JP2006303806A - Interphone system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To securely discriminate either an authentic visitor or a doubtful visitor. <P>SOLUTION: A proper identifier read from an ID tag 40 by an intercom subunit 10 installed outside a residence is authentication processed by a center apparatus 30 referring to a database 31. The authentication processing result is notified to a resident staying inside the residence, via an intercom mater unit 20 mounted inside the residence. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an interphone system that can check a visitor from the house without going out outdoors by calling through an interphone handset installed outside the house or an interphone master set installed in the house. The present invention relates to an intercom system that can identify a suspicious visitor by executing an authentication process using an ID (IDentification) tag.

  Residents inside the house talk to visitors outside the house through communication between the handset installed outside the house (outside the house), such as near the entrance of the house, and the parent machine installed inside the house (home). Interphone systems that can be widely used.

  Such an intercom system is a telephone system that is very convenient for the user because it can eliminate the annoyance of going to the entrance in the case of a business that needs to be done in a house. In particular, when a suspicious visitor comes, it is possible to refuse a reception on the spot, and to support a comfortable and safe living.

  However, in recent years, with the increasing number of malicious door-to-door sales and suspicious visitors, the response of visitors has become more sophisticated. There is an increasing number of situations where it is not possible to determine whether there is any.

  Therefore, the intercom system is equipped with a camera on the interphone handset side, and the visitor image captured by this camera is displayed on the monitor provided on the interphone base unit side, so that visitors who have visited the house Systems have also been devised and implemented that can be visually identified while inside.

  However, even when using an intercom system that can visually display a visitor in this way, for example, a suspicious visitor pretends to be a delivery company, wears a fake uniform, and puts a fake slip on the camera. There is a problem that it is possible to easily perform an impersonation act that confuses a resident in the house, such as taking an image.

  In addition, even if a visitor displays an identification card, etc., displayed on the camera, it is very difficult to determine whether this identification card is a legitimate certificate or a forged certificate. It is difficult to.

  In this way, an intercom system that can image a visitor has the advantage of visually presenting a visitor to a resident in the house, but in terms of safety against suspicious visitors It contains the problems described above.

  Therefore, an image of a legitimate visitor, for example, an image of a delivery person of a delivery company, and an image of an image of a person who is not a legitimate visitor, for example, a wanted person, are stored in the database in advance. A crime prevention system is disclosed in which only a legitimate visitor is handled by comparing with an image captured when a visitor visits, and a predetermined response process is performed as a suspicious person for other visitors. (See Patent Document 1).

Also, an intruder detection device that automatically detects an intruder who has entered a dwelling unit using an RFID (Radio Frequency IDentification) system is disclosed (see Patent Document 2).
JP 2004-013871 A JP-A-9-270011

  However, in the technique disclosed in Patent Document 1, since image data is used to determine the legitimacy of a visitor, the calculation process takes time, and the accuracy is not so high for authentication processing by image processing. There is a problem such as.

  In addition, it is impractical to prepare a database for holding a large amount of image data to be compared in each house, and when image data is stored in a database provided on a network, a comparison is made. There are a number of problems that the communication time required each time for processing becomes very long.

  Moreover, in the technique disclosed in Patent Document 2, whether or not to issue an RFID tag to be used for authentication processing to a visitor is left to an arbitrary judgment of a resident in the dwelling unit. There is a problem that it has not been solved at all to eliminate the suspicious person pretending to be a visitor.

  Therefore, the present invention has been devised to solve the above-described problems, and whether or not the visitor is a legitimate visitor while staying at home without performing a call with the visitor and an authentication process using an image. An object of the present invention is to provide an intercom system that can reliably determine whether a visitor is a suspicious visitor.

  In addition, in the case where there are further problems in addition to the problems described above, the best mode for carrying out the invention will be shown, and the solution technique will be appropriately shown.

  The present invention relates to an interphone slave unit installed outside the home, an interphone master unit installed in the home that responds to a call from the interphone slave unit and makes a call with the interphone slave unit, and a unique identifier. A database for storing an ID (IDentification) tag, a unique identifier of the ID tag assigned to a legitimate visitor, and related information related to the legitimate visitor in association with each other A center device, wherein the intercom handset includes a reading unit that reads the unique identifier from the ID tag, and the center device uses the unique identifier read by the reading unit, And the authentication processing means for authenticating the unique identifier, and the authentication processing means authenticates the unique identifier. The related information stored in association with the unique identifier is acquired from the database, and the authentication processing result and the related information are transmitted to the intercom master unit, and the authentication processing means A transmission unit that transmits an authentication process result to the interphone base unit when the unique identifier is not authenticated, and the interphone base unit transmits the authentication process result transmitted by the transmission unit, By having display means for displaying related information, the above-described problems are solved.

  The intercom system of the present invention performs authentication processing by the center device using the unique identifier acquired by the reading means of the interphone slave unit from the ID tag distributed in advance to a legitimate visitor, and legitimate visit Or a suspicious person who is not a legitimate visitor can be informed to a resident in the home via the intercom master unit.

  Therefore, in the intercom system of the present invention, it is possible to execute a rapid authentication process with a very inexpensive configuration that does not require a call with a visitor who has visited and does not require an authentication process using a captured image. It is possible to eliminate suspicious persons pretending to be legitimate visitors and to ensure the safety of residents living in the home equipped with the intercom system.

  In addition, a visitor's behavior is transmitted by transmitting, to the center device, a house ID that uniquely identifies the house where the interphone system or the interphone system given to the interphone master is installed, together with a unique identifier acquired from the ID tag. By managing as a history, it is possible to support the business management of business users who are properly registered in the intercom system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
First, the intercom system shown as the first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the intercom system shown as the first embodiment includes an interphone slave device 10, an interphone master device 20, a center device 30, and an ID tag 40.

  As shown in FIG. 2, when the interphone system is used in a general house, the interphone handset 10 is installed outside the house (outside the house), for example, in the vicinity of the door 60 that is the entrance of the house, The machine 20 is installed in the house (home). The visitor X can talk to the resident A in the house from the intercom slave device 10 via the interphone master device 20.

  The interphone slave unit 10 or the interphone master unit 20 is connected to a center device 30 managed by an operator operating the interphone system via a network such as the Internet, and the mutual data is transmitted to the interphone slave unit 10 or the interphone master unit 20 via the network. Can communicate.

