CN202976266U

CN202976266U - Visual intercom access control system and multifunctional terminal thereof

Info

Publication number: CN202976266U
Application number: CN 201220583536
Authority: CN
Inventors: 李俊红
Original assignee: SHENZHEN TIANXINGJIAN ELECTRONICS CO Ltd
Current assignee: SHENZHEN TIANXINGJIAN ELECTRONICS CO Ltd
Priority date: 2012-11-08
Filing date: 2012-11-08
Publication date: 2013-06-05
Anticipated expiration: 2022-11-08

Abstract

The utility model relates to a visual intercom access control system and a multifunctional terminal thereof. The visual intercom access control system comprises an outdoor visual intercom access controller and the multifunctional terminal, wherein the multifunctional terminal comprises a main control unit, a wired telephone circuit, a touch screen device, a microphone/earphone, a hands-free microphone, a hands-free loudspeaker, a buzzer and a first wireless transmission module; the wired telephone circuit, the touch screen device, the microphone/earphone, the hands-free microphone, the hands-free loudspeaker, the buzzer and the first wireless transmission module are connected with the main control unit; and the outdoor visual intercom access controller is connected with a second wireless transmission module; in the multifunctional terminal, both an access control audio signal and a telephone audio signal can be acquired by the microphone/earphone and/or the hands-free microphone and are output by the microphone/earphone and/or the hands-free loudspeaker; and the access control video signal can be output and displayed by the touch screen device. By adopting the visual intercom access control system, the purposes of achieving the audio and video communication with the outdoor visual intercom access controller and answering and calling are achieved by using only one multifunctional terminal, so that the equipment cost is reduced, the office space is saved and the system is convenient to operate.

Description

Visual talkback access control system and multifunctional terminal thereof

Technical Field

The utility model relates to an entrance guard and communication system, more specifically say, relate to a visual access control system of talkbacking and multi-functional terminal thereof.

Background

In a common micro company, a telephone and an access control system are necessary communication equipment, and a clerk is responsible for answering and operating the communication equipment. At present, the entrance guard is installed on a wall at a doorway, a clerk must walk to the doorway to operate, and the entrance guard cannot talk with visitors although a plurality of products are provided with door-opening remote controllers, so that inconvenience is brought to the clerk operation. The situation that people come to the market is actually caused, and potential safety hazards are brought to companies. Some wireless visual entrance guard that talkbacks have solved this problem, but wireless visual entrance guard system indoor set has again taken up partly area of clerk's desk, adds the telephone of placing on the desk for office environment is more crowded. In order to reduce the space occupation and the repeated part of the equipment, it is necessary to combine the telephone and the indoor unit of the video intercom access control into one equipment.

The prior art also has the problem that when the clerk is not in the seat, no one is responsible for opening the door, causing some trouble.

In a family residence, telephone and visual intercom access control systems are also very popular in application, and the indoor units of the intercom systems are generally arranged on the wall of a doorway, so that a lot of inconvenience is brought to users, particularly in a community with closed management, guests need to get up many times to visit the community, enter the community once for a large door, get up again for a building door, and get up again for a home door. It is inconvenient for people in a room to go to a toilet or bed.

There is a need for a more convenient way to address these problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a technical problem who solves lies in, must set up an independent indoor set to visual access control system among the prior art for the inconvenient or occupation space's of user operation defect provides a visual access control system that talkbacks, and indoor set wherein is integrated as a multi-functional terminal with the visual telephone.

The utility model discloses another technical problem who solves lies in, must set up an independent indoor set to visual access control system among the prior art for the inconvenient or occupation space's of user operation defect provides a multifunctional terminal, and it both can carry out audio frequency and video communication with outdoor visual entrance guard controller of talkbacking, can answer, dial the phone again.

The utility model provides a technical scheme that its technical problem adopted is: the visual talkback access control system comprises an outdoor visual talkback access control device, an indoor door opening button and an electric door lock, wherein the outdoor visual talkback access control device is provided with a micro-processing unit; the micro-processing unit is connected with a camera, a microphone, a loudspeaker, an identity recognition device, a keyboard and a doorbell button, and is electrically connected with the indoor door opening button and the electric door lock;

the visual intercom access control system also comprises a multifunctional terminal; wherein, the multi-functional terminal includes: the system comprises a main control unit, and a wired telephone circuit, a touch screen device, a telephone/earphone, a hand-free microphone, a hand-free loudspeaker and a buzzer which are connected with the main control unit; the main control unit is also connected with a first wireless transmission module for wireless communication with the outdoor visual intercom access controller; and is

And a micro-processing unit of the outdoor visual intercom access control device is connected with a second wireless transmission module used for communicating with the multifunctional terminal.

In the video intercom access control system of the present invention, the system comprises a router and a smart phone, wherein the smart phone is provided with a WLAN wireless transmission module, and the main control unit of the multifunctional terminal comprises an access call transfer module for transferring an access call to a target telephone through a communication network and/or for transferring an access call to a target smart phone in a wireless local area network environment through a Wireless Local Area Network (WLAN); the main control unit is connected with a memory for storing the telephone number of the entrance guard call forwarding target telephone and/or the MAC address or IP address of the entrance guard call forwarding target smart phone.

In the video intercom access control system of the present invention, including a router and a smart phone, the smart phone is provided with a WLAN wireless transmission module, the main control unit of the multifunctional terminal includes an incoming call transfer module for transferring an incoming call to a target telephone through a communication network and/or for transferring an incoming call to a target smart phone in a wireless local area network environment through a Wireless Local Area Network (WLAN); the main control unit is connected with a memory for storing the telephone number of the incoming call forwarding target telephone and/or the MAC address or the IP address of the incoming call forwarding target smart phone.

In the video intercom access control system of the present invention, the main control unit of the multifunctional terminal includes an audio signal switching module, and the main control unit is connected to an audio signal channel switching device, so that when the telephone/headset or the hands-free microphone and the hands-free speaker are occupied by the first voice communication, the audio signal of the second voice communication is switched to the hands-free microphone and the hands-free speaker or the telephone/headset based on the instruction sent by the audio signal switching module of the main control unit;

wherein,

the first voice communication is wired telephone communication, and the second voice communication is entrance guard talkback communication; or

The first voice communication is entrance guard intercom communication, and the second voice communication is wired telephone communication.

Visual entrance guard's system of talkbacking in, first wireless transmission module and second wireless transmission module are based on the wireless transmission module of 802.11b or 802.11n agreement for be in based on 802.11b or 802.11n agreement outdoor visual entrance guard's controller of talkbacking with transmission audio signal, video signal and control signal between the multi-functional terminal.

The utility model provides a technical scheme that its technical problem adopted is: a multi-function terminal is constructed comprising: the system comprises a main control unit, a wired telephone circuit, a touch screen device, a telephone/earphone, a hand-free microphone, a hand-free loudspeaker and a buzzer, wherein the wired telephone circuit, the touch screen device, the telephone/earphone, the hand-free microphone, the hand-free loudspeaker and the buzzer are connected with the main control unit; the master control unit is also connected with a first wireless transmission module which is used for wirelessly communicating with an outdoor visual intercom access controller.

