LED display screen control device, system and method

Abstract

The present invention provides an LED display screen control device, system and method, wherein the control device comprises: a receiving module, which is used to receive a video signal and send it to a processing module, wherein the video signal contains authorization information; a processing module, which is used to read the authorization information in the video signal and calculate the remaining authorization time, and if the remaining authorization time is sufficient, then add a descrambling instruction to the video signal and forward it to the display module, and if the remaining authorization time is used up, then send a black screen signal containing a descrambling instruction to the display module; and a display module, which is used to drive the display element to work according to the video signal containing the descrambling instruction or the black screen signal. The present invention can better perform authorization management on the LED display screen.

Description

Technical Field

[0001] The present invention relates to the field of information technology, and in particular to a device, system and method for controlling an LED display screen. Background Art

[0002] In the prior art, the authorized usage time management of LED display screens (commonly known as anti-overdue management) is generally implemented by using the dongle provided by the control system in conjunction with the timing function provided by the host. When the remaining authorization is used up, the control system will stop the use of the LED display screen. Through actual testing, it is found that this management method is not stable enough, and the anti-overdue function can be disabled by replacing the main controller and the sub-control card. Therefore, it is urgent to propose a new way to effectively manage LED display screens. Summary of the invention

[0003] In view of this, the first object of the present invention is to provide a LED display screen control device, which can better perform authorization management on the LED display screen.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A LED display screen control device, comprising:

[0006] A receiving module, used for receiving a video signal and sending it to a processing module, wherein the video signal includes authorization information;

[0007] A processing module is used to read the authorization information in the video signal and calculate the remaining authorization time. If the remaining authorization time is sufficient, a descrambling instruction is added to the video signal and then forwarded to the display module. If the remaining authorization time is used up, a black screen signal containing a descrambling instruction is sent to the display module.

[0008] And a display module is used for driving the display element to work according to the video signal containing the descrambling instruction or the black screen signal.

[0009] Preferably, the display module includes a plurality of driver ICs connected in series and at least one descrambling IC, wherein the descrambling IC is connected in series between two adjacent driver ICs; the video signal or black screen signal containing the descrambling instruction is transmitted in sequence between the driver IC and the descrambling IC; the descrambling IC is configured to perform descrambling processing on the video signal or black screen signal according to the descrambling instruction and then transmit it to the subsequent driver IC.

[0010] Preferably, the processing module includes an MCU module and an FPGA module, the MCU is used to read the authorization information in the video signal and calculate the remaining authorization time, and send corresponding control information to the FPGA module according to the remaining authorization time; the FPGA module decides to send a video signal containing a descrambling instruction or a black screen signal to the display module according to the received control information.

[0011] Preferably, the processing module, the receiving module and the display module are connected by a universal pluggable signal interface.

[0012] The second object of the present invention is to provide a LED display screen control system that can better perform authorization management on the LED display screen.

[0013] In order to solve the above technical problems, the technical solution of the present invention is:

[0014] A LED display screen control system, comprising a plurality of LED display screen control devices as described in any one of claims 1 to 4 and at least one sending module, wherein the receiving modules in the plurality of LED display screen control devices are connected in series in sequence; the sending module is connected to the first of the plurality of receiving modules to send a video signal thereto, and the first receiving module also forwards the received video signal to a subsequent receiving module.

[0015] The third object of the present invention is to provide a method for controlling an LED display screen, which can better perform authorization management on the LED display screen.

[0016] In order to solve the above technical problems, the technical solution of the present invention is:

[0017] A method for controlling an LED display screen, comprising:

[0018] The receiving module receives the video signal and sends it to the processing module, wherein the video signal includes authorization information;

[0019] The processing module reads the authorization information in the video signal and calculates the remaining authorization time. If the remaining authorization time is sufficient, a descrambling instruction is added to the video signal and then forwarded to the display module. If the remaining authorization time is used up, a black screen signal containing a descrambling instruction is sent to the display module.

[0020] The display module drives the display element to work according to the video signal containing the descrambling instruction or the black screen signal.

