DOORBELL, KEY MANAGEMENT SYSTEM, AND INTERCOM SYSTEM

A doorbell (2) includes an operation unit (22) capable of performing a calling operation, a camera (26), a microphone (23), a speaker (24), and a control unit (21) connected to the operation unit (22), the camera (26), the microphone (23) and the speaker (24) and capable of performing direct or indirect communication with an external device in which delivery item information relating to a delivery item is recorded. The control unit (21) is configured to acquire the delivery item information from the external device, and based on the delivery item information, to transmit a delivery notification of the delivery item to an information terminal (3) associated with a resident of a residence to which the doorbell (2) is attached.

TECHNICAL FIELD

The present invention relates to a doorbell.

Also, the present invention relates to a key management system.

Also, the present invention relates to an intercom system.

BACKGROUND ART

Known is a Wi-Fi doorbell including a speaker, a microphone, a camera, and an operation unit and capable of performing wireless communication with a remotely disposed computing device (refer to PTL 1 and the like).

Also, when there is nobody in a residence due to going out, for example, a resident cannot respond to a calling from a visitor. For this reason, for example, if a delivery person visits when the resident is absent, the delivery person performs re-delivery at the time when the resident is present, or leaves a delivery item at an entrance or the like and returns (refer to PTL 8). Therefore, a variety of delivery boxes for placing therein parcels delivered by delivery persons are suggested (refer to PTL 9).

CITATION LIST

Patent Literature

SUMMARY OF INVENTION

Technical Problem

In recent years, as mail order spreads, an amount of delivery items increases, and a labor of the re-delivery becomes problematic when a customer at a delivery destination is absent. For this reason, in order to reduce man-hour and cost of the re-delivery, a service is provided in which when a customer is absent, a delivery item is placed at an entrance of a delivery destination such as a house (so-called “safe drop” service). However, in the “safe drop” service, a delivery item may be stolen or lost

Also, services that can be provided by couriers when a customer is absent include a re-delivery service and a safe drop service. In the re-delivery service, the resident should request a delivery person to perform re-delivery, and a delivery person should perform the re-delivery. Also, in the safe drop service, the delivered parcel may be stolen. For this reason, it is tried to leave a spare key near the entrance, and to allow a visitor (for example a delivery person) to use the spare key and to place a delivery item in the house when a resident is absent. However, even in this case, someone other than an intended person may enter the house by using the spare key, so that there is room for improvement in crime prevention.

Also, most of the delivery boxes are for a housing complex, not a detached house. Therefore, the resident is not affected by a mischievous play of placing an item other than a delivery item in the delivery box. However, a delivery box for a detached house is recently used. Since the delivery box for a detached house is installed in a position in which anybody can open/close the delivery box, unlike the delivery box for housing complex, the mischievous play is likely to be performed. When the mischievous play is performed, the resident may be directly affected by the mischievous play.

It is therefore an object of the present invention to provide a doorbell that allows a resident to easily perceive delivery item information.

Also, the present invention is to provide a doorbell capable of watching a delivery item placed at an entrance.

Also, the present invention is to provide a key management system capable of safely managing a key provided outdoors.

Also, the present invention is to provide an intercom system capable of suppressing an influence of a mischievous play on a delivery box on a resident while preventing the delivery box from being opened for the mischievous play.

Solution to Problem

In order to achieve the above object, a doorbell of the present invention includes:

an operation unit capable of performing a calling operation,

a camera,

a microphone,

a speaker, and

a control unit connected to the operation unit, the camera, the microphone and the speaker, and capable of performing direct or indirect communication with an external device in which delivery item information relating to a delivery item is recorded,

wherein the control unit is configured to acquire the delivery item information from the external device, and based on the delivery item information, to transmit a delivery notification of the delivery item to an information terminal associated with a resident of a residence to which the doorbell is attached.

According to the above configuration, it is possible to provide the doorbell that allows the resident to easily perceive the delivery item information by informing the delivery notification to the information terminal of the resident.

Also, in the above doorbell,

the control unit may be configured to receive a reply notification from the information terminal having received the delivery notification, and to perform an automatic reception operation for automatically receiving the delivery item, based on the reply notification.

According to the above configuration, it is possible to reduce re-delivery of the delivery item when the resident is absent.

Also, in the above doorbell,

the automatic reception operation may include at least one of a voice guide from the speaker and transmission of an automatic receipt to the external device.

According to the above configuration, a delivery person can easily perceive that the resident wants automatic reception, and can acquire and issue an automatic receipt as a certificate of delivery completion.

In order to achieve the above object, a doorbell of the present invention includes:

an operation unit capable of performing a calling operation,

a camera,

a microphone,

a speaker, and

a control unit connected to the operation unit, the camera, the microphone and the speaker, and capable of performing communication with an external device in which delivery item information relating to a delivery item is recorded,

wherein the control unit is configured to change a capturing range of the camera, based on the delivery item information.

According to the above configuration, for example, when the delivery item is placed at an entrance, the capturing range of the camera is changed to a range in which the delivery item can be captured, so that it is possible to watch the delivery item.

Also, in the above doorbell,

the capturing range may include a vicinity of a lower part of the doorbell within a predetermined time from a delivery time included in the delivery item information, and may include a part ahead of the doorbell after the predetermined time elapses.

The capturing range is preferably changed within the above range.

Also, in the above doorbell,

the control unit may be configured to transmit an image of the delivery item captured by the camera within a predetermined time from a delivery time of the delivery item to an information terminal associated with the doorbell, based on the delivery item information.

According to the above configuration, the resident can easily watch the delivery item.

Also, in the above doorbell,

when it is determined that the delivery item has disappeared from the image, the control unit may transmit an alarm, which indicates that the delivery item is not included in the image, to the information terminal.

According to the above configuration, the resident can recognize immediately that the delivery item is stolen or lost, for example.

Also, in the above doorbell,

when it is determined that the delivery item has disappeared from the image, the control unit may output an alarm voice, which indicates that the delivery item is not included in the image, from the speaker.

According to the above configuration, a sound, which indicates that the delivery item has disappeared from the image, is output from the doorbell, so that it is possible to issue a warning of theft or loss around the doorbell, which is helpful to prevent theft.

Also, in the above doorbell,

the control unit may be configured to transmit a delivery notification of the delivery item to an information terminal associated with the doorbell, based on the delivery item information, to receive a reply notification from the information terminal having received the delivery notification, and to perform an automatic reception operation for automatically receiving the delivery item, based on the reply notification, and

the delivery time may include a time at which the automatic reception operation has been performed.

According to the above configuration, the capturing range is changed so that the delivery item is included in the capturing range of the camera by using, as a trigger, the time when the delivery item is placed at the entrance by the safe drop service. As a result, it is possible to appropriately capture the delivery item.

A key management system in accordance with an aspect of the present invention includes:

a doorbell,

a key for opening an entrance door, and

a key box in which the key can be kept,

wherein at least one of the doorbell and the key box includes a camera capable of reading a two-dimensional code, and

wherein when a two-dimensional code in which password information for releasing a closed state of the key box is embedded is read by the camera, the closed state of the key box is released.

According to the above configuration, in order to release the closed state of the key box in which the key is kept, the two-dimensional code having the password information embedded therein should be read by the camera equipped on the doorbell or the key box. For this reason, it is possible to prevent an unintended person from acquiring the key kept in the key box because a person who can acquire the key kept in the key box is limited to a person to whom a resident has transmitted in advance the two-dimensional code having the password information embedded therein.

As such, according to the above configuration, it is possible to provide the key management system capable of safely managing a key provided outdoors.

Also, a key management system in accordance with an aspect of the present invention includes:

a doorbell,

a key for opening an entrance door, and

a key box in which the key can be kept,

wherein the doorbell includes:

a camera capable of capturing a face of a visitor,

a storage unit in which face information can be stored, and

a determination unit configured to compare an image captured by the camera and the face information stored in the storage unit, and to determine whether or not a same person,

wherein the doorbell can perform communication with the key box, and

wherein when the determination unit determines that a person captured in the image matches a person associated with the face information, a closed state of the key box is released.

According to the above configuration, the face of the visitor captured by the camera and the face information stored in the storage unit are compared, and the closed state of the key box in which the key is kept is released only when they are associated with each other. For this reason, since a person who can acquire the key kept in the key box is limited to a person who is stored in advance in the storage unit by a resident, it is possible to prevent an unintended person from acquiring the key kept in the key box.

As such, according to the above configuration, it is possible to provide the key management system capable of safely managing a key provided outdoors.

Also, a key management system in accordance with an aspect of the present invention includes:

a doorbell,

a key for opening an entrance door, and

a key box in which the key can be kept,

wherein the doorbell includes:

a fingerprint recognition unit capable of reading a fingerprint of a visitor,

a storage unit in which fingerprint information can be stored, and

a determination unit configured to compare the fingerprint read by the fingerprint recognition unit and the fingerprint information stored in the storage unit and to determine whether or not a same person,

wherein the doorbell can perform communication with the key box, and

wherein when the determination unit determines that the fingerprint read by the fingerprint recognition unit matches the fingerprint information stored in the storage unit, a closed state of the key box is released.

According to the above configuration, the closed state of the key box in which the key is kept is released only when the determination unit determines that the fingerprint read by the fingerprint recognition unit matches the fingerprint information stored in the storage unit. For this reason, it is possible to prevent an unintended person from acquiring the key kept in the key box because a person who can acquire the key kept in the key box is limited to a person who has the fingerprint stored in advance in the storage unit by a resident.

As such, according to the above configuration, it is possible to provide the key management system capable of safely managing a key provided outdoors.

Also, a key management system in accordance with an aspect of the present invention includes:

a doorbell,

a key for opening an entrance door, and

a key box in which the key can be kept,

wherein the doorbell includes an operation unit to which password information for releasing a closed state of the key box can be input, and

wherein when a predetermined password is input to the operation unit, the closed state of the key box is released.

According to the above configuration, the closed state of the key box in which the key is kept is released only when the predetermined password is input. For this reason, it is possible to prevent an unintended person from acquiring the key kept in the key box because a person who can acquire the key kept in the key box is limited to a person who knows a password.

As such, according to the above configuration, it is possible to provide the key management system capable of safely managing a key provided outdoors.

Also, in the key management system in accordance with an aspect of the present invention,

the predetermined password is changed when a predetermined time elapses.

According to the above configuration, since the predetermined password is a so-called one-time password, the password is frequently changed when the predetermined time elapses.

As such, according to the above configuration, it is possible to provide the key management system capable of safely managing a key provided outdoors.

Also, in the key management system in accordance with an aspect of the present invention,

the entrance door includes a sensor configured to detect that the entrance door is opened and a notification unit configured to notify a terminal of a resident that the entrance door is opened,

the doorbell can perform communication with the entrance door and the terminal of the resident via a network, and

when the sensor detects that the entrance door is opened, the notification unit notifies the terminal of the resident that the entrance door is opened.

According to the above configuration, when an entrance door of a residence is opened, it is notified to a resident. For this reason, even though the resident is in a remote place, the resident can recognize that the entrance door has been opened, and that the key provided outdoors has been used.

As such, according to the above configuration, it is possible to provide the key management system capable of safely managing a key provided outdoors.

Also, in the key management system in accordance with an aspect of the present invention,

the doorbell includes a camera, and

when the closed state of the key box is released, the camera of the doorbell starts capturing.

According to the above configuration, when the closed state of the key box is released, the camera provided on the doorbell starts capturing. For this reason, since a visitor who has released the closed state of the key box is captured by the camera, it is possible to improve crime prevention.

As such, according to the above configuration, it is possible to provide the key management system having improved crime prevention.

Also, in the key management system in accordance with an aspect of the present invention,

when the closed state of the key box is released, the terminal of the resident is notified that the closed state of the key box is released.

According to the above configuration, when the closed state of the key box is released, the terminal of the resident is notified that the closed state of the key box is released. Therefore, it is possible to improve crime prevention.

As such, according to the above configuration, it is possible to provide the key management system having improved crime prevention.

Also, in the key management system in accordance with an aspect of the present invention,

the doorbell includes a camera, and

when the terminal of the resident is notified that the closed state of the key box is released, the doorbell transmits, to the terminal of the resident, an image captured by the camera of the doorbell after the closed state of the key box is released.

According to the above configuration, when notifying the terminal of the resident that the closed state of the key box is released, the doorbell transmits an image of a visitor captured by the camera of the doorbell to the terminal of the resident. For this reason, the resident can know that the closed state of the key box has been released and a person who has released the closed state of the key box.

Also, the key management system in accordance with an aspect of the present invention further includes an in-house camera provided in a residence, and

when the entrance door is opened, the in-house camera starts capturing.

According to the above configuration, when the entrance door of the residence is opened, the in-house camera installed in the residence starts capturing. For this reason, it is possible to improve crime prevention because it is possible to capture a visitor who enters the residence.