In the multi-function terminal according to the present invention,

the main control unit comprises an entrance guard call transfer module which is used for transferring entrance guard calls to a target telephone through a wired telephone communication network and a mobile communication 3G network and/or used for transferring entrance guard calls to a target smart phone in a Wireless Local Area Network (WLAN) environment through a Wireless Local Area Network (WLAN); the main control unit is connected with a memory for storing the telephone number of the entrance guard call forwarding target telephone and/or the MAC address and/or the IP address of the entrance guard call forwarding target smart phone; and

the main control unit comprises an incoming call transfer module, a target intelligent mobile phone and a call forwarding module, wherein the incoming call transfer module is used for transferring an incoming call to a target telephone and/or a target intelligent mobile phone in a Wireless Local Area Network (WLAN) environment through a wired telephone communication network, a mobile communication 3G network and/or the WLAN; the main control unit is connected with a memory for storing the telephone number of the incoming call forwarding target intelligent mobile phone and/or the MAC address and/or the IP address of the incoming call forwarding target intelligent mobile phone.

In the multifunctional terminal of the present invention, the main control unit includes an audio signal switching module, and the main control unit is connected to an audio signal channel switching device, and is configured to switch the audio signal of the second voice communication to the hands-free microphone and speaker or the microphone/earpiece based on the instruction sent by the audio signal switching module of the main control unit when the microphone/earpiece or the hands-free microphone and the hands-free speaker are occupied by the first voice communication;

wherein,

Implement the utility model discloses, following beneficial effect has: the multifunctional terminal adopts the same touch screen to realize the operations of telephone dialing, answering, rejecting, hanging up and the like and the operations of visual talkback, door opening, rejecting, sending and the like, watching videos transmitted by the access controller and the like; the same set of audio system is adopted, so that the audio call of the telephone is realized, and the audio call with the outdoor visual intercom access controller is also realized. By adopting the organic integration mode, the user who originally needs two sets of equipment can meet the requirements only by purchasing one set of equipment, thereby saving the fund and the office space. In addition, the indoor unit of the video intercommunication is moved to the desktop from the wall of the doorway, so that the operation is greatly facilitated.

Additionally, the utility model discloses visual access control system can only pass through the condition of a special indoor set and gate and communication among the prior art, through the switching of multi-functional terminal, and visual entrance guard of talkbacking can realize that visual entrance guard of talkbacking answers, opens the door on the smart mobile phone through network and smart mobile phone communication to solve the visual entrance guard problem of talkbacking when the people is not on the telephone next door.

Furthermore, the utility model discloses must realize through a telephone exchange and fixed extension among the prior art that indoor different places connect to listen or realize indoor removal with the cordless telephone and answer to fixed telephone system, and can not realize indoor removal with the cell-phone and connect to listen or need expensive soft switch server just can realize indoor removal to answer as the extension realizes, multi-functional terminal passes through wireless network and smart mobile phone communication, realize not using the cell-phone to answer the fixed telephone under typical operator's the call transfer function condition, thereby provide a simple and convenient scheme as the extension of fixed telephone with the cell-phone.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1a is a schematic structural diagram of an embodiment of the video intercom access control system of the present invention;

fig. 1b is a schematic structural diagram of another embodiment of the video intercom access control system of the present invention;

fig. 2a is a schematic structural diagram of the multifunctional terminal of the present invention;

fig. 2b is a logic diagram of the main control unit in the multifunctional terminal of the present invention;

fig. 3 is a schematic structural view of the outdoor visual intercom access control device and the indoor unit of the present invention;

fig. 4 is a schematic view of an operation interface when the multi-function terminal performs wired telephone communication according to an embodiment of the present invention;

fig. 5 is a schematic view of an operation interface when the multi-function terminal performs wired telephone communication according to an embodiment of the present invention;

fig. 6 is a schematic view of an operation interface of the multifunctional terminal according to an embodiment of the present invention when performing door entry intercom communication;

fig. 7 is a schematic view of an operation interface of the multifunctional terminal according to an embodiment of the present invention, when performing wired telephone communication and door access intercom communication simultaneously.

Detailed Description

The visual intercom access control system of the present invention will now be described with reference to fig. 1a, 2b and 3. As shown in fig. 1a, fig. 2b and fig. 3, the present invention discloses a visual intercom access control system, which includes a multifunctional terminal 200, an outdoor visual intercom access control controller (outdoor unit for short) 100a and an indoor unit (indoor unit for short) 100b of the visual intercom access control system.

The outdoor video intercom access control device 100a is provided with a microprocessor unit (e.g., a CPU/DSP chip) 110, and the microprocessor unit 110 is connected with a digital camera 106, a microphone 107 (via an a/D converter 108), a speaker 103 (via amplifiers 104 and D), an identification device (e.g., an IC card sensing module, a fingerprint recognition module, a retina recognition module, etc.) 112, a keyboard 111, and a doorbell button 109.

The indoor unit 100b of the video intercom access control system has an indoor door-opening button 114, and as shown in fig. 3, the indoor door-opening button 114 is electrically connected to the microprocessor unit 110. The indoor unit 100b has an electric door lock decoding circuit 115 and an electric door lock driving circuit 102 in its casing, and the electric door lock 101 (normally installed on the door frame or the door leaf) is electrically connected to the microprocessor 110 through the electric door lock driving circuit 102 and the electric door lock decoding circuit 115. The micro-processing unit 110 is further connected to a second wireless transmission module (e.g., a WIFI wireless transceiver module 113 or a bluetooth wireless transceiver module) for wireless communication with the multi-function terminal 200. The second wireless transmission module is connected with an antenna 118, and the antenna 118 extends out of the casing of the indoor unit 100 b.

The information of the digital camera 106, the microphone 107 (via the a/D converter 108), the speaker 103 (via the amplifiers 104 and D), the identification device (e.g., an IC card sensing module, a fingerprint identification module, or a retina identification module, etc.) 112, the keyboard 111, and the doorbell button 109 are processed by the microprocessor 110 (e.g., a dual-core CPU chip including a DSP and other auxiliary circuits), and then are in communication connection with the multi-function terminal 200 via a second wireless transmission module (e.g., a WIFI wireless transceiver module 113 or a bluetooth wireless transceiver module), so as to implement data transmission.

The multifunction terminal 200 includes a main control unit (e.g., cpu/DSP chip) 220 and peripheral circuits (e.g., amplifiers 15, 17, 18, a/D converters 24, 36, D/a converter 23, etc.), and a wired telephone circuit (which includes an off-hook and on-hook control circuit 10, an ringing circuit 11, a caller id display circuit 12, a dial circuit 13, and an audio circuit 14) connected to the main control unit 220, a touch screen device (which includes a touch screen driving chip 7 and a touch screen 6), a telephone/handset 28 (which includes an earphone 26, a microphone 25, and a permanent magnet 27), a hands-free microphone 22, a hands-free speaker 35, an off-hook and on-hook sensor 19, a buzzer 8, and a memory (e.g., flash ROM 240 and RAM 250). The wire telephone circuit is provided with interface means for connecting telephone subscriber lines.

