JP2010079609A - Personal authentication device, personal authentication program, and intercom system with personal authentication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a personal authentication device, personal authentication program and an intercom system with the personal authentication device, capable of quickly performing authentication in proper sequence when a plurality of kinds of information are used to perform authentication. <P>SOLUTION: As a visitor gets closer to a slave unit 10 of the intercom system 1 installed in a house 7, authentication processings using different personal information according to a distance between the two are performed sequentially. When the visitor enters in a face feature authentication range A1, authentication is performed based on face feature data of the visitor extracted from an image imaged by a camera of the slave unit 10. Unless the result of authentication clarifies whether the visitor is a registrant, authentication is performed based on iris data of the visitor when the visitor gets still closer to the slave unit 10 and enters in an iris authentication range A2. If it is still unclear whether the visitor is a registrant, authentication is performed based on handwriting data of the visitor inputted from an operation panel of the slave unit 10 when the visitor gets still further closer to the slave unit 10 and enters in a writing authentication range A3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a personal authentication device, a personal authentication program, and an intercom system including the personal authentication device.

In recent years, the need for ensuring security has increased in various situations, and techniques for authenticating individuals have attracted attention. Among personal authentication technologies, for example, there is a technology called multimodal authentication that performs authentication using a plurality of types of biometric information. In the case of such personal authentication using a plurality of types of information, the plurality of types of information acquired from the person to be authenticated are all processed, so that the authentication accuracy is improved, but the authentication processing may take time. Therefore, for example, the composite authentication system proposed in Patent Document 1 is based on authentication performance when authentication is performed using each of a plurality of types of information registered in advance for each registrant. Determine the order in which information is used for authentication. Then, by performing authentication in the determined order, it becomes possible to quickly authenticate the registrant.
JP 2003-186836 A

  In the composite authentication system described in Patent Document 1, when the person to be authenticated is a registrant, authentication performance when authentication is performed using each piece of information corresponding to the person to be authenticated is registered in advance. Based on this authentication performance, the order of authentication can be determined. However, the authentication performance varies if the environment in which the person to be authenticated is placed at the time of registration and authentication (for example, the distance between the person to be authenticated and the authentication means, the level of ambient light and ambient sound) is different. there is a possibility. Further, when the person to be authenticated is not a registrant, the authentication performance when each information is used is not registered. Therefore, the order in which multiple types of information are used for authentication may not be appropriately determined based on the authentication performance.

  The present invention has been made to solve the above-described problems, and when performing authentication using a plurality of types of information, a personal authentication apparatus and a personal authentication program capable of promptly performing authentication in an appropriate order And an intercom system provided with a personal authentication device.

  To achieve the above object, a personal authentication device according to claim 1 is a personal authentication device that authenticates an individual using at least one of a plurality of types of personal information, and the plurality of types of personal information. A plurality of authentication means for performing personal authentication using each of the authentication information, and one of the plurality of types of personal information of the person to be authenticated according to the environment in which the person to be authenticated is currently placed. A plurality of authentication means, the authentication means of which the personal information used for authentication is of the same type as the person-to-be-authenticated person information, the person-to-be-authenticated person information, and a plurality of persons And authenticating the person to be authenticated by collating the personal information of the same type with the information of the person to be authenticated stored in the personal information storage means for storing the plurality of types of personal information corresponding to each of the authentication information, Authentication by As a result, when the person to be authenticated cannot be specified as any one of the plurality of persons, the person to be authenticated information acquisition unit newly acquires the person to be authenticated information according to the environment, and Among the authentication means, an authentication means whose personal information used for authentication is the same type as the authenticated person information newly acquired by the authenticated person information acquiring means is newly stored in the personal information storage means. The person to be authenticated is newly authenticated by collating the personal information of the same type as the acquired person information to be authenticated and the person to be authenticated information.

  In the personal authentication device of the invention according to claim 2, in addition to the configuration of the invention of claim 1, whether or not the authentication result by the authentication means corresponds to one of the plurality of persons as the authentication target When it is indicated that the person is not known, the person-to-be-authenticated person information acquisition means newly acquires the person-to-be-authenticated person information according to the environment.

  In the personal authentication device of the invention according to claim 3, in addition to the configuration of the invention according to claim 1 or 2, the authentication result by the authentication means does not correspond to any of the plurality of persons as the person to be authenticated. The personal information storage means further includes personal information registration means for registering the authenticated person information acquired by the authenticated person information acquisition means.

  In the personal authentication device of the invention according to claim 4, in addition to the configuration of the invention according to any one of claims 1 to 3, the environment receives basic information that is information that is a basis of the person to be authenticated information. It is the distance between the basic information acquisition means acquired from the certifier and the person to be authenticated, and the person to be authenticated information acquisition means uses the personal information of the type corresponding to the distance as the person to be authenticated information. It acquires from the said basic information acquired by the acquisition means, It is characterized by the above-mentioned.

  According to a fifth aspect of the present invention, there is provided a personal authentication program that causes a computer to function as various processing means of the personal authentication device according to any one of the first to fourth aspects.

  An interphone system according to a sixth aspect of the present invention is an interphone system including a slave unit installed outside a room and a master unit connected to the slave unit and installed indoors. Item 4. The personal authentication device according to any one of Items 1 to 3, a notification unit that notifies information in the room, and a notification control unit that controls the notification unit to notify the authentication result of the authentication unit. .

  In the intercom system according to a seventh aspect of the invention, in addition to the configuration of the sixth aspect of the invention, the slave unit includes basic information acquisition means for acquiring basic information that is information that is a basis of the authenticated person information. The environment is a distance between the slave unit and the person to be authenticated, and the person-to-be-authenticated person information acquisition means uses the personal information of a type corresponding to the distance as the person-to-be-authenticated person information. It acquires from the said basic information acquired by the acquisition means, It is characterized by the above-mentioned.

  According to the personal authentication device of the first aspect of the present invention, authenticated person information corresponding to the environment where the authenticated person is placed is acquired, and is the same as the acquired authenticated person information among a plurality of authentication means. Authentication is performed by an authentication unit that performs authentication using various types of personal information. If the person to be authenticated cannot be specified as one of the persons whose personal information is stored in the personal information storage means by the authentication, the person to be authenticated according to the environment where the person to be authenticated is placed. Information is newly acquired and authentication is performed again. That is, when the environment where the person to be authenticated is placed changes, the type of personal information used for authentication of the person to be authenticated changes. Therefore, since multiple types of personal information can be used in an appropriate order according to the environment where the person to be authenticated is placed, authentication can be performed promptly. In addition, since it is not always necessary to acquire and use all of a plurality of types of personal information for recognition, it is possible to reduce the processing capacity required for the apparatus and the load on the person to be authenticated.

