System for installing a doorbell and intercom system with video and remote data transmission functionality for a multi-family building

Abstract

System for installing a doorbell and intercom system with video and remote data transmission functionality for a multi-family building, wherein the system (24) is designed to be integrated into an existing doorbell and intercom system in such a way that it is extended by a video / audio stream to a user device of a resident of an apartment in the multi-family building (1) without affecting the functionality of the existing doorbell and intercom system, and wherein the system (24) comprises: - a communication unit (4) with a camera (27), a microphone (28) and a loudspeaker (29), wherein the communication unit (4) is adapted to be installed on an outside of the multi-family building (1) in the area of ​​an existing doorbell and intercom system (3), - a connection and linking component (12) for connecting to the existing bell and intercom system (3), wherein the connection and linking component (12) has an electrical circuit comprising several connection elements (14) for looping into several circuits (15) of several bells (25) of the existing bell and intercom system (3), so that when a bell (25) is pressed, this can be detected via the respective connection element (14), - a data link unit (9) for establishing a video and data connection, - a control unit (10) adapted to send, based on detection by the connection and linking component (12), a doorbell information indicating which doorbell (25) has been pressed, to a server (5) via the data link unit (9) and to establish a video / audio stream to the server (5), wherein the server (5) is adapted to establish a video / audio stream between the server (5) and a user device (7) of a resident of an apartment in the multi-family building (1) who lives in the apartment whose doorbell (25) has been pressed, so that communication between the communication unit (4) and the user device (7) is enabled, wherein the server (5) includes a database that contains assignments between a) user devices and b) doorbells or residents, wherein the server (5) is adapted to determine, upon receipt of corresponding doorbell information,to which user device a video / audio stream should be established.

Description

[0001] The invention relates to a system and method for installing a doorbell and intercom system with video and remote data transmission functionality for a multi-family building. The invention also relates to a connection component, a control unit for the system, and a computer program for the control unit. Furthermore, the invention relates to a system for a multi-family building for remote video and data transmission to a user device.

[0002] German patent application DE 10 2008 017 638 A1 discloses a door intercom unit with an electronic module comprising an analog-to-digital / digital-to-analog converter for video and / or audio signals, wherein the module generates and / or receives data content in a computer unit, which is transmitted by means of a standardized network protocol, in particular an IP network protocol. The data content includes audio data, video data, a ring signal and / or a door opener signal.

[0003] German patent application DE 10 2011 055 741 A1 discloses a communication device for a communication system, in particular for a door intercom system, comprising a connection device for establishing a voice and / or video communication connection with another communication device and a connection circuit via which the communication device can be connected to a doorbell system. The connection circuit is designed such that, in the doorbell system's idle state, the communication device can be powered by a voltage applied to a doorbell button of the doorbell system, and pressing the doorbell button interrupts the power supply.

[0004] German patent application DE 196 31 259 A1 discloses a digital telephone system with multiple handsets that can be interconnected as desired. One of these handsets—the base station—is connected to the public telephone network, while the others—the handsets—are wirelessly connected to the base station. The telephone system includes a door call and door opener system wirelessly connected to the base station. This system comprises a handset as a module, and its doorbell button allows the telephone system to be switched to a "door opening" operating state. In this state, the doorbell signal is routed to all handsets, with the receiving handset triggering a switching connection to the normally open contact of a door opener relay.

[0005] If a multi-family building, such as a house with several rental apartments, is to be equipped with a doorbell and intercom system with video and data transmission capabilities to mobile communication devices, it is generally necessary to replace an existing system without video and data transmission functionality with a new system that does. This complete replacement is often not possible in the building's entrance area due to structural reasons and is also costly.

[0006] It is therefore an object of the present invention to enable the installation of a doorbell and intercom system with video and remote data transmission functionality for a multi-family building without having to replace an existing system without video and remote data transmission functionality.

[0007] The problem is solved by a system for installing a doorbell and intercom system with video and remote data transmission functionality for a multi-family building according to claim 1, wherein the system comprises: - a communication unit with a camera, a microphone and a loudspeaker, wherein the communication unit is adapted to be mounted on an outside of the multi-family building in the area of ​​an existing doorbell and intercom system, - a connection and linking component for connecting to the existing doorbell and intercom system, wherein the connection and linking component has an electrical circuit comprising several connection elements for looping into several circuits of several doorbells of the existing doorbell and intercom system, so that when a doorbell is pressed, this can be detected via the respective connection element, - a data link unit for establishing a video and data connection, and - a control unit that is adapted to send doorbell information, indicating which doorbell has been pressed, to a server via the data connection unit based on detection carried out by the connection and linking component, and to establish a video / audio stream to the server, wherein the server is adapted to establish a video / audio stream between the server and a user device, such as a mobile phone, of a resident of an apartment in the multi-family building, who lives in the apartment whose doorbell has been pressed, so that communication between the communication unit and the user device is enabled.

[0008] The connection component therefore has an electrical circuit comprising several connection elements for insertion into the circuits of multiple bells of the existing doorbell and intercom system, so that when a bell is pressed, this can be detected via the respective connection element. Based on detection by the connection component, the control unit also sends bell information, indicating which bell has been acknowledged, to the server via the data connection unit and establishes a video / audio stream to the server. The server, in turn, establishes a video / audio stream between itself and the user device of the resident of the apartment in the multi-family building whose bell was pressed, thus enabling communication between the communication unit and the user device.The system therefore allows for relatively simple integration into an existing doorbell and intercom system without video and data transmission functionality. In particular, it is not necessary to replace the existing system without video and data transmission functionality with a new system that does. The existing doorbell and intercom system without video and data transmission functionality can continue to be used without any restrictions. After installation of the doorbell and intercom system with video and data transmission functionality, the only visible external change is the communication unit with the camera, microphone, and speaker, which is mounted on the exterior of the multi-family building in the area of ​​the existing system. This communication unit could also be referred to as the front panel.

[0009] In the phrase "video and data transmission functionality," the term "data transmission functionality" refers to data that is not video data. This data includes, for example, audio data and other data such as information that signals to the system's control unit that a door should be opened.

