implemented in a wide range.

It is a top view of the USB memory device which implemented this invention. FIG. 2 is a perspective view of the USB memory device of FIG. 1. FIG. 2 is a cross-sectional view of the USB memory device of FIG. 1. It is a top view for demonstrating the function of this invention. It is a longitudinal cross-sectional view for demonstrating the function of this invention. It is a longitudinal cross-sectional view for demonstrating the function of this invention. It is a cross-sectional view for demonstrating the function of this invention. It is a perspective view of the state which implemented this invention in the mobile telephone. It is a perspective view of the state which carried out the present invention to a notebook type personal computer. It is a perspective view of the conventional USB memory device. It is a figure explaining the malfunction of the conventional USB memory device.

Explanation of symbols

A ... USB memory device B ... Mobile phone C ... Notebook PC 1 ... Connector 2 ... Fingerprint authentication function unit 3a ... ··· Fingertip recess 3b ··· Finger belly recess 4 ··· Fingerprint sensor 5 ··· Rubber damper

Claims (3)

It is an information device with a fingerprint authentication function that performs identity verification from fingerprint data obtained by sliding the fingerprint part of the fingertip on the fingerprint sensor.
Formed on the surface of the housing is a fingertip recess similar to the front shape from the first joint of the fingertip, and a finger pad recess corresponding to the shape between the first joint and the second joint, and the first joint An information device with a fingerprint authentication function, characterized in that a fingerprint sensor is arranged at a constricted portion at a corresponding position .   2. The information device with a fingerprint authentication function according to claim 1, wherein inclined surfaces are formed at a front end portion and a rear end portion of the recessed portion.   The information device with a fingerprint authentication function according to claim 1, wherein the fingerprint sensor is elastically supported.

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