The main control unit 220 is further connected to a first wireless transmission module (for example, a WIFI wireless transceiver module 230 or a bluetooth wireless transceiver module) for wirelessly communicating with the outdoor video intercom access control controller 100a, so as to transmit audio signals, video signals and control signals.

The wired telephone circuit (which includes the off-hook and on-hook control circuit 10, the ringing circuit 11, the incoming call display interface circuit 12, the dialing circuit 13 and the audio circuit 14), the touch screen device (which includes the touch screen driving chip 7 and the touch screen 6), the telephone/receiver 28 (which includes the earphone 26, the microphone 25 and the permanent magnet 27), the hands-free microphone 22, the hands-free loudspeaker 35 and the off-hook and on-hook sensor 19 are processed by the main control unit (for example, the dual-core CPU chip containing the DSP) 220 and other auxiliary circuits, and then are in communication connection with the outdoor visual door access controller through the first wireless transmission module (for example, the WIFI wireless transceiver module 230 or the bluetooth wireless transceiver module), so as to realize data transmission.

In the multifunctional terminal 200, both the entrance guard audio signal and the telephone audio signal are collected by a telephone/earphone and/or a hands-free microphone and output through a telephone/earphone and/or a hands-free speaker; and the access control video signal is output and displayed through the touch screen device.

The main control unit 220 is also connected with an audio signal channel switching device, which comprises 4 multi-way analog switches 20, 21, 29 and 30. Four multi-way analog switches, a first multi-way analog switch 29 being operable to route audio output by the wired telephone circuit to either the handset (speaker therein) or the hands-free speaker, depending on the configuration of its switch position; the second multi-way analog switch 30 can be used for transmitting the audio signal collected by the telephone/earphone (the microphone therein) or the hands-free microphone to the wired telephone circuit as the audio input to the wired telephone circuit; the third multi-channel analog switch 21 can be used for transmitting the audio signal (processed by the main control unit) from the visual intercom access controller to the telephone/earphone or the hands-free speaker; the fourth multi-channel analog switch 20 is configured to send an audio signal collected by a microphone/receiver (a microphone therein) or a hands-free microphone to the main control unit 220, and after the audio signal is processed by the main control unit, the audio signal is transmitted to the outdoor visual intercom access controller through the first wireless transmission module (e.g., the WIFI wireless transceiver module 230 or the bluetooth wireless transceiver module). In addition, based on the configuration of the switch position, the first to fourth multi-path analog switches are combined, so that the audio signal from the visual intercom access control device (collected by the microphone 107 and transmitted by the second wireless transmission module and the first wireless transmission module) can be transmitted to the wired telephone circuit after being processed by the main control unit 220, and is used as the audio input to the wired telephone circuit; and the audio output from the wired telephone circuit (after being processed by the main control unit) is transmitted to the outdoor visual intercom access control device 100a through the first wireless transmission module and the second wireless transmission module, and then is processed by the micro-processing unit 110 and played through the loudspeaker 103.

The main control unit 220 includes an audio signal switching module 221, which may be implemented by software and/or hardware circuits. The main control unit combined with the audio signal channel switching device can select the audio signal channel according to the instruction of a user (for example, selecting a telephone/earphone channel, a hand-free microphone and speaker channel and a telephone recording channel); the main control unit combined with the audio signal channel switching device can also switch the audio signal of the later door control talkback communication to the hands-free microphone and the hands-free loudspeaker or the telephone/earphone when the telephone/earphone or the hands-free microphone and the hands-free loudspeaker are occupied by the wired telephone communication; the main control unit combined with the audio signal channel switching device can also switch the audio signals of the subsequent wired telephone communication to the hand-free microphone and the hand-free loudspeaker or the telephone/earphone when the telephone/earphone or the hand-free microphone and the hand-free loudspeaker are occupied by entrance guard talkback communication.

The main control unit 220 includes an entrance guard call transfer module 223 for transferring an entrance guard call to a target smart phone through a mobile communication network, and is connected with a memory (e.g., a flash ROM 240 or a RAM 250) for storing a phone number of the entrance guard call transfer target smart phone. The main control unit 220, in combination with the memory, may perform an entrance guard call forwarding operation based on a preset telephone number (stored in the memory) of an entrance guard call forwarding destination telephone when receiving an entrance guard call request and no response signal, so as to perform remote entrance guard intercom communication; or, when receiving the access control call request and the call transfer instruction, performing access control call transfer operation based on the MAC address and/or the IP address of the target smart phone to perform remote access control intercom communication.

The main control unit 220 includes a buzzer control module 225 and is connected with a buzzer 8, which sets a set of logic such that when the multifunctional terminal is making a call using the hands-free speaker 35, the hands-free microphone (22) or the telephone/handset, if a person presses the button of the doorbell 109, a ringing will be sent out through the buzzer. Or when the multifunctional terminal is carrying out visual talkback with the visual talkback access controller, if a telephone call exists, ringing can be sent out through the buzzer.

The main control unit 220 includes an incoming call transfer module 227 for transferring an incoming call to a target smart phone through a wireless lan (802.11 b/802.11g/802.11n, etc.), and a memory (e.g., a flash ROM 240 or a RAM 250) for storing a MAC address and/or an IP address of the access control call transfer target smart phone is connected to the main control unit. The main control unit 220, in combination with the memory, may perform an incoming call forwarding operation based on a preset MAC address or IP address (stored in the memory) of the incoming call forwarding target smartphone when receiving an incoming call and no answer signal; or, in the case of receiving an incoming call, when receiving a call forwarding request of the smartphone, receiving the call forwarding request of the smartphone to forward the incoming call to the MAC address and/or IP address of the requestor (i.e., the smartphone that sent the call forwarding request), and then performing an incoming call forwarding operation. Or when receiving a transfer instruction input by an operator through a touch screen, transferring the incoming call to the MAC address or the IP address specified by the transfer instruction to perform the incoming call transfer operation.

Although fig. 2b only shows four modules included in the main control unit 220, namely, the audio signal switching module 221, the entrance guard call forwarding module 223, the buzzer control module 225 and the incoming call forwarding module 227, as known to those skilled in the art, the main control unit 220 is not limited to include the above modules, and may further include an audio signal processing module, a video signal processing module, a control signal processing module, a plurality of input/output (I/O) ports, and the like.

In an embodiment of the present invention, the communication based on bluetooth protocol is realized between the multifunctional terminal 200 and the outdoor video intercom access controller 100a through bluetooth technology to transmit audio, video and control signals, as shown in fig. 1 a. In this embodiment, the first wireless transmission module and the second wireless transmission module are both bluetooth modules.

As shown in fig. 1b, in another embodiment of the present invention, the communication between the multi-function terminal 200 and the outdoor video intercom access controller 100a is implemented based on 802.11b or 802.11n protocol through WIFI, so as to transmit audio, video and control signals. In this embodiment, the first wireless transmission module and the second wireless transmission module are both WIFI modules. As shown in fig. 1b, the video intercom access control system includes a multifunctional terminal 200, an outdoor video intercom access control (outdoor unit) 100a, a video intercom access control (indoor unit) 100b, a router 400 and a target smart phone 500. The target smartphone 500 is provided with a mobile communication module and a WLAN wireless transmission module, and is installed with a phone switching application program and/or a video intercom application program. For example, as shown in fig. 1b, in an embodiment of the present invention, a call transfer application button icon 512 and a visual intercom application button icon 514 are displayed on the operation interface of the target smartphone 500.

