WO2018132984A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2018132984A1
WO2018132984A1 PCT/CN2017/071604 CN2017071604W WO2018132984A1 WO 2018132984 A1 WO2018132984 A1 WO 2018132984A1 CN 2017071604 W CN2017071604 W CN 2017071604W WO 2018132984 A1 WO2018132984 A1 WO 2018132984A1
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WO
WIPO (PCT)
Prior art keywords
image
light
encoded
liquid crystal
optical rotation
Prior art date
Application number
PCT/CN2017/071604
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English (en)
Chinese (zh)
Inventor
李强
姜彤
董晨
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/071604 priority Critical patent/WO2018132984A1/fr
Priority to CN201780082862.5A priority patent/CN110168963B/zh
Publication of WO2018132984A1 publication Critical patent/WO2018132984A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/116—Visible light communication

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a communication method and apparatus.
  • the two-dimensional code is a black and white pattern that is distributed in a plane (two-dimensional direction) by a certain geometric pattern to record data symbol information; and skillfully utilizes the logic foundation of the computer to form the basic logic of the computer.
  • the concept of "0" and "1" bit streams uses a number of geometric shapes corresponding to binary to represent literal numerical information, and is automatically read by an image input device or an optical scanning device to implement automatic information processing.
  • the intensity of the light is usually generated by the liquid crystal pixel on the display screen, so that the user can directly see the effect of the two-dimensional code image displayed on the display screen.
  • the display screen is used as a lighting tool at the same time, the illumination effect of the display screen is greatly reduced.
  • an embodiment of the present invention provides a communication method and apparatus.
  • an embodiment of the present invention provides a communication method, including:
  • the transmitting end acquires a coded image, where the coded image includes first coded data and second coded data;
  • the transmitting end generates a first optical rotation and a second optical rotation including the coded image through a display screen
  • first optical rotation is generated by the first display point for displaying the first encoded data
  • second optical rotation is by the display screen for displaying the second encoded data
  • the second pixel is generated.
  • the transmitting end generates a first optical rotation and a second optical rotation including the coded image through a display screen, including:
  • the transmitting end generates a first polarization direction light at the first pixel point through a display screen, and generates a second polarization direction light beam at the second pixel point;
  • the transmitting end converts the first polarization direction light into the first rotation and converts the second polarization direction light into the second rotation.
  • the display screen includes: a linear polarizing plate and a liquid crystal pixel array, wherein the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array;
  • the transmitting end generates a first polarization direction ray at the first pixel point through the display screen, and generates a second polarization direction ray at the second pixel point, including:
  • the transmitting end polarizes the light from the light source through the linear polarizing plate to obtain polarized light vibrating in a predetermined direction;
  • the transmitting end drives the liquid crystal pixel array, converts the polarized light into a first polarization direction light through the first liquid crystal pixel array, and converts the polarized light into a second polarization through the second liquid crystal pixel array Directional light.
  • the display screen includes a 1/4 wave plate; the transmitting end converts the first polarization direction light into the first rotation light, and Converting the second polarization direction light into the second rotation, comprising:
  • the angle between the polarization direction of the linear polarizer and the fast axis direction of the quarter wave plate is 45 degrees or 135 degrees.
  • the display screen includes a circular polarizing plate and a liquid crystal pixel array
  • the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array
  • the transmitting end generates a first optical rotation and a second optical rotation including the coded image through a display screen, including:
  • the transmitting end converts light from the light source into an optical rotation in a preset direction by the circular polarizing plate
  • the transmitting end drives the liquid crystal pixel array, and the optical rotation in the preset direction is converted into a first optical rotation by the first liquid crystal pixel array, and the second liquid crystal pixel array is used in the preset direction.
  • the optical rotation is converted into a second optical rotation;
  • first optical rotation and the second optical rotation have different rotation directions.
  • the sending end acquires a coded image, including:
  • the transmitting end acquires three to-be-transmitted encoded images, wherein the three to-be-transmitted encoded images are black and white two-dimensional code images, and the three to-be-transmitted encoded images include a first encoded image, a second encoded image, and a Three-coded image;
  • each liquid crystal pixel in the liquid crystal pixel array includes three channels of R, G, and B;
  • Converting the polarized light into a first polarization direction ray by the first liquid crystal pixel array, and converting the polarized light into a second polarization direction ray by the second liquid crystal pixel array including:
  • the B channel in the liquid crystal pixel array of the second encoded data in the black coded image converts the polarized light into the second polarized direction ray.
  • each liquid crystal pixel in the liquid crystal pixel array includes three channels of R, G, and B;
  • Converting the optical rotation in the preset direction into the first optical rotation by the first liquid crystal pixel array, and converting the optical rotation in the preset direction into the second optical rotation through the second liquid crystal pixel array including:
  • the transmitting end passes through a liquid crystal pixel for displaying the first encoded data in the red-black encoded image
  • An R channel in the array, the optical rotation in the predetermined direction is converted into the first optical rotation, and the R channel in the liquid crystal pixel array for displaying the second encoded data in the red-black encoded image is The optical rotation in the preset direction is converted into the second optical rotation;
  • the transmitting end converts the optical rotation in the preset direction into the first optical rotation by using a G channel in the liquid crystal pixel array for displaying the first encoded data in the green-black encoded image, and is used for displaying a G channel in the liquid crystal pixel array of the second encoded data in the green black coded image, converting the optical rotation in the preset direction into the second optical rotation;
  • the three to-be-transmitted coded images respectively include three positioning identifiers, where the three positioning identifiers are a first positioning identifier, a second positioning identifier, and Third positioning identifier;
  • the red-black encoded image includes only the first positioning identifier
  • the green-black encoded image includes only the second positioning identifier
  • the blue-black encoded image includes only the third positioning identifier
  • the sending end includes a visible light communication VLC module, and the method further includes:
  • the VLC module acquires data to be sent
  • the VLC module controls light generated by the light source, and a blinking state and an intensity state of the light generated by the light source correspond to the data to be transmitted.
  • the transmitting end generates a first optical rotation and a second optical rotation including the coded image through a display screen, including:
  • the transmitting end acquires light generated from a light source through the display screen
  • the transmitting end converts the light received by the first pixel into a first optical rotation, and converts the light received by the second pixel into a second optical rotation.
  • the method further includes:
  • the transmitting end acquires the length a and the width b of the display screen
  • the transmitting end When a ⁇ n ⁇ b, the transmitting end simultaneously displays n coded images of size b ⁇ b on the display screen, where n is a positive integer and a and b are positive numbers.
  • the method further includes:
  • the transmitting end receives information that is sent by the receiving end and includes a minimum resolution
  • the transmitting end determines the first pixel point and the second pixel point according to the minimum resolution.
  • the obtaining, by the sending end, the encoded image includes:
  • the transmitting end sends a signal calibration image to the receiving end
  • the transmitting end receives the image identification information sent by the receiving end, where the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the image sensor in the receiving end;
  • the transmitting end generates the encoded image according to the image identification information by using data to be transmitted.
  • the method further includes:
  • the transmitting end uses the integral of the frame rate of the image sensor as a refresh frame rate
  • the transmitting end sends the first optical rotation and the second optical rotation to the receiving end according to the refresh frame rate.
  • an embodiment of the present invention further provides a communication method, including:
  • the receiving end collects light emitted by the transmitting end, and the light includes a first optical rotation and a second optical rotation;
  • the receiving end converts the acquired first optical rotation and the second optical rotation into a coded image, where the coded image includes first coded data and second coded data.
  • the receiving end converts the collected first optical rotation and the second optical rotation into a coded image, including:
  • the receiving end converts the light into a preset polarization direction light through a circular polarizing plate
  • the receiving end collects the preset polarization direction light through an image sensor to obtain a coded image.
  • the light emitted by the transmitting end includes light of three channels of R, G, and B, and the light of the three channels of R, G, and B respectively includes a pre-light.
  • the receiving end acquires the preset polarization direction light by using an image sensor, and obtaining the encoded image includes:
  • the receiving end separately collects preset polarization direction light rays including three channels R, G, and B through an image sensor, and respectively generates a first encoded image, a second encoded image, and a third encoded image;
  • the receiving end acquires a color corrected image, and respectively corrects the first encoded image, the second encoded image, and the third encoded image according to the color corrected image.
  • the first coded image, the The second encoded image and the third encoded image each include a positioning identifier, and the method further includes:
  • the receiving end determines whether the positioning identifier is first encoded data
  • the receiving end determines that the positioning identifier is not the first encoded data
  • the receiving end performs image inverse color processing on the first encoded image, the second encoded image, and the third encoded image, respectively.
  • the method further includes:
  • the receiving end acquires blinking state or intensity state information of the light, and converts the blinking state or the intensity state information into corresponding receiving data.
  • the method further includes:
  • the receiving end identifies the sub-image in the corrected image, and determines that the sub-image with the lowest definition in the corrected image is recognized;
  • the receiving end determines a minimum resolution, where the minimum resolution is a resolution corresponding to the lowest-resolution sub-image in the sub-image;
  • the receiving end sends information including the minimum resolution to the transmitting end.
  • the method further includes:
  • the receiving end generates image identification information for the signal calibration image, where the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the image sensor in the receiving end;
  • the receiving end sends the image identification information to the transmitting end.
