CN116052587A - LED display screen control device, system and method - Google Patents

LED display screen control device, system and method Download PDF

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Publication number
CN116052587A
CN116052587A CN202310201465.2A CN202310201465A CN116052587A CN 116052587 A CN116052587 A CN 116052587A CN 202310201465 A CN202310201465 A CN 202310201465A CN 116052587 A CN116052587 A CN 116052587A
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CN
China
Prior art keywords
video signal
module
descrambling
signal
black screen
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Pending
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CN202310201465.2A
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Chinese (zh)
Inventor
卢伟
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Shenzhen Lixiang Huike Optoelectronics Technology Co ltd
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Shenzhen Lixiang Huike Optoelectronics Technology Co ltd
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Priority to CN202310201465.2A priority Critical patent/CN116052587A/en
Publication of CN116052587A publication Critical patent/CN116052587A/en
Pending legal-status Critical Current

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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]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention provides a control device, a system and a method for an LED display screen, wherein the control device comprises: the receiving module is used for receiving the video signal and sending the video signal to the processing module, wherein the video signal contains authorization information; the processing module is used for reading the authorization information in the video signal and calculating the authorization residual duration, if the authorization residual duration is enough, adding a descrambling instruction to the video signal and then forwarding the descrambling instruction to the display module, and if the authorization residual is used up, sending a black screen signal containing the descrambling instruction to the display module; and the display module is used for driving the display element to work according to the video signal or the black screen signal containing the descrambling instruction. The invention can better carry out authorization management on the LED display screen.

