JP2009099113A - Portable terminal device and fingerprint authenticating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device and a fingerprint authenticating method by which the success probability of reading a fingerprint during fingerprint authentication can be enhanced. <P>SOLUTION: A fingerprint authenticating part 8 has two different fingerprint reading parts, a first fingerprint reading part 81 and a second fingerprint reading part 82. Although an authentication processing part 83 compares fingerprint data D1 read by the first fingerprint reading part 81 and fingerprint data D2 read by the second fingerprint reading part 82 with normal fingerprint data DR to thereby perform authentication processing, the authentication processing part 83 performs authentication according to preset setting contents when only one of the fingerprint data D1 and D2 is suitable to the normal fingerprint data DR. Namely, change is made on the basis of previous setting as to whether an authentication failure is determined when only one of the fingerprint data D1 and D2 is suitable, or whether authentication success is determined even when only one of the fingerprint data D1 and D2 is suitable. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a portable terminal device capable of authenticating a specific individual by fingerprint authentication and a fingerprint authentication method.

  In recent years, mobile terminal devices such as mobile phones have become very popular, and many people have their own mobile terminal devices.

  Many of these portable terminal devices possessed by individuals store and hold information that should not be leaked to the outside, such as personal information of the owner. For this reason, some of these portable terminal devices are configured to perform personal authentication and do not respond to an operation of a person who does not succeed in authentication, or disclose only limited information.

  For example, Patent Document 1 discloses a portable terminal device provided with fingerprint authentication means.

Further, in Patent Document 2, in order to improve the accuracy of personal authentication, an individual who performs personal authentication using a combination of any two or more of authentication means using face images, authentication means using voice, and fingerprint authentication means. An authentication apparatus and method are disclosed.
JP 2006-311441 A JP 2000-259828 A

  The portable terminal device disclosed in Patent Document 1 described above is provided with a fingerprint authentication means at the hinge portion in a foldable portable terminal, and the user reads the fingerprint by touching or tracing the finger to perform personal authentication. Is going. Patent Document 2 does not describe details of a specific operation at the time of fingerprint authentication.

  By the way, many portable terminal devices (especially cellular phones) have a small casing size, and often cannot take a large fingerprint authentication space. Therefore, for example, in the above-described portable terminal device of Patent Document 1, if the user merely traces a finger lightly on the fingerprint authentication device, it depends on factors such as the speed at which the finger is traced and the area of the finger that is traced. In some cases, the fingerprint authentication device cannot read the fingerprint. Also, depending on the state of the user's finger, the fingerprint authentication device may not be able to read the fingerprint. In other words, in the case of a fingerprint authentication device that reads a fingerprint by capacitance, the fingerprint may not be read if the finger is wet or wet, and the fingerprint that is read optically In the case of the authentication device, there are cases where the fingerprint cannot be read if the finger is dirty.

  Therefore, in a mobile terminal device having a fingerprint authentication device, even if a user attempts to perform fingerprint authentication and use each function of the mobile terminal device, the fingerprint authentication device cannot read the fingerprint successfully at one time, which may be inconvenient. There was a disadvantage of being.

  The present invention has been made to solve the above disadvantages, and an object of the present invention is to provide a portable terminal device and a fingerprint authentication method that improve the success probability of fingerprint reading at the time of fingerprint authentication.

  In order to solve the above-described problem, a portable terminal device according to a first aspect of the present invention includes a fingerprint authentication unit that performs fingerprint authentication processing and a storage unit, and the fingerprint authentication unit includes a plurality of fingerprint readers for reading fingerprints. The fingerprint reading unit and the plurality of fingerprint data read and generated by the plurality of fingerprint reading units are compared with the normal fingerprint data which is the fingerprint data of the legitimate user, and all the fingerprint data matches the normal fingerprint data. If it is determined that the authentication is successful, if all fingerprint data does not match the regular fingerprint data, it is determined that the authentication is unsuccessful, and only a part of the fingerprint data matches the regular fingerprint data. Includes an authentication processing unit that changes whether it is determined that the authentication is successful or whether the authentication is failed based on setting data set in advance and stored in the storage unit.

