JP2005203913A - Portable electronic device and personal authentication method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable accurate personal authentication by defining the positional relation between a camera and an eyeball in performing personal authentication by utilizing irises of eyeballs as biological information of the user of an portable electronic device. <P>SOLUTION: Prior to the use of a folding type cellular phone, an eye 21 of the user used for personal authentication to be reflected is reflected on a mirror 4 provided on the outside of the upper main body 1 of the folding type cellular phone, and the relative distance between the user and the folding type cellular phone or the height are adjusted while seeing the image of the eye 21 reflected on the mirror 4 so that the outer shape of the pupil 22 of the eye 21 overlaps on the outer shape of a camera window 5. After that, the user depresses an operating button in a step of finishing the adjustment, thereby photographing the eye 22 of the user with the camera through the camera window 5. In this way, the pupil 22 can be always photographed with the camera in a state that the camera approximately matches the center of the pupil 22. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable electronic device and a personal authentication method for the portable electronic device, and in particular, a portable electronic device such as a mobile phone, a personal digital assistant (PDA), or a portable personal computer recognizes a user with an iris (eye iris). The present invention relates to a portable electronic device for recognition using technology and a personal authentication method for the portable electronic device.

  In recent years, the development of portable electronic devices has been remarkable, and a large amount of personal information can be stored. However, as such convenience increases, there is an increasing demand for the portable electronic device itself to recognize the user in order to prevent confidential leakage and use by a third party.

  In order to satisfy such requirements, various techniques for performing personal authentication using biometric information (for example, fingerprints, handprints, faces, irises, retinas, voiceprints, etc.) of users of portable electronic devices have been proposed. (For example, refer to Patent Documents 1 and 2). That is, Patent Literature 1 discloses an input means for inputting user's biometric information, a display means for displaying the input biometric information, and a user who has been registered in advance based on the input biometric information. There is disclosed a portable electronic device characterized by having an authentication means for performing display and displaying an index for designating the size and position of biological information input by the display means.

  Patent Document 2 discloses an iris capturing unit having a front surface for capturing an iris image of the eye, a lens having an image plane disposed in front of the front surface of the iris capturing unit, and an iris capturing unit for the lens. The template is extracted from the stored iris image, the mirror arranged on the opposite side of the mirror, the irradiation device arranged on the side of the mirror, the memory for storing the iris image captured by the iris capturing means A communication device is disclosed that includes a telephone security module that includes a processor for processing and a communication interface for transmitting a template to a central office.

JP 2003-317100 A (page 3) JP 2002-530976 A (page 11)

  However, when performing personal authentication using iris (eyeball iris) as biological information of the user of the portable electronic device, the positional relationship between the camera and the eyeball is not determined in the communication device described in Patent Document 2, and accurate. Personal authentication may not be possible.

  On the other hand, in Patent Document 1, when performing personal authentication using a face image with a camera-equipped mobile phone, an image of the front direction or a plurality of face directions is prepared in advance as a template, and the face image captured from the camera is prepared. And the face image of each orientation of the template is compared, and the index for determining the eye position is displayed on the display, and the eye position of the registrant's face input from the camera is the index Although it is described that the face image is registered by giving an instruction so as to match the two points, this is only personal authentication with the face image, and the positional relationship between the camera and the eyeball is accurately determined. Thus, it is not disclosed that personal authentication is performed using image data of an eyeball photographed by a camera.

  The present invention has been made in view of the above points, and is a portable electronic device and a portable electronic device that can accurately identify the positional relationship between a camera and an eyeball and perform personal authentication using image data of the eyeball photographed by the camera. The purpose is to provide a personal authentication method.

  In order to achieve the above object, a portable electronic device according to a first aspect of the present invention is a portable electronic device having a function of performing personal authentication using iris data of a user's pupil imaged with a mounted camera, It has a mirror that is provided at a predetermined external position of the device main body and projects a user's eyes, and a camera window of a camera provided in the mirror. According to the present invention, the center of the pupil and the center of the camera window can be substantially matched by adjusting the external shape of his / her pupil to the external shape of the camera window while looking at the mirror.

  In order to achieve the above object, in the portable electronic device of the second invention, the camera window of the first invention is set to have a circular shape similar to the outer shape of the user's pupil. The camera is photographed while the outer shape of the user's pupil is matched with the outer shape. According to the present invention, the user's pupil can be photographed by the camera in a state where the center of the pupil and the center of the camera window are substantially matched.

