JP4432539B2 - Ring reader - Google Patents

Description

  The present invention relates to a ring-type reading device for reading a fingerprint, for example, by fitting it on a finger in order to perform personal authentication using biometric information.

  2. Description of the Related Art Conventionally, fingerprint readers that read fingerprints have been put into practical use in order to perform personal authentication using biometric information.

  In this fingerprint reader, there are various types of readers such as optical type, capacitance type, thermal type, pressure type, etc. Recently, a scanning type reading device using a small one-dimensional image sensor has also been developed, It is installed as an authentication device in portable devices such as mobile phones.

  In the conventional fingerprint reading device, a fingerprint reading window, that is, a sensor part is arranged on an unlocking operation panel for entering a specific facility or an operation terminal of an information device, and the authentication target person's finger is placed at a predetermined position of the sensor part. The one that reads the fingerprint of the finger by placing or moving and scanning the image has become the mainstream.

  On the other hand, instead of going to place the finger on the reading window in the fingerprint reader, the person to be authenticated always puts the sensor part of the reader on the finger of the person to be authenticated to read the fingerprint. A small ring-type fingerprint reading device that can be carried is considered (for example, see Patent Document 1).

This conventional ring-type fingerprint reader uses a slit formed in the circumferential direction along the inner peripheral surface of a ring (ring) that fits on a finger as a reading window, and a part of the fingerprint on the outer periphery of the finger is formed into a line To read.
JP 2003-093368

  The conventional ring-type fingerprint reader has a structure that reads a fingerprint in a line shape using a slit formed in the circumferential direction on the inner peripheral surface of an annular body that fits on a finger as a reading window. There is a problem that a fingerprint image with a large amount of information cannot be acquired.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a ring-type reading device that can easily acquire a finger image having a sufficient amount of information by making use of an annular structure. To do.

  A ring-type reading device according to claim 1 of the present invention is a ring-shaped transparent inner ring that directly contacts the outer surface of a finger, and is opposed to the inner ring so as to overlap the outer periphery of the inner ring. An outer ring that can be rotated and slidable, a ring head portion protruding outward from a portion of the outer ring, a ring head portion disposed inside the ring head portion, and a finger surface passing through the inner ring. An illumination light source that illuminates; and an image sensor that is disposed inside the ring head unit and that captures a fingerprint image of the surface of the finger illuminated by the illumination light source; Fingerprint image data captured corresponding to the scanning range of the element is acquired.

  According to this, it is possible to acquire fingerprint image data having an information amount corresponding to the scanning range of the image sensor associated with the rotational sliding of the outer peripheral ring only by rotating and sliding the outer peripheral ring while being attached to the finger.

  A ring-type reading device according to claim 2 of the present invention is a ring-type transparent hollow inner ring that comes into direct contact with the outer circumferential surface of a finger, and is disposed inside the hollow of the inner ring. An illumination light source that illuminates the surface of the finger by propagating scattered light in the peripheral ring, an outer peripheral ring that overlaps the outer periphery of the inner peripheral ring and that can rotate and slide relative to the inner peripheral ring, A ring head portion projecting outward in a part, and an image pickup device that is disposed inside the ring head portion and captures a fingerprint image of the surface of the finger illuminated by the illumination light source, Fingerprint image data imaged corresponding to the scanning range of the image sensor is acquired as the outer peripheral ring rotates and slides.

  According to this, it is possible to acquire fingerprint image data having an information amount corresponding to the scanning range of the image sensor associated with the rotational sliding of the outer peripheral ring only by rotating and sliding the outer peripheral ring while being attached to the finger.

  A ring-type reading device according to claim 3 of the present invention is a ring-shaped transparent inner ring that comes into direct contact with the outer peripheral surface of a finger, and is disposed inside the inner ring. An illumination light source that transmits and illuminates the inside of a finger that contacts the inner peripheral surface, an outer peripheral ring that overlaps the outer periphery of the inner peripheral ring and that can rotate and slide relative to the inner peripheral ring, and a portion of the outer peripheral ring A ring head portion projecting outward, and an imaging device that is disposed inside the ring head portion and images a vein pattern image inside the finger that is transmitted and illuminated by the illumination light source. In addition, venous blood vessel pattern image data inside the finger imaged corresponding to the scanning range of the imaging device is acquired as the outer peripheral ring rotates and slides.

  According to this, the venous blood vessel pattern image data inside the finger having an information amount corresponding to the scanning range of the image sensor associated with the rotational sliding of the outer peripheral ring can be obtained simply by rotating and sliding the outer peripheral ring while being attached to the finger. You can get it.

  A ring-type reading device according to claim 4 of the present invention is a ring-type transparent hollow inner ring that directly contacts the outer peripheral surface of a finger, and is disposed inside the hollow of the inner peripheral ring. A light source for illuminating the finger by diffusing scattered light in the peripheral ring to illuminate the surface of the finger, and a light source disposed inside the inner peripheral ring and transmitting through the inside of the finger in contact with the inner peripheral surface of the inner peripheral ring A light source for finger internal illumination that illuminates, an outer ring that overlaps the outer periphery of the inner ring and that can rotate and slide relative to the inner ring, and protrudes outward from a part of the outer ring. A ring head part and a fingerprint image of a finger surface disposed inside the ring head part and illuminated by the light source for fingerprint illumination or a vein inside the finger transmitted and illuminated by the light source for finger internal illumination An image sensor that switches and images blood vessel pattern images , Characterized in that said peripheral ring with the rotation sliding in response to the scanning range of the image pickup element or the fingerprint image data captured in, and acquires the internal vein blood vessel pattern image data of the finger.