[0010] It should be understood that pressing a doorbell button refers to the actuation of the doorbell button. This button can either be an integral part of the doorbell or a separate component associated with it. If the button is a separate component, then the doorbell and the button are on the same doorbell circuit.

[0011] The user device is preferably a mobile communication device such as a smartphone, a laptop, an iPad, etc.

[0012] The term "video / audio stream" refers to a stream that transmits video and audio signals. The stream can also be adapted to transmit additional data.

[0013] It is preferred that the connection component includes a connection element for connecting to a door opener of the existing doorbell and intercom system to open a door of the multi-family building, wherein the control unit is adapted to receive a door opening signal from the user device via the server and data connection unit and to open the door using the connection component and the door opener when the control unit has received a door opening signal. The connection component can therefore also be easily electrically connected to the existing door opener of the multi-family building, so that the door opener can be operated via the user device. This functionality can also be provided without impairing the function of the existing doorbell and intercom system, which also uses the door opener.The existing system will remain in place alongside the new functionality, as described above.

[0014] The connection component preferably includes a unit that ensures no short circuit occurs at the door opener if current is also applied to it from another point within the existing door locking system. This increases the system's safety. Specifically, the unit can include a changeover switch that prevents current generated by the existing door locking system for the purpose of opening the door from being passed on to the door opener if a communication link has already been established between the communication unit and the user device. This prevents a short circuit caused by simultaneous activation of the door opener from different locations. Establishing the communication link means enabling communication between the communication unit and the user device via the server.

[0015] It is preferred that the changeover switch has a first and a second switching state. In the first switching state, the changeover switch is configured to allow the door to be opened from another location, e.g., using an existing door opener in the user's apartment, via the existing door locking system, if no communication connection with the user device can be established, e.g., because the user has switched off the user device. This first switching state is preferably the default state, meaning that the changeover switch is always in this default state without further control. Once the communication connection with the user device has been established, the changeover switch is configured to interrupt the connection between the existing door locking system and the door opener and instead establish a connection to the connection element to allow the door to be opened by the user device.In a preferred embodiment, the changeover switch can be implemented as a relay with a two-pole changeover switch.

[0016] It is further preferred that the control unit has two terminals that can be connected to a push button, which can be mounted on the outside of the entrance door in addition to the existing doorbell system. The control unit is configured to detect a concierge signal when this button is pressed and then establish a video / audio stream to the server. The server is configured to establish a video / audio stream between itself and the concierge service of the multi-unit building, thus enabling communication between the communication unit and the concierge service. In many situations in a multi-unit building, it is desirable that no resident be notified, for example, when a mail carrier simply wants to deliver mail to interior mailboxes.For such cases, a concierge service may be in place to handle these kinds of requests, which are not specifically directed at a resident. It is therefore advantageous if such a service can be retrofitted using the concierge button.

[0017] It is further preferred that the connection elements and the electrical circuitry of the connection component for looping into multiple circuits of several bells of the existing doorbell and intercom system are designed such that looping into a bell circuit can be carried out by cutting a bell wire of the circuit and then connecting the two ends to two contact points of a corresponding connection element of the connection component. The connection elements of the connection component for looping into multiple circuits of several bells of the existing doorbell and intercom system are preferably plug-in terminals.This leads to a further simplification of the integration of the system into an existing doorbell and intercom system without video and remote data transmission functionality, so that the video and remote data transmission functionality can be added to the existing system without affecting the functionality of the existing system.

[0018] It is further preferred that the connection component has a connection element for connecting to another connection component, so that several connection components can be connected in series, wherein the further connection component has an electrical circuit that has several connection elements for looping into several circuits of several further bells of the existing bell and intercom system, so that when one of the further bells is pressed, this can be detected via the respective connection element, wherein the further connection component is designed to transmit bell information indicating which further bell has been pressed to the connection component, which in turn informs the control unit which further bell has been pressed.This allows for easy scalability because, if additional residents of the multi-unit building wish to use the new functionalities, it is sufficient to connect a new connection component to the existing one and integrate the new component into the circuits of the new residents' doorbells. In particular, it is then unnecessary to connect the new connection component to the control unit, as the new connection component is read via the existing one. Therefore, it is also unnecessary to provide a connection component for each multi-unit building with a number of doorbell connections equal to the number of doorbells in the building.Several connection components can be used, each with a relatively small number of connection elements for doorbells, and a desired number of these connection components can be connected in series. For example, a connection component can have 16 connection elements for 16 doorbells, and for a multi-family building with 128 apartments, 8 of these connection components can be connected in series.

[0019] Preferably, the connection component is configured to: a) assign a number to each connection element; b) if a bell activation is detected via one of the connection elements, output the corresponding number via an output to be connected to the control unit or another connection component; and c) if a number indicating the activation of a bell connected to another connection component is received via an input, this number is added to another number, and the resulting sum is output. The additional number is preferably greater than or equal to the number of connection elements of the connection component for the bells.

[0020] It is preferred that the communication unit also includes a light element, the control unit being adapted to control the light element so that it illuminates while a video image is being transmitted from the communication unit to the user device. The light element is preferably an LED light that indicates the transmission of a video image. This allows a person who has pressed the doorbell to be notified that a video image of that person is now being sent to the resident of the apartment to whom the doorbell is assigned.

[0021] It is further preferred that the connection component includes a connection element for connecting to the existing power supply of the existing doorbell and intercom system, so that the control unit receives electrical power from the existing power supply of the existing doorbell and intercom system via the connection component. It is also preferred that the control unit is adapted to supply the communication unit and the data connection unit with electrical power. Therefore, no additional electrical power supply needs to be provided for installing a doorbell and intercom system with video and remote data transmission functionality, since the existing electrical power supply for the existing doorbell and intercom system can be used.This installation is further simplified by the fact that only the connection component needs to be connected to the existing power supply of the existing doorbell and intercom system. The control unit is powered via this connection component, and the other system components are powered via the control unit. Therefore, only a single component needs to be connected to the existing components of the existing doorbell and intercom system to install a doorbell and intercom system with video and remote data transmission functionality.

