CN104410454B - Visible light signal emission control method, launch control unit and transmitting equipment - Google Patents
Visible light signal emission control method, launch control unit and transmitting equipment Download PDFInfo
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Abstract
The embodiment of the present application provides a kind of visible light signal emission control method, launch control unit and transmitting equipment.Methods described includes：Determine the performance parameter of receiving terminal；Display feature when performance parameter and display device according at least to the receiving terminal show an at least image, it is determined that the transmission power of at least one information to be transmitted；The optical signal of the corresponding information to be transmitted of the transmission power has been modulated according to transmission power control transmitting.The method and device of each embodiment of the application determines the transmission power of visible light signal according to the display feature of display device and the transmission requirement of information to be transmitted of the controllable colour carrier optical signal of the color for sending multi-frequency mixing, to realize being provided the foundation as the utilization rate and relatively low light source energy consumption of the resource higher of the visible light communication of carrier signal using the controllable colored optical signal of the color of multi-frequency mixing.
Description
Technical field
Each embodiment of the application is related to technical field of visible light communication, more particularly to a kind of visible light signal emission control side
Method, launch control unit and transmitting equipment.
Background technology
Visible light communication (Visible Light Communication, VLC) is the light using visible light wave range as letter
The carrier propagated is ceased, it is logical come the wireless optical of transmission information to send the imperceptible high speed light and shade blinking light of naked eyes using light source
The technology of letter, have the advantages that transmission power it is high, without electromagnetic interference, without frequency spectrum certification, environmental protection, can effectively alleviate wireless
Electric frequency spectrum resource tends to exhausted problem, is increasingly valued by people in recent years.
The light source utilized in visible light communication is generally the white light LEDs for being generally used for illumination, based on existing visible ray
Modulation system, white light LEDs modulation bandwidth is relatively low, seriously constrains the raising of visible light communication speed.Therefore, will can be mixed with many
The color of kind of frequency controllable color visible signal carries out visible light communication as carrier wave optical signal.
The content of the invention
In view of this, a purpose of the embodiment of the present application is to provide a kind of controllable to mix the color of multi-frequency
Color visible signal as carrier signal visible light communication scheme.
To achieve the above object, according to the first aspect of the embodiment of the present application, there is provided a kind of visible light signal emission control
Method, methods described includes：
It is determined that at least performance parameter of a receiving terminal；
Display when performance parameter and display device according at least to an at least receiving terminal show an at least image
Feature, it is determined that the transmission power of at least one information to be transmitted；
Control to launch the optical signal for having modulated the corresponding information to be transmitted of the transmission power according to the transmission power.
According to the second aspect of the embodiment of the present application, there is provided a kind of visible light signal launch control unit, described device bag
Include：
One first determining module, the performance parameter for determining an at least receiving terminal；
One second determining module, shows for the performance parameter and display device according at least to an at least receiving terminal
Display feature during an at least image, it is determined that the transmission power of at least one information to be transmitted；
One control module, for controlling according to transmission power transmitting, to have modulated the transmission power corresponding to be transmitted
The optical signal of information.
According to the third aspect of the embodiment of the present application, there is provided a kind of visible light signal launches equipment, the equipment includes this
Apply for the visible light signal launch control unit of the second aspect of embodiment.
The method and device of the embodiment of the present application is according to the controllable colour carrier light letter of the color for sending multi-frequency mixing
Number the display feature of display device and the transmission requirement of information to be transmitted determine the transmission power of visible light signal, be to realize
Using the controllable colored optical signal of the color of multi-frequency mixing as the profit of the resource higher of the visible light communication of carrier signal
Provided the foundation with rate and relatively low light source energy consumption.
Brief description of the drawings
Fig. 1 is the flow chart of the visible light signal emission control method of the embodiment of the present application；
Fig. 2 (a) and Fig. 2 (b) are two kinds of structures of the visible light signal launch control unit of the embodiment of the present application of example
Figure；
Fig. 3 shows for a kind of application scenarios of example of the visible light signal emission control method and device of the embodiment of the present application
It is intended to；
Fig. 4 is the structure chart of the visible light signal launch control unit of another example of the embodiment of the present application；
Fig. 5 launches the structure chart of equipment for the visible light signal of the embodiment of the present application.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
It will be understood by those skilled in the art that the term such as " first ", " second " in the application is only used for difference difference setting
Standby, module or parameter etc., neither represent any particular technology implication, also do not indicate that the inevitable logical order between them.