  According to this, only by rotating and sliding the outer ring while wearing on the finger, the fingerprint image data of the amount of information corresponding to the scanning range of the image sensor accompanying the rotation and sliding of the outer ring or the veins inside the finger The blood vessel pattern image data can be acquired by switching.

  The ring-type reading device according to claim 5 of the present invention is a ring-shaped transparent inner ring that directly contacts the outer surface of the finger, and is opposed to the inner ring so as to overlap the outer periphery of the inner ring. An outer ring which can rotate and slide, a ring head part protruding outward from a part of the outer ring, and the outer ring which is opposed to the ring head part of the outer ring. A light source for illumination inside the finger that illuminates the inside of the finger that is in contact with the inner circumferential surface of the inner ring through the inner ring, and is disposed inside the ring head portion, Fingerprint illumination light source for illuminating the surface, and a finger image disposed inside the ring head unit and illuminated by the fingerprint illumination light source or transmitted through the finger internal illumination light source The internal venous blood vessels An image sensor that switches and captures image images, and fingerprint image data imaged corresponding to the scanning range of the image sensor as the outer peripheral ring rotates or venous blood vessel pattern image data inside the finger It is characterized by acquiring.

  According to this, only by rotating and sliding the outer ring while wearing on the finger, the fingerprint image data of the amount of information corresponding to the scanning range of the image sensor accompanying the rotation and sliding of the outer ring or the veins inside the finger The blood vessel pattern image data can be acquired by switching.

  A ring-type reading device according to a sixth aspect of the present invention is the ring-type reading device according to any one of the first to fifth aspects, wherein the imaging is performed as the outer peripheral ring rotates and slides. Image data acquired corresponding to the scanning range of the element is wirelessly transmitted to an external information processing system.

  According to this, the fingerprint image data and venous blood vessel pattern image data acquired with the amount of scanning information of the image sensor accompanying the rotational sliding of the outer ring is wirelessly transmitted to an external information processing system, so that It is possible to have an external system perform personal authentication processing based on ecological information.

  According to the ring-type reading device according to claim 1 or 2 of the present invention, in any case, only by rotating and sliding the outer ring while being attached to the finger, imaging associated with the rotation and sliding of the outer ring. Fingerprint image data having an information amount corresponding to the scanning range of the element can be acquired.

  According to the ring-type reading device according to claim 3 of the present invention, the amount of information corresponding to the scanning range of the image sensor associated with the rotational sliding of the outer peripheral ring can be obtained only by rotating the outer peripheral ring while being attached to the finger. The venous blood vessel pattern image data inside the finger can be acquired.

  According to the ring-type reading device according to claim 4 or 5 of the present invention, in any case, only by rotating and sliding the outer ring while being attached to the finger, imaging associated with the rotation and sliding of the outer ring. Fingerprint image data having an information amount corresponding to the scanning range of the element or venous blood vessel pattern image data inside the finger can be switched and acquired.

  According to a ring-type reading device according to claim 6 of the present invention, there is provided the ring-type reading device according to any one of claims 1 to 5, and further imaging associated with rotational sliding of the outer ring. Fingerprint image data and venous blood vessel pattern image data acquired with the scanning information amount of the element is wirelessly transmitted to an external information processing system, so that personal authentication processing based on appropriate ecological information can be performed with an external system very easily. Can be done.

  Therefore, according to the present invention, it is possible to provide a ring-type reading device that makes it possible to easily acquire a finger image having a sufficient amount of information by utilizing the annular structure.

  Embodiments of the ring-type reading device of the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a plan view showing a configuration of a reflected light ring fingerprint reading apparatus 10 according to the first embodiment of the present invention.

  This reflected light type ring-type fingerprint reader 10 is configured in an annular shape so as to be fitted and worn on the finger F of the hand like a ring, and an inner peripheral ring that directly contacts the outer surface (fingerprint G) of the finger F. 11 and an outer peripheral ring 12 that overlaps with the entire outer peripheral surface of the inner peripheral ring 11 and is slidable in a certain range a to b in the circumferential direction.

  For the inner ring 11, a transparent plastic or glass ring that transmits light is used. Further, the outer ring 12 is provided with a ring head portion 13 protruding in a part thereof.

  The ring head unit 13 includes a light source 14 for illuminating the surface of the finger F (fingerprint G) through the inner ring 11, an illumination optical system 15, and an optical fingerprint on the surface of the illuminated finger F. An imaging optical system 16 for imaging the image Gx through the inner ring 11, an imaging element 17, and a circuit board 18 are incorporated.

  As the illumination light source 15, a visible light or infrared light LED, a semiconductor laser, or the like is used. As the illumination optical system 15 and the imaging optical system 16, a Selfox lens or the like is used.

  The image sensor 17 is a one-line image sensor in which CCDs are arranged in a predetermined length in the width direction of the inner and outer rings 11, 12, that is, in the length direction of the finger F.

  Although not shown, the outer ring 12 has a communication unit and an antenna for transmitting fingerprint image information processed by an electronic circuit (described later) on the circuit board 18 as a wireless signal, and a power supply. Built-in battery etc.