  According to a second aspect of the present invention, there is provided a fingerprint authentication method for a portable terminal device having a plurality of fingerprint reading units for reading a fingerprint, wherein a plurality of fingerprint data read and generated by the plurality of fingerprint reading units is obtained. Compared with the regular fingerprint data which is the fingerprint data of a legitimate user, if all fingerprint data matches the regular fingerprint data, it is determined that the authentication is successful, and all fingerprint data matches the regular fingerprint data. If not, it is determined that the authentication has failed, and if only part of the fingerprint data matches the regular fingerprint data, it is determined that the authentication has succeeded based on the preset setting data, or authentication Change whether to determine failure.

  ADVANTAGE OF THE INVENTION According to this invention, the portable terminal device and fingerprint authentication method which improve the success probability of the fingerprint reading in the case of fingerprint authentication can be provided.

  Hereinafter, a mobile phone 100 as an example of the mobile phone device of the present invention will be described.

  FIG. 1 is a block diagram illustrating an example of a configuration of a mobile phone 100 described in the present embodiment.

  As shown in FIG. 1, a mobile phone 100 according to the present embodiment includes a communication unit 1, an operation unit 2, a voice processing unit 3, a speaker 4, a microphone 5, a display unit 6, a storage unit 7, a fingerprint authentication unit 8, and a control unit. 9

  The communication unit 1 captures a plurality of communication systems, performs wireless communication with a base station (not shown) connected to a communication network, and transmits and receives various data. The various data includes voice data at the time of voice call, mail data at the time of mail transmission / reception, web page data at the time of browsing the web, and the like.

  The operation unit 2 has keys to which various functions are assigned, such as a power key, a call key, a numeric key, a character key, a direction key, a determination key, and a call key. These keys are operated by the user. If so, a signal corresponding to the operation content is generated and output to the control unit 9 as a user instruction.

  The audio processing unit 3 processes an audio signal output from the speaker 4 and an audio signal input from the microphone 5. That is, the sound input from the microphone 5 is amplified, analog / digital converted, and further subjected to signal processing such as encoding, converted into digital sound data, and output to the control unit 9. Further, the audio data supplied from the control unit 9 is subjected to signal processing such as decoding, digital / analog conversion, amplification, etc., converted into an analog audio signal and output to the speaker 4.

  The display unit 6 is a display device configured by, for example, a liquid crystal display (LCD) or an organic EL (Electro Luminescence) panel, and performs display according to various operations of the mobile phone 100. For example, when a call is made or received, a call destination is displayed, when a mail is sent / received, a mail transmission screen or a call reception screen is displayed, a standby screen is displayed, or the like is displayed.

  The storage unit 7 stores various data used for various processes of the mobile phone 100. For example, a computer program executed by the control unit 9, an address book for managing personal information such as a telephone number or an e-mail address of a communication partner, an audio file for playing a ring tone or an alarm sound, an image file for a standby screen Various setting data, temporary data used in the process of the program, and the like are stored. The above-described storage unit 7 is configured by, for example, a nonvolatile storage device (nonvolatile semiconductor memory, hard disk device, optical disk device, etc.), a randomly accessible storage device (eg, SRAM, DRAM), or the like.

  The storage unit 7 stores setting data described later.

  The storage unit 7 stores regular fingerprint data DR used by the fingerprint authentication unit 8 (to be described later) during fingerprint authentication. The regular fingerprint data DR is fingerprint data registered by a regular user when the mobile phone 100 is purchased, for example.

  The fingerprint authentication unit 8 reads the user's fingerprint and performs personal authentication processing.

  Details of the fingerprint authentication unit 8 and fingerprint authentication processing will be described later.

  The control unit 9 comprehensively controls the overall operation of the mobile phone 100. That is, various processes of the mobile phone 100 (voice calls performed via a circuit switching network, creation and transmission / reception of e-mails, browsing of Internet websites, etc.) are executed in an appropriate procedure according to the operation of the operation unit 2. Thus, the operation of each block described above (transmission / reception of signals in the communication unit 1, input / output of audio in the audio processing unit 3, display of images on the display unit 6, etc.) is controlled. Further, when fingerprint authentication is requested in response to an operation input from the operation unit 2 or the like, the fingerprint authentication unit 8 is caused to execute fingerprint authentication processing.