[0022] The connection component can have one connection element for connecting to a DC power supply of the existing doorbell and intercom system and another connection element for connecting to an AC power supply of the existing doorbell and intercom system. This increases compatibility with existing doorbell and intercom systems, as both DC and AC power supplies can be used. Furthermore, the electronic circuitry behind both connections ensures that a sufficiently wide voltage range can be covered.

[0023] It is also preferred that the system includes a battery for supplying electrical energy to the control unit, wherein the battery is connected via the control unit and the connection component to the existing power supply of the existing doorbell and intercom system, wherein the control unit is configured to use electrical energy from the battery when the door opener is activated and a video / audio stream to the server is established and used, and to recharge the battery using the power supply of the doorbell and intercom system when the door opener is not activated and no video / audio stream to the server is established and used. The existing power supply of the existing doorbell and intercom system could be designed solely for the existing system.To compensate for the additional energy consumption of the new functions, a preferred embodiment of the system includes a battery connected to the control unit. Since the battery is charged using the existing power supply of the existing system, it is still unnecessary to provide a separate power supply. This further facilitates the simple installation of the doorbell and intercom system with video and remote data transmission functionality for a multi-unit building. Because the battery is preferably connected directly to the control unit, i.e., not via the connection component, the battery's charging / discharging control can be easily integrated into the control unit, eliminating the need for complex provisions for this control on the connection component.This is particularly advantageous when several connection and linking components need to be connected in series.

[0024] Furthermore, the aforementioned problem is solved by a connection and linking component for a system for installing an intercom system with video and remote data transmission functionality for a multi-family building according to one of claims 1 to 11, wherein the connection and linking component is adapted to be connected to an existing doorbell and intercom system of a multi-family building, wherein the connection and linking component has an electrical circuit that has several connection elements for looping into several circuits of several doorbells of the existing doorbell and intercom system, so that when a doorbell is pressed, this can be detected via the respective connection element.

[0025] Furthermore, the aforementioned problem is solved by a control unit for a system for installing an intercom system with video and remote data transmission functionality for a multi-family building according to one of claims 1 to 11, wherein the control unit is adapted to send a doorbell information indicating which doorbell has been pressed to a server via the data connection unit and to establish a video / audio stream to the server, wherein the server is adapted to establish a video / audio stream between the server and a user device of a resident of an apartment in the multi-family building who lives in the apartment whose doorbell has been pressed, so that communication between the communication unit and the user device is enabled.

[0026] A server is also provided for generating a data connection between the communication unit of the system described above and a user device of a resident of an apartment in the multi-family building, wherein the server is adapted to receive ring information from the system indicating which doorbell has been pressed, to establish a video / audio stream to the system, to identify the resident's user device based on the received ring information, and to establish a video / audio stream between the server and the identified user device, thus enabling communication between the communication unit of the system and the user device.

[0027] Furthermore, a user device such as a smartphone is provided for communication with the communication unit of the system described above, whereby the user device is adapted in such a way that an audio / video stream can be established between the server and the user device, thus enabling communication between the communication unit and the user device.

[0028] The aforementioned problem is also solved by a system for remote video and data transmission to a user device, wherein the system comprises a) a doorbell and intercom system without video and data transmission functionality and b) a system according to any one of claims 1 to 11, wherein the connection component is connected to the doorbell and intercom system, and wherein the connection elements of the electrical circuit of the connection component are looped into several circuits of several bells of the doorbell and intercom system, so that when a bell is pressed, this can be detected via the respective connection element. The server described above could also be considered part of this system. Likewise, the user device described above could be considered part of this system.

[0029] The above-mentioned problem is also solved by a method for installing an intercom system with video and remote data transmission functionality for a multi-party building using the system according to one of claims 1 to 11, wherein the method comprises: - Mounting the communication unit with camera, microphone and speaker on an exterior side of the multi-family building in the area of ​​an existing doorbell and intercom system, - Connecting the connection and linking component to the existing doorbell and intercom system, whereby several connection elements are looped into several circuits of several doorbells of the existing doorbell and intercom system, so that when a doorbell is pressed, this can be detected via the respective connection element, and - Connecting the communication unit, the connection and linking component, the data linking unit and preferably an accumulator of the system to the control unit of the system.

[0030] Preferably, the method further comprises connecting the connection and linking component to the power supply of the existing doorbell system, wherein different connections exist for direct or alternating voltage, and connecting the connection and linking component to the door opener of the existing door system via a further connection element of the connection and linking component.

[0031] A method for communication between a doorbell and intercom system with video and remote data transmission functionality for a multi-family building and a user device of a resident of an apartment in the multi-family building is also presented, the method comprising: - Detect, if a bell of an existing bell and intercom system of the multi-family building is activated, which bell has been activated, by means of a connection and linking component connected to the existing bell and intercom system according to claim 12, - Transmitting ring information, indicating which doorbell has been pressed, from the control unit of the system described above to the server described above, - Identifying the resident's user device based on the doorbell information received by the server, - Establishing a video / audio stream between the server and the control unit and between the server and the identified user device, so that communication is enabled between a communication unit of the system according to one of claims 1 to 11 and the user device.

[0032] Furthermore, the aforementioned problem is solved by a computer program for a control unit according to claim 13, wherein the computer program comprises program code means that cause the control unit to send ring information indicating which doorbell has been pressed to a server via the data link unit and to establish a video / audio stream to the server, wherein the server is adapted to establish a video / audio stream between the server and a user device of a resident of an apartment in the multi-family building who lives in the apartment whose doorbell has been pressed, so that communication between the communication unit and the user device is enabled when the computer program is executed on the control unit.

[0033] The server may be provided with a computer program, wherein the computer program includes program code means that cause the server to receive ring information from the system indicating which doorbell has been pressed, to establish a video / audio stream to the system, to identify the resident's user device based on the received ring information, and to establish a video / audio stream between the server and the identified user device, so that communication between the system's communication unit and the user device is enabled when the computer program is executed on the server.

[0034] A computer program may also be provided for a user device, wherein the computer program includes program code means that cause the communication device to establish an audio / video stream between the server and the user device, so that communication between the communication unit and the user device is enabled when the computer program is executed on the user device.