  FIG. 2 is a diagram showing a usage state in which the ring-type fingerprint reading device 10 is worn on the finger F of the hand H and fingerprint image data Gpic read in the length of the ranges a to b.

  That is, the ring-type fingerprint reader 10 is mounted on the finger F of the hand H as shown in FIGS. 1 and 2, and the ring head portion 13 of the outer ring 12 is slid over the range a to b of the inner ring 11. When the optical fingerprint image Gx is read while moving, the image sensor 17 obtains fingerprint image data Gpic having a width and a length corresponding to the scanning ranges a to b of the imaging optical system 16 as shown in FIG. Captured and captured.

  FIG. 3 is a plan view showing the configuration of the scattered light type ring-type fingerprint reading apparatus 10 ′ according to the first embodiment of the present invention. FIG. 3 (A) is an overall plan view thereof, and FIG. It is the elements on larger scale of the illumination optical system.

  In this scattered light type ring fingerprint reader 10 ′, the same components as those in the reflected light type ring fingerprint reader 10 shown in FIG. .

  In this scattered light type ring-type fingerprint reader 10 ', a plastic or glass hollow ring that guides light by scattering light in the annular direction is used as the inner ring 11a. An illumination light source 14a using a visible light or infrared light LED, a semiconductor laser, or the like is arranged in the peripheral ring 11a.

  That is, in this scattered light type ring-type fingerprint reader 10 ′, the light emitted by the illumination light source 14a in the inner ring 11a propagates in a ring as scattered light x in the inner ring 11a, and the finger F The surface is illuminated on average, and the ring head portion 13 of the outer ring 12 rotates and slides over the range a to b of the inner ring 11a in the same manner as the reflected light type ring fingerprint reader 10 in FIG. While reading the optical fingerprint image Gx, as shown in FIG. 3, the image sensor 17 prints the fingerprint image data Gpic having a width and length corresponding to the scanning ranges a to b of the image pickup optical system 16. Is captured and captured.

  In either case of the reflected light type ring fingerprint reading device 10 shown in FIG. 1 or the scattered light type ring fingerprint reading device 10 ′ shown in FIG. An encoder function for detecting the rotational sliding distance of the outer peripheral ring 12 with respect to (11a) is provided at regular intervals, and the capturing timing of the optical fingerprint image Gx by the image sensor 16 is synchronized with the rotational distance detection at regular intervals. By controlling, higher-definition and accurate fingerprint image data Gpic can be obtained.

  FIG. 4 is a block diagram showing the configuration of the electronic circuit of the external information processing system 30 based on the ring fingerprint reader 10 (10 ′) and the read information.

  The electronic circuit of the reflected light type ring fingerprint reader 10 in FIG. 1 and the scattered light type ring fingerprint reader 10 ′ in FIG. A circuit board 18 in the ring head unit 13 is provided with a fingerprint image signal processing unit 21, a fingerprint data memory 22, an encryption / signature processing unit 23, an authentication control unit 24, and an input / output control unit 25. Is supplied.

  An antenna 29 is connected to the input / output control unit 25 from the communication control unit 27 via the wireless transmission / reception unit 28.

  On the other hand, the external information processing system 30 includes an antenna 31, a wireless transmission / reception unit 32, a communication control unit 33, a system control unit 34, and a security / service control unit 35. The system control unit 34 includes a program memory 36, data A memory 37 and an input / output device 38 are connected.

  The program memory 36 includes an authentication application program 36a for controlling the entire flow of authentication processing, a fingerprint verification program 36b for performing verification processing between registered fingerprint image data and read fingerprint image data, and an encrypted fingerprint image. A decryption / signature verification program 36c for performing data decryption processing and digital signature data verification processing is stored.

  The data memory 37 includes a personal ID information memory 37a for storing identification information of each registered user, a registered fingerprint image memory 37b for storing fingerprint image data of each registered user, and encryption decryption. Key information / certificate memory 37c is prepared for storing key information for authentication and certificate information for digital signature verification.

  Next, the operation of each part of the circuit in the ring fingerprint reader 10 (10 ′) and the external information processing system 30 configured as described above will be described.

  FIG. 5 is a flowchart showing an operation process of the ring fingerprint reader 10 (10 ′) and the external information processing system 30.

  Here, the external information processing system 30 is installed in, for example, an entrance / exit management gate that requires authentication of the individual, and the user enters and exits the room using the ring fingerprint reader 10 (10 ′). The operation process will be described.

  First, the external information processing system 30 follows the authentication application program 36a from the security / service control unit 35 via the system control unit 34, the communication control unit 33, and the wireless transmission / reception unit 32 to the ring of the user who has approached the entrance / exit management gate. A command signal for instructing to read and input fingerprint image data is transmitted to the fingerprint reader 10 (step C1).

  When the user's ring-type fingerprint reader 10 approaching the entrance / exit management gate receives a fingerprint reading command signal transmitted from the external information processing system 30 via the wireless transmission / reception unit 28 and communication control unit 27 ( In step A1), it is determined that the authentication processing unit 24 has received an instruction to read fingerprint data (step A2).

  Then, after the fingerprint sensor unit including the light source 14 to the image sensor 17 is initialized by the authentication control unit 24 (step A3), the light source 14 is set to a predetermined illuminance and the image sensor 17 is set to a predetermined image gain. It is adjusted and preprocessing for reading is performed (step A4).

