A method and system for information transmission
A technology of information transmission and embedded information, applied in the field of visible light communication, which can solve the problem of inaccurate pixel information of cameras
Active Publication Date: 2020-08-28
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU +1
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[0004] In view of this, the embodiment of the present invention provides an information transmission method and system, which can solve the problem in the prior art that the pixel information read by the camera is inaccurate due to the phenomenon of camera imaging mixing
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[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0045] figure 2 shows a flow chart of an information transmission method, refer to figure 2 , the method in the embodiment of the present invention is under the condition that the refresh direction of the display and the camera are the same, and the refresh rate of the two is the same, and the information of each frame received by the receiving end is the mixed information of two adjacent sending frames It is proposed that the method may include:
[0046] ...
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The application discloses an information transmission method and system. The information transmission method comprises the following steps: a sending end sequentially obtains two adjacent original frames without embedding information in an original frame sequence as a complementary combined frame according to an original frame generation order; sync frames are inserted among each complementary combined frame and before a first complementary combined frame; embedded information of equal size and opposite positive and negative is embedded in the two adjacent frames in the complementary combinedframe separately, and the sizes of the embedded information embedded in different complementary combined frame are different; the sync frame and the complementary combined frame embedded with the embedded information form a transmission frame sequence and are sent to a receiving end; the receiving end uses each received two frames of the transmission frame as a received combined frame; and the bearer information on the two frames in the received combined frame is subjected to a difference operation to obtain the embedded information. Since the sending end embeds the embedding information of equal size and opposite positive and negative in the two adjacent frames in the complementary combined frame separately, and inserts the sync frames, the accurate embedded information is obtained by performing difference operation on the bearer information on the two frames in the received combined frame.
Description
technical field [0001] The present invention relates to the technical field of visible light communication, in particular to an information transmission method and system. Background technique [0002] In recent years, visible light communication technology has gradually become a popular field of communication, and visible light imaging communication is one of the visible light communication. With the continuous development of imaging devices, the application of visible light imaging communication is becoming more and more extensive. Visible light imaging communication is divided into explicit imaging communication and implicit imaging communication. For implicit imaging communication, the display screen is mainly used as the sending end, and the camera is used as the receiving end. [0003] Because the display screen displays images by constantly refreshing images, while the camera uses progressive scan exposure and sequential readout to capture the images displayed on the ...
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IPC IPC(8): H04B10/116H04L1/00
CPCH04B10/116H04L1/0057H04L1/0071
Inventor 唐燕群胡赟鹏孟钰婷沈智翔姚祥文沈彩耀于宏毅张效义
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU