CN107171801B - Method and device for encrypted binding and encrypted display control and display screen system - Google Patents
Method and device for encrypted binding and encrypted display control and display screen system Download PDFInfo
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- CN107171801B CN107171801B CN201710289468.0A CN201710289468A CN107171801B CN 107171801 B CN107171801 B CN 107171801B CN 201710289468 A CN201710289468 A CN 201710289468A CN 107171801 B CN107171801 B CN 107171801B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3226—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using a predetermined code, e.g. password, passphrase or PIN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3234—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving additional secure or trusted devices, e.g. TPM, smartcard, USB or software token
Abstract
The embodiment of the invention discloses a method and a device for encryption binding and encryption display control and a display screen system. After the display screen controller is connected with the display screen control card, the program at the end of the display screen controller can start the encryption function of the display screen control card, designated data is sent uninterruptedly between the display screen controller and the display screen control card in the using process, if the display screen controller is replaced, the display screen control card cannot receive the designated data sent by the display screen controller, the display screen control card does not continue to work, the display of the display screen is abnormal, and the effect of binding the display screen control card and the display screen controller is achieved.
Description
Technical Field
The invention relates to the technical field of display, in particular to an encryption binding method and device, an encryption display control method and device and a display screen system.
Background
For the current commercial LED display market, some users need to charge according to the using date, using time and the like of the screen body by the user, at the moment, a scheme which can encrypt and authorize the screen body is needed, and when the authorization expires, the screen does not normally display any more.
The prior art provides a technical scheme for carrying out encryption binding on an LED display screen control system and a computer, and for an illegal user to replace the computer or the LED display screen control system, the LED display screen control system can recognize and carry out interception processing, so that the playing safety performance of the system is improved; the illegal video source played by the computer is replaced, and the LED display screen control system is not accepted, so that the problem of playing safety in the field of the LED display screen control system is solved; but it cannot implement the encrypted binding between the internal components of the LED display control system.
Disclosure of Invention
The embodiment of the invention provides an encryption binding method, an encryption binding device, an encryption display control method, an encryption display control device and a display screen system, and solves the problem that the prior art cannot realize the encryption binding among internal components of an LED display screen control system.
On one hand, the method for encrypting and binding is provided, and is applied to a display screen controller in an LED display screen control system, and the LED display screen control system also comprises a display screen control card; the encryption binding method comprises the following steps: detecting the value of an encryption flag bit in a register to judge whether encryption output is needed or not; detecting whether the display screen control card is connected and powered on; and when detecting that the display screen control card is connected with power and needs to be encrypted and output, adding a secret key code into a field frequency signal of image data to be output to the display screen control card connected with power, and sending an encryption binding instruction to the display screen control card connected with power so as to enable the display screen control card connected with power to carry out encryption binding.
In an embodiment of the present invention, the cryptographic binding method further includes: receiving an encrypted binding control command of an upper computer; and solidifying parameters in the encrypted binding control command to the encrypted flag bit in the register in response to the encrypted binding control command.
In an embodiment of the present invention, the cryptographic binding method further includes: and adding an encryption binding enabling mark in the field frequency signal as the encryption binding instruction, wherein the encryption binding enabling mark is positioned in front of the secret key code in the field frequency signal.
On the other hand, the encrypted binding device is applied to a display screen controller in an LED display screen control system, and the LED display screen control system further comprises a display screen control card; the encryption binding device comprises: the first detection module is used for detecting the value of the encryption flag bit in the register and judging whether encryption output is needed or not; the second detection module is used for detecting whether the display screen control card is connected and powered on; and the encryption binding control module is used for adding a secret key code into a field frequency signal of image data to be output to the display screen control card connected with the power-on display screen and sending an encryption binding instruction to the display screen control card connected with the power-on display screen to enable the display screen control card connected with the power-on display screen to carry out encryption binding when the display screen control card is connected with the power-on display screen and needs encryption output.
In an embodiment of the present invention, the cryptographic binding apparatus further includes: and the encryption binding setting module is used for receiving an encryption binding control command of an upper computer and responding to the encryption binding control command to solidify parameters in the encryption binding control command to the encryption flag bit in the register.