  Then, when the user rotates and slides the ring head portion 13 of the ring type fingerprint reader 10 over the range a to b of the inner ring 11, an optical fingerprint image Gx is captured by the image sensor 17 (step A5). The fingerprint image data Gpic imaged and read by the image sensor 17 is subjected to post-processing such as data normalization, feature point extraction, and data compression in the fingerprint image signal processing unit 21 and is stored in the fingerprint data memory 22. (Step A6).

  Then, the fingerprint image data of the user stored in the fingerprint data memory 22 is output and transferred to the encryption / signature processing unit 23 (step A7 → B1), and encrypted with a prestored encryption key (step B2). ), This encrypted fingerprint image data + personal ID information + digital certificate is set as signed data (step B3).

  This signed data is created as a digest hashed by a hash function (step B4), and electronic signature data is created by signing and encrypting the digest (hash value) of this signed data with a pre-stored signature key. (Step B5).

  Then, the encrypted fingerprint image data with a signature composed of the signed data and the electronic signature data created in the encryption / signature processing unit 23 is output and transferred to the authentication control unit 24 (step B6 → A8). The encrypted fingerprint image data with the signature is transmitted from the input / output control unit 25 to the external information processing system 30 via the communication control unit 27 and the wireless transmission / reception unit 28 (step A9).

  In the external information processing system 30, the encrypted fingerprint image data with a signature transmitted and transferred from the ring fingerprint reader 10 is received by the wireless transmission / reception unit 32 and is transmitted to the system control unit 34 via the communication control unit 33. Input (step C2).

  Then, the encrypted fingerprint image data with a signature received and input to the system control unit 34 of the external information processing system 30 is subjected to decryption processing of the encrypted fingerprint image data according to the decryption / signature verification program 36c. At the same time, signature verification processing is performed (step C3).

  Here, it is determined whether decryption and signature verification of the encrypted fingerprint image data with the signature is successful (step C4), and if it is determined that the decryption and signature verification are successful, the fingerprint verification program 36b. Accordingly, the combined read fingerprint image data and the registered fingerprint image data registered and stored in the registered fingerprint memory 37b are collated (step C5).

  Then, when the read fingerprint image data is matched with the registered fingerprint image data, and it is determined that the verification of the personal fingerprint is successful (step C6), a successful fingerprint authentication notification is sent to the security / service control. The unit 35 transmits the information to the unlocking device of the entrance / exit management gate, for example, and the entrance / exit gate is automatically unlocked (steps C7, C8).

  Accordingly, the user does not need to bother placing his / her finger in the fingerprint reading window of the personal authentication device or the like, and always uses the ring-type fingerprint reading device 10 (10 ′) as the finger F of his / her hand H. You can easily authenticate yourself just by wearing it.

  Further, in this ring-type fingerprint reader 10 (10 ′), the fingerprint image at the base of the finger F wearing the reader 10 (10 ′) is in a certain range a as the outer ring 12 rotates and slides. ˜b, it is read as fingerprint image data Gpic having a width and length corresponding to the scanning of the image sensor 17 of the one-line CCD, so that it can be acquired as fingerprint image data having a sufficient amount of information for fingerprint authentication.

  On the other hand, if it is determined in step C4 that the decryption or signature verification of the encrypted fingerprint image data with the signature has failed, a message “decryption NG” is output by the input / output device 38 (step C4). → C9).

  If it is determined in step C6 that the fingerprint image data does not match with the registered fingerprint image data, and the verification of the personal fingerprint has failed, the input / output device 38 sets “ The message “Authentication NG” is output (steps C6 → C10).

  Further, in step A2 in the ring-type fingerprint reading device 10, in the state where the reception determination of the fingerprint data reading instruction is not performed, other determination and processing such as fingerprint image data input / output to / from the fingerprint data memory 22 is performed. (Step A2 → A10 → A11).

  In the configuration and operation processing of the electronic circuit of the ring-type fingerprint reader 10 (10 ') shown in FIGS. 4 and 5, the read fingerprint image data is encrypted and electronic signature processing is performed. The obtained encrypted fingerprint image data with a signature is transferred to the external information processing system 30 so that actual fingerprint authentication processing is performed externally. For example, the fingerprint verification function unit in the external information processing system 30 is also a ring. The fingerprint reader 10 (10 ') may be configured so that the ring fingerprint reader 10 (10') performs output until the collation result between the read fingerprint image data and the registered fingerprint image data.

  In the ring fingerprint reader 10 (10 ′) of the first embodiment, the fingerprint image data on the surface of the base of the finger F on which the ring fingerprint reader 10 (10 ′) is mounted is read to authenticate the person. The finger F wearing the ring type venous tube reader 10A (10B) is described as being described in the ring type venous tube reader 10A (10B) of the second embodiment. It is also possible to read the venous blood vessel image data inside the root of the base and obtain it as biometric information to be authenticated.

(Second Embodiment)
FIG. 6 is a plan view showing a configuration of a scattered light ring-type vein reading device 10A according to the second embodiment of the present invention.

  In this scattered light type ring-type vein reading device 10A, the same components as those of the scattered light type ring-type fingerprint reading device 10 'shown in FIG. To do.