  The intercom system shown as the first embodiment determines whether or not the visitor is a legitimate visitor by the authentication process of the ID tag 40 given to the visitor, and the determination result is a resident in the house. Can be notified.

  The ID tag 40 used in this intercom system is a non-contact information medium in an RFID (Radio Frequency IDentification) system, and has a unique identifier (unique identifier) for uniquely identifying the ID tag in a built-in IC (Integrated Circuit) memory. Hereinafter referred to as a unique identifier).

  The non-contact information medium used in the RFID system is roughly classified into a passive non-contact information medium and an active non-contact information medium due to a difference in an operation power acquisition method necessary for transmitting and receiving radio waves. The ID tag 40 used in the intercom system shown as the first embodiment may be a passive non-contact information medium or an active non-contact information medium.

  In an RFID system using a passive non-contact information medium, the non-contact information medium receives a radio wave transmitted from a reader / writer, obtains operating power from the received radio wave by electromagnetic induction, and uses this radio wave. Data communication is performed with the reader / writer.

  The passive non-contact information medium and the reader / writer each have an antenna coil for transmitting and receiving the radio wave. The induction electromagnetic field generated by the reader / writer side antenna coil causes the non-contact information medium side An induced electric power is generated in the antenna coil by the induced magnetic flux. An appropriate communication distance between the electromagnetic induction reader / writer and the non-contact information medium is approximately several centimeters to several tens of centimeters (about 1 m or less). Of course, it is also good to adopt an electromagnetic coupling method by mutual induction. In this case, the communication distance is about several mm to several cm.

  In an RFID system using an active non-contact information medium, the non-contact information medium includes a battery as a power source, and data communication is performed with the reader / writer using power supplied from the battery. That is, the active non-contact information medium can actively communicate with the reader / writer by itself.

  Active type non-contact information media have a built-in battery, so that the wireless communication distance to the reader / writer is several meters to several tens of meters. The feature is that wireless communication can be executed. A battery used as a power source for an active non-contact information medium is a battery that is very small (thin) and has a long life.

  Such an ID tag 40 is provided to the operator who operates the interphone system, for each legitimate trader registered in advance to use the interphone system service, for example, each delivery member of a delivery trader who delivers a package, or a security company. Will be distributed to security guards belonging to. The ID tag 40 is processed so that it can be easily worn by, for example, a key holder or a badge so that the delivery person or the guard can always hold it.

  As described above, when the ID tag 40 is distributed to a delivery person of a delivery company, a security company, or the like, a delivery person individual is uniquely specified as a unique identifier in a memory (not shown) of the ID tag 40. A personal ID that can be used, and a trader ID that uniquely identifies a delivery trader to which a delivery person and a guard belong, respectively.

  In addition, the person who gives the ID tag 40 is not only a delivery person and a security guard as described above, but also a person who engages in a predetermined business such as visiting a house in a trader who uses the service by the interphone system. Any person can be used.

  In the following description, a case where a delivery company is selected as a trader who is assumed to make maximum use of the service provided by the intercom system, and an ID tag 40 is assigned to a delivery person belonging to the delivery trader. An example will be described.

  Next, a detailed configuration of the intercom system shown as the first embodiment will be described with reference to FIG.

  The intercom handset 10 includes a call button 5, an interphone unit 11, an ID reading unit 12, a communication unit 13, and a control unit 14.

  The interphone unit 11 includes an interphone unit 21 of the interphone base unit 20, a voice input microphone for voice conversation, and a voice output speaker.

  The intercom unit 11 calls the interphone base unit 20 under the control of the control unit 14 in response to pressing of the call button 5 provided on the interphone handset 10, and the communication unit 13 and the communication unit 22 of the interphone base unit 20. It is possible to make a call with the intercom base unit 20 via the.

  When the ID tag 40 is an active non-contact information medium with a built-in operation power supply, the ID reading unit 12 receives radio waves transmitted from the ID tag 40 regularly or irregularly, The unique identifier superimposed on the radio wave can be acquired.

  In addition, the ID reading unit 12 may periodically perform the ID tag 40 with respect to the ID tag 40 when the ID tag 40 is a passive non-contact information medium that secures the operation power by electromagnetic induction without incorporating the operation power. Alternatively, the power is supplied by sending an inquiry radio wave irregularly. The ID reading unit 12 can acquire the unique identifier superimposed on the response radio wave by receiving the response radio wave transmitted from the ID tag 40 that responds to the interrogation radio wave.

  The unique identifier read by the ID reading unit 12 is output to the control unit 14, and is output to the communication unit 22 of the interphone master device 20 via the control unit 14 and the communication unit 13.

  The communication unit 13 is a communication interface for voice communication and data communication via the communication unit 22 of the interphone master unit 20. The communication unit 13 performs voice communication and data communication via the communication unit 22 of the interphone base unit 20 by a predetermined communication method.

  The control unit 14 is a control unit that comprehensively controls the intercom slave device 10. The control unit 14 controls a call with the interphone master unit 20, transmission processing of the unique identifier read by the ID reading unit 12, and the like.

  The intercom base unit 20 includes an interphone unit 21, a communication unit 22, a display unit 23, a center communication unit 24, a recording unit 25, and a control unit 26.

  The interphone unit 21 includes the interphone unit 11 of the interphone slave unit 10 described above, a voice input microphone for performing a voice call, and a voice output speaker.

  The intercom unit 21 sounds a ringing bell according to the control of the control unit 26 in response to the pressing of the call button 5 of the interphone handset 10, and notifies the resident in the house that a visitor has come. The resident who hears the news presses a call response button (not shown) or picks up a receiver (not shown) to start a call with the visitor.

  The communication unit 22 is a communication interface for voice communication and data communication via the communication unit 13 of the interphone slave unit 10. The communication unit 22 performs voice communication and data communication via the communication unit 13 of the interphone slave unit 10 by a predetermined communication method.

  The display unit 23 is, for example, a thin liquid crystal display that displays a menu screen for controlling the intercom base unit 20 or various setting screens under the control of the control unit 26. The display unit 23 displays various data such as data transmitted from the intercom slave device 10 and visitor authentication processing results transmitted from the center device 30 via the center communication unit 24.

  Further, the display unit 23 may be a touch panel or the like, and may also serve as an input interface of the interphone master unit 20.

  The center communication unit 24 is a communication interface for data communication with the center device 30 connected via a network.

