CN206136120U - Visible dialogue system and visual intercom device based on power line transmission - Google Patents
Visible dialogue system and visual intercom device based on power line transmission Download PDFInfo
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- CN206136120U CN206136120U CN201620860946.XU CN201620860946U CN206136120U CN 206136120 U CN206136120 U CN 206136120U CN 201620860946 U CN201620860946 U CN 201620860946U CN 206136120 U CN206136120 U CN 206136120U
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Abstract
The utility model discloses a visible dialogue system and visual intercom device based on power line transmission, wherein, the system includes: first visual intercom device, first visual intercom device be connected with be used for with the homeplug that composite signal sent away, and at least one be used for receiving composite signal and by isolate the 2nd digital video signal and the 2nd digital audio signal's the visual intercom device of second among the composite signal, the visual intercom device of second is connected with and is used for receiving the composite signal that comes from a homeplug and with its transmission extremely the visual intercom device's of second the 2nd homeplug, a homeplug and the 2nd homeplug carry out data transmission through the power line. The utility model provides a system synthesis traditional intercom do not have telephone expenses to produce, conveniently frequently telephone to and mobile terminal video communication sense of pictures is strong, can let the user clearly obtain the advantage of the current situation of the communication other end.
Description
Technical field
This utility model is related to power line communication technology field, more particularly to a kind of based on the visual of power line transmission
Intercom system and video intercom device.
Background technology
Transmitter receiver is a kind of bidirectional mobile communication instrument, in the case where any network support is not needed, it is possible to converse,
Without telephone expenses produce, it is adaptable to be relatively fixed and frequently conversing occasion.
Traditional transmitter receiver can only transmit sound and be unable to transmitted image, certainly, for present people, transmission figure
As to carry out video calling be no longer difficult point already, for example by the bitcom that is installed on mobile terminal or videophone etc. all
It is capable of achieving.But, good network environment is required for by bitcom or videophone either, if without network signal
Or such as underground garage, mine under the not good enough environment of network signal, both modes cannot all will realize.
As can be seen here, either traditional transmitter receiver is still provided with the visible mobile terminal of bitcom, its limitation
All too strong, once meeting emergency, people will be at one's wit's end.Such as in the ring of this dangerous and communication difficulties of mine or elevator
Under border, once there is personnel to be in distress, lifesaving personnel want the present situation for obtaining captive in time to adopt optimal rescue method, nothing
It is suspected to be luxury.
Therefore, prior art has yet to be improved and developed.
Utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model be provide it is a kind of based on power line transmission can
Depending on intercom system and video intercom device.Aim to solve the problem that traditional transmitter receiver cannot carry out video communication, and mobile terminal communication is soft
Part and videophone communication modes excessively rely on network environment, the problem that versatility is not good enough.
The technical solution of the utility model is as follows：
A kind of visible dialogue system based on power line transmission, wherein, the video intercom system based on power line transmission
System includes：
One is used to produce the first digital video signal and the first digital audio and video signals, and produced first DAB is believed
Number it is embedded in the first digital video signal to form the first video intercom device of composite signal, the first video intercom device
It is connected with the first Homeplug for the composite signal is sent；
And at least one be used to receive composite signal and by isolating the second digital video signal in the composite signal
And second digital audio and video signals the second video intercom device, the second video intercom device be connected with for receive come from
The composite signal of the first Homeplug simultaneously transmits it to the second Homeplug of the second video intercom device；
First Homeplug and the second Homeplug are carried out data transmission by electric lines of force.
