CN104320189B

CN104320189B - Visible light signal emission control method, launch control unit and transmitting equipment

Info

Publication number: CN104320189B
Application number: CN201410558906.5A
Authority: CN
Inventors: 徐然
Original assignee: Beijing Zhigu Ruituo Technology Services Co Ltd
Current assignee: Beijing Zhigu Ruituo Technology Services Co Ltd
Priority date: 2014-10-20
Filing date: 2014-10-20
Publication date: 2017-03-08
Anticipated expiration: 2034-10-20
Also published as: CN104320189A

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 first transmission power of at least one information to be transmitted；Show display feature during an at least image according at least to first transmission power and display device, determine the partial pixel unit of the display device of to be transmitted information association corresponding with first transmission power is sent；On the optical signal that at least one modulates information to be transmitted is sent by control to the partial pixel unit of the association of the determination.The method and device of each embodiment of the application passes through the display device of the color visible signal controlled with the color that can send multi-frequency mixing as light source, the color visible signal for using color controlled is used as carrier wave optical signal modulation information to be transmitted, wider modulation bandwidth can be obtained, simultaneously, the utilization rate of resource can be improved, saves the energy consumption of display device.

Description

Visible light signal emission control method, launch control unit and transmitting equipment

Technical field

The 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 Communications, VLC) is the light conduct using visible light wave range The carrier of Information Communication, sends the imperceptible high speed light and shade blinking light of naked eyes come the wireless optical of transmission information using light source The technology of communication, have the advantages that transmission power height, nothing electromagnetic interference, nothing frequency spectrum certification, environmental protection, effectively can alleviate no Line electricity frequency spectrum resource tends to exhausted problem, is increasingly subject to people's attention in recent years.

The light source utilized in visible light communication is generally generally used for the white light LEDs for illuminating, based on existing visible ray Modulation system, white light LEDs modulation bandwidth are relatively low, seriously constrain the raising of visible light communication speed.Therefore, expect modulation bandwidth The high visible light communication scheme of higher and resource utilization.

Content of the invention

In view of this, to be to provide a kind of modulation bandwidth higher and being capable of effectively utilizes for a purpose of the embodiment of the present application The visible light communication scheme of resource.

For achieving the above object, according to the embodiment of the present application in a first aspect, providing a kind of visible light signal emission control Method, methods described include：

Determine the first transmission power of at least one information to be transmitted；

Show display feature during an at least image according at least to first transmission power and display device, determine with Send the partial pixel unit of the display device of the corresponding information association to be transmitted of first transmission power；

The light that at least one modulates information to be transmitted is sent by control to the partial pixel unit of the association of the determination On signal.

According to the second aspect of the embodiment of the present application, a kind of visible light signal launch control unit, described device bag is provided Include：

One first determining module, for determining the first transmission power of at least one information to be transmitted；

One second determining module, for showing an at least image according at least to first transmission power and display device When display feature, determine the part picture of the display device of to be transmitted information association corresponding with transmission first transmission power Plain unit；

One control module, for controlling the part picture of at least one modulates information to be transmitted to the association of the determination On the optical signal that plain unit sends.

According to the third aspect of the embodiment of the present application, a kind of visible light signal transmitting equipment is provided, the equipment includes this The visible light signal launch control unit of the second aspect of application embodiment.

The method and device of the embodiment of the present application passes through visible can send the controlled colour of the color of multi-frequency mixing The display device of optical signal is light source, and the color visible signal for using color controlled is used as carrier wave optical signal modulation letter to be transmitted Breath, can obtain wider modulation bandwidth, meanwhile, according to the display feature of display device and the transmission requirement of information to be transmitted The partially visible optical signal for selecting display device to send is used as carrier wave optical signal, it is possible to increase the utilization rate of resource, saves and shows The energy consumption of equipment.

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) to Fig. 2 (h) is the structure of the visible light signal launch control unit of the embodiment of the present application of multiple examples 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 is the structure chart of the visible light signal transmitting equipment of the embodiment of the present application.

Specific embodiment

With reference to the accompanying drawings and examples, the specific embodiment to the present invention is described in further detail.Hereinafter implement Example is for illustrating the present invention, but is not limited to the scope of 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 distinguishing difference and sets 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 arbitrarily have the color mixed using multi-frequency Color controlled colored optical signal assumes the equipment of at least function of an image, for example, display screen, the billboard that can be lighted etc., and Such display device is used for assuming the interface of image to be included multiple " pixel cells ", and each pixel cell is by multiple (for example, three Individual) " pixel subelement " constituted, and each pixel subelement is able to send a kind of light of frequency (for example, red/green/indigo plant Light).The optical signal can be pixel cell itself issued light, and for example, each pixel cell sheet is as RGB LED Light source；The optical signal is alternatively the light of the light source outside pixel cell that the pixel cell is passed through, and such as film is brilliant The such display device of body pipe liquid crystal display, each of which pixel cell can be by color film through at least three kinds of colors of red, green, blue Light, by respectively through the pixel cell of the light of three kinds of colors of red, green, blue part be referred to as the first colored pixels subelement, the Second colors pixel subelement and the 3rd colored pixels subelement.Whether which kind of situation above-mentioned, all can be by each pixel In the optical signal that unit sends, the proportioning of the light of different frequency realizes the display of different colours, and for example, RGB component proportioning is 0.313:0.64:0.045 pixel cell can send white light.Sent with such display device in each embodiment of the application The controlled optical signal of color modulates information to be transmitted as carrier wave optical signal, is not limited solely to the color proportioning of white light, so as to Wider modulation bandwidth is obtained, while according to transmission and the reception requirement of information to be transmitted, further using the portion of display device Point corresponding optical signal of pixel cell is used as carrier signal, it is possible to increase the utilization rate of resource simultaneously saves the energy consumption of display device. The information to be transmitted be by the information sent by way of visible light communication, and the information to be transmitted be not necessarily required to All optical signals that display device sends complete transmission as carrier signal.For example, the information can be and institute on display device The related information of display image (for example, is used for showing in the scene of advertising image in display device, the information to be transmitted can be The information related to the advertising image, such as product are 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, its display feature known or that display device can be obtained.As shown in figure 1, the visible light signal transmitting of the embodiment of the present application Control method includes：

S120. determine the first transmission power of at least one information to be transmitted.