  Then, the response to the operation input from the operation unit 2 is changed according to the authentication result notified from the fingerprint authentication unit 8. That is, if the fingerprint authentication is successful, the current user is regarded as a regular user, and the operation input is accepted. If the fingerprint authentication is unsuccessful, the current user is not a regular user. In response to the operation input, the fact that the authentication has failed is displayed on the display unit 6. Thereby, the security of the mobile phone 100 is improved.

  Hereinafter, fingerprint authentication processing executed by the fingerprint authentication unit 8 and the fingerprint authentication unit 8 of the present embodiment will be described.

  The fingerprint authentication unit 8 performs fingerprint authentication by reading the user's fingerprint and comparing the read fingerprint with the regular fingerprint data DR stored in the storage unit 7.

  The fingerprint authentication unit 8 includes a first fingerprint reading unit 81, a second fingerprint reading unit 82, and an authentication processing unit 83. After the user's fingerprint is read by these two fingerprint reading units, personal authentication by the authentication processing unit is performed. I do.

  The first fingerprint reading unit 81 and the second fingerprint reading unit 82 are reading units for reading a fingerprint.

  The fingerprint reader has a strip-shaped sensor, and a sweep type that acquires a two-dimensional image of the entire fingerprint by sliding a finger placed on the sensor at a constant speed, or acquires the entire fingerprint at once. There are area types. Among them, optical sensors such as total reflection optical, optical path separation optical, finger diffused light detection optical, finger internal property detection optical, surface protrusion irregular reflection optical, etc. There are non-optical sensors such as a capacitive type, an electric field type, a thermal type, a pressure sensitive type, and an ultrasonic type.

  As the fingerprint reading unit of the present invention, any of the reading devices described above may be adopted, but it is desirable to select a sweep type that realizes a reading device with a small size in consideration of the portability of the mobile phone 100.

  The sweep type fingerprint reader has a rectangular reading surface that is sufficiently shorter than the length of the finger and has a small area. While the user's finger moves with respect to the reading surface, or when the reading surface moves with respect to the finger as the entire mobile phone 100 moves, the fingerprint of the part in contact with the reading surface is read.

  Here, in the present embodiment, different reading methods are adopted for the first fingerprint reading unit 81 and the second fingerprint reading unit 82. For example, when the first fingerprint reading unit 81 is a capacitance type, the second fingerprint reading unit 82 is a pressure-sensitive type, and when the first fingerprint reading unit 81 is an optical path separation method optical type, 2 The fingerprint reading unit 82 is set to an ultrasonic method. Thus, by making the reading methods of the first fingerprint reading unit 81 and the second fingerprint reading unit 82 different, even if one reading unit fails to read a fingerprint, the other reading unit succeeds in reading. The success rate of fingerprint reading is improved.

  Further, the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are provided on different surfaces of the casing of the mobile phone 100.

  The housing of the mobile phone 100 will be described.

  FIG. 2 is a diagram showing an example of the appearance of the casing of the mobile phone 100.

  2A is a diagram viewed from the front surface 101 side, and FIG. 2B is a diagram viewed from the back surface 102 side.

  As shown in FIG. 2, the mobile phone 100 has a front surface 101, a back surface 102, side surfaces 103 and 104, an upper surface 105, and a lower surface 106.

  On the surface 101, an operation unit 2, a speaker 4, a microphone 5, and a display unit 6 are provided.

  The first fingerprint reading unit 81 and the second fingerprint reading unit 82 of the present embodiment are provided on two opposing surfaces or two adjacent surfaces among the six surfaces of the mobile phone 100.

  FIG. 3 is a diagram showing an installation example when the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are installed on two opposing surfaces.

  FIG. 3A shows an example in which the first fingerprint reading unit 81 is provided on the front surface 101 of the mobile phone 100 and the second fingerprint reading unit 82 is provided on the back surface 102. In this case, it is necessary to arrange the first fingerprint reading unit 81 at a position that does not interfere with the installation of the operation unit 2, the speaker 4, the microphone 5, and the display unit 6 installed on the surface 101. For example, as shown in FIG.

  In the installation example shown in FIG. 3A, as shown in FIG. 3B, it is assumed that the first fingerprint reading unit 81 reads the thumb of the thumb and the second fingerprint reading unit 82 reads the fingerprint of the index finger. Of course, the first fingerprint reader 81 may read the index finger and the second fingerprint reader 82 may read the thumb fingerprint.

