CN109104243B - Pixel communication method, information sending terminal and information receiving terminal - Google Patents
Pixel communication method, information sending terminal and information receiving terminal Download PDFInfo
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- 230000006854 communication Effects 0.000 title claims abstract description 33
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- 238000004590 computer program Methods 0.000 claims description 10
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- H—ELECTRICITY
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The embodiment of the invention provides a pixel communication method, which comprises the following steps: acquiring information to be transmitted, coding the information to be transmitted and encapsulating the information to be transmitted into at least one data frame; converting the data frame into a plurality of pieces of frame image information consisting of pixel points, constructing video information through the frame image information, and sending the video information to a receiving end in a visible light form; the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera. According to the method provided by the invention, the information to be sent is converted into video information and projected on the screen, the information is communicated in a visible light wave band, the kinds of transmittable information are rich, the limitation and influence of the internet signal coverage environment are avoided, the problem of frequency spectrum resource exhaustion of mobile communication can be relieved, and meanwhile, the method can be applied to an electromagnetic sensitive environment based on the highly directional characteristic of the short wave spectrum of visible light.
Description
Technical Field
The embodiment of the invention relates to the technical field of wireless optical communication, in particular to a pixel communication method, an information sending terminal and an information receiving terminal.
Background
Due to the increasing use of mobile digital terminals, especially the increasing demand of users for video services, wireless spectrum resources are becoming more and more scarce, and the introduction of visible light communication is a huge expansion of communication spectrum. The visible light has a huge bandwidth of 380-780nm (equivalent to 405THz), so that the urgency that the wireless spectrum resource is about to be exhausted can be relieved. The visible light communication technology is a communication method of transmitting an optical signal using light in a visible light band as an information carrier and using air as a medium without using a transmission medium such as an optical fiber or a wired channel. Meanwhile, the visible light communication technology utilizes the characteristic that the LED lamp can be modulated at a high speed, so that illumination and internet communication are realized, and intelligent control on terminals such as household appliances and safety protection equipment can be realized. In addition, visible light communication has no electromagnetic pollution, so the visible light communication can be used as an effective supplement of the existing wireless communication and has wide application scenes
In the prior art, more specific application scenes with higher feasibility have been proposed in the aspects of indoor positioning, short-distance high-speed transmission, secret communication and the like in wireless visible light communication, but the scenes basically depend on an LED as a transmitting end and a PIN tube as a receiving end, so that people are difficult to live. The popularization and the promotion have great resistance, and can only be applied to certain special fields.
Disclosure of Invention
The embodiment of the invention provides a pixel communication method, an information sending terminal and an information receiving terminal, which are used for solving the problems that in the prior art, visible light communication depends on an LED as a transmitting end and a PIN tube as a receiving end, can only be applied to certain special fields and is difficult to popularize and generalize.
In a first aspect, an embodiment of the present invention provides a pixel communication method, including:
acquiring information to be transmitted, coding the information to be transmitted and encapsulating the information to be transmitted into at least one data frame;
and converting the data frame into a plurality of pieces of frame image information consisting of pixel points, constructing video information through the frame image information, and sending the video information to a receiving end in a visible light form.
The video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
Wherein, the step of encoding and encapsulating the information to be transmitted into at least one data frame specifically comprises: coding the information to be transmitted to generate bit stream information; inserting frame head information and frame tail information into the bit information to obtain the data frame; wherein the frame header information at least includes a synchronization bit and a data length bit.
Wherein, the step of obtaining the information to be sent further comprises: and splitting the original information to be sent according to the length of the data bits in the data frame to obtain a plurality of pieces of information to be sent.
In a second aspect, an embodiment of the present invention further provides a pixel communication method, including:
receiving video information, intercepting frame image information in the video information, and performing frame analysis on the frame image information to obtain a data frame in the frame image information;
and decoding the data frame to acquire the information to be transmitted.
The video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
The steps of receiving video information, capturing frame image information in the video information, performing frame analysis on the frame image information, and obtaining a data frame in the frame image information further include: intercepting each frame of image in the video information, acquiring frame image information of each frame of image, analyzing the frame image information, and acquiring a data frame corresponding to each frame of image.
The decoding the data frame and acquiring the information to be transmitted specifically includes: analyzing the frame header information of the data frame, and extracting the bit stream information in the data frame according to the synchronization bit and the data length bit in the frame header information; and acquiring information to be transmitted according to the bit stream information.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method provided in the above first aspect.
An embodiment of the present invention further provides an information sending terminal, including:
at least one processor; and at least one memory coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the steps of the method as provided in the first aspect above.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method provided in the second aspect.