In one embodiment of the present invention, the cryptographic binding control module includes: and the encryption binding instruction generation sub-module is used for adding an encryption binding enabling mark into the field frequency signal as the encryption binding instruction, and the encryption binding enabling mark is positioned in front of the secret key code in the field frequency signal.
On the other hand, the encrypted display control method is applied to a display screen control card in an LED display screen control system, and the LED display screen control system also comprises a display screen controller which is connected with the display screen control card and is powered on; the encryption display control method comprises the following steps: periodically judging whether a secret key code in a field frequency signal of input image data is successfully matched with a secret key code preset locally; if the matching is successful, displaying the input image data on a display screen; and if the matching fails, intercepting the input image data.
In an embodiment of the present invention, the periodically determining whether the key code in the field frequency signal of the input image data is successfully matched with the locally preset key code includes: and judging whether the key code in each field frequency signal of the input image data is successfully matched with a locally preset key code.
In an embodiment of the present invention, if the matching fails, intercepting the input image data includes: and controlling the display screen to be black.
In an embodiment of the present invention, before periodically determining whether a key code in a field frequency signal of input image data matches a locally preset key code, the encryption display control method includes: carrying out encryption binding with the display screen controller in response to an encryption binding instruction input from the display screen controller; wherein the display screen controller is configured to provide the input image data.
In another aspect, an encrypted display control device is provided, which is applied to a display screen control card in an LED display screen control system, where the LED display screen control system further includes a display screen controller connected to the display screen control card; the encryption display control device includes: the key matching module is used for periodically judging whether the key codes in the field frequency signals of the input image data are successfully matched with the locally preset key codes or not; and the display control module is used for displaying the input image data on a display screen when the matching is successful or intercepting the input image data when the matching is failed.
In one embodiment of the present invention, the encryption display control apparatus includes: the encrypted binding module is used for responding to an encrypted binding instruction input from the display screen controller to carry out encrypted binding with the display screen controller; wherein the display screen controller is configured to provide the input image data.
In yet another aspect, a display screen system is provided, including: the LED display screen control system comprises a display screen controller and a display screen control card, and the display screen control card is connected with the LED display screen. The display screen controller is configured to: the method comprises the steps of detecting the value of an encryption flag bit in a register to judge whether encryption output is needed, detecting whether a display screen control card is connected and powered on, adding a secret key code into a field frequency signal of image data to be output to the display screen control card connected and powered on when the display screen control card is detected to be connected and powered on and encryption output is needed, and sending an encryption binding instruction to the display screen control card connected and powered on to enable the display screen control card connected and powered on to carry out encryption binding. The display screen control card connected with power is configured to: after encryption and binding, periodically judging whether a secret key code in a field frequency signal of input image data is successfully matched with a locally preset secret key code, and displaying the input image data on the LED display screen when the matching is successful or intercepting the input image data when the matching is failed.
In one embodiment of the invention, the display screen controller is configured to: and receiving an encryption binding control command of an upper computer, responding to the encryption binding control command, and solidifying parameters in the encryption binding control command to the encryption flag bit in the register.
In one embodiment of the invention, the display screen controller is configured to: and adding an encryption binding enabling mark in the field frequency signal as the encryption binding instruction, wherein the encryption binding enabling mark is positioned in front of the secret key code in the field frequency signal.