As such, according to the above configuration, it is possible to provide the key management system having improved crime prevention.

Also, in the key management system in accordance with an aspect of the present invention,

when the key is kept in the key box in a state where the key is not kept in the key box, the camera of the doorbell captures a visitor.

According to the above configuration, when the key is kept in the key box in a state where the key is not kept in the key box, the camera of the doorbell captures a visitor. For this reason, it is possible to improve crime prevention because it is possible to capture a visitor who enters and then leaves the residence.

As such, according to the above configuration, it is possible to provide the key management system having improved crime prevention.

Also, in the key management system in accordance with an aspect of the present invention,

the key box is provided with a camera capable of capturing a visitor, and

when the key is kept in the key box in a state where the key is not kept in the key box, the camera of the key box captures a visitor.

According to the above configuration, when the key is kept in the key box in a state where the key is not kept in the key box, the camera of the key box captures a visitor. For this reason, it is possible to improve crime prevention because it is possible to capture a visitor who enters and then leaves the residence.

As such, according to the above configuration, it is possible to provide the key management system having improved crime prevention.

An intercom system in accordance with an aspect of the present invention includes:

an entrance slave unit that is operated by a visitor,

a terminal configured to respond to a calling from the entrance slave unit, and

a delivery box in which a delivery item can be accommodated,

wherein the entrance slave unit, the terminal, the delivery box can perform communication,

wherein the delivery box includes a door and a detection unit configured to detect an opened state of the door,

wherein when the detection unit detects that the door is opened, the detection unit transmits an open signal to the terminal, and

wherein when the terminal receives the open signal, the terminal informs a resident that the door is opened.

According to the above configuration, when the door of the delivery box becomes in the opened state, the opened state is informed to the resident. For this reason, when the delivery box is opened due to a mischievous play, for example, the resident can know the same and can take some action.

As such, according to the above configuration, it is possible to provide the intercom system capable of suppressing an influence of the mischievous play on the delivery box on the resident.

Also, in the intercom system in accordance with an aspect of the present invention, the informing is performed by outputting an informing sound.

According to the above configuration, when the door of the delivery box becomes in the opened state, the opened state is informed to the resident by the informing sound. For this reason, the resident can know that the door of the delivery box becomes in the opened state, without monitoring the terminal.

Also, in the intercom system in accordance with an aspect of the present invention,

when the detection unit detects the opened state of the door, a notification sound for notifying the opened state is output from the entrance slave unit.

According to the above configuration, when the door of the delivery box becomes in the opened state, the notification sound is output from the entrance slave unit. For this reason, it is possible to suppress more effectively the mischievous play of opening the delivery box.

Also, in the intercom system in accordance with an aspect of the present invention,

the entrance slave unit includes a camera, and

when the detection unit detects the opened state of the door, the camera starts capturing.

According to the above configuration, when the door of the delivery box becomes in the opened state, the camera of the entrance slave unit starts capturing of a visitor. For this reason, it is possible to specify a person who has opened the door of the delivery box. Also, when the captured data is configured to be saved, it is possible to save an evidence indicating that the person has opened the door of the delivery box.

Also, in the intercom system in accordance with an aspect of the present invention,

the delivery box has an electric lock for keeping a closed state of the door,

the entrance slave unit has a camera, and

when the entrance slave unit detects that an image indicating that a visitor is a delivery person is captured by the camera, the electric lock is unlocked.

According to the above configuration, the electric lock of the delivery box is unlocked only when a visitor is a delivery person. For this reason, it is possible to further prevent a situation that the delivery box is opened by a visitor who has a purpose for a mischievous play.

Also, in the intercom system in accordance with an aspect of the present invention,

the terminal includes an operation unit for outputting an alert or a voice from the entrance slave unit, and

when an operation is performed via the operation unit, an alert or a voice is output from the entrance slave unit.

According to the above configuration, when a resident determines that a visitor tries to open the delivery box for a mischievous play, the resident can operate the operation unit to output an alert or a voice from the entrance slave unit. For this reason, it is possible to suppress the delivery box from being opened by a visitor who has a purpose for a mischievous play.

An intercom system in accordance with an aspect of the present invention includes:

an entrance slave unit that is operated by a visitor,

a terminal configured to respond to a calling from the entrance slave unit, and

a delivery box in which a delivery item can be accommodated,

wherein the entrance slave unit, the terminal, the delivery box can perform communication,

wherein the delivery box includes a door and an electric lock for keeping a closed state of the door, and

wherein when a signal for unlocking the electric lock is generated, the terminal informs a resident that the electric lock is unlocked.

According to the above configuration, the delivery box is provided with the electric lock, so that a visitor cannot open the delivery box unless the visitor unlocks the electric lock. Also, when a signal for unlocking the electric lock is generated, the terminal notifies a resident that the electric lock is unlocked. For this reason, the resident can know a visitor who tries to open the delivery box for a mischievous play, in a stage where the electric lock is unlocked, i.e., before the door of the delivery box is opened.

As such, according to the above configuration, it is possible to provide the intercom system capable of suppressing an influence of a mischievous play on the delivery box on a resident while preventing the delivery box from being opened for the mischievous play.

Also, in the intercom system in accordance with an aspect of the present invention,

the informing is performed by outputting an informing sound.

According to the above configuration, the resident is informed by the informing sound that the electric lock is unlocked. For this reason, the resident can know that the electric lock is unlocked, without monitoring the terminal.

Also, in the intercom system in accordance with an aspect of the present invention,

the entrance slave unit includes a camera, and

when the signal for unlocking the electric lock is generated, the camera starts capturing.

According to the above configuration, when a signal for unlocking the electric lock is generated, the camera of the entrance slave unit starts capturing of a visitor. For this reason, it is possible to specify a visitor at the time when the electric lock is unlocked. Also, when the captured data is configured to be saved, it is possible to save an evidence indicating that the visitor has unlocked the electric lock.

Also, in the intercom system in accordance with an aspect of the present invention,

the entrance slave unit includes a camera, and

when the entrance slave unit detects that an image, which indicates that a visitor is a delivery person, is captured by the camera, the signal for unlocking the electric lock is generated.

According to the above configuration, the electric lock of the delivery box is unlocked only when a visitor is a delivery person. For this reason, it is possible to further prevent a situation that the electric lock is unlocked by a visitor who has a purpose for a mischievous play.

Also, in the intercom system in accordance with an aspect of the present invention,

the delivery box includes a detection unit configured to detect an opened state of the door, and

when the detection unit detects an opened state of the door, a notification sound for notifying the opened state of the door is output from the terminal.

According to the above configuration, when the door of the delivery box becomes in the opened state, the notification sound is output from the terminal. For this reason, a resident can know whether the door of the delivery box is actually opened after the electric lock is unlocked.

Also, in the intercom system in accordance with an aspect of the present invention,

the terminal includes an operation unit for outputting an alert or a voice from the entrance slave unit, and

when an operation is performed via the operation unit, an alert or a voice is output from the entrance slave unit.

According to the above configuration, when a user determines that a visitor tries to open the delivery box for a mischievous play, the user can operate the operation unit to output an alert or a voice from the entrance slave unit. For this reason, it is possible to suppress the delivery box from being opened by a visitor who has a purpose for a mischievous play.

Advantageous Effects of Invention

According to the present invention, it is possible to provide the doorbell that allows the resident to easily perceive the delivery item information.

Also, according to the present invention, it is possible to provide the doorbell capable of watching the delivery item placed at the entrance.

Also, according to the present invention, it is possible to provide the key management system capable of safely managing the key provided outdoors.

Also, according to the present invention, it is possible to provide the intercom system capable of suppressing an influence of a mischievous play on the delivery box on a resident while preventing the delivery box from being opened for the mischievous play.

DESCRIPTION OF EMBODIMENTS

First Embodiment

Hereinbelow, an example of a first embodiment is described with reference to the drawings.

FIG. 1depicts a configuration of a doorbell system in accordance with a first embodiment.

As shown inFIG. 1, a doorbell system1includes a doorbell2, an information terminal3, a server4, and an external device5. The doorbell2and the information terminal3can perform communication with the server4on an external network via a network N. As a communication device configured to relay the doorbell2and information terminal3and the network N, for example, a Wi-Fi router may be used. Also, the server4and the external device5can perform communication with each other via the network N.

FIG. 2is a functional block diagram of the doorbell2.

The doorbell2is used so as for a visitor to call a resident for phone call, and is installed in an entrance of each building (a detached house or the like), for example. The doorbell2is electrically connected to a power system of the building, to which the doorbell is attached, by a predetermined wire, so that power is supplied thereto from the power system. In the meantime, the doorbell2may include a battery for backup and/or primary power.

As shown inFIG. 2, the doorbell2includes a control unit21, an operation unit22, a microphone23, a speaker24, a person detection sensor25, a camera26, an image processing unit27, a position information acquisition unit28, and an interface circuit (hereinbelow, the interface circuit is referred to as “I/F”)29.

The control unit21is a control unit for controlling operations of each unit of the doorbell2, and may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit). The CPU may include a plurality of CPU cores. The GPU may include a plurality of GPU cores. The memory includes a ROM (Read Only Memory) and a RAM (Random Access Memory). In the ROM, a doorbell control program may be stored. In the RAM, the doorbell control program may be temporarily stored. The processor may be configured to develop a program designated from the doorbell control program stored in a storage device or the ROM onto the RAM, and to execute a variety of processing in cooperation with the RAM.

Also, the control unit21may be configured by an integrated circuit (hardware resource) such as an ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) and the like. Also, the control unit21may be configured by a combination of at least one microcontroller and an integrated circuit.

The operation unit22is configured to receive a variety of input operations of a visitor. The diverse input operations include a calling to a resident, for example. The microphone23and the speaker24configure a phone call unit for transmitting voice data of a message and the like of a visitor toward a resident (in the present example, the information terminal3of a resident in a building in which the doorbell2is installed) and outputting voice data of a message and the like of the resident toward the visitor.

The person detection sensor25is a sensor for detecting a person in front of the doorbell2, and is configured by an infrared sensor, for example. The person detection sensor25is connected to the camera26via the control unit21. The person detection sensor25is configured to output a detection signal for informing detection of a person to the camera26. The camera26is a capturing device for capturing a person such as a visitor. The camera26may be configured by a video camera that is a web camera. For example, the camera26is activated by the detection signal that is output from the person detection sensor25. An image captured by the camera26is output to the image processing unit27. The image processing unit27is configured to transmit the image data acquired from the camera26to the server4via the I/F29, based on a control signal of the control unit21.

The position information acquisition unit28is configured to acquire position information of the doorbell2. The position information is acquired using a GPS (Global Positioning System), for example. In the meantime, when installing the doorbell2in a building, the position information of the doorbell2may be registered in advance in the position information acquisition unit28by a resident. The control unit21is configured to transmit the position information acquired by the position information acquisition unit28to the server4. The control unit21is configured to transmit, to the server4, the position information upon initial setting at the time the doorbell2is attached to each residence. In the meantime, when the position information of the doorbell2is updated, the control unit21may transmit the updated position information to the server4.

The I/F29can perform communication with the server4via the network N. Specifically, the I/F29can perform communication with the server4by a network communication means such as wireless local area network (LAN), radio, cellular, the Internet, Bluetooth (registered trademark), electromagnetic wave, infrared light, sonic wave, microwave and the like. As such, the doorbell2can transmit predetermined data (for example, voice data and image data) to the server4and start communication by a two-way voice call or the like between a visitor and a user of the information terminal3. In the meantime, the I/F29of the doorbell2may also be configured to directly perform communication with the information terminal3.

FIG. 3depicts a configuration of the information terminal3.

The information terminal3is used so as for a resident (user) in a residence in which the doorbell2is installed to respond to a calling from the doorbell2, for example. The information terminal3includes, for example, a smartphone, a tablet computer and other portable information terminal carried by the resident. The doorbell2and the information terminal3can perform communication with each other via the server4.

The information terminal3includes a touch screen type display unit30capable of displaying a predetermined user interface32, as shown inFIG. 3. The information terminal3is configured to execute predetermined computer software (for example, application software for voice call and image display), based on data transmitted from the doorbell2. For example, the information terminal3can execute the predetermined application software, based on an input on the user interface32displayed on the display unit30. The user interface32includes an image display unit34on which a display image of a still image or a moving picture is displayed based on image data of a front area captured by the camera26of the doorbell2. Also, the user interface32includes a response permission receiving unit36for permitting a user to respond to a calling of a visitor. When the user touches the response permission receiving unit36, two-way voice communication starts so as to respond to a calling of the visitor. Also, the user interface32includes a recording receiving unit38for allowing the user to select recording of a display image displayed on the image display unit34. When the user touches the recording receiving unit38, a display image that is displayed on the image display unit34can be recorded.