In this embodiment, the main control unit 220 also includes the audio signal switching module 221, the buzzer control module 225, the entrance guard call forwarding module 223, and the incoming call forwarding module 227. The memory (e.g., the flash ROM 240 or the RAM 250) to which the main control unit 220 is connected stores a phone number of the entrance call transfer target smartphone and/or a MAC address of the entrance call transfer target smartphone. The entrance guard call transfer module in the main control unit is used for transferring entrance guard calls to the target smart phone through a mobile communication network and/or a Wireless Local Area Network (WLAN). In the present invention, the mobile communication network may include a 3G network of mobile communication such as WCDMA, CDMA200, TD-SCDMA, etc. The main control unit 220 and the access control call forwarding module 223 are combined with the memory, so that when receiving an access control call request and having no response signal, the access control call forwarding operation can be performed based on a preset telephone number (stored in the memory) of an access control call forwarding target telephone, so as to perform remote access control talkback communication; or when receiving the access control calling request and no response signal, performing access control calling transfer operation based on a preset MAC address and/or IP address (stored in a memory) to perform remote access control talkback communication; or after receiving the access control call request, the multifunctional terminal receives the call transfer request of the smart phone, and the multifunctional terminal receives the call transfer request of the smart phone to transfer the access control call to the MAC address or the IP address of the target smart phone to carry out access control call transfer operation; or when the multifunctional terminal receives the access control calling request, the operator sends a calling transfer instruction on the touch screen, the multifunctional terminal receives the calling transfer instruction and transfers the access control calling to the MAC address or the IP address of the specified smart phone according to the instruction requirement of the calling transfer instruction so as to carry out access control calling transfer operation, so that remote access control talkback communication is carried out; or when receiving an incoming call and no response signal, the multifunctional terminal performs incoming call forwarding operation based on the preset MAC address or IP address of the intelligent mobile phone of the incoming call forwarding target; or after receiving the incoming call, the multifunctional terminal receives a call forwarding request of the smart phone, and the multifunctional terminal receives the call forwarding request of the smart phone to forward the incoming call to the MAC address or the IP address of the target smart phone to carry out incoming call forwarding operation; or after the multifunctional terminal receives the incoming call request, the operator inputs a call transfer instruction through the touch screen, the multifunctional terminal receives the call transfer instruction and transfers the incoming call to the MAC address or the IP address of the specified smart phone according to the instruction requirement of the call transfer instruction to carry out entrance guard call transfer operation so as to carry out remote entrance guard talkback communication.

For example, in an embodiment, after the multifunctional terminal receives the call information of the video intercom access controller, a person can manually operate the multifunctional terminal, a "call forwarding instruction" is sent to the video intercom access controller through the first wireless transmission module, the "call forwarding instruction" includes the MAC address of the target smart phone, the access controller directly turns to the target smart phone to perform TCP connection after receiving the call forwarding instruction, a corresponding video intercom application program is arranged on the target smart phone to communicate with the access controller, and video intercom, short-message, refusal, door opening and other actions are performed on the smart phone.

In another embodiment, after the multi-functional terminal receives the call information of the video intercom access controller, a certain target smart phone which is registered in a group on the multi-functional terminal can send a call forwarding application command to the multi-functional terminal through an application program, after receiving the call forwarding application command, the multi-functional terminal can send the call forwarding command to the video intercom access controller through the wireless transmission module, the call forwarding command contains the MAC address of the target smart phone, the access controller directly turns to connect with the smart phone through TCP after receiving the call forwarding application command, a corresponding APP application program is arranged on the smart phone to communicate with the access controller, and video intercom, door opening and other actions are carried out on the smart phone.

In yet another embodiment, after the multi-function terminal receives a telephone call, a person may manually operate on the multi-function terminal (for example, a transfer button icon may be displayed on a touch screen and the transfer button is touched), initiate establishment of a TCP connection to a target smartphone, which has been group-registered on the multi-function terminal and has installed a telephone transfer application, through the first wireless transmission module, and issue a "transfer call" command to a specific TCP port. After the target smart phone operates the application program on the background and receives the 'transfer call' command, the application program is activated to the foreground to operate, a call application program interface is popped up, the multifunctional terminal establishes a bidirectional voice transmission connection with the smart phone, and the call can be answered on the smart phone.

In another embodiment, no one answers after the multifunctional terminal sends out ringing. But now there is a smartphone that has been registered on the multi-function terminal and that has a dedicated call forwarding application installed. The phone switching application program is opened on the intelligent mobile phone, the mobile phone actively establishes TCP connection with the multifunctional terminal, at the moment, the 'switching' button is pressed on the phone switching application program of the intelligent mobile phone, then, the intelligent mobile phone sends a 'call switching application' command to the multifunctional terminal through the wireless transmission module of the intelligent mobile phone, the multifunctional terminal receives the command, a bidirectional voice transmission connection is established with the intelligent mobile phone according to the current incoming call of the fixed phone, and then the phone is switched to the intelligent mobile phone, like an extension of the fixed phone.

It should be noted that, although the first wireless transmission module and the second wireless transmission module are respectively identified as the WIFI module 230 and the WIFI module 113 in fig. 2a and fig. 3, as mentioned above, the first wireless transmission module and the second wireless transmission module may also be bluetooth modules based on the communication technology/protocol used.

In the technical solution of the present invention, the multifunctional terminal 200 uses the same touch screen device to realize operations related to telephone communication such as dialing, answering, rejecting, hanging up, etc. and operations related to visual intercom such as visual intercom, opening door, rejecting, waiting, switching, watching video transmitted from outdoor visual intercom access controller; by adopting the same audio system, the audio communication of the telephone can be realized, and the audio communication with the access controller can also be realized. By adopting the organic integration mode, the user who originally needs two sets of equipment can meet the requirements only by purchasing one set of equipment, thereby saving the fund and the office space. The display frequency of the visual talkback is moved from the wall of the doorway to the desktop, so that the operation is greatly facilitated.

The utility model discloses visual access control system that talkbacks's concrete theory of operation as follows:

1. recording telephone set

1) Incoming call

Refer to fig. 2a, 4 and 5. On the multifunction terminal 200, in order to reduce heat generation and save power, the main control unit (e.g., CPU chip) 220 is in a sleep state at ordinary times. In the static case, the multiple analog switches 20, 21, 29 and 30 are all in the "4" position. When there is an incoming call, the number of the incoming call display transmitted first is stored in the latch through the incoming call display interface circuit 12, when the ringing current comes, the ringing current circuit 11 converts the ringing current into a low level signal, an interrupt request is sent to the CPU220, the CPU220 wakes up from a sleep state, displays the incoming call number 201 in the latch on the LCD touch screen 6 through the liquid crystal display driving chip 7, and displays buttons such as "hands-free answer" 202, "reject" 203, "record" 204, "on hook" 205 and the like on the LCD touch screen 6; meanwhile, the CPU220 sets the multi-channel analog switch 21 at the position of '2' through the control pin 37, sends a ringtone data stream to the D/A converter 23 according to a preset ringtone, converts the ringtone data stream into an audio signal through D/A, and enters the adder 34 through the amplification of the amplifier 17 and the resistor R232 to drive the loudspeaker 35 to send the ringtone.

