CN112130794B - Data interaction method of multi-screen spliced sign - Google Patents
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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Abstract
The invention provides a data interaction method of a multi-screen splicing sign, which comprises the following steps: acquiring first position information of a target object at present and current moving route information, wherein the first position information and the moving route information comprise longitude and latitude information, height information and speed information; predicting second position information to which the target object is to move according to the longitude and latitude information, the height information and the speed information, wherein the second position information comprises the longitude and latitude information, the height information and the speed information; when the preset condition is met, the first sign corresponding to the first position information and at least one second sign corresponding to the second position information enter a first interaction state, and advertisement data of the first sign corresponding to the first position information are shared to the at least one second sign corresponding to the second position information in a first mode in the first interaction state; when the second sign is a multi-screen spliced sign, the advertisement data are shared among the multiple screens in a second mode.
Description
The invention is a divisional application of a data interaction method of a multi-screen splicing sign, and is named as 2018-02-05 on the application date of 2018101108168.
Technical Field
The invention belongs to the technical field of information interaction, and particularly relates to a data interaction method for a multi-screen spliced sign.
Background
In recent years, digital signage (electronic signage) devices have been used as a means for advertising and publicizing an indefinite number of people in public places and the like. The digital signage apparatus is configured to include an image display unit capable of displaying an advertisement image generated from a digital image, and to be able to easily change the content of the advertisement. This makes it possible to provide viewers with the latest information, and thus provides an excellent advertisement effect as compared with a conventional signboard.
On the other hand, when the digital signage apparatus is used in an environment where the illuminance of external light greatly changes, such as outdoors, the visibility of the display image displayed on the image display unit greatly changes. Particularly when used in an environment where the illuminance of ambient light is low, it is known that the red color in a displayed image tends to appear dull and the blue color tends to appear bright due to a twilight phenomenon, that is, a change in human visual sensation characteristics.
For example, chinese patent application No. CN200910311605.1 discloses a digital signage system and method for dynamically updating and remotely monitoring a terminal, which relates to the field of digital signage in network communication technology, and aims to solve the problems of untimely update, resource waste and high cost of the existing digital signage system; the playing terminal reads the playing list, downloads and stores the media content, receives the control command and plays the media content; the content management monitoring platform is connected with the playing terminal through a network; the method comprises the steps that a, a content management monitoring platform is communicated with a playing terminal through a network; b. the playing terminal periodically reads a media content playing list of the platform end and analyzes the media content playing list; c. the playing terminal compares the media content information analyzed from the playing list with the local media content information, and if the media content information is different from the local media content information, the local playing list and the media content are updated; d. and the playing terminal plays the updated media content according to the updated playlist.
The chinese patent application No. CN201621296265.1 discloses an intelligent ad hoc network connection device for digital signage, which mainly comprises: the device comprises a wireless communication WiFi module, a power supply module, a high-speed memory module, a Flash module and a central processing unit; wherein: the wireless communication WiFi module is connected with the central processing unit through a PCIe interface; the power supply module supplies power to the portable hotspot router accessed by the mobile self-organization; the high-speed memory module of (1) caches multimedia data for the dss. The invention improves the on-line rate of the digital signage system on the premise of effectively reducing the implementation cost of the communication network of the digital signage system, and provides convenience for the digital signage system to realize the maintenance of updating, releasing and the like of real-time on-line multimedia information. The invention can realize the capacity of accessing the configuration-free intelligent ad hoc network to the digital signage system, reduce the integration cost of the digital signage system and accelerate the implementation efficiency of the communication network of the digital signage system.
However, the above-described prior art needs to fix the digital signage to a fixed position, and cannot take care of the situation that the target object (e.g., the object that the advertisement is expected to attract) is currently moved between a plurality of positions. Especially when some "flash" or performance venues desire to temporarily use personal mobile communication terminals to form digital signage.
