CN107068028B

CN107068028B - Display module and display module detection system

Info

Publication number: CN107068028B
Application number: CN201710399913.9A
Authority: CN
Inventors: 韦桂锋; 李建坤
Original assignee: Xian Novastar Electronic Technology Co Ltd
Current assignee: Xian Novastar Electronic Technology Co Ltd
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2020-12-15
Anticipated expiration: 2037-05-31
Also published as: CN107068028A

Abstract

The embodiment of the invention provides a display module and a display module detection system. The display module comprises at least one display unit plate and a display control device. The display control device comprises a connecting plate and a control card arranged on the connecting plate, the at least one display unit board is connected with the control card through the connecting plate, and the control card is used for reading preset picture data to drive and control the at least one display unit board to display a test picture under the control of an input test instruction. The embodiment of the invention can simplify the complexity of large-screen construction.

Description

Display module and display module detection system

Technical Field

The invention relates to the technical field of display control, in particular to a display module and a display module detection system.

Background

At present when setting up bigger LED display screen, often individual LED display module splices, can only wait like this and all splice going to all LED display module, just can carry out the detection of display screen, and whether the test display screen splices normally, whether every LED display module normally works etc.. Therefore, if one LED display module is damaged in the middle, the LED display module on the LED display module needs to be detached, the damaged LED display module is replaced, and the LED display module is spliced again, so that the LED display module is very troublesome, and the complexity of building a large screen is increased.

Disclosure of Invention

Therefore, the embodiment of the invention provides a display module and a display module detection system to achieve the technical effect of simplifying the complexity of large-screen construction.

In one aspect, a display module is provided, which includes at least one display unit board and a display control device. The display control device comprises a connecting plate and a control card arranged on the connecting plate, the at least one display unit board is connected with the control card through the connecting plate, and the control card is used for reading preset picture data to drive and control the at least one display unit board to display a test picture under the control of an input test instruction.

In an embodiment of the present invention, a wireless adapter plate connector is disposed on the connection plate, the wireless adapter plate connector is used for detachably disposing a wireless adapter plate on the connection plate and forming a connection with the control card, and the wireless adapter plate is used for receiving a remote control command in a wireless manner, analyzing the remote control command, generating the test command, and inputting the test command to the control card.

In one embodiment of the invention, the wireless adapter board connector connects the control card through a serial bus.

In an embodiment of the present invention, the display control device further includes a wireless adapter board disposed on the connection board and connected to the control card; the wireless adapter board comprises a PCB antenna, a radio frequency chip and a microcontroller which are sequentially connected, and the microcontroller is connected with the control card through the connecting board so as to input the test instruction to the control card.

In an embodiment of the invention, the display module is an LED box, the at least one display unit board is an LED lamp board, and the control card is a receiving card and is inserted and fixed on the connecting board.

In another aspect, a display module is provided, which includes at least one display unit board and a display control device. The display control device comprises a connecting plate and a control card arranged on the connecting plate, and the at least one display unit plate is connected with the control card through the connecting plate; the wireless adapter plate connector is arranged on the connecting plate and used for detachably arranging the wireless adapter plate on the connecting plate and is connected with the control card, so that the display control device can be in wireless communication with external equipment.

On the other hand, the provided display module detection system comprises a display control device and a remote controller; the display control device is used for driving and controlling at least one display unit board to display images and comprises a connecting board, a control card and a wireless adapter board, wherein the control card and the wireless adapter board are arranged on the connecting board; the remote controller is used for sending a remote control instruction to the wireless adapter plate, generating a test instruction by the wireless adapter plate according to the remote control instruction, inputting the test instruction to the control card, and reading preset picture data by the control card according to the test instruction to drive and control the at least one display unit plate to carry out test picture display so as to detect whether the at least one display unit plate normally displays.

In one embodiment of the invention, the control card and the wireless adapter board are detachably arranged on the connecting board.

In an embodiment of the present invention, the wireless adapter board includes a PCB antenna, a radio frequency chip and a microcontroller connected in sequence, and the microcontroller is connected to the control card through a serial bus.

In an embodiment of the present invention, the control card is a receiving card for driving and controlling the at least one display unit board to display an image, the at least one display unit board is an LED lamp panel, and a combination of the display control device and the at least one display unit board is an LED box.

In one embodiment of the present invention, the display control device is plural, each of the display control devices being for driving at least one display cell panel; the remote controller is used for sending the remote control command to the plurality of display control devices in a broadcasting mode.