Additionally, in each embodiment of the application, " display device " is any color having using multi-frequency mixing
The equipment that color controllable colored optical signal is presented at least function of an image, for example, display screen, the billboard that can light etc., and
The interface that such display device is used to present image includes multiple " pixel cells " that each pixel cell is by multiple (for example, three
It is individual) " pixel subelement " composition, each described pixel subelement is able to send a kind of light of frequency, namely is able to hair
Go out a kind of light of color (for example, red/green/blue).The optical signal can be pixel cell itself issued light, for example,
Each pixel cell sheet is as the light source as RGB LED；The optical signal is alternatively coming from for the pixel cell transmission
Display device as the light of the light source outside pixel cell, such as Thin Film Transistor-LCD, each of which pixel cell
The pixel list of three kinds of light of color of red, green, blue will can be respectively passed through by color film through at least three kinds of light of color of red, green, blue
The part of unit is referred to as the first colored pixels subelement, the second colored pixels subelement and the 3rd colored pixels subelement.No matter
It is above-mentioned which kind of situation, can be realized by the proportioning of the light of different frequency in the optical signal that is sent to each pixel cell different
The display of color, for example, RGB component proportioning is 0.313:0.64:0.045 pixel cell can send white light, etc..This Shen
The transmission of information to be transmitted that please be in each embodiment is that the controllable optical signal of the color sent with such display device is made
Information to be transmitted is modulated for carrier wave optical signal, be not limited solely to white light color proportioning, such visible light communication have compared with
Modulation bandwidth wide.The information to be transmitted is the information that will be sent by way of visible light communication, and the letter to be transmitted
All optical signals that breath is not necessarily required to send using display device complete transmission as carrier signal, for example, the information can be
The information related to shown image on display device (for example, the display device is used to showing in the scene of advertising image, institute
It can be the information related to the advertising image to state information to be transmitted, such as product is discussed in detail, company-information etc.).
The visible light communication emission control method of the embodiment of the present application can by independently of or belong to the device of display device and hold
OK, it is known or can obtain the display feature of display device.As shown in figure 1, the visible light signal transmitting of the embodiment of the present application
Control method includes：
S120. the performance parameter of an at least receiving terminal is determined.
For the effective transmission that visible light signal is realized using visible ray resource, the performance parameter of receiving terminal is to examine
The factor of worry.In the method for the embodiment of the present application, at least the performance parameter of a receiving terminal can be the method for the embodiment of the present application
Executive agent known to, or can be obtained by way of being communicated with such as receiving terminal.
When S140. the performance parameter and display device according at least to an at least receiving terminal show an at least image
Display feature, it is determined that the transmission power of at least one information to be transmitted.
By the optical signal that each pixel cell of display device is sent is the mixed of multi-frequency component according to a certain ratio
Close, although modulation bandwidth is very wide, but, modulates information to be transmitted to all pixels unit even all pixels subelement is sent out
The waste for being likely to result in resource is transmitted on the optical signal for going out.Therefore, in the method for each embodiment of the application, the transmitting
Power refers to that visible light signal that information to be transmitted is sent with display device is carrier signal transmission to specific receiving terminal needs
The minimum emissive power of satisfaction.The transmission that information to be transmitted is carried out according to the transmission power can be as aobvious in display device as possible
The energy consumption caused by the transmission of information to be transmitted can be as far as possible reduced while showing an at least image.And due to visible ray letter
Number transmission can not only be influenceed by receiving terminal hardware performance, can also be restricted by originator hardware performance, therefore in step
In S140, institute is determined according at least performance parameter of a receiving terminal, the display feature of display device and transmission environment etc.
State transmission power.The display feature refer to the related arbitrary characteristics of an at least image described in the display device show, for example,
The respective display coverage (it can be seen that physical extent of described image) of an at least image, each pixel list of display device
The color of unit, the brightness of each pixel cell of display device, display device show that each pixel cell is (each during an at least image
Color Channel) transmission power (this information can be used during an at least image according to display device shows (to color/
Brightness) control mode determination) etc..
S160. the light for having modulated the corresponding information to be transmitted of the transmission power according to transmission power transmitting is controlled to believe
Number.