At this point, the operator may pick up the phone/earpiece 28 or press the "hands free answer" button 202 to answer the phone. When the operator picks up the phone/handset 28, the permanent magnet 27 on the handset is clear of the hall sensor (hall sensor) 19 and the hall sensor 19 sends an "off-hook" signal to the CPU chip 220 indicating that the "phone/handset" has been used to listen. At this time, the CPU chip 220 sets the multi-path analog switch 29 to the "1" position through the control pin 38, and sets the multi-path analog switch 30 to the "1" position through the control pin 39; where the output (out) of the audio circuit 14 communicates with the earpiece 26 and the input (in) of the audio circuit 14 communicates with the Microphone (MIC) 25. The screen shows the word "… in call" 206, and when the telephone is answered by the telephone/receiver 28, the audio signal coming from the telephone line is output to the headset 26 via the audio circuit 14, and the local sound is transmitted to the audio circuit via the microphone 25. Thereby realizing normal conversation.

When the telephone/receiver 28 is used for answering, the recording button 204 is pressed, the CPU220 chip sets the multi-channel analog switch 20 at the 1 position through the control pin 33, the CPU220 chip starts the A/D converters 24 and 36 to collect the voice of the operator and the voice transmitted by the calling party, and the voice is compressed and stored in a flash ROM (FLASHROM) 240.

If the operator presses the "hands-free listening" button 202, the CPU chip 220 places the multi-way analog switch 29 in the "2" position via the control pin 38, places the multi-way analog switch 30 in the "2" position via the control pin 39, places the multi-way analog switch 20 in the "4" position via the control pin 33, and places the multi-way analog switch 21 in the "4" position via the control pin 37; the output (out) of the audio circuit 14 is coupled through R1 to the summing amplifier 34 to deliver the audio signal to the hands-free speaker 35, and the input (in) of the audio circuit 14 is in communication with the hands-free microphone 22.

When the user answers in a hands-free mode, the recording button 204 is pressed, the CPU chip 220 places the multi-channel analog switch 20 at the 2 position through the control pin 33, the CPU chip 220 starts the A/D converters 24 and 36 to collect the voice of the user and the voice transmitted by the caller, and the voice is compressed and stored in the FLASHROM 240.

After the operator answers the phone, the phone/receiver 28 can be put back to the "on-hook" state, the Hall Sensor 19 sends an "on-hook" signal to the CPU chip 220, or the "on-hook" button 205 is pressed, the CPU chip 220 sends an "on-hook" signal to the off-hook and on-hook control circuit 10, and the off-hook and on-hook control circuit 10 controls the impedance of the phone to be in the "on-hook" state, thereby completing the on-hook action.

If the opposite side is on-hook during the conversation, the line transmits a hang-up sound, the CPU220 recognizes the sound and can find that the sound is on-hook, and drives the touch screen driving chip 7 and the LCD touch screen 6 to display that the opposite side is on-hook.

The on-hook multi-way analog switches 20, 21, 29 and 30 are all in the "4" position.

2) Dialing telephone

When no talkback doorbell signal is transmitted, or the phone/receiver 28 is picked up, the permanent magnet steel 27 on the receiver leaves the Hall sensor 19, an off-hook interrupt request is sent to the CPU220, the CPU220 ends the sleep state, and the picture in fig. 5, a dial pad 501, a "call" button 502, a "handsfree" button 503, a "delete" button 504, a phone call 505, and the like are displayed on the LCD touch screen 6 through the touch screen driving chip 7. Meanwhile, the CPU chip 220 turns on the multi-path analog switch 29 to the '1' position through the control pin 38, turns on the multi-path analog switch 30 to the '1' position through the control pin 39, places the multi-path analog switch 20 to the '4' position through the control pin 33, and places the multi-path analog switch 21 to the '4' position through the control pin 37; where the output (out) of the audio circuit 14 communicates with the earpiece 26 and the input (in) of the audio circuit 14 communicates with the MIC 25.

An operator inputs a telephone number to be dialed on the keypad 501, presses the "call" key 502, and the CPU220 outputs the number to the dial circuit 13, and outputs DTMF dual tone multi-frequency dial tone to the telephone line. After the number is dialed, if the opposite side is busy, a busy tone is returned, if the called side is idle, a dial tone is returned, and the audio signal drives the earphone 26 to send out a busy tone or a dial tone through the audio circuit 14 and the multi-path analog switch 29; when the called party goes off-hook, the screen shown in fig. 4 is displayed.

The operator may also select to display the screen of fig. 7, dial pad 501, "call" button 502, "hands free" button 503, "delete" button 504, etc., by clicking the touch screen "phone" button. The CPU220 chip turns the multiplex analog switch 29 to the "2" position through the control pin 38, turns the multiplex analog switch 30 to the "2" position through the control pin 39, turns the multiplex analog switch 20 to the "4" position through the control pin 33, and turns the multiplex analog switch 21 to the "4" position through the control pin 37, and the operator can talk to the called party through the hands-free speaker 35 and the hands-free microphone 22. The reason for placing the multi-way analog switch 21 in the "2" position is that if a person presses the doorbell, a ringing tone will be emitted through the hands-free speaker 35.

The call and recording process and interface are the same as the incoming call answering, and are not described again.

3) Switching to mobile phone with wireless transmission module in wireless local area network

In the first case, no one answers after the multifunctional terminal rings. But now there is a smartphone that has been registered on the multi-function terminal and that has a dedicated call forwarding application installed. An operator opens a call transfer application program on the smart phone, so that the smart phone actively establishes TCP connection with the multifunctional terminal, at the moment, the call transfer application program of the smart phone presses a transfer button, then, the smart phone sends a transfer command to the multifunctional terminal through a wireless transmission module of the smart phone, the multifunctional terminal receives the command, establishes bidirectional voice transmission connection with the smart phone according to the current incoming call of the fixed phone, and transfers the call to the smart phone as an extension of the fixed phone. The operation process of receiving and hanging up the telephone is not described again.

In the second case, the operator already answers the call on the multifunctional terminal, but the call is for someone indoors, and the operator can press the call for switching on the phone application program interface of the multifunctional terminal to find the target smart phone and select to press the target smart phone. The multi-function terminal actively establishes a TCP connection with the smartphone and issues a "transfer call" command to a specific TCP port. After the application program running on the smart phone in the background receives the 'transfer call' command, the application program is activated to run in the foreground, a call application program interface is popped up, the multifunctional terminal establishes a bidirectional voice transmission connection with the smart phone, and the call can be answered on the smart phone. The operation process of receiving and hanging up the telephone is not described again.

2. Visual intercom access control system

1) Call and answer

In the static case, the multi-way analog switches 20, 21, 29 and 30 on the multi-function terminal 200 are all in the "4" position.

