JP2005312749A - Imaging apparatus and authentication method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus improving reliability in an authentication. <P>SOLUTION: This imaging apparatus capturing an authentication object in an organism site is provided with an imaging means capturing the authentication object, and a display means provided to dispose the authentication object in the organism site in different positions to the imaging means respectively and displaying the respective positions as selecting indices. This arrangement can, despite an individual difference, constantly dispose the authentication object of the organism site in a same position and prevent a third party from grasping in which position the authentication object of the organism site is disposed, thus improving the reliability in the authentication. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an imaging apparatus and an authentication method, and is suitable for application to, for example, imaging a blood vessel of a human body.

  Conventionally, a finger or palm fingerprint on the surface of a human body is imaged, and a fingerprint formation pattern based on the obtained image is generally used as personal information. However, in recent years, blood vessels in the human body are imaged and obtained. A blood vessel formation pattern (hereinafter referred to as a blood vessel formation pattern) based on the obtained blood vessel image is also beginning to be used as personal information.

  In this case, for example, the authentication device 1 shown in FIG. 17 has been proposed, and in the imaging unit 10, light in the near infrared band (near infrared) is applied to deoxygenated hemoglobin (venous blood) or oxygenated hemoglobin (arterial blood) in the blood vessel. Taking advantage of the specific absorption of light), blood vessels in the human body are imaged.

  The imaging unit 10 includes a near-infrared light source 11 that emits near-infrared light. On the optical path of the near-infrared light emitted from the near-infrared light source 11, An optical filter 12 that transmits only light and a camera unit 13 are sequentially arranged, and guide grooves 14 are provided on both sides of the optical filter 12.

  The imaging unit 10 is provided with an imaging switch 15 in the guide direction of the guide groove 14. The position of the imaging switch 15 is the first of the fingers FG when the finger FG is arranged along the guide groove 14. And the part before and behind between 2nd joints is selected so that it may be located in the optical filter 12. FIG.

As a result, the imaging unit 10 is guided to the guide groove 14 to press the imaging switch 15 and selects the position and orientation of the portion corresponding to the fingertip of the finger FG almost naturally by placing the finger FG very naturally. The position of the finger FG to be imaged is arranged almost uniquely so that the blood vessel of the finger FG can be imaged (see, for example, Patent Document 1).
JP 2003-030632 A

  By the way, when such an imaging unit 10 is used, the position and orientation of the portion corresponding to the fingertip of the finger FG are uniquely selected by the guide groove 14 and the imaging switch 15, so the user selects the position of the finger FG. Since the finger FG is placed and imaged without any problem, if the blood vessel generation pattern is stolen, a third party can impersonate the user, and the reliability at the time of authentication is impaired.

  Moreover, in the imaging part 10, the length from the insertion port which inserts the finger FG to the imaging switch 15 is fixed, and the position is also fixed. However, there are individual differences in the length of the human finger FG, and depending on the length of the finger FG, there is a problem that it is difficult for all users to place and image the same part of the finger FG.

  The present invention has been made in consideration of the above points, and proposes an imaging apparatus and an authentication method that can improve reliability during authentication.

  In order to solve such a problem, in the present invention, in an imaging apparatus that images an authentication target in a living body part, an imaging unit that images the authentication object and an authentication target in the living body part are arranged at different positions with respect to the imaging unit. And a display means for displaying each position as a selection index.

  As a result, it is possible to always place the biometric part authentication target at the same position regardless of individual differences, and it is impossible for the third party to know where the biometric part authentication target is arranged. You can

  In order to solve such a problem, in the present invention, in the authentication method for authenticating the authentication target in the living body part, the authentication target in the living body part is provided so as to be arranged at different positions with respect to the imaging unit. The first step of imaging the authentication object selected by the display means for displaying as a selection index, and the second step of authenticating the authentication object position in the captured image obtained as a result of imaging and the authentication object as parameters And so on.

  Thereby, even when the authentication target in the living body part is stolen, the third party cannot know where the authentication target of the living body part has been placed, and thus spoofing can be prevented.