  • the coded image includes a location identifier
  • the method further includes:
  • the receiving end determines whether the positioning identifier is second encoded data
  • the receiving end determines that the positioning identifier is not the second encoded data, the receiving end performs image inversion processing on the encoded image.
  • an embodiment of the present invention provides a sending end, including:
  • a processor configured to acquire a coded image, where the coded image includes first coded data and second coded data;
  • a transmitter for generating a first optical rotation and a second optical rotation including the coded image through a display screen
  • first optical rotation is generated by the first display point for displaying the first encoded data
  • second optical rotation is by the display screen for displaying the second encoded data
  • the second pixel is generated.
  • the processor is further configured to generate a first polarization direction light at the first pixel point through a display screen, and generate a second polarization direction light beam at the second pixel point;
  • the transmitter is further configured to convert the first polarization direction light into the first rotation and convert the second polarization direction light into the second rotation.
  • the display screen includes: a linear polarizing plate and a liquid crystal pixel array, wherein the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array;
  • the processor is further configured to polarize light from the light source through the linear polarizing plate to obtain polarized light vibrating in a predetermined direction;
  • the processor is further configured to drive the liquid crystal pixel array, convert the polarized light into a first polarization direction light through the first liquid crystal pixel array, and convert the polarized light through the second liquid crystal pixel array Light rays in the second polarization direction.
  • the display screen includes a 1/4 wave plate
  • the transmitter is further configured to pass the first polarization direction light and the second polarization direction light into the 1/4 wave plate, and convert the first polarization direction light into a first rotation, The second polarization direction light is converted into the second rotation light;
  • the angle between the polarization direction of the linear polarizer and the fast axis direction of the quarter wave plate is 45 degrees or 135 degrees.
  • the display screen includes a circular polarizing plate and a liquid crystal pixel array
  • the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array
  • the transmitter is further configured to convert light from the light source into an optical rotation in a preset direction by using the circular polarizing plate;
  • the transmitter is further configured to drive the liquid crystal pixel array, convert the optical rotation in the preset direction into a first optical rotation through the first liquid crystal pixel array, and use the second liquid crystal pixel array to Setting the optical rotation in the direction to be the second optical rotation;
  • first optical rotation and the second optical rotation have different rotation directions.
  • the processor is further configured to acquire three to-be-transmitted encoded images, where the three to-be-transmitted encoded images are black and white two-dimensional code images, and the three to-be-transmitted encoded images include a first encoded image and a second image. a coded image and a third coded image;
  • the processor is further configured to convert the first encoded image into a red-black encoded image, wherein the red color represents first encoded data in the first encoded image, and the black represents the first encoded image Second encoded data in the image;
  • the processor is further configured to convert the second encoded image into a green-black encoded image, wherein the green color indicates first encoded data in the second encoded image, and the black indicates the second encoded image Second encoded data in the image;
  • the processor is further configured to convert the third encoded image into a blue-black encoded image, wherein the blue represents first encoded data in the third encoded image, and the black represents the third Encoding the second encoded data in the image.
  • each liquid crystal pixel in the liquid crystal pixel array includes three channels of R, G, and B;
  • the processor is further configured to convert the polarized light into the first polarized direction light by using an R channel in a liquid crystal pixel array for displaying first encoded data in the red-black encoded image, by using Displaying an R channel in the liquid crystal pixel array of the second encoded data in the red-black encoded image, converting the polarized light into the second polarized direction light;
  • the processor is further configured to convert the polarized light into the first polarization direction light by using a G channel in a liquid crystal pixel array for displaying first encoded data in the green-black encoded image, by using Displaying a G channel in the liquid crystal pixel array of the second encoded data in the green-black encoded image, converting the polarized light into the second polarized direction light;
  • the processor is further configured to convert the polarized light into the first polarization direction light by using a B channel in a liquid crystal pixel array for displaying first encoded data in the blue-black encoded image, by using Displaying a B channel in the liquid crystal pixel array of the second encoded data in the blue-black coded image, converting the polarized light into the second polarized direction light.
  • each liquid crystal pixel in the liquid crystal pixel array includes three channels of R, G, and B;
  • the transmitter is further configured to convert the optical rotation in the preset direction into the first optical rotation by using an R channel in the liquid crystal pixel array for displaying the first encoded data in the red-black encoded image, An R channel in the liquid crystal pixel array for displaying the second encoded data in the red-black coded image, converting the optical rotation in the preset direction into the second optical rotation;
  • the transmitter is further configured to pass a liquid for displaying the first encoded data in the green-black encoded image a G channel in the pixel array, converting the optical rotation in the predetermined direction into the first optical rotation, by using a G channel in the liquid crystal pixel array for displaying the second encoded data in the green-black encoded image, The optical rotation in the preset direction is converted into the second optical rotation;
  • the transmitter is further configured to convert the optical rotation in the preset direction into the first optical rotation by using a B channel in the liquid crystal pixel array for displaying the first encoded data in the blue-black encoded image, a B channel in the liquid crystal pixel array for displaying the second encoded data in the blue-black coded image, converting the optical rotation in the preset direction into the second optical rotation.
  • the three to-be-transmitted coded images respectively include three positioning identifiers, where the three positioning identifiers are a first positioning identifier, a second positioning identifier, and Third positioning identifier;
  • the red-black encoded image includes only the first positioning identifier
  • the green-black encoded image includes only the second positioning identifier
  • the blue-black encoded image includes only the third positioning identifier
  • the present invention includes a visible light communication VLC module, and the sending end further includes:
  • the processor is further configured to acquire data to be sent by using the VLC module
  • the processor is further configured to control, by the VLC module, light generated by the light source, where a blinking state and an intensity state of the light generated by the light source correspond to the data to be transmitted.
  • the sending end further includes: a receiver
  • the receiver is configured to obtain light generated by a light source through the display screen
  • the transmitter is further configured to convert the light received by the first pixel into a first optical rotation, and convert the light received by the second pixel into a second optical rotation.
  • a receiver configured to acquire a length a and a width b of the display screen
  • the processor is further configured to simultaneously display n coded images of size b ⁇ b on the display screen, where n is a positive integer, and a and b are positive numbers. .
  • the transmitter is further configured to send a corrected image to the receiving end, so that the receiving end determines a minimum resolution according to the corrected image;
  • the receiver is further configured to receive information that is sent by the receiving end and includes a minimum resolution
  • the processor is further configured to determine the first pixel point and the second image according to the minimum resolution Prime point.
  • the transmitter is further configured to send a signal calibration image to the receiving end;
  • the receiver is further configured to receive image identification information sent by the receiving end, where the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the image sensor in the receiving end;
  • the processor is further configured to generate the coded image according to the image identification information by using data to be transmitted.
  • the processor is further configured to use a multiple of an integer of a frame rate of the image sensor as a refresh frame rate;
  • the transmitter is further configured to send the first optical rotation and the second optical rotation to the receiving end according to the refresh frame rate.
  • the embodiment of the present invention further provides a receiving end, including:
  • a receiver configured to receive, by the receiving end, light emitted by the transmitting end, where the light includes a first optical rotation and a second optical rotation;
  • the processor is further configured to convert the collected first optical rotation and the second optical rotation into a coded image, where the coded image includes first coded data and second coded data.
  • the processor is further configured to convert the light into a preset polarization direction light by using a circular polarizer
  • the processor is further configured to collect the preset polarization direction light by using an image sensor to obtain a coded image.
  • the light emitted by the transmitting end includes light of three channels of R, G, and B, and the light of the three channels of R, G, and B respectively includes a pre-light.
  • the receiver is further configured to separately collect, by using an image sensor, preset polarization direction ray including three channels of R, G, and B, and respectively generate a first coded image, a second coded image, and a third coded image;
  • the receiver is further configured to acquire a color corrected image, and respectively correct the first encoded image, the second encoded image, and the third encoded image according to the color corrected image.
  • the first coded image, the The second encoded image and the third encoded image each include a positioning identifier
  • the processor is further configured to determine whether the positioning identifier is first encoded data
  • the processor is further configured to perform image inversion processing on the first encoded image, the second encoded image, and the third encoded image, respectively, when it is determined that the positioning identifier is not the first encoded data.
  • the receiver is further configured to receive light emitted from the transmitting end by using the photodetector;
  • the processor is further configured to acquire blinking state or intensity state information of the light, and convert the blinking state or intensity state information into corresponding received data.
  • the receiving end further includes a transmitter
  • the receiver is further configured to receive a corrected image sent by the sending end, where the corrected image includes a plurality of sharp sub-images;
  • the processor is further configured to identify the sub-image in the corrected image, and determine to identify a sub-image with the lowest definition in the corrected image;
  • the processor is further configured to determine a minimum resolution, where the minimum resolution is a resolution corresponding to the lowest-resolution sub-image in the sub-image;
  • the transmitter is further configured to send information including the minimum resolution to the sending end.
  • the receiving end further includes a transmitter
  • the receiver is further configured to receive a signal calibration image sent by the sending end;
  • the processor is further configured to generate image identification information for the signal calibration image, where the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the medium image sensor;
  • the transmitter is further configured to send the image identification information to the sending end.
  • the coded image includes a positioning identifier
  • the processor is further configured to determine whether the positioning identifier is second encoded data
  • the processor is further configured to perform image inversion processing on the encoded image when it is determined that the positioning identifier is not the second encoded data.