To sum up, the method for the embodiment of the present application is according to the controllable colour carrier optical signal of the color for sending multi-frequency mixing
The display feature of display device and the transmission requirement of information to be transmitted determine the transmission power of visible light signal, for realize with
The controllable colored optical signal of color of multi-frequency mixing as the resource higher of the visible light communication of carrier signal utilization
Rate and relatively low light source energy consumption provide the foundation.
In a kind of possible implementation, step S140 may include：
At least one described in display feature determination when an at least image is S142. shown according at least to the display device
The effective propagation path of information to be transmitted.
The effective propagation path is the distance that receiving terminal can be successfully received visible light signal, and further, this has
Effect transmission range is that transmitting terminal can be according to sending visible light signal, and the need for receiving terminal can be according to user the need for user
It is successfully received the distance of visible light signal.In information to be transmitted and when at least an image is related of display on display device, should
Effective propagation path is not to be exceeded to receive end subscriber it can be seen that the maximum transmission distance of an at least image.Obviously, the maximum
Display feature when transmission range and display device show an at least image is relevant.And in order to reduce display device as far as possible
Energy consumption, receiving terminal be located at the maximum transmission distance in when, the effective propagation path be preferably corresponding receiving terminal with
The distance between display device.
S144. according at least to described in the effective propagation path and at least determination of the performance parameter of a receiving terminal
At least one information to be transmitted penetrates power.
The transmission power P can according to the following formula be determinedt：
Wherein, SNR is that receiving terminal receives the minimum signal to noise ratio that can be demodulated required by visible light signal；PNTo receive
Receiving terminal performance parameter in noise (bias light) power, namely the method for the embodiment of the present application at end；D is effective transmission
Distance；K is that lambertian radiation, incident angle, receiving terminal visual angle and the light collection degree of the light that the display device sends increase
The function of the parameters such as benefit, the Proceedings of that the function can for example according to J.Kahn and J.Barry at 2 months 1997
The determination described in Infrared Wireless Communication (Wireless infrared communications) delivered in IEEE.Accordingly
Ground, determines to calculate the above-mentioned performance parameter of the transmission power in the step s 120.
Other performance parameters of receiving terminal can be also obtained in the step s 120, and pass through to obtain other performance parameters indirect
Determine the transmission power.For example, passing through PN=qRPnAW determines the noise power P of receiving terminalN, determine further according to formula (1)
Calculate the transmission power.Wherein, q is electron charge, q=1.6 × 10-19；R is the electrooptical device of receiving terminal to background
The responsiveness of light (white light)；PnIt is the background luminous power of the electrooptical device unit area of receiving terminal；A is the photoelectricity of receiving terminal
The receiving area of switching device；W is the sample rate of receiving terminal.
Additionally, it is described display feature may include the display coverage of display device, the display device show described in extremely
Color and/or brightness during a few image, the respective display coverage of an at least image, display device display institute
State the corresponding pixel cell of each image during an at least image color and/or brightness at least one.What display device sent
The maximum transmission distance of visible light signal is that display device shows the particular attribute that should have during an at least image, can be passed through
Mature algorithm determines that the maximum transmission distance is alternatively the execution master of the method for the embodiment of the present application in the prior art
Information known to body, such as main body can have recorded the table of display feature and the corresponding relation of maximum transmission distance by searching
Mode obtain.The form of the table can be as follows, the merely illustrative purpose of wherein each table item index, according to different displays
Feature and other factors (resolution of eye being for example mentioned below) can have table as multiple types.
Table 1：Effective propagation path table
In a kind of possible implementation, can be according at least to the display coverage of the display device in step S142
And color during an at least image and/or brightness described in display, it is determined that effective transmission distance of at least one information to be transmitted
From.
In the information to be transmitted implementation related to the picture material shown by display device, can be extremely in step S142
Each image when few respective display coverage of an at least image according to and display device show an at least image
The color of corresponding pixel cell and/or brightness, it is determined that the effective propagation path of at least one information to be transmitted.
For different people, the spatial resolution of its eye may be different, therefore, carried out in order to more targeted
The transmission of information to be transmitted, can be according at least to the space of the display coverage of the display device, human eye point in step S142
Color and/or brightness when resolution and display device show an at least image, it is determined that at least one information to be transmitted
Effective propagation path.
Or can be according at least to the respective display coverage of an at least image, the space point of human eye in step S142
Resolution and display device show the color of the corresponding pixel cell of each image and/or brightness during an at least image, it is determined that
The effective propagation path of at least one information to be transmitted.