[0035] It should be understood that the system according to claim 1, the connection and linking component according to claim 12, the control unit according to claim 13, the system according to claim 14, the method for installation according to claim 15 and the computer program for the control unit according to claim 16 have similar and / or identical preferred embodiments as defined in particular in the dependent claims.

[0036] In the following, embodiments of the invention are described with reference to the following figures, wherein Fig. Figure 1 schematically and exemplarily shows a multi-family building with a doorbell and intercom system with video and remote data transmission functionality, a server and user devices, Fig. Figure 2 schematically and exemplarily shows a system for installing a doorbell and intercom system with video and remote data transmission functionality for a multi-family building, Fig. Figure 3 schematically and exemplarily shows a front panel of the system for installing an intercom system with video and data transmission functionality for a multi-family building, Fig. Figure 4 schematically and exemplarily shows a circuit of a bell system of an existing bell and intercom system of a multi-family building, Fig. Figure 5 schematically and exemplarily shows an electrical circuit of a connection and linking component of the system for installing a doorbell and intercom system with video and remote data transmission functionality, Fig. Figure 6 schematically and exemplarily shows a graphical user interface of a user device, Fig. Figure 7 shows an exemplary flowchart illustrating an embodiment of a method for installing a doorbell and intercom system with video and remote data transmission functionality for a multi-family building, and Fig. Figure 8 shows an exemplary flowchart of an embodiment of a method for communication between a doorbell and intercom system with video and remote data transmission functionality for a multi-party building and a user device of a resident of an apartment in the multi-party building.

[0037] Fig. Figure 1 schematically and exemplarily shows a multi-family building 1, such as an apartment building with several residential units, where the multi-family building 1 originally only comprised a doorbell and intercom system 3 without video and data transmission functionality. The multi-family building 1 has been upgraded by means of a system for installing a doorbell and intercom system with video and data transmission functionality, whereby this system is in Fig. Figure 1 shows a communication unit 4, which could also be called a front panel. The system for installing a doorbell and intercom system with video and remote data transmission functionality is described below with reference to Fig. 2 described.

[0038] Fig. Figure 2 shows schematically and by way of example components of System 24 for installing a doorbell and intercom system with video and remote data transmission functionality. System 24 comprises the front panel 4 with a camera 27, a microphone 28, a loudspeaker 29, and a light element 30, which is preferably an LED light. The front panel 4 is also shown by way of example and schematically in Figure 2. Fig. 3 shown. This front panel 4 is adapted to be mounted on the outside of the multi-family building 1 in the area of ​​the doorbell and intercom system 3.

[0039] System 24 also includes a connection component 12 for connecting to the doorbell and intercom system 3, wherein the connection component 12 has an electrical circuit comprising several connection elements 14 for looping into several circuits 15-25-13 of several doorbells 25, each with a push button 13 of the doorbell and intercom system 3, so that when a push button 13 is pressed, this can be detected via the respective connection element 14. This looping is shown schematically and by way of example for a doorbell 25 with a doorbell switch or push button 13 in Fig. 2 shown. This looping process will be discussed below taking into account the Fig. 4 and Fig. 5 described.

[0040] Fig. Figure 4 schematically and exemplarily shows a bell system 40 of the bell and intercom system 3 before the loop-through connection. The bell and intercom system 3, that is, the bell system 40 of the bell and intercom system 3, has a power supply 15, that is, an electrical power supply 15, and several bells 25, each with an associated switch 13. The bells 25 with the switches 13 are each connected in series.

[0041] In Fig. Figure 5 shows the connection component 12 after it has been inserted into the circuits of the bells 25 with the switches 13. For insertion, the respective circuit 15-25-13 was cut, and the ends of the cut circuit were connected to a corresponding connection element 14, which is preferably a plug-in element. Inserting the connection component 12 into the existing bell and intercom system 3 can therefore be carried out very easily by cutting the respective circuit 15-25-13 and connecting the resulting ends of the bell wire to the respective plug-in terminal 14.

[0042] Within the connection component 12, the bell currents pass through signal converters 40, which convert the detected current into a binary signal: 1 for "live" and 0 for "not live". For example, if the connection component 12 is designed for 16 bells and thus comprises 16 connection elements 14 and 16 signal converters 40, 16 binary signals are generated for the individual bells. These signals are aggregated in an I / O port expander 16 and then fed to a microcontroller 18, which forwards the information about which bell was pressed via a level translator 22 to input / output jacks 23. From there, the information is transmitted via a connecting cable to the control unit 10.The input / output sockets 23 are used to connect the connection and linking component 12 to the control unit 10 and to another connection and linking component which is constructed in the same way as the connection and linking component 12.

[0043] The connecting cable between the control unit 10 and the connection component 12 also transmits information about whether the door opener should be activated from the control unit 10 to the connection component 12. From there, it passes via the level converter 22 to the microcontroller 18, which in turn controls a circuit that activates the door opener. This circuit consists of a driver 19 and a relay 20, which closes a circuit so that the door opener, connected via the terminal element 21, is energized and thus activated. The connection component 12 also preferably includes a unit that ensures that no short circuit occurs at the door opener if current is also supplied to it from another point in the existing door locking system.This unit can, for example, be implemented as a two-pole relay changeover switch that connects the door opener of the existing door locking system either to the door opening devices already present in the apartment as part of the existing door locking system or to the electrical circuit via connection element 21, so that the door opener can be controlled by the user device. This prevents current from being supplied to the door opener simultaneously by the existing door locking system (triggered by existing door opening devices) and by the connection component (triggered by a user device). Preferably, the unit is in a state in which the door opener can be actuated by the door opening devices of the existing door locking system.In this preferred embodiment, the unit is configured to allow door opening via the connection element 21 only when a communication link has been established between the communication unit and the user device. For example, the control unit 10 can be configured to control the unit accordingly. For clarity, the unit is not shown in [reference missing]. Fig. 5 shown.