  As described above, according to the present invention, in the imaging apparatus that images the authentication target in the biological part, the imaging unit that images the authentication target and the authentication target in the biological part are arranged at different positions with respect to the imaging unit. Provided with a display means for displaying each position as a selection index, so that it is possible to always place an authentication target of a biological part at the same position regardless of individual differences, and to a third party. Therefore, it is impossible to know where the authentication target of the living body part is arranged, and thus an imaging apparatus that can improve the reliability at the time of authentication can be realized.

  As described above, according to the present invention, in the authentication method for authenticating the authentication target in the biological part, the authentication target in the biological part is provided so as to be arranged at different positions with respect to the imaging unit, and each position is selected. A first step of imaging the authentication target selected by the display means for displaying as an index, and a second step of authenticating the authentication target position in the captured image obtained as a result of the imaging and the authentication target as parameters. By providing it, even if the authentication target in the living body part is stolen, a third party cannot know where the authentication target of the living body part has been placed. Thus, an authentication method that can improve the reliability during authentication can be realized.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Configuration of Mobile Phone According to this Embodiment In FIG. 1, reference numeral 20 denotes a mobile phone according to this embodiment as a whole, and an upper housing 22 and a lower housing 23 are connected via a central hinge portion 21. The mobile phone 20 is formed to be foldable via the hinge portion 21.

A display unit 24 composed of a liquid crystal display is provided in the center of the front surface of the housing surface 22A of the upper housing 22, and information such as images corresponding to various functions of the mobile phone 20 is displayed via the display unit 24. It can be displayed. In addition, on the right side of the upper end of the housing rear surface 22B,
An antenna unit 25 is provided so as to be extendable and contracted, and radio waves can be transmitted to and received from a base station (not shown) via the antenna unit 25.

  Furthermore, a speaker 26 is provided on the upper side of the display unit 24 so that the voice of the communication destination user can be output via the speaker 26.

  On the other hand, an operation unit 27 including a plurality of operation buttons is provided in the center of the front surface of the housing surface 23A in the lower housing 23 so that various commands can be input.

  In addition, a microphone 29 is provided below the housing surface 23A so that the user's voice and the like during a call can be collected.

  In addition to such a configuration, the cellular phone 20 is provided with an imaging unit 30 for imaging a blood vessel between the operation unit 27 and the microphone 29 on the casing surface 23A of the lower casing 23, while the lower casing A positioning line 31 is provided in a rectangular lattice shape at the front center of the housing surface 23A.

  At this time, for example, as illustrated in FIG. 2A, the imaging unit 30 aligns the top part of the fingertip of the finger FG in the positioning line 31 with the first line from the top of the horizontal line, as illustrated in FIG. At the same time, when the finger FG is arranged with the left side surface portion of the finger FG aligned with the second line from the left of the vertical line, the imaging target (hereinafter referred to as specific imaging) arranged in the imaging unit 30 at that time The blood vessel is called an object.

Similarly, as shown in FIG. 2B, for example, the imaging unit 30 moves the finger FG of the human body to the third line from the top of the horizontal line of the positioning line 31. Align the left side of the finger FG with the second line from the left of the vertical line.
When the is placed, the specific imaging target corresponding to the position is imaged. Further, similarly, as shown in FIG. 2C, for example, the imaging unit 30 turns the human finger FG from the positioning line 31 to the top line of the fingertip of the finger FG as the first line from the top of the horizontal line. Together with finger FG
When the finger FG is placed so that the left side portion of is aligned with the first line from the left of the vertical line,
The blood vessel of the specific imaging target corresponding to the position is imaged.

  That is, in the cellular phone 20, the user can image the blood vessel of the specific imaging target corresponding to the position by placing the finger FG on the positioning line 31 at an arbitrary position.

  Further, in the mobile phone 20, the position of the finger FG placed by the user can be easily recognized visually by the positioning line 31, and then the finger FG is again placed at the position placed by the user based on the positioning line 31. By arranging, it is possible to image a blood vessel of a specific imaging target that is always arranged at the same position.