As shown inFIG. 2, the server4includes a storage unit40, and a control unit42. The storage unit40is configured by a memory including a ROM and a RAM, for example. The control unit42includes at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. Also, the control unit42may be configured by an integrated circuit (hardware resource) or may be configured by a combination of at least one microcontroller and an integrated circuit.

The control unit42can store data (image data and voice data) transmitted from the doorbell2in the storage unit40and transmit the data to the information terminal3. Also, the control unit42can store the data transmitted from the information terminal3in the storage unit40, and transmit the data to the doorbell2. As such, the server104can start communication by a two-way voice call or the like between a visitor who visits a building in which the doorbell2is installed and a user of the information terminal3by transmitting and receiving predetermined data (for example, voice data and image data) between the doorbell2and the information terminal3. In the meantime, as described above, the data can also be directly transmitted and received between the doorbell2and the information terminal3without via the server4.

Also, the control unit42can store, in the storage unit4, the position information of the doorbell2acquired by the position information acquisition unit28of the doorbell2and transmitted from the doorbell2to the server4.

The external device5is a device such as a smartphone, a tablet computer or the like carried by a delivery person of a delivery item, for example, and delivery item information relating to the delivery item is recorded therein. The delivery item information includes a content of the delivery item, an address of a delivery destination, a delivery time and the like. The external device5can perform communication with the doorbell2via the server4, and transmit the delivery item information to the doorbell2via the server4.

(Description of Automatic Reception Function of Delivery Item)

Subsequently, operations of an automatic reception function of a delivery item that is executed by the doorbell system1(specifically, the doorbell2) are described with reference toFIGS. 4 to 6.

As shown inFIG. 4, a delivery person having arrived at a building in which the doorbell2is installed so as to deliver a delivery item determines whether a resident in the building (a customer in a delivery destination) is absent (step S1). When it is determined that the resident is absent, the delivery person reads out the delivery item information by using the external device5(step S2). Then, the delivery person transmits the delivery item information from the external device5to the server4(step S3). The control unit42of the server4having received the delivery item information compares the position information of the doorbell2stored in the storage unit40and the delivery destination information included in the delivery item information, and specifies the doorbell2to which the delivery item information is to be transmitted (step S4). That is, when the position information of the doorbell2matches an address of the delivery destination, the control unit42specifies the doorbell2, as a doorbell to which the delivery item information is to be transmitted. Then, the control unit42transmits the delivery item information to the doorbell2specified in step S4(step S5).

Then, the control unit21of the doorbell2transmits, based on the delivery item information acquired from the server4, a delivery notification of the delivery item to the information terminal3associated with the resident of the building to which the doorbell2is attached (step S6).

Then, the information terminal3displays, based on the received delivery notification, delivery notification information relating to the delivery item on the display unit30(step S7). The delivery notification information includes, for example, information indicating that a delivery item has arrived at home and information for causing a user (resident) of the information terminal3to select whether or not to automatically receive a delivery item, as shown inFIG. 5. Specifically, buttons B1and B2for selecting whether or not to automatically receive a delivery item are displayed on the display unit30, together with a message “The delivery item has arrived at home. Do you want to receive it automatically?”. The button B1is a button for selecting to automatically receive a delivery item, and the button B2is a button for selecting not to automatically receive a delivery item.

Then, the information terminal3determines whether the user has selected to receive the delivery item automatically (step S8). When it is determined in step S8that the user has touched the button B1(Yes in step S8), the information terminal3determines that the user has selected to automatically receive the delivery item, and transmits, to the doorbell2, an automatic reception selection notification (an example of the reply notification) indicating that the user has selected to automatically receive the delivery item (step S9).

Then, the control unit21of the doorbell2transmits the received automatic reception selection notification to the server4(step S10) (an example of the automatic reception operation). The control unit21of the server4transmits the received automatic reception selection notification to the external device5having transmitted the delivery item information (step S11).

Then, the external device5generates automatic reception information, based on the received automatic reception selection notification, and displays the automatic reception information on the display unit50(step S12). As shown inFIG. 6, the automatic reception information includes information indicating that a recipient (resident) has approved automatic reception and information about processing for issuing an automatic receipt, for example. Specifically, a message “The recipient has approved automatic reception. Please place the delivery item at the entrance, and press the below button to issue an automatic receipt.” and a button B3“Issue an automatic receipt” are displayed on the display unit50. The delivery person who has checked the display places the delivery item at the entrance, and proceeds to a next step (step S13). As such, the service of placing a parcel at the entrance or in the delivery box designated in advance by a customer (a resident or the like) of a delivery destination and completing the delivery when the customer is absent upon delivery is called as “safe drop”. The place at which the delivery item is placed can be arbitrarily designated by the resident (user).

Then, the external device5determines whether the delivery person has selected the button B3“Issue an automatic receipt” (step S13). When it is determined in step S13that the button B3has been selected (Yes in step S13), the external device5issues an automatic receipt (step S14). Then, the external device5transmits automatic receipt data to the server4(step S15). In the meantime, the automatic receipt may be issued as a paper certificate from the external device5and may be attached to the safely dropped delivery item.

Then, the control unit21of the server4transmits the received automatic receipt data to the doorbell2(step S16). Then, the doorbell2transmits the received automatic receipt data to the information terminal3(step S17). Then, the information terminal3displays the automatic receipt on the display unit30, based on the received automatic receipt data (step S18). As such, the operations of the automatic reception function (safe drop processing) of the delivery item are completed.

On the other hand, as shown inFIG. 7, when it is determined in step S8that the user has touched the button B2(No in step S8), the information terminal3determines that the user has selected not to automatically receive the delivery item, and transmits an automatic reception disapproval notification, which indicates that the user has selected not to automatically receive the delivery item, to the doorbell2(step S20).

Then, the control unit21of the doorbell2transmits the received automatic reception disapproval notification to the server4(step S21). The control unit42of the server4transmits the received automatic reception disapproval notification to the external device5having transmitted the delivery item information (step S22).

Then, the external device5generates automatic reception disapproval information, based on the received automatic reception disapproval notification, and displays the automatic reception disapproval information on the display unit50(step S23). As shown inFIG. 8, the automatic reception disapproval information includes information indicating that a recipient (resident) has not approved automatic reception and information indicating that it is necessary to perform a re-delivery procedure of the delivery item, for example. Specifically, a message “The recipient has not approved automatic reception. Issue an absence communication memo and, ask the recipient to take a re-delivery procedure.” and a button B4“Issue an absence communication memo” are displayed on the display unit50.

Then, the external device5determines whether the delivery person has selected the button B4“Issue an absence communication memo” (step S24). When it is determined in step S24that the button B4has been selected (Yes in step S24), the external device5issues an absence communication memo (step S25). Then, the external device5transmits the absence communication memo data to the server4(step S26). In the meantime, the absence communication memo may be issued as a paper memo from the external device5and may be put into a mailbox of a house, for example.

Then, the control unit42of the server4transmits the received absence communication memo data to the doorbell2(step S27). Then, the doorbell2transmits the received absence communication memo data to the information terminal3(step S28). Then, the information terminal3displays the absence communication memo on the display unit30, based on the received absence communication memo data (step S29). Thereby, the re-delivery processing of the delivery item is completed.

As described above, the doorbell2of the present embodiment includes the operation unit22capable of performing a calling operation, the camera26, the microphone23, the speaker24, and the control unit21capable of performing direct or indirect communication with the external device5in which the delivery item information relating to the delivery item is recorded. The control unit21is configured to acquire the delivery item information from the external device5, and to transmit, based on the delivery item information, the delivery notification of the delivery item to the information terminal3associated with the resident of the house in which the doorbell2is attached. As such, the delivery notification of the delivery item transmitted from the external device5is informed to the information terminal3of the resident via the doorbell2, so that the resident can easily perceive the delivery item information.

Also, the control unit21of the doorbell2is configured to receive the reply notification from the information terminal3having received the delivery notification, and to perform the automatic reception operation for automatically receiving the delivery item, based on the reply notification. Specifically, when it is determined that the user has selected to automatically receive the delivery item, the doorbell2transmits the automatic reception selection notification (an example of the reply notification) received from the information terminal3to the external device5via the server4. The delivery person who carries the external device5having received the automatic reception selection notification checks the automatic reception information displayed on the display unit50, and performs the procedure of issuing the automatic receipt, together with the safe drop of the delivery item. By adopting the above method, it is possible to easily perform the safe drop processing by using the doorbell2when the customer (a resident and the like) of the delivery destination is absent, and to reduce man-hour and cost relating to the re-delivery of the delivery item.

Also, the doorbell2transmits the automatic reception selection notification to the external device5, as the automatic reception operation of the delivery item, so that the delivery person can easily perceive that the resident wants automatic reception (safe drop). Also, the delivery person can acquire and issue the automatic receipt, as a certificate of delivery completion.

In the meantime, the automatic reception operation of the delivery item may be performed using the speaker24of the doorbell2. Specifically, the control unit21of the doorbell2may output a voice guide “The recipient has approved automatic reception. Please place the delivery item at the entrance, and press the below button to issue an automatic receipt.” from the speaker24. Thereby, the delivery person who hears the voice guide from the speaker24can smoothly perform the safe drop processing and the automatic receipt issuance.

(Description of Delivery Item Monitoring Function)

Subsequently, operations of a delivery item monitoring function that is executed by the doorbell system1are described with reference toFIGS. 9 to 11.

As shown inFIG. 9, the control unit21of the doorbell2having received the automatic receipt data determines that the delivery item has been safely dropped, and changes the capturing range of the camera26(step S30). Specifically, as shown inFIG. 10, the control unit21changes the capturing range of the camera26from a front area R1of the doorbell2to a downward lower area R2. Thereby, a delivery item P safely dropped at the entrance can be included in the capturing range of the camera26. Then, the control unit21transmits video data by the camera26of which the capturing range has been changed (video data in which the delivery item P is included in a video) to the information terminal3(step S31).

Then, the information terminal3having received the video data from the doorbell2displays, on the display unit30, a video reception notification for notifying that the video of the delivery item P has been received (step S32). Specifically, as shown inFIG. 11, a message “You have a video of parcel delivered to your home. Do you want to display the video?” and buttons B5and B6that allow a user to input whether or not to display a captured image (video) of the delivery item P are displayed. The button B5is a button for selecting to display the video of the delivery item P, and the button B6is a button for selecting not to display the video of the delivery item P.

Then, the information terminal3determines whether the user has selected to display the video of the delivery item P (step S33). When it is determined in step S33that the user has touched the button B5(Yes in step S33), the information terminal3determines that the display of the video of the delivery item P has been selected, and displays the video of the delivery item P on the display unit30, based on the video data transmitted from the doorbell2(step S34). On the other hand, when it is determined that the user has touched the button B6(No in step S33), the information terminal3determines that the display of the video of the delivery item P has not been selected, and sets the video reception notification shown inFIG. 11to a non-display state (step S35).

In the meantime, in the state where the capturing range of the camera26is changed to the lower area R2in step S30, the control unit21of the doorbell2analyzes the video data of the delivery item P that is captured by the camera26, and determines whether the delivery item P has disappeared from the video data (step S36). When it is determined in step S36that the delivery item P has disappeared from the video (Yes in step S36), the control unit21generates warning information for warning that the delivery item P has disappeared (step S37). Then, the control unit21outputs an alarm voice, which indicates that the delivery item P is not included in the video, from the speaker24, based on the warning information (step S38). Specifically, as shown inFIG. 12, the alarm voice “It is not possible to check the delivered parcel.” is output from the speaker24. Then, the control unit21transmits the warning information to the information terminal3(step S39).

Then, the information terminal3displays the warning information received from the doorbell2on the display unit30(step S40). Thereby, the user of the information terminal3can recognize that the delivery item P has disappeared.

In the meantime, after transmitting the warning information to the information terminal3in step S39, the control unit21of the doorbell2determines whether a predetermined time has elapsed since the camera26has started the capturing of the delivery item P (step S41). When it is determined in step S41that the predetermined time has elapsed (Yes in step S41), the control unit21changes the capturing range of the camera26(step S42). Specifically, the control unit21returns the capturing range of the camera26from the lower area R2to the front area R1of the initial state.

Also, when it is determined in step S36that the delivery item P has not disappeared from the video that is captured by the camera26(No in step S36), the control unit21of the doorbell2determines whether a predetermined time has elapsed since the camera26has started the capturing of the delivery item P (step S41). When it is determined in step S41that the predetermined time has elapsed (Yes in step S41), the control unit21changes the capturing range of the camera26from the lower area R2to the front area R1of the initial state (step S42). As such, the operations of the monitoring function of the delivery item P are completed.

As described above, the doorbell2of the present embodiment includes the operation unit22capable of performing a calling operation, the camera26, the microphone23, the speaker24, and the control unit21capable of performing indirect communication with the external device5in which the delivery item information relating to the delivery item P is recorded, via the server4. The control unit21is configured to change the capturing range of the camera26, based on the delivery item information. Thereby, for example, when the delivery item P is placed at the entrance, the capturing range of the camera26is changed to the range (for example, the lower area R2) in which the delivery item P can be captured, so that it is possible to watch the delivery item P.

