CN105099551A - Visual communication method and system based on visible light communication - Google Patents

Visual communication method and system based on visible light communication Download PDF

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Publication number
CN105099551A
CN105099551A CN201410204527.6A CN201410204527A CN105099551A CN 105099551 A CN105099551 A CN 105099551A CN 201410204527 A CN201410204527 A CN 201410204527A CN 105099551 A CN105099551 A CN 105099551A
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data
array
road
modulating
module
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迟楠
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Fudan University
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Fudan University
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Abstract

The invention relates to the field of visible light communication, and discloses a visual communication method and a system based on visible light communication. The method includes: received original data is modulated to modulation data at an emitting terminal; the modulation data is coded to coded data; the coded data is arranged to arranged data in accordance with the specification of an emitter array; positioning information is added into the arranged data; the arranged data with the added positioning information is quantified to levels, and the levels are converted to images displayed in the emitter array; the images emitted by the emitter array are detected at a receiving terminal; the detected images are converted to the levels according to the positioning information, and the levels are quantified to the arranged data with the added positioning information; the positioning information in the arranged data with the added positioning information is removed; the arranged data without the positioning information is re-arranged to the coded data; the coded data is decoded to the modulation data; and the modulation data is demodulated to the original data. According to the method and the system, a lot of data can be simultaneously transmitted, and the data transmission rate is increased.

Description

Based on the visual communication method and system of visible light communication
Technical field
The present invention relates to visible light communication field, particularly based on the visual communication method and system of visible light communication.
Background technology
Single led reflector is used to carry out transmitting data in prior art, this LED emitter its own transmission frequency is very high, so single led reflector just can reach very high message transmission rate, but, due to the mobile phone that we can often use, first-class filming frequency of making a video recording is lower, even if the message transmission rate of single led reflector is very high, because the amount of single led reflector transmission data is limited, if there are a lot of data to need transmission, once can only transmit limited data volume, needing many times could by all data Successful transmissions needing transmission, so just indirectly limit the raising of message transmission rate.Such as we often can use the camera scanning Quick Response Code of mobile phone, because the filming frequency of mobile phone camera is lower, on the time, frame number is limited, cannot realize highspeed serial data stream.
Summary of the invention
The object of the present invention is to provide a kind of visual communication method and system based on visible light communication, make it possible to transferring large number of data simultaneously, trade space for time, it is parallel for becoming serial, improves the speed of transfer of data.
For solving the problems of the technologies described above, the invention provides a kind of visual communication method based on visible light communication, comprising following steps:
At transmitting terminal, the initial data received is modulated into modulating data;
Described modulating data is encoded into coded data;
Described coded data is arranged in the array data meeting transmitter array specification;
Locating information is added in described array data;
The described array data adding locating information is quantized into color range, and described color range is changed into image and be shown in described transmitter array;
At receiving terminal, detect the described image that described transmitter array is launched;
Change the described image detected into described color range according to described locating information, and add the array data of locating information described in described color range being quantified as;
The locating information in the array data of locating information is added described in removal;
The described array data eliminating locating information is rearranged to described coded data;
Described coded data is decoded as described modulating data;
Described modulating data is demodulated to described initial data.
Present invention also offers a kind of visual communication system based on visible light communication, comprise: transmitting terminal and receiving terminal; Described transmitting terminal comprises data reception module, modulation module, coding module, and arrangement module, adds locating information module, the first quantization modules, image-forming module, display module and transmitter array; Described receiving terminal comprises receiver array, image transition module, the second quantization modules, removes locating information module, reordering module, decoder module and demodulation module;
At described transmitting terminal, the initial data that described data reception module receives is modulated into modulating data by described modulation module; Described modulating data is encoded into coded data by described coding module; Described modulating data is arranged in the array data meeting described transmitter array specification by described arrangement module, described in add locating information module add locating information in described array data; The described array data adding locating information is quantized into color range by described first quantization modules; Described image-forming module changes described color range into image; Described image is shown in described transmitter array by described display module;
At described receiving terminal, described receiver array detects the described image that described transmitter array is launched; The described image detected is transformed into described color range according to described locating information by described image transition module; The array data of locating information is added described in described color range is quantified as by described second quantization modules; Described removal locating information module removes the described locating information in described array data, and the described array data eliminating locating information is rearranged to described coded data by described reordering module; Described coded data is decoded as described modulating data by described decoder module, and described modulating data is demodulated to described initial data by described demodulation module.