  In this scattered light type ring-type vein reading device 10A, an illumination light source 14b is provided inside the transparent inner ring 11 at a position facing the ring head 13 and the finger F with the imaging element 17 therebetween, Scattered light propagating from the illumination light source 14b to the inside of the inner ring 11 with respect to the large-diameter side wall surface except for the rotational sliding ranges a to b of the ring head portion 13 inside the inner ring 11. A number of reflective scattering plates m1, m2,... are provided for reflecting x1, x2,... in the direction of the sliding range ab of the ring head 13 with the finger F in between.

  Then, an optical filter 16f is attached to the optical image capturing end surface of the imaging optical system 16 of the imaging device 17 incorporated in the ring head unit 13.

  That is, in the scattered light type ring vein reading device 10A configured as described above, the ring head portion 13 of the outer ring 12 is connected to the inner ring 11 in the same manner as the ring fingerprint reading device 10 (10 '). When the optical image is read while rotating and sliding over the range a to b, the scattered light x1, x2,... Based on the illumination from the illumination light source 14b is uniformly incident on the inside of the finger F. Optical blood vessel pattern images Q1, Q2,... Corresponding to the tissue of the venous blood vessel Fp and bone / tendon sheath Fc inside the finger F are read through the optical filter 16f of the ring head unit 13, and the imaging optical element 17 Venous blood vessel pattern image data Fpic (see FIG. 8) having a width and a length corresponding to the scanning ranges a and b of the system 16 is captured and captured.

  FIG. 7 is a plan view showing a configuration of a transmitted light ring-type vein reading device 10B according to the second embodiment of the present invention.

  In this transmitted light type ring type vein reading device 10B, the same components as those in the scattered light type ring type vein reading device 10A shown in FIG. To do.

  In this transmitted light type ring-type vein reading device 10B, a plurality of illuminations are provided without providing the reflective scattering plates m1, m2,... Provided in the inner ring 11 of the scattered light reading device 10A shown in FIG. The light sources 14b1 and 14b2 (two in the present embodiment) are disposed evenly distributed except for the rotational sliding ranges a to b of the ring head portion 13 inside the inner ring 11. Is uniformly illuminated from the facing direction of the ring head portion 13 provided with the image sensor 17.

  That is, in this transmitted light type ring-type vein reading device 10B, the light emitted from the plurality of illumination light sources 14b1 and 14b2 in the inner ring 11 illuminates the inside of the finger F evenly. In the same manner as the scattered light type ring-type vein reading device 10A in FIG. 1, the optical image is read while rotating and sliding the ring head portion 13 of the outer ring 12 over the range a to b of the inner ring 11. Optical blood vessel pattern images Q1, Q2,... Corresponding to the tissue of the venous blood vessel Fp and bone / tendon sheath Fc inside F are read through the optical filter 16f of the ring head unit 13, and the imaging optical system 16 Venous blood vessel pattern image data Fpic (see FIG. 8) having a width and a length corresponding to the scanning ranges a to b are captured and captured.

  FIG. 8 is a diagram showing venous blood vessel pattern image data Fpic read with a length in the range ab when the ring-type vein reading device 10A (10B) is attached to the finger F of the hand H. FIG.

  In either case of the scattered light type ring-type vein reading device 10A shown in FIG. 6 or the transmitted light type ring-type vein reading device 10B shown in FIG. Is provided with an encoder function for detecting the rotational sliding distance of the outer peripheral ring 12 with respect to 11 at regular intervals, and the optical blood vessel pattern images Q1, Q2,. By controlling the capture timing, higher-definition and accurate venous blood vessel pattern image data Fpic can be obtained.

  In addition, regarding the configuration and operation processing of the electronic circuit of the external information processing system based on the ring type vein reader 10A (10B) and the read information in the second embodiment, the first embodiment shown in FIGS. It is the same as the configuration and operation processing of the electronic circuit of the ring type fingerprint reader 10 (10 ′) and the external information processing system 30 based on the read information in the embodiment, and only the target of the read image is the fingerprint image and the vein pattern Since only the image differs, the illustration and description thereof are omitted.

  Therefore, even when the ring-type vein reading device 10A (10B) according to the configuration of the second embodiment is used, the user has to bother to put his / her finger in the fingerprint reading window of the personal authentication device or the like. First, the user can be easily authenticated by simply mounting the ring-type vein reading device 10A (10B) on the finger F of his / her hand H at all times.

  Also in this ring-type vein reading device 10A (10B), the blood vessel pattern image at the base of the finger F wearing the reading device 10A (10B) is in a certain range a as the outer ring 12 rotates and slides. ˜b, it is read as vein blood vessel pattern image data Fpic having a width and length corresponding to the scanning of the image sensor 17 of one line CCD, so that it can be obtained as blood vessel pattern image data having an information amount sufficient for fingerprint authentication. .

  In the ring-type fingerprint reader 10 (10 ′) of the first embodiment shown in FIGS. 1 and 3, the fingerprint image data Gpic on the base of the finger F is read, and the FIGS. The ring-type vein tube reader 10A (10B) of the second embodiment shown in FIG. 6 is configured as a device that reads the vein blood vessel pattern image Fpic at the base of the finger F, but the ring-type fingerprint / vein of the next third embodiment As described in the tube reading device 10X (10Y), it may be configured as a device that switches and reads both the fingerprint image data Gpic at the base of the finger F and the venous blood vessel pattern image Fpic.

(Third embodiment)
FIG. 9 is a plan view showing a configuration of a fixed transmission light type ring fingerprint / venous tube reader 10X according to the third embodiment of the present invention.