In the method for each embodiment of the application, the first transmission power be by information to be transmitted with display device send visible Optical signal needs, for carrier signal transmission to specific receiving terminal, the minimum emissive power for meeting.First transmission power can be Set in advance, can have been obtained by the main body of the method for executing the present embodiment, alternatively execute the method for the present embodiment Main body itself determines.

S140. show display feature during an at least image according at least to first transmission power and display device, Determine the partial pixel unit of the display device of to be transmitted information association corresponding with first transmission power is sent, that is, Determine optical signal that the partial pixel unit sends as the carrier wave optical signal of corresponding data to be transmitted.

Due to the optical signal sent by each pixel cell of display device be with multi-frequency component according to a certain ratio, Money is likely to result on the optical signal sent by modulates information to be transmitted to all pixels unit or even all pixels subelement The waste in source, therefore, in the method for the embodiment of the present application, on the premise of the first transmission power of information to be transmitted is met, Specifically show that feature determines the portion of to be transmitted information association corresponding with first transmission power is sent according to display device Divide pixel cell.Described show that feature refers to and the related arbitrary characteristics of an at least image described in the display device shows, for example, An at least image is respective to show coverage (it can be seen that physical extent of described 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 adopted during an at least image according to display device shows (to color/bright Degree) control mode determination) etc..

S160. control and at least one modulates information to be transmitted is sent to the partial pixel unit of the association of the determination Optical signal on.

The partial pixel of to be transmitted information association corresponding with first transmission power is sent is determined in step S140 After unit, in step S160, the transmission information modulation that each is to be sent is controlled to be sent to corresponding partial pixel unit On optical signal, as needed, the mode of modulation can adopt the arbitrary modulation system being suitable in visible light communication, for example：On ＆ off switch Control (On-Off Keying, OOK), variable pulse position modulation (Variable Pulse Position Modulation, VPPM), light spatial modulation (Optical Spatial Modulation, OSM), OFDM (Orthogonal Frequency Division Multiplexing, OFDM) etc..

To sum up, the method for the embodiment of the present application passes through the color visible controlled can send the color of multi-frequency mixing The display device of signal is light source, and the color visible signal for using color controlled is used as carrier wave optical signal modulation letter to be transmitted Breath, can obtain wider modulation bandwidth, meanwhile, according to the display feature of display device and the transmission requirement of information to be transmitted The partially visible optical signal for selecting display device to send is used as carrier wave optical signal, it is possible to increase the utilization rate of resource, saves and shows The energy consumption of equipment.

The transmission performance of visible light signal receptivity greatly depending on receiving terminal.In a kind of possible realization In mode, in step S140 according at least to first transmission power, the display feature and receiving terminal optical-electrical converter The responsiveness of part, determines the part picture on the display device of information association to be transmitted corresponding with first transmission power is sent Plain unit.The responsiveness of the electrooptical device of receiving terminal refers to that the photoelectricity for receiving the visible light signal for having modulated information to be transmitted turns The photoelectric conversion capacity of parallel operation part (for example, photodiode), different electrooptical device is to the optical signal of different frequency Responsiveness is different, in this implementation, can be on the basis of the first transmission power be met, according to the display feature and institute State responsiveness to determine the part picture on the display device of information association to be transmitted corresponding with first transmission power is sent Plain unit.Specifically, each pixel cell when the display feature may include that the display device shows an at least image Color, and step S140 may include：

S142. an at least frequency is determined according at least to the responsiveness.

Can send out when showing an at least image from the display device according to responsiveness order from high to low is made An at least frequency is determined in the frequency that the optical signal for going out has.For example, it is assumed that the optical signals ruddiness, green that display device sends Light and blue light are formed, and the electrooptical device of receiving terminal is followed successively by R to the frequency response degree of red, green, blue_R、R_G、 R_B, and have R_R＞ R_B＞ R_G, it may be determined that one frequency of responsiveness highest, namely the frequency of ruddiness.Can be determined according to responsiveness more than A kind of frequency, for example, according to a highest responsiveness scope, determines two kinds of frequencies, the i.e. frequency of the frequency of ruddiness and blue light.

S144. according at least to first transmission power, the color of each pixel cell and an at least frequency, Determine at least one first colored pixels subelement of to be transmitted information association corresponding with first transmission power is sent.

Specifically, institute should be equal or slightly larger than in the transmission power of the optical signal for transmitting information to be transmitted determined by satisfaction At least one first colored pixels subelement described in determining on the premise of stating the first transmission power.For example, shown according to display device During an at least image, the color of each pixel cell can determine the transmission power of each Color Channel of each pixel cell, and then really Determine the total transmission power of each Color Channel of display device：The total transmission power of red channel is P_R, the total transmitting work(of green channel Rate is P_G, the total transmission power of blue channel be P_B, the first transmission power is designated as P_t, the first frequency of determination in step S144 Rate is the frequency of ruddiness, and second frequency is the frequency of blue light, and the 3rd frequency is the frequency of green glow, if P_R≥P_t, then can be from red picture A part is selected in sub-prime unit, so that the second transmission power of corresponding optical signal is equal or slightly larger than P_t；If P_R＜ P_t, then All red pixel subelements are may be selected, and a part is selected from blue pixel subelement, so that the of corresponding optical signal Two transmission powers are equal or slightly larger than P_t；If desired, select from other colored pixels subelements further, until corresponding Second transmission power of optical signal is equal or slightly larger than P_t.

The brightness of visible light signal can affect the transmission performance of the information that modulates thereon, for example, the bit error rate, etc..In order to The transmission performance of to be transmitted information of each embodiment of the application by transmitting is provided, in alternatively possible implementation, described Show feature when the display device shows an at least image in addition to the color of each pixel cell, may also include described aobvious The brightness of each pixel cell when showing that equipment shows an at least image.In this implementation, step S140 also includes：

S146. according at least to the brightness of first transmission power and each pixel cell, determine described with transmission At least one first colored pixels determined in the step of first transmission power corresponding information association to be transmitted S144 is single At least part of in unit.

The ratio that the brightness of pixel cell and pixel cell fluorescent lifetime account for its light period is relevant, and ratio is bigger, brightness Higher.In this implementation preferably, at least part of of at least one first colored pixels subelement includes fluorescent lifetime Account for light period ratio be close to 50% pixel cell pixel subelement.