  • the transmitting end converts the data to be transmitted into an encoded image, and sends the first optical rotation and the second optical rotation including the encoded image to the receiving end.
  • the receiving end acquires the first optical rotation and the second optical rotation including the coded image sent by the transmitting end, and the first optical rotation and the second optical rotation
  • the optical rotation is converted into polarized light in a certain direction that can be acquired by the image sensor, and the image is collected according to the strength of the polarized light to obtain a coded image, and then the decoded image is decoded to achieve the purpose of data transmission.
  • the transmitting end when the communication between the transmitting end and the receiving end is performed, on the one hand, the transmitting end realizes the data transmission by generating the first optical rotation and the second optical rotation including the encoded image, so that the transmitting end can realize the daily lighting function.
  • the problem of displaying the coded image by controlling the intensity of the light generated by the liquid crystal pixel in the display screen is avoided, which causes the display screen to have a poor effect when the illumination function is realized; on the other hand, the first one is sent by the transmitting end.
  • the optical rotation and the second optical rotation are not directly recognized by the human eye, and the communication between the transmitting end and the receiving end can avoid interference with the normal work and learning of the user; in the third aspect, the receiving end needs to obtain the specific receiving device.
  • the data sent by the sending end so that the embodiment of the present invention also has the security of communication to some extent during communication; in the fourth aspect, in the process of communicating between the transmitting end and the receiving end, the embodiment of the present invention can also control
  • the light source realizes visible light communication, and the two do not interfere with each other, so that the two communication modes are simultaneously performed, In order to greatly improve the communication efficiency.
  • FIG. 1 is a schematic diagram of a transmitting end provided in an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a scenario provided in another embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a design manner of a display screen provided in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another design manner of a display screen provided in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a receiving end provided in an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a display screen provided in an embodiment of the present invention.
  • Figure 7 is a schematic diagram of a display screen provided in still another embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a color correction image provided in an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of combining three black and white encoded images into a color coded image according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a process of disassembling a color coded image provided in an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of combining three black and white encoded images into a color coded image according to another embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a process of disassembling a color coded image provided in still another embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a process of disassembling a color coded image provided in still another embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a black and white signal calibration image provided in an embodiment of the present invention.
  • 16 is a schematic flow chart of a communication method according to another embodiment of the present invention.
  • FIG 17 is a flow chart of step S120 of Figure 16;
  • Figure 18 is a flow chart of step S121 of Figure 17;
  • Figure 19 is a flow chart of step S122 of Figure 17;
  • Figure 20 is another flow chart of step S120 of Figure 16;
  • FIG. 21 is a flowchart of step S110 of Figure 16;
  • Figure 22 is a flow chart of step S1212 of Figure 18;
  • Figure 23 is a flow chart of step S124 of Figure 20;
  • FIG. 24 is a flowchart of a communication method provided in another embodiment of the present invention.
  • FIG. 25 is still another flowchart of step S120 in Figure 16;
  • 26 is a flow chart of a communication method provided in still another embodiment of the present invention.
  • Figure 27 is a flowchart of a communication method provided in still another embodiment of the present invention.
  • FIG 28 is still another flowchart of step S110 in Figure 16;
  • 29 is a flowchart of a communication method provided in still another embodiment of the present invention.
  • FIG 31 is a flowchart of step S220 of Figure 30;
  • FIG 32 is still another flowchart of step S220 in Figure 30;
  • Figure 34 is a flow chart showing a communication method provided in still another embodiment of the present invention.
  • 35 is a flow chart of a communication method provided in still another embodiment of the present invention.
  • FIG. 38 is a schematic diagram of a transmitting end according to another embodiment of the present invention.
  • FIG. 39 is a schematic diagram of a receiving end according to another embodiment of the present invention.
  • LEDs are widely used in lighting, signal indication and screen display scenes due to their high performance, small size and long life. LEDs also have good time response. Therefore, the human eye cannot recognize the light emitted by the LED with high-speed light and dark flicker, and the LED can be used as a signal transmitter of Visible Light Communication (VLC).
  • VLC Visible Light Communication
  • OCC optical camera communication
  • FIG. 1 is a schematic diagram of an OCC scenario provided in an embodiment of the present invention.
  • the transmitting end 100 includes a light source 110 and a display screen 120.
  • the transmitting end 100 further includes a control module and a driving module not shown in FIG. 1.
  • the light source 110 in the transmitting end 100 can be used for visible light communication.
  • the transmitting end 100 may further include a VLC module for controlling the light source 110 to generate light; wherein the blinking state and the intensity state of the light generated by the light source 110 correspond to data to be transmitted. Since the data generally required to be transmitted is binary data composed of "0" and "1", the VLC control module only needs to control the blinking state or the intensity state of the light generated by the light source 110 to correspond to the data to be transmitted.
  • the data can be transmitted and received by acquiring the light emitted by the light source 110, and specifically, the data can be transmitted and received.
  • the existing methods in the prior art are not described here.
  • the transmitting end 100 can also be used to implement the OCC function.
  • the control module converts the acquired data to be transmitted into a coded image.
  • the coded image in the embodiment of the present invention is described by taking a two-dimensional code image as an example. In other embodiments, it may also be a Coded images such as dimensional codes.
  • the coded image is a digital image consisting of "0" and "1".
  • the display screen 120 is located in front of the light source 110 and can receive light from the light source 110.
  • the driving module is used to drive the display screen 120 to display the encoded image generated by the control module.
  • the control module acquires the version of the two-dimensional code image, and generates a corresponding two-dimensional code image according to the version of the two-dimensional code image, and simultaneously sends the generated two-dimensional code image to the driving module according to a certain refresh frequency, and the driving module Then, the polarization direction or the rotation direction of the output light of each pixel in the display screen 120 is controlled according to the two-dimensional code image.
  • the light source 110 in the embodiment of the present invention may be an LED lamp.
  • the light generated by the light source 110 is polarized light having various directions.
  • the display screen 120 receives the light generated from the light source 110 and converts the light into a combination of the first optical rotation and the second optical rotation according to the encoded image, wherein the rotation directions of the first optical rotation and the second optical rotation different. Since the coded image is data composed of "0" and "1", the data in the coded image is referred to as the first coded data and the second coded data in the embodiment of the present invention. For example, "0" is used as the first encoded data, and "1" is taken as the second encoded data.
  • the driving module generates a first optical rotation by controlling pixel points on the display screen 110, a pixel for displaying the first encoded data, and a second optical rotation for the pixel for displaying the second encoded data. Since the human eye can not recognize the first optical rotation and the second optical rotation, the transmitting end 100 can provide normal lighting functions while transmitting data through the VLC and the OCC, respectively, without affecting the normal working and living of the user.
  • the transmitting end 100 can be disposed on the ceiling 300 of the room, and the transmitting end 100 can realize the normal illumination of the user, and can also implement OCC or VLC, or simultaneously. OCC and VLC. It should be noted that when the transmitting end 100 performs OCC and VLC at the same time, the OCC and the VLC do not affect each other, and the data can be completely and independently transmitted.
  • the receiving end 200 includes a circular polarizing plate 210, an image sensor 220, and a lens 230 disposed between the image sensor 220 and the circular polarizing plate 210.
  • the lens 230 is disposed in front of the image sensor 220, and the circular polarizing plate 210 is disposed in front of the lens 230.
  • the image sensor 220 collects light passing through the circular polarizing plate 210 and the lens 230.
  • the light source 110 can also be disposed on a wall perpendicular to the horizontal plane, etc., so that the user can obtain the transmitting end 100 through the receiving end 200, and can be set as needed.
  • FIG. 3 is a structural schematic diagram of a first design manner of the display screen 120.
  • the display screen 120 includes a linear polarizing plate 121, a liquid crystal pixel array 122, and a quarter wave plate 123.
  • the liquid crystal pixel array 122 is located between the linear polarizer 121 and the 1/4 wave plate 123.
  • the angle between the polarization direction of the linear polarizer 121 and the fast axis direction of the quarter wave plate 123 is 45. ° or 135°.
  • the angle between the polarization direction of the linear polarizing plate 121 and the fast axis direction of the quarter wave plate 123 is 45° or 135°
  • the receiving end 200 receives the optical rotation transmitted by the transmitting end 100.
  • the receiving end 200 only needs to face the transmitting end 100, and the receiving angle is not necessarily limited.
  • the receiving end 200 needs to be adjusted and transmitted.
  • the corresponding receiving angle of the terminal 100 can better receive the optical rotation sent by the transmitting end 100.
  • the light generated by the light source 110 includes light rays of respective polarization directions, and the linear polarizing plate 121 polarizes the light from the light source 110 such that the light passing through the linear polarizing plate 121 has only one polarization.
  • Direction of light For example, if the linear polarizer 121 is a horizontal linear polarizer, the light passing through the linear polarizer 121 has only horizontally polarized light.
  • the linear polarizing plate 121 in the embodiment of the present invention is described by taking a horizontal linear polarizing plate as an example.
  • the liquid crystal pixel array 122 receives the light passing through the linear polarizing plate 121, and the light enters the liquid crystal pixel array Column 122, the driving module drives the liquid crystal pixel array 122, converts the light in the liquid crystal pixel for displaying the first encoded data in the encoded image into the first polarization direction light, and uses the liquid crystal for displaying the second encoded data in the encoded image.