  For example, the center communication unit 24 transmits the unique identifier of the ID tag 40 read by the ID reading unit 12 of the intercom slave device 10 to the center device 30 under the control of the control unit 26. The center communication unit 24 receives a visitor authentication processing result transmitted from the center apparatus 30.

  The center communication unit 24 that performs data communication with the center device 30 may be provided in the interphone slave unit 10 instead of the interphone master unit 20. In this case, the unique identifier of the ID tag 40 read by the ID reading unit 12 is directly transmitted from the intercom slave device 10 to the center device 30.

  In the following description, it is assumed that the center communication unit 24 is provided in the interphone master unit 20.

  When the unique identifier is transmitted from the intercom slave device 10, the recording unit 25 records the received unique identifier and the reception time.

  In addition, the recording unit 25 records the personal ID of a delivery person who is likely to perform delivery work, acquired in advance from the center apparatus 30 based on the delivery area. The personal ID recorded in the recording unit 25 is notified from the delivery person to the center device 30 when the delivery person loses the ID tag 40 by theft or loss. The center device 30 is updated as needed.

  As a result, when the interphone master unit 20 transmits the vendor ID and the personal ID, which are unique identifiers, from the interphone slave unit 10, the visitor can unfairly perform the authentication without causing the center device 30 to perform an authentication process. The resident can be informed that the acquired ID tag 40 is held. In addition, when it is confirmed that the ID tag 40 that has been illegally acquired in this way is used, the center device 30 is immediately notified.

  The recording unit 25 may be provided not in the interphone master unit 20 but in the interphone slave unit 10.

  The control unit 26 is a control unit that comprehensively controls the intercom base unit 20. The control unit 26 performs a call and data communication with the interphone unit 11 of the interphone handset 10, data communication with the center device 30, display control processing via the display unit 23 for the received data, and the like.

  The center device 30 is a management unit that is connected to each interphone master unit 20 provided in a house or the like via a network such as the Internet and manages the entire networked interphone system. The center device 30 is managed by an operator who operates the intercom system.

  When the center communication unit 24 described above is provided in the interphone slave unit 10, the center device 30 is connected to the interphone slave unit 10.

  By the way, for users who use the interphone system, the interphone slave unit 10 and the interphone master unit 20 are installed in a house or the like, so that the user can use the interphone system directly, and the customer can trust and feel at ease, like a delivery company. There are business users who use an intercom system for the purpose of improving the feeling and promoting business management on the management side.

  The center device 30 includes a database 31 that stores management data for managing these general users and business users.

  In the database 31, a trader ID that uniquely identifies a trader registered as a business user who uses the interphone system, for example, a delivery trader, and an individual belonging to the trader, for example, a delivery person belonging to the delivery trader, are uniquely identified. Are stored in association with relevant information related to the visitor, such as information indicating the trader name, information indicating the name of the deliverer, and the like.

  Further, the database 31 shows a house ID (to be described later) given to the interphone slave unit 10 or the interphone master unit 20 and the name of the resident who installs the interphone master unit 20 in order to manage general users. Information is stored in association with each other.

  Below, house ID is demonstrated. The interphone slave unit 10 or the interphone master unit 20 stores unique identification information for uniquely specifying the house where the interphone slave unit 10 or the interphone master unit 20 is installed. This unique identification information is a house ID, and is mainly information used by business users to promote business management.

  In a business such as a delivery company that visits a house and delivers a package, it is necessary to manage the whereabouts of the package to be delivered. In the past, a delivery person who delivered a package directly confirmed that the package was delivered to the customer by recording it directly after delivering the package or by receiving a receipt on the slip. In addition, in order to further ensure the delivery result, the delivery is performed by the vehicle on which the delivery person is boarded, the GPS (Global Positioning System) attached to the terminal device held by the delivery person, or the cell ID of the mobile phone. The location information of the workers was acquired and the packages to be delivered were managed.

  However, the position information acquired by GPS or cell ID is uncertain in accuracy and is not related to the delivery record, so it is impossible to confirm whether the package has actually been delivered. was there.

  Therefore, by using this house ID, it is possible to centrally manage which house the delivery person holding the ID tag 40 has visited, so that business management of business users can be supported.

  The house ID is read by the ID reading unit 12 of the intercom handset 10 and is sent to the center apparatus 30 via the interphone base unit 20 for authentication processing, along with the vendor ID, personal ID, etc. Transmitted to the device 30.

  The house ID stored in the intercom slave 10 or the interphone master 20 is transmitted at the same time when the dealer ID and the personal ID read by the ID reader 12 from the ID tag 40 are transmitted to the center device 30.

  When the center apparatus 30 receives the trader ID, the personal ID, and the house ID, the center apparatus 30 records these IDs in the database 31 together with the received time. Thus, when it records in the database 31, it will become a delivery person's action history, and a business user grasps which delivery person visited which house when and by referring to the recorded ID and time information. can do. That is, an action history database describing the delivery person's action history is constructed in the database 31 by the center apparatus 30.

  At this time, if a sensor or the like for detecting that the door 60 of the house is opened is provided in the intercom system, and the signal detected by the sensor is transmitted to the center device 30 together with the house ID, the delivery item is sent to the resident. It is possible to centrally manage the exact delivery status, such as whether it was delivered or whether the resident was absent.

  In addition, the receipt record of the delivery item is transmitted to the center device 30 from, for example, a terminal device held by the deliverer and reflected in the behavior history database, so that the resident can deliver the delivery item to the resident. The delivery status such as absence can be centrally managed in the same way.

(ID tag 40: active type)
Next, the processing operation corresponding to the active ID tag 40 in the intercom system shown as the first embodiment will be described using the flowcharts shown in FIGS.

  For the sake of explanation, it is assumed that the intercom system is installed in a house as shown in FIG. 2, and a resident A exists in the house.

  First, the processing operation of the intercom handset 10 will be described with reference to the flowchart shown in FIG.

  In step S <b> 1, the control unit 14 of the intercom handset 10 determines whether the call button 5 of the intercom handset 10 has been pressed by the visitor X. When the call button 5 is pressed, the control unit 14 advances the process to step S2. When the call button 5 is not pressed, the control unit 14 repeats step S1 and continues the call button 5 pressing standby state.