It will be understood by those skilled in the art that in the above method of the application specific embodiment, the sequence number of each step
Size is not meant to the priority of execution sequence, and the execution sequence of each step should be determined with its function and internal logic, without answering
Implementation process to the application specific embodiment constitutes any restriction.
Additionally, the embodiment of the present application additionally provides a kind of computer-readable medium, including following behaviour is carried out when executed
The computer-readable instruction of work：Perform the operation of each step of method in above-mentioned Fig. 1 illustrated embodiments.
The embodiment of the present application additionally provides a kind of visible light signal hair for performing above-mentioned visible light signal emission control method
Control device is penetrated, the device can be the device independently of display device, may belong to display device, or the device is institute in itself
State display device.When the device is display device in itself, in addition to the following each part that will be described, the device is also
Including other necessary components for carrying out visible light communication.Additionally, above-mentioned different executive roles according to the device
Need, in addition to each part described below, described device also includes to realize as needed and device outside arbitrary equipment
The communication module of communication.As shown in Fig. 2 (a), the visible light signal launch control unit 200 of the embodiment of the present application includes：
First determining module 220, the performance parameter for determining an at least receiving terminal.
For the effective transmission that visible light signal is realized using visible ray resource, the performance parameter of receiving terminal is to examine
The factor of worry.In the device of the embodiment of the present application, the performance parameter of receiving terminal can be known to the device 200 of the embodiment of the present application
, or can be obtained by way of being communicated with such as receiving terminal.
Second determining module 240, according at least to an at least receiving terminal performance parameter and display device show to
Display feature during a few image, it is determined that the transmission power of at least one information to be transmitted.
By the optical signal that each pixel cell of display device is sent is the mixed of multi-frequency component according to a certain ratio
Close, although modulation bandwidth is very wide, but, modulates information to be transmitted to all pixels unit even all pixels subelement is sent out
The waste for being likely to result in resource is transmitted on the optical signal for going out.Therefore, in the device of each embodiment of the application, the transmitting
Power refers to that visible light signal that information to be transmitted is sent with display device is carrier signal transmission to specific receiving terminal needs
The minimum emissive power of satisfaction.The transmission that information to be transmitted is carried out according to the transmission power can be as aobvious in display device as possible
The energy consumption caused by the transmission of information to be transmitted can be as far as possible reduced while showing an at least image.And due to visible ray letter
Number transmission can not only be influenceed by receiving terminal hardware performance, can also by originator hardware performance be restricted, therefore second determine
Module 240 determines institute according at least performance parameter of a receiving terminal, the display feature of display device and transmission environment etc.
State transmission power.The display feature refer to the related arbitrary characteristics of an at least image described in the display device show, for example,
The respective display coverage (it can be seen that physical extent of described image) of an at least image, each pixel list of display device
Each pixel cell (each face when the color of unit, the brightness of each pixel cell of display device, display device show an at least image
Chrominance channel) transmission power (this information can be used during an at least image according to display device shows (to color/bright
Degree) control mode determination) etc..
Control module 260, control has modulated the corresponding letter to be transmitted of the transmission power according to transmission power transmitting
The optical signal of breath.
To sum up, the device of the embodiment of the present application is according to the controllable colour carrier optical signal of the color for sending multi-frequency mixing
The display feature of display device and the transmission requirement of information to be transmitted determine the transmission power of visible light signal, for realize with
The controllable colored optical signal of color of multi-frequency mixing as the resource higher of the visible light communication of carrier signal utilization
Rate and relatively low light source energy consumption provide the foundation.
In a kind of possible implementation, such as shown in Fig. 2 (b), the second determining module 240 may include：
First determining unit 242, it is special for display when an at least image is shown according at least to the display device
Levy the effective propagation path of at least one information to be transmitted described in determining.
The effective propagation path is the distance that receiving terminal can be successfully received visible light signal, and further, this has
Effect transmission range is that transmitting terminal can be according to sending visible light signal, and the need for receiving terminal can be according to user the need for user
It is successfully received the distance of visible light signal.In information to be transmitted and when at least an image is related of display on display device, should
Effective propagation path is not to be exceeded to receive end subscriber it can be seen that the maximum transmission distance of an at least image.Obviously, the maximum
Display feature when transmission range and display device show an at least image is relevant.And in order to reduce display device as far as possible
Energy consumption, receiving terminal be located at the maximum transmission distance in when, the effective propagation path be preferably corresponding receiving terminal with
The distance between display device.