(2) Specific Processing of Imaging Unit Next, specific processing of the imaging unit 30 in the case where the user places the finger FG in accordance with an arbitrarily designated position in the positioning line 31 will be described. .

  In the imaging unit 30, as shown in FIG. 3, an imaging opening 32 is provided at a predetermined position, while the near-infrared light source 33 (33A and 33A) is sandwiched from both sides with respect to the arrangement position of the imaging opening 32. 33B) is arranged, and irradiates near infrared light toward the finger FG arranged in the imaging opening 32.

  This near-infrared light is specifically absorbed by the existing hemoglobin in the blood vessel tissue (not shown) inside the finger FG, and is transmitted or reflected by other tissues.

  Therefore, near-infrared light obtained via the finger FG is imaged in the lower housing 23 via the optical filter 34 fitted in the imaging opening 32 as blood vessel pattern light representing the formation pattern of the blood vessel tissue. The light is guided to the camera unit 35 below the opening 32.

  The camera unit 35 includes an ultraviolet light cut filter 35A, a lens 35B, and a solid-state imaging device 35C that are sequentially arranged on the optical path. The blood vessel pattern light guided through the imaging opening 32 and the finger FG at this time A solid-state image pickup device that sequentially obtains external light (hereinafter referred to as normal light) that is normally obtained in an atmosphere guided through the imaging opening 32 through a gap between the solid-state imaging device and the ultraviolet light cut filter 35A and the lens 35B. Incident on 35C.

  The solid-state imaging device 35C has a plurality of photoelectric conversion elements arranged in a lattice pattern, and the blood vessel pattern light is photoelectrically converted in these photoelectric conversion elements, and a charge signal is accumulated as a photoelectric conversion result of the incident blood vessel pattern light. The

  In this manner, the cellular phone 20 can image a blood vessel of a specific imaging target inside the finger FG of the human body.

(3) Internal Configuration of Cellular Phone According to this Embodiment In this cellular phone 20, as shown in FIG. 4, a communication processing unit 37, an imaging processing unit 38, and a memory are stored in the control unit 36 that controls the whole. The unit 39, the display unit 24, and the operation unit 27 are connected. The storage unit 39 stores programs corresponding to various instructions.

  The control unit 36 appropriately reads out the program stored in the storage unit 39 via the operation unit 27, performs various processes according to the program developed in the internal work memory (not shown), and the processing result as necessary. Is displayed on the display unit 24.

  Actually, when a call command is given from the operation unit 27 or an incoming command is given from the communication processing unit 37, the control unit 36 controls the communication processing unit 37 to perform the process at the time of calling and Call processing is executed based on the operation.

  In addition to such a configuration, the control unit 36 controls the imaging processing unit 38 in accordance with a command given from the operation unit 27 to register a blood vessel formation pattern and a blood vessel formation pattern for authenticating the blood vessel formation pattern. A pattern authentication mode, and one of the modes is executed in response to a command from the operation unit 27.

  The communication processing unit 37 is configured by connecting a transmission / reception unit 41, a speaker 26, and a microphone 29 to the signal processing unit 40. An antenna unit 25 is connected to the transmission / reception unit 41, and various signals are transmitted / received via the antenna unit 25.

  Then, the communication processing unit 37 converts the user's voice input via the microphone 29 into the utterance signal S1 in the signal processing unit 40, modulates the utterance signal S1 in the transmission / reception unit 41, and amplifies the utterance signal S1. The other party's voice signal received from the base station (not shown) to the transmitting / receiving unit 41 via the antenna unit 25 is transmitted to the received signal S2 in the signal processing unit 40. By converting and outputting the received voice based on the received signal S2 from the speaker 26, a call can be made.

  The imaging processing unit 38 is configured by connecting the near-infrared light source 33 and the camera unit 35 to the imaging control unit 42. The camera unit 35 is configured by being connected to an image processing unit 43.