Disclosure of Invention
In view of the above analysis, the present invention provides a data interaction method for a multi-screen spliced sign, and also provides a decryption algorithm thereof, and also realizes noise reduction processing on advertisement data noise during encryption and decryption, thereby overcoming the defects that the conventional encryption algorithm cannot ensure information security and the chaos system cannot encrypt the advertisement data noise to some extent.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a data interaction method for a multi-screen spliced sign comprises the following steps:
acquiring first position information of a target object at present and current moving route information, wherein the first position information and the moving route information comprise longitude and latitude information, height information and speed information;
predicting second position information to which the target object is to move according to the longitude and latitude information, the height information and the speed information, wherein the second position information comprises the longitude and latitude information, the height information and the speed information;
when the preset condition is met, the first sign corresponding to the first position information and at least one second sign corresponding to the second position information enter a first interaction state, and advertisement data of the first sign corresponding to the first position information are shared to the at least one second sign corresponding to the second position information in a first mode in the first interaction state;
and when the second signs are multi-screen spliced signs, sharing the advertisement data among the multiple screens in a second mode, wherein the preset condition is that at least one second sign corresponding to a second position is in an un-interactive state.
In the method of the present invention, the first mode is data multicast transmission.
According to the method, the multi-screen is a display matrix formed by mobile display equipment in a wireless mode temporarily.
According to the method, a plurality of screens of the display matrix belong to different personal mobile communication terminals.
In the method of the present invention, the second mode is:
establishing a communication link between the plurality of screens by using the identifier of the personal mobile communication terminal to which the screen belongs;
encrypting data interacted among the plurality of screens in a signal form that other signs or screens except the display matrix cannot interact with the display matrix with the advertisement data:
let N initial signals s 1 (t),…,s n (t) and M key signals k 1 (t),…，k M (t), N corresponds to the number of data packets that need to be shared between the multiple screens of the display matrix in a first manner, M corresponds to the number of screens in the display matrix, and the encryption formula is:
X(t)＝[x 1 (t),…,x N (t)] T ＝As k (t)
wherein X (t) denotes N encrypted signals, s k (t)＝[s 1 (t),…,s n (t),k1(t),…，k M (t)] T A is an encryption matrix of N x (M + N), and each value is [ -1,1]In between, let A = [ A = S ,A k ]Wherein A is S Is a matrix of NxN, A k Is an N × M matrix, encrypting
The formula is represented by the following formula:
X(t)＝A s s(t)+A k k(t)，
wherein s (t) = [ s = 1 (t),…，s n (t)] T ，k(t)＝[k 1 (t),…，k M (t)] T
Let N = M, establish the following encryption matrix:
wherein, A is matrix of Nx2N, B is matrix of 1 xN, and the value range of each value is [ -0.3,0.3]D is a matrix of 1 XN, wherein the value range of each value is [1,2.5 ]]C is a matrix of dimension Nx 1, all of which are [0.5,1]And generating random numbers evenly distributed among the random numbers, and enabling B = [ B = [ [ B ] 1 ,b 2 ,…,b n ]，D＝[d 1 ,d 2 ,…,d n ],C＝[c 1 ,c 2 ,…,c n ] T Then the encryption matrix is:
and finally, transmitting the encrypted data.
The method of the present invention, wherein the setting of the encryption matrix further comprises the calculation of the initial signal number, specifically comprising:
suppose that
He Wei
Two signals selected from the received advertisement data the ith time, where i e [1,n ∈ [ ]]Decomposing two advertisement data, selecting two most distant sub-signals by taking the sum of the distances from all the measured data to the closest linear focusing axis as a standard, and recording the two most distant sub-signals as
And
and Z is 1 And Z 2 The combination is Z = [ Z ] 1 Z 2 ]Truncating a part of the small component coefficients according to a preset threshold value, and performing the above step on the obtained systemThe number is processed symmetrically, all signal points are moved to the positive half plane if the first coordinate z of the measured data 1 If < 0, Z = -Z; otherwise, Z = Z;
performing K on clustering center angle theta space θ Evenly and equally dividing the mixture into equal parts,
where K =1, …, K θ (ii) a Calculating a potential function phi (theta) value at each theta k;
counting the peak value number N of the potential function in the whole angle theta space i Obtaining an estimated value of the initial signal quantity; and repeating the above steps until i = n, and counting all estimated initial signal numbers.