  In order to achieve the above object, a portable electronic device according to a third aspect of the invention is a portable electronic device having a function of performing personal authentication using iris data of a user's pupil imaged with an installed camera. The mirror that reflects the user's eyes, the camera window provided in the mirror, and the display figure displayed in the mirror so as to surround the camera window. It is characterized by having. According to the present invention, the center of the pupil and the center of the camera window are substantially matched by adjusting the external shape of the pupil to a display figure having a diameter larger than that of the camera window while looking at the mirror. Can do.

  In order to achieve the above object, the portable electronic device of the fourth invention sets the display graphic of the third invention to a circle similar to the outer shape of the user's pupil, and the user's pupil is displayed on the display graphic. The camera is photographed in a state in which the outer shapes are combined. In the present invention, it is possible to magnify and photograph only a part of the pupil passing through the camera window in a state where the center of the pupil and the center of the camera window are substantially matched.

  In order to achieve the above object, the portable electronic device of the fifth invention corresponds to the focal position of the camera when the display figure of the third invention is matched with the display figure of the user's pupil. It is characterized by a circular shape set to a radius such that the user's pupil is located at the optimum position. According to the present invention, it is possible to accurately capture an image of the pupil in a state where the center of the pupil and the center of the camera window are substantially matched.

  In order to achieve the above object, according to a sixth aspect of the personal authentication method for a portable electronic device, iris data of an authorized user's pupil is stored in advance in a storage unit, and is mirrored at a predetermined external position of the device body. And a personal authentication method for a portable electronic device equipped with a camera, wherein a camera window having a circular outer shape is provided in the mirror, wherein the first step of projecting a user's eyes on the mirror, A second step of adjusting the outer shape of the user's pupil to the outer shape of the window, and a third step of photographing the user's pupil through the camera window with the camera in a state where the outer shape of the user's pupil is adjusted to the outer shape of the camera window Fourth step of performing personal authentication based on the comparison result by comparing and comparing the iris data obtained by photographing in the step and the third step with the iris data of the pupil of the authorized user read from the storage unit It is characterized by including.

  In the present invention, the iris data of the user's pupil photographed through the camera window by the camera with the contour of the user's pupil matched to the contour of the camera window, and the iris data of the legitimate user's pupil read from the storage unit Can be compared, and personal authentication can be performed based on the comparison result.

  Furthermore, in order to achieve the above object, according to a personal authentication method for a portable electronic device of a seventh invention, iris data of a legitimate user's pupil is stored in advance in a storage unit, and a mirror is placed at a predetermined external position of the device body. And a personal authentication method for a portable electronic device equipped with a camera, wherein a camera window having a circular outer shape is provided in the mirror, wherein the first step of projecting a user's eyes on the mirror, The second step of matching the user's pupil outline to the display graphic displayed in the mirror so as to surround the window, and the camera using the camera window through the camera window with the display graphic matched to the user's pupil outline The third step of photographing the pupil of the person, the iris data obtained by photographing in the third step, and the iris data of the legitimate user's pupil read from the storage unit are compared and collated, and the collation result is obtained. A fourth step of personal authentication based on Characterized in that it contains.

  In the present invention, the iris data obtained by photographing the user's pupil through the camera window with the camera in a state in which the outer shape of the user's pupil is matched with the display figure having a diameter larger than that of the camera window, and read out from the storage unit Compared with the iris data of the eyes of the authorized user, personal authentication can be performed based on the comparison result.

  According to the present invention, the center of the pupil is adjusted by adjusting the external shape of his / her pupil to the external shape of the camera window or a display figure having a diameter larger than the external shape of the camera window while looking at the mirror. Since the center of the camera and the center of the camera window are substantially matched, the positional relationship between the camera and the user's pupil can be narrowed down to a certain extent that can be predicted compared to the conventional method. The acquired iris data can be acquired, and stable personal authentication can be realized.

  Further, according to the present invention, the iris obtained by photographing the user's pupil through the camera window with the camera in a state in which the outer shape of the user's pupil is matched to the camera window or a display figure having a larger diameter than the camera window. Compared to the data and iris data of the legitimate user's eyes read from the storage unit, personal authentication is performed based on the verification result, so personal authentication is easier and more accurate than before. Can do.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view of an embodiment of a portable electronic device according to the present invention, FIG. 2 is an enlarged perspective view of a main part of FIG. 1, and FIG. 3 is a block diagram of an embodiment of the portable electronic device according to the present invention. The figure is shown. In the drawings, the same components are denoted by the same reference numerals.