Second determining unit 244, for the property according at least to the effective propagation path and an at least receiving terminal
The transmission power of at least one information to be transmitted described in the determination of energy parameter.Second determination subelement 244 can determine according to formula (1)
The transmission power Pt。
Additionally, it is described display feature may include the display coverage of display device, the display device show described in extremely
Color and/or brightness during a few image, the respective display coverage of an at least image, display device display institute
State the corresponding pixel cell of each image during an at least image color and/or brightness at least one.What display device sent
The maximum transmission distance of visible light signal is the particular attribute of display device, can be true by mature algorithm in the prior art
Calmly, the maximum transmission distance is alternatively information, such as main body known to the executive agent for the method for the embodiment of the present application
Can be obtained by way of searching and have recorded display table of the feature with the corresponding relation of maximum transmission distance.The form of the table can
As shown in table 1, the merely illustrative purpose of wherein each table item index, according to different display features and other factors (such as under
The resolution of eye that face will be mentioned) there can be table as multiple types.In a kind of possible implementation, the second determining unit
244 can be according at least to the display coverage of the display device and the color and/or bright described in display during an at least image
Degree, it is determined that the effective propagation path of at least one information to be transmitted.
In the information to be transmitted implementation related to the picture material shown by display device, the second determining unit
244 can according at least to an at least image it is respective display coverage and display device show described in an at least image when
The color of the corresponding pixel cell of each image and/or brightness, it is determined that the effective propagation path of at least one information to be transmitted.
For different people, the spatial resolution of its eye may be different, therefore, carried out in order to more targeted
The transmission of information to be transmitted, the second determining unit 244 can be according at least to the display coverage of the display device, the sky of human eye
Between the color and/or brightness of resolution ratio and display device when showing an at least image, it is determined that described at least one is to be transmitted
The effective propagation path of information.
Or second determining unit 244 can be according at least to the respective display coverage of at least image, human eye
Spatial resolution and display device show during an at least image color of the corresponding pixel cell of each image and/or bright
Degree, it is determined that the effective propagation path of at least one information to be transmitted.
The method and device of each embodiment of the application is further illustrated below by instantiation.With scene shown in Fig. 3
As a example by.Display device 320 is used to show advertisement, including multiple RGBLED pixel cells.Display image 322 on display device 320
With image 324, and image 322 and the respective display area coverage S of image 324, color C and brightness B are as shown in Figure 3.In view of
Display device 320 is applied to display advertisement this scene, the product that each image can be shown more rich information, for example
Performance, price, demonstration video etc. are broadcast to user in the way of visible light communication, namely the optical signal sent with display device
It is carrier signal, is connect with visible light signal to (it can be seen that in the range of each image) in the display coverage of each image
Receipts ability receiving device sends the information related to display content on each image, and according to the method for each embodiment of the application, will
The optical signal that the information is sent using the partial pixel unit of display device 320 is used as carrier signal.Respectively implemented according to the application
The method and device of example, is determined by searching corresponding effective propagation path table：Do not surpass to the distance between display device 320
The receiving device 340 for crossing D1 sends the information related to image 324；To with the distance between display device 320 no more than D2's
Receiving device 360 sends the information related to image 322.Further according to the method and device of each embodiment of the application, according to respective
Effective transmission range (in the scene of Fig. 3 be respectively D1 and D2) transmission power of each information to be transmitted is determined according to formula (1),
And according to the transmission of identified transmission power control information to be transmitted.
A kind of structural representation of visible light signal launch control unit 400 that Fig. 4 is provided for the embodiment of the present application, this Shen
Please specific embodiment implementing for visible light signal launch control unit 400 is not limited.As shown in figure 4, this is visible
Optical signal launch control device 400 can include：
Processor (processor) 410, communication interface (Communications Interface) 420, memory
(memory) 430 and communication bus 440.Wherein：
Processor 410, communication interface 420 and memory 430 complete mutual communication by communication bus 440.
Communication interface 420, communicates for the network element with such as client etc..
Processor 410, for configuration processor 432, can specifically realize visible ray in the device embodiment of above-mentioned Fig. 2 (a)
The correlation function of signal launch control unit.