Preferably, the described visible dialogue system based on power line transmission, wherein,
The first video intercom device includes：
For absorbing image and being converted to the digital camera of the first digital video signal；
For gathering sound and being converted to the digital microphone of the first digital audio and video signals；
And for being input into first digital video signal and the first digital audio and video signals to form the of composite signal
One process chip；
For by the data of composite signal be packaged as after packet the first Homeplug described in Jing and the second Homeplug send to
First PHY chip of the second video intercom device, first PHY chip and first process chip and the first Homeplug phase
Connection；
The second video intercom device includes：
For receiving composite signal and by the second digital video signal and the second digital sound are isolated in the composite signal
Frequency signal, and will send after second digital video signal processing to display screen and second digital audio and video signals are processed
Sent to the second processing chip of acoustical generator afterwards；
And for reception processing after the second digital video signal and the display screen according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator；
The packet for coming from the first video intercom device for the second Homeplug is sent is reduced after unpacking and is obtained
Second PHY chip of composite signal, second PHY chip are connected with the second processing chip and the second Homeplug.
Preferably, the described visible dialogue system based on power line transmission, wherein,
The first video intercom device includes：
N number of power equipment for producing control signal is switched, wherein, N≤8；
The second video intercom device includes：
At least one is used to receive the control signal to control the relay of power equipment.
Preferably, the described visible dialogue system based on power line transmission, wherein, first process chip includes：
For receiving first digital video signal and the first digital audio and video signals, and first DAB is believed
Number it is embedded in first digital video signal to form the digital inset module of the composite signal；
The digital inset module is connected with for by the first Homeplug described in composite signal Jing and the second Homeplug
Send to the data transmission blocks of second processing chip.
Preferably, the described visible dialogue system based on power line transmission, wherein, the second processing chip includes：
For receiving the data reception module of the composite signal for coming from second processing chip；
The data reception module is connected with for the second digital video signal and the second number are isolated from composite signal
The data de-embedding module of word audio signal；
The data de-embedding module is connected with for scaling the second digital video letter after de-embedding according to display resolution
Number adjusting the image adjustment module of display image size；
Described image adjusting module is connected with for the second digital video signal after process scaling to produce the display screen
The driver module of desirable format video.
Preferably, the described visible dialogue system based on power line transmission, wherein：The second video intercom device is also
Including：
For second digital audio and video signals to be converted to the analog-digital chip of simulated audio signal, the digital-to-analogue turns
Change chip to be connected with the data de-embedding module；
The analog-digital chip is connected with the audio frequency power amplifier chip for the simulated audio signal is amplified；
The acoustical generator is loudspeaker.
It is a kind of to be applied to any one video intercom device based on the visible dialogue system of power line transmission as above,
Wherein, the video intercom device is used as being the first video intercom device during calling terminal, used as visual right for second during called end
Say device.
A kind of video intercom device for being applied to the visible dialogue system based on power line transmission as above, wherein,
The video intercom device is filled for the second video intercom as during called end as being the first video intercom device during calling terminal
Put；
The video intercom device includes：
For absorbing image and being converted to the digital camera of the first digital video signal；
For gathering sound and being converted to the digital microphone of the first digital audio and video signals；
And be used to be input into first digital video signal and first when the video intercom device is as calling terminal
Digital audio and video signals to form composite signal, as during called end be used for receive composite signal and by the composite signal separate
Go out the second digital video signal and the second digital audio and video signals, and will send to display after second digital video signal processing
Shield and will send to the process chip of acoustical generator after second digital audio and video signals process；
And for reception processing after the second digital video signal and the display screen according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator.
Visible dialogue system based on power line transmission provided by the utility model, as a result of the first video intercom
Device produces the digital signal of video and audio frequency, by the first Homeplug for being mutually matched and the after being then collectively referred to as composite signal
Two Homeplugs are sent to the second video intercom device, and the second video intercom device is then after composite signal is received by composite signal
Isolate the second digital number and audio signal, and the signal transmission link for timely responding to so that can between video intercom device
By power line transmission, video calling can be also realized under without the not good enough environment of network signal or network signal, be improve visual
The versatility of talkback unit；Combining traditional transmitter receiver does not have telephone expenses to produce, and facilitates frequently conversing, and mobile terminal video to lead to
The sense of news picture is strong, and user can be allowed clearly to obtain the advantage of the present situation of the communication other end.