  The portable electronic device of the present embodiment is a foldable mobile phone, and in the folded state (closed state), as shown in FIG. 1, the upper body 1 and the lower body 2 are hinged to each one end portion as a fulcrum. As shown in FIG. In the present embodiment, a relatively large quadrangular mirror 4 and a substantially central portion of the mirror 4 are disposed at predetermined positions on the upper surface opposite to the lower body 2 of the upper body 1 as shown in FIGS. A feature is that a camera window 5 is provided. Further, an operation button 6 having a shutter function of a camera having a camera window is provided on the side surface of the lower main body 2, and an antenna 7 is projected from the upper side surface opposite to the hinge 3 of the upper main body 1. ing.

  FIG. 1 shows a closed state (folded state) in which the upper main body 1 and the lower main body 2 are arranged so as to face each other in close contact with each other. In this state, iris data of the pupil is photographed as described later. Further, when used as a normal telephone, the inner surfaces of the upper main body 1 and the lower main body 2 are opened with a predetermined angle apart with the hinge 3 as a fulcrum.

  The camera 8 shown in FIG. 3, the display unit 9, and a speaker 10 that generates a received voice are provided on the inner surface of the upper main body 1, and the transmission voice collection shown in FIG. A sound microphone 11 and a key operation unit 12 including numeric keys and other various keys are provided. Further, inside one or both of the upper main body 1 and the lower main body 2, there are a control unit 13, a storage unit 14, a radio unit 15, a signal processing unit 16, an audio processing unit 17, and a display drive shown in FIG. 3. A portion 18 is provided.

  This foldable mobile phone operates as follows during normal use. In FIG. 3, the transmitted voice collected by the microphone 11 is converted into a voice signal which is an electric signal by the microphone 11, and then converted into a predetermined signal form through the voice processing unit 17 and the signal processing unit 16, and further. The radio signal is converted into a radio signal by the radio unit 15 and transmitted to the nearest base station (not shown) via the antenna 7. The base station is connected to an upper public network, and outputs the received radio signal to the other terminal of the mobile phone.

  On the other hand, the audio signal from the partner terminal is wirelessly transmitted via the base station, received by the antenna 7, wirelessly processed by the wireless unit 15, and demodulated via the signal processing unit 16 and the audio processing unit 17. After being converted into a voice signal, it is subjected to electro-acoustic conversion by the speaker 10 and produced as a received voice. Note that the telephone number or mail text input by the key operation unit 12 is supplied to the display driving unit 18 via the control unit 13, converted into a signal suitable for display, and displayed on the display unit 9. . In addition, when a mail text created by the key operation unit 12 is transmitted, the data is supplied to the signal processing unit 16 via the control unit 13 to be in a predetermined data format, and then is transmitted via the radio unit 15 and the antenna 7. Wirelessly transmitted. On the other hand, the mail text received by the antenna 7 is displayed on the display unit 9 through the wireless unit 15, the signal processing unit 16, the control unit 13, and the display driving unit 18.

  Here, in the present embodiment, the above-described normal use is possible only when it is determined that the user is a valid user by personal authentication using the iris data of the user's eyeball. That is, in the present embodiment, iris data of the user's eyeball (pupil) is stored in advance in the storage unit 14 of FIG. The user knows which side of the eyeball's iris data is stored in the storage unit 14, and the control unit 13 compares the iris data captured by the camera 8 with the iris data from the storage unit 14. Verify personal authentication.

  Next, the personal authentication method of the present embodiment performed before the start of use will be described in more detail. Prior to the start of use of the folding mobile phone according to the present embodiment, as shown in FIG. 4, the user 20 copies the eye 21 used for personal authentication onto the mirror 4 of the folding mobile phone according to the present embodiment. Further, as shown in FIG. 5, while looking at the eye 21 reflected in the mirror 4, the relative distance and height between the user and the folding mobile phone are set so that the outer shape of the pupil 22 of the eye 21 overlaps the outer shape of the camera window 5. Adjust the height.

  Thereafter, when the above adjustment is completed, when the user presses the operation button 6, the pupil 22 of the user 20 is photographed through the camera window 5 by the camera 8 mounted on the folding cellular phone. It should be noted that the positional relationship between the camera 8 and the user's eyes 21 can be adjusted to some extent by the user himself / herself. In addition, the iris data stored in the storage unit 14 is also captured in this manner.

  Therefore, by making the configuration as shown in FIG. 5, the center of the camera 8 and the pupil 22 substantially coincide with each other, the distance suitable for photographing is maintained, and the pupil 22 is narrowed down to a range where the positional relationship can be predicted to some extent. Therefore, if the user is a valid user, the iris data obtained by photographing is substantially the same as the iris data stored in the storage unit 14 in advance. Thereby, the control unit 13 shown in FIG. 3 compares and compares the iris data read from the storage unit 14 with the iris data obtained by photographing with the camera 8 by a known method. If they match, personal authentication that determines that the user is a valid user can always be performed accurately and stably.