  According to the personal authentication device of the invention of claim 2, it is unclear whether or not the person to be authenticated corresponds to one of a plurality of persons by the authentication means using the same type of personal information as the person to be authenticated for authentication. Only in such a case, the authentication process according to the environment is repeated. Therefore, in addition to the effect of the invention described in claim 1, the processing can be completed promptly with higher authentication accuracy.

  According to the personal authentication device of the invention of claim 3, if the person to be authenticated is authenticated as not corresponding to any of a plurality of persons whose personal information is stored in the personal information storage means, The person-to-be-authenticated information acquired by the person acquiring means is registered in the personal information storage means. Therefore, in addition to the effect of the invention described in claim 1 or 2, it is not necessary to separately store the person-to-be-authenticated information in the personal information storage means, and it can be used for the subsequent authentication processing.

  According to the personal authentication device of the invention of claim 4, the type of personal information corresponding to the distance between the basic information acquisition means for acquiring basic information from the authenticated person and the authenticated person is acquired as the authenticated person information. Used for authentication. Therefore, in addition to the effect of the invention according to any one of claims 1 to 3, a plurality of types of personal information are provided in an appropriate order according to the distance between the two while the person to be authenticated approaches the basic information acquisition means. Authentication can be performed promptly.

  The personal authentication program according to claim 5 can cause the computer to function as various processing means of the personal authentication device according to any one of claims 1 to 4. Therefore, the effect of the invention according to any one of claims 1 to 4 can be achieved.

  According to the intercom system of the invention according to claim 6, prompt personal authentication is performed by the master unit, and the result is notified indoors. Therefore, in addition to the effects of the invention according to any one of claims 1 to 3, a person in the room can quickly obtain information on the visitor and can appropriately respond.

  According to the intercom system of the invention of claim 7, while the person to be authenticated approaches the slave unit, the authentication is promptly performed using a plurality of types of personal information in an appropriate order according to the distance between the two. Is done. Therefore, in addition to the effect of the invention described in claim 6, a human being in the room may be able to obtain information on the visitor before the visitor reaches the child machine, thereby enabling a more appropriate response.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. These drawings are used for explaining the technical features that can be adopted by the present invention, and the configuration of the apparatus and the flowcharts of various processes described are not intended to be limited to the drawings. This is just an illustrative example.

  First, an embodiment in which a personal authentication device according to the present invention is applied to an intercom system will be described with reference to FIGS. First, a schematic configuration of the intercom system 1 and an outline of processing performed in the intercom system 1 will be described with reference to FIG. FIG. 1 is an explanatory diagram showing the relationship between the distance between the visitor 2 and the handset 10 of the intercom system 1 and the application range of various authentication processes.

  As shown in FIG. 1, the intercom system 1 of the present embodiment is installed in a house 7. More specifically, the intercom system 1 includes a child device 10 installed outside the house 7, for example, near the entrance, and a parent device 20 connected to the child device 10 through a signal line 30 and installed indoors. ing. Since a call can be made between the child device 10 and the parent device 20, a person in the room of the house 7 (hereinafter referred to as a room responder) can respond to the outdoor visitor 2 without opening the entrance. it can.

  Although details will be described later, the handset 10 includes a camera 113 (see FIG. 2). Based on the visitor's image captured by the camera 113, the master device 20 can perform authentication processing using facial feature data and authentication processing using iris data. Furthermore, the subunit | mobile_unit 10 is provided with the operation panel 114 (refer FIG. 2) with which the touchpad was incorporated. When the visitor 2 performs a writing input to the operation panel 114 using the touch pen 115 (see FIG. 2), the parent device 20 can also perform a recognition process using handwriting data. That is, the master device 20 is a personal authentication device that can perform personal authentication by a plurality of authentication methods.

  Although depending on the performance of the imaging means, in general, the authentication method using facial feature data can be applied even if the distance between the person to be authenticated and the imaging means for capturing an image is about 3 m. On the other hand, in order to apply the authentication method using iris data, the distance between the person to be authenticated and the imaging means needs to be within about 0.5 m. In other words, the authentication method using face feature data can be applied at a longer distance than the authentication method using iris data. Further, in order to apply the authentication method using handwriting data, it is necessary that the person to be authenticated substantially contacts the input means. That is, the distance between them is 0 m. Therefore, in the present embodiment, the range that can be authenticated by the facial feature data within the imaging range of the camera 113 and the range that cannot be authenticated by the iris data can be authenticated by the facial feature authentication range A1 and the iris data. The range is the iris authentication range A2 and the range where the distance from the child device 10 is 0 m, that is, the position where the visitor 2 is substantially in contact with the child device 10 is the handwriting authentication range A3.

  Since the visitor 2 who visits the house 7 walks toward the house 7 as shown in FIG. 1, the distance between the visitor 2 and the handset 10 gradually decreases. That is, the visitor 2 enters the face feature authentication range A1, the iris authentication range A2, and the handwriting authentication range A3 in order. Therefore, in the parent device 20, the authentication method is switched according to the range where the visitor is present, that is, the distance from the child device 10. Specifically, when the visitor 2 enters the facial feature authentication range A1, authentication processing using facial feature data is performed while in the A1. When a visitor enters the iris authentication range A2 from the face feature authentication range A1, authentication processing using iris data is performed while in the A2. Further, when the visitor 2 reaches the child device 10 and inputs from the operation panel 114, it means that it has reached the handwriting authentication range A3, and the authentication process using handwriting data is performed. Details of these processes will be described later.

  Below, with reference to FIGS. 2-6, the structure of the subunit | mobile_unit 10 and the main | base station 20 which are the components of the intercom system 1 is demonstrated. FIG. 2 is an external front view of the child device 10. FIG. 3 is an external front view of the base unit 20. FIG. 4 is a block diagram showing an electrical configuration of the intercom system 1. FIG. 5 is an explanatory diagram of a storage area that the flash ROM 220 has. FIG. 6 is an explanatory diagram showing an example of data stored in the registrant information storage area 221 of the flash ROM 220.