  • the light in the pixel is converted into light in the second polarization direction.
  • the first direction polarized light may be a horizontally polarized light
  • the second direction polarized light is a vertically polarized light, in order to distinguish the first direction polarized light from the second direction polarized light.
  • the linear polarizer 121 is a horizontal polarizer
  • the light reaching the liquid crystal pixel array 122 is a horizontally polarized light
  • the horizontally polarized light in the liquid crystal pixel used to display the first encoded data in the encoded image can be converted.
  • converting the horizontal polarization direction light in the liquid crystal pixel point of the second encoded data in the encoded image by 90° to the vertical polarization direction light.
  • the light reaching the quarter-wave plate 123 passing through the liquid crystal pixel array 122 includes the light of the horizontal polarization direction and the light of the vertical polarization direction.
  • the quarter-wave plate 123 converts the horizontally polarized light into a first optical rotation and the vertically polarized light into a second optical rotation.
  • the first optical rotation corresponds to the first encoded data in the encoded image
  • the second optical rotation corresponds to the second encoded data in the encoded image.
  • FIG. 4 is a schematic structural diagram of a second design manner of the display screen 120.
  • the linear polarizing plate 121 receives the light emitted from the source light source 110, and the linear polarizing plate 121 polarizes the light so that the light passing through the linear polarizing plate 121 includes only one light of a polarization direction.
  • the case where the linear polarizing plate 121 can only pass the horizontal polarizing direction light is a horizontal polarizing plate will be described as an example.
  • the quarter-wave plate 123 converts the light of the horizontal polarization direction into the light of one direction.
  • the first rotation is taken as an example for description. Since the linear polarizing plate 121 and the quarter wave plate 123 in FIG. 4 constitute the circular polarizing plate 124, the circular polarizing plate 124 converts the light from the source light source 110 into light including only one rotational direction, that is, the first optical rotation. Light.
  • the linear polarizing plate 121 receives the light emitted from the light source 110, and the linear polarizing plate 121 polarizes the light so that the light passing through the linear polarizing plate 121 includes only one light of a polarization direction.
  • the case where the linear polarizing plate 121 can only pass the horizontal polarizing direction light is a horizontal polarizing plate will be described as an example.
  • the 1/4 wave plate 123 converts the light in the horizontal polarization direction into the light in one direction.
  • the first light rotation is taken as an example for description. Since the linear polarizing plate 121 and the quarter-wave plate 123 constitute the circular polarizing plate 124 in FIG. 4, the circular polarizing plate 124 converts the light from the light source 110 into light including only one rotational direction, that is, the first optical rotating light.
  • the liquid crystal pixel array 122 receives the light including only the first optical rotation, and the light enters the liquid crystal pixel array 122, and the driving module drives the liquid crystal pixel array 122 to convert the light in the liquid crystal pixel for displaying the first encoded data in the encoded image into the first
  • An optical rotation converts light in a liquid crystal pixel for displaying the second encoded data in the encoded image into a second optical rotation.
  • the rotation directions of the first optical rotation and the second optical rotation are different in the embodiment of the present invention.
  • the first optical rotation in the liquid crystal pixel for displaying the first encoded data in the encoded image is not rotated.
  • the first optical rotation in the liquid crystal pixel for displaying the second encoded data in the encoded image is converted into the second optical rotation.
  • the liquid crystal pixel array 122 shows only four pixel points on the figure, and does not display all the pixel points in the liquid crystal pixel array 122.
  • the receiving end 200 includes a circular polarizing plate 210 and an image sensor 220.
  • the circular polarizing plate 210 is disposed in front of the image sensor 220, and the image sensor 220 collects light passing through the circular polarizing plate 210 and the lens 230. Realize the receipt of data.
  • the circular polarizing plate 210 is composed of a 1/4 wave plate 221 and a linear polarizing plate, and the 1/4 wave plate 221 converts light including the first optical rotation and the second optical rotation transmitted from the transmitting end 100 into a horizontal polarization direction and Light in the direction of vertical polarization.
  • the 1/4 wave plate 221 can convert the first optical rotation into the horizontal polarization direction light and convert the second rotation light into the vertical polarization direction light.
  • the linear polarizer 222 filters the light including the horizontal polarization direction and the vertical polarization direction such that the light passing through the linear polarizer 222 contains only one direction of polarized light.
  • the linear polarizing plate 222 is exemplified as a horizontal linear polarizing plate which can only pass light in the horizontal polarization direction.
  • the quarter wave plate 221 and the linear polarizing plate 222 form a circular polarization.
  • the receiving 200 when the transmitting end 100 emits light using a circular polarizing plate, the receiving 200 also receives light by using a circular polarizing plate.
  • the transmitting end 100 emits light by using an elliptically polarizing plate
  • the receiving end 200 also receives the light emitted by the transmitting end 100 by using an elliptically polarizing plate corresponding to the transmitting end 100, and receives an angle of 200 receiving light corresponding to the transmitting end 100.
  • the circular polarizing plate is not limited to the receiving angle of the receiving end 200. Therefore, for the convenience of the practical application, the embodiment of the present invention uses a circular polarizing plate as an example for the transmitting end 100 and the receiving end 200 as an example.
  • the receiving end 200 converts the received light including the first optical rotation and the second optical rotation into the light having only the horizontal polarization direction through the circular polarizing plate 210. That is, the circular polarizing plate 210 converts the first optical rotation into the first polarization direction light and prevents the second rotation light from passing, so that the image sensor 200 can collect the light having only the horizontal polarization direction. Since the image sensor 220 can detect the brightness of the light, that is, the intensity of the light, the image sensor 220 can generate a coded image, such as a black and white two-dimensional code image, by collecting the light.
  • a coded image such as a black and white two-dimensional code image
  • the receiving end 200 may be formed by adding a circular polarizing plate 210 to the lens of the terminal having the photographing function.
  • a circular polarizing plate 210 is added to the camera lens or the camera of the mobile phone to form the receiving end 200.
  • the display screen 120 in the transmitting end 100 may be a square, it may be a rectangle.
  • the display screen 120 is rectangular and the coded image to be transmitted is square, a part of the rectangular display screen 120 may be vacant to generate the coded image. Therefore, in this embodiment, the portion of the display 120 may be sent. Other data.
  • the length of the rectangular display screen 120 is set to a, and the width is b. If a>n ⁇ b, and the size of the encoded image displayed on the display screen 120. For b ⁇ b, it is displayed Screen 120 can simultaneously generate n coded images of the same size. In addition to being used to generate n equally sized encoded images on display screen 120, the remaining (a-n x b) x b rectangular sizes can be used to generate one or several new encoded images. Where n is a positive integer.
  • the display screen 120 when the encoded image is generated by the display screen 120, the display screen 120 can be used to generate a square encoded image, and a rectangular encoded image can be generated as needed.
  • the terminal 100 can simultaneously generate a plurality of encoded images by using the display screen 120 in a plurality of rows and columns. Specifically, it can be set according to the resolution of the display screen 120 and the size of the encoded image that needs to be generated.
  • the display screen 120 is taken as a rectangle, and a coded image with a resolution of p ⁇ q pixels is generated as an example. This is also the case when the display screen 120 is square. Where p and q are both positive integers.
  • the encoded image is transmitted by the display screen 120 in the embodiment of the present invention, since the human eye is invisible to the optical rotation, the optical rotation generated by the display screen 120 not only does not affect the normal working and life of the user, but also provides illumination for the user. The function. By simultaneously generating a plurality of encoded images through the display screen 120, the communication efficiency of the OCC can be greatly improved.
  • a plurality of coded images are simultaneously transmitted through the display screen 120 in the above embodiment.
  • the embodiment of the present invention provides three black and white encoded images to be transmitted into one color-coded image, so as to be displayed through the display.
  • An area of the screen 120 that can only produce one black and white encoded image can produce a color coded image that can be composed of three black and white coded images.
  • the display screen 120 of the embodiment of the present invention includes a liquid crystal pixel array 122, and each liquid crystal pixel point in the liquid crystal pixel array 122 includes three channels of R, G, and B, in conjunction with the above embodiments. Among them, each of the three channels R, G, and B can be individually controlled.
  • three black and white coded images a first coded image, a second coded image, and a third coded image, which are combined into one color coded image, and the color coded image is displayed on the display screen 120
  • the first encoded image is generated by controlling the light in the R channel in the liquid crystal pixel array 122
  • the second encoded image is generated by controlling the light in the G channel in the liquid crystal pixel array 122, by controlling the liquid crystal pixel array 122.
  • the light in the B channel produces a third encoded image.
  • the R channel for controlling the red component in the color coded image is generated to include horizontal polarization and vertical polarization.
  • the light is also true for the G channel and the B channel in the liquid crystal pixel array 122.
  • FIG. 3 and FIG. 4 are two different implementations of the display screen 120 in the above embodiment, for FIG.
  • the R channel in the liquid crystal pixel array 122 is color coded, There is a red component in the image, and the R channel for generating the red component in the color coded image is controlled to produce light including the first and second optical rotations, as is the case for the G and B channels in the liquid crystal pixel array 122.
