CN105846898B - A kind of visible light communication method, sending device and system - Google Patents
A kind of visible light communication method, sending device and system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
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Abstract
This application discloses a kind of visible light communication method, sending device, reception device and systems, it is seen that the communication information transmitted is modulated in original image signal by the transmitting terminal of optic communication line by line, generates modulated image signal；The modulated image signal is shown in a manner of progressive scan.The receiving terminal of visible light communication acquires modulated image signal；The modulated image signal is progressively scanned, the communication information in the modulated image signal is demodulated.Technical solution provided by the present application, by being that the communication information that will be transmitted is modulated in original image signal line by line, generate modulated image signal, then the modulated image signal is shown in a manner of progressive scan, so when demodulating the transmitted communication information, without taking complete picture frame, as long as collecting the row in the modulated image signal, the communication information that the row is transmitted can be demodulated, the requirement of the time synchronization for visible light communication system can be reduced.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of visible light communication method, sending device, reception device and
System.
Background technology
Wireless communication technique allows user to realize communication by wireless signal, without arranging complicated signal transmssion line
Road is more and more widely used in daily life with the feature that its is convenient and efficient.And with the network resource of frequency range, net
Network interferes and increasingly serious the problems such as secrets disclosed by net, and user is for that can overcome the need of the wireless communication technique of the above problem
Ask more and more urgent, it is seen that optical communication technique (Visible Light Communication, VLC) is exactly one such.It can
The light-exposed communication technology is to will be seen that as information carrier, a kind of channel radio of information is transmitted using High Speed Modulation light wave signal for light
Letter technology.
Existing visible light communication method typically carrys out carrying information with complete picture frame, and each picture frame is independently
Carry one section of complete information.In modulation intelligence, one section of complete information is modulated in a complete picture frame, then by showing
Show that equipment shows the picture frame；In demodulating information, which is taken by capture apparatus, then utilizes the figure taken
As the row coordinate and row coordinate of frame determine partial information that each region of the picture frame carries respectively, then by the picture frame
The partial information that all areas are carried combines, and forms the complete information that the picture frame is carried.
But existing visible light communication method, it needs to take the complete picture frame of a width every time, it could be from a width
One section of complete information that the picture frame is carried is demodulated in complete picture frame, this requires the capture apparatus of picture frame and display
Equipment ensures stringent time synchronization, could take the image just when showing that equipment shows the complete picture frame of a width
Frame, and this time synchronization is difficult to control, so this time synchronization is to the more demanding of visible light communication system.
Invention content
An embodiment of the present invention provides a kind of visible light communication method, sending device, reception device and systems, with reduction pair
In the requirement of the time synchronization of visible light communication system.
In order to solve the above technical problems, the embodiment of the present invention provides following technical scheme：
A kind of visible light communication method, including：
The communication information transmitted is modulated in original image signal line by line, generates modulated image signal；
The modulated image signal is shown in a manner of progressive scan.
Preferably, described to be modulated to the communication information transmitted in original image signal line by line, generate modulation image letter
Number, including：
The communication information transmitted is divided into multiple information sequences；
According to the often capable row serial number of the original image signal, each information sequence is embedded into the original image and is believed
In number, makes the embedded information sequence of often row of the original image signal, generate modulated image signal.
A kind of visible light communication method, including：
Acquire modulated image signal；
The modulated image signal is progressively scanned, the communication information in the modulated image signal is demodulated.
Preferably, the progressive scan modulated image signal, demodulates the communication information in the modulated image signal,
Including：
Progressively scan the modulated image signal；
Demodulate the modulated image signal often go in information sequence, and according to the original image signal often row
Information sequence in every row is combined as the transmitted communication information by row serial number.
A kind of visible light communication sending device, including：
Modulation module generates modulation image for the communication information transmitted to be modulated in original image signal line by line
Signal；
Display module, for showing the modulated image signal in a manner of progressive scan.
Preferably, the modulation module, including：
Division unit, for the communication information transmitted to be divided into multiple information sequences；
Each information sequence is embedded by generation unit for the often capable row serial number according to the original image signal
In the original image signal, makes the embedded information sequence of often row of the original image signal, generate modulated image signal.
A kind of visible light communication reception device, including：
Taking module, for acquiring modulated image signal；
Demodulation module demodulates the communication letter in the modulated image signal for progressively scanning the modulated image signal
Breath.
Preferably, the demodulation module, including：
Scanning element, for progressively scanning the modulated image signal；
Assembled unit, for demodulating the information sequence in often the going of the modulated image signal, and according to the original graph
As the often capable row serial number of signal, the information sequence in every row is combined as to the transmitted communication information.