For example, as combined described by step S144, if P_R≥P_t, then a part can be selected from red pixel subelement, So that the 3rd transmission power of corresponding optical signal is equal or slightly larger than P_t, during selection, preferably fluorescent lifetime accounts for light period Ratio is close to the red pixel subelement of 50% pixel cell, so that the 3rd transmission power of corresponding optical signal is equal to or omits More than P_t.

In another possible implementation, the display feature includes that the display device shows an at least figure The brightness of each pixel cell during picture.In this implementation, according at least to first transmission power and institute in step S140 The brightness of each pixel cell is stated, is determined on the display device of information association to be transmitted corresponding with first transmission power is sent Partial pixel unit.Specifically, step S140 may include：

S145. brightness according at least to each pixel cell and first transmission power determine and send described the An at least pixel cell of the corresponding information association to be transmitted of one transmission power.Preferably, an at least pixel cell includes Fluorescent lifetime accounts for the pixel cell that the ratio of light period is close to 50%.

Specifically, institute should be equal or slightly larger than in the transmission power of the optical signal for transmitting information to be transmitted determined by satisfaction On the premise of stating the first transmission power, prioritizing selection fluorescent lifetime accounts for the pixel cell that the ratio of light period is closest to 50%. For example, all pixels unit for fluorescent lifetime being accounted for the ratio of light period closest to 50% is referred to as the first pixel cell set, Transmission power according to each pixel cell of display device determines total transmission power P1 of the first pixel cell set, if P1 >= P_t, then a part can be selected from the first pixel cell set, so that the 4th transmission power of corresponding optical signal is equal to or omits More than P_t；If P1 is ＜ P_t, then all pixels unit in the first pixel cell set is may be selected, and luminous week is accounted in fluorescent lifetime The ratio of phase time is close to selected section in 50% pixel cell, so that the 4th transmission power of corresponding optical signal is equal to or slightly More than P_t.

In another possible implementation, described display feature except include the display device show described at least During one image outside the brightness of each pixel cell, each pixel cell when also including that the display device shows an at least image Color.In such implementation, step S140 also includes：

S147. the responsiveness according at least to the electrooptical device of receiving terminal determines an at least first frequency.

Can send out when showing an at least image from the display device according to responsiveness order from high to low is made An at least frequency described in determining in the frequency of the optical signal for going out.For example, it is assumed that the optical signals ruddiness, green that display device sends Light and blue light are formed, and the electrooptical device of receiving terminal is followed successively by R to the responsiveness of red, green, blue_R、R_G、R_B, and There is R_R＞ R_B＞ R_G, it may be determined that responsiveness highest frequency is first frequency, namely the frequency of ruddiness.Can be determined according to responsiveness More than one frequency, for example, according to a highest responsiveness scope, determines two kinds of frequencies, the i.e. frequency of the frequency of ruddiness and blue light Rate.

S149. according at least to the color of an at least frequency, first transmission power and each pixel cell, Described at least one determined by the step of determining information association to be transmitted corresponding with first transmission power is sent S145 At least part of in pixel cell.

Specifically, institute should be equal or slightly larger than in the transmission power of the optical signal for transmitting information to be transmitted determined by satisfaction On the premise of stating the first transmission power, according to receiving terminal electrooptical device responsiveness height determine described in an at least picture Plain unit at least part of.For example, as combined described by step S145, if P1 >=P_t, then can be from first set pixel cell According to receiving terminal electrooptical device responsiveness height select first set pixel cell at least one first face Color pixel subelement, so that the 5th transmission power of corresponding optical signal is equal or slightly larger than P_t；If P1 is ＜ P_t, then may be selected the All pixels unit in one pixel cell set, and the ratio time for accounting for light period in fluorescent lifetime is close to 50% pixel list Selected section in unit, or according to receiving terminal photoelectric conversion device responsiveness height, select remaining pixel cell to be wrapped At least pixel subelement for including, so that the 5th transmission power of corresponding optical signal is equal or slightly larger than P_t.

Additionally, in the method for the embodiment of the present application, first transmission power can be set in advance, Neng Gouyou Acquired in the main body of the method for executing the present embodiment.Correspondingly, step S120 may include：

S122. the first transmission power of at least one information to be transmitted described in receiving.

First transmission power is alternatively what the main body itself of the method for executing the present embodiment determined.Correspondingly, step S120 may include：

S124. aobvious when performance parameter according at least to receiving terminal and the display device show an at least image Show feature, the first transmission power of at least one information to be transmitted described in determination.

The transmission of visible light signal can be affected by originator and receiving end hardware performance and transmission environment.In order to will be to be transmitted Information is sent to specific receiving terminal by the form of visible light signal, and the method for the embodiment of the present application is according to the aobvious of display device Show that feature and transmission environment etc. determine the first transmission power.Specifically, step S124 may include：

Described in display feature determination when S1242. showing an at least image according at least to the display device at least The effective propagation path of one information to be transmitted.

The effective propagation path can be successfully received the distance of visible light signal for receiving terminal, and further, this has Effect transmission range can need transmission visible light signal according to user for transmitting terminal, and receiving terminal can be according to the needs of 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 relevant.And set to reduce display as far as possible Standby energy consumption, when receiving terminal is located in the maximum transmission distance, the effective propagation path is preferably corresponding receiving terminal The distance between with display device.

S1244. according at least to the effective propagation path and the performance parameter of the receiving terminal determination described at least First transmission power of one information to be transmitted.

First transmission power P can be determined according to the following formula_t：

Wherein, SNR receives, for receiving terminal, the minimum signal to noise ratio that can be demodulated required by visible light signal；P_NFor receiving terminal Noise (bias light) power, namely the method for the embodiment of the present application in receiving terminal performance parameter；D is effective transmission distance From；K is lambertian radiation, incident angle, receiving terminal visual angle and the light collection degree gain of the light that the display device sends Deng the function of parameter, the function can be for example according to J.Kahn and J.Barry in the Proceedings of the of 2 months 1997 The determination described in Infrared Wireless Communication (Wireless infrared communications) that delivers in IEEE.Accordingly Ground, step S120 also include：

S126. determine the performance parameter of an at least receiving terminal.For example, true by way of obtaining from corresponding receiving terminal Fixed.The performance parameter of receiving terminal at least includes that the responsiveness of the electrooptical device of receiving terminal (includes the response to various frequencies Degree).