An embodiment of the present invention further provides an information receiving terminal, including:
at least one processor; and at least one memory coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the steps of the method as provided in the second aspect above.
The method provided by the invention converts the information to be transmitted into video information to be projected on the screen, carries out communication in a visible light wave band, has rich kinds of transferable information, is not limited and influenced by the coverage environment of internet signals compared with the traditional electronic equipment for scanning two-dimensional codes to obtain information, can relieve the problem of frequency spectrum resource exhaustion of mobile communication, and has strong anti-jamming capability based on the highly directional characteristic of the short wave frequency spectrum of visible light, and can be applied to an electromagnetic sensitive environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a sending end in a pixel communication method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a frame structure of a data frame in a pixel communication method according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a receiving end in a pixel communication method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an information sending terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an information receiving terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flowchart of a sending end in a pixel communication method according to an embodiment of the present invention, where the method includes:
s1, obtaining the information to be sent, coding the information to be sent and packaging the information to be sent into at least one data frame.
S2, converting the data frame into a plurality of pieces of frame image information consisting of pixel points, constructing video information through the frame image information, and sending the video information to a receiving end in a visible light form.
The video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
Specifically, at an information sending end, information to be sent, which is converted into a bit stream and then encoded to form a video stream, needs to be sent, and the information is sent by using an array light-emitting pixel point of a screen or a projected image as an optical signal transmitter.
The information to be sent can be files, pictures, audio and video stored in a sending end, the information to be sent is converted into data frame information by encoding the information to be sent, then the data frame information is converted into frame image information, one data frame information can be converted into multi-frame image information, the multi-frame image information is arranged to construct video information, and the video information is sent as an optical signal transmitter through a screen or array light-emitting pixel points of a projection device.
By the method, the information to be transmitted is converted into the video information consisting of the pixel points, the video information is projected on a screen, the information is communicated in a visible light wave band, the types of transferable information are rich, compared with the traditional electronic equipment for scanning the two-dimensional code to obtain the information, the method is not limited and influenced by the coverage environment of internet signals, the problem of the exhaustion of frequency spectrum resources of mobile communication can be relieved, meanwhile, the communication link has strong anti-jamming capability based on the highly directional characteristic of the short wave frequency spectrum of visible light, and the method can be applied to an electromagnetic sensitive environment.
On the basis of the foregoing embodiment, the step of encoding and encapsulating the information to be transmitted into at least one data frame specifically includes: coding the information to be transmitted to generate bit stream information; inserting frame head information and frame tail information into the bit information to obtain the data frame; wherein the frame header information at least includes a synchronization bit and a data length bit.
Wherein, the step of obtaining the information to be sent further comprises: and splitting the original information to be sent according to the length of the data bits in the data frame to obtain a plurality of pieces of information to be sent.
Specifically, in the process of converting information to be transmitted, original information to be transmitted, such as files, pictures, audio and video in storage, is read, information content is encoded and encapsulated into data frames, and the frame structure is divided into three sections as a whole: a header portion, a data portion, and an end-of-frame portion. When the length of the data to be sent exceeds the length which can be stored in one data frame, the original information can be split according to the length of the data bits in the data frame, the split content is encoded, and the data frame is encapsulated into a plurality of data frames. For the first frame encapsulated by the split original information, as shown in fig. 2, the frame header portion includes: synchronization bit, type flag bit, data length bit; the data portion of which contains data bits represented by an eight-bit binary number; the tail part of the frame comprises flag bits expressed by decimal numbers. Every frame except the first frame, its header part contains: synchronization bits, data length bits; the data part and the end part of the frame format are the same as the first frame.
Where the synchronization bits in the frame header are labeled with decimal numbers that are incremented by "1", "2", "3" …. The data type marking bit in the frame header is marked by three-digit ascending decimal numbers such as '001' and '002', and different formats of the carried information are distinguished according to certain coding rules. Wherein the data length bits in the header are represented by decimal digits representing the binary stream length of the frame data bits and the trailer is marked with the same incremental decimal digits as the sync bits, such as "1", "2", "3" …, to mark the end of a frame. The first frame is added with synchronous bits, type mark bits, data length bits and frame end in addition to data bits. Adding synchronization bit, data length bit and frame end to each frame except data bit; the sync bits are marked with "1", "2", "3", such increasing numbers, added to the frame header. The data type flag bit is marked by three ascending numbers such as '001' and '002', and is added to the frame header. The data length is directly expressed by decimal number of the data content changing into the bit stream length, and is added to the frame head. The end of a frame is marked with the same incremental numbers as the sync bits, e.g., "1", "2", "3".