  With reference to FIG. 2, the physical structure of the subunit | mobile_unit 10 is demonstrated. As shown in FIG. 2, the handset 10 includes a substantially rectangular parallelepiped housing 105, and an operation panel 114 is provided on the lower half of the front surface of the housing 105 (the surface facing the visitor). Yes. A microphone 111 and a speaker 112 are provided on the upper and left sides of the operation panel 114, respectively. Further, a pair of infrared LED illuminations 117 is provided above the microphone 111 and the speaker 112. A camera 113 is provided at the upper center portion of the front surface of the housing 105. Further, the touch pen 115 as an accessory is connected to the housing 105 with a cord.

  The microphone 111 is a device that converts an input voice of a visitor into a voice signal and outputs the voice signal to the parent device 20 via the communication device 150 (see FIG. 4). The speaker 112 is a device that converts the audio signal input from the parent device 20 into sound and outputs the sound. The camera 113 is, for example, a well-known CCD camera, captures a predetermined imaging range in front of the slave unit 10, and outputs an image signal of the captured image to the master unit 20 via the communication device 150. The predetermined imaging range is set in advance so as to include an area where the face of the visitor standing facing the front of the slave 10 at the time of imaging is predicted to be located.

  The operation panel 114 has a built-in liquid crystal panel that is displayed based on an image signal transmitted from the parent device 20, a drive circuit that drives the liquid crystal panel, and a touch pad that is an input device capable of detecting an input position and pressure. Display device. For example, as shown in FIG. 2, an instruction to a visitor is displayed on the operation panel 114. The operation panel 114 also displays a name input field in the course of processing to be described later. When a visitor touches the operation panel 114 using the touch pen 115 attached to the housing 105 or a finger, the position and pressure are detected by the touch pad and output. The infrared LED illumination 117 includes an illuminance sensor, and is lit to illuminate the vicinity of the slave unit 10 when the detected illuminance is lower than a predetermined threshold.

  With reference to FIG. 4, the electrical configuration of the slave unit 10 will be described. As shown in FIG. 4, handset 10 includes CPU 101, ROM 102, RAM 103, microphone 111, speaker 112, camera 113, operation panel 114, human sensor 116, infrared LED illumination 117, and communication device 150. These are all interconnected by a bus.

  The CPU 101 controls the entire child device 10. The ROM 102 stores programs necessary for basic operations of the slave unit 10 and setting values for the programs. The CPU 101 controls the operation of the child device 10 according to a program stored in the ROM 102. The RAM 103 is a storage device for temporarily storing various data.

  The human sensor 116 is a sensor that detects the movement of an object within a predetermined area in front of the child device 10. As the human sensor 116, for example, an infrared sensor that emits infrared rays to an object and detects the object based on a change in the amount of reflected infrared light received can be employed. In addition, a human sensor using ultrasonic waves may be employed. The human sensor 116 sets a region from the child device 10 to the outer boundary of the face feature authentication range A1 illustrated in FIG. 1 as a detection range. That is, the visitor can be detected at the same time as the visitor enters the facial feature authentication range A1. The human sensor 116 constantly detects a moving object, and transmits a signal indicating the result to the parent device 20 via the communication device 150. The communication device 150 is a device that transmits and receives various signals including a control signal, an image signal, and an audio signal to and from the parent device 20 via the signal line 30.

  With reference to FIG. 3, the physical configuration of base unit 20 will be described. As shown in FIG. 3, the parent device 20 includes a housing 205 having a substantially rectangular parallelepiped shape. A response button 215 is provided at the bottom front of the housing 205. A microphone 211 and a speaker 212 are provided above the response button 215. Further, an operation panel 214 is provided above the microphone 211 and the speaker 212.

  The microphone 211 is a device that converts the voice of the room responder into an audio signal and outputs the audio signal to the communication device 250 (see FIG. 2). The speaker 212 receives the audio signal input from the slave device 10. The operation panel 214 is a display device that includes, for example, a liquid crystal panel, a drive circuit, and a touch pad that is an input device capable of detecting an input position and pressure. The screen displayed on 214 includes an information display area 241 on which information related to visitors, input buttons, and the like are displayed, and an image display area on which an image of the imaging area captured by the camera 113 of the slave unit 10 is displayed. The response button 215 is a button that enables a call with the child device 10 via the communication device 250 and the signal line 30. The communication device 250 is the child device 10. Between, via the signal line 30, control signals, a device for transmitting and receiving various signals including the image signals, and audio signals.

  The flash ROM 220 will be described with reference to FIGS. The flash ROM 220 is a nonvolatile semiconductor memory. For example, as shown in FIG. 3, the flash ROM 220 includes a plurality of storage areas including a registrant information storage area 221, a display screen storage area 222, and a notification voice storage area 223.

  In the registrant information storage area 221, information unique to each individual is stored for a plurality of persons. For example, as shown in FIG. 6, the registrant information storage area 221 is provided with an ID column, a name column, a face feature data column, an iris data column, a handwriting data column, and a previous visit date column.

  In the ID column, an ID that is unique information for identifying each individual is stored. The name column stores names of persons (hereinafter referred to as registrants) from which facial feature data, iris data, and handwriting data are acquired. In the face feature data column, numerical data indicating the positions and shapes of facial feature points such as eyebrows, eyes, nose, mouth, and the like are stored as face feature data. In the present embodiment, it is assumed that feature point data corresponding to eyes, nose, and mouth is adopted as face feature data. In the iris data column, for example, data indicating the iris pattern of the registrant's eyes is stored as iris data. In the handwriting data column, as handwriting data, for example, time-series data obtained by sampling the coordinates of the nib and the writing brush at regular time intervals are stored. The previous visit date column stores the date when the registrant visited the house 7 where the intercom system 1 was installed last time as the previous visit date.

  Hereinafter, the name, face feature data, iris data, handwriting data, and previous visit to Japan for each registrant will be collectively referred to as registrant information. Of the above information stored in the registrant information storage area 221, other than the ID and the previous visit to Japan are registered by the user of the parent device 20 or the CPU 201 as appropriate. That is, the user of the master device 20 can register in advance information on persons who are likely to visit the house 7 such as residents, relatives, friends, and neighboring residents of the house 7. Further, in this embodiment, when a person who is not registered visits, the registrant information is newly registered by the CPU 201 in the indoor notification process (see FIG. 10) described later. The ID is information given by the CPU 201 when registrant information is newly registered, and the previous visit date is information that is newly registered or automatically updated by the CPU 201 when it is recognized that the registrant has visited. .

  A display screen storage area 222 shown in FIG. 5 stores a screen template to be displayed on the operation panel 214 of the parent device 20. Although details will be described later, for example, as shown in FIG. 3, a screen having an information display area 241 and an image display area 242 is displayed on the operation panel 214. In this embodiment, since there are a plurality of types of screens displayed on the operation panel 214, the display screen storage area 222 stores a plurality of display screen templates.