Description of the drawings
Fig. 1 is the functional schematic block diagram of the visible dialogue system in this utility model based on power line transmission；
Fig. 2 is the principle of work and power frame of the visible dialogue system preferred embodiment in this utility model based on power line transmission
Figure；
Fig. 3 is based in the first video intercom device in the visible dialogue system of power line transmission first in this utility model
The functional schematic block diagram of process chip；
Fig. 4 is based in the second video intercom device in the visible dialogue system of power line transmission second in this utility model
The functional schematic block diagram of process chip；
Fig. 5 is a kind of functional schematic block diagram of video intercom device preferred embodiment in this utility model；
Fig. 6 is the functional schematic block diagram of another kind of video intercom device preferred embodiment in this utility model.
Specific embodiment
This utility model provides a kind of visible dialogue system and video intercom device based on power line transmission, to make this reality
It is clearer, clear and definite with new purpose, technical scheme and effect, referring to the drawings and to give an actual example and enter one to this utility model
Step is described in detail.It should be appreciated that specific embodiment described herein is not used to limit only to explain this utility model
This utility model.
As shown in figure 1, a kind of visible dialogue system based on power line transmission, including the first video intercom device 100,
One Homeplug 200, electric lines of force 300, the second Homeplug 400 and the second video intercom device 500.
Specifically, the first video intercom device is used to produce the first digital video signal and the first digital audio and video signals, and
Produced first digital audio and video signals are embedded in the first digital video signal to form composite signal；Digital signal is being transmitted across
Not only there is in journey higher anti-interference, less bandwidth can also be taken by compression, realize passing in identical bandwidth
The effect of the digital signals such as defeated more, more high audio, video.
Digital signal be often referred to independent variable be discrete, dependent variable be also discrete signal, the independent variable of this signal is used
Integer representation, dependent variable are represented with a numeral in limited numeral.
When being embodied as, first digital video signal is high-frequency digital signal, and first digital audio and video signals are
First digital video signal of the first digital audio and video signals of low frequency embedded tremendously high frequency will be formed compound by low-frequency digital signal
Signal, specifically, forms the first composite signal.
Specifically, the first video intercom device is connected with the first electric power for the composite signal is sent
Cat.
Homeplug, also known as power line communication, power line communication modem, power line carrier communication are one kind net
Network signal modulation solves the problems, such as the equipment of network layout on electric wire using existing electric wire；High-voltage power line is utilized typically（
Power carrier field is often referred to 35KV and above）, medium voltage power line（Refer to 10KV electric pressures）Or low-voltage distribution wire
（380V/220V user's line）A kind of specific communication mode of voice or video data transmission is carried out as information transmitting medium.
When being embodied as, fusion has the first composite signal compression of the first digital video signal and the first digital audio and video signals
To transmit after packet to the first Homeplug, then the first Homeplug modulates on carrier wave and packet by electric lines of force transmission
Go out；
Or first composite signal is directly transferred to into the first Homeplug, then the first Homeplug is combined letter by first
Number directly modulation is sent on carrier wave and by electric lines of force；
First composite signal is packaged as into the use that packet can reduce transfer resource, is realized in identical transfer resource
The higher effect of more, quality can be transmitted down.
Specifically, second Homeplug comes from the composite signal of first Homeplug for reception and is transmitted
To the second video intercom device.
Second Homeplug is that second Homeplug is used for herein with the difference of first Homeplug
Signal is received, and first Homeplug is used for sending signal.
Specifically, the second video intercom device is used to receiving composite signal and by the is isolated in the composite signal
Two digital video signals and the second digital audio and video signals.
Second digital video signal i.e. through Single cell fusion and the first digital video signal of first separation, described
Two digital audio and video signals are i.e. through Single cell fusion and the first digital audio and video signals of first separation.
When being embodied as, if first composite signal passes through packing in the first video intercom device, described
Through unpacking in second video intercom device, then by the second digital video signal and second digital is isolated in the composite signal
Audio signal is specially by the second digital video letter is isolated in the first composite signal for obtaining after the second PHY chip is unpacked
Number and the second digital audio and video signals.