  • the transmitting end 100 transmits a color coded image to the receiving end 200
  • the color in the light received by end 200 is not very pure.
  • the color correction image is sent to the receiving end 200 in advance by the transmitting end 100, so that the receiving end 200 correctly decodes the acquired color coding according to the color corrected image, and the color corrected image shown in FIG. 8 is also used to determine that The lowest sharpness when the image is recognized.
  • the color correction 8 may also be a black-and-white image for the transmitting end 100 to determine the lowest resolution that can be recognized when transmitting the encoded image in black and white. Among them, the different shades in Figure 8 represent the corresponding colors. In the color correction, the color correction can be performed by the existing color correction method, which will not be described here.
  • FIG. 9 is a schematic diagram of merging three black and white coded images into a color coded image according to an embodiment of the present invention.
  • the code pattern transmitted in parallel through the R, G, and B channels in the display screen 120 is a code of a white matrix black code.
  • the coding pattern of the black matrix black code is subjected to image inversion processing, that is, the coding pattern of the white matrix black code to be transmitted is converted into a coded image of the black matrix white code, and the ith frame sent to the R channel is sent.
  • the white color of the coding pattern is indicated by red
  • the white color of the i+1th frame coding pattern sent to the G channel is indicated by green
  • the white of the i+2 frame coding pattern sent to the B channel is represented by blue.
  • the black in the middle does not have to change. It can be understood that the order of the coding pattern frames sent to the R, G, and B channels is only an example, and the order may be changed according to actual needs.
  • FIG. 10 is a schematic diagram of a color-coded image de-merging process according to an embodiment of the present invention.
  • the receiving end 200 performs color separation on the received color-coded pattern according to the received color-corrected image to obtain a three-layer pattern of R, G, and B. .
  • the receiving end 200 converts the black in the obtained three-layer image into white, and the other colors are converted into a black pattern, thereby being restored to the encoding pattern of three white-black codes.
  • the three black and white encoded images are separately decoded to obtain the original information, thereby achieving data transmission and reception.
  • the receiving end 100 receives the color-coded image when the transmitting end 100 transmits the color-coded image to the receiving end.
  • End 200 can be color corrected by a location identification in a color coded image.
  • the coded image is a two-dimensional code as an example.
  • R, G, and B in this embodiment.
  • the red two-dimensional code in the three-way two-dimensional code leaves the positioning identifier in the lower left corner, and the positioning identifiers in the upper left and upper right corners are removed
  • the green two-dimensional code leaves the positioning identifier in the upper left corner
  • the positioning identifiers in the lower left and upper right corners are removed
  • the color QR code leaves the positioning mark in the upper right corner, and removes the positioning marks in the lower left and upper left corners.
  • the receiving end 200 when the receiving end 200 receives the color two-dimensional code image sent by the transmitting end 100, the color of the three positioning identifiers in the color two-dimensional code is a solid color, that is, the three positioning identifiers are red, blue, and green respectively. Therefore, the receiving end 200 can use the three positioning identifiers in the color two-dimensional code image as the color corrected image, and the receiving end 200 refers to the color calibration information in the three positioning identifiers in the received color two-dimensional code.
  • the color in the obtained color two-dimensional code is corrected, and the received coding patterns are decomposed (color separated), thereby obtaining three layers of R, G, and B patterns.
  • There are two kinds of processes for unmerge as shown in Fig. 12 and Fig. 13.
  • FIG. 12 The color separation of FIG. 12 is the same as the color separation method in the above embodiment, but since the two-dimensional code after the color separation is missing the positioning and positioning mark, it is necessary to convert the black portion of the image into white, and the other colors are converted into black. And fill it up Missing location identifier.
  • FIG. 13 firstly turns the locating flag containing the color correction information in the color two-dimensional code into white, and the subsequent processing manner is consistent with the above embodiment, and details are not described herein again.
  • the encoded image of the three separate white-black codes is restored by converting the black portion of the resulting three-layer image to white and the other colors to black. Finally, the three black and white two-dimensional code images are decoded to obtain the original information.
  • a communication method is provided, which may include the following steps. :
  • Step 101 The transmitting end sends a signal calibration image to the receiving end.
  • the transmitting end sends a signal calibration image through the liquid crystal pixel array in the display screen.
  • the signal calibration image may be the color correction as shown in FIG. 8 in the above embodiment.
  • Step 102 The receiving end receives the signal calibration image sent by the transmitting end, and determines the image identification information according to the signal calibration image.
  • Step 103 Send image identification information to the transmitting end.
  • the coded image is still a two-dimensional code image as an example.
  • the receiving end After receiving the signal calibration image sent by the transmitting end, the receiving end determines a two-dimensional code that can be correctly recognized, for example, a version of the two-dimensional code.
  • the image identification information may include: a resolution of the encoded image, version information of the encoded image, and a frame rate of the image sensor in the receiving end; in addition, the image identification information may further include other information, such as between the transmitting end and the receiving end, as needed. Distance information, attitude information at the receiving end (such as the orientation of the receiving end), and the like.
  • Step 104 The transmitting end generates a coded image according to the image identification information.
  • the transmitting end After receiving the image identification information sent by the receiving end, the transmitting end generates the two-dimensional code image according to the version, size and the like of the two-dimensional code in the image identification information, and adopts the frame rate of the image sensor in the receiving end.
  • the integer number of times is used as a refresh rate to dynamically transmit the already generated two-dimensional code image through the liquid crystal pixel array.
  • Step 105 The transmitting end sends an optical rotation containing the encoded image to the receiving end.
  • the encoded image is composed of the first encoded data and the second encoded data
  • the transmitting end can control the polarization direction or the rotating direction of the light in the pixel of the liquid crystal pixel array. Therefore, the transmitting end can generate the inclusion through the display screen.
  • the optical rotation of the first optical rotation and the second optical rotation, and the optical rotation is transmitted to the receiving end.
  • the optical rotation sent by the transmitting end does not affect the normal working and life of the user.
  • the transmitting end emits the optical rotation, not only can the communication be realized, but also the normal lighting function can be provided for the user, and no special illumination is needed.
  • the sender implements VLC and OCC functions at the same time, the sender can provide normal illumination functions for the user while performing VLC communication and OCC communication.
  • the receiving end After the receiving end receives the light containing the optical rotation generated by the transmitting end, if the receiving end correctly decodes the light transmitted by the transmitting end, the receiving end sends a successful receiving information to the transmitting end; otherwise, the receiving end sends the unsuccessfully received information to the transmitting end. .
  • Step 106 The receiving end sends the receiving status information to the sending end.
  • the transmitting end retransmits the optical rotation including the encoded image to the receiving end until the successful receiving information sent by the receiving end is obtained.
  • the transmitting end may pause to transmit the optical rotation including the encoded image to the receiving end.
  • the receiving end can recalculate the current two-dimensional code size and version information that can be correctly identified according to the signal calibration image (the version information includes version information and error correction level, etc.), and report the two-dimensional code size to the transmitting end machine. Version Information.
  • the transmitting end After receiving the two-dimensional code size and version information reported by the receiving end, the transmitting end encodes the data to be transmitted according to the new size and version information, and continuously monitors the feedback information reported by the receiving end. Therefore, the embodiment can dynamically adjust the coded image to be generated in real time according to the two-dimensional code size and version that the receiving end can recognize.
  • the transmitting end determines whether it is necessary to continue to send the optical rotation including the encoded image of the next frame to the receiving end as needed.
  • the transmitting end converts the data to be transmitted into an encoded image, and sends the first optical rotation and the second optical rotation including the encoded image to the receiving end.
  • Receiving, by the receiving end, the first optical rotation and the second optical rotation, which are sent by the transmitting end, and converting the first optical rotation and the second optical rotation into polarized light of a certain direction that can be collected by the image sensor, according to the polarized light The image is acquired by the strong and weak, and the encoded image is obtained, and then the decoding of the encoded image is achieved to achieve the purpose of data transmission.
  • the transmitting end when the communication between the transmitting end and the receiving end is implemented, on the one hand, the transmitting end performs OCC by generating the first optical rotation and the second optical rotation including the encoded image, so that the transmitting end can implement the daily lighting function.
  • the problem of displaying the coded image by controlling the intensity of the light generated by the liquid crystal pixel in the display screen is avoided in the prior art, which causes the display screen to have a poor effect when the illumination function is realized; on the other hand, the first optical rotation is emitted by the transmitting end. And the second optical rotation is not directly recognized by the human eye.
  • the receiving end needs to obtain and transmit through a specific receiving device.
  • the data sent by the terminal so that the embodiment of the present invention also has the security of communication to some extent during communication; in the fourth aspect, in the process of performing OCC between the transmitting end and the receiving end, the embodiment of the present invention can also control
  • the light source realizes VLC, and the two do not interfere with each other, so that the two communication modes are simultaneously performed, and the communication can be greatly improved. Rate.
  • a communication method is provided, and the method may include the following steps:
  • step S110 the transmitting end acquires the encoded image.
  • the encoded image includes first encoded data and second encoded data.
  • step S120 the transmitting end generates a first optical rotation and a second optical rotation including the encoded image through the display screen.
  • first rotation is generated by the first pixel for displaying the first encoded data
  • second rotation is generated by the second pixel for displaying the second encoded data
  • the transmitting end needs to send the number of data to be sent, and can convert the data to be transmitted into a coded image, such as a two-dimensional code image.