  In the notification audio storage area 223, audio data of audio to be output to the speaker 212 of the parent device 20 or the speaker 112 of the child device 10 is stored. As the stored voice data, for example, voice voice data that is output from the speaker 112 of the slave unit 10 and that prompts the visitor to input a name on the operation panel 114 can be cited.

  Below, with reference to FIGS. 7-10, the process performed in the main | base station 20 of the intercom system 1 is demonstrated. FIG. 7 is a flowchart of the main process of base unit 20. FIG. 8 is a flowchart of the face / iris authentication process executed during the main process of FIG. FIG. 9 is a flowchart of the handwriting authentication process executed during the main process of FIG. FIG. 10 is a flowchart of the indoor notification process executed during the main process of FIG. 7 to 10 is executed by the CPU 201 in accordance with a program stored in the ROM 202.

  The main process shown in FIG. 7 is started when the power of the parent device 20 is turned on, is continuously repeated while the power is on, and ends when the power is turned off. First, a reset process is performed (S1). Specifically, all information stored in the RAM 203 is erased. Subsequently, it is determined whether the operation panel 114 of the child device 10 has been operated by a visitor and an input has been performed (S2). This determination is made based on whether or not a signal indicating that an input from operation panel 114 has been detected is received from slave unit 10. When it is determined that the input from the operation panel 114 is not performed (S2: NO), the CPU 201 detects a moving object, that is, an object that seems to be a visitor, by the human sensor 116 of the slave unit 10. It is determined whether a signal indicating this is input from the slave unit 10 to the master unit 20 (S3). If a moving object is not detected (S3: NO), the CPU 201 returns to the determination of whether or not an input has been made from the operation panel 114 (S2).

  If a moving object is detected while the operation panel 114 is not operated (S2: NO, S3: YES), a control signal for starting imaging by the camera 113 is transmitted via the signal line 30 by the communication device 250. Is transmitted to the slave unit 10 (S4). After receiving the control signal from the parent device 20, in the child device 10, the camera 113 always takes an image. The image signal output from the camera 113 is transmitted to the parent device 20 via the signal line 30 by the communication device 150. In base unit 20, processing for converting the image signal received by communication device 250 into data that can be displayed on operation panel 214 is performed according to a separately executed program. That is, an image captured by the camera 113 of the slave unit 10 can be displayed on the operation panel 214 in real time.

  Further, the CPU 201 acquires one frame of the image signal transmitted from the child device 10 and received by the communication device 250, and generates a still image (hereinafter referred to as a captured image) in the imaging region (S5). The generated captured image is stored in the RAM 203.

  Subsequently, face / iris authentication processing is performed (S10 and FIG. 8). In the face / iris authentication process, an authentication process according to data that can be acquired from the acquired captured image is performed. The face / iris authentication process will be described with reference to FIG.

  As shown in FIG. 8, first, a face area is detected from the captured image generated in step S5 of the main process shown in FIG. 7 and stored in the RAM 203 (S101). For the detection of the face area, for example, a method of matching with a pre-stored face pattern or a method of detecting the skin color area can be adopted, but any other known method may be adopted. However, if the visitor is still far from the child device 10 and has not yet reached the face feature authentication range A1 shown in FIG. 1, the face area cannot be detected (S102: NO). Therefore, in this case, since the face feature data and the iris data cannot be extracted, the face / iris authentication process is terminated as it is, and the process returns to the main process shown in FIG.

  On the other hand, when the visitor approaches toward the child device 10 and enters the face feature authentication range A1 shown in FIG. 1 and the face area is successfully detected (S102: YES), it is detected. The face feature data of the visitor is extracted from the face area (S103). Specifically, feature points of eyes, nose and mouth, which are facial feature points, are extracted from the face region, and numerical data indicating these positions and shapes are obtained as visitor facial feature data. Note that if a visitor wears sunglasses or a mask, not all feature points of eyes, nose and mouth may be extracted. You need only the data.

  Further, iris data is extracted (S104). Specifically, for example, the outer boundary and inner boundary of the iris are detected using a difference in brightness, the iris image is cut out from the image of the face region, and the iris pattern (change in light and shade) is encoded. By converting into predetermined data, the iris data of the visitor can be acquired. However, if the visitor is still within the face feature authentication range A1 shown in FIG. 1 and has not reached the iris authentication range A2, iris data cannot be extracted (S105: NO). In this case, authentication processing using the face feature data extracted in step S103 is performed (S107).

  Specifically, for example, the registrant face feature data is sequentially read from the registrant information storage area 221 (see FIG. 6) of the flash ROM 220 and collated with the visitor face feature data, and the dissimilarity DF is calculated. Desired. And, by the relationship between the dissimilarity DF and the first threshold DF1 of the dissimilarity when it is certain that it is the person and the second threshold DF2 of the dissimilarity when it is certain that it is another person, The recognition result is determined. The first threshold value DF1 and the second threshold value DF2 are determined by statistically processing previously collected data and have a relationship of DF1 <DF2.

  If the dissimilarity DF is smaller than the first threshold DF1, it is determined that the visitor is the registered partner of the collation partner, and if the dissimilarity DF is larger than the second threshold DF2, the visitor is the collation partner. It is determined that the person is not a registrant, that is, someone else. Further, when the dissimilarity DF is equal to or higher than the first threshold DF1 and equal to or lower than the second threshold DF2, it is determined that whether or not the visitor is a registered partner of the collation partner is unknown. . The authentication result based on the face feature data is stored in the RAM 203.

  When it is determined that a visitor is a registrant, information indicating that the visitor is a registrant and the ID of the registrant identified as a visitor are stored as an authentication result based on facial feature data. Is done. When the dissimilarity DF is greater than the second threshold value DF2 for all registrant face feature data, the visitor is in a relationship with other registrants. That is, since the visitor is an unregistered person, information indicating that the visitor is an unregistered person is stored as an authentication result based on face feature data. If the dissimilarity DF with at least one registrant's facial feature data is not less than the first threshold value DF1 and not more than the second threshold value DF2, the visitor may be the corresponding registrant. There is. That is, there are visitor candidates. Therefore, information indicating that the visitor is unknown and the ID of the registrant who is a visitor candidate are stored as an authentication result based on the facial feature data. In addition, when there are a plurality of visitor candidates, a plurality of IDs are stored. After the authentication process using the face feature data (S107), the face / iris authentication process ends, and the process returns to the main process shown in FIG.