A kind of visible light communication system, including：
Visible light communication sending device and visible light communication reception device；
The optic communication sending device is generated for the communication information transmitted to be modulated in original image signal line by line
Modulated image signal, and the modulated image signal is shown in a manner of progressive scan；
The visible light communication reception device progressively scans the modulation image letter for acquiring modulated image signal
Number, demodulate the communication information in the modulated image signal.
Preferably,
The visible light communication sending device is used to the communication information transmitted being divided into multiple information sequences, according to institute
The often capable row serial number for stating original image signal, each information sequence is embedded into the original image signal, the original is made
The embedded information sequence of often row of beginning picture signal, generates modulated image signal；
The visible light communication reception device demodulates the modulation image letter for progressively scanning the modulated image signal
Number often go in information sequence, and according to the often capable row serial number of the original image signal, by the information sequence in every row
It is combined as the transmitted communication information.
Therefore technical solution provided by the present application, it is original by being that the communication information that will be transmitted is modulated to line by line
In picture signal, modulated image signal is generated, the modulated image signal is then shown in a manner of progressive scan, then solving
When adjusting the transmitted communication information, without taking complete picture frame, as long as collecting the row in the modulated image signal,
The communication information that the row is transmitted can be demodulated, the requirement of the time synchronization for visible light communication system can be reduced.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of flow diagram of one embodiment of visible light communication method provided by the invention；
Fig. 2 is a kind of flow diagram of another embodiment of visible light communication method provided by the invention；
Fig. 3 is a kind of structural schematic diagram of one embodiment of visible light communication sending device provided by the invention；
Fig. 4 is a kind of structural schematic diagram of one embodiment of visible light communication reception device provided by the invention；
Fig. 5 is a kind of structural schematic diagram of one embodiment of visible light communication system provided by the invention.
Specific implementation mode
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
It is only a part of the embodiment of the present invention to apply example, and not all embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
The purpose of the present invention is being designed by way of to visual image carrying information and image checking, base is realized
In the communication of image visible light signal, and receiving terminal can be effectively reduced to time synchronization, image frame synchronization and spatial synchronization
Requirement, improve communication efficiency and performance.
Herein, time synchronization refers to synchronization of the information of sequential delivery in the time domain between receiving-transmitting sides, i.e., synchronous
Receiving terminal accurately can extract information successively in the time domain afterwards.And frame synchronization refers to receiving terminal to receive frame by frame, due to
Transmitting terminal is sent (60 frame image such as per second) by unit sequential of picture frame, and after frame synchronization, the imaging device of receiving terminal exists
Exposure period can be controlled when shooting in the time domain, takes a complete frame, rather than randomly chooses a period shooting
(superposition that multiple image may be taken).
Fig. 1 is a kind of flow diagram of one embodiment of visible light communication method provided by the invention.
Shown in referring to Fig.1, visible light communication method provided by the embodiments of the present application includes the following steps：
S101：The communication information transmitted is modulated in original image signal line by line, generates modulated image signal；
In the embodiment of the present application, described to be modulated to the communication information transmitted in original image signal line by line, it generates
Modulated image signal may include：The communication information transmitted is divided into multiple information sequences；Believe according to the original image
Number often capable row serial number, each information sequence is embedded into the original image signal, the original image signal is made
The often embedded information sequence of row, generates modulated image signal.
The basic principle of the present invention is by being divided image by row on two-dimensional space, the communication transmitted being believed
Breath is embedded in line by line, i.e., carries identical information using the visible light signal of often row image；Receiving terminal is adopted by imaging
Collection obtains visible light signal, and signal energy is accumulated by row, extracts the information of every a line image carrying, realizes communication process.
Refer to accumulating the signal of a full line by row accumulation, accumulation can be regarded as a kind of synthesis of information, it is therefore an objective to
The accuracy for promoting information judgement to the full extent (when interfering occurs in image respective location or noise, it is wrong to be unlikely to judgement
Accidentally), therefore identical just because of the information of every row, it just will can often go the extraction of accumulation (synthesis) laggard row information.It is every in this way
Row obtains independent information, to form an information sequence (line by line) in the row direction.
Specifically, in the embodiment of the present application, when transmission information is modulated on the original image line by line, an original frame figure
As one two-dimensional matrix of signalIt indicates, the two-dimensional space position of the ranks coordinate correspondence image of matrix
It sets.Transmission information sequence is expressed as B=[b1,b2…bK], modulate identical information b using the often row of picture signal matrixkIt can obtain
It is expressed as to a modulated frame image signalInformation sequence is believed that when continuous communiction
Length is much larger than the line number M of image, therefore bM+1Using next frame image Ai+1A line modulation, and so on.