In the present invention, transmitting terminal can by the initial data modulating-coding received after arrange, be arranged in the array data meeting transmitter array specification, so that will the initial data of transmission be needed to be arranged in and the array data one to one of the LED in transmitter array, then in this array data, add locating information generate coded data, the object adding locating information is equivalent to array data to number, changing into after image in order to successive arrangement data can not mess code, be the image accurately wanted, add locating information in array data after, the array data that this can be added locating information is quantized into color range, and then this color range is transformed into image is shown in transmitter array, the inverse process of transmitting terminal afterwards in the course of work of receiving terminal, in terms of existing technologies, LED emitter in the present invention is transmitter array, comprise multiple lines and multiple rows LED emitter, so initial data can be transmitted by this multiple lines and multiple rows LED emitter simultaneously, being equivalent to initial data in prior art can only by a LED emitter transmission, if the data volume of initial data is larger, exceed the transmission upper limit of a LED emitter, relatively will extend the transmission time all could transfer out initial data, and the coded data that in the present invention, initial data is formed after coding can be transmitted by the transmitter array with multiple lines and multiple rows, because this coded data can be arranged in the array data that meets transmitter array specification and add locating information, so the data volume using method of the present invention once to transmit is larger, trade space for time, saving the transmission time namely improves transmission rate, in addition, even if the amount of initial data is not more than the transmission upper limit of a LED emitter, the present invention also can be higher than transmission rate of the prior art a lot, also be because coded data can be arranged in the array data meeting transmitter array specification by the present invention, and add locating information, transmitted by transmitter array again like this, be namely equivalent to that the initial data of serial is transformed into parallel initial data and transmit simultaneously, it is parallel for becoming serial, also greatly can promote the transmission rate of data, so the present invention, relative to prior art, not only substantially reduces the time of transfer of data, also greatly increases the amount once transmitting data.
Preferably, at described transmitting terminal, if described initial data is a road, then
At described transmitting terminal, described, modulating data is encoded in the step of coded data, comprises following sub-step: described modulating data is divided into the modulating data group meeting transmitter array specification; Described modulating data group coding is become coded data groups; Coded data is arranged in the step of the array data meeting transmitter array specification described, described coded data groups is arranged in the array data meeting described transmitter array specification;
At described receiving terminal, the array data eliminating locating information is rearranged in the step of described coded data described, the described array data eliminating locating information is rearranged to described coded data groups; Coded data is decoded as in the step of described modulating data described, comprises following sub-step: described coded data groups is decoded as described modulating data group; Described modulating data group is merged into described modulating data.
Method in the present invention once can transmission of one line initial data, in order to improve message transmission rate, when encoding to this initial data, modulating data can be divided into the modulating data group meeting transmitter array specification, and then these modulating data group codings are become coded data groups, and this coded data groups is arranged in the array data meeting transmitter array specification, method according to the present invention completes the transmission to above-mentioned initial data afterwards, namely realizes the transmission that serial initial data is transformed into parallel initial data; Such as, if transmitter array has 10 row 10 to arrange in the present invention, then in the present invention, the transmission rate of initial data can be 100 times when only having a LED emitter in prior art.
Preferably, if described initial data is N road, described N be greater than 1 positive integer, then
At described transmitting terminal, then the initial data received is being modulated in the step of modulating data, the described N road initial data received is being modulated into N road modulating data; Described, modulating data is encoded in the step of coded data, described N road modulating data is encoded into N road coded data; Coded data is arranged in the step of the array data meeting transmitter array specification described, described N road coded data is arranged in the array data meeting transmitter array specification; Described, described color range is changed in the step of image, change described color range into N number of image;
At described receiving terminal, in the step of the described image of described detection transmitter array transmitting, detect described N number of image that described transmitter array is launched; According to locating information, the described image detected is changed in the step of described color range described, change the described N number of image detected into described color range according to described locating information; The array data eliminating locating information is rearranged in the step of described coded data described, the described array data eliminating locating information is rearranged to described N road coded data; Described coded data is decoded as in the step of described modulating data described, described N road coded data is decoded as described N road modulating data; Modulating data is demodulated in the step of described initial data described, described N road modulating data is demodulated to described N road initial data.
Method in the present invention once can transmit multichannel initial data, because the multiplex coding data arrangement after coding can first be become to meet the array data of transmitter array specification by this method, and then method according to the present invention completes the transmission to above-mentioned initial data; If initial data has 10 tunnels, and the time of transmitting 1 tunnel initial data is 1 second, then when using 1 LED emitter in prior art, at least need the time of 10 seconds data all could be transmitted, and using the method in the present invention, 10 tunnel initial data can be transmitted simultaneously, at most only need 1 second.