By the method, the carrying amount of information is increased in the visible light communication process, different types of file information can be transmitted, and various information transmission requirements can be met.
Referring to fig. 3, fig. 3 is a schematic flowchart of a receiving end in a pixel communication method according to an embodiment of the present invention, where the method includes:
s31, receiving video information, intercepting frame image information in the video information, and performing frame analysis on the frame image information to obtain a data frame in the frame image information;
s32, decoding the data frame to obtain the information to be sent;
the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
Specifically, the information receiving end receives the optical signal sent by the screen or the projected image, performs frame analysis, image processing and decoding on the received optical signal, acquires the data sent by the sending end, and stores the data sent by the sending end in the receiving end.
In specific implementation, an information receiving end receives video information constructed by a plurality of frames of image information through a camera, an imager is used for receiving optical signals, the image information, namely frame image information, of each frame of picture of an information source sent by an information sending end is captured, then the image information is intercepted, useful information is reserved, the reserved image information is decoded, information of data bits in data frames is obtained, then the information sent by the sending end is obtained according to the information of the data bits in the data frames, and the information is stored in the receiving end.
By the method, a pixel communication mode based on visible light is realized, compared with the traditional visible light communication, the communication condition is not influenced by equipment, the types of transferable information are rich, and the amount of portable information in transmission is larger.
On the basis of the above embodiment, the step of capturing the frame image information in the video information, performing frame analysis on the frame image information, and obtaining the data frame in the frame image information further includes: intercepting each frame of image in the video information, acquiring frame image information of each frame of image, analyzing the frame image information, and acquiring a data frame corresponding to each frame of image.
The step of decoding the data frame and acquiring the information to be transmitted specifically includes:
analyzing the frame header information of the data frame, and extracting the bit stream information in the data frame according to the synchronization bit and the data length bit in the frame header information; and acquiring information to be transmitted according to the bit stream information.
Specifically, the receiving-end camera receives an optical signal by using the imager, captures image information of each frame of image of the information source sent by the sending end, intercepts the image information, retains a useful image part, decodes the image to obtain a data frame corresponding to the image, judges by using a synchronization bit in the decoded data frame, removes the data frame with the same synchronization bit, and then converts bit stream information carried in the data frame into original information and stores the original information.
According to the method, an information sending end converts information to be sent into bit streams by using intelligent equipment with a screen or an external projection device, the bit streams are encoded to form pictures consisting of pixel points, then videos are formed, the array luminous pixel points of the screen or the projection device serve as optical signal transmitters, a receiving end serves as optical receiving equipment through a camera, frame data are captured, and a processor finally decodes and restores the frame data into original information.
Fig. 4 illustrates a schematic structural diagram of an information transmitting terminal, and as shown in fig. 4, the terminal may include: a processor (processor)410, a memory (memory)430, and a bus 440, wherein the processor 410 and the memory 430 communicate with each other via the bus 440. The processor 410 may call logic instructions in the memory 430 to perform the following method: acquiring information to be transmitted, coding the information to be transmitted and encapsulating the information to be transmitted into at least one data frame; converting the data frame into a plurality of pieces of frame image information consisting of pixel points, constructing video information through the frame image information, and sending the video information to a receiving end in a visible light form; the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
The present embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, enable the computer to perform the methods provided by the above-described method embodiments, for example, including: acquiring information to be transmitted, coding the information to be transmitted and encapsulating the information to be transmitted into at least one data frame; converting the data frame into a plurality of pieces of frame image information consisting of pixel points, constructing video information through the frame image information, and sending the video information to a receiving end in a visible light form; the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including: acquiring information to be transmitted, coding the information to be transmitted and encapsulating the information to be transmitted into at least one data frame; converting the data frame into a plurality of pieces of frame image information consisting of pixel points, constructing video information through the frame image information, and sending the video information to a receiving end in a visible light form; the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
Fig. 5 illustrates a schematic structural diagram of an information receiving terminal, and as shown in fig. 5, the terminal may include: a processor (processor)510, a memory (memory)530, and a bus 540, wherein the processor 510 and the memory 530 communicate with each other via the bus 540. Processor 510 may call logic instructions in memory 530 to perform the following method: receiving video information, intercepting an image in the video information, and performing frame analysis on the image to obtain a data frame in the image; decoding the data frame to obtain information to be sent; the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