  The imaging control unit 42 controls the output of the near-infrared light source 33 so as to have a value set in advance as the intensity greater than the intensity of the normal light, and near-infrared light having an intensity greater than the normal light is reduced. Irradiate from the infrared light source 33.

  In this case, the normal light is not only attenuated by being blocked by bones and the like as shown in FIG. 3, but also becomes substantially negligible light by near-infrared light having a higher intensity.

  In addition, the imaging control unit 42 limits the amount of charge signal stored in the solid-state imaging device 35C (FIG. 4) of the camera unit 35 according to exposure time control called an electronic shutter, so that blood vessels in the camera unit 35 are obtained. Adjust imaging sensitivity to pattern light.

  Specifically, as shown in FIG. 5, the imaging control unit 42 determines the amount of charge stored in each photoelectric conversion element of the camera unit 35 from the falling edge of the reading clock to the next reading timing (hereinafter referred to as this). The charge amount is limited by resetting at a predetermined timing within t1.

  As a result, in each photoelectric conversion element of the camera unit 35, as shown in FIG. 6A, the intensity of near infrared light emitted from the near infrared light source 33 is higher than that of normal light. In addition to avoiding a situation in which the charge accumulated in each photoelectric conversion element is saturated during the charge accumulation period t1 (FIG. 5), as shown in FIG. Since the amount of charge stored in each photoelectric conversion element as a result of photoelectric conversion with respect to light is relatively reduced, the imaging sensitivity with respect to blood vessel pattern light in the camera unit 35 is not substantially affected by normal light.

  Therefore, the camera unit 35 detects that the charge limited by the exposure time control of the imaging control unit 42 is inward of the finger FG when the readout timing of the readout clock supplied from a clock generator (not shown) is read. Is output to the image processing unit 43 as a blood vessel image signal S3 with the imaging opening 32 reflecting the blood vessel faithfully as an imaging frame.

  The image processing unit 43 performs, for example, analog / digital conversion and binarization processing on the supplied blood vessel image signal S3, and performs various extraction processing thereafter as necessary. The blood vessel formation pattern is extracted, and the extracted blood vessel formation pattern (hereinafter referred to as an extracted blood vessel formation pattern) S4 is sent to the control unit 36.

  For example, as illustrated in FIG. 7A, the image processing unit 43, as illustrated in FIG. 7D, performs imaging when the finger FG is placed at the same position as in FIG. 2A. An extracted blood vessel formation pattern S4 based on the blood vessel image signal S3 is extracted.

(4) Angiogenesis Pattern Registration and Authentication Mode Next, processing contents of the control unit 36 that executes the angiogenesis pattern registration and authentication mode will be described in detail.

(4-1) Angiogenesis pattern registration mode When registering the extracted blood vessel formation pattern S4 to be supplied, the control unit 36 sends the extracted blood vessel formation pattern S4 to the storage unit 39, and the storage unit 39 By storing the extracted blood vessel formation pattern S4, it is stored in the storage unit 39 as a registered blood vessel formation pattern S5.

  For example, as shown in FIG. 7A, the control unit 36, when the finger FG is placed at the same position as in FIG. 2A and performs imaging, extracts blood vessels as shown in FIG. 7D. The formation pattern S4 is registered as a registered blood vessel formation pattern S5.

(4-2) Angiogenesis pattern authentication mode When authenticating the supplied extracted angiogenesis pattern S4, the control unit 36 reads out the registered angiogenesis pattern S5 from the storage unit 39 to the control unit 36, and registers angiogenesis. A matching process is performed between the pattern S5 and the supplied extracted blood vessel formation pattern S4.

  At this time, the control unit 36 collates whether the blood vessel formation pattern of the registered blood vessel formation pattern S5 and the extraction blood vessel formation pattern S4 coincides with each other, and also applies to the imaging frames of the registration blood vessel formation pattern S5 and the extraction blood vessel formation pattern S4 Whether the position of the blood vessel formation pattern (hereinafter referred to as the blood vessel formation pattern position) matches is collated.