  In step S2, the fact that the visitor X has pressed the call button 5 is a position where the ID tag 40 held by the visitor X and the ID reading unit 12 of the intercom handset 10 can communicate with each other. The ID reading unit 12 receives radio waves transmitted from the active ID tag 40 regularly or irregularly, and reads data included in the received radio waves. The ID reading unit 12 reads out the vendor ID, which is a unique identifier, and a personal ID, if they are included.

  The control unit 14 transmits the data read by the ID reading unit 12 to the interphone master device 20 via the communication unit 13.

  After the step S2, the process proceeds to the process step by the interphone master 20 shown in FIG. 3B, and a predetermined authentication process is executed.

  Only when the processing by the interphone master 20 is completed and there is a response from the resident A via the interphone master 20, the visitor X can respond to the resident A's response in step S3.

  Next, the processing operation of the intercom base unit 20 will be described using the flowchart shown in FIG.

  In step S <b> 11, the control unit 26 of the intercom master device 20 determines whether data transmitted from the interphone slave device 10 is received via the communication unit 22. When the data transmitted from the intercom handset 10 is received, the control unit 26 advances the process to step S12. When the data is not received, the control unit 26 repeats the process of step S11 and sets the data reception standby state. continue.

  In step S <b> 12, the control unit 26 determines whether the data received by the communication unit 22 includes a vendor ID that is a unique identifier of the ID tag 40 and a personal ID.

  If the received data includes a vendor ID, which is a unique identifier, and a personal ID, the control unit 26 proceeds to step S13. If not, the control unit 26 proceeds to step S18. And proceed.

  In step S <b> 13, the control unit 26 transmits the trader ID, which is the acquired unique identifier, and the personal ID to the center device 30 via the center communication unit 24, and requests authentication processing of the trader ID and personal ID. .

  At this time, the control unit 26 may transmit the house ID held by the interphone slave device 10 or the interphone master device 20 to the center device 30 together with the trader ID and the personal ID. The center device 30 records these IDs in the database 31 to construct an action history database in which the action history of the deliverer is recorded. Thereby, since the delivery history of the deliverer can be provided to the delivery company that is the business user, the delivery company can perform the business management.

  In step S <b> 14, the center apparatus 30 refers to the database 31 and performs an authentication process for determining whether the transmitted unique identifier, which is a trader ID and a personal ID, is registered in the database 31.

  The center apparatus 30 advances the process to step S15 when the trader ID and the personal ID, which are unique identifiers, are registered valid IDs, and proceeds to step S21 when the ID is not valid. Proceed to.

  In step S <b> 15, the center apparatus 30 records the vendor ID, which is the authenticated unique identifier, and the personal ID together with the current time. This is a measure in the case where the resident A is absent when the visitor X visits. The resident A accesses the center device 30 and returns the information recorded in the database 31 when returning home. By acquiring and displaying on the display unit 23, it is possible to know that the visitor X who is a legitimate visitor has visited and the time of visit.

  In step S16, the center device 30 relates to a visitor such as information indicating a trader name stored in the database 31 in association with a unique identifier and a personal ID, and information indicating the name of the deliverer. The acquired related information is acquired and transmitted to the intercom base unit 20 via the center communication unit 24 together with the authentication processing result.

  The control unit 26 of the intercom master unit 20 displays the received authentication processing result, information indicating the trader name, and information indicating the name of the delivery person on the display unit 23, and the visitor X is a legitimate visitor. Inform you.

  In step S <b> 17, the resident A in the house responds to the call of the visitor X with reference to the information displayed on the display unit 23 of the intercom master device 20.

  In step S18, the center device 30 records the fact together with the current time when the data transmitted from the intercom handset 10 does not include the vendor ID and personal ID, which are unique identifiers. To do. This is a measure for the case where the resident A is absent when the visitor X visits. The resident A accesses the center device 30 and returns to the information recorded in the database 31 when he / she comes home. Can be obtained and displayed on the display unit 23, so that the visitor X who is a visitor who does not have the unique identifier can know the visit and the visit time.

  In step S <b> 19, the center device 30 transmits the authentication processing result determined that the visitor X does not have the unique ID of the trader ID and the personal ID to the interphone master unit 20 via the center communication unit 24. To do.

  The control unit 26 of the intercom base unit 20 displays the received authentication processing result on the display unit 23 to notify that the visitor X is not a valid visitor.

  The process of step S19 can be arbitrarily set by the resident A, and when a visitor who does not have a trader ID and a personal ID visits, it is ignored and no notification is given at all. You can also.

  In step S20, the resident A in the house responds to the call of the visitor X with reference to the information displayed on the display unit 23 of the intercom master unit 20.

  In step S <b> 21, the center device 30 records the fact together with the current time in response to the fact that the vendor ID as the unique identifier and the personal ID are not authenticated as valid IDs. This is a measure for the case where the resident A is absent when the visitor X visits. The resident A accesses the center device 30 and returns to the information recorded in the database 31 when he / she comes home. Can be obtained and displayed on the display unit 23, so that the visitor X who is an unauthenticated visitor can know the visit and the time of the visit.

  In this way, the intercom system shown as the first embodiment of the present invention has the unique ID acquired by the ID reading unit 12 of the intercom handset 10 from the ID tag 40 distributed in advance to a legitimate visitor. Can be transmitted to the center apparatus 30, and by the authentication process by the center apparatus 30, it can be determined whether it is a legitimate visitor or a suspicious person who is not a legitimate visitor.

  Therefore, this intercom system does not require a call with a visitor who has visited, and does not require an authentication process using a captured image. By performing a quick authentication process with an extremely inexpensive configuration, for example, the world Therefore, it is possible to discriminate an unfair visitor who calls the name of a business institution or a public institution, so that it is possible to ensure the safety of residents living in a house equipped with an intercom system.

  In addition, the center device 30 includes the house ID for uniquely identifying the house in which the interphone system provided to the interphone slave unit 10 or the interphone master unit 20 is installed, together with the vendor ID and personal ID acquired from the ID tag 40. It is possible to manage the action history of a delivery person belonging to a delivery company who has visited a house and a security person belonging to a security company.

(ID tag 40: passive type)
Next, processing operations corresponding to the passive ID tag 40 in the intercom system shown as the first embodiment will be described using the flowchart shown in FIG.

  When the passive ID tag 40 is used, the processing operation of the interphone master unit 20 is the same as the processing operation described with reference to the flowchart of FIG. Only the processing operation will be described.