PHY refers to physical layer, refers generally to the chip with external signal interface, when PHY chip transmission or receiving data, defines number
According to the transmission electricity required with reception and optical signal, line status, clock reference, data encoding or circuit etc..
Specifically, first Homeplug and the second Homeplug are carried out data transmission by electric lines of force.
Visible dialogue system based on power line transmission provided by the utility model, as a result of the first video intercom
Device produces the digital signal of video and audio frequency, by the first Homeplug for being mutually matched and the after being then collectively referred to as composite signal
Two Homeplugs are sent to the second video intercom device, and the second video intercom device is then after composite signal is received by composite signal
Isolate the second digital number and audio signal, and the signal transmission link for timely responding to so that can between video intercom device
By power line transmission, video calling can be also realized under without the not good enough environment of network signal or network signal, be improve visual
The versatility of talkback unit；Combining traditional transmitter receiver does not have telephone expenses to produce, and facilitates frequently conversing, and mobile terminal video to lead to
The sense of news picture is strong, and user can be allowed clearly to obtain the advantage of the present situation of the communication other end.
As shown in Fig. 2 further, the first video intercom device includes：N number of electric power for producing control signal
Facility switching 130, wherein, N≤8；
The second video intercom device includes：At least one is used to receive the control signal to control power equipment
Relay 590.
In preferred embodiment, when the first video intercom device and the second video intercom device are not in video intercommunication shape
During state, before the power equipment switch sends a control signal to the first Homeplug, the digital camera produces synchronizing signal,
The control signal is low frequency signal, and the control signal forms the second composite signal in being embedded in the synchronizing signal, described
Second composite signal is sent directly to the first Homeplug by the first process chip, and is arrived by first Homeplug modulation
Send on carrier wave, or first process chip sends second composite signal to the first PHY chip, described in Jing
First Homeplug modulation described in Jing after first PHY chip is packaged as packet is sent by electric lines of force on carrier wave；
When first composite signal or the second composite signal are sent to the first PHY chip, produce " data, send enable and
Tranmitting data register " signal.
In another preferred embodiment, when the first video intercom device and the second video intercom device are in video calling
During state, before the power equipment switch sends a control signal to the first Homeplug, the digital camera produces first and counts
Word video signal, the digital microphone produce the first digital audio and video signals, first digital audio and video signals and control signal
First digital video signal is embedded in successively to form the 3rd composite signal, the 3rd composite signal is multiple with described first
The transmission means for closing signal and the second composite signal is identical, that is, be divided into and transmit and do not transmit.
Further, the first video intercom device includes：
For absorbing image and being converted to the digital camera 110 of the first digital video signal；
For gathering sound and being converted to the digital microphone 120 of the first digital audio and video signals；
And for being input into first digital video signal and the first digital audio and video signals to form the of composite signal
One process chip 140；
For by the data of composite signal be packaged as after packet the first Homeplug described in Jing and the second Homeplug send to
First PHY chip 150 of the second video intercom device, first PHY chip and first process chip and the first electric power
Cat is connected；
The second video intercom device includes：
The packet for coming from the first video intercom device for the second Homeplug is sent is reduced after unpacking and is obtained
Second PHY chip 550 of composite signal, second PHY chip are connected with the second processing chip and the second Homeplug；
For receiving composite signal and by the second digital video signal and the second digital sound are isolated in the composite signal
Frequency signal, and will send after second digital video signal processing to display screen and second digital audio and video signals are processed
Sent to the second processing chip 540 of acoustical generator afterwards；
And for reception processing after the second digital video signal and the display screen 570 according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator 580.
When being embodied as, the digital camera is preferably CMOS（Complementary Metal Oxide
Semiconductor, complementary metal oxide semiconductors (CMOS)）Digital camera, it is YUV422 which produces signal（A kind of collection lattice
Formula）；The digital microphone is preferably MEMS microphone, i.e., based on MEMS（Micro Electro Mechanical System）The mike of technology manufacture,
Which adopts I2S（Integrated circuit built-in audio bus）.