  Next, another embodiment of the present invention will be described. FIG. 6 is an external perspective view of another embodiment of the portable electronic device according to the present invention. In the figure, the same components as those in FIG. Compared with the embodiment shown in FIG. 1, the embodiment shown in FIG. 6 is characterized in that a circle 25 concentric with the camera window 5 is printed on the mirror 4 so as to surround the camera window 5.

  Thereby, in this Embodiment, by adjusting the distance between a user's eyes and a camera so that the external shape of the user's pupil reflected in the mirror 4 may overlap with the external shape of the circle 25, the camera window 5 A large pupil can be photographed with a camera. In this case, personal authentication using more accurate iris data is possible.

  In addition, this invention is not limited to the above embodiment, For example, you may make it provide the mirror 4 in the lower main body side. Further, the camera 8 can be used not only for photographing the pupil for personal authentication but also for photographing a subject around the mobile phone. Furthermore, the present invention can also be applied to mobile phones other than the folding type, and can also be applied to portable electronic devices other than mobile phones such as personal digital assistants (PDAs) and portable personal computers. Further, as a circle 25 in FIG. 6 for photographing the pupil larger than the camera window 5, a circle having a radius set so that the eyeball comes to an optimum focal position according to the performance of the camera may be displayed. . Furthermore, the storage unit 14 shown in FIG. 3 may be inside the mobile phone or may be a portable memory connected from the outside.

It is an external appearance perspective view of one Embodiment of the portable electronic device of this invention. It is an expansion perspective view of the principal part of FIG. It is a block diagram of one embodiment of a portable electronic device according to the present invention. It is a figure which shows the state in which a user recognizes self with the portable electronic device of this invention. It is an enlarged view of the principal part of FIG. It is an external appearance perspective view of other embodiment of the portable electronic device of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper main body 2 Lower main body 3 Hinge 4 Mirror 5 Camera window 6 Operation button 8 Camera 13 Control part 14 Memory | storage part 21 User's eyes 22 User's eyes 25 Printed circle

Claims (7)

A portable electronic device having a function of performing personal authentication using iris data of a user's pupil photographed by a mounted camera,
A mirror that is provided at a predetermined external position of the device main body and projects the eyes of the user;
A portable electronic device, comprising: a camera window of the camera provided in the mirror.   The camera window is set to have a circular shape similar to the outer shape of the user's pupil, and the camera is photographed in a state where the outer shape of the user's pupil is aligned with the outer shape of the camera window. The portable electronic device according to claim 1. A portable electronic device having a function of performing personal authentication using iris data of a user's pupil photographed by a mounted camera,
A mirror that is provided at a predetermined external position of the device main body and projects the eyes of the user;
A camera window of the camera provided in the mirror;
And a display graphic displayed in the mirror so as to surround the camera window.   The display figure is set to a circle similar to the outer shape of the user's pupil, and the camera is photographed in a state where the outer shape of the user's pupil is matched to the display figure. The portable electronic device according to claim 3.   The display figure is a circle set to a radius such that the user's pupil is positioned at an optimum position corresponding to the focal position of the camera when the outline of the user's pupil is matched with the display figure. The portable electronic device according to claim 3, wherein the portable electronic device is provided. Equipped with a camera in which iris data of the legitimate user's pupil is stored in advance, a mirror is provided at a predetermined external position of the device body, and a circular camera window is provided in the mirror A method for personal authentication of a portable electronic device,
A first step of projecting a user's eyes on the mirror;
A second step of matching the outer shape of the user's pupil to the outer shape of the camera window;
A third step of photographing the user's pupil through the camera window with the camera in a state in which the contour of the user's pupil is matched to the contour of the camera window;
Fourth step of comparing and collating the iris data obtained in the third step with the iris data of the legitimate user's pupil read from the storage unit and performing personal authentication based on the collation result A personal authentication method for a portable electronic device, comprising: Equipped with a camera in which iris data of the legitimate user's pupil is stored in advance, a mirror is provided at a predetermined external position of the device body, and a circular camera window is provided in the mirror A method for personal authentication of a portable electronic device,
A first step of projecting a user's eyes on the mirror;
A second step of matching the outer shape of the user's pupil to the display graphic displayed in the mirror so as to surround the camera window;
A third step of photographing the user's pupil through the camera window with the camera in a state in which the outer shape of the user's pupil is matched with the display figure;
Fourth step of comparing and collating the iris data obtained in the third step with the iris data of the legitimate user's pupil read from the storage unit and performing personal authentication based on the collation result A personal authentication method for a portable electronic device, comprising:

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