  In step S21, the control unit 14 of the intercom handset 10 determines whether the call button 5 of the intercom handset 10 has been pressed by the visitor X. If the call button 5 is pressed, the control unit 14 advances the process to step S22. If the call button 5 is not pressed, the control unit 14 repeats step S21 and continues the call button 5 pressing standby state.

  In step S <b> 22, when the visitor X presses the call button 5, the control unit 14 controls the ID reading unit 12 to transmit a question radio wave to the ID tag 40. The fact that the visitor X has pressed the call button 5 is a position where the ID tag 40 held by the visitor X and the ID reading unit 12 of the interphone slave unit 10 can communicate with each other. The interrogation radio wave transmitted from is received by the ID tag 40.

  The ID tag 40 receives the interrogation radio wave, obtains operating power, reads the vendor ID and personal ID, which are unique identifiers stored in the memory, and superimposes the vendor ID and personal ID. Send a response radio wave.

  In step S23, the ID reading unit 12 receives a response radio wave transmitted from the ID tag 40, and reads data included in the received radio wave. The ID reading unit 12 reads the vendor ID, which is a unique identifier, and a personal ID, if they are included.

  The control unit 14 transmits the data read by the ID reading unit 12 to the interphone master device 20 via the communication unit 13.

  After the step S2, the process proceeds to the process step by the interphone master 20 shown in FIG. 3B, and a predetermined authentication process is executed.

  Only when the process by the interphone master 20 is completed and there is a response from the resident A via the interphone master 20, the visitor X can respond to the resident A's response in step S24.

  Thus, in the intercom system shown as the first embodiment of the present invention, when the ID tag 40 is a passive type, the visitor X only presses the call button 5 according to the control of the control unit 14. Since the interrogation signal is transmitted from the ID reading unit 12, it is not necessary to transmit the interrogation signal in a meaningless manner when there is no visitor, so that the power consumption can be greatly reduced.

  Further, in the interphone system shown as the first embodiment of the present invention, the ID tag 40 to be given to a legitimate visitor is not limited to business users who use the interphone system, but also the interphone slave unit 10 of the interphone system, the interphone In the case of a resident living in the vicinity of the house to which the master unit 20 is attached or an apartment house, if it is distributed to a resident living in the same apartment house, it becomes a filter when presented to the display unit 23 as a suspicious person. Can perform quick crime countermeasures.

  In particular, in an apartment house or the like, since the same intercom system can be installed in all the dwelling units, a more comprehensive security measure can be realized.

[Second Embodiment]
Subsequently, an intercom system shown as a second embodiment of the present invention will be described with reference to FIGS.

  The interphone system shown as the second embodiment has a configuration in which a human body detection sensor unit 15 is added to the interphone slave unit 10 of the interphone system shown as the first embodiment described with reference to FIG. The ID tag 40 used in the intercom system shown as the second embodiment is a passive non-contact information medium, and is held by the visitor X as shown in FIG.

  As described above, the interphone system shown as the second embodiment in FIGS. 5 and 6 is the same as the interphone system shown as the first embodiment except that the human body detection sensor unit 15 is added to the interphone slave unit 10. Since they are the same, overlapping functional units are denoted by the same reference numerals and description thereof is omitted.

  The human body detection sensor unit 15 newly added to the intercom handset 10 senses a human body by detecting a human body by detecting infrared rays emitted from the human body, or detecting a movement of the human body, for example. A sensor or the like, and a signal detected from the sensor is output to the control unit 14 as a detection signal.

  The human body detection range of the human body detection sensor unit 15 is approximately the same as or slightly wider than the communication range between the passive ID tag 40 and the ID reading unit 12.

  When the detection signal is output from the human body detection sensor unit 15, the control unit 14 indicates that a human body exists within the human body detection range of the human body detection sensor unit 15, that is, within a predetermined range near the interphone slave unit 10. It determines and transmits a question signal to the ID tag 40 which is a passive non-contact information medium.

  As shown in FIG. 5, the human body detection sensor unit 15 may be provided as a separate unit from the interphone slave unit 10 in addition to being configured in the interphone slave unit 10. In this case, the control by the control unit 14 is exactly the same as the case where the interphone slave unit 10 is configured. However, since the degree of freedom of the installation position of the human body detection sensor unit 15 increases, the timing for starting the authentication process Can be adjusted.

  Next, the processing operation of the intercom handset 10 will be described using the flowchart shown in FIG. When the passive ID tag 40 is used, the processing operation of the interphone master unit 20 is the same as the processing operation described with reference to the flowchart of FIG. Only the processing operation will be described.

  In step S31, the control unit 14 of the intercom handset 10 determines whether a human body is detected by the human body detection sensor unit 15 and a detection signal is output. If the human body is detected by the human body detection sensor unit 15 and the detection signal is output, the control unit 14 proceeds to step S32. If the human body is not detected and the detection signal is not output, step S31 is performed. The above process is repeated and the detection signal reception standby state is continued.

  In step S <b> 32, the control unit 14 controls the ID reading unit 12 in response to the detection signal output from the human body detection sensor unit 15, and sends an interrogation radio wave to the ID tag 40 that is a passive non-contact information medium. To send.

  As described above, the human body detection range of the human body detection sensor unit 15 is the same as or slightly wider than the communication range between the passive ID tag 40 and the ID reading unit 12. The fact that the detection signal is output from the unit 15 means that the ID tag 40 held by the visitor X and the ID reading unit 12 of the intercom slave device 10 are in a position where they can almost communicate with each other.

  Therefore, when the interrogation radio wave is transmitted from the ID reading unit 12 to the ID tag 40 at this timing, the ID tag, which is a passive non-contact information medium, acquires the operating power by receiving the interrogation radio wave, The vendor ID and personal ID, which are unique identifiers stored in, are read out, and a response radio wave on which the vendor ID and personal ID are superimposed is transmitted.

  In step S33, the ID reading unit 12 receives the response radio wave transmitted from the ID tag 40 and reads data included in the received response radio wave. The ID reading unit 12 reads the vendor ID, which is a unique identifier, and a personal ID, if they are included.

  The control unit 14 transmits the data read by the ID reading unit 12 to the interphone master device 20 via the communication unit 13.

  After the step S33, the process proceeds to a process step by the interphone master 20 shown in FIG. 3B, and a predetermined authentication process is executed.

  Only when the process by the interphone master 20 is completed and there is a response from the resident A via the interphone master 20, the visitor X can respond to the resident A's response in step S34.