[0044] The connection component 12 also contains an AC / DC converter 17 and, in parallel, a DC / DC converter, which is not shown here for clarity. Depending on the type of supply voltage 15 of the existing doorbell system, one of the two converters must be connected to this supply voltage 15 via the corresponding connectors on the housing of the connection component 12. The supply voltage is then converted from converter 17 to 5 V DC and passed on to the microcontroller 18, and from there to all other components of the connection component. Furthermore, the supply voltage is also passed on to the control unit 10 via output socket 23 (and from there to all other components of the system 24).

[0045] System 24 further includes a data connection unit 9 for establishing a data connection to a server 5, for example, via the internet. System 24 also includes a control unit 10, which can also be considered a central unit with a microprocessor. Based on detection by the connection component 12, the control unit 10 is configured to send doorbell information, indicating which doorbell 25 has been pressed, to the server 5 via the data connection unit 9 and to establish a video / audio stream to the server 5. The server 5 is configured to establish a video / audio stream between the server 5 and a user device 7 belonging to a resident of an apartment in the multi-family building 1, specifically the apartment whose doorbell 25 has been pressed. This enables communication between the front panel 4 and the user device 7.The connection component 12 also includes a connection element 21 for connecting to a door opener to open a door 2 of the multi-family building 1. The control unit 10 is configured to receive a door opening signal from the user device 7 via the server 5 and the data connection unit 9, and to open the door 2 using the connection component 12 and the door opener when the control unit 10 has received a door opening signal. Software has been installed on the user device 7 for this purpose, providing a graphical user interface that can display a video image transmitted to the user device 7 via the video / audio stream from the camera 27 of the front panel 4.The graphical user interface also includes an element 30 which, when touched, causes the software to send a door opening signal from the user device 7 to the control unit 10 in parallel with the video / audio stream. The control unit 10 is adapted to control the light element 30 of the front panel 4 so that it illuminates when a video image is transmitted from the front panel 4 to the user device 7.

[0046] The connection component 12 also includes a connection element for connecting to the power supply of the doorbell and intercom system 3, so that the control unit 10 receives electrical energy via the connection component 12 from the power supply of the doorbell and intercom system 3, i.e., from the power supply 15 of the doorbell and intercom system 3. The control unit 10 is also adapted to supply the front panel 4 and the data connection unit 9 with electrical energy. The system 24 also includes a battery 11 for supplying the control unit 10 with electrical energy, the battery 11 being connected to the power supply 15 of the doorbell and intercom system 3 via the control unit 10 and the connection component 12.The control unit 10 is configured to use electrical energy from the battery 11 when the door opener is activated and a video / audio stream to the server 5 has been established. The control unit 10 is also configured to charge the battery 11 using the power supply 15 of the doorbell and intercom system 3 when the door opener is not activated and no video / audio stream to the server 5 has been established.

[0047] The connection component 12 can have a connection element 26 for connecting to another connection component, so that several connection components can be connected in series, wherein the further connection component has an electrical circuit comprising several connection elements for looping into several circuits of several further bells of the doorbell and intercom system. Therefore, when one of the further bells is pressed, this can be detected via the respective connection element of the further connection component, wherein the electrical circuits of the connection components are designed such that electrical signals from the further connection component are transmitted to the control unit 10 via the connection component 12, which is connected to the control unit 10.

[0048] The further connection and linking component is connected via the output of its input / output sockets 23 to the input socket of the input / output sockets 23 of that connection and linking component, which in turn is connected via the output socket of its input / output sockets 23 to the control unit 10.

[0049] The bell numbers reported by the additional connection component, for example, in the range 0-15 (assuming the additional connection component is designed for 16 bells), are first incremented by 16 in the microcontroller of the first connection component and then output to the control unit. This ensures that bell numbers 0-15 are those connected to the first connection component, and numbers 16-31 are those connected to the additional connection component. Adding 16 in this example ensures that the bell numbers of each subsequent connection component are distinct from the bell numbers of the preceding connection components and can be uniquely assigned in the control unit 10.This mechanism allows any number of connection components to be connected in series while still ensuring that the doorbells are uniquely assigned by the control unit 10. The door opener is connected exclusively to the first connection component 12.

[0050] Server 5 is configured to determine, based on the doorbell information received from control unit 10, which user device should receive a video / audio stream. For this purpose, Server 5 preferably includes a database that contains mappings between a) user devices and b) doorbells or residents. Using this database, Server 5 can determine, upon receiving corresponding doorbell information, which user device should receive a video / audio stream. Fig. Figure 1 shows three user devices 6, 7, 8 schematically and exemplarily, where in this example the server 5 has determined, based on the received ring information and with the help of the database, that the video / audio stream should be established to the user device 7.

[0051] The following describes a procedure for installing an intercom system with video and remote data transmission functionality for a multi-family building, with reference to Fig. 7 described. In step 101, the front panel 4 with the camera 27, the microphone 28, and the loudspeaker 29 is attached to the outside of the multi-family building 1 in the area of ​​the doorbell and intercom system 3. In step 102, the connection component 12 is connected to the doorbell and intercom system 3, with several connection elements 14 being looped into several circuits of several doorbells 25 with their switches 13 of the doorbell and intercom system 3, so that when a doorbell button 13 is pressed, this can be detected via the respective connection element 14. Furthermore, the supply voltage of the existing doorbell and intercom system 3 is connected to the connection component 12, with different connections for DC and AC voltage, and finally, the door opener of the existing system 3 is also connected to the connection 21 of the connection component 12.In step 103, the communication unit 4, the connection and linking component 12, the data linking unit 9, and the accumulator 11 of system 24 are connected to the control unit 10 of system 24. Furthermore, any additional connection and linking components 12 that may be required are connected to the preceding connection and linking component 12. These steps can also be performed in a different order.

[0052] The following describes an embodiment of a method for communication between an intercom system with video and remote data transmission functionality in a multi-family building and a user device of a resident of an apartment in the multi-family building, taking into account: Fig. 8 are described as examples.