Specifically, program 432 can include program code, and described program code includes computer-managed instruction.
Processor 410 is probably a central processor CPU, or specific integrated circuit ASIC (Application
Specific Integrated Circuit), or it is arranged to implement one or more integrated electricity of the embodiment of the present application
Road.Program 432 specifically can be used for so that the visible light signal launch control unit 400 performs following steps：
It is determined that at least performance parameter of a receiving terminal；
Display when performance parameter and display device according at least to an at least receiving terminal show an at least image
Feature, it is determined that the transmission power of at least one information to be transmitted；
Control to launch the optical signal for having modulated the corresponding information to be transmitted of the transmission power according to the transmission power.
In program 432 each step implement it is corresponding in the corresponding steps and unit that may refer in above-described embodiment
Description, will not be described here.It is apparent to those skilled in the art that, it is for convenience and simplicity of description, above-mentioned to retouch
The equipment and the specific work process of module stated, may be referred to the corresponding process description in preceding method embodiment, herein no longer
Repeat.
As shown in figure 5, the embodiment of the present application additionally provides a kind of visible light signal emitter 500, including Fig. 2 (a) is extremely
Visible light signal launch control unit 200 in Fig. 2 (b) described by Subgraph.Additionally, also including realizing transmitting visible light signal
Necessary transmitter module 520, amplification module etc..
It is apparent to those skilled in the art that, for convenience and simplicity of description, the equipment of foregoing description
With the specific work process of module, the correspondence description in aforementioned means embodiment is may be referred to, will not be repeated here.
Although subject matter described herein is held in the execution on the computer systems of binding operation system and application program
There is provided in capable general context, but it will be appreciated by the appropriately skilled person that may also be combined with other kinds of program module
To perform other realizations.In general, program module include perform particular task or realize particular abstract data type routine,
Program, component, data structure and other kinds of structure.It will be understood by those skilled in the art that subject matter described herein can
To be put into practice using other computer system configurations, including portable equipment, multicomputer system, based on microprocessor or can compile
Journey consumption electronic product, minicom, mainframe computer etc., it is possible to use task by communication network by being connected wherein
In the DCE that remote processing devices are performed.In a distributed computing environment, program module can be located at local and remote
Journey memory storage device both in.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Unit and method and step, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel
Described function, but this realization can be realized it is not considered that exceeding using distinct methods to each specific application
Scope of the present application.
If the function is to realize in the form of SFU software functional unit and as independent production marketing or when using, can be with
Storage is in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially in other words
The part contributed to original technology or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used to so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of the application each embodiment methods described.
And foregoing computer read/write memory medium include with store as computer-readable instruction, data structure, program module or its
Any mode or technology of the information such as his data are come the physics volatibility realized and non-volatile, removable and can not be situated between because of east
Matter.Computer read/write memory medium is specifically included, but is not limited to, USB flash disk, mobile hard disk, read-only storage (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), Erasable Programmable Read Only Memory EPROM
(EPROM), EEPROM (EEPROM), flash memory or other solid-state memory technologies, CD-ROM, numeral
Versatile disc (DVD), HD-DVD, blue light (Blue-Ray) or other light storage devices, tape, disk storage or other magnetic are deposited
Storage equipment can be used for any other medium that store information needed and can be accessed by computer.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (18)
1. a kind of visible light signal emission control method, it is characterised in that methods described includes：
It is determined that at least performance parameter of a receiving terminal；
Display feature when performance parameter and display device according at least to an at least receiving terminal show an at least image,
It is determined that the transmission power of at least one information to be transmitted；Wherein, the display feature includes：The display covering model of the display device
Enclose, the color when display device shows an at least image, the display device show described in an at least image when
Each image when brightness, the respective display coverage of an at least image, the display device show an at least image
The color of corresponding pixel cell, the display device show the bright of each image corresponding pixel cell during an at least image
At least one in the spatial resolution of degree and human eye；
Control to launch the optical signal for having modulated the corresponding information to be transmitted of the transmission power according to the transmission power.
2. method according to claim 1, it is characterised in that the transmission power bag of the information to be transmitted of the determination at least
Include：
According at least to the effective propagation path of at least one information to be transmitted described in the display feature determination；
Performance parameter according to the effective propagation path and an at least receiving terminal determines the transmission power.
