CN109672842A - Intelligent door real time bidirectional visual-speaking system - Google Patents
Intelligent door real time bidirectional visual-speaking system Download PDFInfo
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- CN109672842A CN109672842A CN201811409488.8A CN201811409488A CN109672842A CN 109672842 A CN109672842 A CN 109672842A CN 201811409488 A CN201811409488 A CN 201811409488A CN 109672842 A CN109672842 A CN 109672842A
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- outdoor
- indoor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention discloses a kind of intelligent door real time bidirectional visual-speaking systems, call is inconvenient when solving the problems, such as in family resident apart from doorway farther out, its key points of the technical solution are that, outdoor unit, including outdoor images acquisition unit, outdoor images output unit, outdoor voice collecting unit, outdoor voice-output unit, outdoor display unit, outdoor phonation unit and wireless communication unit；Mobile terminal, including mobile image acquisition unit, mobile image output unit, mobile voice acquisition unit, mobile voice output unit, mobile display unit and mobile phonation unit, intelligent door real time bidirectional visual-speaking system of the invention, outdoor unit directly to carry out voice and video with mobile terminal to interact, to get rid of the constraint of indoor unit, so that resident is not limited during interacting at home with outdoor visitor by present position, it is more convenient, to save unnecessary trouble.
Description
Technical field
The present invention relates to video intercom technologies, in particular to intelligent door real time bidirectional visual-speaking system.
Background technique
Current era is filled with the epoch of information, and in bidirectional visual conversational system, the transmission of data, which mainly relies on, to be had
Line or the transmission modes such as wireless, are widely used in the access control system of Modern Family.Householder indoors can be by two-way
Visual dialog system is exchanged with visitor outdoors, and carries out identity validation, to improve safety.Now work as applied to family
In bidirectional visual conversational system mainly include be able to carry out voice and video interaction indoor unit and outdoor unit, respectively for interior
Resident and outdoor visitor use, using the bridge linked up as both sides.
However, indoor unit is usually mounted to the indoor position close to security door, indoor resident needs to be moved to doorway ability
Carry out voice and video interaction；Especially householder is in bedroom, the equidistant doorway remote position in toilet, is moved to doorway and opens again
Open that interactive interface is more inconvenient, therefore there is also certain rooms for improvement for existing bidirectional visual conversational system.
Summary of the invention
The object of the present invention is to provide a kind of intelligent door real time bidirectional visual-speaking systems, without indoor resident close to doorway
Indoor unit, just can be interacted with outdoor visitor.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of intelligent door real time bidirectional visual-speaking system, including
Outdoor unit, including outdoor images acquisition unit, outdoor images output unit, outdoor voice collecting unit, outdoor language
Sound output unit, outdoor display unit, outdoor phonation unit and wireless communication unit；
Mobile terminal, including mobile image acquisition unit, mobile image output unit, mobile voice acquisition unit, movement
Voice-output unit, mobile display unit and mobile phonation unit；
The wireless communication unit carries out teledata with mobile terminal and exchanges；
The outdoor images acquisition unit is used to obtain the life outdoor videos image information of outdoor visitor, and by the life outdoor videos
Image information is sent to wireless communication unit by outdoor images output unit；The outdoor that the wireless communication unit will receive
Video image information is remotely sent in the mobile display unit of mobile terminal and is shown；
The mobile image acquisition unit is used to obtain the indoor video image information of indoor resident, and by the interior video
Image information is remotely sent to wireless communication unit by mobile image output unit, and the wireless communication unit will receive
Indoor video image information is sent in outdoor display unit and is shown；
The outdoor voice collecting unit is used to obtain the outdoor voice messaging of outdoor visitor, and by the outdoor voice messaging
Wireless communication unit is sent to by outdoor voice-output unit；The outdoor voice messaging that the wireless communication unit will receive
It is remotely sent to the mobile phonation unit of mobile terminal and voice broadcast is carried out by mobile phonation unit；
The mobile voice acquisition unit is used to obtain the indoor voice messaging of indoor resident, and by the interior voice messaging
Wireless communication unit, the indoor voice that the wireless communication unit will receive remotely are sent to by mobile voice output unit
Information is sent to outdoor phonation unit and carries out voice broadcast by outdoor phonation unit.