Also, the capturing range of the camera26is configured to include the vicinity of the lower part of the doorbell2within a predetermined time from a delivery time of the delivery item P, and to include the front part of the doorbell2after the predetermined time elapses since the delivery time. The capturing range is preferably changed between the front area R1of the initial state and the lower area R2, as described above.

Also, the control unit21is configured to transmit, based on the delivery item information, the image of the delivery item P captured by the camera26within the predetermined time from the delivery time of the delivery item P to the information terminal3associated with the doorbell2. Thereby, for example, the user of the information terminal3who is a resident of the house in which the doorbell2is installed can easily watch the delivery item P.

Also, when it is determined that the delivery item P has disappeared from the image, the control unit21transmits the alarm (warning information), which indicates that the delivery item P is not included in the image, to the information terminal3. Thereby, the resident can rapidly recognize that the delivery item P has been stolen or lost.

Also, when it is determined that the delivery item P has disappeared from the image, the control unit21outputs the alarm voice, which indicates that the delivery item P is not included in the image, from the speaker24. As such, the alarm, which indicates that the delivery item P has disappeared from the captured image of the camera26, is notified from the doorbell2, so that it is possible to issue a warning of theft or loss around the doorbell2, which is helpful to prevent theft, and the like.

In the first embodiment, the doorbell2is configured to perform indirect communication with the external device5via the server4. However, the present invention is not limited thereto. For example, the doorbell2may also be configured to perform direct communication with the external device5carried by the delivery person, via the IF29and the network N.

In the doorbell system1of the first embodiment, the information terminal3associated with the resident is exemplified as the external device, and the doorbell2is configured as the Wi-Fi doorbell capable of performing wireless communication with the information terminal3. However, the present invention is not limited thereto. For example, as the external device, a living room mater unit provided in a living room of the house in which the doorbell2is installed may be included. That is, the doorbell2may also be configured as a doorbell capable of performing communication with the living room mater unit via an intercom line, for example.

Second Embodiment

Hereinbelow, an example of a second embodiment of the present invention is described with reference to the drawings.

Also, a “right and left direction”, a “front and rear direction”, and a “vertical direction” are referred to as appropriate in the descriptions of the present embodiment for sake of convenience. The directions are relative directions set with respect to a key management system101shown inFIG. 13. Herein, the “vertical direction” is a direction including an “upper direction” and a “lower direction”. The “front and rear direction” is a direction including a “front direction” and a “rear direction”. The “right and left direction” is a direction including a “left direction” and a “right direction”.

FIG. 13depicts a key management system101in accordance with a second embodiment of the present invention. As shown inFIG. 13, the key management system101includes a doorbell102, a key103, a key box104, and an entrance door105.

The doorbell102is substantially cuboid. A camera201is disposed at an upper part of the doorbell102. A microphone202is provided at a substantially central part of the doorbell102. A speaker203is provided at a left upper part of the doorbell102.

The key103is to open the entrance door105of a residence. The key103is normally kept in the key box104. When the key103is kept in the key box104, the key box104is in a closed state.

The key box104is substantially cuboid. A forward surface of the key box104is provided with an openable/closable cover. The key box104has a space therein. The key103can be kept in the space. A camera401is provided at a lower part of the key box104.

The entrance door105is substantially cuboid. The entrance door105has a doorknob501, and an opening/closing sensor502. In the example ofFIG. 13, the doorknob501is disposed at a substantially central part on the right side of the entrance door105, and the opening/closing sensor502is disposed above the doorknob501.

In the embodiment shown inFIG. 13, the doorbell102and the key box104are disposed on the right side of the entrance door105of the residence. The doorbell102is disposed above the key box104. However, the positions of the doorbell102, the key box104and the entrance door105are not limited thereto.

FIG. 14is a functional block diagram of the key management system101. The key management system101of the present example includes the doorbell102, the key box104, a terminal106, the entrance door105, and an in-house camera107. As shown inFIG. 14, the doorbell102includes a camera201, a microphone202, a speaker203, a person detection sensor204, a video processing unit205, an operation unit207, a communication IF (interface)208, a control unit209, a storage unit214, a fingerprint recognition unit215, a determination unit218, and a GPS (Global Positioning System) (not shown), which are communicatively connected to each other via a bus219.

The camera201is configured to capture a surrounding including the front of the doorbell102. When a visitor exists in a capturing range of the camera201, the camera201captures the visitor. Also, the camera201has an OCR function, and can read a two-dimensional code. The microphone202is configured to capture a voice such as a voice of a visitor around the doorbell102, for example. The speaker203is configured to output a voice such as a voice of a resident captured by a terminal of the resident (also referred to as a user), for example, a microphone of an intercom master unit.

Also, the camera201can function as a camera for face capturing. In this case, the camera201is configured to capture a face of a visitor. Image data captured by the camera201is transmitted to the video processing unit205.

The person detection sensor204is configured to detect a visitor by infrared ray or the like. When the person detection sensor204detects a visitor, the person detection sensor204notifies the control unit209that the visitor is approaching the doorbell102.

The control unit209is a control unit for controlling operations of each unit of the doorbell102, and may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit).

The control unit209controls the camera201to start capturing when a capturing start signal, which will be described later, is received from the key box104. Also, the control unit209controls the camera201to start capturing when a visitor comes and is detected by the person detection sensor204or when a visitor calls a user via the operation unit207.

The video processing unit205may be configured by a processor that is similar to the processor of the control unit209. The video processing unit205has software for analyzing an image such as a photograph. The video processing unit205is configured to process an image and the like captured by the camera201and to generate a signal. The video processing unit205is configured to extract and signalize features such as a contour, hairs, eyebrows, eyes, nostrils, lips, ears, scars and moles of a human face from the image showing the human face, for example. Also, the video processing unit205is configured to extract and signalize features of a fingerprint such as a shape from an image showing a human fingerprint, for example. The generated signal is transmitted to the determination unit218.

The operation unit207is configured to receive a variety of input operations of the visitor. The diverse input operations include a calling to a user, a password input for releasing a closed state of the key box104, and the like. The operation unit207is configured to generate a variety of signals, based on the received diverse input operations, and to transmit the same to the control unit209. For example, the operation unit207may be configured by a ten key pad and the like. When a visitor inputs a password for releasing a closed state of the key box104to the operation unit207, the input password information is transmitted to the control unit406of the key box104, as a signal.

The communication IF208is a device or an interface enabling connection to the network109via a router108. The doorbell102can appropriately perform communication with the key box104, terminal106and entrance door105connected to the network109, via the communication IF208and the router108. The router108is, for example, a mobile router.

The storage unit214has a storage area in which data relating to human faces and data relating to human fingerprints can be stored. The storage unit214stores therein person image data, fingerprint image data, and the like, for example.

The fingerprint recognition unit215has a sensor capable of reading fingerprints. The sensor has a protective film. Below the protective film, many electrodes are disposed. When a visitor touches the fingerprint recognition unit215with a finger, the fingerprint recognition unit215recognizes a change in charges of the electrodes. The fingerprint recognition unit215is configured to convert an amount of charges determined by a distance between a fingerprint of the visitor and the electrodes into image data. The image data is transmitted to the determination unit218.

The determination unit218is configured to compare the fingerprint-related data transmitted from the fingerprint recognition unit215or the data transmitted from the video processing unit205and the data stored in the storage unit214, and to calculate coincidence points and difference points. When the coincidence points are more than a predetermined value, the determination unit218determines that the visitor is a person associated with the data stored in the storage unit214.

As shown inFIG. 14, the key box104includes the camera401, a detection unit403, a communication IF (interface)405, and a control unit406, which are communicatively connected to each other via a bus408.

The camera401is configured to capture a surrounding including the front of the key box104. When a visitor exists in a capturing range of the camera401, the camera401captures the visitor. The camera401starts capturing of the visitor around the key box104when a capturing start signal is received from the control unit406. Also, the camera401has an OCR function, and can read a two-dimensional code.

The detection unit403has a sensor configured to detect the key103kept in the key box104. As the sensor, for example, an optical sensor, an infrared sensor and the like may be used. The detection unit403can monitor all the time whether the key103is kept in the key box104by the sensor. When the key103is kept in the key box104, the detection unit403continues to transmit a signal (signal A), which indicates that the key103is kept in the key box104, to the control unit406. On the other hand, when the key103is not kept in the key box104, the detection unit403continues to transmit a signal (signal B), which indicates that the key103is not kept in the key box104, to the control unit406.

When the closed state of the key box104is released, the detection unit403transmits a signal, which indicates that the closed state of the key box104is released, to the terminal106.

The communication IF405is a device or an interface enabling connection to the network109. The key box104can perform appropriately communication with the doorbell102, terminal106and entrance door105connected to network109, via the communication IF405.

The control unit406is a control unit for controlling operations of each unit of the key box104, and may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit).

The control unit406can recognize the password information from the signal relating to the password information transmitted from the doorbell102. When the password information matches preset password information for releasing the closed state of the key box104, the control unit406controls to release the closed state of the key box104. On the other hand, when the password information does not match, the closed state of the key box104is held. In the meantime, the preset password may also be a so-called one-time password. In this case, the control unit406re-sets the password to another password when a predetermined time elapses.

When the closed state of the key box104is released, the control unit406transmits a capturing start signal to the doorbell102.

When the control unit406receives the signal A for the first time after receiving the signal B from the detection unit403, the control unit406generates a capturing start signal and transmits the same to the camera401and the control unit209. Also, when the control unit406receives the signal A for the first time after receiving the signal B from the detection unit403, the control unit406controls to lock the cover of the key box104at the time when the cover of the key box104is closed.

As shown inFIG. 14, the terminal106includes a display unit603, an operation unit604, a communication IF (interface)605, and a control unit606, which are communicatively connected to each other via a bus607.

The display unit603is a display such as a liquid crystal monitor, an organic EL display and the like, and can display operation images, diverse application images, and the like.

The operation unit604is configured to receive an input operation of a user who operates the terminal106. The operation unit604is a touch display disposed with being superimposed on the display unit603, an operation button provided separately from the display unit603, and the like, for example. The operation unit604is configured to generate diverse signals, based on the received diverse input operations, and to transmit the same to the control unit606. The input operations include, for example, a browse request operation for image data captured by the in-house camera107.

The communication IF605is communicatively connected to the doorbell102, the key box104, the entrance door105and the in-house camera107, via the network109.

The control unit606is a control unit for controlling operations of each unit of the terminal106, and may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit).

As shown inFIG. 14, the entrance door105includes a doorknob501, an opening/closing sensor502, an opening/closing detection unit503, a notification unit504, a communication IF (interface)505, and a control unit507. The opening/closing sensor502, the opening/closing detection unit503, the notification unit504, the communication IF505and the control unit507are communicatively connected to each other via a bus508.

The opening/closing detection unit503has a sensor. The sensor is, for example, an optical sensor, an infrared sensor and the like. The opening/closing detection unit503can detect opening/closing of the entrance door105of the residence by the sensor. When the opening/closing detection unit503detects that the entrance door105is opened, the opening/closing detection unit503transmits a signal, which indicates that the entrance door105is opened, to the notification unit504.

When the notification unit504receives the signal, which indicates that the entrance door105is opened, from the opening/closing detection unit503, the notification unit504transmits the signal, which indicates that the entrance door105is opened, to the terminal106and the in-house camera107via the network109.

The communication IF505is a device or an interface enabling connection to the network109. The entrance door105can perform appropriately communication with the doorbell102, key box104and terminal106connected to the network109, via the communication IF505.

Also, the communication IF505is a device or an interface enabling connection to the in-house camera107. The entrance door105can perform appropriately communication with the in-house camera107via the communication IF505.

The control unit507is a control unit for controlling operations of each unit of the entrance door105, and may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit).

As shown inFIG. 14, the in-house camera107includes a camera701, a communication IF (interface)702, a control unit703, and a saving unit704, which are communicatively connected to each other via a bus705. The in-house camera107is a camera that is installed in a residence, for example. The in-house camera107is installed near an entrance of the residence, for example.

The camera701is configured to capture an inside of the residence, for example, a vicinity of the entrance.

The communication IF702is a device or an interface enabling connection to the in-terminal106. The in-house camera107can perform appropriately communication with the entrance door105and the terminal106via the communication IF702.

The control unit703is a control unit for controlling operations of each unit of the in-house camera107, and may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit). When the control unit703receives a signal, which indicates that the entrance door105is opened, for example, the control unit703controls the camera701to start capturing. Also, the control unit703controls the camera701to transmit the captured image data to the saving unit704.

The saving unit704has a storage area in which the image data captured by the camera701can be saved.