  As described above, in the interphone system in which the ID tag 40 is a passive non-contact information medium and the intercom slave device 10 includes the human body detection sensor unit 15, the visitor X approaches the interphone slave device 10 and the human body detection sensor unit. When the human body is detected at 15, the interrogation radio wave is transmitted from the ID reading unit 12 according to the control of the control unit 14, so that it is not necessary to transmit the question signal meaninglessly when there is no visitor. Therefore, power consumption can be greatly reduced.

  Moreover, in the intercom system shown as the first embodiment described above, the interrogation radio wave is transmitted by pressing the call button 5, so that the power consumption can be similarly reduced. In the intercom system shown as the second embodiment, the process of transmitting the interrogation radio wave is automated, and if the human body detection range of the human body detection sensor unit 15 is appropriately adjusted, before the call button 5 is pressed, Since the interrogation signal can be transmitted, there is an advantage that the authentication process can be executed quickly.

  Further, by providing the intercom handset 10 with the human body detection sensor unit 15, even when a visitor who does not hold the ID tag 40 visits, it can be detected.

[Third Embodiment]
Next, the intercom system shown as the third embodiment of the present invention will be described with reference to FIG.

  The interphone system shown as the third embodiment has a configuration in which the camera unit 16 is added to the interphone slave unit 10 of the interphone system shown as the second embodiment described with reference to FIG. Further, the ID tag 40 used in the intercom system shown as the third embodiment may be an active non-contact information medium or a passive non-contact information medium.

  As described above, the interphone system shown as the third embodiment shown in FIG. 8 has a configuration in which the camera unit 16 is added to the interphone slave unit 10 and the active ID tag 40 is added as the corresponding ID tag 40. Since it is the same as the intercom system shown as the second embodiment, the same reference numerals are given to the overlapping functional units, and description thereof is omitted.

  The camera unit 16 newly added to the intercom slave device 10 is, for example, a CCD (Charge Coupled Devices) camera for imaging a human body existing in the vicinity of the door 60 and capable of capturing a small and high-quality image. Etc. The image captured by the camera unit 16 may be a moving image or a still image captured intermittently at a predetermined time interval.

  The camera unit 16 detects the human body by the human body detection sensor unit 15 and controls the control unit 14 that has received the detection signal, or controls the control unit 14 in response to pressing of the call button 5 of the intercom handset 10. In response, imaging is started.

  The image captured by the camera unit 16 is transmitted to the intercom base unit 20 via the communication unit 13 and the communication unit 22 of the intercom base unit 20, and is recorded in the recording unit 25, and the authentication processing result is displayed on the display unit 23. It is displayed at the same time when it is displayed, and visually supports visitor identification. When the recording unit 25 is provided in the interphone slave unit 10, an image captured by the camera unit 16 is recorded in the recording unit 25 of the interphone slave unit 10.

  The image captured by the camera unit 16 is recorded in the recording unit 25 regardless of the authentication processing result of the unique identifier of the ID tag 40 by the center device 30. Thereby, when a visitor visits and a resident is absent, what kind of person visited by browsing the image recorded on the recording part 25 via the display part 23 after going home. Can know.

  In particular, a visitor who has not been authenticated by the center device 30, a visitor who holds an ID tag 40 that may have been invalidated or obtained illegally, and a visit that does not hold an ID tag 40 at all Since the person's image is also recorded in the recording unit 25, information that is a clue to the criminal investigation can be automatically acquired.

  At this time, the ID tag 40 given to a legitimate visitor is not only a business user who uses the interphone system, but also a resident who lives in the vicinity of the house to which the interphone slave unit 10 and the interphone master unit 20 of the interphone system are attached, In the case of an apartment house, if distributed to residents living in the same apartment house, it becomes a filter for selecting images recorded in the recording unit 25 as a suspicious person, and a more reliable and prompt crime countermeasure is executed. Can do.

  In particular, in an apartment house or the like, since the same intercom system can be installed in all the dwelling units, a more comprehensive security measure can be realized.

  As shown in FIG. 8, the camera unit 16 may be provided as a separate unit from the interphone slave unit 10 in addition to being configured in the interphone slave unit 10. In this case, the control by the control unit 14 is exactly the same as the case where the interphone slave unit 10 is configured. However, since the degree of freedom of the installation position of the camera unit 16 is widened, the visitor is imaged from the optimum angle. can do.

  It is more effective to mount both a CCD camera with high sensitivity in the infrared region and near-infrared LED (Light Emitting Diode) illumination as the camera unit 16 so as to capture a good image even at night.

  Subsequently, in the intercom system shown as the third embodiment using the flowcharts shown in FIGS. 9A and 9B, processing operations corresponding to the active ID tag 40 and the passive ID tag 40 are described. Explain.

  For the sake of explanation, it is assumed that the intercom system is installed in a house as shown in FIG. 6, and a resident A exists in the house.

  The processing operation when using the passive type ID tag 40 and the processing operation when using the active type ID tag 40 are different from each other only by two steps in the processing operation of the interphone slave unit 10, and therefore FIG. A description will be given simultaneously in the flowchart shown in a). Moreover, when there is no notice of active type and passive type in the ID tag 40, it demonstrates as both performing the same processing operation.

  First, the processing operation of the intercom handset 10 will be described using the flowchart shown in FIG.

  In step S41, the control unit 14 of the intercom slave device 10 determines whether or not a human body is detected by the human body detection sensor unit 15 and a detection signal is output. If the human body is detected by the human body detection sensor unit 15 and the detection signal is output, the control unit 14 proceeds to step S42. If the human body is not detected and the detection signal is not output, step S41 is performed. This process is repeated to continue the detection signal reception standby state.

  In step S <b> 42, the control unit 14 controls the camera unit 16 in response to the detection of a human body by the human body detection sensor unit 15 and outputs a detection signal, and images the visitor X existing in the vicinity of the door 60. Start. The captured image is transmitted to the intercom base unit 20 via the communication unit 13 and the communication unit 22 and recorded in the recording unit 25.

  The next step S43a is a step that is increased when the ID tag 40 is a passive non-contact information medium, and is a step that is omitted when the ID tag 40 is an active non-contact information medium. is there.

  In step S43a, the control unit 14 controls the ID reading unit 12 in response to the detection signal output from the human body detection sensor unit 15, and sends an interrogation radio wave to the ID tag 40, which is a passive non-contact information medium. To send.