Using the above scheme, outdoor unit directly to carry out voice and video with mobile terminal to interact, to get rid of room
The constraint of interior machine, so that resident is not limited during interacting at home with outdoor visitor by present position, it is more convenient,
To save unnecessary trouble.
Preferably, further including that can carry out the indoor unit that voice and video interacts with outdoor unit, the indoor unit includes room
Interior image acquisition units, off-the-air picture output unit, indoor voice collecting unit, indoor voice-output unit, indoor display list
Member and indoor phonation unit, the outdoor unit further includes Distance Judgment unit；The mobile terminal further includes positioning unit；
The positioning unit is used to obtain the real-time position information of mobile terminal, and the location information is remotely sent to room
The wireless communication unit of outer machine；A reference distance value is preset in the Distance Judgment unit, be used to calculate mobile terminal with
Actual distance value between outdoor unit, and be compared the actual distance value obtained is calculated with reference distance value；
If actual distance value is greater than or equal to reference distance value, the outdoor unit unit and mobile terminal by wireless communication
Remote speech video interactive is carried out, while cutting off the interaction between indoor unit；Conversely, if actual distance value is less than reference distance
Value, the outdoor unit directly carries out voice and video with indoor unit and interacts, while cutting off the interaction between mobile terminal.
Using the above scheme, by judging the distance between mobile terminal and outdoor unit, can automatically switch outdoor unit with
Interactive relation between mobile terminal and indoor unit；If the distance between mobile terminal and outdoor unit are excessive, illustrate that interior is lived
Farther out apart from doorway, outdoor unit can be actively associated with mobile terminal at this time, to realize remote speech video interactive at family；Instead
It illustrates that indoor resident is closer apart from doorway if the distance between mobile terminal and outdoor unit are smaller, and outdoor unit can be certainly at this time
It is dynamic to be connected with indoor unit, it is interacted so that indoor resident directly can carry out voice and video with outdoor visitor by indoor unit, more people
Property.
Preferably, the indoor unit further includes the switching list in response to external trigger to send switching signal to outdoor unit
Member；After the outdoor unit receives switching signal, the interaction mode of mobile terminal can be switched to indoor unit or will be indoor
The interaction mode of machine switches to mobile terminal.
Using the above scheme, allow users to directly to pass through switch unit forcibly changing outdoor unit and mobile terminal and
Cross-correlation between indoor unit is convenient for Emergency use, more stable and humanized.
Preferably, the outdoor unit further includes in response to external trigger to send request instruction to Distance Judgment unit
Start unit；Start to calculate the actual range between mobile terminal and outdoor unit after Distance Judgment unit receives request instruction
Value, and be compared the actual distance value obtained is calculated with reference distance value.
Using the above scheme, start unit plays the role of " doorbell ", is sentenced by triggering start unit as starting distance
Disconnected unit enters the necessary condition of operating status, can be effectively reduced Distance Judgment unit and runs brought energy consumption, more supernumerary segment
It can environmental protection.
Preferably, the mobile terminal further includes prompt unit, after the comparison of Distance Judgment unit, if actual range
Value is greater than or equal to reference distance value, and the wireless communication unit remotely sends the prompt unit of prompt information to mobile terminal
It is interior, so that prompt unit is prompted.
Using the above scheme, after start unit is triggered, if indoor resident apart from doorway farther out, mentioning in mobile terminal
Show that unit is able to carry out prompt, is interacted with reminding indoor resident directly to pass through mobile terminal with outdoor visitor's progress voice and video.
Preferably, the mobile terminal further includes the confirmation unit in response to external trigger to send confirmation instruction, institute
Stating mobile terminal will confirm that the wireless communication unit of instruction distinct feed-back to outdoor unit, the outdoor unit are receiving confirmation instruction
Unit and mobile terminal carry out remote speech video interactive by wireless communication afterwards.
Using the above scheme, indoor resident can by whether triggering confirmation unit come decide whether by mobile terminal come with
Outdoor visitor carries out voice and video interaction, so that resident can possess more permissions, it is more humanized.