In another aspect, a display module detecting system is provided, which includes: the wireless radio frequency module, the microcontroller, the control circuit, the first network port and the second network port are arranged on the connecting plate; the wireless radio frequency module and the control circuit are respectively connected with the microcontroller, the first network port and the second network port are connected with the control circuit, the first network port is used for being connected with the display module to be detected and used as an output network port to send a test instruction to the display module to be detected so as to control the display module to be detected to read local preset image data for test image display, and the second network port is used for being connected with the display module to be detected and used as an input network port.

In an embodiment of the present invention, the display module detecting system further includes: and the liquid crystal screen is connected with the microcontroller.

In an embodiment of the present invention, the display module detection system includes a wireless adapter plate, which is inserted and fixed on the connection plate; the wireless radio frequency module, the microprocessor and the liquid crystal screen are the components of the wireless adapter plate.

One of the above technical solutions has the following advantages or beneficial effects: the complexity of large-screen construction can be simplified, and simple detection of the display module is realized.

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 schematic block diagram of a display module according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the display control device shown in fig. 1.

Fig. 3 is a schematic structural diagram of a wireless patch panel according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a display module inspection system according to an embodiment of the invention.

Fig. 5 is a schematic diagram of a display module inspection system according to another 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.

Referring to fig. 1, a display module 10 according to an embodiment of the present invention includes: a display unit board 11 and a display control device 13 connected to the display unit board 11. In one embodiment, the display unit board 11 is, for example, an LED lamp board, and the number of the display unit boards is one or more; the display control device 13 includes a receiving card for driving and controlling one LED lamp panel or a plurality of cascaded LED lamp panels to display images, and the receiving card typically includes a programmable logic device such as an FPGA as a data processing module and a network module such as a hundred mega network module connected to the programmable logic device, a data storage module such as an SDRAM, and a display driving circuit such as a 74HC245 chip; accordingly, the display module 10 is an LED display module, or LED box.

Referring to fig. 2, the display control device 13 may specifically include: a connection board 131 (or HUB board) and a control card, such as a receiving card 133, detachably mounted on the connection board 131. Furthermore, the connection board 131 is further provided with a wireless adapter board connector 1311 for detachably disposing the wireless adapter board 135 (shown in fig. 3, for example) on the connection board 131, so that the display control device 13 can support a wireless function; the wireless patch panel connector 1311 is preferably connected to the receiving card 133, such as a wireless patch panel slot, through the connection board 131 via a serial bus (e.g., UART). The receiving card 133 is fixed on the connecting board 131 by pin/female pin arrangement and electrically connected to the display unit board 11 through the connecting board 131, for example, the receiving card 133 of this embodiment is configured with two network ports, one network port is used for connecting a front-end controller (for example, a transmitting card) or a previous-stage display module 10, and the other network port is used for cascading a next-stage display module 10. The connection board 131 is provided with a flat cable interface for connecting the display unit board 11.

Referring to fig. 3, the wireless patch panel 135 includes a PCB antenna 1351, an RF chip 1353, and a microcontroller 1355, which are connected in sequence. The PCB wireless 1351 and the RF chip 1353 constitute a wireless RF module to perform RF communication with the remote controller 15 to receive remote control commands, wherein the communication frequency is, for example, low frequency 433 MHz; the microcontroller 1355 is, for example, a single chip microcomputer, and is connected to the receiving card 133 disposed on the connection board 131 through a serial bus, and configured to parse the remote control command received by the RF chip 1353 and package the remote control command into a data format required by the receiving card 133 to obtain a test command, and send the test command to the receiving card 133, and then the receiving card 133 reads preset picture data from the local memory according to the received test command to drive and control the display unit board 11 to perform test picture display. It is understood here that the various elements of the wireless adapter board 135 may also be provided directly on the connection board 131 as a constituent part thereof, and accordingly the wireless adapter board connector 1311 need not be provided on the connection board 131 as shown in fig. 2.