When a guest arrives at the door, a doorbell button 109 of the outdoor video intercom access control 100a is pressed, an interrupt application is sent to the micro-processing unit (e.g., CPU) 110, the CPU 110 responds to the interrupt application and sends a doorbell signal to a set IP address through the WIFI module 113, and the set IP address is the IP address corresponding to the multifunctional terminal 200. Meanwhile, the a/D converter 108, the D/a converter 105, and the digital camera 106 are started, and audio and video signals of the MIC 107 and the digital camera 106 are compressed and then sent to the IP address corresponding to the WIFI module 230 through the WIFI module 113. The CPU220 of the multi-function terminal receives the message through the WIFI module 230, the CPU220 finishes the sleep state, displays "someone visits" 301, and "hands-free talk" button 302, "open door" button 303, "wait for" button 304, "reject" button 305, etc. on the LCD touch screen 6 through the touch screen driving chip 7, places the multi-channel analog switch 21 at the "2" position through the control pin 37, and sends a set ring tone to the hands-free speaker 35 through the D/a converter 23, the amplifier 17, and the multi-channel analog switch 21. And the received image 306 is decompressed and displayed on the LCD touch screen 6 as shown in fig. 6.

The visual intercom access control automatically sounds the same tone as the dial tone of the telephone before the operator picks up the phone/earpiece 28 or presses the "hands free talk" button 302.

If the operator picks up the phone/receiver 28, the CPU chip 220 senses an off-hook signal through the HALL SENSOR 19, and sends an "off-hook" message to the IP address corresponding to the WIFI module 113 through the WIFI module 230, and stops ringing. At this time, the CPU220 chip places the multi-way analog switches 20, 21 in the "1" position via the control pins 33 and 37, places the multi-way analog switches 29, 30 in the "4" position via the control pins 38 and 39, and the output of the amplifier 17 is communicated with the earphone 26 and the input of the amplifier 18 is communicated with the MIC 25. The a/D converter 24 is started, and the audio signal of the MIC25 is sent to the IP address corresponding to the WIFI module 113 through the WIFI module 230 after digital quantization compression. The CPU 110 receives an "off-hook" message from the multi-function terminal through the WIFI module 113, decompresses the received audio compression data, sends the decompressed audio compression data to the speaker 103 through the D/a converter 105 and the signal amplifier 104, and emits a sound. The CPU220 of the multifunctional terminal receives the audio data stream from the video intercom access controller through the WIFI module 230, the audio data stream is decompressed and sent to the earphone 26 through the D/A converter 23 and the amplifier 17, and the received video data stream is decompressed by the CPU220, processed and sent to the LCD touch screen 6 through the touch screen driving chip 7 to display images.

After two-party conversation, if the other party is allowed to enter, the "open door" button 303 on the touch screen is pressed, the "open door" data is transmitted to the CPU220 through the touch screen driving chip/circuit 7, the CPU220 sends the "message" to the IP address corresponding to the multifunctional terminal through the first wireless transmission module (for example, the WIFI module 230), the CPU 110 of the visual intercom access controller receives the message through the second wireless transmission module (for example, the WIFI module 113), and the electric door lock 101 is driven to operate through the electric door lock driving circuit 102, so that the door lock is opened. The CPU 110 drives the speaker 103 to issue a "welcome visit" through the D/a converter 105 and the amplifier 104. "sound of.

The operator operating the multi-function terminal 200 can also realize a dialogue with the video intercom access control 100a by clicking the "hands-free intercom" 302, at which time the CPU220 chip sets the multi-way analog switches 20, 21 to the "2" position through the control pin 33 and the control pin 37, sets the multi-way analog switch 29 to the "4" position through the control pin 38 and the control pin 39, sets the multi-way analog switch 30 to the "4" position, the output of the amplifier 17 is communicated with the resistor R232, and the input of the amplifier 18 is communicated with the MIC 22. Thus, a dialogue with the outdoor visual intercom access controller 100a can be realized through the hands-free speaker 35 and the hands-free MIC 22. The dialog process is identical to the use of the phone/earpiece 28 and will not be described in detail.

If it is inconvenient to talk immediately, the "next" button 304 can be pressed, at which time the CPU220 chip will stop outputting the ring tone. And automatically recording the following voice: "Do not go, busy, ask you for a while later. The "send to the video intercom access control device 100a through the WIFI module 230, the video intercom access control device 100a plays the voice just like receiving the normal call information" no start, busy, please later. ". Meanwhile, the CPU220 chip puts the multi-way analog switches 20 and 21 at the position of '4' through the control pin 33 and the control pin 37, and temporarily cuts off the sound transmission with the visual intercom access controller.

When the user is convenient to talk, the user presses the hand-free talk-back button 302 or picks up the phone/receiver 28, and meanwhile, the CPU and the chip 220 place the multi-way analog switches 20 and 21 at the position of 2 or 1 through the control pin 33 and the control pin 37, so that the normal talk-back in the hand-free mode or the phone/receiver mode is realized. The talk-back process is not described in detail.

If the set 'later time' T is exceeded and the 'later' state is not finished, the CPU220 controls the foot 37 to place the multi-path analog switch 21 at '2' again and send a ring tone, the character 'people visit' in figure 6 flickers, and the 'wrong answer, busy and you ask for the later' are sent once again when the 'later' is pressed each time. The audio data stream is sent to the outdoor video intercom access control device 100 a. If the set "later time" T is exceeded twice in succession without ending the later state, the state will automatically shift to the "no-answer" state described below.

2) No human response

If no one answers after the multifunctional terminal rings, or the operator presses the 'reject' button, after a period of time delay, the CPU chip 220 sends an 'no one answer' message to the outdoor visual intercom access control device 100a through the WIFI module 230, and hangs up. After receiving the message, the CPU chip 110 sends a voice data stream of "no answer, please visit at an alternative time", and drives the speaker 103 to sound through the D/a converter 105 and the amplifier 104.

If the opening of the entrance guard call forwarding function is set on the multi-function terminal, and if no answer is given after the multi-function terminal rings, the CPU220 will send the entrance guard call forwarding telephone number set on the multi-function terminal to the dial circuit 13, and at this time, the CPU chip 220 will place the multi-way analog switches 20 and 21 at the "3" position through the control pins 33 and 37, place the multi-way analog switches 29 and 30 at the "3" position through the control pins 38 and 39, the output of the amplifier 17 will be connected to the input of the audio circuit 14 through the multi-way analog switches 21 and 30, and the input of the amplifier 18 will be connected to the output of the audio circuit 14 through the multi-way analog switches 20 and 29.

The CPU220 automatically extracts a set number from the FLASH ROM 240, outputs the number to the dialing circuit 13 for dialing, the dialing process is the same as the telephone dialing process, an audio signal transmitted by a telephone is transmitted to the amplifier 18 through the audio circuit 14 and is converted into a data stream through the A/D converter (24), the CPU220 is compressed and then transmits the compressed data stream to the WIFI module 230, the WIFI module 230 transmits the compressed data stream to an IP address corresponding to the WIFI module 113, the compressed data stream is decompressed through the CPU 110, the D/A converter 105 converts the compressed data stream, the amplifier 104 amplifies the compressed data stream, and then the loudspeaker (103) is driven to make sound. Conversely, the audio signal transmitted from the outdoor video intercom access controller 100a will be decompressed by the CPU220, sent to the D/a converter 23, passed through the amplifier 17, then transmitted to the audio circuit 14, and transmitted to the telephone line.