Preferably, the indoor unit further includes indicating unit, after the comparison of Distance Judgment unit, if actual distance value
Less than reference distance value, the Distance Judgment unit sends the indicating unit of request instruction to indoor unit so that indicating unit into
Row prompt.
Using the above scheme, when indoor resident is closer apart from doorway, the indicating unit on indoor unit can issue automatically
Prompt is interacted with reminding resident to carry out voice and video with outdoor visitor by indoor unit.
Preferably, after the wireless communication unit and mobile terminal of outdoor unit disconnect, the outdoor unit and interior
Machine carries out voice and video interaction.
Using the above scheme, lead to mobile terminal and outdoor unit when jitter or other emergency cases occurs in interior
Between line be cut off after, outdoor unit can actively be associated with indoor unit, to guarantee that bidirectional visual intercom system can be normal
Operation.
In conclusion the invention has the following advantages: outdoor unit is enabled directly to carry out voice with mobile terminal
Video interactive, so that the constraint of indoor unit is got rid of, so that resident interacts in the process with outdoor visitor at home not by locating
The limitation of position, it is more convenient, to save unnecessary trouble.
Detailed description of the invention
Fig. 1 is the system architecture diagram of the present embodiment.
In figure: 1, outdoor unit；2, mobile terminal；3, indoor unit.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of intelligent door real time bidirectional visual-speaking system disclosed in the present embodiment, as shown in Figure 1, include outdoor unit 1 with
Mobile terminal 2.Wherein, outdoor unit 1 is set to door far from the side position for being locked space, and mobile terminal 2 is preferably intelligence
Mobile phone, tablet computer etc. have the mobile device of wireless communication capability, and the mobile terminal 2 mentioned in the present embodiment all refers to
The mobile device that indoor resident is possessed.Outdoor unit 1 includes outdoor images acquisition unit, outdoor images output unit, outdoor language
Sound acquisition unit, outdoor voice-output unit, outdoor display unit, outdoor phonation unit and wireless communication unit.More specifically
, outdoor images acquisition unit is preferably high-definition camera, and outdoor images output unit is graphics processor, outdoor voice collecting
Unit is preferably microphone, and outdoor display unit is preferably display screen or touch screen, and outdoor phonation unit is preferably loudspeaker,
Wireless communication unit is preferably wireless router.Wireless communication unit is exchanged with the progress of mobile terminal 2 teledata simultaneously.
Mobile terminal 2 includes mobile image acquisition unit, mobile image output unit, mobile voice acquisition unit, movement
Voice-output unit, mobile display unit and mobile phonation unit.More specifically, mobile image acquisition unit preferably collects
At in the high-definition camera on mobile terminal 2, mobile image output unit is graphics processor, and mobile voice acquisition unit is preferred
For the microphone being integrated on mobile terminal 2, mobile display unit be preferably integrated on mobile terminal 2 display screen or touching
Screen is touched, mobile phonation unit is preferably integrated in the loudspeaker on mobile terminal 2.
In the present embodiment, outdoor images acquisition unit is used to obtain the life outdoor videos image information of outdoor visitor, and should
Life outdoor videos image information is sent to wireless communication unit by outdoor images output unit；Wireless communication unit will receive
Life outdoor videos image information is remotely sent in the mobile display unit of mobile terminal 2 and is shown, so that indoor resident can
The video image information of outdoor visitor is directly checked by the mobile display unit on mobile terminal 2.
Mobile image acquisition unit is used to obtain the indoor video image information of indoor resident, and by the interior video image
Information is remotely sent to wireless communication unit, the indoor video that wireless communication unit will receive by mobile image output unit
Image information is sent in outdoor display unit and is shown, so that outdoor visitor can be directly aobvious by the outdoor of outdoor unit 1
Show that unit checks the image information of indoor resident, to realize the video interactive of indoor and outdoor personnel.