It should be noted that can also obtain other performance parameters of receiving terminal in step S126, and by being obtained which He determines the first transmission power indirectly at performance parameter.For example, by P_N=qRP_nA W is determining noise power P of receiving terminal_N, then Determined according to formula (1) and calculate the first transmission power.Wherein, q is electron charge, q=1.6 × 10^-19；R is the photoelectricity of receiving terminal Responsiveness of the switching device to bias light (white light)；P_nBackground luminous power for the electrooptical device unit area of receiving terminal；A Receiving area for the electrooptical device of receiving terminal；W is the sample rate of receiving terminal.

Additionally, described display feature may include the display coverage of display device, the display device shows described in extremely Color and/or brightness during a few image, the respective display coverage of an at least image, the display device show institute State the color of the corresponding pixel cell of each image during an at least image and/or at least one in brightness.Display device sends 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 pass through In prior art, mature algorithm determines, the maximum transmission distance is alternatively the execution master of the method for the embodiment of the present application Information known to body, the such as main body can have recorded, by searching, the table for showing feature and the corresponding relation of maximum transmission distance Mode obtain.The form of the table can be as follows, and 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 be with tables as multiple types.

Table 1：Effective propagation path table

In a kind of possible implementation, in step S1242, model can be covered according at least to the display of the display device Color during an at least image and/or brightness described in enclosing and showing, effective transmission of at least one information to be transmitted described in determination Distance.

In the information to be transmitted implementation related to the picture material shown by display device, can in step S1242 Show that coverage and display device are respectively schemed when showing an at least image according at least to an at least image is respective As color and/or the brightness of corresponding pixel cell, the effective propagation path of at least one information to be transmitted described in determination.

For different people, the spatial resolution of its eye may be different, therefore, carries out in order to more targeted The transmission of information to be transmitted, can divide according at least to the space of the display coverage of the display device, human eye in step S1242 Color and/or brightness when resolution and display device show an at least image, determine described at least one information to be transmitted Effective propagation path.

Or can be according at least to the respective space for showing coverage, human eye of an at least image in step S1242 Resolution ratio and display device show the color of the corresponding pixel cell of each image and/or brightness during an at least image, really The effective propagation path of fixed at least one information to be transmitted.

To sum up, the method for the embodiment of the present application can obtain wider modulation bandwidth, improve the utilization rate of resource, save aobvious Show the energy consumption of equipment, and visible light signal transmission performance is higher.

It will be understood by those skilled in the art that in the said 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, and should not 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 carrying out following behaviour when executed The computer-readable instruction of work：Execute the operation of each step of method in above-mentioned Fig. 1 illustrated embodiment.

The embodiment of the present application additionally provides a kind of visible light signal for executing above-mentioned visible light signal emission control method and sends out Control device is penetrated, the device can be the device independently of display device, display device is may belong to, or the device itself is institute State display device.When the device itself is display device, in addition to the following each part that will be described, the device is also Including other necessary component for carrying out visible light communication.Additionally, the above-mentioned difference executive roles according to the device Need, in addition to each part described below, described device also includes to realize as needed and the outside arbitrary equipment of device 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, for determining the first transmission power of at least one information to be transmitted.

In the device of each embodiment of the application, the first transmission power be by information to be transmitted with display device send visible Optical signal needs, for carrier signal transmission to specific receiving terminal, the minimum emissive power for meeting.First transmission power can be Set in advance, can have been obtained by the device 200 of the embodiment of the present application, alternatively device 200 itself has determined.

Second determining module 240, for showing an at least figure according at least to first transmission power and display device Display feature during picture, determines the part of the display device of to be transmitted information association corresponding with first transmission power is sent Pixel cell, that is, determine that optical signal that the partial pixel unit sends is believed as the carrier light of corresponding data to be transmitted Number.

Control module 260, for controlling the part of at least one modulates information to be transmitted to the association of the determination On the optical signal that pixel cell sends.

Second determining module 240 determines the part of to be transmitted information association corresponding with first transmission power is sent After pixel cell, control module 260 controls the transmission information modulation that each is to be sent to be sent out to corresponding partial pixel unit On the optical signal for going out, as needed, the mode of modulation can adopt the arbitrary modulation system being suitable in visible light communication, for example：Open Close keying, variable pulse position modulation, light spatial modulation, OFDM etc..

To sum up, the device of the embodiment of the present application passes through the color visible controlled can send the color of multi-frequency mixing The display device of signal is light source, and the color visible signal for using color controlled is used as carrier wave optical signal modulation letter to be transmitted Breath, can obtain wider modulation bandwidth, meanwhile, according to the display feature of display device and the transmission requirement of information to be transmitted The partially visible optical signal for selecting display device to send is used as carrier wave optical signal, it is possible to increase the utilization rate of resource, saves and shows The energy consumption of equipment.

The transmission performance of visible light signal receptivity greatly depending on receiving terminal.In a kind of possible realization In mode, the second determining module 240 is according at least to the photoelectricity of first transmission power, the display feature and receiving terminal The responsiveness of switching device, determines on the display device of information association to be transmitted corresponding with first transmission power is sent Partial pixel unit.The responsiveness of the electrooptical device of receiving terminal refers to receive the visible light signal of having modulated information to be transmitted The photoelectric conversion capacity of electrooptical device (for example, photodiode), the light of different electrooptical device to different frequency The responsiveness of signal is different, in this implementation, can be on the basis of the first transmission power be met, according to the display feature And the responsiveness is determining on the display device of information association to be transmitted corresponding with first transmission power is sent Partial pixel unit.Specifically, each pixel when the display feature may include that the display device shows an at least image The color of unit, and as shown in Fig. 2 (b), the second determining module 240 may include：

First determining unit 242, for determining an at least frequency according at least to the responsiveness.

First determining unit 242 can show institute according to responsiveness order from high to low is made from the display device State and in the frequency that the optical signal sent during an at least image has, determine an at least frequency.For example, it is assumed that display device sends Optical signals ruddiness, green glow and blue light form, the electrooptical device of receiving terminal is rung to the frequency of red, green, blue Response is followed successively by R_R、R_G、R_B, and have R_R＞ R_B＞ R_G, it may be determined that one frequency of responsiveness highest, namely the frequency of ruddiness.Can root More than one frequency is determined according to responsiveness, for example, according to a highest responsiveness scope, determine two kinds of frequencies, the i.e. frequency of ruddiness And the frequency of blue light.