  The control unit 36 can authenticate only when the registered blood vessel formation pattern S5 matches the blood vessel formation pattern and the blood vessel formation pattern position matches.

  That is, if the registered blood vessel formation pattern S5 is FIG. 7D, the control unit 36 performs imaging by placing the finger FG at the same position as in FIG. 2B as shown in FIG. 7B. In such a case, the registered blood vessel formation pattern S5 shown in FIG. 7D is compared with the extracted blood vessel formation pattern S4 shown in FIG.

  In this case, since the blood vessel formation pattern of the registered blood vessel formation pattern S5 shown in FIG. 7D and the extraction blood vessel formation pattern S4 shown in FIG. Has been made.

  Similarly, as shown in FIG. 7C, the control unit 36 arranges the blood vessels shown in FIG. 7D when imaging is performed with the finger FG placed at the same position as in FIG. 2C. Collation processing is performed between the formation pattern S5 and the extracted blood vessel formation pattern S4 shown in FIG.

  In this case, the control unit 36 differs in the blood vessel formation pattern position between the registered blood vessel formation pattern S5 shown in FIG. 7D and the extraction blood vessel formation pattern S4 shown in FIG. Although the registered blood vessel formation pattern S5 shown in FIG. 7 and the extracted blood vessel formation pattern S4 shown in FIG. 7E match, the authentication is rejected.

  Further, similarly, as shown in FIG. 7A, the control unit 36 arranges the registered blood vessels shown in FIG. 7D when imaging is performed with the finger FG placed at the same position as that in FIG. A matching process is performed between the formation pattern S5 and the extracted blood vessel formation pattern S4 shown in FIG.

  In this case, the control unit 36 matches the blood vessel formation pattern S5 shown in FIG. 7D with the blood vessel formation pattern S4 shown in FIG. 7D, and the blood vessel formation pattern position also matches. So it has been made to authenticate.

  When the registered blood vessel formation pattern S5 and the extracted blood vessel formation pattern S4 are authenticated, the control unit 36 generates an authentication signal S6 and sends it to the storage unit 39, so that the individual in the storage unit 39 While the information can be handled, when the authentication of the registered blood vessel formation pattern S5 and the extracted blood vessel formation pattern S4 is rejected, an authentication rejection signal S7 is generated and sent to the storage unit 39 to thereby store the information. The personal information in the unit 39 is not handled.

  In this way, the mobile phone 20 can authenticate only when the user's finger FG is subsequently placed at the position placed by the user at the time of registration.

  As a result, the mobile phone 20 can prevent direct theft from a living body by authenticating using a blood vessel formation pattern unique to the living body as compared with a fingerprint or the like on the surface of the living body. Not only the registered blood vessel formation pattern S5 is authenticated based on the positioning line 31 but only when the user places the finger FG at the position where the user placed the finger FG at the time of registration. Even when the angiogenesis pattern is indirectly stolen, such as when the registration data is stolen, the placement position is information that only the user can know, preventing third parties from impersonating the registrant. It is made to be able to do.

(5) Blood vessel formation pattern registration and authentication mode control procedure Here, the blood vessel formation pattern registration and authentication mode control procedure by the control unit 36 as described above is based on the control program stored in the storage unit 39, as shown in FIG. The angiogenesis pattern registration and authentication mode control procedure RT shown in FIG.

  That is, when the blood vessel can be imaged, the control unit 36 starts the blood vessel formation pattern registration and authentication mode control procedure RT in step SP0, and in the subsequent step SP1, accesses the operation unit 27 to perform blood vessel imaging. It is determined whether an instruction has been issued (for example, a registration button or an authentication button (not shown) has been pressed). Then, the control unit 36 determines that the finger FG is placed on the positioning line 31 only when the blood vessel imaging command is issued while waiting for the blood vessel imaging command to be issued in step SP1, and proceeds to step SP2. Then, the imaging control unit 42 is accessed to execute blood vessel imaging processing.