  • a coded image such as a two-dimensional code image.
  • an encoder in the prior art can be used to generate a black and white two-dimensional code image from the data to be transmitted. Since the black and white QR code image includes both white and black data, in the digital image, the two-dimensional code image is a matrix composed of 0 and 1, which can be represented by 0 and 1, for example, in the encoded image The data of 0 is converted into the first optical rotation, and the data of 1 in the encoded image is converted into the second optical rotation.
  • the first optical rotation may be left-handed light
  • the second optical rotation may be right-handed light
  • the first optical rotation and the second optical rotation may be rotated in different directions.
  • the transmitting end converts the data to be transmitted into an encoded image, and sends the first optical rotation and the second optical rotation including the encoded image to the receiving end.
  • Receiving, by the receiving end, the first optical rotation and the second optical rotation, which are sent by the transmitting end, and converting the first optical rotation and the second optical rotation into polarized light of a certain direction that can be collected by the image sensor, according to the polarized light The image is acquired by the strong and weak, and the encoded image is obtained, and then the decoding of the encoded image is achieved to achieve the purpose of data transmission.
  • step S120 may further include:
  • step S121 the transmitting end generates the first polarization direction light at the first pixel point through the display screen, and generates the second polarization direction light beam at the second pixel point.
  • step S122 the transmitting end converts the first polarization direction light into a first rotation and the second polarization direction light into a second rotation.
  • the display screen includes: a linear polarizing plate and a liquid crystal pixel array, the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array; S121 can also include:
  • step S1211 the transmitting end polarizes the light from the light source through the linear polarizing plate to obtain polarized light vibrating in a predetermined direction.
  • the polarized light vibrating in the predetermined direction is related to the set angle of the linear polarizer.
  • the linear polarizer is horizontally disposed, the light passing through the linear polarizer has only horizontally polarized light.
  • step S1212 the transmitting end drives the liquid crystal pixel array, converts the polarized light into the first polarized direction light through the first liquid crystal pixel array, and converts the polarized light into the second polarized side through the second liquid crystal pixel array. To the light.
  • the liquid crystal pixel array controls the polarization of the light by the control of the electrostatic field.
  • the display screen may include a 1/4 wave plate, and step S122 may specifically be:
  • step S1221 the transmitting end passes the first polarization direction light and the second polarization direction light through the 1/4 wave plate, converts the first polarization direction light into the first rotation, and converts the second polarization direction light into the second rotation.
  • the angle between the polarization direction of the linear polarizer and the fast axis direction of the quarter wave plate is 45 degrees or 135 degrees.
  • the display The screen includes a circular polarizing plate and a liquid crystal pixel array, and the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array.
  • step S120 may further include the following steps:
  • step S123 the transmitting end converts the light from the light source into an optical rotation in a predetermined direction through the circular polarizing plate.
  • step S124 the transmitting end drives the liquid crystal pixel array, converts the optical rotation in the preset direction into the first optical rotation through the first liquid crystal pixel array, and converts the optical rotation in the preset direction into the second optical rotation through the second liquid crystal pixel array.
  • first optical rotation and the second optical rotation have different rotation directions.
  • FIG. 4 For the embodiment, reference may be made to the corresponding embodiment of FIG. 4 and FIG. 4, which is different from the embodiment corresponding to FIG. 3, and is another implementation manner of the first optical rotation and the second optical rotation.
  • step S110 may further include:
  • step S111 the transmitting end acquires the first encoded image, the second encoded image, and the third encoded image.
  • the three coded images to be transmitted that is, the first coded image, the second coded image, and the third coded image, are all black and white two-dimensional code images.
  • step S112 the transmitting end converts the first encoded image into a red-black encoded image.
  • red indicates the first encoded data in the first encoded image
  • black indicates the second encoded data in the first encoded image
  • step S113 the transmitting end converts the second encoded image into a green-black encoded image.
  • green indicates the first encoded data in the second encoded image
  • black indicates the second encoded data in the second encoded image
  • step S114 the transmitting end converts the third encoded image into a blue-black encoded image.
  • blue indicates the first encoded data in the third encoded image
  • black indicates the second encoded data in the third encoded image
  • the display screen 120 of the embodiment of the present invention includes a liquid crystal pixel array 122, and each liquid crystal pixel point in the liquid crystal pixel array 122 includes three channels of R, G, and B, in conjunction with the above embodiments. Among them, each of the three channels R, G, and B can be individually controlled.
  • each liquid crystal pixel in the liquid crystal pixel array of the display screen includes three channels of R, G, and B; as shown in FIG. 22, step S1212 may further include:
  • step S12121 the transmitting end converts the polarized light into the first polarized direction ray by the R channel in the liquid crystal pixel array for displaying the first encoded data in the red-black encoded image, and is used to display the red-black encoded image.
  • the R channel in the liquid crystal pixel array of the two encoded data converts the polarized light into the second polarized direction light.
  • step S12122 the transmitting end converts the polarized light into the first polarized direction ray by using the G channel in the liquid crystal pixel array for displaying the first encoded data in the green-black encoded image, and is used to display the green-black encoded image.
  • the G channel in the liquid crystal pixel array of the two encoded data converts the polarized light into the second polarized direction light.
  • step S12123 the transmitting end converts the polarized light into the first polarized direction light through the B channel in the liquid crystal pixel array for displaying the first encoded data in the blue-black encoded image, and is used to display the blue-black encoded image.
  • the B channel in the liquid crystal pixel array of the two encoded data converts the polarized light into the second polarized direction light.
  • the three to-be-coded images respectively include three positioning identifiers, and the three positioning identifiers are a first positioning identifier, a second positioning identifier, and a third positioning identifier, respectively.
  • the red-black encoded image contains only the first positioning identifier
  • the green-black encoded image contains only the second positioning identifier
  • the blue-black encoded image contains only the third positioning identifier
  • each liquid crystal pixel in the liquid crystal pixel array of the display screen includes three channels of R, G, and B.
  • step S124 may further include:
  • step S1241 the transmitting end converts the optical rotation in the preset direction into the first optical rotation through the R channel in the liquid crystal pixel array for displaying the first encoded data in the red-black encoded image, and is used to display the red-black encoded image.
  • the R channel in the liquid crystal pixel array of the second encoded data converts the optical rotation in the preset direction into the second optical rotation.
  • step S1242 the transmitting end passes the liquid for displaying the first encoded data in the green-black encoded image.
  • a G channel in the pixel array converting the optical rotation in a preset direction into a first optical rotation, and rotating the optical path in the preset direction by the G channel in the liquid crystal pixel array for displaying the second encoded data in the green-black encoded image Convert to the second rotation.
  • step S1243 the transmitting end converts the optical rotation in the preset direction into the first optical rotation through the B channel in the liquid crystal pixel array for displaying the first encoded data in the blue-black encoded image, and is used to display the blue-black encoded image.
  • the B channel in the liquid crystal pixel array of the second encoded data converts the optical rotation in the preset direction into the second optical rotation.
  • the three coded images to be sent may be respectively sent through three channels of R, G, and B in the liquid crystal pixel array, that is, by controlling three channels of R, G, and B respectively.
  • the light is transmitted simultaneously with the three encoded images, which can greatly improve the communication efficiency of the OCC.
  • the transmitting end may further include a visible light communication VLC module.
  • the method may further include the following steps:
  • step S130 the VLC module acquires data to be transmitted.
  • step S140 the VLC module controls the light generated by the light source, and the blinking state and the intensity state of the light generated by the light source correspond to the data to be transmitted.
  • the embodiment of the present invention can also implement VLC while performing OCC. It should be noted that when the transmitting end 100 performs OCC and VLC at the same time, OCC and VLC do not affect each other, and data transmission can be completely independent.
  • step S120 may further include:
  • step S125 the transmitting end acquires light generated from the light source through the display screen.
  • step S126 the transmitting end converts the light received by the first pixel to the first rotation, and converts the light received by the second pixel into the second rotation.
  • the light source may be provided as a part of the transmitting end, and may be disposed independently of the transmitting end, and the embodiment of the present invention is not limited thereto.
  • the first optical rotation is generated by the first pixel point for displaying the first encoded data
  • the second optical rotation is the second pixel of the display screen for displaying the second encoded data. produce.
  • the method may further include:
  • step S150 the transmitting end acquires the length a and the width b of the display screen.
  • step S160 the transmitting end simultaneously displays n sizes b ⁇ b on the display screen. Encode the image.
  • n is a positive integer and a and b are positive numbers.
  • the embodiment of the present invention can reasonably utilize the size of the display screen to generate the number of encoded images according to the size of the display screen. By using multiple encoded images simultaneously on one display, the utilization efficiency of the display can be improved.
  • the method may further include:
  • step S170 the transmitting end transmits the corrected image to the receiving end to cause the receiving end to determine the minimum resolution according to the corrected image.
  • step S180 the information sent by the receiving end of the transmitting end includes the minimum resolution
  • step S190 the transmitting end determines the first pixel point and the second pixel point according to the minimum resolution.
  • the camera and the terminal with the camera function can be appropriately set, for example, a circular polarizing plate is set on the lens of the camera, and can be set as the receiving end.