Second determining unit 244, for according at least to first transmission power, the color of each pixel cell and An at least frequency, determines at least one first color of to be transmitted information association corresponding with first transmission power is sent Pixel subelement.

The brightness of visible light signal can affect the transmission performance of the information that modulates thereon, for example, the bit error rate, etc..In order to The transmission performance of to be transmitted information of each embodiment of the application by transmitting is provided, in alternatively possible implementation, described Show feature when the display device shows an at least image in addition to the color of each pixel cell, may also include described aobvious The brightness of each pixel cell when showing that equipment shows an at least image.In this implementation, such as shown in Fig. 2 (c), second is true Cover half block 240 also includes：

3rd determining unit 246, for the brightness according at least to first transmission power and each pixel cell, Determine described in determined by the second determining unit 244 of information association to be transmitted corresponding with first transmission power is sent extremely At least part of in few one first colored pixels subelement.

For example, as combined described by the second determining unit 244, if P_R≥P_t, then can select from red pixel subelement A part, so that the 3rd transmission power of corresponding optical signal is equal or slightly larger than P_t, during selection, preferably fluorescent lifetime accounts for luminous The ratio in cycle is close to the red pixel subelement of 50% pixel cell, so that the 3rd transmission power of corresponding optical signal etc. In or be slightly larger than P_t.

In another possible implementation, the display feature includes that the display device shows an at least figure The brightness of each pixel cell during picture.In this implementation, the second determining module 240 according at least to first transmission power with And the brightness of each pixel cell, determine that the display of to be transmitted information association corresponding with first transmission power is sent sets Standby upper partial pixel unit.Specifically, as shown in Fig. 2 (d), the second determining module 240 may include：

4th determining unit 245, for the brightness according at least to each pixel cell and first transmission power Determine an at least pixel cell of to be transmitted information association corresponding with first transmission power is sent.Preferably, described extremely A few pixel cell includes that fluorescent lifetime accounts for the pixel cell that the ratio of light period is close to 50%.

Specifically, institute should be equal or slightly larger than in the transmission power of the optical signal for transmitting information to be transmitted determined by satisfaction On the premise of stating the first transmission power, prioritizing selection fluorescent lifetime accounts for the pixel cell that the ratio of light period is closest to 50%. For example, all pixels unit for fluorescent lifetime being accounted for the ratio of light period closest to 50% is referred to as the first pixel cell set, Transmission power according to each pixel cell of display device determines total transmission power P1 of the first pixel cell set, if P1 >= P_t, then a part can be selected from the first pixel cell set, so that the 4th transmission power of corresponding optical signal is equal to or omits More than P_t；If P1 is ＜ P_t, then all pixels unit in the first pixel cell set is may be selected, and luminous week is accounted in fluorescent lifetime The ratio of phase is close to selected section in 50% pixel cell, so that the 4th transmission power of corresponding optical signal is equal to or bigger In P_t.

In another possible implementation, described display feature except include the display device show described at least During one image outside the brightness of each pixel cell, each pixel cell when also including that the display device shows an at least image Color.In such implementation, such as shown in Fig. 2 (e), the second determining module 240 also includes：

5th determining unit 247, determines at least one frequency for the responsiveness of the electrooptical device according at least to receiving terminal Rate.

Can send out when showing an at least image from the display device according to responsiveness order from high to low is made An at least frequency described in determining in the frequency of the optical signal for going out.For example, it is assumed that the optical signals ruddiness, green that display device sends Light and blue light are formed, and the electrooptical device of receiving terminal is followed successively by R to the responsiveness of red, green, blue_R、R_G、R_B, and There is R_R＞ R_B＞ R_G, it may be determined that one frequency of responsiveness highest, namely the frequency of ruddiness.More than one can be determined according to responsiveness Frequency, for example, according to a highest responsiveness scope, determines two kinds of frequencies, the i.e. frequency of the frequency of ruddiness and blue light.

6th determining unit 249, for according at least to an at least frequency, first transmission power and described each The color of pixel cell, determines the 4th determining unit of to be transmitted information association corresponding with first transmission power is sent At least part of in an at least pixel cell determined by 245.

Specifically, institute should be equal or slightly larger than in the transmission power of the optical signal for transmitting information to be transmitted determined by satisfaction On the premise of stating the first transmission power, according to receiving terminal electrooptical device responsiveness height determine described in an at least picture Plain unit at least part of.For example, as combined described by the 4th determining unit 245, if P1 >=P_t, then can be from first set picture At least one in first set pixel cell is selected in plain unit according to the height of the responsiveness of the electrooptical device of receiving terminal First colored pixels subelement, so that the 5th transmission power of corresponding optical signal is equal or slightly larger than P_t；If P1 is ＜ P_t, then may be used The all pixels unit in the first pixel cell set is selected, and the ratio time for light period being accounted in fluorescent lifetime is close to 50% Selected section in pixel cell, or according to receiving terminal photoelectric conversion device responsiveness height, select remaining pixel list An at least pixel subelement included by unit, so that the 5th transmission power of corresponding optical signal is equal or slightly larger than P_t.

Additionally, in the device of the embodiment of the present application, first transmission power can be set in advance, Neng Gouyou Acquired in the main body of the method for executing the present embodiment.Correspondingly, as shown in Fig. 2 (f), the first determining module 220 includes：

Receiving unit 222, for receiving the first transmission power of at least one information to be transmitted.

First transmission power is alternatively what the main body itself of the method for executing the present embodiment determined.Correspondingly, as Fig. 2 G, shown in (), the first determining module 220 may include：

7th determining unit 224, described for showing according at least to the performance parameter of receiving terminal and the display device Display feature during an at least image, the first transmission power of at least one information to be transmitted described in determination.

The transmission of visible light signal can be affected by originator and receiving end hardware performance and transmission environment.In order to will be to be transmitted Information is sent to specific receiving terminal by the form of visible light signal, and the method for the embodiment of the present application is according to the aobvious of display device Show that feature and transmission environment etc. determine the first transmission power.Specifically, the 7th determining unit 224 may include：

First determination subelement 2242, for showing display during an at least image according at least to the display device The effective propagation path of at least one information to be transmitted described in feature determination.

Second determination subelement 2244, joins for the performance according at least to the effective propagation path and the receiving terminal First transmission power of at least one information to be transmitted described in number determination.

Second determination subelement 2244 can determine first transmission power P according to formula (1)_t.