  The control unit 36 then proceeds to step SP3 and determines whether or not to register the extracted blood vessel formation pattern S4 based on the blood vessel image signal S3. If the control unit 36 obtains a negative result in step SP3, the control unit 36 determines that the registered blood vessel formation pattern S5 has been registered or that the authentication button has been pressed, and proceeds to step SP5. If it is obtained, it is determined that the registered blood vessel formation pattern S5 is not registered or the registration button is pressed, and the process proceeds to step SP4 to register the extracted blood vessel formation pattern S4 in the storage unit 39 as the registered blood vessel formation pattern S5.

  Further, the control unit 36 then proceeds to step SP5, collates the extracted blood vessel formation pattern S4 with the registered blood vessel formation pattern S5, and determines whether or not the blood vessel formation pattern and the blood vessel formation pattern position match. If the control unit 36 obtains a negative result in step SP5, it proceeds to step SP7. If it obtains a positive result, it proceeds to step SP6 and authenticates the extracted blood vessel formation pattern S4 and the registered blood vessel formation pattern S5. .

  Then, the control unit 36 proceeds to step SP7, and determines whether or not the authentication of the extracted blood vessel formation pattern S4 and the registered blood vessel formation pattern S5 has failed three times or more. If the control unit 36 obtains a negative result in step SP7, it proceeds to step SP9. If it obtains a positive result, it proceeds to step SP8 and authenticates the extracted blood vessel formation pattern S4 and the registered blood vessel formation pattern S5. I refuse.

  Further, the control unit 36 proceeds to step SP9, displays a warning message on the display unit 24, for example, returns to step SP1, and thereafter repeats the same processing for steps SP1 to SP9. The control unit 36 then proceeds to step SP10 and ends the registration of the blood vessel formation pattern and the authentication mode control procedure RT.

  In this way, the control unit 36 can control the imaging control unit 38 and the storage unit 39 to register and authenticate the extracted blood vessel formation pattern S4.

(6) Operation and effect according to the present embodiment In the above configuration, the cellular phone 20 allows the user to select a position for placing the finger FG from the positioning line 31.

  Therefore, in this cellular phone 20, the authentication part of the finger FG can be always placed at the same position regardless of individual differences for the user, and the position of the finger FG to the third party by the user. It is possible to prevent the user from knowing whether the authentication site has been placed.

  In the above configuration, the cellular phone 20 performs authentication only when the blood vessel formation pattern parameters and the blood vessel formation pattern position parameters based on the position where the user places the finger FG coincide with those at the time of registration.

  Therefore, in this cellular phone 20, even when the blood vessel formation pattern is stolen, the arrangement position can be prevented from being impersonated by the third party because it is information that only the user can know. .

  According to the above configuration, by allowing the user to select the position where the finger FG is placed from the positioning line 31, the user can always place the authentication part of the finger FG at the same position regardless of individual differences. A mobile phone that can be placed and can prevent a third party from knowing where the user has placed the authentication part of the finger FG, thus improving the reliability of authentication. Can be realized.

  Further, according to the above configuration, the blood vessel formation pattern is authenticated only when the blood vessel formation pattern parameter and the position parameter of the blood vessel formation pattern based on the position where the user places the finger FG coincide with those at the time of registration. Even if a user is stolen, the location is only known to the user, so it is possible to prevent a third party from impersonating the user, thus improving the reliability of authentication. A telephone can be realized.

(7) Other Embodiments In the above-described embodiment, the case where the cellular phone 20 formed so as to be foldable is applied as the imaging device is described. However, the present invention is not limited to this, and for example, folding is possible. The present invention can be applied to mobile phones of various shapes other than the mold, and also includes information processing terminal devices such as PDAs (Personal Digital Assistants) and personal computers, home electronic devices, and various other types having communication functions. It can be applied to a communication terminal device.

  In the above-described embodiment, the case where the present invention is applied to the human finger FG has been described. However, the present invention is not limited to this and is applied to various other parts such as the retina of the living body and the whole body of the living body. Can be applied.