Preferably, if described initial data is N road, described N be greater than 1 positive integer, then at described transmitting terminal, then the initial data received is being modulated in the step of modulating data, the described N road initial data received is being modulated into N road modulating data; Described, modulating data is encoded in the step of coded data, comprises following sub-step: each the road modulating data in the modulating data of described N road is all divided into M group modulating data, and this N road M group modulating data meets the specification of described transmitter array; Described N road M group modulating data is encoded into N road M group coding data; Coded data is arranged in the step of the array data meeting transmitter array specification described, described N road M group coding data arrangement is become to meet the array data of transmitter array specification; Described, color range is changed in the step of image, change described color range into N number of image;
At described receiving terminal, in the step of the described image of described detection transmitter array transmitting, detect described N number of image that described transmitter array is launched; According to locating information, the described image detected is changed in the step of described color range described, change the described N number of image detected into described color range according to described locating information; The array data eliminating locating information is rearranged in the step of described coded data described, the described array data eliminating locating information is rearranged to described N road M group coding data; Coded data is decoded as in the step of described modulating data described, comprises following sub-step: be described N road M group modulating data by the M group coding data decode of described N road; Described N road M group modulating data is merged into described N road modulating data; Modulating data is demodulated in the step of described initial data described, described N road modulating data is demodulated to described N road initial data.
If the initial data in the present invention is 10 tunnels, after Jiang Zhe 10 tunnel initial data is modulated into 10 road modulating datas, when Dui Zhe 10 road modulating data is encoded, if encoded to it again after the every 1 road modulating data again in the modulating data of Jiang Zhe 10 road is all divided into 10 groups of modulating datas, then will become 10 tunnel 10 group coding data, and then Jiang Zhe 10 tunnel 10 group coding data arrangement become meet the array data of transmitter array specification after transmit according to the method in the present invention is disposable, significantly will shorten data transmission period further.
Preferably, the mode of described modulation be in quadrature amplitude modulation QAM or Quadrature Phase Shift Keying QPSK any one.
Preferably, described color range is 0 ~ 255 or (0 ~ 255) × 3.
Method and system in the present invention, not only can transmit gray scale picture, all right transmitting color picture, the color range 0 ~ 255 of gray scale picture, and colour picture is because there is RGB three tunnel, so the color range of colour picture is multiplied by 3 for (0 ~ 255).
Preferably, if described initial data is 2-D data, then the size of the initial data of described method transmission per second is: the frame number of the columns × 2K of the line number × described array data of described array data × per second.
Take initial data as 2-D data be example, the size of the 2-D data that can transmit in the present invention is the columns that after coding, the line number of array data is multiplied by array data, be multiplied by 2 kilobytes again, finally be multiplied by frame number per second again, certainly, the line number of array data and columns can also be increased by coding, and the line number of transmitter array and columns also can increase accordingly, use the data volume of the method transmission per second in the present invention can continue to increase like this.
Accompanying drawing explanation
Fig. 1 is according to the visual communication method flow diagram based on visible light communication in first embodiment of the invention;
Fig. 2 uses in first embodiment of the invention based on the gray-scale map that the visual communication method of visible light communication is transmitted;
Fig. 3 is according to the visual communication method flow diagram based on visible light communication in third embodiment of the invention;
Fig. 4 is according to the visual communication method flow diagram based on visible light communication in four embodiment of the invention;
Fig. 5 is according to the visual communication system schematic diagram based on visible light communication in second embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.But, persons of ordinary skill in the art may appreciate that in each execution mode of the present invention, proposing many ins and outs to make reader understand the application better.But, even without these ins and outs with based on the many variations of following execution mode and amendment, each claim of the application technical scheme required for protection also can be realized.
First execution mode of the present invention relates to a kind of visual communication method based on visible light communication.Idiographic flow as shown in Figure 1.
Step 101: at transmitting terminal, is modulated into modulating data by the initial data received.
In present embodiment, the mode of above-mentioned modulation can be quadrature amplitude modulation (QuadratureAmplitudeModulation, QAM) or Quadrature Phase Shift Keying (QuadraturePhaseShiftKeying, QPSK), other modulation system can also be selected.
Step 102: above-mentioned modulating data is encoded into coded data.
Step 103: coded data is arranged in the array data meeting transmitter array specification.
This coded data is arranged in the array data meeting transmitter array specification, so that will the initial data of transmission be needed to be arranged in and the array data one to one of the LED in transmitter array.In present embodiment, above-mentioned transmitter array is LED array or visible ray display screen; And this visible ray display screen can be TV, outdoor large-size screen monitors or projecting apparatus.
Step 104: add locating information in above-mentioned array data.
The object adding locating information is equivalent to array data to number, and changing into after image in order to successive arrangement data can not mess code, is the image accurately wanted.
Step 105: the array data adding locating information is quantized into color range, and change color range into image and be shown in transmitter array.
In the present embodiment, not only can transmit gray scale picture, as shown in Figure 2, all right transmitting color picture, the color range 0 ~ 255 of gray scale picture, colour picture is because there is RGB (RedGreenBlue, RGB) three tunnel, so the color range of colour picture is multiplied by 3 for (0 ~ 255).
Step 106: at receiving terminal, detects the image that transmitter array is launched.
Step 107: change the image detected into color range according to locating information, and color range is quantified as the array data adding locating information.
Step 108: remove the locating information added in the array data of locating information.