The performance parameter of receiving terminal can be known to the device of the embodiment of the present application, or can be by communicating with such as receiving terminal Mode obtain.Correspondingly, as shown in Fig. 2 (h), the first determining module 220 also includes：

8th determining unit 226, for determining the performance parameter of an at least receiving terminal.For example, by from corresponding reception The mode that end obtains determines.The performance parameter of receiving terminal at least includes the responsiveness of the electrooptical device of receiving terminal, and (it is right to include The responsiveness of various frequencies).

Additionally, described display feature may include the display coverage of display device, the display device shows described in extremely Color and/or brightness during a few image, the respective display coverage of an at least image, the display device show institute State the color of the corresponding pixel cell of each image during an at least image and/or at least one in brightness.Display device sends 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 lead to Cross mature algorithm in prior art and determine that the maximum transmission distance is alternatively for known to the first determination subelement 2242 Information, such as the first determination subelement 2242 can have recorded, by searching, the corresponding relation for showing feature and maximum transmission distance The mode of table obtain.The form of the table can be as shown in table 1, and the merely illustrative purpose of wherein each table item index, according to difference Display feature and other factors (resolution of eye being for example mentioned below) can be with table as multiple types.A kind of possible Implementation in, the first determination subelement 2242 can according at least to the display coverage of the display device and show institute Color and/or brightness when stating an at least image, determine described at least one information to be transmitted effective propagation path.

In the information to be transmitted implementation related to the picture material shown by display device, the first determination subelement According at least to an at least image is respective, 2242 can show that coverage and display device show an at least image When the color of the corresponding pixel cell of each image and/or brightness, determine described at least one information to be transmitted effective propagation path.

For different people, the spatial resolution of its eye may be different, therefore, carries out in order to more targeted The transmission of information to be transmitted, the first determination subelement 2242 can be according at least to the display coverage of the display device, human eyes Color and/or brightness when showing an at least image of spatial resolution and display device, determine described at least one treat The effective propagation path of transmission information.

Or first determination subelement 2242 can according at least to an at least image respective show coverage, 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, the effective propagation path of at least one information to be transmitted described in determination.

To sum up, the device of the embodiment of the present application can obtain wider modulation bandwidth, improve the utilization rate of resource, save aobvious Show the energy consumption of equipment, and visible light signal transmission performance is higher.

The method and device of each embodiment of the application is further illustrated below by instantiation.

By taking scene shown in Fig. 3 as an example.Display device 320 is used for showing advertisement, including multiple RGB LED pixel units.Aobvious Show display image 322 and image 324 on equipment 320, and image 322 and image 324 respective show area coverage S, color C and Brightness B is as shown in Figure 3.In view of display device 320 is applied to show this scene of advertisement, model can be covered to the display of each image In enclosing, (namely it can be seen that in the range of each image) sends and each image with visible light signal receiving ability receiving device The related information of upper display content, and the method according to each embodiment of the application, by the information with the part picture of display device 320 The optical signal sent by plain unit is used as carrier signal.In scene shown in Fig. 3, (the application is each to employ the fixed pulse width cycle " light period " in embodiment) pulsewidth modulation (PWM) mode control the color of 320 each pixel cell of display device And brightness, and by variable pulse position modulation (VPPM) by modulates information to be transmitted to determined by optical signal, wherein, respectively The different colours is presented by pixel cell by its pulse width period each pixel subelement luminous duration difference determine, each pixel The fluorescent lifetime of unit accounts for the ratio of light period and determines its brightness.According to the method and device of each embodiment of the application, pass through Search the determination of corresponding effective propagation path table：To the receiving device 340 with the distance between display device 320 less than D1 Send the information related to image 324；Send and figure to the receiving device 360 with the distance between display device 320 less than D2 Information as 322 correlations.

And the method and device according to each embodiment of the application, (divided in the scene of Fig. 3 according to respective effective transmission range Wei D1 and D2) the first transmission power of each information to be transmitted is determined according to formula (1), wherein, with 322 display content phase of image First transmission power of the information of pass is P_t2, the first transmission power of the information related to image 324 is P_t1.From receiving device 360 know frequency response degree highest of its electrooptical device for ruddiness, according to each during 320 display image 324 of display device The color of pixel cell determines that the transmission power of 320 red channel of display device is P_R1If, P_R1≥P_t1, then can be from all redness Select a part in pixel subelement, and preferably fluorescent lifetime account for light period ratio be close to 50% pixel cell redness Pixel subelement, so that the transmission power of corresponding optical signal is equal or slightly larger than P_t1；If P_R1＜ P_t1, then may be selected all red Color pixel subelement, and from the blue pixel subelement of responsiveness second select a part so that corresponding optical signal send out Penetrate power and be equal or slightly larger than P_t1.

For receiving device 340, fluorescent lifetime is accounted for all pixels unit of the ratio of light period closest to 50% and is claimed For the first pixel cell set, the transmission power according to each pixel cell of display device 320 determines the first pixel cell set Total transmission power is P2, if P2 >=P_t2, and the electrooptical device of receiving device 340 for the frequency of blue light responsiveness most Height, then can select an at least blue light pixel subelement, so that the transmitting work(of corresponding optical signal from the first pixel cell set Rate is equal or slightly larger than P_t2；If P2 is ＜ P_t2, then all pixels unit in the first pixel cell set is may be selected, and luminous Time accounts for the ratio of light period and time is close to selected section in 50% pixel cell, or selects included by remaining pixel cell An at least blue pixel subelement so that the transmission power of corresponding optical signal is equal or slightly larger than P_t2.

After determining for modulating the optical signal of corresponding information, concurrent according to the adjustment mode modulation intelligence of VPPM Send.

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, for the net element communication 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 be arranged to implement the 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 executes following steps：

In program 432 each step implement corresponding in the corresponding steps and unit that may refer in above-described embodiment Description, will not be described here.Those skilled in the art can be understood that, for convenience and simplicity of description, above-mentioned retouch The equipment that states and the specific work process of module, may be referred to the corresponding process description in preceding method embodiment, and here is 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) extremely Visible light signal launch control unit 200 in Fig. 2 (h) described by Subgraph.Additionally, also including to realize transmitting visible light signal Necessary modulation module 520, amplification module etc..