Fig. 4 is a schematic structural diagram of a display module inspection system according to an embodiment of the present invention. As shown in fig. 4, the remote controller 15 may send a remote control command to the display control devices 13 of the plurality of display modules 10 in a broadcast manner, so as to trigger the display control devices 13 to drive and control the respective display unit boards 11 to perform test picture display. Furthermore, in the embodiment shown in fig. 4, the display control device 13 of the display module 10 serves as a component of both the display module inspection system and the display module to be inspected. In addition, it can be understood that, when a large screen is built on site, when a line of display modules 10 is built, the line of display modules 10 is powered on, the remote controller 15 is turned on, and the remote controller 15 is used to send a remote control command in a broadcast manner, at this time, the receiving card 133 on the display control device 13 of each display module 10 receives a corresponding test command, and displays a specific test picture on the display unit board 11 according to the received test command, for example, pictures such as full brightness, full red, full green, full blue, white oblique lines, white straight lines, and the like are displayed on the display unit board 11; therefore, the purpose of detecting the quality of the display unit plate 11 can be achieved, so that the bad display unit plate 11 can be found early, and the purpose of replacing the bad display unit plate 11 early can be achieved.

It should be noted that, in order to increase the security of the system, it may be designed that the password input operation is necessary before any operation is performed by using the remote controller 15, and the operation authority of the current user is distinguished by the password identification operation.

Further, since the communication between the remote controller 15 and the display control device 13 employs a broadcast mechanism, there may be a case where: one large display screen is arranged on the site, one large display screen is already built and displays the content in normal playing, and the other large display screen is being built; at this time, if the remote control command is transmitted in a broadcast manner, the display of the display screen normally displayed nearby is disordered. Therefore, the present embodiment preferably designs two commands, which are respectively used to switch the wireless path, that is, switch the output of the wireless adapter board 135; after the display screen is built, the operation of closing the wireless access is required to be sent once, if the user needs to perform wireless operation next time, the wireless access opening instruction must be sent first, and the wireless access is in a closed state by default. The function of closing and opening the wireless path is implemented on the wireless adapter board 135, if the wireless path opening instruction is received, all the instructions sent after that are packed and sent to the receiving card 133, and if the wireless path closing instruction is received, all the instructions after that are not sent to the receiving card 133, and the wireless adapter board 135 directly discards the packet data.

Referring to fig. 5, a display module detecting system 50 according to another embodiment of the present invention includes: a connection board 51 (or HUB board), and a radio frequency module 52, a microcontroller 53, a liquid crystal display 54, a control circuit 55 and two

network ports

56a and 56b arranged on the connection board 51. The radio frequency module 52 is configured to perform radio frequency communication with the remote controller 57, and the operating frequency thereof is, for example, low frequency 433 MHz; the radio frequency module 52 may be a module including a PCB antenna and a radio frequency chip. The microcontroller 53 is electrically connected to a radio frequency module 52, which is, for example, a single chip Microcomputer (MCU). The liquid crystal screen 54 is electrically connected to the microcontroller 53. The control circuit 55 is electrically connected to the

net ports

56a and 56b, and includes, for example, a programmable logic device such as an FPGA or the like. The net port 56a and the net port 56b are respectively used as an output net port and an input net port, so that the display module 60 to be detected, such as an LED box, is connected between the two to form a loop. Of course, the number of the display modules 60 to be detected connected between the

net ports

56a and 56b may be one, or may be a plurality of display modules cascaded together.

The embodiment shown in fig. 5 can be added with an automatic control mode in addition to a manual control mode using a remote controller, so that the detection control of the display module 60 is more convenient and faster. The method comprises the following specific steps:

(1) manual control mode: the manual control detection is performed by the remote controller 57, and the data flow direction in the whole control process is as follows: the starting source of the data is the remote controller 57, the remote control instruction sent by the remote controller 57 firstly reaches the wireless radio frequency module 52 on the connecting plate 51, the wireless radio frequency module 52 transmits the received instruction data to the microcontroller 53, the microcontroller 53 analyzes and converts the protocol of the instruction data, after the data is organized, the data is transmitted to the control circuit 55 through a serial bus interface such as an SPI interface, an FPGA in the control circuit 55 generates a test instruction according to the received data and transmits the test instruction to a control card such as a receiving card of the display module to be detected 60 through the network port 56 a;

(2) an automatic control mode: the control circuit 55 in the display module detection system 50 is always in a circulating state to send out various test instructions through the network port 56a without the participation of the remote controller 57, and the test instructions prompt the display module 60 to be detected to continuously display various test pictures. The display module inspection system 50 may be in an automatic control mode by default, and when the display module inspection system is to be changed to a manual control mode, the display module inspection system may be switched to the manual control mode by using the remote controller 57.