  On the other hand, when the visitor further approaches the handset 10 and enters the iris authentication range A2 from the face feature authentication range A1 shown in FIG. 1, and the iris data is successfully extracted (S105: YES), the iris data The authentication process is performed (S106). Specifically, the registrant's iris data is sequentially read from the registrant information storage area 221 (see FIG. 6) of the flash ROM 220, and collated with the visitor's iris data to obtain the dissimilarity DI. Then, similarly to the authentication process using the face feature data described above, the first threshold value DI1 for the dissimilarity when the person is sure and the second threshold value DI2 for the dissimilarity when the person is certain. The recognition result based on the iris data is determined and stored in the RAM 203. After the authentication process using iris data (S106), the face / iris authentication process ends, and the process returns to the main process shown in FIG.

  In the main process shown in FIG. 7, after the face / iris authentication process (S10), a room notification process is performed (S20 and FIG. 10). In the room notification process, a process for notifying the authentication result using the face feature data, the iris data, and the handwriting data performed so far is performed. The indoor notification process will be described with reference to FIG.

  As shown in FIG. 10, it is first determined whether or not the visitor is specified as a registrant (S201). That is, either the result of authentication using face feature data or iris data in the face / iris authentication process (see FIG. 8) or the result of authentication using handwriting data in the handwriting authentication process (see FIG. 9) described later is either It is determined whether or not it is determined that the person is the registered person. If the information indicating that the visitor is a registrant and the registrant's ID are stored in the RAM 203 as a recognition result by any authentication process, it is determined that the visitor is a registrant (S201). : YES). Therefore, the CPU 201 outputs a ringing tone from the speaker 212 of the parent device 20 and displays an image of the visitor and the authentication result on the operation panel 214, thereby notifying the room responder of information related to the visitor ( S202).

  Specifically, for example, a screen template when the visitor is a registrant is read from the display screen storage area 222 of the flash ROM 220. Based on the registrant's name read from the registrant information storage area 221 according to the registrant's ID, the previous visit to Japan, and the display data generated from the image signal transmitted from the handset 10, Screen display data is generated and displayed on the operation panel 214. The screen generation method is the same for other screens described below. The screen displayed in step S202 is as shown in FIG. 3, for example. That is, the information display area 241 displays the recognition result that the visitor is a registered person, the name and the previous visit date, and the image display area 242 displays the visitor image. After the notification to the room (S202), the room process ends, the process returns to the main process shown in FIG. 7, and the process proceeds to step S31.

  If the visitor is not identified as a registered person (S201: NO), it is determined whether or not the visitor is identified as an unregistered person (S205). That is, as a result of authentication using face feature data or iris data in the face / iris authentication process (see FIG. 8), or as a result of authentication using handwriting data in the handwriting authentication process (see FIG. 9) described later, It is determined whether the registrant himself / herself has been determined to be another person. When information indicating that the visitor is an unregistered person is stored in the RAM 203 as a recognition result by any authentication process, it is determined that the visitor is an unregistered person (S205: YES).

  In this case, the CPU 201 outputs a ringing tone from the speaker 212 of the parent device 20 and displays the visitor's image and the recognition result on the operation panel 214, thereby notifying the room responder of information related to the visitor. (S206). In the display screen at this time, for example, in the information display area 241 shown in FIG. 3, only the message “visitor is unregistered” is displayed as the recognition result, and the image of the visitor is displayed in the image display area 242. Screen.

  Since the visitor is an unregistered person, the visitor's data is not registered in the registrant information storage area 221 (see FIG. 6) of the flash ROM 220. Therefore, a process of newly registering registrant information is performed based on the data acquired so far (S207). Specifically, a new ID is assigned to this visitor, and the face feature data and iris data acquired in steps S103 and S104 of the face / iris authentication process (see FIG. 8) correspond to the corresponding faces, respectively. It is stored in the feature data column and the iris data column. In addition, the handwriting data acquired in step S153 of handwriting authentication processing (see FIG. 9) described later is stored in the corresponding handwriting data column. If handwriting data has been acquired, the entered name is stored in the name field. Further, the current date is stored in the previous visit date column. After newly registering the registrant information (S207), the indoor notification process ends, the process returns to the main process shown in FIG. 7, and the process proceeds to step S31.

  As described above, when the data of the unregistered person is acquired, by newly registering in the registrant information storage area 221, the user of the parent device 20 saves the trouble of storing the registrant information separately. Can do. Further, the newly registered data can be used for the subsequent authentication processing.

  Note that the facial feature data, iris data, and handwriting data are acquired in this order as the visitor approaches the handset 10. Therefore, if the visitor is identified as a registered person or an unregistered person by the authentication process using facial feature data, the iris data and handwriting data cannot be acquired at this time. If the visitor is identified as a registered person or an unregistered person by the authentication process using iris data, handwriting data cannot be acquired at this point. Therefore, in such a case, the registrant information newly registered in step S207 is only a part, and therefore, when the same person visits next time, the authentication process only needs to be performed on the registered data. If unregistered data can be collected during several visits, the newly collected data may be additionally registered in the registrant information storage area 221.

  If it is not specified that the visitor is an unregistered person (S205: NO), whether or not the authentication process using the handwriting data has been completed based on whether the authentication result using the handwriting data is stored in the RAM 203 or not. Determination is made (S211). If the visitor has already reached the child device 10 and authentication processing using handwriting data has been completed (S211: YES), authentication using face feature data and iris data in the face / iris authentication processing (see FIG. 8) is performed. As a result, and as a result of authentication by handwriting data in handwriting authentication processing (see FIG. 9), which will be described later, it is determined that the visitor is unknown in all cases.

  In this case, the CPU 201 outputs a ringing tone from the speaker 212 of the parent device 20 and displays the visitor's image and the recognition result on the operation panel 214, thereby notifying the room responder of information related to the visitor. (S212). At this time, for example, a message “visitor may be the following registrant” is displayed as a recognition result in the information display area 241 shown in FIG. Also, a message “Please select if there are visitors” is displayed, a selection button indicating the name of the candidate visitor, and a “not applicable” button. In the image display area 242, the image of the visitor is also displayed. The name of the visitor candidate is stored in the RAM 203 in step S106 or S107 of the face / iris authentication process (see FIG. 8), and the name corresponding to this ID is stored in the flash ROM 220. What is necessary is just to acquire from the registrant information storage area 221.