Those skilled in the art can be understood that, for convenience and simplicity of description, the equipment of foregoing description With the specific work process of module, the corresponding description in aforementioned means embodiment is may be referred to, be will not be described 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 execute other realizations.In general, program module include execute 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 compiling Journey consumption electronic product, minicom, mainframe computer etc., it is possible to use task is by being connected by communication network wherein In the DCE that remote processing devices are executed.In a distributed computing environment, program module can be located at local and remote In both journey memory storage device.

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, being capable of being implemented in combination in electronic hardware or computer software and electronic hardware.These functions are actually Executed with hardware or software mode, the application-specific depending on technical scheme and design constraint.Professional and technical personnel Each specific application can be used different methods to described function is realized, but this realization is it is not considered that exceed Scope of the present application.

If the function realized using in the form of SFU software functional unit and as independent production marketing or use when, permissible It is stored 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 by 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, is used including some instructions so that a computer equipment (can be individual People's computer, server, or network equipment etc.) execute each embodiment methods described of the application all or part of step. And aforesaid 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 is come the physics volatibility realized and non-volatile, removable and can not be because of east Jie Matter.Computer read/write memory medium is specifically included, but is not limited to, USB flash disk, portable hard drive, 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 technology, CD-ROM, numeral are many Functional disc (DVD), HD-DVD, blue light (Blue-Ray) or other light storage devices, tape, disk storage or other magnetic storage Equipment or any other medium that can be used for storing information needed and being 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 own The technical scheme of equivalent falls within scope of the invention, and the scope of patent protection of the present invention should be defined by the claims.

Claims

1. a kind of visible light signal emission control method, it is characterised in that methods described includes：

Show display feature during an at least image according at least to first transmission power and display device, determine and send The partial pixel unit of the display device of the corresponding information association to be transmitted of first transmission power；

The optical signal that at least one modulates information to be transmitted is sent by control to the partial pixel unit of the association of the determination On.

2. method according to claim 1, it is characterised in that the determination is corresponding with first transmission power is sent In the partial pixel unit of the display device of information association to be transmitted：

According at least to the responsiveness of the electrooptical device of first transmission power, the display feature and receiving terminal, really The partial pixel unit of the display device of fixed to be transmitted information association corresponding with first transmission power is sent.

3. method according to claim 2, it is characterised in that it is described that the display feature includes that the display device shows The color of each pixel cell during an at least image；

The partial pixel list of the display device of the determination to be transmitted information association corresponding with first transmission power is sent Unit includes：

An at least frequency is determined according at least to the responsiveness；

According at least to first transmission power, the color of each pixel cell and an at least frequency, determine and send out Send at least one first colored pixels subelement of the corresponding information association to be transmitted of first transmission power.

4. method according to claim 3, it is characterised in that the transmitting work(of at least one first colored pixels subelement Rate is the second transmission power, and second transmission power is equal to first transmission power.

5. method according to claim 3, it is characterised in that the display feature also includes that the display device shows institute State the brightness of each pixel cell during an at least image；

The partial pixel list of the display device of the determination to be transmitted information association corresponding with first transmission power is sent Unit also includes：

According at least to the brightness of first transmission power and each pixel cell, determine and send the first transmitting work( At least part of at least one first colored pixels subelement of the corresponding information association to be transmitted of rate.

6. method according to claim 5, it is characterised in that at least portion of at least one first colored pixels subelement Dividing includes that fluorescent lifetime accounts for the pixel subelement that the ratio of light period is equal to 50% pixel cell.

7. method according to claim 6, it is characterised in that at least portion of at least one first colored pixels subelement The transmission power that divides is the 3rd transmission power, and the 3rd transmission power is equal to first transmission power.

8. method according to claim 2, it is characterised in that it is described that the display feature includes that the display device shows The brightness of each pixel cell during an at least image；

According at least to the brightness of first transmission power and each pixel cell, determine and send the first transmitting work( An at least pixel cell of the corresponding information association to be transmitted of rate.

9. method according to claim 8, it is characterised in that an at least pixel cell includes that fluorescent lifetime accounts for correspondence Light period ratio be equal to 50% pixel cell.

10. method according to claim 8, it is characterised in that the transmission power of an at least pixel cell is the 4th Transmission power, the 4th transmission power are equal to first transmission power.

11. methods according to claim 8, it is characterised in that the display feature also includes that the display device shows The color of each pixel cell during an at least image；

Responsiveness according at least to the electrooptical device of receiving terminal determines an at least frequency；

According at least to first transmission power, the color of each pixel cell and an at least frequency, determine and send out Send at least part of in an at least pixel cell of the corresponding information association to be transmitted of first transmission power.

12. methods according to claim 11, it is characterised in that at least part of in an at least pixel cell Power is penetrated for the 5th transmission power, the 5th transmission power is equal to first transmission power.

13. methods according to claim 3 or 11, it is characterised in that described according at least to the responsiveness determine at least In one frequency：

According to making responsiveness order from high to low, the light that sends when showing an at least image from the display device An at least frequency described in determining in the frequency of signal.

14. methods according to any one of claim 1 to 12, it is characterised in that at least one letter to be transmitted of the determination First transmission power of breath includes：

First transmission power of at least one information to be transmitted described in receiving.

15. methods according to any one of claim 1 to 12, it is characterised in that at least one letter to be transmitted of the determination First transmission power of breath includes：

Performance parameter and the display device according at least to receiving terminal shows display feature during an at least image, really First transmission power of fixed at least one information to be transmitted.

16. methods according to claim 15, it is characterised in that the first of at least one information to be transmitted described in the determination Transmission power includes：

According at least to the effective propagation path for showing at least one information to be transmitted described in feature determination；

Performance parameter according to the effective propagation path and the receiving terminal determines first transmission power.

17. methods according to claim 16, it is characterised in that the effective propagation path be the receiving terminal with described The distance between display device.

18. methods according to claim 16, it is characterised in that the display feature includes：The display device aobvious Color and/or brightness when showing that coverage and the display device show an at least image；

Described according at least to described show 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 shows an at least image Color and/or brightness, the effective propagation path of at least one information to be transmitted described in determination.

19. methods according to claim 16, it is characterised in that the display feature includes：An at least image is each From display coverage and the display device each image corresponding pixel cell when showing an at least image color Color and/or brightness；

Show that coverage and the display device show an at least figure according at least to an at least image is respective The color of the corresponding pixel cell of each image and/or brightness during picture, determine described at least one information to be transmitted effective transmission distance From.