  • the transmitting end can obtain the information including the minimum resolution sent by the receiving end, in order to enable the receiving end to correctly identify the transmitted encoded image and improve the communication efficiency. By reasonably generating the encoded image, the encoded image of the corresponding resolution generated by the display screen can be correctly recognized by the receiving end.
  • step S110 may further include:
  • step S115 the transmitting end transmits a signal calibration image to the receiving end.
  • step S116 the transmitting end receives the image identification information transmitted by the receiving end.
  • the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the image sensor in the receiving end.
  • step S117 the transmitting end generates the encoded image according to the image identification information.
  • the transmitting end needs to generate the corresponding encoded image according to the receiving end.
  • the method may further include:
  • step S191 the transmitting end uses the integer value of the frame rate of the image sensor as the refresh frame rate.
  • step S192 the transmitting end transmits the first optical rotation and the second optical rotation to the receiving end according to the refresh frame rate.
  • the transmitting end After the transmitting end receives the image identification information sent by the receiving end, the transmitting end follows the two-dimensional image identification information.
  • the version, size, and the like of the code generate a two-dimensional code image from the data to be transmitted, and dynamically transmit the generated two-dimensional code image through the liquid crystal pixel array with the integer rate of the frame rate of the image sensor in the receiving end as a refresh rate.
  • a communication method is provided. As shown in FIG. 30, the method may include the following steps:
  • step S210 the receiving end collects light emitted by the transmitting end, and the light includes a first optical rotation and a second optical rotation.
  • step S220 the receiving end converts the acquired first optical rotation and second optical rotation into a coded image, where the coded image includes first coded data and second coded data.
  • the receiving end Since the light transmitted by the transmitting end includes the encoded image, the receiving end obtains the corresponding encoded image by receiving and converting the light including the first optical rotation and the second optical rotation, thereby implementing OCC.
  • the encoded image is decoded by the prior art, and the data transmitted by the transmitting end can be obtained.
  • step S220 further Can include:
  • step S221 the receiving end converts the light into a predetermined polarization direction light through a circular polarizing plate.
  • step S222 the receiving end collects the preset polarization direction light through the image sensor to obtain a coded image.
  • the receiving end converts the received light containing the first optical rotation and the second optical rotation to the transmitted light through the circular polarizing plate into Only the light in the horizontal polarization direction. That is, the circular polarizing plate converts the first optical rotation into the first polarization direction light and prevents the second optical rotation from passing, so that the image sensor can collect the light having only the horizontal polarization direction. Since the image sensor can detect the brightness of the light, that is, the intensity of the light, the image sensor can generate a coded image, such as a black and white two-dimensional code image, by collecting the light.
  • the light emitted by the transmitting end includes three channels of R, G, and B, and three channels of R, G, and B.
  • the light rays respectively contain light of a predetermined polarization direction.
  • step S220 may further include:
  • step S223 the receiving end separately collects preset polarization direction ray including three channels R, G, and B through the image sensor, and respectively generates a first encoded image, a second encoded image, and a third encoded image.
  • step S224 the receiving end acquires the color corrected image, and respectively corrects the first encoded image, the second encoded image, and the third encoded image according to the color corrected image.
  • the receiving end needs to perform color correction on the obtained encoded image in order to obtain the correct encoded image.
  • the correction of the image color can be implemented by the prior art, and details are not described herein again.
  • the first encoded image, the second encoded image, and the third encoded image each include a positioning identifier, and the method may further include the following step:
  • step S230 the receiving end determines whether the positioning identifier is the first encoded data.
  • step S240 when the receiving end determines that the positioning identifier is not the first encoded data, the receiving end performs image inversion processing on the first encoded image, the second encoded image, and the third encoded image, respectively.
  • the first coded data and the second coded data in this embodiment may be black and white, respectively.
  • the image is reversed, that is, white turns black and black turns white.
  • the method may further include:
  • step S250 the receiving end receives the light emitted from the transmitting end through the photodetector.
  • step S260 the receiving end acquires the blinking state or the intensity state information of the light, and converts the blinking state or the intensity state information into corresponding receiving data.
  • the photodetector when the VLC communication is implemented at the same time, the photodetector can be set at the receiving end to receive the data sent by the sending end through the VLC, which can be implemented by using the prior art, and is not described herein.
  • the method may further include:
  • step S271 the receiving end receives the corrected image transmitted by the transmitting end, and the corrected image includes a plurality of sharpness sub-images.
  • step S272 the receiving end recognizes the sub-image in the corrected image, and determines that the sub-image having the lowest definition in the corrected image is recognized.
  • step S273 the receiving end determines the minimum resolution, which is the resolution corresponding to the sub-image with the lowest definition in the sub-image.
  • step S274 the receiving end transmits information including the minimum resolution to the transmitting end.
  • the color correction image shown in FIG. 8 may also be a black-and-white image for the transmitting end 100 to determine the lowest resolution that can be recognized when transmitting the encoded image in black and white.
  • the method may further include:
  • step S281 the receiving end receives the signal calibration image transmitted by the transmitting end.
  • step S282 the receiving end generates image identification information for the signal calibration image.
  • the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the image sensor in the receiving end.
  • step S283 the receiving end transmits image identification information to the transmitting end.
  • the signal is calibrated to the transmitting end by the receiving end, so that the transmitting end can send an image that can be correctly recognized by the receiving end.
  • the encoded image includes a positioning identifier, as shown in FIG. 37, the method may further include:
  • step S291 the receiving end determines whether the positioning identifier is the second encoded data.
  • step S292 when the receiving end determines that the positioning identifier is not the second encoded data, the receiving end performs image inversion processing.
  • the receiving end 200 when the receiving end 200 receives the color two-dimensional code image sent by the transmitting end 100, the color of the three positioning identifiers in the color two-dimensional code is a solid color, that is, the three positioning identifiers are respectively red, Blue and green, therefore, the receiving end 200 can use three positioning marks in the color two-dimensional code image as the color corrected image, and the receiving end 200 refers to the color in the three positioning marks in the received color two-dimensional code.
  • the information corrects the color in the received color two-dimensional code, and decomposes (colors the separated) the encoded pattern, thereby obtaining a three-layer pattern of R, G, and B.
  • FIG. 13 firstly turns the locating flag containing the color correction information in the color two-dimensional code into white, and the subsequent processing manner is consistent with the above embodiment, and details are not described herein again.
  • the encoded image of the three separate white-black codes is restored by converting the black portion of the resulting three-layer image to white and the other colors to black. Finally, the three black and white two-dimensional code images are decoded to obtain the original information.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various types of media that can store program codes, such as a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • a communication device which may include a transmitting end and a receiving end in the following embodiments, where As shown in FIG. 38, an embodiment of the present invention provides a transmitting end, which can perform the foregoing FIG. 16 to FIG.
  • the communication method shown in FIG. 29, specifically, the transmitting end may include: a processor 11, a transmitter 12, and a receiver 13, wherein
  • the processor 11 is configured to acquire a coded image, where the coded image includes first coded data and second coded data;
  • a transmitter 12 configured to generate, by using a display screen, first and second optical rotations including the encoded image
  • first optical rotation is generated by the first display point for displaying the first encoded data
  • second optical rotation is by the display screen for displaying the second encoded data
  • the second pixel is generated.
  • the processor 11 is further configured to generate a first polarization direction light at the first pixel point through a display screen, and generate a second polarization direction light beam at the second pixel point;
  • the transmitter 12 is further configured to convert the first polarization direction light into the first rotation and convert the second polarization direction light into the second rotation.
  • the display screen includes: a linear polarizing plate and a liquid crystal pixel array, wherein the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array;
  • the processor 11 is further configured to polarize light from the light source through the linear polarizing plate to obtain polarized light vibrating in a predetermined direction;
  • the processor 11 is further configured to drive the liquid crystal pixel array, convert the polarized light into a first polarization direction light through the first liquid crystal pixel array, and use the second liquid crystal pixel array to polarize the light. Converted to light in the second polarization direction.
  • the display screen includes a 1/4 wave plate
  • the transmitter 12 is further configured to pass the first polarization direction light and the second polarization direction light into the 1/4 wave plate, and convert the first polarization direction light into a first rotation light, Converting the second polarization direction light into a second rotation;
  • the angle between the polarization direction of the linear polarizer and the fast axis direction of the quarter wave plate is 45 degrees or 135 degrees.
  • the display screen includes a circular polarizing plate and a liquid crystal pixel array
  • the liquid crystal pixel array includes a first liquid crystal pixel array and a second liquid crystal pixel array
  • the transmitter 12 is further configured to convert light from the light source into an optical rotation in a preset direction by using the circular polarizing plate;
  • the transmitter 12 is further configured to drive the liquid crystal pixel array, and the optical rotation in the preset direction is converted into a first optical rotation by the first liquid crystal pixel array, and the second liquid crystal pixel array is used to The optical rotation in the preset direction is converted into the second optical rotation;
  • first optical rotation and the second optical rotation have different rotation directions.