[0021] Preferably, the display module drives the display element to work according to the video signal or black screen signal containing the descrambling instruction, specifically including:

[0022] Connecting at least one descrambling IC in series between two adjacent driver ICs among the plurality of driver ICs connected in series;

[0023] The video signal or black screen signal containing the descrambling instruction is transmitted sequentially between the driving IC and the descrambling IC;

[0024] The descrambling IC performs descrambling processing on the video signal or the black screen signal according to the descrambling instruction and then transmits it to the subsequent driving IC.

[0025] The technical effects of the present invention are mainly reflected in the following aspects:

[0026] 1. Abandoning the traditional technology of only using the controller timing method for authorization management, instead use the MCU module, FPGA module and descrambling IC to achieve normal control of the display screen;

[0027] 2. By adopting the above method, the whole system is difficult and costly to be cracked, thus being able to effectively reduce the cracking behavior of display screen users. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a module diagram of the LED display screen control system in the embodiment;

[0029] Figure 2 FIG. 4 is a module diagram showing modules in the embodiment.

[0030] Figure numerals: 10, sending module; 20, LED display screen control device; 21, receiving module; 22, processing module; 23, display module. DETAILED DESCRIPTION

[0031] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0032] Reference Figure 1 This embodiment provides a LED display control system, including at least one sending 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.

[0033] The receiving module 21 adopts the structure form of a video signal receiving card, which is used to receive the video signal and send it to the processing module 22. The video signal contains authorization information. The receiving modules 21 between different LED display screen control devices 20 are connected in series in sequence, that is, the sending module 10 is connected to the first of several receiving modules 21 to send the video signal to it, and the first receiving module 21 also forwards the received video signal to the receiving module 21 of the subsequent stage.

[0034] The processing module 22 adopts the structural form of a hub card, which is used to read the authorization information in the video signal and calculate the remaining authorization time. If the remaining authorization time is sufficient, the video signal is forwarded to the display module 23 after adding a descrambling instruction. If the remaining authorization time is used up, a black screen signal containing a descrambling instruction is sent to the display module 23. Specifically, the processing module 22 includes an MCU module and an FPGA module. The MCU is used to read the authorization information in the video signal and calculate the remaining authorization time, and send corresponding control information to the FPGA module according to the remaining authorization time; the FPGA module decides to send a video signal containing a descrambling instruction or a black screen signal to the display module 23 according to the received control information.

[0035] The display module 23 is used to drive the display element to work according to the video signal or black screen signal containing the descrambling instruction; specifically, the display module 23 includes a plurality of serially connected driver ICs and at least one descrambling IC, and the descrambling IC is serially connected between two adjacent driver ICs. The video signal or black screen signal containing the descrambling instruction is transmitted in sequence between the driver IC and the descrambling IC; the descrambling IC is configured to perform descrambling processing on the video signal or black screen signal according to the descrambling instruction and then transmit it to the subsequent driver IC.

[0036] The above processing module 22, receiving module 21 and display module 23 are connected by a universal pluggable signal interface.

[0037] Embodiment 2

[0038] On the basis of the first embodiment, this embodiment further provides a method for controlling an LED display screen, the method comprising:

[0039] S01, the receiving module 21 receives the video signal and sends it to the processing module 22, the video signal contains authorization information;

[0040] The video signal is sent from the sending module 10 to the first receiving module 21 , and the first receiving module 21 then forwards the video signal to another receiving module 21 , and the video signal is transmitted step by step in this way.

[0041] S02, the processing module 22 reads the authorization information in the video signal and calculates the remaining authorization time. Specifically, the MCU reads the authorization information in the video signal and calculates the remaining authorization time, and sends corresponding control information to the FPGA module according to the remaining authorization time, that is, if the remaining authorization time is sufficient, then the video signal is forwarded to the display module 23 after adding a descrambling instruction. If the remaining authorization time is used up, a black screen signal containing a descrambling instruction is sent to the display module 23. The FPGA module decides to send a video signal containing a descrambling instruction or a black screen signal to the display module 23 according to the received control information.