Further, outdoor voice collecting unit is used to obtain the outdoor voice messaging of outdoor visitor, and by the outdoor
Voice messaging is sent to wireless communication unit by outdoor voice-output unit；The outdoor voice that wireless communication unit will receive
Information remote is sent to the mobile phonation unit of mobile terminal 2 and carries out voice broadcast by mobile phonation unit, so that indoor
Resident can directly obtain the voice messaging of outdoor visitor by the mobile phonation unit on mobile terminal 2.
Mobile voice acquisition unit is used to obtain the indoor voice messaging of indoor resident, and the interior voice messaging is passed through
Mobile voice output unit is remotely sent to wireless communication unit, and wireless communication unit sends the indoor voice messaging received
Voice broadcast is carried out to outdoor phonation unit and by outdoor phonation unit, so that outdoor visitor can be by outdoor unit 1
Outdoor phonation unit obtains the voice messaging of indoor resident, to realize the interactive voice of indoor and outdoor personnel.
Intelligent door real time bidirectional visual-speaking system further includes that can carry out the indoor unit that voice and video interacts with outdoor unit 1
3, which is preferably disposed on the indoor position close to doorway.In the present embodiment, indoor unit 3 includes that off-the-air picture acquisition is single
Member, off-the-air picture output unit, indoor voice collecting unit, indoor voice-output unit, indoor display unit and indoor hair
Sound unit.More specifically, off-the-air picture acquisition unit is preferably integrated in the high-definition camera on indoor unit 3, and off-the-air picture is defeated
Unit is graphics processor out, and indoor voice collecting unit is preferably integrated in the microphone on indoor unit 3, indoor display unit
It is preferably integrated in display screen or touch screen on indoor unit 3, indoor phonation unit is preferably integrated in raising on indoor unit 3
Sound device.The setting of said units can effectively realize that the voice and video between indoor unit 3 and outdoor unit 1 interacts.And work as outdoor unit 1
Wireless communication unit and after mobile terminal 2 disconnects, outdoor unit 1 carries out voice and video with indoor unit 3 and interacts.
Further, outdoor unit 1 further includes Distance Judgment unit.Mobile terminal 2 further includes positioning unit, the positioning list
Member is preferably integrated the position that can be accurately obtained where mobile terminal 2 in the GPS global positioning module in mobile terminal 2, from
The location of and determine indoor resident.Positioning unit is used to obtain the real-time position information of mobile terminal 2, and the position is believed
Breath is remotely sent to the wireless communication unit of outdoor unit 1.A reference distance value, the reference distance are preset in Distance Judgment unit
Value, which is subject to indoor resident, can fast move to the distance of 3 present position of indoor unit.Distance Judgment unit is for calculating movement
Actual distance value between terminal 2 and outdoor unit 1, and be compared the actual distance value obtained is calculated with reference distance value.
According to compare obtain as a result, if actual distance value be greater than or equal to reference distance value, illustrate room of the indoor resident apart from doorway
Too far, unit and mobile terminal 2 carry out remote speech video interactive to outdoor unit 1 to interior machine 3 by wireless communication at this time, cut off simultaneously
It with the interaction between indoor unit 3, not only ensure that indoor resident can carry out voice and video with outdoor visitor in time and interact, but also can drop
Energy consumption brought by low indoor unit 3.Conversely, illustrating indoor resident apart from indoor unit 3 if actual distance value is less than reference distance value
It is relatively close, can Rapid contact arrive indoor unit 3, outdoor unit 1 is directly interacted with the progress voice and video of indoor unit 3 at this time, simultaneously
Interaction between cutting and mobile terminal 2 directly opens door after confirming visitor's identity convenient for indoor resident, increases operation just
Benefit, while saving energy consumption brought by mobile terminal 2.
Further, indoor unit 3 further includes the switching list in response to external trigger to send switching signal to outdoor unit 1
Member, the switch unit can be physical button, or the virtual key being integrated in touch screen.Outdoor unit 1, which receives, to be cut
After changing signal, the interaction mode of mobile terminal 2 can be switched to indoor unit 3 or switch to the interaction mode of indoor unit 3
Mobile terminal 2 enables indoor resident to be forced between switching outdoor unit 1 and mobile terminal 2 and indoor unit 3 according to actual needs
Connection state, and be not only restricted to obtain after Distance Judgment unit compares as a result, to increase the scope of application, it is more humanized.