Step 109: the array data eliminating locating information is rearranged to coded data.
Step 110: coded data is decoded as modulating data.
Step 111: modulating data is demodulated to initial data.
Above-mentioned steps 107,108,109,110 and 111 be respectively step 105,104,103, the inverse process of 102 and 101, it will be appreciated by those skilled in the art that, adding locating information with removal locating information, Code And Decode, modulation and demodulation is mutual inverse process, does not repeat herein.
It is worth mentioning that, in present embodiment, if taking initial data as 2-D data is example, the size of the 2-D data that can transmit per second of the method in the present invention is: after coding, the line number of array data is multiplied by the columns of array data, be multiplied by 2 kilobytes again, finally be multiplied by frame number per second again, certainly, the line number of array data and columns can also be increased by coding, the line number of transmitter array and columns also can increase accordingly, use the data volume of the method transmission per second in the present invention can continue to increase like this.Put it briefly, we show a pictures, to its shooting, just have corresponding information after decoding.Then we show a string picture stream, such as 100 frames per second, the information just on energy transmission per second 100 times of images.
So far, whole process terminates.
In present embodiment, transmitting terminal can by the initial data modulating-coding received after arrange, be arranged in the array data meeting transmitter array specification, so that will the initial data of transmission be needed to be arranged in and the array data one to one of the LED in transmitter array, then in this array data, add locating information generate coded data, the object adding locating information is equivalent to array data to number, changing into after image in order to successive arrangement data can not mess code, be the image accurately wanted, add locating information in array data after, the array data that this can be added locating information is quantized into color range, and then this color range is transformed into image is shown in transmitter array, the inverse process of transmitting terminal afterwards in the course of work of receiving terminal, in terms of existing technologies, LED emitter in present embodiment is transmitter array, comprise multiple lines and multiple rows LED emitter, so initial data can be transmitted by this multiple lines and multiple rows LED emitter simultaneously, being equivalent to initial data in prior art can only by a LED emitter transmission, if the data volume of initial data is larger, exceed the transmission upper limit of a LED emitter, relatively will extend the transmission time all could transfer out initial data, and the coded data that in present embodiment, initial data is formed after coding can be transmitted by the transmitter array with multiple lines and multiple rows, because this coded data can be arranged in the array data that meets transmitter array specification and add locating information, so the data volume using the method for present embodiment once to transmit is larger, trade space for time, saving the transmission time namely improves transmission rate, in addition, even if the amount of initial data is not more than the transmission upper limit of a LED emitter, present embodiment also can be higher than transmission rate of the prior art a lot, also be because coded data can be arranged in the array data meeting transmitter array specification by the present invention, and add locating information, transmitted by transmitter array again like this, be namely equivalent to that the initial data of serial is transformed into parallel initial data and transmit simultaneously, it is parallel for becoming serial, also greatly can promote the transmission rate of data, so present embodiment, relative to prior art, not only substantially reduces the time of transfer of data, also greatly increases the amount once transmitting data.
Second embodiment of the invention relates to a kind of visual communication method based on visible light communication, present embodiment is a specific embodiment of the first execution mode, in present embodiment, a road is defined as in the initial data of transmitting terminal transmission, then in a step 102, need first modulating data to be divided into the modulating data group meeting transmitter array specification, then this modulating data group coding is become coded data groups; In step 103, be above-mentioned coded data groups will be arranged in the array data meeting transmitter array specification.At receiving terminal, namely in step 109, be that the array data eliminating locating information is rearranged to coded data groups, be first coded data groups will be decoded as modulating data group in step 110, then modulating data group is merged into modulating data; Except the above-mentioned step mentioned, other step in present embodiment is all identical with the step in the first execution mode, in order to reduce repetition, repeats no more herein.
Method in present embodiment once can transmission of one line initial data, in order to improve message transmission rate, when encoding to this initial data, modulating data can be divided into the modulating data group meeting transmitter array specification, and then these modulating data group codings are become coded data groups, and this coded data groups is arranged in the array data meeting transmitter array specification, method according to the present invention completes the transmission to above-mentioned initial data afterwards, namely realizes the transmission that serial initial data is transformed into parallel initial data; If transmitter array has 10 row 10 to arrange in the present invention, then in present embodiment, the transmission rate of initial data can be 100 times when only having a LED emitter in prior art.
Third embodiment of the invention relates to a kind of visual communication method based on visible light communication, present embodiment is also a specific embodiment of the first execution mode, in the present embodiment, N road is defined as in the initial data of transmitting terminal transmission, and N be greater than 1 positive integer, then the idiographic flow of present embodiment as shown in Figure 3, comprises following steps:
Step 301: at transmitting terminal, is modulated into N road modulating data by the N road initial data received.
Step 302: above-mentioned N road modulating data is encoded into N road coded data.
Step 303: above-mentioned N road coded data is arranged in the array data meeting transmitter array specification.