S102：The modulated image signal is shown in a manner of progressive scan.
Specifically, the signal after it will modulateWhen being sent into display equipment display transmission,
It shows in equipment, picture signal is usually shown as unit of frame frame by frame, and refreshes figure in such a way that display equipment is scanned using row
When picture, what each frame image was actually presented line by line, the at this moment transmission of information is similarly with behavior unit.
In the prior art, common modulation system is designed as unit of the complete image of a frame, i.e., per frame image
One segment information of independent carrying, benefit are that design is simple, are transmitted convenient for being generalized to continuous multiframe by a static frame picture.This
When complete frame synchronization be equivalent to complete time synchronization, in other words after frame synchronization recipient can in the time domain accurately according to
Secondary acquisition information.And since the image progressive sweeper brush new principle of display transmitting terminal is limited, accurate frame synchronization is in imaging
Relatively difficult to achieve, superposition or the interframe that can usually take multiframe are excessive.
And in the embodiment of the present application, since the mode of display equipment generally use row scanning realizes the refreshing of picture frame, because
Line by line modulation intelligence is not necessarily to obtain complete image frame by frame in the time domain without transmitting terminal and receiving terminal image frame synchronization for this,
Thus greatly reduce requirement and the difficulty (not having to accurate frame synchronization) of communication system time synchronization.
Therefore technical solution provided by the present application, it is original by being that the communication information that will be transmitted is modulated to line by line
In picture signal, modulated image signal is generated, the modulated image signal is then shown in a manner of progressive scan, then solving
When adjusting the transmitted communication information, without taking complete picture frame, as long as collecting the row in the modulated image signal,
The communication information that the row is transmitted can be demodulated, the requirement of the time synchronization for visible light communication system can be reduced.
Fig. 2 is the flow diagram of one embodiment of another visible light communication method provided by the invention.
With reference to shown in Fig. 2, visible light communication method provided by the embodiments of the present application includes the following steps：
S201：Acquire modulated image signal；
In the embodiment of the present application, the modulated image signal is that the communication information that will be transmitted is modulated to original graph line by line
As being generated in signal.When acquiring the modulated image signal, be using imaging device to picture signal display generate can
Light-exposed signal carries out image checking and acquisition.
S202：The modulated image signal is progressively scanned, the communication information in the modulated image signal is demodulated.
By the communication information transmitted, insertion is shown in the image that equipment is shown the transmitting terminal of the embodiment of the present invention line by line, profit
The picture signal after embedded (modulation) information is shown with display equipment, to send the communication information using its visible light signal；
Receiving terminal is acquired picture signal using imaging device, and visible light signal is obtained based on imaging acquisition, by picture signal by
After row accumulation, the communication information is extracted.
In the embodiment of the present application, the progressive scan modulated image signal, demodulates in the modulated image signal
The communication information, may include：Progressively scan the modulated image signal；Demodulate the modulated image signal often go in letter
It ceases sequence, and according to the often capable row serial number of the original image signal, the information sequence in every row is combined as being transmitted
The communication information.
Specifically, by taking optical signal intensification modulation as an example, collection of letters luminance matrix can be docked sum line by line and obtain：
It at this time can be from skMiddle correspondence obtains bk。
When using different modulation systems, also correspondence is accumulated line by line and takes different calculations, such as uses RGB color
It can sum to RGB component when modulation.
For example, following light intensity (brightness) modulation scheme can be used in the embodiment of the present application：A string are indicated with ' 0/1 '
Bit sequence, when sending bit ' 1 ' brightness increase by 20%, send ' 0 ' when brightness reduce by 20%, such as useBrightness is indicated, then b in information sequencekIt can be expressed as：
Modulation system in practice is not limited to intensification modulation, what kind of signal modulated using, just using corresponding specific in this programme
Calculation may be applicable to the method that this programme is modulated line by line.
Due to receiving realized by being imaged shooting, the exposure period of shooting determines the picture material received, such as
Fruit exposes for a long time can make each frame image superposition in the period obscure, and can not parse respectively again.To which receiving terminal must be real
Now shooting exposure period is shown synchronous with each frame refreshing, can effectively receive each frame picture material of transmission.