One of the above technical solutions has the following advantages or beneficial effects: after the display screen controller is connected with the display screen control card, the program at the end of the display screen controller starts the encryption function of the display screen control card, designated data is sent uninterruptedly between the display screen controller and the display screen control card in the using process, if the display screen controller is replaced, the display screen control card cannot receive the designated data sent by the display screen controller, the display screen control card does not work any more, the display of the display screen is abnormal, and the effect of binding the display screen control card and the display screen controller is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flowchart illustrating a cryptographic binding method according to a first embodiment of the present invention;
FIG. 2 is a flow diagram illustrating a method of cryptographic binding in other embodiments;
FIG. 3 is a flowchart illustrating a display control method according to a second embodiment of the present invention;
FIG. 4 is a flow chart illustrating a display control method according to another embodiment;
FIG. 5 is a block diagram of a cryptographic binding apparatus according to a third embodiment of the present invention;
FIG. 6 is a block diagram of a cryptographic binding apparatus in other embodiments;
FIG. 7 is a block diagram of a cryptographic binding apparatus in yet another embodiment;
FIG. 8 is a block diagram of an encryption display control apparatus according to a fourth embodiment of the present invention;
FIG. 9 is a block diagram of an encryption display control apparatus in another embodiment;
fig. 10 is a schematic diagram of a display screen system according to a fifth embodiment of the invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
First embodiment
As shown in fig. 1, an encrypted binding method provided in a first embodiment of the present invention includes:
step S11, detecting the value of the encryption flag bit in the register to judge whether the encryption output is needed;
step S13: detecting whether a control card connected with the display screen is powered on or not;
and step S15, when detecting that the display screen control card is connected with power and needs to be encrypted and output, adding a secret key code into a field frequency signal of image data to be output to the display screen control card connected with power, and sending an encryption binding instruction to the display screen control card connected with power to enable the display screen control card connected with power to carry out encryption binding.
In this embodiment, the steps S11, S13 and S15 are executed by, for example, a display controller, for example, a dual-mode asynchronous control card or a sending card, for example, to perform encryption binding with a rear-end display control card, for example, a receiving card, and the key code may be a product SN number or other pre-agreed data string. Specifically, when the display screen controller is connected with the display screen control card, the display screen controller can judge whether encryption output is needed according to the value of the encryption flag bit in the local register, if so, a default fixed secret key code is added into a field frequency signal in image data output of the display screen control card, and an encryption binding instruction is sent to the display screen control card. And in the using process, the display screen controller continuously sends the secret key code to the display screen control card through the field frequency signal so as to confirm that the display screen controller and the display screen control card are still in a binding state, and if the display screen control card does not receive the corresponding secret key code, the display screen controller is considered to be replaced, and the display screen control card automatically stops working. Therefore, the purpose of encrypting and binding the front-end display screen controller and the rear-end display screen control card can be achieved.
Preferably, an encryption binding enable flag may be added to the field frequency signal as the encryption binding instruction, and the encryption binding enable flag is located before the key code in the field frequency signal; the purpose of encrypting and binding the front-end display screen controller and the rear-end display screen control card can be achieved.
Further, in other embodiments, referring to fig. 2, step S10a and step S10b may also be performed on the display screen controller. Step S10 a: receiving an encrypted binding control command of an upper computer; and step S10 b: and solidifying the parameters in the encryption binding control command to the encryption flag bit in the register in response to the encryption binding control command. By executing steps S10a and S10b, the detection result is obtained as the encrypted output required when step S11 is executed subsequently.
Second embodiment
As shown in fig. 3, an encryption display control method provided in a second embodiment of the present invention includes:
step S31, periodically judging whether the key code in the field frequency signal of the input image data is successfully matched with the locally preset key code;
step S33: if the matching is successful, displaying the input image data on a display screen;
step S35: and if the matching fails, intercepting the input image data.
In this embodiment, the steps S31, S33 and S35 are executed by the display screen control card, for example, to perform encryption binding with the front-end display screen controller, such as a dual-mode asynchronous control card or a sending card, and the display screen control card is, for example, a receiving card. Specifically, after the display screen control card and the front-end display screen controller are encrypted and bound, the display screen control card program can perform matching verification on a secret key code which is stored locally in advance and a secret key code in a field frequency signal sent by the front-end display screen controller by default, if matching is successful, the bound card is considered to be the bound card, the display screen can be normally driven to display, and if matching is unsuccessful, the display screen cannot be normally driven to display. For example, if a user replaces other display screen control cards or replaces other display screen controllers in the normal working process, the whole system cannot work normally, and the display output is a state that the black screen cannot display normally.