Step 304: add locating information in above-mentioned array data.
Step 305: the above-mentioned array data adding locating information is quantized into color range, and change above-mentioned color range into N number of image and be shown in transmitter array.
Step 306: at receiving terminal, detects N number of image that transmitter array is launched.
Step 307: change the above-mentioned N number of image detected into color range according to above-mentioned locating information, and this color range is quantified as the array data adding locating information.
Step 308: remove the above-mentioned locating information added in the array data of locating information.
Step 309: the above-mentioned array data eliminating locating information is rearranged to N road coded data.
Step 310: above-mentioned N road coded data is decoded as N road modulating data.
Step 311: above-mentioned N road modulating data is demodulated to N road initial data.
So far, whole process terminates.
Method in present embodiment once can transmit multichannel initial data, because the multiplex coding data arrangement after coding can first be become to meet the array data of transmitter array specification by this method, and then method according to the present invention completes the transmission to above-mentioned initial data, be equivalent to the initial data of multi-path serial be changed into the parallel initial data in a road; If initial data has 10 tunnels, and the time of transmitting 1 tunnel initial data is the words of 1 second, when then using 1 LED emitter in prior art, at least need the time of 10 seconds data all could be transmitted, and using the method in present embodiment, 10 tunnel initial data can be transmitted simultaneously, at most only need 1 second, so just not only improve the transmission rate of data, too increase the amount once transmitting data.
Four embodiment of the invention relates to a kind of visual communication method based on visible light communication, present embodiment is the further improvement of the 3rd execution mode, main improvements are, in present embodiment, N road initial data generates N road modulating data after ovennodulation, this N road modulating data is being encoded in the process of N road coded data, first be each the road modulating data in this N road modulating data is divided into M group (this M be more than or equal to 1 positive integer), and this N road M group modulating data meets the specification of transmitter array, and then this N road M group modulating data is encoded and subsequent treatment.Idiographic flow as shown in Figure 4, wherein, step 401,405 ~ 409 and 413 with the step 301 in third embodiment of the invention, 304 ~ 308 and 311 identical, repeating not repeat to reduce herein, will focus on below to describe step 402 ~ 404 and 410 ~ 412.
Step 402: each the road modulating data in the modulating data of above-mentioned N road is all divided into M group modulating data, and this N road M group modulating data meets the specification of transmitter array.
Step 403: above-mentioned N road M group modulating data is encoded into N road M group coding data.
Step 404: the array data above-mentioned N road M group coding data arrangement being become to meet transmitter array specification.
Step 410: the above-mentioned array data eliminating locating information is rearranged to N road M group coding data.
Step 411: be N road M group modulating data by the M group coding data decode of above-mentioned N road.
Step 412: above-mentioned N road M group modulating data is merged into N road modulating data.
So far, whole process terminates.
Method in present embodiment once also can transmit multichannel initial data, such as, initial data in present embodiment is 10 tunnels, after Jiang Zhe 10 tunnel initial data is modulated into 10 road modulating datas, when Dui Zhe 10 road modulating data is encoded, if encoded to it again after the every 1 road modulating data again in the modulating data of Jiang Zhe 10 road is all divided into 10 groups of modulating datas, then will become 10 tunnel 10 group coding data, and then Jiang Zhe 10 tunnel 10 group coding data arrangement become meet the array data of transmitter array specification after transmit according to the method in the present invention is disposable, compared with the 3rd execution mode, significantly will shorten data transmission period further.
The step of method divides above, just in order to be described clearly, can merge into a step or splitting some step, being decomposed into multiple step, when realizing as long as comprise identical logical relation, all in the protection range of this patent.
Fifth embodiment of the invention relates to a kind of visual communication system based on visible light communication, as shown in Figure 5, comprises: transmitting terminal and receiving terminal; Transmitting terminal comprises data reception module, modulation module, coding module, and arrangement module, adds locating information module, the first quantization modules, image-forming module, display module and transmitter array; Receiving terminal comprises receiver array, image transition module, the second quantization modules, removes locating information module, reordering module, decoder module and demodulation module;
At transmitting terminal, the initial data that data reception module receives by modulation module is modulated into modulating data; Modulating data is encoded into coded data by coding module; Modulating data is arranged in the array data meeting transmitter array specification by arrangement module, adds locating information module and add locating information in array data; The array data adding locating information is quantized into color range by the first quantization modules; Image-forming module changes color range into image; Image is shown in transmitter array by display module;
At receiving terminal, receiver array detects the image that transmitter array is launched; The image detected is transformed into color range according to locating information by image transition module; Color range is quantified as the array data adding locating information by the second quantization modules; Remove the locating information in locating information module removal array data, the array data eliminating locating information is rearranged to coded data by reordering module; Coded data is decoded as modulating data by decoder module, and modulating data is demodulated to initial data by demodulation module.