  Furthermore, in the above-described embodiment, the authentication target in the living body part is provided so as to be arranged at different positions with respect to the imaging unit, and the display unit for displaying each position as a selection index is a housing in the lower casing 23. Although the case where the user provided the positioning line 31 on the front center of the body surface 23A in a rectangular lattice shape for placing the finger FG by visual observation has been described, the present invention is not limited to this, and various other various display means are provided. It may be used.

  For example, as shown in FIG. 9, the imaging device 50 is provided with a single positioning line 51 that is shaped like a finger, and the user arranges the finger FG in accordance with the positioning line 51 to correspond to the position. A blood vessel of a specific imaging target can be imaged.

  Further, for example, as shown in FIG. 10, the imaging device 60 is provided with a positioning line 61 including a line shaped like a finger and a plurality of linear lines arranged in parallel to the inside of the line. When the user arranges the finger FG at an arbitrary position in the line 61, the blood vessel of the specific imaging target corresponding to the position can be imaged.

  Furthermore, for example, as shown in FIG. 11, the imaging device 70 is a positioning composed of a line shaped like a finger and a plurality of finger shaped lines arranged on the inner side of the line based on the length and thickness of the finger. A line 71 is provided, and when the user places the finger FG at an arbitrary position in the positioning line 71, the blood vessel of the specific imaging target corresponding to the position can be imaged.

  Further, as shown in FIG. 12, the imaging device 80 is provided with a positioning line 81 including a line shaped like a finger and a plurality of predetermined positioning displays inside the line. When the user arranges the finger FG in accordance with the position, the blood vessel of the specific imaging target corresponding to the position can be imaged.

  Further, for example, as shown in FIG. 13, the imaging device 90 is provided with a stopper 91 having a predetermined shape configured to be slidable in a predetermined position upward or in the opposite direction, and a plurality of positions for positioning the stopper 91. A positioning line 92 including a line and a plurality of linear lines arranged perpendicular to the stopper 91 is provided, and the stopper 91 fixed at a predetermined position and an arbitrary position of the positioning line 92 are provided. In addition, when the user arranges the finger FG, the blood vessel of the specific imaging target corresponding to the position can be imaged.

  Further, for example, as illustrated in FIG. 14, the imaging apparatus 100 is provided with a fingerprint authentication device 101 having a predetermined shape at a predetermined position where a fingertip is arranged, and the user arranges the finger FG according to the fingerprint authentication device 101. The fingerprint authentication device 101 can image a fingerprint placed at an arbitrary position, and can also image a specific imaging target blood vessel corresponding to the position.

  Furthermore, in the above-described embodiment, the authentication target in the living body part is provided so as to be arranged at different positions with respect to the imaging unit, and the display unit for displaying each position as a selection index is a housing in the lower casing 23. A positioning line 31 is provided in the center of the front surface of the body surface 23A in the form of a rectangular lattice. On the other hand, a blood vessel is provided between the operation unit 27 and the microphone 29 on the housing surface 23A of the lower housing 23 as an imaging means for imaging an authentication target. Although the case where the imaging unit 30 for imaging is provided has been described, the present invention is not limited thereto, and display means and imaging means may be provided at various other positions.

  For example, in FIG. 15, in which parts corresponding to those in FIG. 1 are assigned the same reference numerals, 110 denotes a mobile phone according to another embodiment as a whole, and the display unit 24 and speaker of the housing surface 22A in the upper housing 22 26, the imaging unit 111 is provided, and is configured in a similar manner except that the positioning line 112 is displayed on the display unit 24, and the user places the finger FG at an arbitrary position on the positioning line 112. Thus, it is possible to image the blood vessel of the specific imaging target corresponding to the position. In this case, the display unit 24 may display various other display means.