First process chip and second processing chip adopt fpga chip；FPGA(Field-Programmable
Gate Array), i.e. field programmable gate array, and fpga chip is field-programmable chip, the FPGA for just having dispatched from the factory is one
" blank " chip, according to functional requirement, obtains " recordable paper " after " writing code, compiled code ", then by download cable
Recordable paper is write after FPGA, FPGA is exactly a chip for having specific function, reusable.Different files are downloaded,
FPGA realizes that function is just different, i.e. FPGA is the chip that a function can customize.
In the embodiment of the present invention, the first video intercom device and the second video intercom device all include：For absorbing
Image is simultaneously converted to the digital camera of the first digital video signal；
For gathering sound and being converted to the digital microphone of the first digital audio and video signals；
And be used to be input into first digital video signal and first when the video intercom device is as calling terminal
Digital audio and video signals to form composite signal, as during called end be used for receive composite signal and by the composite signal separate
Go out the second digital video signal and the second digital audio and video signals, and will send to display after second digital video signal processing
Shield and will send to the process chip of acoustical generator after second digital audio and video signals process, the process chip is FPGA cores
Piece；
And for reception processing after the second digital video signal and the display screen according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator.
As shown in figure 3, further, first process chip includes：For receiving first digital video signal
And first digital audio and video signals, and first digital audio and video signals are embedded in into first digital video signal to be formed
State the digital inset module 141 of composite signal；
The digital inset module is connected with for by the first Homeplug described in composite signal Jing and the second Homeplug
Send to the data transmission blocks 142 of second processing chip.
As shown in figure 4, further, the second processing chip includes：
For receiving the data reception module 521 of the composite signal for coming from second processing chip；
The data reception module is connected with for the second digital video signal and the second number are isolated from composite signal
The data de-embedding module 522 of word audio signal；
The data de-embedding module is connected with for scaling the second digital video letter after de-embedding according to display resolution
Number adjusting the image adjustment module 523 of display image size；
Described image adjusting module is connected with for the second digital video signal after process scaling to produce the display screen
The driver module 524 of desirable format video.
Further, the second video intercom device also includes：For second digital audio and video signals are converted to
The analog-digital chip of simulated audio signal, the analog-digital chip are connected with the data de-embedding module；
The analog-digital chip is connected with the audio frequency power amplifier chip for the simulated audio signal is amplified；Described
Sound device is loudspeaker.
Further, the second processing chip is connected with the DDR for storing ephemeral data in image process and stores
Device；
The second processing chip is provided with for the DDR controller of data interaction is carried out with the external memory.
A kind of video intercom device, the video intercom device as during calling terminal be the first video intercom device, as
It is the second video intercom device during called end.
As shown in figure 5, this utility model is additionally provided and a kind of is applied to the above-mentioned video intercom system based on power line transmission
The video intercom device of system, the video intercom device as during calling terminal be the first video intercom device, during as called end
Used as the second video intercom device, which includes:
For absorbing image and being converted to the digital camera 810 of the first digital video signal；
For gathering sound and being converted to the digital microphone 820 of the first digital audio and video signals；
And N number of power equipment switch 830 for producing the first control signal,；
And for be input into first digital video signal and the first digital audio and video signals with formed the first composite signal,
It is input into first control signal and synchronizing signal to form the second composite signal or be input into first control signal, first digital
Audio signal and the first digital video signal form the 3rd composite signal, and send to the first Homeplug with send first
Process chip 840；
As during calling terminal for formed the first composite signal, the second composite signal or the 3rd composite signal are packaged as
Packet is sent to the first Homeplug, is obtained as coming from the packet of calling terminal and being unpacked for reception during called end
The PHY chip 850 of the second composite signal after the first composite signal, unpacking or the 3rd composite signal after unpacking after unpacking；
For the first composite signal of reception, the second composite signal or the 3rd composite signal and by one of three composite signals
Corresponding signal is isolated, and second control signal is sent to relay, by after second digital video signal processing
Send to display screen and/or second digital audio and video signals；
And for receiving the second control signal the relay according to the corresponding power equipment of the second control signal control
890；
And for reception processing after the second digital video signal and the display screen 870 according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator 880.