Above-mentioned receiver array is intrinsic photodiode PIN detector array, avalanche diode APD detector array, the video camera of charge coupled device ccd or the video camera of complementary metal oxide semiconductors (CMOS) CMOS.
In addition, the visible ray launched due to transmitting terminal has divergence characterization, realize long-distance transmissions, light collecting element can be prevented in receiving terminal front end, image formation prism in such as Fig. 5, carries out optically focused to the utilizing emitted light of transmitting terminal, thus produces one by the focousing field actually observed, image formation prism can make the package dimension of receiving terminal diminish, and the receiver array of receiving terminal also can be made to be designed to the planar structure being easy to expand.
Be not difficult to find, present embodiment is the system embodiment corresponding with the first execution mode, and present embodiment can be worked in coordination with the first execution mode and be implemented.The relevant technical details mentioned in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the first execution mode.
Sixth embodiment of the invention relates to a kind of visual communication system based on visible light communication, present embodiment is a specific embodiment of the 5th execution mode, in present embodiment, a road is defined as in the initial data of transmitting terminal transmission, then at transmitting terminal, the first division submodule and the first encoding submodule is also comprised in coding module, first divides submodule is used for modulating data being divided into the modulating data group meeting transmitter array specification, and the first encoding submodule is used for modulating data group coding to become coded data groups; Arrangement module is also for being arranged in the array data meeting transmitter array specification by coded data groups;
At receiving terminal, remove module also for the array data eliminating locating information is rearranged to coded data groups; Also comprise the first decoding sub-module and first in decoder module and merge submodule, the first decoding sub-module is used for coded data groups to be decoded as modulating data group, and first merges submodule is used for modulating data group to merge into modulating data.
Be not difficult to find, present embodiment is the system embodiment corresponding with the second execution mode, and present embodiment can be worked in coordination with the second execution mode and be implemented.The relevant technical details mentioned in second execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the second execution mode.
Seventh embodiment of the invention relates to a kind of visual communication system based on visible light communication, present embodiment is another specific embodiment of the 5th execution mode, in present embodiment, initial data is N road, and N be greater than 1 positive integer, then at transmitting terminal, modulation module is also for being modulated into N road modulating data by the N received road initial data; Coding module is also for being encoded into N road coded data by N road modulating data; Arrangement module is also for being arranged in N road coded data the array data meeting transmitter array specification; Image image-forming module is also for changing color range into N number of image; Display module is also for being shown in transmitter array by N number of image;
At receiving terminal, receiver array is also for detecting N number of image that transmitter array is launched; Image transition module is also for changing the N number of image detected into color range according to locating information; Reordering module is also for being rearranged to N road coded data by the array data eliminating locating information; Decoder module is also for being decoded as N road modulating data by N road coded data; Demodulation module is also for being demodulated to N road initial data by N road modulating data.
Be not difficult to find, present embodiment is the system embodiment corresponding with the 3rd execution mode, and present embodiment can be worked in coordination with the 3rd execution mode and be implemented.The relevant technical details mentioned in 3rd execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the 3rd execution mode.
Eighth embodiment of the invention relates to a kind of visual communication system based on visible light communication, present embodiment is the further improvement of the 7th execution mode, in present embodiment, initial data is also N road, at transmitting terminal, modulation module is also for being modulated into N road modulating data by the N received road initial data; Coding module also comprises the second division submodule and the second encoding submodule, second divides submodule is used for each the road modulating data in the modulating data of N road to be all divided into M group modulating data, and this N road M group modulating data meets the specification of transmitter array, wherein, M be more than or equal to 1 positive integer, the second encoding submodule be used for N road M group modulating data is encoded into N road M group coding data; Arrangement module is also for becoming to meet the array data of transmitter array specification by N road M group coding data arrangement; Image-forming module is also for changing described color range into N number of image;
At receiving terminal, receiver array is also for detecting N number of image that transmitter array is launched; Image transition module is also for changing the N number of image detected into color range according to locating information; Reordering module is also for being rearranged to N road M group coding data group by the array data eliminating locating information; Also comprise the second decoding sub-module and second in decoder module and merge submodule, it is N road M group modulating data that the second decoding sub-module is used for the M group coding data decode of N road, and second merges submodule is used for N road M group modulating data to merge into N road modulating data; Demodulation module is also for being demodulated to N road initial data by N road modulating data.
Be not difficult to find, present embodiment is the system embodiment corresponding with the 4th execution mode, and present embodiment can be worked in coordination with the 4th execution mode and be implemented.The relevant technical details mentioned in 4th execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the 4th execution mode.