[0042] S03, the display module 23 drives the display element to work according to the video signal containing the descrambling instruction or the black screen signal;

[0043] Specifically, the video signal or black screen signal containing the descrambling instruction is transmitted in sequence between the driver IC and the descrambling IC; the descrambling IC is configured to perform descrambling processing on the video signal or black screen signal according to the descrambling instruction before transmitting it to the subsequent driver IC. The signal channel inside the descrambling IC is not arranged in the conventional RGB signal order, but in a disrupted order. Therefore, after the normal (unscrambled) RGB signal passes through the descrambling IC, if it is not descrambled and transmitted to the subsequent driver IC, the signal is in a disordered state, causing the area corresponding to the subsequent driver IC to display abnormal content.

[0044] Therefore, if the user skips the hub card and directly connects the screen with the receiving card, the image cannot be displayed normally due to the special design of the display module 23. This solves the problem of failure of the anti-overdue function of the existing solution (replacing the controller and the receiving card).

[0045] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A LED display screen control device, characterized in that ,include: A receiving module (21) is used to receive a video signal and send it to a processing module (22), wherein the video signal includes authorization information; A processing module (22) is used to read the authorization information in the video signal to calculate the remaining authorization time. If the remaining authorization time is sufficient, a descrambling instruction is added to the video signal and then forwarded to the display module (23). If the remaining authorization time is used up, a black screen signal containing the descrambling instruction is sent to the display module (23); and a display module (23), used for driving the display element to work according to the video signal containing the descrambling instruction or the black screen signal; The display module (23) comprises a plurality of serially connected driver ICs and at least one descrambling IC, wherein the descrambling IC is serially connected between two adjacent driver ICs; the video signal or black screen signal containing the descrambling instruction is sequentially transmitted between the driver IC and the descrambling IC; the descrambling IC is configured to perform descrambling processing on the video signal or black screen signal according to the descrambling instruction and then transmit the descrambling signal to the subsequent driver IC; The signal channels inside the descrambling IC are not arranged in the conventional RGB signal order, but in a disrupted order.

2. The LED display screen control device according to claim 1, characterized in that The processing module (22) includes an MCU module and an FPGA module, wherein the MCU is used to read the authorization information in the video signal to calculate the remaining authorization time, and send corresponding control information to the FPGA module according to the remaining authorization time; the FPGA module decides to send a video signal containing a descrambling instruction or a black screen signal to the display module (23) according to the received control information.

3. The LED display screen control device according to claim 1, characterized in that The processing module (22), the receiving module (21) and the display module (23) are connected by a universal pluggable signal interface.

4. A LED display screen control system, characterized in that , comprising a plurality of LED display screen control devices (20) as described in any one of claims 1 to 3 and at least one sending module (10), wherein the receiving modules (21) in the plurality of LED display screen control devices (20) are connected in series in sequence; the sending module (10) is electrically connected to the first of the plurality of receiving modules (21) to send a video signal thereto, and the first receiving module (21) also forwards the received video signal to a subsequent receiving module (21).

5. A method for controlling an LED display screen, characterized in that ,include: The receiving module (21) receives the video signal and sends it to the processing module (22), wherein the video signal includes authorization information; The processing module (22) reads the authorization information in the video signal to calculate the remaining authorization time. If the remaining authorization time is sufficient, a descrambling instruction is added to the video signal and then forwarded to the display module (23). If the remaining authorization time 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 containing the descrambling instruction or the black screen signal; The display module (23) drives the display element to work according to the video signal containing the descrambling instruction or the black screen signal, specifically comprising: Connecting at least one descrambling IC in series between two adjacent driver ICs among the plurality of driver ICs connected in series; The video signal or black screen signal containing the descrambling instruction is transmitted sequentially 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 it to the subsequent driving IC; The signal channels inside the descrambling IC are not arranged in the conventional RGB signal order, but in a disrupted order.

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