First control signal belongs to same signal with the second control signal, and except for the difference that first control signal is
The newly-generated signal positioned at calling terminal, second control signal be process after the signal positioned at called end, described first
In the same manner, first digital audio and video signals are also same with the second digital audio and video signals for digital video signal and the second digital video signal
Reason.
The concrete structure of the parts such as first process chip, second processing chip and PHY chip as described above, its
In, PHY chip includes above-mentioned first PHY chip and the second PHY chip, it is possible to achieve both functions；That is based on electricity
The first video intercom device and the second video intercom device in the visible dialogue system of line of force transmission all includes a PHY
Chip and the second PHY chip, first PHY chip and the second PHY chip can be same PHY chips, it is to be understood that
First PHY chip and the second PHY chip also can be realized by different chips.
The video intercom device also includes：Simulated audio signal is converted to for just described second digital audio and video signals
Analog-digital chip, the analog-digital chip is connected with the data de-embedding module；
The second processing chip is connected with the DDR memory for storing ephemeral data in image process；
The second processing chip is provided with for the DDR controller of data interaction is carried out with the external memory.
As shown in fig. 6, this utility model additionally provides another kind is applied to the video intercom based on power line transmission
Video intercom device in system, the video intercom device include：
As being the first video intercom device during calling terminal, as during called end, used as the second video intercom device, which wraps
Include:
For absorbing image and being converted to the digital camera 910 of the first digital video signal；
For gathering sound and being converted to the digital microphone 920 of the first digital audio and video signals；
And N number of power equipment switch 930 for producing the first control signal,；
And as during calling terminal be used for be input into first digital video signal and the first digital audio and video signals to be formed
First composite signal, input first control signal and synchronizing signal form the second composite signal or are input into first control
Signal, the first digital audio and video signals and the first digital video signal form the 3rd composite signal, and send to the first Homeplug with
Send；As being used for receiving during called end the first composite signal, the second composite signal or the 3rd composite signal and by three
Isolate corresponding signal in one of composite signal, and second control signal is sent to relay, digital by described second
Send after video frequency signal processing to display screen and/or second digital audio and video signals
Chip（Preferably fpga chip）940；
As during calling terminal for formed the first composite signal, the second composite signal or the 3rd composite signal are packaged as
Packet is sent to the first Homeplug, is obtained as coming from the packet of calling terminal and being unpacked for reception during called end
The PHY chip 950 of the second composite signal after the first composite signal, unpacking or the 3rd composite signal after unpacking after unpacking；
And for receiving the second control signal the relay according to the corresponding power equipment of the second control signal control
990；
And for reception processing after the second digital video signal and the display screen 970 according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator 980.
It should be appreciated that application of the present utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
Say, can be improved according to the above description or be converted, such as the first process chip and second processing core in video intercom device
Whether, by same chip realization etc., all these modifications and variations should all belong to right appended by this utility model will for the function of piece
The protection domain asked.