Preferably, in step S31, it may be determined whether the key code in each field frequency signal of the input image data is successfully matched with the locally preset key code. Of course, it is not necessary to perform the matching determination so frequently, and the matching determination may be performed at intervals (corresponding to a plurality of field frequency signals), for example.
Further, in other embodiments, referring to FIG. 4, before proceeding to step S31, a step S30 of cryptographically binding the front-end display controller in response to a cryptographically binding command input from the front-end display controller may also be performed. The execution of step S30 is typically a precondition for the execution of step S31.
Third embodiment
As shown in fig. 5, an encryption binding apparatus 50 provided in a third embodiment of the present invention includes: a first detection module 51, a second detection module 53 and an encryption binding control module 55. The first detection module 51 is configured to detect a value of an encryption flag bit in a register and determine whether encryption output is required; the second detection module 53 is configured to detect whether the display screen control card is connected to a power supply; and the encryption binding control module 55 is configured to, when it is detected that the display screen control card is connected to power up and needs to be encrypted for output, add a key code to a field frequency signal of image data to be output to the display screen control card connected to power up, and send an encryption binding instruction to the display screen control card connected to power up to enable the display screen control card connected to power up to perform encryption binding.
The encryption binding apparatus 50 of this embodiment is implemented by, for example, a display controller such as a dual-mode asynchronous control card or a transmission card, and is used for performing encryption binding with a rear-end display control card, when the display controller is connected to the display control card, the display controller may determine whether encryption output is required according to a value of an encryption flag bit in a local register, add a default fixed secret key code to a field frequency signal in image data output of the display control card if required, and transmit the encryption binding to the display control card. And in the using process, the display screen controller continuously sends the secret key code to the display screen control card through the field frequency signal so as to confirm that the display screen controller and the display screen control card are still in a binding state, and if the display screen control card does not receive the corresponding secret key code, the display screen controller is considered to be replaced, and the display screen control card automatically stops working. Therefore, the purpose of encrypting and binding the front-end display screen controller and the rear-end display screen control card can be achieved.
In other embodiments, as shown in fig. 6, the encryption binding apparatus may further include an encryption binding setting module 52, configured to receive an encryption binding control command from the upper computer, and solidify a parameter in the encryption binding control command to the encryption flag bit in the register in response to the encryption binding control command. Through the configuration of the encryption binding setting module 52, the subsequent first detection module 51 will obtain the detection result as the required encryption output.
In another embodiment, as shown in fig. 7, the encryption binding control module 55 for example includes an encryption binding instruction generating submodule 551, which is configured to add an encryption binding enable flag in a field frequency signal (e.g. the first or the first consecutive ones) as the encryption binding instruction, and the encryption binding enable flag is located before the key code in the field frequency signal. Thus, the sending of the encrypted binding command can be simplified.
Fourth embodiment
As shown in fig. 8, an encryption display control apparatus 80 provided in a fourth embodiment of the present invention includes: a key matching module 81 and a display control module 83. The key matching module 81 is configured to periodically determine whether a key code in a field frequency signal of the input image data is successfully matched with a locally preset key code; the display control module 83 is configured to display the input image data on a display screen when the matching is successful or intercept the input image data when the matching is failed.
The encryption display control device 80 of this embodiment is implemented by, for example, a display screen control card such as a receiving card, and is used for performing encryption binding with a front-end display screen controller, after the display screen control card is encrypted and bound with the front-end display screen controller, a display screen control card program defaults to match and verify a locally pre-stored secret key code with a secret key code in a field frequency signal sent by the front-end display screen controller, if matching is successful, the card is considered to be the bound card, and the received image data is processed and then output, the display screen can be normally driven to display, and if matching is unsuccessful, the display screen cannot be normally driven to display, for example, the received image data is discarded without being processed. For example, if a user replaces other display screen control cards or replaces other display screen controllers in the normal working process, the whole system cannot work normally, and the display output is a state that the black screen cannot display normally.
In other embodiments, as shown in fig. 9, the encryption display control apparatus may further include an encryption binding module 85 configured to perform encryption binding with the front-end display screen controller in response to an encryption binding command input from the front-end display screen controller. Here, the configuration of the cryptographic binding module 85 typically provides a precondition for the start-up of the key matching module 81.