  As described above, the human body detection range of the human body detection sensor unit 15 is the same as or slightly wider than the communication range between the passive ID tag 40 and the ID reading unit 12. The fact that the detection signal is output from the unit 15 means that the ID tag 40 held by the visitor X and the ID reading unit 12 of the intercom slave device 10 are in a position where they can almost communicate with each other.

  Therefore, when the interrogation radio wave is transmitted from the ID reading unit 12 to the ID tag 40 at this timing, the ID tag, which is a passive non-contact information medium, acquires the operating power by receiving the interrogation radio wave, The vendor ID and personal ID, which are unique identifiers stored in, are read out, and a response radio wave on which the vendor ID and personal ID are superimposed is transmitted.

  The processing content of step S43 differs depending on the active ID tag 40 and the passive ID tag 40.

(In case of active ID tag 40)
The ID reading unit 12 receives radio waves transmitted from the active ID tag 40 regularly or irregularly, and reads data included in the received radio waves. The ID reading unit 12 reads out the vendor ID, which is a unique identifier, and a personal ID, if they are included.

  The control unit 14 transmits the data read by the ID reading unit 12 to the interphone master device 20 via the communication unit 13.

(In the case of passive ID tag 40)
The ID reading unit 12 receives a response radio wave transmitted from the passive ID tag 40 and reads data included in the received response radio wave. The ID reading unit 12 reads the vendor ID, which is a unique identifier, and a personal ID, if they are included.

  The control unit 14 transmits the data read by the ID reading unit 12 to the interphone master device 20 via the communication unit 13.

  After the process of step S43, the process proceeds to a process process by the interphone master 20 and the center device 30 shown in FIG. 9B, and a predetermined authentication process is executed.

  In step S44, the visitor presses the call button 5 of the intercom handset 10. When the call button 5 is pressed, the intercom master unit 20 is notified of a ringing sound for calling the resident A, and the authentication processing result by the center device 30 is displayed via the display unit 23.

  Then, the visitor X can respond to the resident A's response in step S45 only when the process by the interphone master 20 is completed and there is a response from the resident A via the interphone master 20. it can.

  In the flowchart shown in FIG. 9A, the imaging start timing of the camera unit 16 is the timing at which the presence of the human body is detected by the human body detection sensor unit 15, but the call button 5 of the interphone slave unit 10 is pressed. Accordingly, imaging may be started. In other words. The process of step S42 may be performed after step S44.

  Next, the processing operation of the intercom base unit 20 will be described using the flowchart shown in FIG.

  In step S <b> 51, the control unit 26 of the intercom master device 20 determines whether data transmitted from the interphone slave device 10 is received via the communication unit 22. When the data transmitted from the intercom handset 10 is received, the control unit 26 advances the process to step S52. If the data is not received, the control unit 26 repeats the process of step S51 and sets the data reception standby state. continue.

  In step S <b> 52, the control unit 26 determines whether the data received by the communication unit 22 includes a vendor ID that is a unique identifier of the ID tag 40 and a personal ID.

  If the received data includes a vendor ID that is a unique identifier and a personal ID, the control unit 26 advances the process to step S53. If not, the control unit 26 advances the process to step S58. And proceed.

  In step S <b> 53, the control unit 26 transmits the trader ID and personal ID, which are acquired unique identifiers, to the center apparatus 30 via the center communication unit 24, and requests authentication processing of the trader ID and personal ID. .

  At this time, the control unit 26 may transmit the house ID held by the interphone slave device 10 or the interphone master device 20 to the center device 30 together with the trader ID and the personal ID. The center device 30 records these IDs in the database 31 to construct an action history database in which the action history of the deliverer is recorded. Thereby, since the delivery history of the deliverer can be provided to the delivery company that is the business user, the delivery company can perform the business management.

  In step S <b> 54, the center apparatus 30 refers to the database 31 and determines whether the transmitted unique identifier, which is a trader ID and a personal ID, is registered in the database 31.

  The center apparatus 30 advances the process to step S55 when the trader ID and the personal ID, which are unique identifiers, are registered valid IDs, and proceeds to step S58 when the ID is not valid. Proceed to.

  In step S <b> 55, the center device 30 records a vendor ID, which is an authenticated unique identifier, and a personal ID together with the current time. This is a measure in the case where the resident A is absent when the visitor X visits. The resident A accesses the center device 30 and returns the information recorded in the database 31 when returning home. By acquiring and displaying on the display unit 23, it is possible to know that the visitor X who is a legitimate visitor has visited and the time of visit.

  In step S56, the center device 30 relates to a visitor such as information indicating a trader name stored in the database 31 in association with a unique identifier and a personal ID, and information indicating the name of the delivery person. The acquired related information is acquired and transmitted to the intercom base unit 20 via the center communication unit 24 together with the authentication processing result.

  The control unit 26 of the intercom master unit 20 sounds a ringing tone in response to pressing of the call button 5 of the intercom slave unit 10 (FIG. 9 (a): step S44), and displays the received authentication processing result and the trader name Display information and information indicating the name of the delivery person are displayed on the display unit 23 to notify that the visitor X is a legitimate visitor.

  At this time, the control unit 26 also causes the display unit 23 to display an image captured by the camera unit 16.

  In step S57, the resident A in the house responds to the call of the visitor X with reference to the information and image displayed on the display unit 23 of the intercom master unit 20.

  In step S <b> 58, the center device 30 does not include the vendor ID and personal ID that are unique identifiers in the data transmitted from the intercom slave device 10, or the vendor ID and personal ID that are the unique identifiers. Is not authenticated as a valid ID, this is recorded together with the current time.

  This is a measure for the case where the resident A is absent when the visitor X visits. The resident A accesses the center device 30 and returns to the information recorded in the database 31 when he / she comes home. Is displayed on the display unit 23, the visitor X who is a visitor who does not have a unique identifier visits, the visit time, or the visitor X who is an unauthenticated visitor. You can know what you have visited and when you visited.

  In step S59, the center apparatus 30 confirms that the visitor X is a visitor who does not have the unique identifier of the vendor ID and personal ID, or that the unique identifier of the vendor ID and personal ID is valid. In response to being a visitor who has not been authenticated as an ID, an authentication processing result indicating that is transmitted to the interphone master unit 20 via the center communication unit 24.