Claims (6)
1. a kind of visible dialogue system based on power line transmission, it is characterised in that described based on the visual right of power line transmission
The system of saying includes：
One is used to produce the first digital video signal and the first digital audio and video signals, and will be produced first digital audio and video signals embedding
Enter to the first digital video signal to form the first video intercom device of composite signal, the first video intercom device connection
There is the first Homeplug for the composite signal is sent；
And at least one be used to receiving composite signal and by the second digital video signal and the are isolated in the composite signal
Second video intercom device of two digital audio and video signals, the second video intercom device are connected with and come from first for receiving
The composite signal of Homeplug simultaneously transmits it to the second Homeplug of the second video intercom device；
First Homeplug and the second Homeplug are carried out data transmission by electric lines of force；
The first video intercom device includes：
For absorbing image and being converted to the digital camera of the first digital video signal；
For gathering sound and being converted to the digital microphone of the first digital audio and video signals；
And for be input into first digital video signal and the first digital audio and video signals with formed composite signal first at
Reason chip；
For the data of composite signal being packaged as after packet the first Homeplug described in Jing and the second Homeplug is sent to second
First PHY chip of video intercom device, first PHY chip are connected with first process chip and the first Homeplug
Connect；
The second video intercom device includes：
For receive composite signal and by isolate in the composite signal the second digital video signal and the second DAB letter
Number, and will send after second digital video signal processing to display screen and will send out after second digital audio and video signals process
Deliver to the second processing chip of acoustical generator；
And for reception processing after the second digital video signal and the display screen according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator；
The packet for coming from the first video intercom device for the second Homeplug is sent is reduced after unpacking and is combined
Second PHY chip of signal, second PHY chip are connected with the second processing chip and the second Homeplug；
First process chip includes：
For receiving first digital video signal and the first digital audio and video signals, and will be first digital audio and video signals embedding
Enter to first digital video signal to form the digital inset module of the composite signal；
The digital inset module is connected with for the first Homeplug described in composite signal Jing and the second Homeplug are sent
To the data transmission blocks of second processing chip.
2. the visible dialogue system based on power line transmission according to claim 1, it is characterised in that
The first video intercom device includes：
N number of power equipment for producing control signal is switched, wherein, N≤8；
The second video intercom device includes：
At least one is used to receive the control signal to control the relay of power equipment.
3. the visible dialogue system based on power line transmission according to claim 1, it is characterised in that the second processing
Chip includes：
For receiving the data reception module of the composite signal for coming from second processing chip；
The data reception module is connected with for the second digital video signal and the second digital sound are isolated from composite signal
The data de-embedding module of frequency signal；
The data de-embedding module be connected with for will according to display resolution scale de-embedding after the second digital video signal with
Adjust the image adjustment module of display image size；
Described image adjusting module is connected with for the second digital video signal after process scaling to produce needed for the display screen
The driver module of format video.
4. the visible dialogue system based on power line transmission according to claim 3, it is characterised in that：Described second is visual
Talkback unit also includes：
For second digital audio and video signals to be converted to the analog-digital chip of simulated audio signal, the digital-to-analogue conversion core
Piece is connected with the data de-embedding module；
The analog-digital chip is connected with the audio frequency power amplifier chip for the simulated audio signal is amplified；
The acoustical generator is loudspeaker.
5. a kind of visible dialogue system based on power line transmission being applied to as described in any one of Claims 1-4 is visual
Talkback unit, it is characterised in that the video intercom device as during calling terminal be the first video intercom device, as called end
When be the second video intercom device.
6. a kind of visible dialogue system based on power line transmission being applied to as described in any one of claim 2 to 4 is visual
Talkback unit, it is characterised in that the video intercom device as during calling terminal be the first video intercom device, as called end
When be the second video intercom device；
The video intercom device includes：
For absorbing image and being converted to the digital camera of the first digital video signal；
For gathering sound and being converted to the digital microphone of the first digital audio and video signals；
And it is used for being input into when the video intercom device is as calling terminal first digital video signal and first digital
Audio signal to form composite signal, as being used for receiving during called end composite signal and by the is isolated in the composite signal
Two digital video signals and the second digital audio and video signals, and will send after second digital video signal processing to display screen and
To send to the process chip of acoustical generator after second digital audio and video signals process；
And for reception processing after the second digital video signal and the display screen according to its display image；
And for reception processing after the second digital audio and video signals and according to its play sound acoustical generator.
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| CN201620860946.XU CN206136120U (en) | 2016-08-10 | 2016-08-10 | Visible dialogue system and visual intercom device based on power line transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108184084A (en) * | 2017-12-29 | 2018-06-19 | 北京九方广维科技有限公司 | The video-signal transmission method and device of intercom |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108184084A (en) * | 2017-12-29 | 2018-06-19 | 北京九方广维科技有限公司 | The video-signal transmission method and device of intercom |
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