Description

LED display screen control device, system and method
Technical Field
The invention relates to the technical field of information, in particular to an LED display screen control device, an LED display screen control system and an LED display screen control method.
Background
In the prior art, for the authorized use time long pipe (commonly called overdue prevention management) of the LED display screen, a dongle with a control system is generally used to cooperate with a host to realize the self-timer function, and when the authorized residual use is finished, the control system stops the use authority of the LED display screen. Through practical tests, the management method is not stable enough, and the overdue prevention function can be disabled by replacing the main controller and the sub-control card. Therefore, a new way to effectively manage the LED display screen is needed.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide an LED display control device, which can better perform authorization management on an LED display.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an LED display screen control device, comprising:
the receiving module is used for receiving the video signal and sending the video signal to the processing module, wherein the video signal contains authorization information;
the processing module is used for reading the authorization information in the video signal and calculating the authorization residual duration, if the authorization residual duration is enough, adding a descrambling instruction to the video signal and then forwarding the descrambling instruction to the display module, and if the authorization residual is used up, sending a black screen signal containing the descrambling instruction to the display module;
and the display module is used for driving the display element to work according to the video signal or the black screen signal containing the descrambling instruction.
Preferably, the display module comprises a plurality of drive ICs connected in series and at least one descrambling IC connected in series between two adjacent drive ICs; the video signal or the black screen signal containing the descrambling instruction is sequentially transmitted between the driving IC and the descrambling IC; the descrambling IC is configured to descramble the video signal or the black screen signal according to the descrambling instruction and then transmit the descrambled video signal or the black screen signal to a driving IC at a later stage.
Preferably, the processing module comprises an MCU module and an FPGA module, wherein the MCU is used for reading the authorization information in the video signal, calculating the authorization residual duration and sending corresponding control information to the FPGA module according to the situation of the authorization residual duration; and the FPGA module decides to send video signals or black screen signals containing descrambling instructions to the display module according to the received control information.
Preferably, the processing module, the receiving module and the display module are connected by adopting a universal pluggable signal interface.
The second purpose of the invention is to provide an LED display screen control system which can better carry out authorization management on an LED display screen.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an LED display control system comprising a plurality of LED display control devices according to any one of claims 1 to 4 and at least one transmitting module, wherein receiving modules in the plurality of LED display control devices are sequentially connected in series; the transmitting module is connected with the first receiving module in a plurality of receiving modules to transmit video signals to the first receiving module, and the first receiving module also forwards the received video signals to the receiving module at the later stage.
The third object of the invention is to provide a control method of an LED display screen, which can better carry out authorization management on the LED display screen.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method of controlling an LED display screen, comprising:
the receiving module receives a video signal and sends the video signal to the processing module, wherein the video signal contains authorization information;
the processing module reads the authorization information in the video signal and calculates the remaining authorization time, if the remaining authorization time is enough, a descrambling instruction is added to the video signal and then the video signal is forwarded to the display module, and if the remaining authorization is used up, a black screen signal containing the descrambling instruction is sent to the display module;
the display module drives the display element to work according to the video signal or the black screen signal containing the descrambling instruction.
Preferably, the display module drives the display element to work according to a video signal or a black screen signal containing a descrambling instruction, and specifically includes:
connecting at least one descrambling IC in series between two adjacent driving ICs in the plurality of driving ICs connected in series;
the video signal or the black screen signal containing the descrambling instruction is sequentially transmitted between the driving IC and the descrambling IC;
the descrambling IC performs descrambling processing on the video signal or the black screen signal according to the descrambling instruction and then transmits the video signal or the black screen signal to the driving IC at the later stage.
The technical effects of the invention are mainly as follows:
1. the method of carrying out authorization management by adopting a controller timing mode in the traditional technology is abandoned, and the normal control of the display screen is realized by adopting the matching of an MCU module, an FPGA module and a descrambling IC;
2. by adopting the mode, the whole system is difficult to crack and has high cost, so that the cracking behavior of a display screen user can be effectively reduced.
Drawings
FIG. 1 is a block diagram of an LED display control system in an embodiment;
fig. 2 is a block diagram of a display module in an embodiment.
Reference numerals: 10. a transmitting module; 20. LED display screen control device; 21. a receiving module; 22. a processing module; 23. and a display module.
Detailed Description
The following detailed description of the invention is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the invention.
Referring to fig. 1, the present embodiment provides an LED display control system, which includes at least one transmitting module 10 and a plurality of LED display control devices 20; the LED display control device 20 includes a receiving module 21, a processing module 22, and a display module 23.
The receiving module 21 is in the form of a video signal receiving card, and is configured to receive a video signal, and send the video signal to the processing module 22, where the video signal includes authorization information. The receiving modules 21 between different LED display screen control devices 20 are sequentially connected in series, that is: the transmitting module 10 is connected to a first one of the plurality of receiving modules 21 to transmit a video signal thereto, and the first receiving module 21 also forwards the received video signal to the receiving module 21 of the subsequent stage.
The processing module 22 adopts a hub card construction form, and is used for reading the authorization information in the video signal and calculating the remaining authorization time, if the remaining authorization time is enough, adding a descrambling instruction to the video signal and then forwarding the descrambling instruction to the display module 23, and if the remaining authorization is used up, sending a black screen signal containing the descrambling instruction to the display module 23. Specifically, the processing module 22 includes an MCU module and an FPGA module, where the MCU is configured to read the authorization information in the video signal and calculate the remaining authorization time length, and send corresponding control information to the FPGA module according to the remaining authorization time length; the FPGA module decides to send a video signal or a black screen signal containing a descrambling instruction to the display module 23 according to the received control information.
The display module 23 is used for driving the display element to work according to the video signal or the black screen signal containing the descrambling instruction; specifically, the display module 23 includes a plurality of driver ICs connected in series and at least one descrambling IC connected in series between two adjacent driver ICs. Video signals or black screen signals containing descrambling instructions are sequentially transmitted between the driving IC and the descrambling IC; the descrambling IC is configured to descramble the video signal or the black screen signal according to the descrambling instruction and then transmit the descrambled video signal or the black screen signal to a driving IC at a later stage.
The processing module 22, the receiving module 21 and the display module 23 are connected by adopting a universal pluggable signal interface.
Embodiment II,
On the basis of the first embodiment, the present embodiment further provides a method for controlling an LED display screen, where the method includes:
s01, the receiving module 21 receives a video signal and sends the video signal to the processing module 22, wherein the video signal contains authorization information;
the video signal is sent from the sending module 10 to the first receiving module 21, and the first receiving module 21 forwards the video signal to the other receiving module 21 again, so that the video signal is transferred step by step.
S02, the processing module 22 reads the authorization information in the video signal and calculates the authorization remaining time, specifically, the MCU reads the authorization information in the video signal and calculates the authorization remaining time, and sends corresponding control information to the FPGA module according to the situation of the authorization remaining time, namely: if the remaining authorization time is enough, adding a descrambling instruction to the video signal and then forwarding the descrambling instruction to the display module 23, and if the remaining authorization time is up, sending a black screen signal containing the descrambling instruction to the display module 23. The FPGA module decides to send a video signal or a black screen signal containing a descrambling instruction to the display module 23 according to the received control information.
S03, the display module 23 drives the display element to work according to the video signal or the black screen signal containing the descrambling instruction;
specifically, a video signal or a black screen signal containing a descrambling instruction is sequentially transferred between the driving IC and the descrambling IC; the descrambling IC is configured to descramble the video signal or the black screen signal according to the descrambling instruction and then transmit the descrambled video signal or the black screen signal to a driving IC at a later stage. The signal channels inside the descrambling IC are not arranged in the conventional RGB signal arrangement order, but are arranged in a disordered order, so that after the normal (unscrambled) RGB signals are transmitted through the descrambling IC, if the signals are not transmitted to the driving IC of the subsequent stage through the descrambling process, the signals are in a disordered state, so that the abnormal contents are displayed in the area corresponding to the driving IC of the subsequent stage.
Therefore, if the user skips the hub card, the screen is directly connected with the receiving card, and the image is not normally displayed because of the special design of the display module 23. Thereby solving the problem of overdue function failure of the existing scheme (replacing the controller and the receiving card).
Of course, the above is only a typical example of the invention, and other embodiments of the invention are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the invention claimed.