  The fixed transmission light type ring fingerprint / venous tube reader 10X includes the scattered light type ring fingerprint reader 10 'shown in FIG. 3 and the transmitted light type ring type vein reader reading shown in FIG. The apparatus 10B is configured in combination, and the same components as those of the readers 10 'and 10B are denoted by the same reference numerals and description thereof is omitted.

  That is, in this fixed transmission light type ring fingerprint / venous tube reader 10X, a fingerprint illumination light source 14a for obtaining scattered light x propagating in an annular shape is arranged in a transparent hollow inner ring 11a, A plurality of finger tissue illumination light sources 14b1, 14b2 (two in this embodiment) for obtaining transmitted light Q1, Q2,... Of finger tissue F (Fc) are equally distributed in the transparent hollow inner ring 11a. Distributed and configured.

  When reading the fingerprint image data Gpic, the fingerprint illumination light source 14a is turned on, and when the venous blood vessel pattern image data Fpic is read, the finger tissue illumination light sources 14b1 and 14b2 are turned on (see FIG. (Not shown).

  That is, in this fixed transmission type ring fingerprint / venous tube reader 10X, when a fingerprint image is read, the light emitted by the illumination light source 14a in the inner ring 11a is scattered in the inner ring 11a. The light x propagates in the form of a ring and illuminates the surface of the finger F on average, and the ring head portion 13 of the outer ring 12 is connected to the inner ring 11a in the same manner as the scattered light type ring fingerprint reader 10 '. By reading the optical fingerprint image Gx while rotating and sliding over the range a to b, the imaging element 17 corresponds to the scanning range a to b of the imaging optical system 16 as shown in FIG. Fingerprint image data Gpic of width and length is imaged and captured.

  In the ring fingerprint / venous tube reader 10X, when a blood vessel pattern image is read, the light emitted by the plurality of illumination light sources 14b1 and 14b2 in the inner ring 11a illuminates the inside of the finger F evenly. In the same manner as in the transmitted light type ring-type vein reading device 10B, the optical image is read while the ring head portion 13 of the outer ring 12 rotates and slides over the range a to b of the inner ring 11. Thus, optical blood vessel pattern images Q 1, Q 2,... Corresponding to the tissues of the venous blood vessel Fp and the bone / tendon sheath Fc inside the finger F are read through the imaging optical system 16 of the ring head unit 13. The vein blood vessel pattern image data Fpic (see FIG. 8) having a width and a length corresponding to the imaging scanning ranges a to b are captured and captured.

  Even in the case of this fixed transmitted light type ring fingerprint / venous tube reader 10X, although not shown, an encoder function for detecting the rotational sliding distance of the outer ring 12 relative to the inner ring 11a at regular intervals. And obtaining the higher-definition and accurate fingerprint image data Gpic and venous blood vessel pattern image data Fpic by controlling the timing of capturing the optical image by the image sensor 16 in synchronization with the detection of the rotational distance at regular intervals. Can do.

  FIG. 10 is a plan view showing the configuration of a rotary transmitted light ring fingerprint / venous tube reader 10Y according to the third embodiment of the present invention.

  In this rotary transmitted light type ring fingerprint / venous tube reader 10Y, the same components as those in the reflected light type ring fingerprint reader 10 shown in FIG. Is omitted.

  In this rotationally transmitted light type ring fingerprint / venous tube reader 10Y, the inner ring ring 43 includes three ring head portions 43 of the outer ring 41 as one place. Rotating rollers 42a to 42c are provided for smooth rotation and sliding contact with the peripheral ring 11.

  Further, the ring head portion 43 of the outer ring 41 includes a roller that rotates in sliding contact with the inner ring 11 and a rotation transmission gear. The rotation amount of the outer ring 41 is detected, and the rotation detection signal is transmitted to the circuit board 18. A rotary encoder (rotation detector) 44 is provided for supplying to the motor. The imaging device 17 controls the timing of the imaging process in synchronization with the rotation detection signal from the rotary encoder (rotation detector) 44.

  Further, two finger tissue illuminations 14b1 and 14b2 are disposed at two equally dispersed positions facing the ring head portion 43 of the outer peripheral ring 41 so that the outer peripheral ring 41 can be freely rotated with respect to the inner peripheral ring 11. Even in the moving position, the inside of the finger F is transmitted and illuminated uniformly from the finger tissue illumination light sources 14b1 and 14b2 at fixed positions as viewed from the imaging optical system 16 of the ring head unit 43.

  When reading the fingerprint image data Gpic, the fingerprint illumination light source 14a in the ring head unit 43 is turned on, and when reading the venous blood vessel pattern image data Fpic, the finger tissue illumination light sources 14b1 and 14b2 are turned on. A read switching function (not shown) is provided.

  FIG. 11 is a diagram showing an image reading state according to the entire circumference (360 degrees) scanning R1 and R2 of the finger F by the rotary transmission light type ring fingerprint / venous tube reading device 10Y.

  FIG. 12 is a view showing a use state in which the ring-type fingerprint / venous tube reader 10Y of the rotationally transmitted light type is mounted on the finger F of the hand H. FIG.