  Alternatively, the second fingerprint reading unit 82 may be provided on the front surface 101 and the first fingerprint reading unit 81 may be provided on the back surface 102.

  Alternatively, the first fingerprint reading unit 81 may be provided on the side surface 103 and the second fingerprint reading unit 82 may be provided on the side surface 104. This is shown in FIG. In this case, it is assumed that the cellular phone 100 is held as shown in FIG. 3D and the first fingerprint reading unit 81 reads the thumb and the second fingerprint reading unit 82 reads the fingerprint of the index finger. However, even when the mobile phone 100 is held in the opposite direction (in FIG. 3 (d), the surface 101 faces the left side of the drawing, but the surface 101 faces the right side of the drawing on the contrary). The first fingerprint reader 81 may read the index finger and the second fingerprint reader 82 may read the thumb fingerprint.

  FIG. 4 is a diagram showing an installation example when the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are installed on two adjacent surfaces.

  FIG. 4A is a diagram illustrating an example in which the first fingerprint reading unit 81 is installed on the side surface 103 and the second fingerprint reading unit 82 is installed on the lower surface 106. In this case, it is desirable that the position of the first fingerprint reading unit 81 in the side surface 103 is located on the lower surface 106 rather than the center of the side surface 103 in consideration of easy finger touch.

  Needless to say, the first fingerprint reading unit 81 may be installed on the side surface 104, contrary to FIG. Alternatively, the second fingerprint reading unit 82 may be installed on the upper surface 105. However, in this case, it is desirable that the position of the first fingerprint reading unit 81 on the side surface 103 is located on the upper surface 105 rather than the center of the side surface 103.

  Further, the second fingerprint reading unit 82 may be installed on the side surface 103 and the first fingerprint reading unit 81 may be installed on the lower surface 106.

  FIG. 4B is a diagram illustrating an example in which the first fingerprint reading unit 81 is installed on the back surface 102 and the second fingerprint reading unit 82 is installed on the side surface 104. In this case, considering the ease of touching the finger, the position of the first fingerprint reading unit 81 in the back surface 102 is preferably set to a position from the side surface 104 rather than the center of the back surface 102.

  Of course, the 2nd fingerprint reading part 82 may be installed in the side surface 103 contrary to FIG.4 (b). However, in this case, it is desirable that the position of the first fingerprint reading unit 81 on the back surface 102 is located on the side surface 103 rather than the center of the back surface 102.

  Further, the first fingerprint reading unit 81 may be installed on the surface 101. In this case, it is necessary to arrange the first fingerprint reading unit 81 at a position that does not interfere with the installation of the operation unit 2, the speaker 4, the microphone 5, and the display unit 6 installed on the surface 101 (not shown).

  FIG. 4C is a diagram showing an example in which the first fingerprint reading unit 81 is installed on the front surface 101 and the second fingerprint reading unit 82 is installed on the lower surface 106. In this case, it is necessary to arrange the first fingerprint reading unit 81 at a position that does not interfere with the installation of the operation unit 2, the speaker 4, the microphone 5, and the display unit 6 installed on the surface 101. For example, as shown in FIG. 4C, it may be installed at the lower part of the operation unit 2.

  Of course, contrary to FIG. 4C, the first fingerprint reading unit 81 may be provided on the back surface 102. Alternatively, the second fingerprint reading unit 82 may be installed on the upper surface 105. However, in this case, it is desirable that the position of the first fingerprint reading unit 81 on the surface 101 is located on the upper surface 105 rather than the center of the surface 101. That is, it is desirable that the display unit 6 be further installed on the upper surface 105.

  Further, the second fingerprint reading unit 82 may be installed on the front surface 101, and the first fingerprint reading unit 81 may be installed on the lower surface 106.

3 and 4 described above, when the positions of the first fingerprint reading unit 81 and the second fingerprint reading unit 82 in each surface are not particularly mentioned, as shown in FIGS. In addition, the first fingerprint reading unit 81 or the second fingerprint reading unit 82 may be installed near the center of each surface, or may be installed at a position shifted from the center so as to improve usability. The first fingerprint reading unit 81 and the second fingerprint reading unit 82 are configured so that the user can easily touch (trace) the first fingerprint reading unit 81 and the second fingerprint reading unit 82 simultaneously. Should be installed so that the distance between

FIG. 6 is a diagram illustrating an installation example when the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are installed on the same surface and adjacent positions.