  Further, for example, in FIG. 16 in which the same reference numerals are assigned to the corresponding parts as in FIG. 1, reference numeral 120 denotes a mobile phone according to another embodiment as a whole. And the positioning line 122 is provided in the same manner, and the user arranges the finger FG at an arbitrary position in the positioning line 122, thereby imaging a blood vessel of a specific imaging target corresponding to the position. can do. In this case, the hinge part 123 is provided with a lock function, and the lock of the hinge part 123 may be released by authentication.

  Furthermore, in the above-described embodiment, the case where the authentication is rejected when the authentication fails three times or more has been described. However, the present invention is not limited to this, and the authentication is rejected at various other predetermined times. Also good.

  Furthermore, in the above-described embodiment, the case of resetting at a predetermined reset timing within the charge accumulation period t1 (FIG. 5) has been described. However, the present invention is not limited to this, and the amount of light adjustment in the camera unit 35 is adjusted. Accordingly, the reset timing within the charge accumulation period t1 (FIG. 5) may be changed, and these may be combined. In this way, the imaging sensitivity with respect to the blood vessel pattern light in the camera unit 35 can be adjusted more adaptively, so that it can be generated as a blood vessel image signal S3 that faithfully reproduces the blood vessel inside the finger FG. .

  INDUSTRIAL APPLICABILITY The present invention can be used in various communication terminal devices other than mobile phones when ensuring confidentiality of various data from a third party.

It is a basic diagram which shows the structure of the mobile telephone by this Embodiment. It is a basic diagram which shows the mode of the mobile telephone at the time of arrange | positioning a finger | toe. It is a basic diagram which shows the specific process of an imaging part. It is a block diagram which shows the internal structure of the mobile telephone by this Embodiment. It is a basic diagram with which it uses for description of an electronic shutter. It is a basic diagram with which it uses for description of adjustment of the imaging sensitivity by an electronic shutter. It is a basic diagram with which it uses for description of the relationship between the arrangement position of a finger | toe, and an angiogenesis pattern. It is a flowchart which shows the registration of blood vessel formation pattern, and an authentication mode control procedure. It is a basic diagram which shows the structure (1) of the imaging device by other embodiment. It is a basic diagram which shows the structure (2) of the imaging device by other embodiment. It is a basic diagram which shows the structure (3) of the imaging device by other embodiment. It is a basic diagram which shows the structure (4) of the imaging device by other embodiment. It is a basic diagram which shows the structure (5) of the imaging device by other embodiment. It is a basic diagram which shows the structure (6) of the imaging device by other embodiment. It is a basic diagram which shows the structure (1) of the mobile telephone by other embodiment. It is a basic diagram which shows the structure (2) of the mobile telephone by other embodiment. It is a basic diagram which shows the structure of the imaging device by the past.

Explanation of symbols

  20, 110, 120... Mobile phone, 27 .. operation unit, 30, 111, 121... Imaging unit, 31, 51, 61, 71, 81, 92 .. positioning line, 32. …… Near-infrared light source, 34 …… Optical filter, 35 …… Camera unit, 35A …… UV cut filter, 35B …… Lens, 35C …… Solid-state imaging device, 36 …… Control unit, 37 …… Communication processing , 38... Imaging processing unit, 39... Storage unit, 40... Signal processing unit, 41 .. transmission / reception unit, 42... Imaging control unit, 43. 90, 100: Imaging device.

Claims (3)

In an imaging device that images an authentication target in a living body part,
Imaging means for imaging the authentication object;
An imaging apparatus comprising: a display unit that is provided so that authentication targets in the living body part are arranged at different positions with respect to the imaging unit, and displays each of the positions as a selection index. An authentication unit for authenticating the authentication target position in the captured image obtained from the imaging unit as the imaging result of the authentication target selected by the display unit and the authentication target as parameters; The imaging device according to claim 1. In an authentication method for authenticating an authentication target in a living body part,
A first step of imaging the authentication object selected by a display means provided so that authentication objects in the living body part are arranged at different positions with respect to the imaging means, and displaying each position as a selection index; ,
An authentication method comprising: a second step of authenticating a position of the authentication target in a captured image obtained as a result of imaging and using the authentication target as a parameter.

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