  That is, in this rotary transmission type ring fingerprint / venous tube reader 10Y, when a fingerprint image is read, the light emitted from the fingerprint illumination light source 14a in the ring head 43 passes through the inner ring 11a. It illuminates the surface of the finger F at a position corresponding to the imaging optical system 16, and reads the optical fingerprint image Gx while rotating and sliding the ring head portion 43 of the outer ring 41 over the entire circumference of the finger F. (See FIGS. 11 and 12) From the image sensor 17, the fingerprint image data Gpic having a width and a length corresponding to the entire scanning of the imaging optical system 16 in synchronization with the rotation amount detection signal from the rotary encoder 44. Is captured and captured.

  In addition, when reading a blood vessel pattern image in the ring-shaped fingerprint / vein tube reader 10Y of the same rotation transmitted light type, it is emitted by light sources 14b1 and 14b2 for illuminating finger tissues distributed in two places on the outer ring 41. The light illuminates the inside of the finger F evenly. As shown in FIGS. 11 and 12, the optical image is read while the ring head portion 43 of the outer ring 41 rotates and slides over the entire circumference of the finger F. Thus, the optical blood vessel pattern images Q1, Q2,... Corresponding to the tissue of the venous blood vessel Fp and the bone / tendon sheath Fc inside the finger F are imaged by the ring head unit 13 in synchronization with the rotation amount detection signal from the rotary encoder 44. The venous blood vessel pattern image data Fpic having a width and length corresponding to the entire circumference scanning is captured and captured from the image sensor 17. .

  The configuration and operation process of the electronic circuit of the external information processing system based on the ring-type fingerprint / venous tube reader 10X (10Y) and the read information in the third embodiment are shown in FIGS. The configuration and operation processing of the electronic circuit of the ring type fingerprint reader 10 (10 ') and the external information processing system 30 based on the read information in the first embodiment are the same, and the targets of the read image are the fingerprint image and the vein Since it is only possible to switch between pattern images, illustration and description thereof are omitted.

  Therefore, even when the ring type fingerprint / venous tube reader 10X (10Y) according to the configuration of the third embodiment is used, the user does not bother to put his / her finger in the fingerprint reading window of the user authentication device or the like. It is not necessary, and the user can be easily authenticated by simply attaching the ring fingerprint / venous tube reader 10X (10Y) to the finger F of his / her hand H at all times.

  Also in this ring-type fingerprint / venous tube reader 10X (10Y), the fingerprint image and blood vessel pattern image at the base of the finger F wearing the reader 10A (10B) are rotated and slid on the outer ring 12. In the range of 360 degrees, it is read as fingerprint image data Gpic and venous blood vessel pattern image data Fpic having a width and length corresponding to the entire circumference scanning of the image sensor 17 of the one-line CCD. As fingerprint image data and blood vessel pattern image data, it can be switched and acquired as necessary.

  The present invention is not limited to the above-described embodiments, and the embodiments can be variously modified without departing from the scope of the invention. Further, each of the embodiments includes inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in each embodiment or some constituent features are combined, the problems described in the column of the problem to be solved by the invention can be solved. When the effects described in the column of the effect of the invention can be obtained, a configuration in which these constituent elements are deleted or combined can be extracted as an invention.

1 is a plan view showing a configuration of a reflected light type ring fingerprint reader 10 according to a first embodiment of the present invention. The figure which shows the fingerprint image data Gpic read by the use state and the length of the range ab which the said ring type fingerprint reader 10 was mounted | worn with the finger F of the hand H. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a configuration of a scattered light type ring fingerprint reader 10 'according to a first embodiment of the present invention, where FIG. 1 (A) is an overall plan view and FIG. 1 (B) is an illumination optical system thereof. FIG. The block diagram which shows the structure of the electronic circuit of the external information processing system 30 based on the said ring type fingerprint reader 10 (10 ') and the read information. 6 is a flowchart showing an operation process of the ring fingerprint reader 10 (10 ′) and the external information processing system 30. The top view which shows the structure of 10 A of scattered light type ring-type vein reading apparatuses which concern on 2nd Embodiment of this invention. The top view which shows the structure of the transmitted light type ring-type vein reader 10B which concerns on 2nd Embodiment of this invention. The figure which shows the venous blood vessel pattern image data Fpic read by the length of the range ab by mounting | wearing the finger F of the hand H with the said ring type vein tube reader 10A (10B). The top view which shows the structure of the fixed permeation | transmission type | mold ring-type fingerprint / venous-tube reader 10X which concerns on 3rd Embodiment of this invention. The top view which shows the structure of the ring-type fingerprint / venous-tube reader 10Y of a rotation transmitted light type which concerns on 3rd Embodiment of this invention. The figure which shows the image reading state according to the perimeter (360 degree | times) scanning R1, R2 of the finger | toe F by the said rotation transmission light type ring fingerprint / vein tube reader 10Y. The figure which shows the use condition which mounted | wore the finger F of the hand H with the said rotation transmitted light type ring fingerprint / vein tube reader 10Y.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Reflection type ring fingerprint reader 10 '... Scattered light type ring fingerprint reader 10A ... Scattered light type ring type vein reader 10B ... Transmitted light type ring type vein reader 10X ... Fixed Transmitted light ring fingerprint / venous tube reader 10Y ... Rotating transmitted light ring fingerprint / venous tube reader 11 ... Transparent inner ring 11a ... Transparent hollow inner ring 12, 41 ... Outer ring 13, 43 ... Ring head part 14, 14a ... Fingerprint illumination light source 14b, 14b1, 14b2 ... Finger tissue illumination light source 15 ... Illumination optical system 16 ... Imaging optical system 16f ... Optical filter 17 ... Imaging element 18 ... Circuit board 21 ... Fingerprint ( (Venous tube pattern) image signal processing unit 22... Fingerprint (venous tube pattern) data memory 23... Encryption / signature processing unit 24. ... Input / output control unit 26 ... Battery 27, 33 ... Communication control unit 28, 32 ... Wireless transmission / reception unit 29,31 ... Antenna 30 ... External information processing system 34 ... System control unit 35 ... Security / service control unit 36 ... Program memory 36a ... Authentication application program 36b ... Fingerprint (vein tube pattern) verification program 36c ... Decryption / signature verification program 37 ... Data memory 37a ... Personal ID information memory (vein tube pattern) memory 37b ... Registered fingerprint (vein tube pattern) memory 37c ... Key information / certificate memory 38 ... Input / output devices 42a, 42b, 42c ... Rotary roller 44 ... Rotary encoders m1, m2, ... Reflection scattering plate H ... Hand F ... Finger G ... Fingerprint Fp ... Venous blood vessel Fc ... Bone / tendon sheath Gpic ... Fingerprint image data Fpic ... Venous blood vessel pattern Image data