Fifth embodiment
As shown in fig. 10, a display screen system 100 provided in a fifth embodiment of the present invention includes: the system comprises a display screen controller 101, a display screen control card 103 and an LED display screen 105; the display screen control card 103 is connected between the display screen controller 101 and the LED display screen 105.
The display screen controller 101 of the present embodiment is configured to execute an encryption binding method, and specific contents refer to the foregoing embodiments shown in fig. 1 and fig. 2; the display screen control card 103 is configured to execute an encryption display control method, and specific contents refer to the foregoing embodiments shown in fig. 3 and 4. After the display screen controller 101 and the display screen control card 103 are connected, a program at the end of the display screen controller 101 starts an encryption function of the display screen control card, designated data is sent between the display screen controller 101 and the display screen control card 103 uninterruptedly in the using process, if the display screen controller 101 is replaced, the display screen control card cannot receive the designated data sent by the display screen controller 101, the display screen control card 103 does not work any more, the LED display screen 105 displays abnormity, and the effect of binding the display screen control card 103 and the display screen controller 101 is achieved. Finally, for example, the display controller 101 is, for example, a dual-mode asynchronous control card or a sending card, and the display control card 103 is, for example, a receiving card.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
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 multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
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 (13)
1. The encryption binding method is characterized by being applied to a display screen controller in an LED display screen control system, wherein the LED display screen control system further comprises a display screen control card; the encryption binding method comprises the following steps:
detecting the value of an encryption flag bit in a register to judge whether encryption output is needed or not;
detecting whether the display screen control card is connected and powered on;
when detecting that the display screen control card is connected with power and needs to be encrypted and output, adding a secret key code into a field frequency signal of image data to be output to the display screen control card connected with power, and sending an encryption binding instruction to the display screen control card connected with power so as to enable the display screen control card connected with power to be encrypted and bound.
2. The cryptographic binding method of claim 1, comprising:
receiving an encrypted binding control command of an upper computer;
and solidifying the parameters in the encrypted binding control command to the encrypted flag bit in the register in response to the encrypted binding control command.
3. The cryptographic binding method of claim 1 or 2, comprising:
and adding an encryption binding enabling mark in the field frequency signal as the encryption binding instruction, wherein the encryption binding enabling mark is positioned in front of the secret key code in the field frequency signal.
4. The encryption binding device is characterized by being applied to a display screen controller in an LED display screen control system, wherein the LED display screen control system further comprises a display screen control card; the encryption binding device comprises:
the first detection module is used for detecting the value of the encryption flag bit in the register and judging whether encryption output is needed or not;
the second detection module is used for detecting whether the display screen control card is connected and powered on;
and the encryption binding control module is used for adding a secret key code into a field frequency signal of image data to be output to the display screen control card connected with the power-on display screen and sending an encryption binding instruction to the display screen control card connected with the power-on display screen to enable the display screen control card connected with the power-on display screen to carry out encryption binding when the display screen control card is connected with the power-on display screen and needs encryption output.
5. The cryptographic binding apparatus of claim 4, comprising:
and the encryption binding setting module is used for receiving an encryption binding control command of an upper computer and responding to the encryption binding control command to solidify parameters in the encryption binding control command to the encryption flag bit in the register.
6. The cryptographic binding apparatus of claim 4 or 5, wherein the cryptographic binding control module comprises: and the encryption binding instruction generation sub-module is used for adding an encryption binding enabling mark into the field frequency signal as the encryption binding instruction, and the encryption binding enabling mark is positioned in front of the secret key code in the field frequency signal.
7. The encryption display control method is characterized by being applied to a display screen control card in an LED display screen control system, wherein the LED display screen control system also comprises a display screen controller which is connected with the display screen control card and is powered on; the encryption display control method comprises the following steps:
the display screen controller is encrypted and bound with the display screen controller in response to an encryption binding instruction input from the display screen controller, wherein the display screen controller is used for providing input image data;
periodically judging whether a secret key code in a field frequency signal of input image data is successfully matched with a secret key code preset locally;
if the matching is successful, displaying the input image data on a display screen;
and if the matching fails, intercepting the input image data.