  The control unit 26 of the intercom master device 20 sounds a warning sound and displays the received authentication processing result on the display unit when the call button 5 of the interphone slave device 10 is pressed (step S44: FIG. 9A). To notify that the visitor X is not a valid visitor.

  At this time, the control unit 26 also causes the display unit 23 to display an image captured by the camera unit 16.

  The process of step S59 can be arbitrarily set by the resident A, and when a visitor who does not have a vendor ID and a personal ID visits, it is ignored and no notification is given at all. You can also.

  In step S60, the resident A in the house refers to the information and the image displayed on the display unit 23 of the intercom master unit 20, and responds to the call of the visitor X depending on the case.

  In this way, the intercom system shown as the third embodiment of the present invention has a unique characteristic acquired by the ID reading unit 12 of the intercom handset 10 from the ID tag 40 distributed in advance to a legitimate visitor. Can be transmitted to the center apparatus 30, and by the authentication process by the center apparatus 30, it can be determined whether it is a legitimate visitor or a suspicious person who is not a legitimate visitor.

  Therefore, in the intercom system shown as the third embodiment, there is no need for a call with a visitor who has visited, and authentication processing using a captured image is not required. By doing so, it is possible to identify, for example, traders that are recognized as being excellent in the world and unjustified visitors who call the name of a public institution. Can be secured.

  In addition, the center device 30 includes the house ID for uniquely identifying the house in which the interphone system provided to the interphone slave unit 10 or the interphone master unit 20 is installed, together with the vendor ID and personal ID acquired from the ID tag 40. It is possible to manage the action history of a delivery person belonging to a delivery company who visited a house and a security person belonging to a security company.

  Furthermore, in the intercom system shown as the third embodiment, a human body is detected by the human body detection sensor unit 15 provided in the intercom handset 10 installed in the vicinity of the door 60 or provided in the interphone handset 10. In response to the call button 5 being pressed, the camera unit 16 images the visitor and displays the image via the display unit 23 of the interphone master unit 20 to determine whether the visitor is a valid visitor. Since it is possible to visually present to the resident whether the person is a suspicious person who is not a visitor, the suspicious person is easily distinguished.

  In addition, a visitor who has not been authenticated by the center device 30, a visitor holding an ID tag 40 that may have been invalidated or obtained illegally, or a visit that has no ID tag 40 Since the person's image is also recorded in the recording unit 25, information that is a clue to the criminal investigation can be automatically acquired.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

It is a figure for demonstrating the structure of the intercom system shown as a 1st Embodiment of this invention. It is the figure which showed the mode at the time of installing the intercom system shown as said 1st Embodiment in a house. In the intercom system shown as the first embodiment, (a) is a flowchart for explaining the processing operation of the interphone slave unit, and (b) is a flowchart for explaining the processing operation of the interphone master unit. It is. 6 is a flowchart for explaining the processing operation of the intercom slave when the ID tag is a passive non-contact information medium in the intercom system shown as the first embodiment. It is a figure for demonstrating the structure of the intercom system shown as the 2nd Embodiment of this invention. It is the figure which showed the mode at the time of installing the intercom system shown as said 2nd Embodiment in a house. It is a flowchart for demonstrating the processing operation of an intercom subunit | mobile_unit in the intercom system shown as said 2nd Embodiment. It is a figure for demonstrating the structure of the intercom system shown as the 3rd Embodiment of this invention. In the intercom system shown as the third embodiment, (a) is a flowchart for explaining the processing operation of the interphone slave unit, and (b) is a flowchart for explaining the processing operation of the interphone master unit. It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Interphone cordless handset 12 ID (IDentification) reading part 14 Control part 15 Human body detection sensor part 16 Camera part 20 Interphone main unit 22 Communication part 23 Display part 24 Center communication part 25 Recording part 26 Control part 30 Center apparatus 31 Database 40 ID tag

Claims (6)

Interphone cordless handset installed outside the house,
In response to a call from the interphone slave unit, an interphone master unit installed in a home for making a call with the interphone slave unit,
An ID (IDentification) tag holding a unique identifier,
A center device having a database that stores the unique identifier of the ID tag assigned to a legitimate visitor and related information related to the legitimate visitor in association with each other;
The intercom slave has reading means for reading the unique identifier from the ID tag,
The center device refers to the database using the unique identifier read by the reading means, and performs authentication processing means for performing authentication processing of the unique identifier;
When the unique identifier is authenticated by the authentication processing means, the related information stored in association with the unique identifier is acquired from the database, and an authentication processing result and the related information are obtained. Send to the intercom base unit,
A transmission means for transmitting an authentication processing result to the interphone master unit when the unique identifier is not authenticated by the authentication processing means;
The intercom base unit includes a display unit that displays the authentication processing result and the related information transmitted by the transmission unit. The interphone slave unit or the interphone master unit transmits a house ID, which is a unique identifier that uniquely identifies the interphone slave unit and the house in which the interphone master unit is installed, together with the unique identifier to the center device. ,
The center device stores the house ID in the database as the action history of the legitimate visitor to which the ID tag is attached together with the reception time when the house ID is received and the unique identifier. The intercom system according to claim 1, wherein The ID tag is a non-contact information medium that operates with electric power generated by electromagnetic induction due to reception of an interrogation radio wave and transmits a response radio wave including the unique identifier;
The intercom handset includes first control means for controlling to transmit the interrogation radio wave to the ID tag in response to pressing of a call button when calling the interphone base unit. Item 4. The intercom system according to Item 1. A human body detection sensor for detecting a human body existing in the vicinity area where the intercom handset is installed;
The intercom handset includes a second control unit that transmits the interrogation radio wave to the ID tag in response to the presence of a human body detected by the human body detection sensor. Intercom system. It further comprises imaging means for imaging the vicinity area where the intercom slave is installed,
The interphone slave unit is installed by the imaging means when the call button for calling the interphone master unit is pressed or the presence of a human body is detected by the human body detection sensor. Imaging control means for controlling to start imaging of the adjacent area,
5. The interphone system according to claim 4, wherein the interphone master unit includes display control means for controlling the image picked up by the image pickup means to be displayed on the display means together with the related information. The interphone slave unit or the interphone master unit has an image recording unit that records an image captured by the imaging unit,
The interphone slave unit or the interphone master unit records, in the image recording unit, an image captured by the imaging unit when the unique identifier is not authenticated by the authentication processing unit of the center device. The intercom system according to claim 5, further comprising an image recording control unit that performs control as described above.

Images