[0053] In step 201, if a bell 25 of the intercom system 3 of the multi-family building 1 is pressed, the connection component 12, which is connected to the intercom system 3, detects which bell has been pressed. In step 202, bell information indicating which bell 25 has been pressed is transmitted from the control unit 10 to the server 5. Additionally, in this step, a video / audio stream is established from the control unit 10 to the server 5. In step 203, the server 5 identifies the resident's user device 7 based on the received doorbell information, and in step 204, the server 5 establishes a video / audio stream between the server 5 and the identified user device 7, so that a total video / audio stream is created from the control unit 10 to the user device 7, thereby enabling communication between the front panel 4 of the system 24 and the user device 7.

[0054] The system described above allows existing doorbell and intercom systems in multi-family buildings, such as apartment buildings, to be supplemented with a video intercom system, while maintaining the existing infrastructure. This system transmits the camera image from the front door to one or more user devices designated by the tenant, which can be smartphones, at any location, enabling communication between the front door and the user device. Furthermore, it is possible to operate the front door opener using the user device.

[0055] The system gives residents, especially tenants, access to this smart home component. They can see who is ringing the doorbell or trying to visit them on their device, regardless of their location, and can speak with them. This information can also be shared with any number of users, for example, all occupants of an apartment. If the resident is at home, this increases convenience, as they no longer need to go to their own intercom. This is particularly important for tenants with disabilities. It enhances their sense of security, as they now know who wants to visit them, even if they are not at home. Daily life is simplified, as, for example, after contact has been made, the delivery service can be asked to leave the package with a neighbor, or children without house keys can at least be allowed into the building.To upgrade multi-family buildings with a doorbell and intercom system lacking video and remote data transmission capabilities to one with video and remote data transmission functionality, all known systems require a complete replacement of the existing system. Integration into existing systems is not possible. Furthermore, administering a doorbell and intercom system with video and remote data transmission is relatively complex with known systems, especially in large apartment buildings with high tenant turnover, as it must be done on-site at the building entrance.

[0056] In contrast, the System 24 described above allows the existing door intercom system, i.e., the doorbell and intercom system in the doorway, to be retained. This system is supplemented on the front by a communication unit with a camera, specifically a webcam, a microphone, and a speaker for communication with the residents' devices. A connection to the resident is established when the respective doorbell is pressed. Doorbell signals from the existing intercom system are intercepted and recognized, and a communication link is then established between the door (i.e., the communication unit) and one or more of the residents' devices, in parallel with the operation of the existing intercom system. It also allows the front door to be opened from the user's device.Administration can be carried out relatively easily by, for example, setting up new tenants and adding or deleting user devices on the server. This means, in particular, that the server's database, as described above, is modified accordingly to enable administration.

[0057] The system for installing an intercom system has several parts that are to be installed at the front door, as well as the corresponding software, i.e. the computer program on the server, which is preferably accessed via the Internet and used for administration, whereby the software on the server is also preferably used to establish the communication connections to the user devices of the residents.

[0058] The communication unit, which, as described above, can also be referred to as a front panel, is mounted on the exterior of the multi-family building in the area of ​​the existing doorbell and intercom system and contains a microphone, a loudspeaker, and a video camera for communication between a visitor standing in front of the building and the occupant of an apartment. The front panel preferably also includes, as described above, an LED light that illuminates as soon as a video image is transmitted from the building entrance. Preferably, the individual components of the front panel—that is, the microphone, the loudspeaker, the video camera, and the LED light—are connected to the control unit 10 via a cable harness. The control unit 10 also supplies power to these components.

[0059] The system's connection and linking component is designed for a specific number of doorbells, for example, 16 doorbells, and is integrated into the existing system as described above. Fig.Figure 2 illustrates this using a single doorbell as an example, where, for loop-through connection, one contact of each doorbell button is routed through the connection and linking component. The connection and linking component detects the current flowing through the respective doorbell circuit. When the doorbell button, i.e., switch 13, is not pressed, the current flowing is essentially 0 mA. At most, a few leakage currents may be present. As soon as a doorbell button is pressed, current flows through the respective doorbell, the doorbell button itself (i.e., the switch or button), and the connection and linking component. The connection and linking component detects the current and reports the number of the pressed doorbell button to the control unit.The connection component also includes, as described above, a control unit for the door opener, with the corresponding control signal preferably being supplied by the control unit 10, which is connected to the connection component. The connection component is preferably powered by a direct connection to the power supply of the existing system. The connection component preferably provides a connection point for another connection component, and by connecting, for example, eight connection components in series, each with connection points for 16 doorbells, building systems with up to 128 apartments can be served.

[0060] The control unit 10 evaluates the signals from the connection component 12. As soon as the connection component 12 reports that a doorbell button has been pressed, the control unit 10 transmits the doorbell data via the data connection element 9 (e.g., an external communication device such as an LTE modem) to the central server 5 via the internet and establishes a video / audio stream to the server 5. The server 5 then forwards the stream to the user device of the respective resident. The doorbell rings on the resident's device, allowing them to answer the call and speak with the person at the door. The image from the front door camera then appears on the resident's device. The software on the user device is preferably implemented as an app.

[0061] The resident can use their device to open the door by pressing a control button within the app. The corresponding signal is sent from the device via the server to the control unit 10 and from there to the connection component 12. This component then activates the door opener with the appropriate current, allowing the door 2 to be opened. For power, the control unit 10 is connected to the power supply of the existing doorbell and intercom system 3 via the connection component 12. The control unit, in turn, supplies power to the front panel 4 and the data connection unit 9. Since the operation of the data connection unit 9 and the activation of the door opener require more power than the power supply 15 of the existing doorbell and intercom system can typically provide, an additional battery 11 is included.When no activity is taking place, it is constantly recharged from the power supply 15 of the existing doorbell and intercom system 3.

[0062] The system described above can be installed in parallel with an existing door intercom system 3, maintaining its full functionality. This makes participation in the new system optional and voluntary for residents, particularly tenants. Specifically, by tapping into the doorbell signals, the video intercom system can be integrated into the existing door intercom system 3, resulting in high acceptance among the residents of the multi-family building. Furthermore, no new power supply is required, as the existing power supply of the door intercom system 3 can be used. Temporarily higher power levels can be supplied by the battery, which is also powered by the existing power supply of the door intercom system 3.Furthermore, the visual impact on the existing architecture is minimal, as only the front panel 4 needs to be attached externally. The entire system is administered via the central server 5, which can be located anywhere on the internet, thus eliminating the need for on-site administration.