It is worth mentioning that, each module involved in above-mentioned 5th, six, seven and eight execution modes is logic module, and in actual applications, a logical block can be a physical location, also can be a part for a physical location, can also realize with the combination of multiple physical location.In addition, in order to outstanding innovative part of the present invention, the unit not too close with solving technical problem relation proposed by the invention is not introduced in present embodiment, but this does not show the unit that there is not other in present embodiment.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above realize specific embodiments of the invention, and in actual applications, various change can be done to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims (14)

1., based on a visual communication method for visible light communication, it is characterized in that, comprise following steps:
At transmitting terminal, the initial data received is modulated into modulating data;
Described modulating data is encoded into coded data;
Described coded data is arranged in the array data meeting transmitter array specification;
Locating information is added in described array data;
The described array data adding locating information is quantized into color range, and described color range is changed into image and be shown in described transmitter array;
At receiving terminal, detect the described image that described transmitter array is launched;
Change the described image detected into described color range according to described locating information, and add the array data of locating information described in described color range being quantified as;
The locating information in the array data of locating information is added described in removal;
The described array data eliminating locating information is rearranged to described coded data;
Described coded data is decoded as described modulating data;
Described modulating data is demodulated to described initial data.
2. the visual communication method based on visible light communication according to claim 1, is characterized in that, at described transmitting terminal, if described initial data is a road, then
At described transmitting terminal, described, modulating data is encoded in the step of coded data, comprises following sub-step:
Described modulating data is divided into the modulating data group meeting transmitter array specification;
Described modulating data group coding is become coded data groups;
Coded data is arranged in the step of the array data meeting transmitter array specification described, described coded data groups is arranged in the array data meeting described transmitter array specification;
At described receiving terminal, the array data eliminating locating information is rearranged in the step of described coded data described, the described array data eliminating locating information is rearranged to described coded data groups;
Coded data is decoded as in the step of described modulating data described, comprises following sub-step:
Described coded data groups is decoded as described modulating data group;
Described modulating data group is merged into described modulating data.
3. the visual communication method based on visible light communication according to claim 1, is characterized in that, if described initial data is N road, described N be greater than 1 positive integer, then
At described transmitting terminal, then the initial data received is being modulated in the step of modulating data, the described N road initial data received is being modulated into N road modulating data;
Described, modulating data is encoded in the step of coded data, described N road modulating data is encoded into N road coded data;
Coded data is arranged in the step of the array data meeting transmitter array specification described, described N road coded data is arranged in the array data meeting transmitter array specification;
Described, described color range is changed in the step of image, change described color range into N number of image;
At described receiving terminal, in the step of the described image of described detection transmitter array transmitting, detect described N number of image that described transmitter array is launched;
According to locating information, the described image detected is changed in the step of described color range described, change the described N number of image detected into described color range according to described locating information;
The array data eliminating locating information is rearranged in the step of described coded data described, the described array data eliminating locating information is rearranged to described N road coded data;
Described coded data is decoded as in the step of described modulating data described, described N road coded data is decoded as described N road modulating data;
Modulating data is demodulated in the step of described initial data described, described N road modulating data is demodulated to described N road initial data.
4. the visual communication method based on visible light communication according to claim 1, is characterized in that, if described initial data is N road, described N be greater than 1 positive integer, then
At described transmitting terminal, then the initial data received is being modulated in the step of modulating data, the described N road initial data received is being modulated into N road modulating data;
Described, modulating data is encoded in the step of coded data, comprises following sub-step:
Each road modulating data in the modulating data of described N road is all divided into M group modulating data, and this N road M group modulating data meets the specification of described transmitter array;
Described N road M group modulating data is encoded into N road M group coding data;
Coded data is arranged in the step of the array data meeting transmitter array specification described, described N road M group coding data arrangement is become to meet the array data of transmitter array specification;
Described, color range is changed in the step of image, change described color range into N number of image;
At described receiving terminal, in the step of the described image of described detection transmitter array transmitting, detect described N number of image that described transmitter array is launched;
According to locating information, the described image detected is changed in the step of described color range described, change the described N number of image detected into described color range according to described locating information;
The array data eliminating locating information is rearranged in the step of described coded data described, the described array data eliminating locating information is rearranged to described N road M group coding data;
Coded data is decoded as in the step of described modulating data described, comprises following sub-step:
It is described N road M group modulating data by the M group coding data decode of described N road;
Described N road M group modulating data is merged into described N road modulating data;
Modulating data is demodulated in the step of described initial data described, described N road modulating data is demodulated to described N road initial data.
5. the visual communication method based on visible light communication according to claim 1, is characterized in that, described transmitter array is LED array or visible ray display screen.
6. the visual communication method based on visible light communication according to claim 5, is characterized in that, described visible ray display screen is TV, outdoor large-size screen monitors or projecting apparatus.
7. the visual communication method based on visible light communication according to claim 1, is characterized in that, the mode of described modulation is one of any in quadrature amplitude modulation QAM or Quadrature Phase Shift Keying QPSK.
8. the visual communication method based on visible light communication according to claim 1, is characterized in that, described color range is 0 ~ 255 or (0 ~ 255) × 3.