FIG. 6A is a diagram illustrating an example in which a first fingerprint reading unit 81 and a second fingerprint reading unit 82 are adjacently installed between the display unit 6 and the operation unit 2 on the surface 101. In this case, considering the ease of touching with one finger, the first fingerprint reading unit 81 is installed at a position close to the display unit 6 on the surface 101, and the second fingerprint is positioned near the operation unit on the surface 101. A reading unit 82 is installed. The first fingerprint reading unit 81 and the second fingerprint reading so that the user can easily and continuously touch (trace) the finger with the first fingerprint reading unit 81 and the second fingerprint reading unit 82. What is necessary is just to install so that the distance with the part 82 may not leave | separate largely. In FIG. 6A, the respective fingerprint reading units are arranged in parallel to the width direction of the mobile terminal 100, but may be arranged at right angles or obliquely with respect to the width direction.
FIG. 6B is a diagram illustrating an example in which the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are disposed adjacent to the back surface 102. Also in this case, it is arranged parallel to the width direction of the mobile terminal 100 as in the case of FIG. 1A, but it may be arranged at a right angle or obliquely with respect to the width direction.
In the above example, the front surface 101 and the back surface 102 of the mobile terminal 100 have been described. However, the mobile terminal 100 may be disposed on the right side surface 103, the left side surface 104, the upper surface 105, or the lower surface 106.

  In the description related to FIG. 6 described above, when the positions of the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are not particularly touched, as shown in FIG. The first fingerprint reading unit 81 or the second fingerprint reading unit 82 may be installed near the center, or may be installed at a position shifted from the center so as to improve usability. The first fingerprint reading unit 81 and the second fingerprint reading so that the user can easily and continuously touch (trace) the finger with the first fingerprint reading unit 81 and the second fingerprint reading unit 82. What is necessary is just to install so that the distance with the part 82 may not leave | separate largely.

  The authentication processing unit 83 uses the fingerprint data read by the first fingerprint reading unit 81 and the second fingerprint reading unit 82 described above and compares them with the regular fingerprint data DR stored in the storage unit 7. The first fingerprint reader 81 and the second fingerprint reader 82 authenticate whether the owner of the fingerprint data read by the fingerprint reader 81 is a legitimate user.

  Note that the method for comparing the fingerprint data read by the authentication processing unit 83 with the regular fingerprint data DR to determine whether or not they are the same and authenticating the individual is not limited in the present invention. Existing technologies can be used.

  Hereinafter, an operation example of the authentication processing unit 83 during the authentication process will be described.

  FIG. 5 is a flowchart showing an operation example of the authentication processing unit 83 during the authentication process.

Step ST1:
The authentication processing unit 83 acquires an authentication request from the control unit 9.

Step ST2:
The authentication processing unit 83 acquires fingerprint data read by the first fingerprint reading unit 81 and the second fingerprint reading unit 82, respectively. Hereinafter, the fingerprint data acquired by the first fingerprint reading unit 81 is referred to as D1, and the fingerprint data acquired by the second fingerprint reading unit 82 is referred to as D2.

Step ST3:
The authentication processing unit 83 compares the fingerprint data D1 and D2 with the normal fingerprint data DR.

  If only one of the fingerprint data D1 and D2 is compatible with the normal fingerprint data DR, the fingerprint data D1 and D2 are both in step ST4. If both the fingerprint data D1 and D2 are compatible with the normal fingerprint data DR, the fingerprint data D1 and D2 are both If the regular fingerprint data DR is matched, the process proceeds to step ST6.

Step ST4:
The authentication processing unit 83 refers to setting data describing settings when only one of the fingerprint data D1 and D2 is compatible with the normal fingerprint data DR. That is, even when only one of them is matched, whether to determine that fingerprint authentication has succeeded or to be determined to have failed fingerprint authentication is set in advance and stored in the storage unit 7 as setting data. In this step, the authentication processing unit 83 refers to this setting and follows the setting. This setting is performed in advance by the user via the operation unit 2 or the like, for example, and is stored in the storage unit 7 as setting data.

  If only one of the fingerprint data D1 and D2 is set in the setting data, the setting proceeds to step ST5, and only one of the fingerprint data D1 and D2 is matched. If the authentication is successful, the process proceeds to step ST6.

