CN112071189B - Digital sign based on data synchronization - Google Patents

Abstract

The utility model provides a digital signage based on data synchronization, which comprises: acquiring first position information of a target object at present, wherein the first position information comprises longitude and latitude information and height information; all signs in the neighborhood of the target object by taking the position corresponding to the first position information as the center are taken as second signs; and carrying out advertisement data sharing of the networked digital signage between the first signage and the second signage. The method overcomes the defect that the traditional encryption algorithm cannot ensure the information security.

Description

Digital sign based on data synchronization

The utility model relates to a divisional application of a digital label based on data synchronization, which is named as invention 2018-02-05 on the application number of 2018101117044.

Technical Field

The utility model belongs to the technical field of information interaction, and particularly relates to a digital signage based on data synchronization.

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 with application number 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 and analyzes the media content playing list of the platform end; 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.

Chinese utility model patent with application number CN201621296265.1 discloses an intelligent ad hoc network connecting device for digital signage, which mainly comprises: the wireless communication WiFi module, the power supply module, the high-speed memory module, the Flash module and the 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 caches multimedia data for the dss. The utility model 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 utility model 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 foregoing, it is a primary object of the present invention to provide a digital signage based on data synchronization for composing a group of digital signage that can share advertisement data with each other.

A digital signage based on data synchronization for composing a group of digital signage that can share advertisement data with each other, each digital signage comprising: the system comprises a position information acquisition unit, a position information acquisition unit and a position information acquisition unit, wherein the position information acquisition unit takes a digital label of the current position of a target object as a first label and is used for acquiring first position information of the current position of the target object, and the first position information comprises latitude and longitude information and height information; the power control unit is used for determining the residual capacity of the battery of the digital label; a second label determining unit configured to determine, as second labels, all labels in a neighborhood of the target object centered on a position corresponding to the first position information; the data synchronization unit is used for sharing the advertisement data of the networked digital signage between the first signage and the second signage when the residual electric quantity is greater than a preset value, and the sharing of the advertisement data of the networked digital signage comprises the following steps: 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, advertisement data are shared among the multiple screens in a second mode, the preset condition is that at least one second sign corresponding to the second position is in an un-interactive state, and the first mode and the second mode are both based on a 5G mobile communication network.

In the digital signage of the present invention, the first mode is data multicast transmission.

According to the digital signage, the multi-screen is a display matrix formed by mobile display equipment in a wireless mode temporarily.

The digital signage of the utility model, the plurality of screens of the display matrix belong to different personal mobile communication terminals.

The second aspect of the digital signage of the present invention is: the plurality of screens are moved by the person

The identifier of the communication terminal establishes a communication link;

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 s₁(t),…,s_n(t) and M key signals k₁(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)＝[x₁(t),…,x_N(t)]^T＝As_k(t)

wherein X (t) represents N encrypted signals, s_k(t)＝[s₁(t),…,s_n(t),k_M(t)]^TA is an encryption matrix of N x (M + N), and each value is [ -1,1]To (c) to (d); let A ═ A_S,A_k]Wherein A is_SIs a matrix of NxN, A_kIs an N × M matrix, encrypting

The formula is represented by the following formula:

X(t)＝A_ss(t)+A_kk(t)，

wherein s (t) ═ s₁(t),…，s_n(t)]^T，k(t)＝[k₁(t),…，k_M(t)]^T

Let N be M, establish the following encryption matrix:

wherein A isN x 2N matrix, B is 1 x N matrix, wherein the values are in the range of [ -0.3,0.3]D is a matrix of 1 XN, wherein the values range from [1,2.5]]C is a matrix of dimension Nx 1, each is [0.5, 1%]Generating random numbers evenly distributed among the B ═ B₁,b₂,…,b_n]，D＝[d₁,d₂,…,d_n],C＝[c₁,c₂,…,c_n]^TThen the encryption matrix is:

wherein the encryption matrix setting further comprises a calculation of an initial signal number, comprising:

suppose that

He Wei

Two signals picked from the received advertisement data at the ith time, where i ∈ [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 is₁And Z₂The combination is Z ═ Z₁ Z₂]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 is¹When less than 0, Z is-Z; otherwise, Z is Z;

performing K on clustering center angle theta space_θEvenly and equally dividing the mixture into equal parts,

where K is 1, …, K_θ(ii) a Calculate each theta_kThe value of the potential function phi (theta);

counting the peak value number N of the potential function in the whole angle theta space_iObtaining an estimated value of the initial signal quantity; and repeating the above steps until i is equal to n, and counting all estimated initial signal numbers.

The digital signage of the present invention, the decryption process of 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.

The digital signage based on data synchronization is provided, and simultaneously, the encryption and decryption algorithms adopted for protecting private information of a personal mobile communication terminal are also provided, so that the defect that the information safety when a plurality of mobile communication terminals or similar equipment are temporarily and wirelessly combined to form a display matrix to be used as the digital signage cannot be guaranteed by the traditional encryption algorithm is overcome, and the interactivity and the interestingness of the digital signage are improved.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 shows a block diagram of the components of a digital signage according to a preferred 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 utility model and are not intended to limit the utility model. 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 digital signage based on data synchronization for composing a group of digital signage that can share advertisement data with each other, each digital signage comprising: the system comprises a position information acquisition unit, a position information acquisition unit and a position information acquisition unit, wherein the position information acquisition unit takes a digital label of the current position of a target object as a first label and is used for acquiring first position information of the current position of the target object, and the first position information comprises latitude and longitude information and height information; the power control unit is used for determining the residual capacity of the battery of the digital label; a second label determining unit configured to determine, as second labels, all labels in a neighborhood of the target object centered on a position corresponding to the first position information; the data synchronization unit is used for sharing the advertisement data of the networked digital signage between the first signage and the second signage when the residual electric quantity is greater than a preset value, and the sharing of the advertisement data of the networked digital signage comprises the following steps: 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, advertisement data are shared among the multiple screens in a second mode, the preset condition is that at least one second sign corresponding to the second position is in an un-interactive state, and the first mode and the second mode are both based on a 5G mobile communication network.