The method of the present invention, the process of decrypting the encrypted advertisement data comprises:
firstly, intercepting the number of advertisement data segments, the length of the advertisement data segments, the information of the advertisement data segments and the information of N encrypted advertisement data segments which are segmented by each frame from an encrypted advertisement data frame, reconstructing a key signal by utilizing a key seed, the number of the advertisement data segments of each frame and the length of the advertisement data segments based on a key signal generation algorithm, then combining the key signal with the signals of the N encrypted advertisement data segments, and separating the combined signals by applying a separation algorithm suitable for separating advertisement data to obtain a decrypted advertisement data segment signal and a recovery signal of the key signal.
According to the method, the first mode and the second mode are both based on the Internet of things.
The technical scheme of the invention has the following advantages:
the data interaction method for the multi-screen spliced sign is provided, and meanwhile, the encryption and decryption algorithms adopted for protecting private information of the personal mobile communication terminal are also provided, so that the defect that the traditional encryption algorithm cannot ensure that a plurality of mobile communication terminals or similar equipment form a display matrix temporarily and wirelessly to be used as the digital sign in the information security mode is overcome, and the interactivity and the interestingness of the digital sign are improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flow chart of a method of 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. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, a data interaction method for a multi-screen spliced sign includes the following steps:
acquiring first position information of a target object at present and current moving route information, wherein the first position information and the moving route information comprise longitude and latitude information, height information and speed information;
predicting second position information to which the target object is to move according to the longitude and latitude information, the height information and the speed information, wherein the second position information comprises the longitude and latitude information, the height information and the speed information;
when a preset condition is met, a first sign corresponding to the first position information and at least one second sign corresponding to the second position information enter a first interaction state, and advertisement data of the first sign corresponding to the first position information are shared to the at least one second sign corresponding to the second position information in a first mode in the first interaction state;
when the second signs are multi-screen spliced signs, the multiple screens share the advertisement data with each other in a second mode, and the preset condition is that at least one second sign corresponding to the second position is in an un-interactive state.
Preferably, the first mode is data multicast transmission.
Preferably, the multiple screens are display matrixes temporarily and wirelessly composed of mobile display devices.
Preferably, the plurality of screens of the display matrix belong to different personal mobile communication terminals.
Preferably, the second mode is:
establishing a communication link between the plurality of screens by using the identifier of the personal mobile communication terminal to which the screen belongs; encrypting data interacted among the plurality of screens in a signal form that other signs or screens except the display matrix cannot interact with the display matrix with the advertisement data:
let N initial signals s 1 (t),…,s n (t) and M key signals k 1 (t),…，k M (t), N corresponds to the number of data packets that need to be shared between the multiple screens of the display matrix in a first manner, M corresponds to the number of screens in the display matrix, and the encryption formula is:
X(t)＝[x 1 (t),…,x N (t)] T ＝As k (t)
wherein X (t) denotes N encrypted signals, s k (t)＝[s 1 (t),…,s n (t),k1(t),…，k M (t)] T A is an encryption matrix of N x (M + N), and each value is [ -1,1]In between, let A = [ A = S ,A k ]Wherein A is S Is a matrix of NxN, A k Is an N × M matrix, encrypting
The formula is represented by the following formula:
X(t)＝A s s(t)+A k k(t)，
wherein s (t) = [ s = 1 (t),…，s n (t)] T ，k(t)＝[k 1 (t),…，k M (t)] T
Let N = M, establish the following encryption matrix:
wherein, A is a matrix of Nx2N, B is a matrix of 1 xN, and the value ranges of the matrix and the matrix are
[-0.3,0.3]D is a matrix of 1 XN, wherein the value range of each value is [1,2.5 ]]C is a matrix of dimension Nx 1, all of which are [0.5,1]And generating random numbers evenly distributed among the random numbers, and enabling B = [ B = [ [ B ] 1 ,b 2 ,…,b n ]，D＝[d 1 ,d 2 ,…,d n ],C＝[c 1 ,c 2 ,…,c n ] T Then the encryption matrix is:
and finally, transmitting the encrypted data.