Further, outdoor unit 1 further includes in response to external trigger to send request instruction to Distance Judgment unit
Start unit, the start unit can be physical button, or the virtual key being integrated in touch screen.Work as Distance Judgment
Unit starts to calculate the actual distance value between mobile terminal 2 and outdoor unit 1 after receiving request instruction, and will calculate acquisition
Actual distance value is compared with reference distance value.I.e. after outdoor visitor triggers start unit, Distance Judgment unit can just be held
Begin to calculate the actual distance value between mobile terminal 2 and outdoor unit 1, and actual distance value is compared with reference distance value.
Determine that outdoor unit 1 carries out voice and video with indoor unit 3 or mobile terminal 2 and interacts finally by comparison result.
Further, mobile terminal 2 further includes prompt unit, after the comparison of Distance Judgment unit, if actual range
Value is greater than or equal to reference distance value, and wireless communication unit is remotely sent in prompt information to the prompt unit of mobile terminal 2, with
Prompt prompt unit, prompting mode can be auditory tone cues, can also be prompted by vibration or short message, to mention
Indoor user of waking up carries out voice and video call by mobile terminal 2 and outdoor visitor.
Further, mobile terminal 2 further includes the confirmation unit in response to external trigger to send confirmation instruction, this is really
Recognize the virtual key that unit can be the physical button being integrated on mobile terminal 2 or be integrated in touch screen.When mobile whole
After the user at end 2 receives the prompt information issued by prompt unit, by triggering the confirmation unit on mobile terminal 2,
Mobile terminal 2 can will confirm that the wireless communication unit of instruction distinct feed-back to outdoor unit 1, outdoor unit 1 refer to receiving confirmation
Unit and mobile terminal 2 carry out remote speech video interactive by wireless communication after order, so that indoor resident can be in range gate
Voice and video is carried out with outdoor visitor when mouth is compared with distant positions to interact.
Further, indoor unit 3 further includes indicating unit, and indicating unit can be the sounding being integrated on indoor unit 3
Alarm or light-emitting alarm.After the comparison of Distance Judgment unit, if actual distance value is less than reference distance value, distance is sentenced
Disconnected unit sends the indicating unit of request instruction to indoor unit 3, so that indicating unit is prompted, to remind indoor resident logical
Indoor unit 3 is crossed to interact with outdoor visitor's progress voice and video.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of intelligent door real time bidirectional visual-speaking system, it is characterized in that: including
Outdoor unit (1), including outdoor images acquisition unit, outdoor images output unit, outdoor voice collecting unit, outdoor voice
Output unit, outdoor display unit, outdoor phonation unit and wireless communication unit；
Mobile terminal (2), including mobile image acquisition unit, mobile image output unit, mobile voice acquisition unit, mobile language
Sound output unit, mobile display unit and mobile phonation unit；
The wireless communication unit carries out teledata with mobile terminal (2) and exchanges；
The outdoor images acquisition unit is used to obtain the life outdoor videos image information of outdoor visitor, and by the life outdoor videos image
Information is sent to wireless communication unit by outdoor images output unit；The life outdoor videos that the wireless communication unit will receive
Image information is remotely sent in the mobile display unit of mobile terminal (2) and is shown；
The mobile image acquisition unit is used to obtain the indoor video image information of indoor resident, and by the interior video image
Information is remotely sent to wireless communication unit, the interior that the wireless communication unit will receive by mobile image output unit
Video image information is sent in outdoor display unit and is shown；
The outdoor voice collecting unit is used to obtain the outdoor voice messaging of outdoor visitor, and the outdoor voice messaging is passed through
Outdoor voice-output unit is sent to wireless communication unit；The wireless communication unit is long-range by the outdoor voice messaging received
It is sent to the mobile phonation unit of mobile terminal (2) and voice broadcast is carried out by mobile phonation unit；
The mobile voice acquisition unit is used to obtain the indoor voice messaging of indoor resident, and the interior voice messaging is passed through
Mobile voice output unit is remotely sent to wireless communication unit, the indoor voice messaging that the wireless communication unit will receive
It is sent to outdoor phonation unit and voice broadcast is carried out by outdoor phonation unit.