In the first case, no one answers after the multifunctional terminal rings. But there is now a smartphone that has been registered on the multi-function terminal and has installed a corresponding visual intercom application. An operator opens the visual talkback application program on the smart phone, so that the smart phone actively establishes TCP connection with the multifunctional terminal, at the moment, the visual talkback application program of the smart phone presses a switching button, so that the smart phone sends a switching command to the multifunctional terminal through the wireless transmission module of the smart phone, the multifunctional terminal receives the command, sends the switching command to the visual talkback access controller through the wireless transmission module of the multifunctional terminal, and sends the IP address and the TCP port number of the smart phone in the local area network to the visual talkback access controller together. After receiving the switching command, the visual talkback access control device actively establishes TCP connection with the smart phone, so that the visual talkback access control device can carry out video call with the smart phone through a local area network, and the application program on the smart phone also provides operations of opening the door, slightly waiting, rejecting and the like which are completely identical to the multifunctional terminal. The operation process is not described in detail.

The second situation is that the operator multi-function terminal has answered, but needs a visitor to talk with someone indoors, and can press the transfer on the visual intercom application program interface of the multi-function terminal to find the target smart phone and choose to press. At the moment, the multifunctional terminal sends a switching command to the visual talkback access controller through the wireless transmission module of the multifunctional terminal, and sends the IP address and the TCP port number of the smart phone in the local area network to the visual talkback access controller together. After receiving the switching command, the visual intercom access control device actively establishes TCP connection with the smart phone, and activates a visual intercom application program running in a background, so that the visual intercom access control device can carry out video conversation with the smart phone through a local area network, and the application program on the smart phone also provides operations of opening a door, slightly waiting, refusing and the like which are completely identical to the multifunctional terminal. The operation process is not described in detail.

3. Cooperation between the two

1) When receiving a call, someone presses the doorbell

The interface for simultaneously listening to video talk and telephone is shown in fig. 7. When the wired telephone communication and the door intercom communication are simultaneously performed, the multifunctional terminal simultaneously displays the door intercom communication operation interface 300 and the wired telephone communication operation interface on the touch screen device, wherein the door intercom communication operation interface comprises a display area for displaying images of visitors captured by a camera of an outdoor visual intercom door controller.

If the phone/receiver 28 is being used to make a call, the multi-way analog switches 29 and 30 are in the "1" position and the multi-way analog switches 20, 21 are in the "4" position. At this time, someone presses the doorbell 109 on the outdoor video intercom access control 100a, the doorbell signal is received by the CPU220, the CPU220 sets the multi-way analog switch 21 at the "2" position through the control pin 37, and the set ring tone is sent to the hands-free speaker 35 through the D/a converter 23, the amplifier 17, and the multi-way analog switch 21. And displays the video image 306 transmitted from the outdoor visual intercom access control device 100a, and buttons such as "hands-free intercom" 302, "open door" 303, "wait" 304, "reject" 305, etc. in the on-screen access intercom communication operation interface 300. The two sets of communication systems are organically combined and do not interfere with each other. If the hands-free talk-back 302 is pressed, the CPU220 automatically selects the hands-free on mode. As described in our article 2 (1), the CPU220 chip now switches the multi-way analog switches 20, 21 to the "2" position via control pins 33 and 37. The operator can press any one of the four buttons "hands-free talk back" 302 "open door" 303 "and" reject "304" later, the operation process is identical to that of item 2, and the description is omitted.

If a call is being made in the hands-free listening mode, the multi-way analog switches 29 and 30 are in the "2" position and the multi-way analog switches 20, 21 are in the "4" position. When a person presses the doorbell 109 on the outdoor visual intercom access control device 100a, the doorbell signal is received by the CPU220, the CPU220 drives the buzzer 8 to make a sound to indicate that the person has visited, and simultaneously, a video image 306 transmitted from the visual intercom access control device 100a appears on the screen, and the person has visited 301 and flickers, and buttons such as "hands-free intercom" 302, "door open" 303, "waiting" 304 "reject" 305 appear on the screen. At this time, the "hands-free talk-back" button 302 is deactivated and becomes gray, and after the operator picks up the handset, the CPU220 chip switches the multi-way analog switches 20, 21 to the "1" position via the control pins 33 and 37. So as to realize the transmission of two paths of signals without mutual interference. Other processes are completely consistent with the above and are not described in detail.

2) When the visual talkback is in conversation, a person comes

The interface for simultaneously listening to video talk and telephone is shown in fig. 7.

If the visual intercom call is being answered by the handset 28, the multi-way analog switches 29 and 30 are in the "4" position and the multi-way analog switches 20, 21 are in the "1" position. When there is a call, the number of the incoming call display transmitted first is stored in the latch through the incoming call display interface circuit 12, when the ringing current comes, the ringing current circuit 11 converts the ringing current into a low level signal, sends an interrupt request to the CPU220, displays the incoming call number 201 (as shown in fig. 4) in the latch on the LCD touch screen 6 through the touch screen driving chip 7, and displays the buttons of "handsfree answer" 202, "reject" 203, "record" 204, "on hook" 205, etc. on the LCD touch screen 6 and displays the prompt message "in call" 206; at the same time, the CPU220 controls the buzzer 8 to sound, indicating that there is a telephone call. The operator pressing "hands-free answering" 202 can answer the call in a hands-free manner, and the answering process will not be described in detail.

If the visual intercom call is being made in the hands-free mode, the multi-way analog switches 29 and 30 are in the "4" position and the multi-way analog switches 20, 21 are in the "2" position. When there is a call, the number of the incoming call display transmitted first is stored in the latch through the incoming call display interface circuit 12, when the ringing current comes, the ringing current circuit 11 converts the ringing current into a low level signal, sends an interrupt request to the CPU220, displays the incoming call number 201 in the latch on the LCD touch screen 6 through the touch screen display driving chip 7, and displays buttons such as "handsfree answer" 202, "reject" 203, "record" 204, "on hook" 205, etc. on the LCD touch screen 6; at the same time, the CPU220 drives the buzzer 8 to sound, indicating that there is a telephone call. The operator picks up the phone/receiver 28 to receive the call, and the answering process is not described in detail.

The utility model discloses a multifunctional terminal has a LCD touch-sensitive screen 6, the wired telephone line, WIFI wireless module 230 to carry out data processing and management coordination by a dual-core CPU220 that has DSP, a LCD touch-sensitive screen 6 of sharing accomplishes the phone dialing, the incoming telegram shows and shows the video that access control ware transmitted, shared phone/earphone 28 and hands-free speaker 35, hands-free MIC 22 accomplishes phone voice duplex transmission, and the voice duplex transmission of visual talkback. When someone visits and presses the doorbell and no person is in the room, the multifunctional terminal can dial the telephone of an operator according to the preset telephone number to realize remote answering.