Preferably, the setting of the encryption matrix further includes calculating the number of initial signals, specifically including:
suppose that
He Wei
Two signals selected from the received advertisement data the ith time, where i e [1,n ∈ [ ]]Decomposing two advertisement data, selecting two distant subsignals by taking the sum of the distances from all the measured data to the closest linear axis as a standard, and recording the two most distant subsignals as
And
and Z is 1 And Z 2 The combination is Z = [ Z ] 1 Z 2 ]According to the preset threshold value, cutting off a part of small component coefficient, making symmetry treatment on the coefficient obtained in the last step, moving all signal points to positive half surface, if the first coordinate z of measured data is 1 If < 0, Z = -Z; otherwise, Z = Z;
performing K on clustering center angle theta space θ Evenly and equally dividing the mixture into equal parts,
medium K =1, …, K θ (ii) a Calculating a potential function phi (theta) value at each theta k;
counting the peak value number N of the potential function in the whole angle theta space i Obtaining an estimated value of the initial signal quantity; and repeating the above steps until i = n, and counting all estimated initial signal numbers.
Preferably, the decryption process of the encrypted advertisement data includes:
firstly, intercepting the number of advertisement data segments, the length of the advertisement data segments, the information of the advertisement data segments and the information of N encrypted advertisement data segments which are segmented by each frame from an encrypted advertisement data frame, reconstructing a key signal by utilizing a key seed, the number of the advertisement data segments of each frame and the length of the advertisement data segments based on a key signal generation algorithm, then combining the key signal with the signals of the N encrypted advertisement data segments, and separating the combined signals by applying a separation algorithm suitable for separating advertisement data to obtain a decrypted advertisement data segment signal and a recovery signal of the key signal.
According to the method, the first mode and the second mode are both based on the Internet of things.
In the method of the present invention, the first mode and the second mode are both based on a 5G mobile communication network.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (3)
1. A data interaction method for a multi-screen spliced sign comprises the following steps:
acquiring first position information of a target object at present and current moving route information, wherein the first position information and the moving route information comprise longitude and latitude information, height information and speed information;
predicting second position information to which the target object is to move according to the longitude and latitude information, the height information and the speed information, wherein the second position information comprises the longitude and latitude information, the height information and the speed information;
when the preset condition is met, the first sign corresponding to the first position information and at least one second sign corresponding to the second position information enter a first interaction state, and advertisement data of the first sign corresponding to the first position information are shared to the at least one second sign corresponding to the second position information in a first mode in the first interaction state;
when the second sign is the many screens concatenation sign, share advertisement data each other with the second mode between the many screens, the preset condition is that at least one second sign that the second position corresponds is in the non-interactive state, first mode and second mode all are based on 5G mobile communication network, first mode is data multicast formula transmission, many screens are for by mobile display device temporarily, with the display matrix that the wireless mode is constituteed, a plurality of screens of display matrix belong to different individual mobile communication terminals, the second mode is: establishing a communication link between the plurality of screens by using the identifier of the personal mobile communication terminal to which the screen belongs;
encrypting data interacted among the plurality of screens in a signal form that other signs or screens except the display matrix cannot interact with the display matrix with the advertisement data:
let N initial signals s 1 (t),…,s n (t) and M key signals k 1 (t),…，k M (t), N corresponds to the number of data packets that need to be shared between the multiple screens of the display matrix in a first manner, M corresponds to the number of screens in the display matrix, and the encryption formula is:
X(t)＝[x 1 (t),…,x N (t)] T ＝As k (t)