  When the selection button is selected and a visitor candidate is selected (S213: YES), the registrant information stored in the registrant information storage area 221 of the flash ROM 220 is updated corresponding to the selected registrant. (S215). Specifically, in step S103 and S104 of the face / iris authentication process (see FIG. 8) and in step S153 of the handwriting authentication process (see FIG. 9), the facial feature data, iris data, and handwriting data are acquired. For example, the corresponding data is overwritten by the acquired data. Furthermore, the current date is overwritten in the previous visit date column. After the registrant information is updated (S214), the room notification process ends, the process returns to the main process shown in FIG. 7, and the process proceeds to step S31.

  On the other hand, when the “not applicable” button is selected instead of the selection button (S213: NO), the process of newly registering the registrant information as described above is performed based on the data acquired so far. Performed (S207). Thereafter, the indoor notification process ends, the process returns to the main process shown in FIG. 7, and the process proceeds to step S31.

  In this way, in the room notification process, in addition to displaying the visitor's image, the room responder is notified whether the visitor is a registered person, an unregistered person, or an unknown person. It is easy for the responder to determine whether or not the visitor is a person to be wary of. In particular, if it is determined in the authentication process using facial feature data or iris data that the visitor is a registered person or an unregistered person, the room responder displays the visitor information before the visitor reaches the handset 10. As a result, a more appropriate response is possible.

  If it is determined in step S211 that authentication by handwriting data has not been completed yet (S211: NO), the process returns to the main process shown in FIG. 7 and proceeds to step S2. In the face / iris authentication process (see FIG. 8) performed while passing through the face feature authentication range A1 or the iris authentication range A2 shown in FIG. 1, it is determined whether or not the visitor is a registrant. If the process returns to step S2 again through the indoor notification process (S20), the visitor approaches the position where he or she faces the handset 10 as it is.

  As shown in FIG. 2, the operation panel 114 of the child device 10 displays an instruction “Please touch if you want”, so that the visitor touches the operation panel 114 with a finger or a touch pen 115 according to the instruction. . That is, the visitor has reached the handwriting authentication range A3. Then, a signal indicating an input from the operation panel 114 is received by the parent device 20 (S2: YES), and handwriting authentication processing is performed (S15 and FIG. 9). In the handwriting authentication process, an authentication process using handwriting data is performed according to the data input from the operation panel 114. The handwriting authentication process will be described with reference to FIG.

  As shown in FIG. 9, first, a control signal and data for instructing a visitor to enter a name on the operation panel 114 are transmitted to the child device 10 (S151). Specifically, the display data of the name entry instruction screen (not shown) is read from the display screen storage area 222 of the flash ROM 220, and the voice data of the instruction voice is read from the notification voice storage area 223. 250 is transmitted to the slave unit 10 (S151). In the handset 10 that has received this, a name entry instruction screen is displayed on the operation panel 114. On the screen displayed at this time, for example, an input instruction for a name “Please write your name with a touch pen in the lower frame.”, An input field for a name, and an end button are displayed. Further, the speaker 112 outputs a voice “Please write your name with a touch pen in the lower frame”.

  Thereafter, the CPU 201 waits until input by the touch pen 115 is made on the operation panel 114 and the input acceptance is completed (S152: NO). Specifically, it waits until a signal indicating that the end button on the screen is selected is input. When the end button is selected and the input acceptance is completed (S152: YES), handwriting data of the name input by the visitor is acquired (S153). Specifically, time-series data obtained by sampling the input position coordinates and pressure (writing pressure) of the touch pen 115 input during input reception at regular time intervals are the handwriting data of the visitor. Is done.

  Subsequently, an authentication process using handwriting data with a visitor candidate is performed (S154). Specifically, the handwriting data of the visitor candidate is read from the registrant information storage area 221 (see FIG. 6) of the flash ROM 220. Then, the handwriting data of the visitor candidate and the handwriting data of the visitor are collated to obtain the dissimilarity DS. As described above, in step S106 or S107 of the face / iris authentication process (see FIG. 8), the visitor candidate ID is stored in the RAM 203, so that the handwriting data of the visitor candidate corresponds to this ID. The handwriting data to be read is read out.

  Further, similarly to the authentication process using the face feature data described above, the first threshold value DS1 for the dissimilarity when the person is surely identified and the second threshold value DS2 for the dissimilarity when the certain person is certain. And the recognition result is determined and stored in the RAM 203. When a plurality of visitor candidate IDs are stored in the RAM 203, handwriting data of the plurality of visitor candidates is sequentially read and collated. After the authentication process using handwriting data (S154), the handwriting authentication process ends, the process returns to the main process shown in FIG. 7, and the indoor notification process described above is performed (S20).

  As described above, in the room notification process, after the visitor information is notified to the room responder based on the authentication result based on the face feature data, the iris data, or the handwriting data (S20), in step S31, the master 20 It is determined whether or not a signal indicating that the response button 215 is depressed is detected. When the response button 215 is not pressed down (S31: NO), it is determined whether or not a predetermined time (for example, 1 minute) has elapsed (S32). For example, the elapsed time is measured by a timer that is started when the visitor information is notified by display on the operation panel 214 in the indoor notification process, and it may be determined whether or not the threshold value has been exceeded. While the predetermined time has not elapsed (S32: NO), the CPU 201 returns to the determination of whether or not the response button 215 has been pressed (S31) and repeats the process.

  If the predetermined time has elapsed (S32: YES), it is considered that there is no person in the room and no response is made, so the process returns to step S1 and is stored in the RAM 203 in the reset process for the next visitor. All the information is deleted.

  On the other hand, after the visitor information is notified to the room responder in the room notification process, the visitor presses the response button 215 after confirming the visitor image and the visitor information displayed on the operation panel 214. If it is lowered, the information is detected (S31: YES). In this case, the CPU 201 performs a call start process (S33). Specifically, the CPU 201 separately activates a program for controlling the operation of the parent device 20 related to a call with the child device 10. As a result, a communication path between the child device 10 and the parent device 20 is formed, and a call can be made between the visitor and the room responder. Then, the process returns to step S1, and all information stored in the RAM 203 is erased in the reset process for the next visitor.