  • the processor 11 is further configured to acquire three to-be-transmitted coded images, where the three to-be-transmitted coded images are black and white two-dimensional code images, and the three to-be-transmitted coded images include a first coded image, a second encoded image and a third encoded image;
  • the processor 11 is further configured to convert the first encoded image into a red-black encoded image, wherein the red color represents first encoded data in the first encoded image, and the black represents the first encoded image Encoding the second encoded data in the image;
  • the processor 11 is further configured to convert the second encoded image into a green-black encoded image, wherein the green color indicates first encoded data in the second encoded image, and the black indicates the second encoded image Encoding the second encoded data in the image;
  • the processor 11 is further configured to convert the third encoded image into a blue-black encoded image, wherein the blue color indicates first encoded data in the third encoded image, and the black indicates the first The second encoded data in the three encoded image.
  • each liquid crystal pixel in the liquid crystal pixel array includes three channels of R, G, and B;
  • the processor 11 is further configured to convert the polarized light into the first polarized direction light by using an R channel in a liquid crystal pixel array for displaying first encoded data in the red-black encoded image, by using And displaying an R channel in the liquid crystal pixel array of the second encoded data in the red-black encoded image, converting the polarized light into the second polarized direction light;
  • the processor 11 is further configured to convert the polarized light into the first polarization direction light by using a G channel in a liquid crystal pixel array for displaying first encoded data in the green-black encoded image, by using And displaying a G channel in the liquid crystal pixel array of the second encoded data in the green-black encoded image, converting the polarized light into the second polarized direction light;
  • the processor 11 is further configured to convert the polarized light into the first polarization direction light by using a B channel in a liquid crystal pixel array for displaying first encoded data in the blue-black encoded image, by using And displaying the B channel in the liquid crystal pixel array of the second encoded data in the blue-black coded image, and converting the polarized light into the second polarized direction light.
  • each liquid crystal pixel in the liquid crystal pixel array includes three channels of R, G, and B;
  • the transmitter 12 is further configured to convert the optical rotation in the preset direction into the first optical rotation by using an R channel in the liquid crystal pixel array for displaying the first encoded data in the red-black encoded image. Converting the optical rotation in the preset direction to the second optical rotation by an R channel in the liquid crystal pixel array for displaying the second encoded data in the red-black encoded image;
  • the transmitter 12 is further configured to convert the optical rotation in the preset direction into the first optical rotation by using a G channel in the liquid crystal pixel array for displaying the first encoded data in the green-black encoded image. Converting the optical rotation in the preset direction to the second optical rotation by a G channel in the liquid crystal pixel array for displaying the second encoded data in the green-black encoded image;
  • the transmitter 12 is further configured to convert the optical rotation in the preset direction into the first optical rotation by using a B channel in the liquid crystal pixel array for displaying the first encoded data in the blue-black encoded image.
  • the optical rotation in the predetermined direction is converted into the second optical rotation by a B channel in the liquid crystal pixel array for displaying the second encoded data in the blue-black encoded image.
  • the three to-be-transmitted coded images respectively include three positioning identifiers, where the three positioning identifiers are a first positioning identifier, a second positioning identifier, and Third positioning identifier;
  • the red-black encoded image includes only the first positioning identifier
  • the green-black encoded image includes only the second positioning identifier
  • the blue-black encoded image includes only the third positioning identifier
  • the present invention includes a visible light communication VLC module, and the sending end further includes:
  • the processor 11 is further configured to acquire data to be sent by using the VLC module;
  • the processor 11 is further configured to control, by the VLC module, light generated by the light source, where a blinking state and an intensity state of the light generated by the light source correspond to the to-be-sent data.
  • the sending end further includes: a receiver 13;
  • the receiver 13 is configured to obtain light generated by a light source through the display screen
  • the transmitter 12 is further configured to convert the light received by the first pixel into a first optical rotation, and convert the light received by the second pixel into a second optical rotation.
  • the receiver 13 is further configured to acquire a length a and a width b of the display screen
  • the processor 11 is further configured to simultaneously display n coded images of size b ⁇ b on the display screen, where n is a positive integer, and a and b are positive number.
  • the transmitter 12 is further configured to send a corrected image to the receiving end, so that the receiving end determines a minimum resolution according to the corrected image;
  • the receiver 13 is further configured to receive information that is sent by the receiving end and includes a minimum resolution.
  • the processor 11 is further configured to determine the first pixel point and the second pixel point according to the minimum resolution.
  • the transmitter 12 is further configured to send a signal calibration image to the receiving end;
  • the receiver 13 is further configured to receive image identification information sent by the receiving end, where the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the image sensor in the receiving end;
  • the processor 11 is further configured to generate the coded image according to the image identification information by using data to be transmitted.
  • the processor 11 is further configured to use a multiple of an integer of a frame rate of the image sensor as a refresh frame rate;
  • the transmitter 12 is further configured to send the first optical rotation and the second optical rotation to the receiving end according to the refresh frame rate.
  • a receiving end is further provided, and the receiving end can execute FIG. 30 in the foregoing embodiment.
  • the method of any of the methods of FIG. 37, specifically, the transmitting end may include: a receiver 21, a processor 22, and a transmitter 23, where
  • the receiver 21 is configured to receive, by the receiving end, light emitted by the transmitting end, where the light includes a first optical rotation and a second optical rotation;
  • the processor 22 is further configured to convert the collected first optical rotation and the second optical rotation into a coded image, where the coded image includes first coded data and second coded data.
  • the processor 22 is further configured to convert the light into a preset polarization direction light by using a circular polarizer;
  • the processor 22 is further configured to collect the preset polarization direction light by using an image sensor to obtain a coded image.
  • the light packet sent by the sending end The light rays of the three channels R, G, and B respectively include light of a predetermined polarization direction.
  • the receiver 21 is further configured to separately collect, by using an image sensor, preset polarization direction ray including three channels R, G, and B, and respectively generate a first coded image, a second coded image, and a third coded image;
  • the receiver 21 is further configured to acquire a color corrected image, and respectively correct the first encoded image, the second encoded image, and the third encoded image according to the color corrected image.
  • the first encoded image, the second encoded image, and the third encoded image each include a positioning identifier
  • the processor 22 is further configured to determine whether the positioning identifier is first encoded data.
  • the processor 22 is further configured to perform image inverse color processing on the first encoded image, the second encoded image, and the third encoded image, respectively, when it is determined that the positioning identifier is not the first encoded data. .
  • the receiver 21 is further configured to receive light emitted from the transmitting end by using the photodetector;
  • the processor 22 is further configured to acquire blinking state or intensity state information of the light, and convert the blinking state or the intensity state information into corresponding received data.
  • the receiving end further includes a transmitter 23;
  • the receiver 21 is further configured to receive a corrected image sent by the sending end, where the corrected image includes a plurality of sharp sub-images;
  • the processor 22 is further configured to identify the sub-image in the corrected image, and determine to identify a sub-image with the lowest definition in the corrected image;
  • the processor 22 is further configured to determine a minimum resolution, where the minimum resolution is a resolution corresponding to the lowest-resolution sub-image in the sub-image;
  • the transmitter 23 is further configured to send information including the minimum resolution to the sending end.
  • the receiving end further includes a transmitter 23;
  • the receiver 21 is further configured to receive a signal calibration image sent by the sending end;
  • the processor 22 is further configured to generate image identification information for the signal calibration image, where the image identification information includes: a resolution of the encoded image, version information of the encoded image, and a frame rate of the medium image sensor;
  • the transmitter 23 is further configured to send the image identification information to the sending end.
  • the coded image includes a positioning identifier
  • the processor 22 is further configured to determine whether the positioning identifier is second encoded data.
  • the processor 22 is further configured to perform image inversion processing on the encoded image when it is determined that the positioning identifier is not the second encoded data.
  • the present invention is applicable to a wide variety of general purpose or special purpose computing system environments or configurations.
  • the invention may be described in the general context of computer-executable instructions executed by a computer, such as a program module.
  • program modules include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types.
  • the invention may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are connected through a communication network.
  • program modules can be located in both local and remote computer storage media including storage devices.

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  • Physics & Mathematics (AREA)
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  • Engineering & Computer Science (AREA)
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  • Optical Communication System (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de communication. Un terminal de transmission convertit des données devant être transmises en une image codée, et transmet une première lumière tournée et une seconde lumière tournée comprenant l'image codée à un terminal de réception. Via l'acquisition de la première lumière tournée et de la seconde lumière tournée comprenant l'image codée transmise par le terminal de transmission, et via la conversion de la première lumière tournée et de la seconde lumière tournée en une lumière polarisée d'une direction spécifique qui peut être collectée par un capteur d'image, le terminal de réception peut acquérir une image d'après l'intensité de la lumière polarisée de sorte à obtenir l'image codée et à la décoder, atteignant ainsi l'objectif de transmission de données.
PCT/CN2017/071604 2017-01-18 2017-01-18 Procédé et dispositif de communication WO2018132984A1 (fr)

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WO2010055774A1 (fr) * 2008-11-17 2010-05-20 日本電気株式会社 Système de communication et récepteur
DE102014000655A1 (de) * 2014-01-17 2015-07-23 Holger Köhler Verfahren und Anordnung zur Informationsübertragung mittels linear polarisierter elektromagnetischer Wellen
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CN103293757A (zh) * 2013-05-30 2013-09-11 京东方科技集团股份有限公司 显示装置及显示系统
CN104253646A (zh) * 2013-06-26 2014-12-31 中兴通讯股份有限公司 一种可见光通信mimo系统及其实现数据收发的方法

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