Claims (7)

1. An LED display screen control device, comprising:
a receiving module (21) for receiving a video signal and sending the video signal to a processing module (22), wherein the video signal contains authorization information;
the processing module (22) is used for reading the authorization information in the video signal and calculating the remaining authorization time, if the remaining authorization time is enough, adding a descrambling instruction to the video signal and then forwarding the descrambling instruction to the display module (23), and if the remaining authorization is used up, sending a black screen signal containing the descrambling instruction to the display module (23);
and a display module (23) for driving the display element to operate according to the video signal or the black screen signal containing the descrambling instruction.
2. An LED display screen control device according to claim 1, characterized in that the display module (23) comprises several driver ICs in series and at least one descrambling IC in series between two adjacent driver ICs; the video signal or the black screen signal containing the descrambling instruction is sequentially transmitted between the driving IC and the descrambling IC; the descrambling IC is configured to descramble the video signal or the black screen signal according to the descrambling instruction and then transmit the descrambled video signal or the black screen signal to a driving IC at a later stage.
3. The LED display screen control device according to claim 1, wherein the processing module (22) comprises an MCU module and an FPGA module, the MCU is configured to read the authorization information in the video signal and calculate the remaining authorization time length, and send corresponding control information to the FPGA module according to the remaining authorization time length; and the FPGA module decides to send video signals or black screen signals containing descrambling instructions to the display module (23) according to the received control information.
4. The LED display screen control device according to claim 1, wherein the processing module (22), the receiving module (21) and the display module (23) are connected by a universal pluggable signal interface.
5. An LED display control system, comprising a plurality of LED display control devices (20) according to any one of claims 1-4 and at least one transmitting module (10), wherein receiving modules (21) in the plurality of LED display control devices (20) are sequentially connected in series; the transmitting module (10) is connected with a first receiving module (21) to transmit video signals to the first receiving module, and the first receiving module (21) also forwards the received video signals to a receiving module (21) at a later stage.
6. The LED display screen control method is characterized by comprising the following steps:
the receiving module (21) receives a video signal and sends the video signal to the processing module (22), wherein the video signal contains authorization information;
the processing module (22) reads the authorization information in the video signal and calculates the remaining authorization time, if the remaining authorization time is enough, a descrambling instruction is added to the video signal and then the video signal is forwarded to the display module (23), and if the remaining authorization is used up, a black screen signal containing the descrambling instruction is sent to the display module (23);
the display module (23) drives the display element to work according to the video signal or the black screen signal containing the descrambling instruction.
7. The LED display screen control method according to claim 6, wherein said display module (23) drives the display element to operate according to the video signal or the black screen signal containing the descrambling instruction, specifically comprising:
connecting at least one descrambling IC in series between two adjacent driving ICs in the plurality of driving ICs connected in series;
the video signal or the black screen signal containing the descrambling instruction is sequentially transmitted between the driving IC and the descrambling IC;
the descrambling IC performs descrambling processing on the video signal or the black screen signal according to the descrambling instruction and then transmits the video signal or the black screen signal to the driving IC at the later stage.
CN202310201465.2A 2023-02-23 2023-02-23 LED display screen control device, system and method Pending CN116052587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310201465.2A CN116052587A (en) 2023-02-23 2023-02-23 LED display screen control device, system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310201465.2A CN116052587A (en) 2023-02-23 2023-02-23 LED display screen control device, system and method

Publications (1)

Publication Number Publication Date
CN116052587A true CN116052587A (en) 2023-05-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310201465.2A Pending CN116052587A (en) 2023-02-23 2023-02-23 LED display screen control device, system and method

Country Status (1)

Country Link
CN (1) CN116052587A (en)

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