The multi-channel analog switches 20, 21, 29 and 30 are adopted to carry out intelligent switching under different conditions, so that when a person calls by using a telephone/earphone 28, the person can use a hands-free loudspeaker 35 and a hands-free MIC 22 to communicate with an outdoor visual intercom access controller 100a according to a doorbell 109 on the outdoor visual intercom access controller so as to finish voice communication with a visitor; or when a person calls with the hands-free loudspeaker 35 and the hands-free MIC 22, the person presses the doorbell 109 on the outdoor visual intercom access control device, and can use the telephone/receiver 28 to realize the voice communication with the outdoor visual intercom access control device 100 a; in addition, when the telephone/earphone 28 is in communication with the outdoor visual intercom access controller, a person makes a call, and the hands-free loudspeaker 35 and the hands-free MIC 22 can be used for making a call; when a person is making a call while voice communication is being performed with the outdoor video intercom access control 100a using the hands-free speaker 35 and the MIC 22, the person can make a call using the telephone/handset 28.

The content of the phone answering operation picture and the visual talkback answering operation picture are displayed in different areas by adopting the LCD touch screen 6, so that the operations of answering, refusing, slightly waiting, opening the door and the like of the visual talkback can be completed while the phone call is carried out, and the image transmitted from the outdoor visual talkback access controller 100a can be seen.

The multifunctional terminal adopts a buzzer 8 and sets a set of logic, and when the multifunctional terminal adopts a hands-free loudspeaker 35 and a hands-free MIC 22 to make a call, if a person presses a doorbell button 109, ringing can be sent out through the buzzer. Or when the outdoor visual intercom access controller is carrying out visual intercom, if a telephone call exists, ringing can be sent out through the buzzer.

The utility model discloses a store machine code and/or computer program in the memory of multi-functional terminal, including at least one code section, this at least one code section is executed by multi-functional terminal and CPU wherein to make multi-functional terminal and CPU wherein execute the utility model discloses a communication method.

The communication method comprises the following steps: the utility model discloses a following step is carried out by multi-functional terminal in the visual access control system that talkbacks:

during the first voice communication through the telephone/earphone or through the hands-free microphone and the hands-free loudspeaker, when a request for carrying out second voice communication is received, a reminding sound is sent out through the buzzer, and the second voice communication is carried out through the hands-free microphone and the hands-free loudspeaker or through the telephone/earphone;

wherein,

The utility model discloses a communication method still includes: when receiving the entrance guard calling request and no response signal, the multifunctional terminal carries out entrance guard calling transfer operation based on a preset entrance guard calling transfer telephone number so as to carry out remote entrance guard talkback communication.

The utility model discloses a communication method still includes: when the wired telephone communication and the entrance guard talkback communication are carried out simultaneously, the multifunctional terminal simultaneously displays an entrance guard talkback communication operation interface and a wired telephone communication operation interface on the touch screen device, wherein the entrance guard talkback communication operation interface comprises a display area used for displaying images of visitors captured by a camera of an outdoor visual talkback entrance guard controller.

The utility model discloses conceive of one set of earphone and microphone of making telephone and visual entrance guard's system of talkbacking sharing, visual entrance guard's of talkbacking needs a liquid crystal display, and this liquid crystal display adopts the touch-sensitive screen just can directly regard as the button to use. The method can realize the organic integration of the telephone and the indoor controller of the video intercommunication entrance guard system. The telephone set with the touch screen and the CPU can be added with a plurality of functions, such as recording telephone, address book and the like. The function of the ordinary telephone is greatly enhanced. The entrance guard system connected with the telephone can automatically dial the telephone of the operator when no person is in the room, thereby extending the functions of the entrance guard system. Therefore, the combination of the two systems is not only the stacking of the two systems, but also the improvement of the original functions after the organic combination.

4. Group registration of smart phone on multifunctional terminal

In order to realize the transfer of the incoming call and the video intercom to the smart phone, a group needs to be established on the multifunctional terminal, and information such as the MAC address and the MEID of the smart phone needs to be recorded in the multifunctional terminal so as to carry out identity confirmation under the first condition when the incoming call is transferred; in the second case, the target mobile phone is selected on the multi-function terminal.

The process is called as group registration, and the smart phone with the group registration has a call forwarding function only after a corresponding call forwarding application program and a corresponding visual intercom application program are installed.

Claims

1. A visual talkback access control system comprises an outdoor visual talkback access control device, an indoor door opening button and an electric door lock, wherein the outdoor visual talkback access control device is provided with a micro-processing unit; the micro-processing unit is connected with a camera, a microphone, a loudspeaker, an identity recognition device, a keyboard and a doorbell button, and is electrically connected with the indoor door opening button and the electric door lock;

it is characterized in that the preparation method is characterized in that,

2. The visual intercom access control system as in claim 1, wherein the visual intercom access control system comprises a router and a smart phone, the smart phone is provided with a WLAN wireless transmission module, and the main control unit of the multifunctional terminal comprises an access call transfer module for transferring an access call to a target smart phone in a WLAN environment through a WLAN; the main control unit is connected with a memory for storing the MAC address or the IP address of the entrance guard call transfer target smart phone.

3. The visual intercom access control system as claimed in claim 1, wherein the visual intercom access control system comprises a router and a smart phone, the smart phone is provided with a WLAN wireless transmission module, the main control unit of the multifunctional terminal comprises an incoming call transfer module for transferring an incoming call to a target smart phone in a wireless local area network environment through a wireless local area network WLAN; the main control unit is connected with a memory for storing the MAC address or the IP address of the incoming call transfer target smart phone.

4. A visual intercom access control system as claimed in any one of claims 1 to 3, wherein the main control unit of the multifunctional terminal comprises an audio signal switching module, the main control unit is connected with an audio signal channel switching device, and is used for switching the audio signal of the second voice communication to the hands-free microphone and the hands-free speaker or the telephone/headset based on an instruction sent by the audio signal switching module of the main control unit when the telephone/headset or the hands-free microphone and the hands-free speaker is occupied by the first voice communication;

wherein,

5. A multi-function terminal, comprising: the system comprises a main control unit, a wired telephone circuit, a touch screen device, a telephone/earphone, a hand-free microphone, a hand-free loudspeaker and a buzzer, wherein the wired telephone circuit, the touch screen device, the telephone/earphone, the hand-free microphone, the hand-free loudspeaker and the buzzer are connected with the main control unit; the master control unit is also connected with a first wireless transmission module which is used for wirelessly communicating with an outdoor visual intercom access controller.

6. Multi-function terminal according to claim 5,

the main control unit comprises an entrance guard call transfer module used for transferring entrance guard calls to a target smart phone in a wireless local area network environment through a Wireless Local Area Network (WLAN); the main control unit is connected with a memory for storing the MAC address and/or the IP address of the entrance guard call transfer target smart phone; and

the main control unit comprises an incoming call transfer module used for transferring an incoming call to a target smart phone in a wireless local area network environment through a Wireless Local Area Network (WLAN); the main control unit is connected with a memory for storing the MAC address and/or the IP address of the incoming call transfer target smart phone.

7. The multi-functional terminal according to claim 5 or 6, characterized in that the main control unit includes an audio signal switching module, and the main control unit is connected with an audio signal channel switching device for switching the audio signal of the second voice communication to the hands-free microphone and speaker or the phone/headset based on the instruction sent by the audio signal switching module of the main control unit when the phone/headset or the hands-free microphone and hands-free speaker is occupied by the first voice communication;

wherein,