3. method according to claim 2, it is characterised in that the effective propagation path be an at least receiving terminal with
The distance between described display device.
4. method according to claim 2, it is characterised in that
It is described according at least to it is described display feature determine described at least one information to be transmitted effective propagation path in：
When display coverage and the display device according at least to the display device show an at least image
Color and/or brightness, it is determined that the effective propagation path of at least one information to be transmitted.
5. method according to claim 2, it is characterised in that
It is described according at least to it is described display feature determine described at least one information to be transmitted effective propagation path in：
An at least figure is shown according at least to the respective display coverage of an at least image and the display device
The color of the corresponding pixel cell of each image and/or brightness during picture, it is determined that effective transmission distance of at least one information to be transmitted
From.
6. method according to claim 2, it is characterised in that
It is described according at least to it is described display feature determine described at least one information to be transmitted effective propagation path in：
Display coverage, the spatial resolution of human eye and the display device display institute according at least to the display device
Color and/or brightness when stating an at least image, it is determined that the effective propagation path of at least one information to be transmitted.
7. method according to claim 2, it is characterised in that
It is described according at least to it is described display feature determine described at least one information to be transmitted effective propagation path in：
Shown according at least to the respective display coverage of an at least image, the spatial resolution of human eye and display device
The color of the corresponding pixel cell of each image and/or brightness during an at least image, it is determined that at least one information to be transmitted
Effective propagation path.
8. method according to any one of claim 1 to 7, it is characterised in that the performance ginseng of an at least receiving terminal
Number also includes：
An at least receiving terminal receives the minimum signal to noise ratio and an at least receiving terminal required by demodulation visible light signal
Noise power.
9. the method according to claim 5 or 7, it is characterised in that the pixel cell at least includes the first colored pixels
Subelement, the second colored pixels subelement and the 3rd colored pixels subelement.
10. method according to claim 9, it is characterised in that the pixel cell is RGB LED.
11. a kind of visible light signal launch control units, it is characterised in that described device includes：
One first determining module, the performance parameter for determining an at least receiving terminal；
One second determining module, shows at least for the performance parameter and display device according at least to an at least receiving terminal
Display feature during one image, it is determined that the transmission power of at least one information to be transmitted；Wherein, the display feature includes：It is described
Color, the display device when display coverage of display device, the display device show an at least image show
Show brightness, the respective display coverage of an at least image, the display device display institute during an at least image
Respectively scheme when the color of the corresponding pixel cell of each image, the display device show an at least image when stating an at least image
As at least one in the brightness of corresponding pixel cell and the spatial resolution of human eye；
One control module, for controlling to have modulated the corresponding information to be transmitted of the transmission power according to transmission power transmitting
Optical signal.
12. devices according to claim 11, it is characterised in that the second determining module includes：
One first determining unit, for the effective transmission according at least at least one information to be transmitted described in the display feature determination
Distance；
One second determining unit, for being determined according to the performance parameter of the effective propagation path and an at least receiving terminal
The transmission power.
13. devices according to claim 12, it is characterised in that
Second determining unit is according at least to the display coverage of the display device and display device display institute
Color and/or brightness when stating an at least image, it is determined that the effective propagation path of at least one information to be transmitted.
14. devices according to claim 12, it is characterised in that
Second determining unit is according at least to respective display coverage and the display device of an at least image
The color of the corresponding pixel cell of each image and/or brightness during an at least image described in display, it is determined that described at least one is to be transmitted
The effective propagation path of information.
15. devices according to claim 12, it is characterised in that
Second determining unit is according at least to the display coverage of the display device, the spatial resolution of human eye and institute
Color when display device shows an at least image and/or brightness are stated, it is determined that at least one information to be transmitted is effective
Transmission range.
16. devices according to claim 12, it is characterised in that
Second determining unit is according at least to the respective display coverage of an at least image, the spatial resolution of human eye
And display device shows the color of the corresponding pixel cell of each image and/or brightness during an at least image, it is determined that described
The effective propagation path of at least one information to be transmitted.
A kind of 17. visible light signal transmitting equipment, not, the equipment is included according to any in claim 11 to 16 its feature
Visible light signal launch control unit described in.
18. equipment according to claim 17, it is characterised in that the equipment also includes：
One transmitter module, for the control in the visible light signal launch control unit, launches according to the transmission power and adjusts
The optical signal of the corresponding information to be transmitted of the transmission power is made.
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