First Operation Example

Subsequently, in the key management system101where authentication by a two-dimensional code is used, a flow until the closed state of the key box104is released is described with reference toFIG. 15.FIG. 15is a flowchart depicting a flow until the closed state of the key box104is released, in the key management system101where authentication by a two-dimensional code is used.

A user of the doorbell102downloads a dedicated application for password generation into the terminal106carried by the user (step S101). The application is saved in a server (not shown) that can connect to the terminal106via the network. The user can download the application saved in the server by causing the terminal106to connect to the server via the network.

The user activates the application, and registers the information about the doorbell102and user of the doorbell102(for example, position information of the doorbell102) (step S102). The position information of the doorbell102is, for example, an address of the user for registration as the position information of the doorbell102or position information acquired by the GPS of the terminal106.

When the position information of the doorbell102is registered, two-dimensional code information having password information embedded therein for releasing the closed state of the key box104is generated based on the input information by the application (step S103). In the meantime, the password may also be a so-called one-time password. In this case, the password is invalidated when a predetermined time elapses.

The user transmits the two-dimensional code from the terminal106to a terminal of a visitor, for example, a smartphone (step S104).

When a visitor arrives at the residence, the visitor holds the two-dimensional code transmitted from the user over the camera201. The camera201reads the two-dimensional code (step S105).

The two-dimensional code information read by the camera201is transmitted to the video processing unit205. The video processing unit205analyzes the two-dimensional code information to acquire the embedded password information (step S106). The password information is transmitted to the control unit406of the key box104. The control unit406compares the received password information and a preset password for releasing the closed state of the key box104(step S107).

When the received password information matches the preset password, the control unit406controls to release the closed state of the key box104(step S108).

On the other hand, when the received password information does not match the preset password, the control unit406controls to keep the closed state of the key box104. At this time, the control unit406may control the speaker203to output an error message “The checking has failed.”

Second Operation Example

Subsequently, in the key management system101where face recognition is used, a flow until the closed state of the key box104is released is described with reference toFIG. 16.FIG. 16is a flowchart depicting a flow until the closed state of the key box104is released, in the key management system101where face recognition is used.

A user of the doorbell102stores information such as a face image of a visitor and the like in advance in the storage unit214(step S111). As used herein, the face image is, for example, JPEG photograph data. The user stores information about a face image of a visitor in the storage unit214by transmitting photograph data to the doorbell102or causing the camera201to capture a face.

When a visitor arrives at the residence, the camera201captures a face of the visitor (step S112). The data captured by the camera201is transmitted to the video processing unit205. The video processing unit205extracts features such as a contour, hairs, eyebrows, eyes, nostrils, lips, ears, scars and moles of a human face from the captured data, and generates a signal. The video processing unit205transmits the signal to the determination unit218.

The determination unit218compares the received captured data and the face information stored in the storage unit214and determines whether or not a same person (step S113). The determination unit218compares the data transmitted from the video processing unit205and the data stored in the storage unit214, and calculates coincidence points and difference points. When the coincidence points are more than a predetermined value, the determination unit218determines that the visitor is a person associated with the data stored in the storage unit214(YES in step S113). In this case, the determination unit218transmits a checking success signal to the control unit406of the key box104. The control unit406controls to release the closed state of the key box104(step S114). On the other hand, when the determination unit218determines that the visitor is not associated with any data stored in the storage unit214, the determination unit218does not transmit any signal to the control unit406(NO in step S113). For this reason, the closed state of the key box104is kept (step S115).

Third Operation Example

Subsequently, in the key management system101where fingerprint authentication is used, a flow until the closed state of the key box104is released is described with reference toFIG. 17.FIG. 17is a flowchart depicting a flow until the closed state of the key box104is released, in the key management system101where fingerprint authentication is used.

A user of the doorbell102stores fingerprint information of a visitor in advance in the storage unit214(step S121). The user stores fingerprint information of a visitor in the storage unit214by transmitting fingerprint image data of the visitor to the doorbell102or causing the camera201to capture a fingerprint image of the visitor, for example.

When a visitor arrives at the residence, the visitor touches the fingerprint recognition unit215with a finger. Then, the fingerprint recognition unit215reads a fingerprint of the finger of the visitor (step S122). The fingerprint recognition unit215generates fingerprint-related data (fingerprint information) of the visitor from a change in charges of the electrodes, and transmits the same to the determination unit218.

The determination unit218compares the received fingerprint information and the fingerprint information stored in the storage unit214, calculates coincidence points and difference points, and determines whether the read fingerprint matches the fingerprint information stored in the storage unit214(step S213). When the coincidence points are more than a predetermined value, the determination unit218determines that the fingerprint information of the visitor matches the fingerprint information stored in the storage unit214(YES in step S123). In this case, the determination unit218transmits a checking success signal to the control unit406of the key box104. The control unit406controls to release the closed state of the key box104(step S124). On the other hand, when the determination unit218determines that the fingerprint information of the visitor does not match the fingerprint information stored in the storage unit214(NO in step S123), the determination unit218does not transmit any signal to the control unit406. For this reason, the closed state of the key box104is kept (step S125).

Fourth Operation Example

Subsequently, in the key management system101where a password is input, a flow until the closed state of the key box104is released is described with reference toFIG. 18.FIG. 18is a flowchart depicting a flow until the closed state of the key box104is released, in the key management system101where a password is input.

A user of the doorbell102downloads a dedicated application for password generation into the terminal106carried by the user (step S131). The application is saved in a server (not shown) that can connect to the terminal106via the network. The user can download the application saved in the server by causing the terminal106to connect to the server via the network.

The user activates the application, and registers information about the doorbell102and user of the doorbell102(forexample, position information of the doorbell102)(step S132). The position information of the doorbell102is, for example, an address of the user for registration as the position information of the doorbell102or position information acquired by the GPS of the terminal106.

When the position information of the doorbell102is registered, password information for releasing the closed state of the key box104is generated based on the input information by the application (step S133). In the meantime, the password information is a character string in which numbers, English characters and the like are combined, for example.

The user transmits the password information from the terminal106to the terminal of a visitor, for example, a smartphone (step S134).

When the visitor arrives at the residence, the visitor inputs the password to the operation unit207(step S135).

The input password information is transmitted to the control unit406of the key box104, as a signal. The control unit406compares the received password information and a preset password for releasing the closed state of the key box104(step S136).

When the received password information matches the preset password (YES in step S136), the control unit406controls to release the closed state of the key box104(step S137). On the other hand, when the password does not match (NO in step S136), the control unit406keeps the closed state of the key box104(step S138).

Fifth Operation Example

Subsequently, a flow after the closed state of the key box104is released until a notification indicating the release is sent to the terminal106is described with reference toFIG. 19.FIG. 19is a flowchart depicting a flow after the closed state of the key box104is released until a notification indicating the release is sent to the terminal106.

When any one authentication method of the first operation example to the fourth operation example is executed, the closed state of the key box104is released (step S141). When the closed state of the key box104is released, the control unit406transmits a capturing start signal to the control unit209of the doorbell102. When the control unit209receives the capturing start signal, the control unit209controls the camera201to start capturing. The camera201starts capturing of the visitor (step S142).

When the closed state of the key box104is released, the control unit406transmits a signal, which indicates that the closed state of the key box104is released, to the terminal106via the network109. Thereby, the terminal106is notified that the closed state of the key box104is released (step S143). At this time, the image data captured by the camera201is also transmitted to the terminal106(step S144).

Sixth Operation Example

Subsequently, a flow after the entrance door105is opened until image data captured by the in-house camera107is displayed on the terminal106is described with reference toFIG. 20.FIG. 20is a flowchart depicting a flow after the entrance door105is opened until image data captured by the in-house camera107is displayed on the terminal106.

When any one authentication method of the first operation example to the fourth operation example is executed, the closed state of the key box104is released. When the closed state of the key box104is released, the visitor can take out the key103from the key box104. The visitor can open the entrance door105by using the key103. When the entrance door105is opened (step S151), a signal, which indicates that the entrance door105is opened, is transmitted from the opening/closing detection unit503to the notification unit504. When the notification unit504receives the signal, which indicates that the entrance door105is opened, from the opening/closing detection unit503, the notification unit504notifies the terminal106that the entrance door105is opened (step S152).

Also, the notification unit504transmits the signal, which indicates that the entrance door105is opened, to the control unit703of the in-house camera107. The control unit703controls the camera701to start capturing, based on the signal (step S153).

The image data captured by the camera701is saved in the saving unit704. When browsing the image data, the user performs a browse request operation for image data with the operation unit604(step S154).

The control unit606generates a browse request signal for image data, based on the request, and transmits the same to the control unit703of the in-house camera107. The control unit703transmits the image data saved in the saving unit704to the terminal106, based on the request (step S155). As a result, a desired image is displayed on the display unit603(step S156),

Seventh Operation Example

Subsequently, a flow until the camera201of the doorbell102starts capturing of a visitor when the visitor returns the key103to the key box104and gets back is described with reference toFIG. 21.FIG. 21is a flowchart depicting a flow until the camera201of the doorbell102starts capturing of a visitor when the visitor returns the key103to the key box104and gets back.

The detection unit403monitors all the time whether the key103is kept in the key box104, through the sensor (step S161). When the key103is kept in the key box104, the detection unit403transmits the signal A to the control unit406, and when the key103is not kept in the key box104, the detection unit403transmits the signal B to the control unit406. When the detection unit403transmits the signal A (YES in step S161), the detection unit403proceeds to step S161. On the other hand, when the detection unit403transmits the signal B (NO in step S161), the detection unit403proceeds to step S162.

When the key103is kept in the key box104(YES in step S162), the detection unit403transmits the signal A to the control unit406. The control unit406having received the signal A transmits a capturing start signal to the control unit209of the doorbell102. The control unit209controls the camera201to start capturing, based on the capturing start signal (step S163). On the other hand, when the detection unit403transmits the signal B (NO in step S162), the detection unit403proceeds to step S161.

Eighth Operation Example

Subsequently, a flow until the camera401starts capturing of a visitor when the visitor returns the key103to the key box104and gets back is described with reference toFIG. 22.FIG. 22is a flowchart depicting a flow until the camera401starts capturing of a visitor when the visitor returns the key103to the key box104and gets back.

The detection unit403monitors all the time whether the key103is kept in the key box104, through the sensor (step S171). When the key103is kept in the key box104, the detection unit403transmits the signal A to the control unit406, and when the key103is not kept in the key box104, the detection unit403transmits the signal B to the control unit406. When the detection unit403transmits the signal A (YES in step S171), the detection unit403proceeds to step S171. On the other hand, when the detection unit403transmits the signal B (NO in step S171), the detection unit403proceeds to step S172.

When the key103is kept in the key box104(YES in step S172), the detection unit403transmits the signal A to the control unit406. The control unit406having received the signal A transmits a capturing start signal to the camera401. The camera401having received the capturing start signal starts capturing (step S173). On the other hand, when the detection unit403transmits the signal B (NO in step S172), the detection unit403proceeds to step S171.

According to the first operation example, in order to release the closed state of the key box104in which the key103is kept, the two-dimensional code having the password information embedded therein should be read by the camera201or the camera401. For this reason, only the person to whom the resident has transmitted in advance the two-dimensional code having the password information embedded therein is allowed to use the key103kept in the key box104. As a result, it is possible to prevent a person who is not allowed to use the key103from acquiring the key103kept in the key box104.

As such, according to the first operation example, it is possible to provide the key management system101capable of safely managing the key103provided outdoors.

Also, according to the second operation example, the face of the visitor captured by the camera201and the face information stored in the storage unit214are compared, and the closed state of the key box104in which the key103is kept is released only when they are associated with each other. For this reason, a person who can acquire the key103kept in the key box104is limited to the person whom the resident has stored in advance in the storage unit214, so that it is possible to prevent a person who is not allowed to use the key103from acquiring the key103kept in the key box104.

Also, according to the third operation example, only when the determination unit218determines that the fingerprint read by the fingerprint recognition unit215matches the fingerprint information stored in the storage unit214, the closed state of the key box104in which the key103is stored is released. For this reason, a person who can acquire the key103kept in the key box104is limited to the person who has the fingerprint that the resident has stored in advance in the storage unit214, so that it is possible to prevent a person who is not allowed to use the key103from acquiring the key103kept in the key box104.

Also, according to the fourth operation example, only when the predetermined password is input, the closed state of the key box104in which the key103is kept is released. For this reason, a person who can acquire the key103kept in the key box104is limited to the person who knows the password in advance, so that it is possible to prevent a person who is not allowed to use the key103from acquiring the key103kept in the key box104.

Also, since the predetermined password of the fourth operation example is a so-called one-time password, the password is frequently changed when the predetermined time elapses.

Also, according to the fifth operation example, when the closed state of the key box104is released, the camera201of the doorbell102starts capturing. For this reason, since the visitor having released the closed state of the key box104is captured by the camera201, it is possible to improve crime prevention.