[0063] The ring signals from the existing doorbell and intercom system 3 are therefore routed through the connection component 12 to detect whether someone has rung the bell. For this purpose, the connection component 12 preferably has push-in terminals, so that the existing doorbell wires only need to be cut and the two ends inserted into the terminals. This allows the existing doorbell and intercom system 3 to continue to be used. A separate, new doorbell and intercom system is not required.

[0064] Furthermore, as described above, the door opener can be triggered in parallel to the existing system using a current from the new system 24. This connects the corresponding output 21 of the connection component 12 to the existing door opener, while maintaining the existing door opener control. The old door intercom and door opener system thus remains fully functional.

[0065] As described above, the new units are powered by the existing doorbell system. A separate power supply is therefore not necessary. The electronics of the connection component 12 can have different inputs for AC or DC power supply within the voltage ranges typical for doorbell systems. Furthermore, as also described above, an additional battery is provided, since operating the additional electronics with control unit, data connection unit, and for activating the door opener in case of activation requires more power than an existing power supply, in particular a doorbell transformer, can typically supply to the existing doorbell and intercom system 3.Preferably, this accumulator is charged from the existing low-power power supply of the existing doorbell and intercom system 3 during standby operation of the added components and provides sufficient power for the simultaneous operation of the individual components of the system 24 when in use. As also described above, the connection and linking components are designed so that they can be connected in series, for example to connect up to 128 doorbells.

[0066] Although certain voltage and current values ​​are shown in the figures and certain values ​​are also mentioned in the description above, other values ​​can also be used.

[0067] In the claims, the word "comprehensive" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality.

[0068] A single unit or component can fulfill the functions of several units or components mentioned in the claims. The mere fact that certain measures are mentioned in different, dependent claims does not preclude the possibility of combining these measures to one's advantage.

[0069] Methods such as identifying the resident's user device based on the received doorbell information by the server, establishing a video / audio stream, providing a graphical user interface, etc., can be implemented as program code elements of a computer program and / or as dedicated hardware. In particular, the server, the user device, and the control unit preferably comprise corresponding program code elements of a computer program.

[0070] A computer program can be stored on a suitable medium, such as an optical storage medium or a solid-state medium. It can be provided together with or as part of other hardware. However, it can also be provided in other forms, such as via the internet or other wired or wireless telecommunications systems.

[0071] All reference numerals in the claims should not be interpreted as limiting the scope of protection.

[0072] The invention relates to a system for installing a doorbell and intercom system with video and remote data transmission functionality for a multi-family building. A communication unit with a camera, a microphone, and a loudspeaker is mounted on the exterior of the multi-family building in the area of ​​an existing doorbell and intercom system, and a connection component is connected to the existing doorbell and intercom system. The connection component has an electrical circuit comprising several connection elements for looping into multiple circuits of several doorbells of the existing doorbell and intercom system, so that when a doorbell is pressed, this can be detected via the respective connection element.A data link unit establishes a video and data connection to a server, and a control unit, based on detection by the connection component, sends doorbell information indicating which doorbell has been pressed to the server via the data link unit. The control unit also establishes a video / audio stream to the server, which in turn establishes a video / audio stream between itself and a user device belonging to a resident of the apartment whose doorbell has been pressed in the multi-unit building, thus enabling communication between the communication unit and the user device.