In general, as long as frame rate known to receiving terminal so that the time for exposure is less than display time (60 frames of a frame image
When per second, the display time per frame is 1/60 second), and make exposure period not across two frames, it will be able to realize frame synchronization, into
Row is shot frame by frame.However control exposure period is not easy to accomplish across two frames, simultaneously because the reason of row scanning, is easy to clap
It takes the photograph to obtain incomplete image, i.e., only part row (image top half) has shown that present frame, another part (image lower half
Part) row is still previous frame image.At this moment picture is although imperfect, but most rows are all complete, therefore does not influence to believe
The extraction of breath.At this moment present frame is although imperfect (not obtaining all information), but can be added at the next shot
It is whole.And if traditional information insertion scheme is not picked up by complete frame image, information can not obtain.
Traditional scheme needs realization spatial synchronization stringenter on two-dimensional space, and this programme is modulated line by line due to having
Characteristic, it is insensitive to the error on column direction, after receiving terminal obtains collected two dimensional image signal, only need to by line direction by
Row accumulation (summation), you can obtain the signal sequence of one-dimensional sequence carrying information.Therefore receiving terminal only needs to obtain the side of row
To the stringent spatial synchronization in sending and receiving end on whole image two-dimensional space when avoiding information extraction.
Therefore technical solution provided by the present application, it is original by being that the communication information that will be transmitted is modulated to line by line
In picture signal, modulated image signal is generated, the modulated image signal is then shown in a manner of progressive scan, then solving
When adjusting the transmitted communication information, without taking complete picture frame, as long as collecting the row in the modulated image signal,
The communication information that the row is transmitted can be demodulated, time synchronization and spatial synchronization for visible light communication system can be reduced
Requirement.
Fig. 3 is a kind of structural schematic diagram of one embodiment of visible light communication sending device provided by the invention.
With reference to shown in Fig. 3, visible light communication sending device provided by the embodiments of the present application, including：
Modulation module 1 generates modulation image for the communication information transmitted to be modulated in original image signal line by line
Signal；
Preferably, the modulation module 1, including：
Division unit, for the communication information transmitted to be divided into multiple information sequences；
Each information sequence is embedded by generation unit for the often capable row serial number according to the original image signal
In the original image signal, makes the embedded information sequence of often row of the original image signal, generate modulated image signal.
Display module 2, for showing the modulated image signal in a manner of progressive scan.
It should be noted that the visible light communication sending device of the present embodiment may be used in above method embodiment can
Light-exposed communication means, can be used to implement all the technical solutions in the foregoing method embodiment, the function of each function module
It can be implemented according to the method in above method embodiment, specific implementation process can refer to the correlation in above-described embodiment
Description, details are not described herein again.
Fig. 4 is a kind of structural schematic diagram of one embodiment of visible light communication reception device provided by the invention.
With reference to shown in Fig. 4, visible light communication reception device provided by the embodiments of the present application, including：
Taking module 3, for acquiring modulated image signal；
Demodulation module 4 demodulates the communication letter in the modulated image signal for progressively scanning the modulated image signal
Breath.
Preferably, the demodulation module 4, including：
Scanning element, for progressively scanning the modulated image signal；
Assembled unit, for demodulating the information sequence in often the going of the modulated image signal, and according to the original graph
As the often capable row serial number of signal, the information sequence in every row is combined as to the transmitted communication information.
It should be noted that the visible light communication reception device of the present embodiment may be used in above method embodiment can
Light-exposed communication means, can be used to implement all the technical solutions in the foregoing method embodiment, the function of each function module
It can be implemented according to the method in above method embodiment, specific implementation process can refer to the correlation in above-described embodiment
Description, details are not described herein again.
Fig. 5 is a kind of structural schematic diagram of one embodiment of visible light communication system provided by the invention.
Referring to Figure 5, visible light communication system provided by the embodiments of the present application, including：
Visible light communication sending device 5 and visible light communication reception device 6；
The optic communication sending device 5 is raw for the communication information transmitted to be modulated in original image signal line by line
At modulated image signal, and the modulated image signal is shown in a manner of progressive scan；
The visible light communication reception device 6 progressively scans the modulation image letter for acquiring modulated image signal
Number, demodulate the communication information in the modulated image signal.
Preferably,
The visible light communication sending device 5 is used to the communication information transmitted being divided into multiple information sequences, according to
The often capable row serial number of the original image signal, each information sequence is embedded into the original image signal, is made described
The embedded information sequence of often row of original image signal, generates modulated image signal；
The visible light communication reception device 6 demodulates the modulation image for progressively scanning the modulated image signal
Information sequence in often the going of signal, and according to the often capable row serial number of the original image signal, by the information sequence in every row
Row are combined as the transmitted communication information.
It should be noted that the visible light in above method embodiment may be used in the visible light communication system of the present embodiment
Communication means can be used to implement all the technical solutions in the foregoing method embodiment, and the function of each function module can be with
According to the method specific implementation in above method embodiment, specific implementation process can refer to the correlation in above-described embodiment and retouch
It states, details are not described herein again.