As such, according to the fifth operation example, it is possible to provide the key management system101having improved crime prevention.

Also, according to the fifth operation example, when the closed state of the key box104is released, the terminal106of the resident is notified that the closed state of the key box104is released, so that it is possible to improve crime prevention.

Also, according to the fifth operation example, when notifying the terminal106of the resident that the closed state of the key box104is released, the doorbell102transmits an image of the visitor captured by the camera201of the doorbell102to the terminal106of the resident. For this reason, the resident can know that the closed state of the key box104is released, and the person who has released the closed state.

Also, according to the sixth operation example, when the entrance door105of the residence is opened, the in-house camera107installed in the residence starts capturing. For this reason, since it is possible to capture a visitor who has entered the residence, it is possible to improve crime prevention.

Also, according to the seventh operation example, when the key103is kept in the key box104in a state where the key103is not kept in the key box104, the camera201of the doorbell102captures a visitor. For this reason, since it is possible to capture the visitor who enters and then leaves the residence, it is possible to improve crime prevention.

Also, according to the eighth operation example, when the key103is kept in the key box104in a state where the key103is not kept in the key box104, the camera401of the key box104captures a visitor. For this reason, since it is possible to capture the visitor who enters and then leaves the residence, it is possible to improve crime prevention.

In the second embodiment, the key box104is installed on the left side of the entrance door105. However, the present invention is not limited thereto. For example, the key box104may be provided at the front of the door of the residence. Also, when the key box104is provided at the front of the door of the residence, a plurality of keys such as keys for opening/closing the door and the entrance door105may be kept in the key box104.

In the second embodiment, the camera201can also function as a camera for face capturing. However, the present invention is not limited thereto. For example, the doorbell102may include a camera for face capturing that is a camera other than the camera201.

Hereinbelow, a third embodiment and a fourth embodiment of the present invention are described with reference to the drawings.

FIG. 23is a pictorial view of an intercom system801in accordance with a third embodiment and a fourth embodiment of the present invention. As shown inFIG. 23, the intercom system801includes an entrance slave unit802, a terminal803, and a delivery box804. The entrance slave unit802, the terminal803and the delivery box804can perform direct or indirect communication each other in a wired or wireless manner. As the terminal803, for example, an electronic device such as an intercom master unit, a tablet terminal, a smartphone and the like can be used.

Third Embodiment

FIG. 24is a functional block diagram of the intercom system801in accordance with the third embodiment. In the present embodiment, an intercom master unit805is used as the terminal803. As shown inFIG. 24, the entrance slave unit802includes a camera821, a microphone822, a speaker823, a voice device control unit824, a calling unit825, a video processing unit826, a central control unit827, and a communication IF (interface)828.

The camera821is configured to capture a surrounding including the front of the entrance slave unit802. When a visitor exists in a capturing range of the camera821, the camera821captures the visitor. Also, the camera821can read an image such as a two-dimensional code, a barcode and the like. The microphone822is to capture a voice such as a voice of a visitor near the entrance slave unit802. The speaker823is configured to output voice data controlled by the voice device control unit824, as a voice.

The voice device control unit824is a control unit for controlling operations of the microphone822and the speaker823. The voice device control unit824may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The voice device control unit824is configured the speaker823to output the voice data, as a voice, for example.

The voice device control unit824can store data relating to artificial voice and alert sound. As the artificial voice, for example, there is a voice “Please stop the mischievous play on the delivery box.” As the alert sound, for example, there is a siren sound. Based on the data relating to the artificial voice and alert sound, the voice device control unit824is configured to transmit a drive signal to the speaker823so as to cause the speaker823to output a voice.

The calling unit825includes a signal generator and a calling button, which are not shown. When a visitor presses the calling button, the calling unit825generates a calling signal, and transmits the calling signal to the central control unit827.

The video processing unit826is a control unit for controlling an operation of the camera821and image data processing. The video processing unit826may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The video processing unit826is configured to transmit image data (also referred to as captured data) captured by the camera821to the central control unit827, for example. Also, the video processing unit826is configured to analyze an image and to transmit a result of the analysis to the central control unit827. Also, the video processing unit826can drive the camera821, based on a camera drive signal received from the central control unit827.

The central control unit827is a control unit for controlling operations of the voice device control unit824and the video processing unit826, and transmission and reception of data between the intercom master unit805and the delivery box804. The central control unit827may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit).

When the central control unit827receives the calling signal, the central control unit827transmits the signal to the intercom master unit805. Also, when the central control unit827receives the calling signal for a predetermined time, the central control unit827generates a request signal for changing a mode into a mode (delivery mode) of comparing whether a visitor is a delivery person. The request signal is transmitted to the video processing unit826or the intercom master unit805.

When the central control unit827receives an open signal from the delivery box804, the central control unit827generates a camera drive signal, and transmits the camera drive signal to the video processing unit826. The central control unit827is configured to control the video processing unit826so as to drive the camera821, based on the camera drive signal.

In the meantime, at least some of functions of at least one of the voice device control unit824and the video processing unit826in the entrance slave unit802can also be implemented by cooperation of the processor and memory of the central control unit827.

The communication IF828is a device or an interface enabling communication with the intercom master unit805or the delivery box804.

As shown inFIG. 24, the intercom master unit805includes a monitor851, a microphone852, a speaker853, a voice device control unit854, an operation unit855, a video processing unit856, a central control unit857, and a communication IF (interface)858.

The monitor851is a display such as a liquid crystal monitor, an organic EL display and the like, and is configured to display an image and the like captured by the camera821.

The microphone852is to capture a voice such as a voice of a resident (also referred to as user) near the intercom master unit805. The speaker853is configured to output a voice such as a voice of a visitor captured by the microphone822of the entrance slave unit802and an informing sound.

The voice device control unit854may be configured by hardware that is similar to the voice device control unit824. The voice device control unit854is a control unit for controlling operations of the microphone852and the speaker853. The voice device control unit854is configured to control the speaker853to output an informing sound, which indicates that the door841of the delivery box804is in the opened state, for example.

The operation unit855is configured to receive diverse input operations of the resident. The diverse input operations include, for example, an operation for a resident to respond, in response to a visitor's operating the calling unit825, an operation of causing the speaker823to output a voice of a resident having uttered toward the microphone852, an operation of causing the speaker823to output a warning message, a warning sound and the like, an operation of driving the camera821, and the like. The operation unit855is configured to generate diverse signals, based on the received diverse input operations, and to transmit the same to the central control unit857. The operation unit855may be configured by buttons for respective operations or the monitor851may be configured to include a touch panel having functions of the operation unit855.

The video processing unit856may be configured by hardware that is similar to the video processing unit826. The video processing unit856is configured to display an image on the monitor851, based on the image data transmitted from the entrance slave unit802.

Also, the video processing unit856may be configured to perform the image analysis, instead of the video processing unit826,

The central control unit857is a control unit for controlling operations of the voice device control unit854and the video processing unit856and transmission and reception of data that is performed between the entrance slave unit802and the delivery box804. The central control unit857may include at least one microcontroller including one or more processors and one or more memories, and other electronic circuit including an active element such as a transistor and a passive element. The processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit) and/or a TPU (Tensor Processing Unit).

The central control unit857is configured to generate, based on the request signal transmitted from the entrance slave unit802, a signal for requesting drive of the camera821. The drive request signal is transmitted to the entrance slave unit802. Also, the central control unit857is configured to control the video processing unit856so that the video processing unit856is to perform image analysis for the data captured by the camera821of the entrance slave unit802.

When it is confirmed that the visitor is a delivery person, as a result of the image analysis, the central control unit857generate an unlock signal for unlocking the door841of the delivery box804and transmits the same to the delivery box804. In the meantime, the above operations may also be performed by the central control unit827of the entrance slave unit802.

Also, when the central control unit857receives the calling signal from the calling unit825of the entrance slave unit802for a predetermined time, instead of receiving the request signal from the entrance slave unit802, the central control unit857changes the mode of the intercom master unit805into the delivery mode. When the mode is changed to the delivery mode, the central control unit857generates a request signal for driving the camera821and transmits the same to the entrance slave unit802. Also, in this case, the central control unit857is configured to control the video processing unit856so that the video processing unit856is to perform image analysis for the data captured by the camera821of the entrance slave unit802.

In the meantime, at least some of functions of at least one of the voice device control unit854and the video processing unit856in the intercom master unit805can also be implemented by cooperation of the processor and memory of the central control unit857.

The communication IF858is a device or an interface enabling communication with the entrance slave unit802or the delivery box804.

As shown inFIG. 24, the delivery box804may include a door841, a detection unit842, a communication IF (interface)843, and an electric lock844. In the meantime, the delivery box804may not include the electric lock844.

The door841is configured to be openable/closable. When the door841is in an opened state, a resident, a visitor and the like can access a space in which a delivery item can be accommodated.

The detection unit842has a sensor. The detection unit842is configured to detect at predetermined time intervals or continuously an opened/closed state of the door841of the delivery box804by using infrared ray, microwave, millimeter wave and the like. When the door841of the delivery box804is in the opened state, the detection unit842transmits a signal, which indicates that the door841is in the opened state, to the entrance slave unit802or the intercom master unit805.

The communication IF843is a device or an interface enabling communication with the entrance slave unit802or the intercom master unit805.

The electric lock844can lock the door841. The door841is normally locked by the electric lock844. The electric lock844can open or close the door841by an unlock or lock signal from the entrance slave unit802or the intercom master unit805. As such, the delivery box804having the electric lock844can be locked and unlocked, in response to an electric signal.

FIG. 25is a sequence diagram depicting a flow of operations of the intercom system801with no electric lock844in accordance with the third embodiment. A visitor who visits a residence opens the door841(step S311).

When the door841is opened, the detection unit842transmits a signal (open signal), which indicates that the door841is in the opened state, to the central control unit857of the intercom master unit805(step S312).

The central control unit857having received the open signal controls the voice device control unit854to output an informing sound from the speaker853(step S313). The informing sound is to inform a resident that the door841is opened. The informing sound may be a buzzer sound or a message voice.

Also, when the central control unit857receives the open signal from the detection unit842, the central control unit857generates a camera drive signal. The central control unit857transmits the open signal and camera drive signal to the entrance slave unit802(step S814). Thereby, the camera821is driven (step S315). Also, based on the open signal, a message “The capturing starts from now on.” is output from the speaker823(step S315).

When the camera821starts capturing, the camera821transmits the captured data to the video processing unit826. The video processing unit826transmits the captured data to the central control unit827. The central control unit827transmits the captured data to the intercom master unit805, as a video signal (step S316).

The video processing unit856displays the captured image on the monitor851, based on the captured data transmitted from the entrance slave unit802(step S317). In the meantime, the captured data received from the entrance slave unit802is stored (recorded) in a storage unit (not shown) (step S317).

When the resident determines from the image displayed on the monitor851that the door841is opened due to the mischievous play, the resident inputs, to the operation unit855, an operation (alert output operation) for causing the speaker823to output a message including a warning to the visitor, an alert sound and the like (step S318). The operation unit855generates an alert output signal, based on the input operation, and transmit the signal to the central control unit857. The central control unit857transmits the alert output signal to the central control unit827of the entrance slave unit802(step S319).

When the central control unit827receives the alert output signal, the central control unit827controls the voice device control unit824to output an alert based on the signal from the speaker823(step S320).

FIG. 26is a sequence diagram depicting a flow of operations of the intercom system801with the electric lock844in accordance with the third embodiment. This flow is different from the flow shown inFIG. 25, in that a visitor should unlock the electric lock844before opening the door841. A visitor (delivery person) who visits a residence continues to press the calling button provided on the entrance slave unit802for a predetermined time (step S301). Thereby, a signal for requesting a change to the delivery mode is generated and transmitted to the intercom master unit805(step S302). As a result, the intercom master unit805is switched to the delivery mode.

When the intercom master unit805is switched to the delivery mode, an informing sound is output from the speaker853(step S303). The informing sound is to inform the resident that the intercom master unit805is switched to the delivery mode. The informing sound may be a buzzer sound or a message voice.

When the intercom master unit805is switched to the delivery mode, the central control unit857generates a camera drive signal and transmits the same to the entrance slave unit802(step S304). Thereby, the camera821is driven. At this time, a message “The capturing starts from now on.” may be output from the speaker823.

When the camera821is driven, the camera821can be caused to read an image indicating that the visitor is a delivery person. At this time, the voice device control unit824may control the speaker823to output a message “Please hold the invoice over the camera.” The visitor causes the camera821to read an image indicating that the visitor is a delivery person. As the image, for example, an invoice such as a delivery memo may be used. When causing the camera821to read an invoice such as a delivery memo, the visitor holds the invoice over the camera821(step S305). The camera821captures the invoice.