  As described above, in the intercom system 1 according to the present embodiment, when a visitor who visits the house 7 approaches the child device 10, the child device 10 changes according to the distance between the visitor and the child device 10. Based on the image of the imaging range captured by the provided camera 113 and the input position and pressure on the operation panel 114, facial feature data, iris data, and handwriting data, which are personal information of the visitor, are acquired in order. Then, authentication processing is performed based on the acquired personal information. In other words, authentication processing is first performed using facial feature data, and as a result, if it is unclear whether or not the visitor is a registrant, then authentication processing is performed using iris data, and the visitor is still registered. If it is unclear whether or not the user is an authorized person, authentication processing based on handwriting data is further performed.

  Therefore, even when a plurality of types of personal information (face feature data, iris data, and handwriting data) are used, the plurality of types of personal information are arranged in an appropriate order according to the distance between the visitor and the child device 10. Authentication can be performed promptly. In particular, while the visitor approaches the handset 10, authentication is performed in an appropriate order according to the distance between the two, so that the room responder can check the visitor before the visitor reaches the handset 10. In some cases, information can be obtained and a more appropriate response is possible.

  For example, if it is determined that the visitor is a registered person or an unregistered person in the authentication process based on the facial feature data, no further authentication process is performed. Therefore, since it is not always necessary to acquire and use all of a plurality of types of personal information for recognition, it is possible to reduce the processing capacity required for the master unit 20 and the load on visitors. In addition, since the next authentication process is performed only when it is unknown whether or not the visitor is a registrant, compared to the method of ending the process only when it is determined that the visitor is a registrant, Processing can be completed more quickly.

  In the present embodiment, the base unit 20 of the intercom system 1 corresponds to the “personal authentication device” of the present invention. In steps S106 and S107 of the face / iris authentication process of FIG. 8 and step S154 of the handwriting authentication process of FIG. 9, respectively, according to the face feature data, iris data, and handwriting data according to the distance between the visitor and the handset 10. The CPU 201 of the parent device 20 that performs the authentication process corresponds to “a plurality of authentication means”. In steps S103 and S104 of the face / iris authentication process of FIG. 8 and step S153 of the handwriting authentication process of FIG. 9, the CPU 201 that acquires the face feature data, the iris data, and the handwriting data, respectively, Is equivalent to.

  The registrant information storage area 221 of the flash ROM 220 of the parent device 20 corresponds to “personal information storage means”, and the facial feature data, iris data, and handwriting data stored in the registrant information storage area 221 are “personal”. Corresponds to “information”. The CPU 201 that newly registers the acquired facial feature data, iris data, and handwriting data in the registrant information storage area 221 in step S207 of the indoor notification process in FIG. 10 corresponds to “personal information registration means”. The operation panel 214 of the parent device 20 corresponds to “notification means”, and the CPU 201 that displays the authentication result on the operation panel 214 in steps S202, S206, and S212 of the indoor notification processing in FIG. 10 is “notification control means”. It corresponds to. The camera 113 and the operation panel 114 of the child device 10 each correspond to “basic information acquisition means”, and the image captured by the camera 113 and the data input from the operation panel 114 correspond to “basic information”.

  It should be noted that the configuration and processing shown in the above-described embodiment are examples, and it goes without saying that various modifications are possible. For example, in the above-described embodiment, an individual authentication process using a plurality of types of personal information is performed by the interphone system 1 including the child device 10 and the parent device 20 which are separate devices. However, the same processing can be performed by one apparatus. Such another embodiment will be described with reference to FIGS. 11 and 12.

  FIG. 11 is a block diagram showing an electrical configuration of an admission management device 50 according to another embodiment. FIG. 12 is a flowchart of the main process of the admission management device 50. In the admission management device 50 shown in FIG. 11, the same components as those of the slave unit 10 and the master unit 20 of the interphone system 1 of the above-described embodiment are denoted by the same reference numerals. Further, in the flowchart shown in FIG. 12, the same step number is assigned to the same step as the main process (see FIG. 7) of the above-described embodiment.

  The entrance management device 50 shown in FIG. 11 is installed at the entrance of a building or room for security purposes, and only when a person who intends to enter the building or room is authenticated as a registrant who is permitted in advance. A device for unlocking an electric lock. As shown in FIG. 11, the admission management device 50 has the configurations of the slave unit 10 and the master unit 20 of the intercom system 1 described above.

  Specifically, the admission management device 50 is provided in the speaker 112, the camera 113, the operation panel 114, the human sensor 116, the infrared LED illumination 117, and the parent device 20 provided in the child device 10. A CPU 201, a ROM 202, a RAM 203, and a flash ROM 220 are provided. Since these configurations and functions are the same as those of the above-described embodiment, description thereof is omitted here. The entrance management device 50 is further connected with an electric lock 51 that electrically locks and unlocks the entrance door using a motor or the like.

  With reference to FIG. 12, the main process performed in the entrance management apparatus 50 is demonstrated. In the admission management device 50, as in the intercom system 1, authentication processing using facial feature data, iris data, and handwriting data is sequentially performed according to the distance between the visitor and the admission management device 50, and the visitor is a registrant. When it is authenticated that there is, the electric lock 51 is unlocked. The main process in FIG. 12 is partly in common with the main process (see FIG. 7) performed in the base unit 20 of the intercom system 1 described above, and only a different process will be briefly described.

  Specifically, as shown in FIG. 12, the processes of steps S1 to S5, step S10, and step S15 are the same as the main process (see FIG. 7) of the above-described embodiment. Then, the following processing is performed in place of the processing in steps S20 and S31 to S33 in FIG.

  First, after authentication processing using face feature data, iris data, and handwriting data is performed in step S10 or step S15, it is determined whether or not a visitor is specified as one of the registrants as a result of authentication. (S51). If the visitor is specified as a registrant (S51: YES), since the visitor is permitted to enter, the CPU 201 unlocks the electric lock 51 (S52), and then performs the process of step S1. Return to. On the other hand, if the result of the authentication indicates that the person is not a registered person but an unregistered person (S51: NO, S53: YES), the admission cannot be permitted, so the CPU 201 outputs an error sound from the speaker 112. (S54), the process returns to step S1.

  If it is unknown whether the user is a registered person (S53: NO), the CPU 201 determines whether or not all three types of authentication processing have been performed (S55). If it is not determined that the user is a registered person (S55: YES), the admission cannot be permitted, and an error sound is output from the speaker 112 (S54), and the process returns to step S1. If there is an authentication process that has not been performed yet (S55: NO), the process returns to step S2 and is repeated.