wherein X (t) denotes N encrypted signals, s k (t)＝[s 1 (t),…,s n (t),k1(t),…，k M (t)] T A is an encryption matrix of N x (M + N), and each value is [ -1,1]In between, let A = [ A = S ,A k ]Wherein A is S Is a matrix of NxN, A k Is an N × M matrix, encrypting
The formula is represented by the following formula:
X(t)＝A s s(t)+A k k(t)，
wherein s (t) = [ s = 1 (t),…，s n (t)] T ，k(t)＝[k 1 (t),…，k M (t)] T
Let N = M, establish the following encryption matrix:
wherein, A is matrix of Nx2N, B is matrix of 1 xN, and the value range of each value is [ -0.3,0.3]D is a matrix of 1 XN, wherein the value range of each value is [1,2.5 ]]C is a matrix of dimension Nx 1, all of which are [0.5,1]And generating random numbers evenly distributed among the random numbers, and enabling B = [ B = [ [ B ] 1 ,b 2 ,…,b n ]，D＝[d 1 ,d 2 ,…,d n ],C＝[c 1 ,c 2 ,…,c n ] T Then the encryption matrix is:
2. the method of claim 1, wherein the encryption matrix setting further comprises a calculation of an initial number of signals, comprising:
suppose that
He Wei
Two signals selected from the received advertisement data the ith time, where i e [1,n ∈ [ ]]Decomposing two advertisement data, selecting two most distant sub-signals by taking the sum of the distances from all the measured data to the closest linear focusing axis as a standard, and recording the two most distant sub-signals as
And
and Z is 1 And Z 2 The combination is Z = [ Z ] 1 Z 2 ]Truncating a part of small component coefficients according to a preset threshold value, symmetrically processing the coefficients obtained in the previous step, moving all signal points to the positive half plane, and if the number of the measured values is large, carrying out the symmetrical processing on the coefficientsAccording to the first coordinate z 1 If < 0, Z = -Z;
otherwise, Z = Z;
performing K on clustering center angle theta space θ Evenly and equally dividing the mixture into equal parts,
where K =1, …, K θ (ii) a Calculating a potential function phi (theta) value at each theta k;
counting the peak value number N of the potential function in the whole angle theta space i Obtaining an estimated value of the initial signal quantity; and repeating the above steps until i = n, and counting all estimated initial signal numbers.
3. The method of claim 2, wherein the process of decrypting the encrypted advertisement data comprises:
firstly, intercepting the number of advertisement data segments, the length of the advertisement data segments, the information of the advertisement data segments and the information of N encrypted advertisement data segments which are segmented by each frame from an encrypted advertisement data frame, reconstructing a key signal by utilizing a key seed, the number of the advertisement data segments of each frame and the length of the advertisement data segments based on a key signal generation algorithm, then combining the key signal with the signals of the N encrypted advertisement data segments, and separating the combined signals by applying a separation algorithm suitable for separating advertisement data to obtain a decrypted advertisement data segment signal and a recovery signal of the key signal.
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| CN108255455A (en) | 2018-07-06 |
| CN108255455B (en) | 2020-12-04 |
| CN112130794A (en) | 2020-12-25 |
| CN112130794B8 (en) | 2022-12-30 |
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Effective date of registration: 20221123 Address after: No.10606, 6th floor, unit 1, building 1, block h, Jinhui world city, Qujiang New District, Xi'an City, Shaanxi Province, 710000 Applicant after: Shaanxi Jingcheng exhibition decoration Co.,Ltd. Address before: 610041 No. 6, D District, Tianfu Software Park, 599 Century City South Road, Chengdu High-tech Zone, Sichuan, China. Applicant before: CHENGDU RUIDA ZHIXIANG TECHNOLOGY Co.,Ltd. |
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Correction item: Patentee; Address; Patent agency; Patent Agent Correct: Shaanxi Jingcheng exhibition decoration Co.,Ltd.|No.10606, 6th floor, unit 1, building 1, block h, Jinhui world city, Qujiang New District, Xi'an City, Shaanxi Province, 710000|Beijing Xinzhonghui Intellectual Property Agency (General Partnership) 16069|Wen Xin Jia False: CHENGDU RUIDA ZHIXIANG TECHNOLOGY Co.,Ltd.|610041 No. 6, D District, Tianfu Software Park, 599 Century City South Road, Chengdu High-tech Zone, Sichuan, China.;N/A Number: 48-01 Page: The title page Volume: 38 Correction item: Patentee; Address; Patent agency; Patent Agent Correct: Shaanxi Jingcheng exhibition decoration Co.,Ltd.|No.10606, 6th floor, unit 1, building 1, block h, Jinhui world city, Qujiang New District, Xi'an City, Shaanxi Province, 710000|Beijing Xinzhonghui Intellectual Property Agency (General Partnership) 16069|Wen Xin Jia False: CHENGDU RUIDA ZHIXIANG TECHNOLOGY Co.,Ltd.|610041 No. 6, D District, Tianfu Software Park, 599 Century City South Road, Chengdu High-tech Zone, Sichuan, China.;N/A Number: 48-01 Volume: 38 |
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