In the meantime, herein, the example where it is identified whether the visitor is a delivery person, based on a layout of a fill-in frame of the invoice, has been described. However, the present invention is not limited to the example. For example, a two-dimensional code, a barcode or the like indicating that a visitor is a delivery person may also be used.

The video processing unit826transmits the image data captured by the camera821to the central control unit827. The central control unit827transmits the image data, as a video signal, to the intercom master unit805(step S306).

The video processing unit856of the intercom master unit805analyzes whether the invoice is a delivery memo or the like, from the layout of the fill-in frame of the invoice included in the image data received from the entrance slave unit802. When the invoice is, for example, a delivery memo, the video processing unit856generates a checking signal (step S307), and transmits the same to the central control unit857. Also, the video processing unit856displays, on the monitor851, the captured image, based on the image data transmitted from the entrance slave unit802(step S307). In the meantime, the image data transmitted from the entrance slave unit802is stored (recorded) in a storage unit (not shown) (step S307).

When it is not checked that the visitor is a delivery person, the intercom master unit805transmits the result to the entrance slave unit802. In this case, the entrance slave unit802generates an artificial voice or alert sound for notifying that the checking has not been made, based on the data stored in the voice device control unit824, and outputs the same from the speaker823.

Also, in this case, a message indicating that the checking has not been made is displayed on the monitor851of the intercom master unit805. Thereby, the resident can recognize that the checking has not been made.

On the other hand, when it is checked that the visitor is a delivery person, the central control unit857transmits an unlocking signal to the delivery box804(step S308). The delivery box804having received the unlocking signal unlocks the electric lock844(step S309). The door841is in an openable/closable state. Thereby, the delivery person can open the door841of the delivery box804(step S311), and put a delivery item into an accommodation space of the delivery box804. The delivery person puts the delivery item into the accommodation space and then closes the door841. When a predetermined time elapses since the door841is closed, the electric lock844can lock the door841.

The flow (from step S311to S320) after the delivery person opens the door841of the delivery box804is similar to the case where the delivery box804is not provided with the electric lock844. Therefore, the descriptions thereof are omitted.

In the third embodiment, when the unlocking signal is transmitted from the central control unit857of the intercom master unit805to the delivery box804, and when the open signal is transmitted from the detection unit842of the delivery box804to the central control unit857of the intercom master unit805, the informing sound is output from the speaker853of the intercom master unit805. However, the present invention is not limited thereto. Each step from S311to S313may be omitted. That is, when the informing sound, which is output when the unlocking signal is transmitted from the central control unit857to the delivery box804, is output (step S310), the central control unit857may generate the open signal and the camera drive signal, and transmit the same to the entrance slave unit802(step S314).

Fourth Embodiment

Subsequently, an intercom system801in accordance with a fourth embodiment is described with reference toFIGS. 27 to 30.FIG. 27is a functional block diagram of the intercom system801in accordance with the fourth embodiment.

The fourth embodiment is different from the third embodiment, in that a mobile communication terminal806and a server807are used instead of the intercom master unit805. As shown inFIG. 27, the intercom system801of the fourth embodiment includes an entrance slave unit802, a mobile communication terminal806, a server807, and a delivery box804.

The entrance slave unit802and the delivery box804of the fourth embodiment are similar to the entrance slave unit802and the delivery box804of the third embodiment, and the descriptions thereof are thus omitted. The mobile communication terminal806is an electronic device such as a tablet terminal, a smartphone and the like.

As shown inFIG. 27, the mobile communication terminal806includes a display unit861, a microphone862, a speaker863, a voice device control unit864, an operation unit865, a video processing unit866, a central control unit867, and a communication IF (interface)868.

The display unit861is a touch screen type display such as a liquid crystal monitor, an organic EL display and the like, and is configured to display an operation screen, an image captured by the camera821, and the like.

The microphone862is to capture a voice such as a voice of a user of the mobile communication terminal806. The speaker863is to output a voice such as a voice of a visitor captured by the microphone822of the entrance slave unit802, and an informing sound.

The voice device control unit864may be configured by hardware that is similar to the voice device control unit854of the intercom master unit805. The voice device control unit864is a control unit for controlling operations of the microphone862and the speaker863.

The operation unit865is a touch panel superimposed on the display unit861, operation buttons attached to the mobile communication terminal806, and the like, for example. The operation unit865is configured to receive diverse input operations of the user. The diverse input operations include, for example, an operation for a resident to respond, in response to a visitor's operating the calling unit825, an operation of causing the speaker823to output a voice of a user having uttered toward the microphone862, an operation of causing the speaker823to output a warning message, a warning sound and the like, an operation of displaying image data on the display unit861, and the like. The operation unit865is configured to generate diverse signals, based on the received diverse input operations, and to transmit the same to the central control unit867.

The video processing unit866may be configured by hardware that is similar to the video processing unit826. The video processing unit866is configured to display image data transmitted from the server807on the display unit861.

The central control unit867is a control unit for controlling operations of the voice device control unit864and the video processing unit866and transmission and reception of data that is performed among the entrance slave unit802, the server807and the delivery box804. The central control unit867may be configured by hardware that is similar to the central control unit827.

When it is checked that a visitor is a delivery person, the central control unit867generates an unlocking signal for unlocking the door841of the delivery box804, and transmits the same to the delivery box804. In the meantime, the above operations may also be performed by the central control unit827of the entrance slave unit802.

When the central control unit867receives an image acquisition signal or an alert output signal from the operation unit865, the central control unit867transmits the signal to the server807.

The communication IF868is a device or an interface enabling communication with the server807. The communication IF868and the server807can perform communication with each other via an Internet line and the like.

As shown inFIG. 27, the server807includes a storage unit871, a video processing unit872, a control unit873, and a communication IF (interface)874. The server807is, for example, a cloud server.

The storage unit871has a storage area in which diverse electric signals, voice data, sound data, image data and the like can be saved.

The video processing unit872may be configured by hardware that is similar to the video processing unit826. The video processing unit872can perform image analysis for image data captured by the camera821. The video processing unit872is configured to transmit a result of the analysis to the control unit873.

The control unit873is a control unit for controlling operations of the storage unit871and the video processing unit872, and transmission and reception of data that is performed between the entrance slave unit802and the mobile communication terminal806. The control unit873may be configured by hardware that is similar to the central control unit827.

When the control unit873receives an open signal from the detection unit842, the control unit873transmits informing sound data stored in the storage unit871for informing the user that the door841is opened to the mobile communication terminal806, based on the open signal.

When the control unit873receives an image acquisition signal from the central control unit867, the control unit873controls the storage unit871to transmit image data, based on the image acquisition signal.

The communication IF874is a device or an interface enabling communication with the entrance slave unit802or the mobile communication terminal806. In the present embodiment, the server807connects to the delivery box804via the entrance slave unit802. However, the present invention is not limited thereto. For example, the server807may directly connect to the delivery box804via the communication IF874.

FIG. 28is a sequence diagram depicting a flow of operations of the intercom system801with no electric lock844in accordance with the fourth embodiment.

Since steps S341to S342are similar to steps S311to S312, the descriptions thereof are omitted.

The central control unit827of the entrance slave unit802transmits an open signal received from the delivery box804to the control unit873of the server807(step S343). The control unit873transmits informing sound data stored in the storage unit871for informing the user that the door841is opened to the mobile communication terminal806(step S344). The central control unit867of the mobile communication terminal806controls the speaker863to output an informing sound, based on the informing sound data. As a result, the informing sound is output from the speaker863(step S845). In the meantime, the informing sound may be a buzzer sound or a message voice.

Also, in the entrance slave unit802having received the open signal, the central control unit827generates a camera drive signal, and transmits the camera drive signal to the video processing unit826. The video processing unit826drives the camera821, based on the camera drive signal (step S346). Also, the central control unit827generates a notification sound output signal, and transmits the notification sound output signal to the voice device control unit824. The voice device control unit824outputs a notification sound from the speaker823, based on the notification sound output signal (step S346). The notification sound may include a message “The capturing starts from now on.”

When the camera821starts the capturing, the camera821transmits the captured data to the video processing unit826. The video processing unit826transmits the captured data to the central control unit827. The central control unit827transmits the captured data to the control unit873, as an image signal (step S347). The control unit873controls the storage unit871to store (record) the captured data therein (step S348).

The user who hears the informing sound in step S345inputs, to the operation unit865, an operation (monitor request operation) for displaying the captured data on the display unit861so as to monitor the visitor (step S349). Based on the monitor request operation, the central control unit867generates an image acquisition signal and transmits the same to the server807(step S350).

The control unit873of the server807controls the storage unit871to transmit the captured data to the control unit873, based on the received image acquisition signal. The storage unit871transmits the captured data to the control unit873, based on the image acquisition signal. The control unit873transmits the captured data to the central control unit867(step S351).

The central control unit867transmits the received captured data to the video processing unit866. The video processing unit866displays the captured data on the display unit861(step S352).

When the user determines from the image displayed on the display unit861that the door841is opened due to a mischievous play, the user inputs, to the operation unit865, an operation (alert output operation) for causing the speaker823to output a message including a warning to a visitor, an alert sound or the like (step S353). Based on the alert output operation, the central control unit867generates an alert output signal, and transmits the signal to the server807(step S354). The control unit873of the server807transmits the alert output signal to the entrance slave unit802(step S355).

When the central control unit827of the entrance slave unit802receives the alert output signal, the central control unit827controls the voice device control unit824to output the information based on the signal from the speaker823(step S356).

FIG. 29is a sequence diagram depicting a flow of operations of the intercom system801with the electric lock844in accordance with the fourth embodiment. This flow is different from the flow shown inFIG. 28, in that it is necessary for a visitor to unlock the electric lock844before opening the door841. A visitor (delivery person) who visits a residence continues to press the calling button provided on the entrance slave unit802for a predetermined time (step S321). Thereby, the central control unit827switches the entrance slave unit802to the delivery mode. Also, the central control unit827generates a camera drive signal. The central control unit827transmits the camera drive signal to the video processing unit826. When the video processing unit826receives the camera drive signal, the camera821is driven (step S322). A message “The capturing starts from now on.” may be output from the speaker823.

When the camera821is driven, the camera821can be caused to read an image indicating that the visitor is a delivery person. At this time, a message “Please hold the invoice over the camera.” may be output from the speaker823. The visitor causes the camera821to read an image indicating that the visitor is a delivery person. For example, when causing the camera821to read an invoice such as a delivery memo, the visitor holds the invoice over the camera821(step S323). The camera821captures the invoice.

In the meantime, herein, the example where it is identified whether the visitor is a delivery person, based on a layout of a fill-in frame of the invoice has been described. However, the present invention is not limited to the example. For example, a two-dimensional code, a barcode or the like indicating that a visitor is a delivery person may also be used.

The entrance slave unit802transmits data captured by the camera821to the central control unit827. The central control unit827transmits the image data to the server807, as a video signal (step S324).

The control unit873of the server807transmits the received image data to the video processing unit872. The video processing unit872transmits the received image data to the storage unit871. The storage unit871stores (records) the image data (step S325). Also, the video processing unit872analyzes the image data captured by the camera821.

The video processing unit872analyzes whether the invoice is a delivery memo or the like, from the layout of the fill-in frame of the invoice included in the image data received from the entrance slave unit802(step S325). When the invoice is, for example, a delivery memo, the video processing unit872generates a checking signal and transmits the same to the entrance slave unit802(step S326). When the central control unit827of the entrance slave unit802receives the checking signal, the central control unit827generates an unlocking signal and transmits the unlocking signal to the delivery box804(step S327). On the other hand, when it is not checked that the visitor is a delivery person, an artificial voice or alert sound based on the data stored in the voice device control unit824is output from the speaker823.

The delivery box804having received the unlocking signal unlocks the electric lock844(step S328). The door841is in an openable/closable state.

When the video processing unit872of the server807transmits the checking signal to the entrance slave unit802, the control unit873generates an unlocking notification signal, and transmits the signal to the mobile communication terminal806(step S329). When the central control unit867of the mobile communication terminal806receives the signal, the central control unit867controls the voice device control unit864to output an informing sound from the speaker863(step S330). The informing sound is to inform the user that the electric lock844is unlocked. The informing sound may be a buzzer sound or a message voice.

When the electric lock844is unlocked (step S328), the delivery person can open the door841of the delivery box804. The delivery person can open the door841(step S341), and put a delivery item into the accommodation space of the delivery box804.

The flow (from step S341to S356) after the delivery person opens the door841of the delivery box804is similar to the case where the delivery box804is not provided with the electric lock844. Therefore, the descriptions thereof are omitted.

Fifth Embodiment

Subsequently, an intercom system801in accordance with a fifth embodiment is described with reference toFIGS. 30 to 32.FIG. 30is a functional block diagram of the intercom system801in accordance with the fifth embodiment.