9. the visual communication method based on visible light communication according to claim 1, it is characterized in that, if described initial data is 2-D data, then the size of the initial data of described method transmission per second is: the frame number of columns × 2 kilobytes of the line number × described array data of described array data × per second.
10. based on a visual communication system for visible light communication, it is characterized in that, comprise: transmitting terminal and receiving terminal; Described transmitting terminal comprises data reception module, modulation module, coding module, and arrangement module, adds locating information module, the first quantization modules, image-forming module, display module and transmitter array; Described receiving terminal comprises receiver array, image transition module, the second quantization modules, removes locating information module, reordering module, decoder module and demodulation module;
At described transmitting terminal, the initial data that described data reception module receives is modulated into modulating data by described modulation module; Described modulating data is encoded into coded data by described coding module; Described modulating data is arranged in the array data meeting described transmitter array specification by described arrangement module, described in add locating information module add locating information in described array data; The described array data adding locating information is quantized into color range by described first quantization modules; Described image-forming module changes described color range into image; Described image is shown in described transmitter array by described display module;
At described receiving terminal, described receiver array detects the described image that described transmitter array is launched; The described image detected is transformed into described color range according to described locating information by described image transition module; The array data of locating information is added described in described color range is quantified as by described second quantization modules; Described removal locating information module removes the described locating information in described array data, and the described array data eliminating locating information is rearranged to described coded data by described reordering module; Described coded data is decoded as described modulating data by described decoder module, and described modulating data is demodulated to described initial data by described demodulation module.
11. visual communication systems based on visible light communication according to claim 10, is characterized in that, if described initial data is a road, then
At described transmitting terminal, the first division submodule and the first encoding submodule is also comprised in described coding module, described first divides submodule is used for described modulating data being divided into the modulating data group meeting transmitter array specification, and described first encoding submodule is used for described modulating data group coding to become coded data groups; Described arrangement module is also for being arranged in the array data meeting described transmitter array specification by described coded data groups;
At described receiving terminal, described removal module is also for being rearranged to described coded data groups by the described array data eliminating locating information; Also comprise the first decoding sub-module and first in described decoder module and merge submodule, described first decoding sub-module is used for described coded data groups to be decoded as described modulating data group, and described first merges submodule is used for described modulating data group to merge into described modulating data.
12. visual communication systems based on visible light communication according to claim 10, is characterized in that, if described initial data is N road, described N be greater than 1 positive integer, then
At described transmitting terminal, described modulation module is also for being modulated into N road modulating data by the described N road received initial data; Described coding module is also for being encoded into N road coded data by described N road modulating data; Described arrangement module is also for being arranged in described N road coded data the array data meeting transmitter array specification; Described image image-forming module is also for changing described color range into N number of image; Described display module is also for being shown in described transmitter array by described N number of image;
At described receiving terminal, described receiver array is also for detecting described N number of image that described transmitter array is launched; Described image transition module is also for changing the described N number of image detected into described color range according to described locating information; Described reordering module is also for being rearranged to described N road coded data by the described array data eliminating locating information; Described decoder module is also for being decoded as described N road modulating data by described N road coded data; Described demodulation module is also for being demodulated to described N road initial data by described N road modulating data.
13. visual communication systems based on visible light communication according to claim 10, is characterized in that, if described initial data is N road, described N be greater than 1 positive integer, then
At described transmitting terminal, described modulation module is also for being modulated into N road modulating data by the described N road received initial data; Described coding module also comprises the second division submodule and the second encoding submodule, described second divides submodule is used for each the road modulating data in the modulating data of described N road to be all divided into M group modulating data, and this N road M group modulating data meets the specification of described transmitter array, wherein, M be more than or equal to 1 positive integer, described second encoding submodule be used for described N road M group modulating data is encoded into N road M group coding data; Described arrangement module is also for becoming to meet the array data of transmitter array specification by described N road M group coding data arrangement; Described image-forming module is also for changing described color range into N number of image;
At described receiving terminal, described receiver array is also for detecting described N number of image that described transmitter array is launched; Described image transition module is also for changing the described N number of image detected into described color range according to described locating information; Described reordering module is also for being rearranged to described N road M group coding data group by the described array data eliminating locating information; Also comprise the second decoding sub-module and second in described decoder module and merge submodule, it is described N road M group modulating data that described second decoding sub-module is used for the M group coding data decode of described N road, and described second merges submodule is used for described N road M group modulating data to merge into described N road modulating data; Described demodulation module is also for being demodulated to described N road initial data by described N road modulating data.
14. visual communication systems based on visible light communication according to claim 10, it is characterized in that, described receiver array is intrinsic photodiode PIN detector array, avalanche diode APD detector array, the video camera of charge coupled device ccd or the video camera of complementary metal oxide semiconductors (CMOS) CMOS.
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