Step ST5:
The authentication processing unit 83 determines that the fingerprint data D1 and D2 are authentication failures.

Step ST6:
The authentication processing unit 83 determines that the fingerprint data D1 and D2 have been successfully authenticated.

Step ST7:
The authentication processing unit 83 notifies the control unit 9 of the authentication results in steps ST5 and ST6.

  As described above, when only one of the fingerprint data D1 and D2 is matched with the normal fingerprint data DR, the authentication processing unit 83 performs authentication in accordance with preset setting contents. That is, whether only one of the fingerprint data D1 and D2 is matched is determined to be an authentication failure or whether only one of the fingerprint data D1 and D2 is matched is determined to be an authentication success. It changes according to the setting stored in advance. For this reason, in the mobile phone 100 of the present embodiment, when the user wants to enhance the security of the mobile phone 100 or the like, if only one of the fingerprint data D1 and D2 is matched in advance, the authentication fails. In consideration of the possibility of fingerprint reading errors of the first fingerprint reading unit 81 and the second fingerprint reading unit 82, only the fingerprint data of one fingerprint data DR and You only need to set it to authenticate even if it conforms.

  As described above, according to the mobile phone 100 of the present embodiment, two different fingerprint reading units, the first fingerprint reading unit 81 and the second fingerprint reading unit 82, are provided. For this reason, it becomes twice as compared with the case where there is one fingerprint reading unit, and the probability of failure in reading the fingerprint can be reduced. In addition, since the first fingerprint reading unit 81 and the second fingerprint reading unit 82 employ different types of fingerprint reading devices, reading failures due to conditions can be reduced. That is, for example, when the first fingerprint reading unit 81 is a capacitance type fingerprint reading device, there is an increased risk of reading failure when the user's fingertip is wet. When the fingerprint reading unit 82 is, for example, a pressure-sensitive fingerprint reading device, it is highly probable that reading can be performed even when the user's fingertip is wet. Further, when the first fingerprint reading unit 81 is an optical fingerprint reading device, there is an increased risk of reading failure when the user's fingertip is dirty, but the second fingerprint reading unit 82 However, for example, in the case of a temperature-sensitive fingerprint reader, there is a possibility that reading can be performed even if the user's fingertip is dirty.

  Further, since the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are provided on either facing surface or two adjacent surfaces of the housing, the user easily touches both of the fingers. Or it is designed so that it can be traced.

  Furthermore, according to the mobile phone 100 of the present embodiment, the authentication processing unit 83 uses the fingerprint data D1 read by the first fingerprint reading unit 81 and the fingerprint data D2 read by the second fingerprint reading unit 82 as normal fingerprint data. Authentication processing is performed by comparing with DR. When only one of fingerprint data D1 and D2 matches with normal fingerprint data DR, authentication is performed according to the contents of preset setting data. That is, whether only one of the fingerprint data D1 and D2 is matched is determined to be an authentication failure or whether only one of the fingerprint data D1 and D2 is matched is determined to be an authentication success. It changes according to a preset setting. For this reason, when the user wants to enhance the security of the mobile phone 100, etc., it can be set in advance to determine that authentication has failed if only one of the fingerprint data D1 and D2 is compatible. In consideration of the possibility of a fingerprint reading error in the first fingerprint reading unit 81 and the second fingerprint reading unit 82, it is set to authenticate even if only one fingerprint data is matched with the regular fingerprint data DR. This will improve usability.

  The present invention is not limited to the embodiment described above.

  That is, when implementing the present invention, various modifications, combinations, sub-combinations, and alternatives may be made to the components of the above-described embodiments within the technical scope of the present invention or an equivalent scope thereof.

  In the above-described embodiment, the fingerprint authentication unit 8 has two fingerprint reading units. However, the present invention is not limited to this, and may be configured to have, for example, three or more fingerprint reading units. .

  In the above-described embodiment, the first fingerprint reading unit 81 and the second fingerprint reading unit 82 are provided on the opposite surface or two adjacent surfaces of the casing of the mobile phone 100. Is not limited. For example, particularly when a plurality (three or more) of fingerprint readers are provided, a plurality (for example, both upper and lower and left and right ends) may be provided on the same surface of the housing.