  Also in this embodiment, face feature data, iris data, and handwriting data, which are personal information of a visitor, are sequentially acquired according to the distance between the visitor and the entrance management device 50, as in the case of the intercom system 1. Then, an authentication process is performed based on the acquired personal information. Therefore, since multiple types of personal information can be used in an appropriate order according to the distance between the visitor and the entrance management device 50, authentication can be performed promptly. In particular, while the visitor approaches the entrance management device 50 near the entrance, authentication is performed in an appropriate order according to the distance between the two. Therefore, when the visitor is a registrant, authentication is performed when the visitor reaches the entrance. May have been completed. Therefore, the registrant does not take time for authentication at the entrance and can enter quickly. In this embodiment, the admission management device 50 corresponds to the “personal authentication device” of the present invention.

  Further, the intercom system 1 is not necessarily installed in a detached house as shown in FIG. For example, it may be installed in an apartment house such as an apartment, a company, or a building.

  In the above-described embodiment, facial feature data, iris data, and handwriting data are employed as a plurality of types of personal information used for personal authentication. However, other personal information may be employed. For example, as in the above-described embodiment, when different authentication processes are performed in the order according to the distance, the visitor touches and inputs the handset 10 or the operation panel 114 of the entrance management device 50 instead of the handwriting data. Data such as fingerprints, veins, palm prints, and personal identification numbers, which are personal information, may be employed.

  Further, when a plurality of types of personal information are used for personal authentication, it is not always necessary to perform different authentication processes according to the distance, and different authentication processes may be performed according to other environments where the person to be authenticated is placed. For example, different authentication processes may be performed according to brightness or noise level. For example, authentication can be performed with priority given to authentication processing using personal information that is less affected by brightness as the level of brightness decreases, such as at dusk. In such a case, the first threshold value of the dissimilarity when it is certain that the person is the person may be set lower than usual.

  In the above-described embodiment, as a result of authentication, only when it is unclear whether or not the visitor is a registrant, authentication processing using the following different personal information is performed, and it is determined that the visitor is an unregistered person. In the event of a failure, no further authentication processing is performed. However, even if it is determined that the visitor is an unregistered person, the next authentication process may be performed.

  In the above-described embodiment, the moving object in front of the child device 10 is detected by the human sensor 116, but the human sensor 116 is not necessarily provided in the child device 10. Instead, the camera 113 may always take an image of the imaging range and detect a moving object based on a change in the image.

  In the above-described embodiment, the master unit 20 includes the flash ROM 220, and the screen data and instruction voice data stored therein are transmitted to the slave unit 10, thereby performing display and voice output on the slave unit 10. Is called. However, the display screen, instruction screen data, and instruction voice data are not necessarily stored in the parent device 20, and may be stored in the child device 10 by providing a flash ROM. In this case, only an instruction for specifying data is transmitted from the parent device 20 to the child device 10, and the CPU 101 of the child device 10 performs display and audio output according to the instruction.

It is explanatory drawing which shows the relationship between the distance of the visitor 2 and the subunit | mobile_unit 10 of the intercom system 1, and the application range of various authentication processes. It is an external appearance front view of cordless handset 10. FIG. 3 is an external front view of master device 20. 1 is a block diagram showing an electrical configuration of an intercom system 1. FIG. It is explanatory drawing of the storage area which flash ROM220 has. 6 is an explanatory diagram showing an example of data stored in a registrant information storage area 221 of the flash ROM 220. FIG. 5 is a flowchart of main processing of the master unit 20. 8 is a flowchart of face / iris authentication processing executed during the main processing of FIG. 7. It is a flowchart of the handwriting authentication process performed during the main process of FIG. It is a flowchart of the indoor notification process performed during the main process of FIG. It is a block diagram which shows the electric constitution of the entrance management apparatus 50 which concerns on another embodiment. 4 is a flowchart of main processing of an admission management device 50.

Explanation of symbols

1 Intercom System 10 Slave 113 Camera 114 Operation Panel 20 Master 201 CPU
214 Operation Panel 50 Admission Management Device

Claims (7)

A personal authentication device that authenticates an individual using at least one of a plurality of types of personal information,
A plurality of authentication means for performing personal authentication using each of the plurality of types of personal information;
According to the environment where the person to be authenticated is currently placed, a person to be authenticated information acquisition means for acquiring any one of the plurality of types of personal information of the person to be authenticated as the person to be authenticated information,
Among the plurality of authentication means, the authentication means whose personal information used for authentication is the same type as the person-to-be-authenticated person information, Authenticating the person to be authenticated by checking the personal information of the same type as the person to be authenticated information stored in the personal information storage means for storing
When the authentication result by the authentication means cannot identify the person to be authenticated as any one of the plurality of persons,
The authenticated person information acquisition means newly acquires the authenticated person information corresponding to the environment,
Among the plurality of authentication means, authentication means in which personal information used for authentication is the same type as the authenticated person information newly acquired by the authenticated person information acquiring means is stored in the personal information storage means A personal authentication apparatus for newly authenticating a person to be authenticated by comparing the personal information of the same type as the newly acquired person to be authenticated with the person to be authenticated.   When the authentication result by the authentication means indicates that it is unknown whether or not the person to be authenticated corresponds to any of the plurality of persons, the person to be authenticated information acquisition means is responsive to the environment. The personal authentication device according to claim 1, wherein the person-to-be-authenticated person information is newly acquired.   When the authentication result by the authentication means indicates that the person to be authenticated does not correspond to any of the plurality of persons, the personal information storage means stores the person to be authenticated acquired by the person to be authenticated information acquisition means. The personal authentication apparatus according to claim 1, further comprising personal information registration means for registering certifier information. The environment is a distance between basic information acquisition means for acquiring basic information, which is information serving as a basis of the authenticated person information, from the authenticated person and the authenticated person,
2. The authenticated person information obtaining unit obtains, as the authenticated person information, personal information of a type corresponding to the distance from the basic information obtained by the basic information obtaining unit. The personal authentication device according to any one of?   The personal authentication program for functioning a computer as various processing means of the personal authentication apparatus in any one of Claims 1-4. An intercom system comprising a slave unit installed outdoors and a master unit connected to the slave unit and installed indoors,
The base unit is
The personal authentication device according to any one of claims 1 to 3,
Notification means for notifying information in the room;
An intercom system comprising: a notification control unit that controls the notification unit to notify a result of authentication by the authentication unit. The slave unit includes basic information acquisition means for acquiring basic information, which is information that is a basis of the authenticated person information,
The environment is a distance between the slave unit and the person to be authenticated,
7. The authenticated person information acquiring unit acquires, as the authenticated person information, personal information of a type corresponding to the distance from the basic information acquired by the basic information acquiring unit. The intercom system described in.

Images