20. methods according to claim 16, it is characterised in that the display feature includes：The display device aobvious Color when showing that coverage, the spatial resolution of human eye and the display device show an at least image and/or bright Degree；

Display coverage, the spatial resolution of human eye according at least to the display device and the display device show institute Color and/or brightness when stating an at least image, determine described at least one information to be transmitted effective propagation path.

21. methods according to claim 16, it is characterised in that the display feature includes：An at least image is each From display coverage, the spatial resolution of human eye and the display device show an at least image when each image pair The color of the pixel cell that answers and/or brightness；

Show that coverage, the spatial resolution of human eye and display device show according at least to an at least image is respective The color of the corresponding pixel cell of each image and/or brightness during an at least image, determine described at least one information to be transmitted Effective propagation path.

22. methods according to any one of claim 1 to 12, it is characterised in that methods described also includes：

Determine the performance parameter of receiving terminal.

23. methods according to claim 22, it is characterised in that the performance parameter includes the optical-electrical converter of receiving terminal The responsiveness of part.

24. methods according to claim 23, it is characterised in that the performance parameter also includes：

The receiving terminal receives the noise power of the minimum signal to noise ratio required by demodulation visible light signal and the receiving terminal.

25. methods according to any one of claim 1 to 12, it is characterised in that the pixel cell at least includes One colored pixels subelement, the second colored pixels subelement and the 3rd colored pixels subelement.

26. methods according to claim 25, it is characterised in that the pixel cell is RGB LED.

27. a kind of visible light signal launch control units, it is characterised in that described device includes：

One second determining module, during for showing an at least image according at least to first transmission power and display device Show feature, determine the partial pixel list of the display device of to be transmitted information association corresponding with first transmission power is sent Unit；

One control module, for controlling the partial pixel list of at least one modulates information to be transmitted to the association of the determination On the optical signal that unit sends.

28. devices according to claim 27, it is characterised in that second determining module is used for according at least to described the The responsiveness of the electrooptical device of one transmission power, the display feature and receiving terminal, determines described first with transmission Penetrate the partial pixel unit of the display device of the corresponding information association to be transmitted of power.

29. devices according to claim 28, it is characterised in that the display feature includes that the display device shows institute State the color of each pixel cell during an at least image；

Second determining module includes：

One first determining unit, for determining an at least frequency according at least to the responsiveness；

One second determining unit, for according at least to first transmission power, the color of each pixel cell and described An at least frequency, determines at least one first colored pixels of to be transmitted information association corresponding with first transmission power is sent Subelement.

30. devices according to claim 29, it is characterised in that the display feature also includes that the display device shows The brightness of each pixel cell during an at least image；

Second determining module also includes：

One the 3rd determining unit, for the brightness according at least to first transmission power and each pixel cell, determines In at least one first colored pixels subelement described in information association to be transmitted corresponding with first transmission power is sent At least partly.

31. devices according to claim 28, it is characterised in that the display feature includes that the display device shows institute State the brightness of each pixel cell during an at least image；

Second determining module includes：

One the 4th determining unit, for the brightness according at least to first transmission power and each pixel cell, determines An at least pixel cell of to be transmitted information association corresponding with first transmission power is sent.

32. devices according to claim 31, it is characterised in that the display feature also includes that the display device shows The color of each pixel cell during an at least image；

Second determining module also includes：

One the 5th determining unit, determines an at least frequency for the responsiveness of the electrooptical device according at least to receiving terminal；

One the 6th determining unit, for according at least to first transmission power, the color of each pixel cell and described An at least frequency, determines an at least pixel cell of to be transmitted information association corresponding with first transmission power is sent In at least part of.

33. devices according to any one of claim 27 to 32, it is characterised in that first determining module includes：

One receiving unit, for receiving the first transmission power of at least one information to be transmitted.

34. devices according to any one of claim 27 to 32, it is characterised in that first determining module includes：

One the 7th determining unit, for showing described at least one according at least to the performance parameter of receiving terminal and the display device Display feature during image, the first transmission power of at least one information to be transmitted described in determination.

35. devices according to claim 34, it is characterised in that the 7th determining unit includes：

One first determination subelement, for according at least to the effective biography for showing at least one information to be transmitted described in feature determination Defeated distance；

One second determination subelement, described in determining according to the performance parameter of the effective propagation path and the receiving terminal First transmission power.

36. devices according to claim 35, it is characterised in that the display feature includes：The display device aobvious Color and/or brightness when showing that coverage and the display device show an at least image；

First determination subelement shows according at least to the display coverage of the display device and the display device Color and/or brightness during an at least image, the effective propagation path of at least one information to be transmitted described in determination.

37. devices according to claim 35, it is characterised in that the display feature includes：An at least image is each From display coverage and the display device each image corresponding pixel cell when showing an at least image color Color and/or brightness；

According at least to an at least image is respective, first determination subelement shows that coverage and the display set Standby show the color of the corresponding pixel cell of each image and/or brightness during an at least image, described in determination, at least one is to be passed The effective propagation path of defeated information.

38. devices according to claim 35, it is characterised in that the display feature includes：The display device aobvious Color when showing that coverage, the spatial resolution of human eye and the display device show an at least image and/or bright Degree；

First determination subelement according at least to the display coverage of the display device, the spatial resolution of human eye and Color and/or brightness when the display device shows an at least image, determine described in the having of at least one information to be transmitted Effect transmission range.

39. devices according to claim 35, it is characterised in that the display feature includes：An at least image is each From display coverage, the spatial resolution of human eye and the display device show an at least image when each image pair The color of the pixel cell that answers and/or brightness；

First determination subelement is according at least to the respective spatial discrimination for showing coverage, human eye of an at least image Rate and display device show the color of the corresponding pixel cell of each image and/or brightness during an at least image, determine institute State the effective propagation path of at least one information to be transmitted.

40. devices according to claim 34, it is characterised in that first determining module also includes：

One the 8th determining unit, for determining the performance parameter of receiving terminal.

A kind of 41. visible light signals launch equipment, it is characterised in that the equipment is included according to arbitrary in claim 27 to 40 Visible light signal launch control unit described in.

42. equipment according to claim 41, it is characterised in that the equipment also includes：

One modulation module, for carrying out at least one information to be transmitted under the control of the visible light signal launch control unit Modulation.