  When three or more fingerprint reading units are provided, the authentication processing unit 83 determines that the authentication is successful when all the fingerprint data is matched with the regular fingerprint data DR, and all the fingerprint data is the regular fingerprint data DR. If it is determined that the authentication is unsuccessful and if only a part of the fingerprint data is matched with the regular fingerprint data DR, it is determined whether the authentication is unsuccessful or the authentication is successful according to a predetermined setting. It may be determined.

FIG. 1 is a block diagram showing an example of the configuration of the mobile phone according to the present embodiment. FIG. 2 is a diagram showing an example of the appearance of the casing of the mobile phone. FIG. 3 is a diagram illustrating an installation example when the first fingerprint reading unit and the second fingerprint reading unit are installed on two opposing surfaces. FIG. 4 is a diagram illustrating an installation example when the first fingerprint reading unit and the second fingerprint reading unit are installed on two adjacent surfaces. FIG. 5 is a flowchart illustrating an operation example during authentication processing of the authentication processing unit. FIG. 6 is a diagram illustrating an installation example when the first fingerprint reading unit and the second fingerprint reading unit are installed on the same surface and adjacent positions.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Mobile phone, 101 ... Front surface, 102 ... Back surface, 103 ... Side surface, 104 ... Side surface, 105 ... Upper surface, 106 ... Lower surface, 1 ... Communication part, 2 ... Operation part, 3 ... Sound processing part, 4 ... Speaker, 5 DESCRIPTION OF SYMBOLS 6 ... Display part 7 ... Memory | storage part 8 ... Fingerprint authentication part 81 ... 1st fingerprint reading part 82 ... 2nd fingerprint reading part 83 ... Authentication process part 9 ... Control part D1 ... 1st Fingerprint data acquired by the fingerprint reading unit 81, D2... Fingerprint data acquired by the second fingerprint reading unit 82, DR... Regular fingerprint data.

Claims (6)

A fingerprint authentication unit for performing fingerprint authentication processing;
A storage unit;
Have
The fingerprint authentication unit
A plurality of fingerprint readers for reading fingerprints;
The plurality of fingerprint data read and generated by the plurality of fingerprint readers is compared with the regular fingerprint data that is the fingerprint data of a legitimate user, and if all the fingerprint data matches the regular fingerprint data, the authentication is successful. If all the fingerprint data does not match the regular fingerprint data, it is determined that the authentication has failed, and if only a part of the fingerprint data matches the regular fingerprint data, it is set in advance. Based on the setting data stored in the storage unit, an authentication processing unit that changes whether to determine whether authentication is successful or authentication failure;
A portable terminal device characterized by comprising: The portable terminal device according to claim 1, wherein the plurality of fingerprint reading units read fingerprints by at least two types of fingerprint reading methods. The fingerprint authentication unit has two fingerprint reading units, a first fingerprint reading unit and a second fingerprint reading unit,
The said 1st fingerprint reading part and the said 2nd fingerprint reading part are each provided in two opposing surfaces among each surface which the housing | casing of the said portable terminal device has. The portable terminal device described. The fingerprint authentication unit has two fingerprint reading units, a first fingerprint reading unit and a second fingerprint reading unit,
The said 1st fingerprint reading part and the said 2nd fingerprint reading part are each provided in two adjacent surfaces among each surface which the housing | casing of the said portable terminal device has. The Claim 2 characterized by the above-mentioned. The portable terminal device described. The fingerprint authentication unit has two fingerprint reading units, a first fingerprint reading unit and a second fingerprint reading unit,
The first fingerprint reading unit and the second fingerprint reading unit are provided on the same surface and adjacent to each other among the surfaces of the casing of the mobile terminal device. The mobile terminal device according to claim 2. A fingerprint authentication method for a portable terminal device having a plurality of fingerprint reading units for reading a fingerprint,
The plurality of fingerprint data read and generated by the plurality of fingerprint readers is compared with the regular fingerprint data that is the fingerprint data of a legitimate user, and if all the fingerprint data matches the regular fingerprint data, the authentication is successful. If all the fingerprint data does not match the regular fingerprint data, it is determined that the authentication has failed, and if only a part of the fingerprint data matches the regular fingerprint data, it is set in advance. Fingerprint authentication method that changes whether authentication is successful or authentication failure based on the set data.