Claims

[1] System for installing a doorbell and intercom system with video and data transmission functionality for a multi-family building, wherein the system (24) is designed to be integrated into an existing doorbell and intercom system in such a way that it is extended by a video / audio stream to a user device of a resident of an apartment in the multi-family building (1) without affecting the functionality of the existing doorbell and intercom system, and wherein the system (24) comprises: - a communication unit (4) with a camera (27), a microphone (28) and a loudspeaker (29), wherein the communication unit (4) is adapted to be installed on an outside of the multi-family building (1) in the area of ​​an existing doorbell and intercom system (3), - a connection and linking component (12) for connecting to the existing bell and intercom system (3), wherein the connection and linking component (12) has an electrical circuit comprising several connection elements (14) for looping into several circuits (15) of several bells (25) of the existing bell and intercom system (3), so that when a bell (25) is pressed, this can be detected via the respective connection element (14), - a data link unit (9) for establishing a video and data connection, - a control unit (10) adapted to send, based on detection by the connection and linking component (12), a doorbell information indicating which doorbell (25) has been pressed, to a server (5) via the data link unit (9) and to establish a video / audio stream to the server (5), wherein the server (5) is adapted to establish a video / audio stream between the server (5) and a user device (7) of a resident of an apartment in the multi-family building (1) who lives in the apartment whose doorbell (25) has been pressed, so that communication between the communication unit (4) and the user device (7) is enabled, wherein the server (5) includes a database that contains assignments between a) user devices and b) doorbells or residents, wherein the server (5) is adapted to determine, upon receipt of corresponding doorbell information,to which user device a video / audio stream should be established. [2] System according to claim 1, characterized by , that the connection and linking component (12) has a connection element (21) for connecting to a door opener of the existing doorbell and intercom system for opening a door (2) of the multi-family building (1), wherein the control unit (10) is adapted to receive a door opening signal via the server (5) and the data link unit (9) from the user device (7) and to open the door (2) by means of the connection and linking component (12) and the door opener when the control unit (10) has received a door opening signal. [3] System according to claim 2, characterized by, that the connection and linking component (12) also includes a unit that ensures that no short circuit is produced at the door opener if current is also supplied to the door opener from another point by the existing door closing system. [4] System according to claim 3, characterized by , that the unit includes a changeover switch, wherein the changeover switch prevents current from being supplied to the door opener by the existing door locking system for the purpose of opening the door when a communication link has already been established between the communication unit (4) and the user device (7). [5] System according to one of the preceding claims, wherein the control unit has two terminals that can be connected to a push button which can be mounted on the outside of the entrance door in addition to the existing doorbell system, and is adapted to detect a concierge signal when this push button is pressed and to establish a video / audio stream to the server (5), wherein the server (5) is adapted to establish a video / audio stream between the server (5) and a concierge service of the multi-family building (1), so that communication between the communication unit (4) and the concierge service (7) is enabled. [6] System according to any one of the preceding claims, characterized by, that the connection elements (14) and the electrical circuit of the connection and linking component (12) for looping into several circuits (15-25-13) of several bells (25) of the existing bell and intercom system (3) are designed such that looping into a circuit (15-25-13) of a bell (25) is possible by cutting a bell wire of the circuit (15-25-13) and then connecting the two ends with two contact points of a corresponding connection element (14) of the connection and linking component (12). [7] System according to any one of the preceding claims, characterized by, that the connection and linking component (12) has a connection element (26) for connecting to another connection and linking component, so that several connection and linking components can be connected in series, wherein the further connection and linking component has an electrical circuit which has several connection elements for looping into several circuits of several further bells of the existing bell and intercom system, so that when one of the further bells is pressed, this can be detected via the respective connection element, wherein the further connection and linking component is designed in such a way that it transmits bell information indicating which further bell has been pressed to the connection and linking component (12), which in turn informs the control unit (10) which further bell has been pressed. [8] System according to any one of the preceding claims, characterized by , that the connection and linking component (12) is adapted to a) assign a number to each connection element (14), b) if a bell activation has been detected via one of the connection elements (14), output the corresponding number via an output to be connected to the control unit (10) or another connection and linking component, and c) if a number indicating the activation of a bell connected to the other connection and linking component is received via an input from a connected further connection and linking component, add this number to another number and output the resulting sum via the output. [9] System according to any one of the preceding claims, characterized by, that the connection and linking component (12) has a connection element for connecting to an existing power supply of the existing doorbell and intercom system (3), so that the control unit (10) receives electrical energy via the connection and linking component (12) from the existing power supply (15) of the existing doorbell system (3). [10] System according to claim 9, characterized by , that the control unit (10) is adapted to supply electrical energy to the communication unit (4) and the data link unit (9). [11] System according to one of claims 9 and 10, characterized by, that the system (24) also includes an accumulator (11) for supplying the control unit (10) with electrical energy, wherein the accumulator (11) is connected via the control unit (10) and the connection and linking component (12) to the existing power supply (15) of the existing doorbell and intercom system (3), wherein the control unit (10) is adapted to use electrical energy from the accumulator (11) when the door opener is activated and a video / audio stream to the server (5) is established and used, and to recharge the accumulator (11) using the power supply (15) of the doorbell system (3) when the door opener is not activated and no video / audio stream to the server (5) is established and used. [12] A connection and linking component for a system for installing an intercom system with video and data transmission functionality for a multi-family building according to any one of claims 1 to 11, wherein the connection and linking component (12) is adapted to be connected to a doorbell and intercom system (3) of a multi-family building in such a way that it is extended by a video / audio stream to a user device (7) of a resident of an apartment in the multi-family building (1) without affecting the functionality of the existing doorbell and intercom system, wherein the connection and linking component (12) has an electrical circuit which has several connection elements (14) for looping into several circuits (15-25-13) of several doorbells (25) of the existing doorbell and intercom system (3), so that when a doorbell (25) is pressed, this can be detected via the respective connection element (14).[13] A control unit for a system for installing an intercom system with video and data transmission functionality for a multi-family building (1) according to any one of claims 1 to 11, wherein the control unit (10) is adapted to send ring information indicating which doorbell (25) has been pressed to a server (5) via the data connection unit (9) and to establish a video / audio stream to the server (5), wherein the server (5) is adapted to establish a video / audio stream between the server (5) and a user device (7) of a resident of an apartment in the multi-family building (1) who lives in the apartment whose doorbell (25) has been pressed, so that communication between the communication unit (4) and the user device (7) is enabled, wherein the server (5) comprises a database that has assignments between a) user devices and b) doorbells or residents, wherein the server (5) is adaptedUpon receiving a corresponding ring signal, the system determines which user device should be used to establish a video / audio stream. [14] System for remote video and data transmission to a user device, the system comprising: - a doorbell and intercom system (3) without video and data transmission functionality, - a system according to one of claims 1 to 11, wherein the connection and linking component (12) is connected to the bell and intercom system (3), wherein the connection elements (14) of the electrical circuit of the connection and linking component (12) are looped into several circuits (15) of several bells (25) of the bell and intercom system (3), so that when a bell (25) is pressed, this can be detected via the respective connection element (14). [15] Method for installing an intercom system with video and data transmission functionality for a multi-family building using the system according to any one of claims 1 to 11, wherein the system is integrated into an existing doorbell and intercom system in such a way that it is extended by a video / audio stream to a user device of a resident of an apartment in the multi-family building without affecting the functionality of the existing doorbell and intercom system, and wherein the method comprises: - Attaching the communication unit (4) with the camera (27), the microphone (28) and the loudspeaker (29) to an outside of the multi-family building (1) in the area of ​​an existing doorbell and intercom system (3), - Connecting the connection and linking component (12) to the bell system (3), wherein several connection elements (14) are looped into several circuits (15-25-13) of several bells (25) of the bell system (3), so that when a bell (25) is pressed, this can be detected via the respective connection element (14), and - Connecting the communication unit (4), the connection and linking component (12), the data link unit (9) of the system (24) to the control unit (10) of the system (24). [16] Computer program for a control unit according to claim 13, wherein the computer program comprises program code means that cause the control unit (10) to send ring information indicating which bell (25) has been pressed to a server (5) via the data link unit and to establish a video / audio stream to the server (5), wherein the server (5) is adapted to establish a video / audio stream between the server (5) and a user device (7) of a resident of an apartment in the multi-family building who lives in the apartment whose bell (25) has been pressed, so that communication between the communication unit (4) and the user device (7) is enabled when the computer program is executed on the control unit (10), wherein the server (5) comprises a database that has mappings between a) user devices and b) bells or residents, wherein the server (5) is adaptedUpon receiving a corresponding ring signal, the system determines which user device should be used to establish a video / audio stream.

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