2. intelligent door real time bidirectional visual-speaking system according to claim 1, it is characterized in that: further including can be with outdoor
Machine (1) carries out the indoor unit (3) of voice and video interaction, and the indoor unit (3) includes that off-the-air picture acquisition unit, off-the-air picture are defeated
Unit, indoor voice collecting unit, indoor voice-output unit, indoor display unit and indoor phonation unit out, the room
Outer machine (1) further includes Distance Judgment unit；The mobile terminal (2) further includes positioning unit；
The positioning unit is used to obtain the real-time position information of mobile terminal (2), and the location information is remotely sent to room
The wireless communication unit of outer machine (1)；It is preset with a reference distance value in the Distance Judgment unit, is used to calculate mobile terminal
(2) actual distance value between outdoor unit (1), and be compared the actual distance value obtained is calculated with reference distance value；
If actual distance value is greater than or equal to reference distance value, the outdoor unit (1) unit and mobile terminal by wireless communication
(2) remote speech video interactive is carried out, while cutting off the interaction between indoor unit (3)；Conversely, if actual distance value is less than base
Quasi- distance value, the outdoor unit (1) directly with indoor unit (3) carry out voice and video interact, while cut off and mobile terminal (2) it
Between interaction.
3. intelligent door real time bidirectional visual-speaking system according to claim 2, it is characterized in that: the indoor unit (3) is also
Switch unit including sending switching signal to outdoor unit (1) in response to external trigger；The outdoor unit (1) receives switching
After signal, the interaction mode of mobile terminal (2) can be switched to indoor unit (3) or cut the interaction mode of indoor unit (3)
Shift to mobile terminal (2).
4. intelligent door real time bidirectional visual-speaking system according to claim 2, it is characterized in that: the outdoor unit (1) is also
Start unit including sending request instruction to Distance Judgment unit in response to external trigger；When Distance Judgment unit receives
Start to calculate the actual distance value between mobile terminal (2) and outdoor unit (1) after request instruction, and by calculate obtain actually away from
It is compared from value with reference distance value.
5. intelligent door real time bidirectional visual-speaking system according to claim 4, it is characterized in that: the mobile terminal (2)
It further include prompt unit, after the comparison of Distance Judgment unit, if actual distance value is greater than or equal to reference distance value, the nothing
Line communication unit is remotely sent in prompt information to the prompt unit of mobile terminal (2), so that prompt unit is prompted.
6. intelligent door real time bidirectional visual-speaking system according to claim 5, it is characterized in that: the mobile terminal (2)
It further include the confirmation unit in response to external trigger to send confirmation instruction, the mobile terminal (2) will confirm that instruction is long-range anti-
Be fed to the wireless communication unit of outdoor unit (1), the outdoor unit (1) after receiving confirmation instruction by wireless communication unit with
Mobile terminal (2) carries out remote speech video interactive.
7. according to the described in any item intelligent door real time bidirectional visual-speaking systems of claim 2 to 6, it is characterized in that: the room
Interior machine (3) further includes indicating unit, described if actual distance value is less than reference distance value after the comparison of Distance Judgment unit
Distance Judgment unit sends the indicating unit of request instruction to indoor unit (3), so that indicating unit is prompted.
8. intelligent door real time bidirectional visual-speaking system according to claim 1, it is characterized in that: working as the nothing of outdoor unit (1)
After line communication unit and mobile terminal (2) disconnect, the outdoor unit (1) carries out voice and video with indoor unit (3) and interacts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409488.8A CN109672842A (en) | 2018-11-23 | 2018-11-23 | Intelligent door real time bidirectional visual-speaking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409488.8A CN109672842A (en) | 2018-11-23 | 2018-11-23 | Intelligent door real time bidirectional visual-speaking system |
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| CN109672842A true CN109672842A (en) | 2019-04-23 |
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| CN201811409488.8A Pending CN109672842A (en) | 2018-11-23 | 2018-11-23 | Intelligent door real time bidirectional visual-speaking system |
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Application publication date: 20190423 |