8. The encryption display control method according to claim 7, wherein periodically determining whether the key code in the field frequency signal of the input image data is successfully matched with the locally preset key code comprises: and judging whether the key code in each field frequency signal of the input image data is successfully matched with a locally preset key code.
9. The encryption display control method according to claim 7, wherein the intercepting the input image data if the matching fails comprises: and controlling the display screen to be black.
10. The encrypted display control device is characterized by being applied to a display screen control card in an LED display screen control system, and the LED display screen control system also comprises a display screen controller which is connected with the display screen control card and powered up; the encryption display control device includes:
the encrypted binding module is used for responding to an encrypted binding instruction input from the display screen controller to carry out encrypted binding with the display screen controller, wherein the display screen controller is used for providing input image data;
the key matching module is used for periodically judging whether the key codes in the field frequency signals of the input image data are successfully matched with the locally preset key codes or not;
and the display control module is used for displaying the input image data on a display screen when the matching is successful or intercepting the input image data when the matching is failed.
11. A display screen system, comprising: the LED display screen control system comprises a display screen controller and a display screen control card, and the display screen control card is connected with the LED display screen;
the display screen controller is configured to: detecting the value of an encryption flag bit in a register to judge whether encryption output is needed or not, detecting whether the display screen control card is connected and powered on or not, adding a secret key code into a field frequency signal of image data to be output to the display screen control card connected and powered on when the display screen control card is detected to be connected and powered on and encryption output is needed, and sending an encryption binding instruction to the display screen control card connected and powered on so as to enable the display screen control card connected and powered on to carry out encryption binding;
the display screen control card connected with the power supply is used for: after encryption and binding, periodically judging whether a secret key code in a field frequency signal of input image data is successfully matched with a locally preset secret key code, and displaying the input image data on the LED display screen when the matching is successful or intercepting the input image data when the matching is failed.
12. The display screen system of claim 11, wherein the display screen controller is further configured to: and receiving an encryption binding control command of an upper computer, responding to the encryption binding control command, and solidifying parameters in the encryption binding control command to the encryption flag bit in the register.
13. The display screen system of claim 11 or 12, wherein the display screen controller is further configured to: and adding an encryption binding enabling mark in the field frequency signal as the encryption binding instruction, wherein the encryption binding enabling mark is positioned in front of the secret key code in the field frequency signal.
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| CN112825099A (en) * | 2019-11-21 | 2021-05-21 | 西安诺瓦星云科技股份有限公司 | Display module management method, device and system |
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| US7318086B2 (en) * | 2000-11-20 | 2008-01-08 | Flexiworld Technologies, Inc. | System for mobile and pervasive output |
| US7792303B2 (en) * | 2004-07-14 | 2010-09-07 | Intel Corporation | Method of delivering direct proof private keys to devices using a distribution CD |
| TW200635085A (en) * | 2005-01-20 | 2006-10-01 | Barnes Group Inc | LED assembly having overmolded lens on treated leadframe and method therefor |
| CN101009550B (en) * | 2006-01-26 | 2010-11-03 | 中国科学院计算技术研究所 | Data transfer system for digital copyright management |
| CN101533504A (en) * | 2009-04-27 | 2009-09-16 | 刘文祥 | Electric medical affairs system and device |
| CN102355351B (en) * | 2011-07-21 | 2014-11-05 | 华为技术有限公司 | Key generation, backup and migration method and system based on trusted computing |
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| US20130190073A1 (en) * | 2012-01-23 | 2013-07-25 | Futurelogic, Inc. | Networkless ticketing solution |
| CN203276284U (en) * | 2013-06-04 | 2013-11-06 | 天津市天安怡和信息技术有限公司 | Key control system |
| CN103389889B (en) * | 2013-07-19 | 2015-11-25 | 西安诺瓦电子科技有限公司 | The safe player method of LED display and Video Controller |
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