Claims (6)

Ring-shaped and transparent inner ring that directly contacts the outer surface of the finger,
An outer peripheral ring that can be rotated and slid relative to the inner peripheral ring over the outer periphery of the inner peripheral ring;
A ring head projecting outward from a portion of the outer ring;
An illumination light source disposed within the ring head portion and illuminating the surface of the finger through the inner ring;
An image sensor that is disposed inside the ring head portion and captures a fingerprint image of the surface of the finger illuminated by the illumination light source;
An image memory for storing fingerprint image data imaged in accordance with a scanning range of the image sensor as the outer ring rotates and slides;
A ring-type reading device comprising: A ring-shaped transparent hollow inner ring that directly contacts the outer surface of the finger;
An illumination light source that is disposed inside the hollow of the inner ring and illuminates the surface of the finger by propagating scattered light in the inner ring,
An outer ring that can be rotated and slid relative to the inner ring, overlaid on the outer circumference of the inner ring;
A ring head projecting outward from a portion of the outer ring;
An image sensor that is disposed inside the ring head unit and captures a fingerprint image of the surface of the finger illuminated by the illumination light source;
An image memory for storing fingerprint image data imaged in accordance with a scanning range of the image sensor as the outer ring rotates and slides;
A ring-type reading device comprising: Ring-shaped and transparent inner ring that directly contacts the outer surface of the finger,
An illumination light source disposed inside the inner ring and illuminating through the inside of the finger contacting the inner circumferential surface of the inner ring;
An outer ring that can be rotated and slid relative to the inner ring, overlaid on the outer circumference of the inner ring;
A ring head projecting outward from a portion of the outer ring;
An image sensor that is disposed inside the ring head portion and images a venous blood vessel pattern image inside a finger that is transmitted and illuminated by the illumination light source; and
An image memory for storing venous blood vessel pattern image data inside the finger imaged corresponding to the scanning range of the image sensor as the outer ring rotates and slides;
A ring-type reading device comprising: A ring-shaped transparent hollow inner ring that directly contacts the outer surface of the finger;
A light source for fingerprint illumination that is disposed inside the hollow of the inner ring and propagates scattered light in the inner ring to illuminate the surface of the finger;
A light source for lighting inside the finger that is disposed inside the inner ring and illuminates through the inside of the finger that contacts the inner peripheral surface of the inner ring;
An outer ring that can be rotated and slid relative to the inner ring, overlaid on the outer circumference of the inner ring;
A ring head projecting outward from a portion of the outer ring;
By switching between the fingerprint image of the surface of the finger that is disposed inside the ring head unit and illuminated by the light source for fingerprint illumination, or the vein pattern image inside the finger that is transmitted and illuminated by the light source for internal illumination of the finger An image sensor for imaging;
Fingerprint image data imaged corresponding to the scanning range of the image sensor as the outer ring rotates and slides, or an image memory for storing vein blood vessel pattern image data inside the finger;
A ring-type reading device comprising: Ring-shaped and transparent inner ring that directly contacts the outer surface of the finger,
An outer peripheral ring that can be rotated and slid relative to the inner peripheral ring over the outer periphery of the inner peripheral ring;
A ring head projecting outward from a portion of the outer ring;
A light source for internal illumination of a finger that is provided on the outer peripheral ring facing the ring head portion of the outer peripheral ring and illuminates through the inner periphery of the finger that contacts the inner peripheral surface of the inner peripheral ring. When,
A light source for fingerprint illumination that is disposed inside the ring head portion and illuminates the surface of the finger through the inner ring;
By switching between the fingerprint image of the surface of the finger that is disposed inside the ring head unit and illuminated by the light source for fingerprint illumination, or the vein pattern image inside the finger that is transmitted and illuminated by the light source for internal illumination of the finger An image sensor for imaging;
Fingerprint image data imaged corresponding to the scanning range of the image sensor as the outer ring rotates and slides, or an image memory for storing vein blood vessel pattern image data inside the finger;
A ring-type reading device comprising: further,
6. The ring-type reading device according to claim 1, further comprising transmission means for wirelessly transmitting the image data stored in the image memory to an external information processing system.

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