The present embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, enable the computer to perform the methods provided by the above-described method embodiments, for example, including: receiving video information, intercepting frame image information in the video information, and performing frame analysis on the frame image information to obtain a data frame in the frame image information; decoding the data frame to obtain information to be sent; the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including: receiving video information, intercepting frame image information in the video information, and performing frame analysis on the frame image information to obtain a data frame in the frame image information; decoding the data frame to obtain information to be sent; the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the receiving end receives the video information through a camera.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A pixel communication method, comprising:
acquiring information to be transmitted, coding the information to be transmitted and encapsulating the information to be transmitted into at least one data frame;
converting the data frame into a plurality of pieces of frame image information consisting of pixel points, constructing video information through the frame image information, and sending the video information to a receiving end in a visible light form;
the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the video information is received by the receiving end through a camera;
the frame structure of each data frame comprises frame head information, data information and frame tail information;
the data information comprises data bits represented by an eight-bit binary number;
the frame tail information comprises a flag bit expressed by decimal number;
the frame header information of the first encapsulated data frame comprises a synchronization bit, a type flag bit and a data length bit;
the encapsulated frame header information of other data frames except the first data frame comprises a synchronization bit and a data length bit;
the synchronization bits are marked with increasing decimal numbers;
the type flag bit is marked by three-digit increasing decimal numbers, and different formats of the carried information are distinguished according to a certain coding rule;
the data length bits represent a binary stream length of data bits of the data frame with decimal numbers.
2. The method according to claim 1, wherein the step of encoding and encapsulating the information to be transmitted into at least one data frame specifically comprises:
coding the information to be transmitted to generate bit stream information;
inserting frame head information and frame tail information into the bit stream information to obtain the data frame;
wherein the frame header information at least includes a synchronization bit and a data length bit.
3. The method of claim 1, wherein the step of obtaining the information to be transmitted further comprises: and splitting the original information to be sent according to the length of the data bits in the data frame to obtain a plurality of pieces of information to be sent.
4. A pixel communication method, comprising:
receiving video information, intercepting frame image information in the video information, and performing frame analysis on the frame image information to obtain a data frame in the frame image information;
decoding the data frame to obtain information to be sent;
the video information is used as an optical signal sending end through luminous pixel points in a screen or a projected image, and the video information is received by a receiving end through a camera;
the frame structure of each data frame comprises frame head information, data information and frame tail information;
the data information comprises data bits represented by an eight-bit binary number;
the frame tail information comprises a flag bit expressed by decimal number;
the frame header information of the first encapsulated data frame comprises a synchronization bit, a type flag bit and a data length bit;
the encapsulated frame header information of other data frames except the first data frame comprises a synchronization bit and a data length bit;
the synchronization bits are marked with increasing decimal numbers;
the type flag bit is marked by three-digit increasing decimal numbers, and different formats of the carried information are distinguished according to a certain coding rule;
the data length bits represent a binary stream length of data bits of the data frame with decimal numbers.
5. The method according to claim 4, wherein the step of intercepting the frame image information in the video information and performing frame parsing on the frame image information to obtain the data frame in the frame image information further comprises: intercepting each frame of image in the video information, acquiring frame image information of each frame of image, analyzing the frame image information, and acquiring a data frame corresponding to each frame of image.
6. The method according to claim 4 or 5, wherein the step of decoding the data frame and acquiring the information to be transmitted specifically comprises:
analyzing the frame header information of the data frame, and extracting the bit stream information in the data frame according to the synchronization bit and the data length bit in the frame header information;
and acquiring information to be transmitted according to the bit stream information.
7. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 3.
8. An information transmission terminal characterized by comprising:
at least one processor; and at least one memory coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 3.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 4 to 6.
10. An information receiving terminal characterized by comprising:
at least one processor; and at least one memory coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 4 to 6.
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| CN112825492B (en) * | 2019-11-21 | 2022-04-15 | 中国移动通信有限公司研究院 | Visible light communication method, device and storage medium |
| CN111314640B (en) * | 2020-02-23 | 2022-06-07 | 苏州浪潮智能科技有限公司 | Video compression method, device and medium |
| CN111885404A (en) * | 2020-07-16 | 2020-11-03 | RealMe重庆移动通信有限公司 | Data transmission method, device and storage medium |
| CN113162927B (en) * | 2021-04-19 | 2023-04-18 | 维沃移动通信有限公司 | Data transmission method, sending terminal, receiving terminal and electronic equipment |
| CN113328801B (en) * | 2021-05-19 | 2022-03-15 | 郑州信大捷安信息技术股份有限公司 | Data encryption communication method and device based on visible light communication |
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