The intercom system801of the fifth embodiment is different from the third embodiment, in that it includes a mobile communication terminal806and a server807, in addition to an entrance slave unit802, an intercom master unit805and a delivery box804. Also, the intercom system801of the fifth embodiment is different from the fourth embodiment, in that it includes the intercom master unit805, in addition to the entrance slave unit802, the mobile communication terminal806, the server807and the delivery box804. As shown inFIG. 30, the intercom system801of the fifth embodiment includes an entrance slave unit802, an intercom master unit805, a mobile communication terminal806, a server807, and a delivery box804.

The entrance slave unit802, the intercom master unit805and the delivery box804of the fifth embodiment are similar to the entrance slave unit802, the intercom master unit805and the delivery box804of the third embodiment. Also, the mobile communication terminal806and the server807of the fifth embodiment are similar to the mobile communication terminal806and the server807of the fourth embodiment. However, the communication IF828and the communication IF858are different from the third embodiment, in that they connect to the communication IF874as well. Also, the communication IF843may be configured to connect to the communication IF874.

FIG. 31is a sequence diagram depicting a flow of operations of the intercom system801with no electric lock844in accordance with the fifth embodiment.

Since steps S381to S383are similar to steps S311to S313, the descriptions thereof are omitted.

The central control unit857of the intercom master unit805transmits an open signal received from the delivery box804to the server807(step S384). The control unit873of the server807transmits the informing sound data stored in the storage unit871for informing the user that the door841is opened to the mobile communication terminal806(step S385). The central control unit867controls the speaker863to output the informing sound, based on the informing sound data. As a result, the informing sound is output from the speaker863(step S386). In the meantime, the informing sound may be a buzzer sound or a message voice.

Since steps S387to S390are similar to steps S314to S317, the descriptions thereof are omitted.

Since steps S391to S396are similar to steps S347to S352, the descriptions thereof are omitted.

Since steps S397to S399are similar to steps S318to S320, the descriptions thereof are omitted.

Since steps S3100to S3103are similar to steps S353to S356, the descriptions thereof are omitted.

FIG. 32is a sequence diagram depicting a flow of operations of the intercom system801with the electric lock844in accordance with the fifth embodiment.

Since steps S361to S369are similar to steps S301to S309, the descriptions thereof are omitted.

When the electric lock844is unlocked (step S369), the delivery person can open the door841of the delivery box804. The delivery person can open the door841(step S381), and put a delivery item into the accommodation space of the delivery box804.

When the central control unit857of the intercom master unit805transmits an unlocking signal to the delivery box804, the central control unit857generates an unlocking notification signal and transmits the same to the server807(step S370). The control unit873of the server807transmits the unlocking notification signal to the mobile communication terminal806(step S371). When the central control unit867of the mobile communication terminal806receives the signal, the central control unit867controls the voice device control unit864to output an informing sound from the speaker863(step S372). The informing sound is to inform the user that the electric lock844is unlocked. The informing sound may be a buzzer sound or a message voice.

The flow (from step S381to S3103) after the delivery person opens the door841of the delivery box804is similar to the case where the delivery box804is not provided with the electric lock844. Therefore, the descriptions thereof are omitted.

According to the configuration of the third to fifth embodiment, when the door841of the delivery box804is opened, the informing sound for informing the resident that the door841is opened is output from the speaker853of the intercom master unit805. For this reason, since the resident can know that the door841is opened, the resident can take some action.

As such, according to the configurations of the third to fifth embodiments, it is possible to provide the intercom system801capable of suppressing an influence of the mischievous play on the delivery box804on the resident.

According to the configurations of the third to fifth embodiments, when the door841of the delivery box804is in the opened state, it is informed to the resident by the informing sound. For this reason, the resident can know that the door841of the delivery box804is in the opened state, without monitoring the terminal803.

Also, according to the configurations of the third to fifth embodiments, when the door841of the delivery box804is opened, the notification sound that may include a message “The capturing starts from now on.” is output from the speaker823of the entrance slave unit802. For this reason, the mischievous play can be more effectively suppressed for a person who opens the door841for the purpose of the mischievous play.

Also, according to the configurations of the third to fifth embodiments, when the door841of the delivery box804is opened, the camera821starts the capturing of the visitor. For this reason, it is possible to specify the person who opens the door841. Also, when the captured data is saved (recorded), the captured data can be an evidence indicating that the person opened the door841. For this reason, it is possible to suppress the door841from being opened for the purpose of the mischievous play.

Also, according to the configurations of the third to fifth embodiments, in a case where the delivery box804has the electric lock844, the door841can be caused to be in the opened state only when it is checked that the visitor is a delivery person. For this reason, it is possible to prevent the door841from being opened by a visitor who has a purpose of the mischievous play.

Also, according to the configurations of the third to fifth embodiments, when the resident determines that a visitor intends to open the delivery box for the purpose of the mischievous play, the resident can output an alert or a voice from the speaker823of the entrance slave unit802by operating the operation unit855. For this reason, it is possible to prevent the door841of the delivery box804from being opened by a visitor who has a purpose of the mischievous play.

In the third to fifth embodiments, the resident performs the alert output operation, so that a message including a warning to a visitor, an alert sound or the like is output from the speaker823. However, the present invention is not limited thereto. For example, when an image indicating that a visitor is a delivery person is not captured for a predetermined time by the camera821, a message including a warning to a visitor, an alert sound or the like may be automatically output from the speaker823. Also, when a predetermined time further elapses, the delivery mode of the entrance slave unit802is released.

Sixth Embodiment

FIG. 33is a sequence diagram depicting a flow of operations of an intercom system801with an electric lock844in accordance with a sixth embodiment. Since steps S421to S431are similar to step S321to S331shown inFIG. 29, the descriptions thereof are omitted.

After the electric lock844is unlocked, a delivery person opens the door841of the delivery box804(step S431). When the door841is opened, the detection unit842transmits, to the server807, a signal (open signal) indicating that the door841is in the opened state (step S432).

The control unit873of the server807having received the open signal transmits the informing sound data stored in the storage unit871for informing the user that the door841is opened to the mobile communication terminal806(step S433). The central control unit867of the mobile communication terminal806controls the voice device control unit864to output the informing sound based on the informing sound data from the speaker863(step S434). In the meantime, The informing sound may be a buzzer sound or a message voice.

Also, when the entrance slave unit802transmits an unlocking signal to the delivery box804(step S427), the central control unit827generates a camera drive signal, and transmits the camera drive signal to the video processing unit826. The video processing unit826drives the camera821, based on the camera drive signal (step S435). Also, the central control unit827generates a notification sound output signal, and transmits the notification sound output signal to the voice device control unit824. The voice device control unit824outputs a notification sound from the speaker823, based on the notification sound output signal (step S435). The notification sound may include a message “The capturing starts from now on.”, for example.

When the camera821starts capturing, the camera821transmits the captured data to the video processing unit826. The video processing unit826transmits the captured data to the central control unit827. The central control unit827transmits the captured data to the control unit873, as a video signal (step S436). The control unit873controls the storage unit871to store (record) the captured data (step S437).

Since steps S438to S445are similar to steps S349to S356shown inFIG. 29, the descriptions are omitted.

In the sixth embodiment, when a checking signal, which is one of signals for unlocking the electric lock844, is transmitted from the video processing unit872to the entrance slave unit802, and when the open signal is transmitted from the detection unit842to the control unit873of the server807, the informing sound is output from the speaker863of the mobile communication terminal806. However, the present invention is not limited thereto. For example, each step from S831to S834may be omitted.

Seventh Embodiment

Subsequently, an intercom system801in accordance with a seventh embodiment is described with reference toFIG. 34.

FIG. 34is a sequence diagram depicting a flow of operations of an intercom system801with an electric lock844in accordance with the seventh embodiment.

Since steps S451to S459are similar to steps S301to S309, the descriptions thereof are omitted.

When the central control unit857of the intercom master unit805transmits an unlocking signal to the delivery box804, the central control unit857generates an unlocking notification signal and transmits the same to the server807(step S460). The control unit873of the server807transmits the signal to the mobile communication terminal806(step S461). When the central control unit867of the mobile communication terminal806receives the signal, the central control unit867controls the voice device control unit864to output an informing sound from the speaker863(step S462). The informing sound is to inform the user that the electric lock844is unlocked. The informing sound may be a buzzer sound or a message voice.

After the electric lock844is unlocked (step S459), a delivery person opens the door841of the delivery box804(step S463). When the door841is opened, the detection unit842transmits, to the central control unit857of the intercom master unit805, a signal (open signal) indicating that the door841is in the opened state (step S464). The central control unit857having received the open signal controls the voice device control unit854to output an informing sound from the speaker853(step S465). The informing sound is to inform a resident that the door841is opened. The informing sound may be a buzzer sound or a message voice. Also, when the central control unit857receives the open signal from the detection unit842, the central control unit857generates a camera drive signal. The central control unit857transmits the open signal and camera drive signal to the entrance slave unit802(step S466). Thereby, the camera821is driven (step S467). Also, a message “The capturing starts from now on.” is output from the speaker823, based on the open signal (step S467).

Also, the detection unit842transmits the open signal to the control unit873of the server807(step S468). The control unit873transmits the open signal to the central control unit867of the mobile communication terminal806(step S469). The central control unit867having received the open signal controls the voice device control unit864to output an informing sound from the speaker863(step S470). The informing sound is to inform a resident that the door841is opened. The informing sound may be a buzzer sound or a message voice.

Since steps S471and S472are similar to steps S316and S317, the descriptions thereof are omitted.

Since steps S473to S478are similar to steps S436to S441, the descriptions thereof are omitted.

Since steps S479to S481are similar to steps S318to S320, the descriptions thereof are omitted.

Since steps S482to S485are similar to steps S442to S445, the descriptions thereof are omitted.

In the seventh embodiment, when the door841of the delivery box804is opened, the informing sound is output from the speaker853of the intercom master unit805and the speaker863of the mobile communication terminal806. However, the present invention is not limited thereto. For example, each step from S463to S470may be omitted.

According to the configurations of the third to seventh embodiments, since the delivery box804is provided with the electric lock844, the delivery box804cannot be opened unless the electric lock844is unlocked. Also, when the signal for unlocking the electric lock844is generated, the resident is informed from the terminal803that the electric lock844is unlocked. For this reason, the resident can recognize a visitor who intends to open the delivery box804for the purpose of the mischievous play, in a stage where the electric lock844is unlocked. As a result, the resident can take some action against a visitor who intends to open the delivery box804for the purpose of the mischievous play.

As such, according to the configurations of the third to seventh embodiments, it is possible to provide the intercom system801capable of suppressing an influence of the mischievous play on the delivery box804on the resident while preventing the delivery box804from being opened due to the mischievous play.

Also, according to the configurations of the third to seventh embodiments, it is informed by the informing sound that the electric lock844is unlocked. Therefore, the resident can know that the electric lock844is unlocked, without monitoring the terminal803.

Also, according to the configurations of the third to seventh embodiments, when the signal for unlocking the electric lock844is generated, the camera821of the entrance slave unit802starts capturing of the visitor. For this reason, it is possible to specify the visitor at the time when the electric lock844is unlocked. Also, when the captured data is configured to be saved, it is possible to secure an evidence indicating that the visitor has unlocked the electric lock844.

Also, according to the configurations of the third to seventh embodiments, the electric lock844of the delivery box804is unlocked only when the visitor is a delivery person. For this reason, it is possible to further prevent the electric lock844from being unlocked by a visitor who has the purpose of the mischievous play.

Also, according to the configurations of the third to seventh embodiments, when the door841of the delivery box804is in the opened state, the informing sound is output from the terminal803. For this reason, the resident can know whether the door841of the delivery box804is actually opened after the electric lock844is unlocked.

Also, according to the configurations of the third to seventh embodiments, when the resident determines that the visitor tries to open the delivery box804for the purpose of the mischievous play, the resident operates the operation unit855to output an alert or a voice from the speaker823of the entrance slave unit802. For this reason, it is possible to suppress the door841of the delivery box804from being opened by a visitor who has the purpose of the mischievous play.

In the third to seventh embodiments, the resident performs the alert output operation, so that a message including a warning to a visitor, an alert sound or the like is output from the speaker823. However, the present invention is not limited thereto. For example, when an image indicating that a visitor is a delivery person is not captured for a predetermined time by the camera821, a message including a warning to a visitor, an alert sound or the like may be automatically output from the speaker823. Also, when a predetermined time further elapses, the delivery mode of the entrance slave unit802is released.

In the meantime, the present invention is not limited to the above embodiments, and can be appropriately changed and modified. In addition, the materials, shapes, sizes, values, forms, numbers, arrangement places and the like of the constitutional elements in the above embodiments are arbitrary and are not particularly limited inasmuch as the present invention can be achieved.

The subject application is based on Japanese Patent Application Nos. 2018-033332, 2018-033333, 2018-033334, 2018-033335, and 2018-033336 filed on Feb. 27, 2018, the contents of which are incorporated herein by reference.