Therefore the visual light imaging communication means and system proposed by the present invention modulated on line by line basis with detection, it is main
The feature is wanted to include with advantage：
By the design modulated line by line, with behavior unit carrying information, figure is shown in such a way that row scans in display equipment
When as signal, the image frame synchronization of receiving-transmitting sides in time domain is avoided, greatly reduces the requirement of time synchronization in communication.
And receiving terminal is in information extraction, only it needs to be determined that the direction of row on two-dimensional space, you can tire out line by line to signal
Product obtains the one-dimensional signal sequence of carrying information sequence, and receiving-transmitting sides are synchronized without accurate two-dimensional space, greatly reduce sky
Between synchronize influence to communication.
Way and traditional visual light imaging communication means in the present invention is different：
(1) on whole image two-dimensional space, traditional visual light imaging communication is required in information insertion and extraction
The information of a certain region carrying is determined using row coordinate and row coordinate simultaneously；And coordinates regional of mutually going together in the present invention (such as it is same
For line n) information of carrying is identical, and often row carries identical information.It thus can be using a full line come carrying into row information
It takes (judgement).The carry out information extraction of a line a line, it will be able to obtain above-mentioned several advantages.Information refers both in this programme
The content of communications is needed, usually with bit (bit) for base unit.Only it needs to be determined that line direction can the one-dimensional letter of boil down to
Sequence is ceased, the complexity of two-dimensional space synchronization is reduced.
(2) traditional imaging communication is unit carrying information using the complete image of a frame；And allow with behavior in the present invention
Unit carrying information is not necessarily to realize image in the time domain when realizing image frame refreshing by the way of showing that equipment is scanned using row
Frame synchronization reduces the requirement of time synchronization.
It should be noted that this programme is when applied to dynamic image, actually picture material dynamic whether be not critical,
Crucially transferring content is as picture refreshing (still image can equally refresh, and only refresh identical content) is not stopped
Variation.Each row that receiving terminal Polaroid (shooting) obtains may belong to different picture frames, need to obtain the frame at this time
Per a line, but it is not required for Polaroid the first row and occurs completely being owned in the period that a line disappears to the end
Row, but can repeatedly be imaged to obtain, each all imperfect but information extraction of imaging is complete continuous.
For convenience of description, it is divided into various modules when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each module is realized can in the same or multiple software and or hardware when application.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates may or may not be physically separated, the component shown as unit can be or
Person may not be physical unit, you can be located at a place, or may be distributed over multiple network units.It can root
According to actual need that some or all of module therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (6)
1. a kind of visible light communication method, which is characterized in that including：
The communication information transmitted is modulated in original image signal line by line, generates modulated image signal；
The modulated image signal is shown in a manner of progressive scan.
2. according to the method described in claim 1, it is characterized in that, it is described the communication information transmitted is modulated to line by line it is original
In picture signal, modulated image signal is generated, including：
The communication information transmitted is divided into multiple information sequences；
According to the often capable row serial number of the original image signal, each information sequence is embedded into the original image signal
In, make the embedded information sequence of often row of the original image signal, generates modulated image signal.
3. a kind of visible light communication sending device, which is characterized in that including：
Modulation module generates modulated image signal for the communication information transmitted to be modulated in original image signal line by line；
Display module, for showing the modulated image signal in a manner of progressive scan.
4. device according to claim 3, which is characterized in that the modulation module, including：
Division unit, for the communication information transmitted to be divided into multiple information sequences；
Each information sequence is embedded into described by generation unit for the often capable row serial number according to the original image signal
In original image signal, makes the embedded information sequence of often row of the original image signal, generate modulated image signal.
5. a kind of visible light communication system, which is characterized in that including：
Visible light communication sending device and visible light communication reception device；
The optic communication sending device generates modulation for the communication information transmitted to be modulated in original image signal line by line
Picture signal, and the modulated image signal is shown in a manner of progressive scan；
The visible light communication reception device progressively scans the modulated image signal for acquiring modulated image signal, solves
Adjust the communication information in the modulated image signal.
6. system according to claim 5, which is characterized in that
The visible light communication sending device is used to the communication information transmitted being divided into multiple information sequences, according to the original
The often capable row serial number of beginning picture signal, each information sequence is embedded into the original image signal, the original graph is made
As the embedded information sequence of often row of signal, modulated image signal is generated；
The visible light communication reception device demodulates the modulated image signal for progressively scanning the modulated image signal
Information sequence in often going, and according to the often capable row serial number of the original image signal, the information sequence in every row is combined
For the communication information transmitted.
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