As mentioned above, the net port 56a is used as an output net port and the net port 56b is used as an input net port, which can form a loop even if there is only one display module 60 to be detected, such as an LED box, so as to achieve the purpose of testing each net port on the receiving card in the display module 60 to be detected. Further, the error rate may be calculated by comparing the data input through the port 56b and the data output through the port 56a, and by varying the degree of data input and output.

In addition, the detection result and the calculated error rate may be displayed on the liquid crystal panel 54 in real time to inform the user of the current detection result.

Finally, it should be noted that the display module detection system 50 of the embodiment shown in fig. 5 does not need to redesign the display control device, such as a connection board, in the existing display module, and the display module detection system 50 is used as a detection device independent of the display module 60 to be detected.

In conclusion, the embodiment of the invention solves the trouble of building a large screen on site, and can realize simple detection of each display module. Moreover, the detachable design of the wireless adapter plate facilitates the display control device to support a wireless communication mode. In addition, it should be noted that the lcd 54 is not limited to be directly disposed on the connection board 51, and an external display mode may also be adopted; the radio frequency module 52, the microprocessor 53 and the liquid crystal panel 54 may be detachably provided on the connection board 51 as a constituent part of the radio adapter board.

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

1. A display module comprises at least one display unit board and a display control device; the display control device is characterized by comprising a connecting plate and a control card arranged on the connecting plate, wherein the at least one display unit plate is connected with the control card through the connecting plate, and the control card is used for reading preset picture data to drive and control the at least one display unit plate to display a test picture under the control of an input test instruction;

the display control device further comprises a wireless adapter plate which is arranged on the connecting plate and is connected with the control card, the wireless adapter plate comprises a wireless radio frequency module and a microcontroller which are sequentially connected, the microcontroller is used for analyzing a remote control instruction received by the wireless radio frequency module and packaging the remote control instruction into a data format required by the control card so as to obtain a test instruction, and the test instruction is sent to the control card, and the control card reads the preset picture data from a local memory according to the test instruction to drive and control the at least one display unit plate to display the test picture;

the wireless adapter plate connector is arranged on the connecting plate and used for detachably arranging the wireless adapter plate on the connecting plate and forming connection with the control card.

2. The display module of claim 1, wherein the wireless adapter board connector is connected to the control card via a serial bus.

3. The display module as claimed in claim 1, wherein the wireless radio frequency module comprises a PCB antenna and a radio frequency chip connected in sequence, and the radio frequency chip is connected to the microcontroller.

4. The display module according to claim 1, wherein the display module is an LED box, the at least one display unit board is an LED lamp panel, and the control card is a receiving card and is fixedly inserted into the connecting board.

5. A display module detection system is characterized by comprising a display control device and a remote controller; the display control device is used for driving and controlling at least one display unit board to display images, and comprises a connecting board, a control card and a wireless adapter board, wherein the control card and the wireless adapter board are arranged on the connecting board; the remote controller is used for sending a remote control instruction to the wireless adapter plate, generating a test instruction by the wireless adapter plate according to the remote control instruction, inputting the test instruction to the control card, and reading preset picture data by the control card according to the test instruction to drive and control the at least one display unit plate to carry out test picture display so as to detect whether the at least one display unit plate normally displays;

the wireless adapter board comprises a wireless radio frequency module and a microcontroller which are sequentially connected, the microcontroller is used for analyzing the remote control instruction received by the wireless radio frequency module and packaging the remote control instruction into a data format required by the control card to obtain the test instruction and sending the test instruction to the control card, and the control card reads the preset picture data from a local memory according to the test instruction to drive and control the at least one display unit board to display the test picture;

6. The display module detection system of claim 5, wherein the control card is detachably disposed on the connection board.

7. The display module detection system of claim 5, wherein the wireless RF module comprises a PCB antenna and a RF chip connected in sequence, the RF chip is connected to the microcontroller, and the microcontroller is connected to the control card through a serial bus.

8. The display module detection system of claim 5, wherein the control card is a receiving card for driving and controlling the at least one display unit board to display images, the at least one display unit board is an LED lamp panel, and the combination of the display control device and the at least one display unit board is an LED box body.

9. The display module detection system of claim 5, wherein the display control devices are plural, each of the display control devices being configured to drive at least one display cell panel; the remote controller is used for sending the remote control command to the plurality of display control devices in a broadcasting mode.