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;

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 s₁(t),…,s_n(t) and M key signals k₁(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)＝[x₁(t),…,x_N(t)]^T＝As_k(t)

wherein X (t) represents N encrypted signals, s_k(t)＝[s₁(t),…,s_n(t),k_M(t)]^TA is an encryption matrix of N x (M + N), and each value is [ -1,1]To (c) to (d); let A ═ A_S,A_k]Wherein A is_SIs a matrix of NxN, A_kIs an N × M matrix, encrypting

The formula is represented by the following formula:

X(t)＝A_ss(t)+A_kk(t)，

wherein s (t) ═ s₁(t),…，s_n(t)]^T，k(t)＝[k₁(t),…，k_M(t)]^T

Let N be M, establish the following encryption matrix:

wherein, A is a matrix of Nx 2N, B is a matrix of 1 xN, the value range of each value is between [ -0.3,0.3], D is a matrix of 1 xN, the value range of each value is between [1,2.5], C is a matrix of Nx 1 dimension, and all the matrixes are generated by random numbers which are evenly distributed between [0.5,1],

let B be [ B ]₁,b₂,…,b_n]，D＝[d₁,d₂,…,d_n],C＝[c₁,c₂,…,c_n]^TThen the encryption matrix is:

wherein the encryption matrix setting further comprises a calculation of an initial signal number, comprising:

suppose that

He Wei

Two signals picked from the received advertisement data at the ith time, where i ∈ [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 is₁And Z₂The combination is Z ═ Z₁ Z₂]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 is¹When less than 0, Z is-Z; otherwise, Z is Z;

performing K on clustering center angle theta space_θEvenly and equally dividing the mixture into equal parts,

where K is 1, …, K_θ(ii) a Calculate each theta_kThe value of the potential function phi (theta);

counting the peak value number N of the potential function in the whole angle theta space_iObtaining an estimated value of the initial signal quantity; and repeating the above steps until i is equal to 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.

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, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 utility model as defined in the appended claims.

Claims (7)

1. A digital signage based on data synchronization, for composing a group of digital signage that can share advertisement data with each other, each digital signage comprising: the system comprises a position information acquisition unit, a position information acquisition unit and a position information acquisition unit, wherein the position information acquisition unit takes a digital label of the current position of a target object as a first label and is used for acquiring first position information of the current position of the target object, and the first position information comprises latitude and longitude information and height information; the power control unit is used for determining the residual capacity of the battery of the digital label; a second label determining unit configured to determine, as second labels, all labels in a neighborhood of the target object centered on a position corresponding to the first position information; the data synchronization unit is used for sharing the advertisement data of the networked digital signage between the first signage and the second signage when the residual electric quantity is greater than a preset value, and the sharing of the advertisement data of the networked digital signage comprises the following steps: 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, advertisement data are shared among the multiple screens in a second mode, the preset condition is that at least one second sign corresponding to the second position is in an un-interactive state, and the first mode and the second mode are both based on a 5G mobile communication network.

2. The digital signage of claim 1, in which the first mode is data multicast transmission.

3. The digital signage of claim 2, in which the multiple screens are a display matrix temporarily, wirelessly composed by mobile display devices.

4. The digital signage of claim 3, wherein the plurality of screens of the display matrix belong to different personal mobile communication terminals.

5. The digital signage of claim 4, wherein the second mode is:

establishing a communication link between the plurality of screens by using the identifier of the personal mobile communication terminal;

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 s₁(t),…,s_n(t) and M key signals k₁(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)＝[x₁(t),…,x_N(t)]^T＝As_k(t)

wherein X (t) represents N encrypted signals, s_k(t)＝[s₁(t),…,s_n(t),k_M(t)]^TA 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_SIs a matrix of NxN, A_kIs an N × M matrix, encrypting

The formula is represented by the following formula:

X(t)＝A_ss(t)+A_kk(t)，

wherein s (t) ═ s₁(t),…，s_n(t)]^T，k(t)＝[k₁(t),…，k_M(t)]^T

Let N be 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 values range from [1,2.5]]C is a matrix of dimension Nx 1, each is [0.5, 1%]Generating random numbers evenly distributed among the B ═ B₁,b₂,…,b_n]，D＝[d₁,d₂,…,d_n],C＝[c₁,c₂,…,c_n]^TThen the encryption matrix is:

6. the digital signage of claim 5, wherein the encryption matrix setting further comprises a calculation of an initial number of signals comprising:

suppose that

He Wei

Two signals picked from the received advertisement data at the ith time, where i ∈ [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 is₁And Z₂The combination is Z ═ Z₁ Z₂]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 is¹When less than 0, Z is-Z; otherwise, Z is Z;

performing K on clustering center angle theta space_θEvenly and equally dividing the mixture into equal parts,

where K is 1, …, K_θ(ii) a Calculate each theta_kThe value of the potential function phi (theta);

counting the peak value number N of the potential function in the whole angle theta space_iObtaining an estimated value of the initial signal quantity; and repeating the above steps until i is equal to n, and counting all estimated initial signal numbers.

7. The digital signage of claim 6, wherein the process of decrypting the encrypted advertising 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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