CN111081184A - Display screen controller, display system, core board and display box - Google Patents
Display screen controller, display system, core board and display box Download PDFInfo
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- CN111081184A CN111081184A CN201811222598.3A CN201811222598A CN111081184A CN 111081184 A CN111081184 A CN 111081184A CN 201811222598 A CN201811222598 A CN 201811222598A CN 111081184 A CN111081184 A CN 111081184A
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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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Abstract
The embodiment of the invention discloses a display screen controller, a display system, a core board and a display box body. The display screen controller includes, for example: the core board is provided with a first plug-in component, a programmable logic device, a microcontroller, a video decoder and a multi-path Ethernet PHY (physical layer), wherein the microcontroller is connected with the programmable logic device, the video decoder is connected between the first plug-in component and the programmable logic device, and the multi-path Ethernet PHY is connected between the programmable logic device and the first plug-in component; and the adapter plate is provided with a second plug-in component, a video input interface and a multi-path network port, and the video input interface and the multi-path network port are respectively connected with the second plug-in component. The core board and the adapter board are connected electrically through the first plug-in component and the second plug-in component in a plug-in mode, the video input interface is connected to the video decoder through the second plug-in component and the first plug-in component, and the multi-path Ethernet PHY is connected to the multi-path network port through the first plug-in component and the second plug-in component respectively.
Description
Technical Field
The invention relates to the technical field of display control, in particular to a display screen controller, a display system, a core board and a display box body.
Background
The sending card (also called display screen controller) among traditional LED display screen control system is mostly send the box, independently places outside the box, is connected through the net twine and receiving card (or called scanning card, display control card), and the lamp plate is connected through the winding displacement to the receiving card, and the lamp plate cascades and constitutes the box, and a large-scale display screen is constituteed to a plurality of boxes. In the whole control system, the sending card plays a role of sending the video signal processing of the video source to the receiving card. In such a conventional control system, the sending card has a fixed size, cannot be directly installed in the box, and often needs a long network cable to connect with the receiving card. In addition, in the aspect of reliability, most of the traditional sending cards only have one path of input of video sources, and do not have loop-out of signals, especially in some important occasions, unpredictable influence and loss can be caused by sudden conditions of display screens, and the system reliability is poor.
Disclosure of Invention
Embodiments of the present invention provide a display screen controller, a display system, a core board, and a display box, which may achieve the technical effects of reducing the size of a board card and/or improving the reliability of the system.
In one aspect, an embodiment of the present invention provides a display screen controller, including: the core board is provided with a first plug-in component, a programmable logic device, a microcontroller, a video decoder and a multi-path Ethernet PHY (physical layer), wherein the microcontroller is connected with the programmable logic device, the video decoder is connected between the first plug-in component and the programmable logic device, and the multi-path Ethernet PHY is connected between the programmable logic device and the first plug-in component; the adapter plate is provided with a second plug-in component, a video input interface and a multi-path network port, and the video input interface and the multi-path network port are respectively connected with the second plug-in component; the core board and the adapter board are connected electrically through the first plug-in component and the second plug-in component in a plug-in mode, the video input interface is connected to the video decoder through the second plug-in component and the first plug-in component, and the multi-path Ethernet PHY is connected to the multi-path network port through the first plug-in component and the second plug-in component respectively.
In an embodiment of the present invention, the video input interface includes a video main input interface and a video backup input interface, and the video main input interface and the video backup input interface are connected to the same video decoder through the second connector assembly and the first connector assembly.
In an embodiment of the present invention, the core board is further provided with a video encoder and a video distributor, and the adapter board is further provided with a multi-channel video loop-out interface; the video encoder is connected with the video decoder, and the video distributor is connected between the video encoder and the first plug-in component; the multi-video loop-out interface connects the second connector assembly to connect to the video distributor through the second connector assembly and the first connector assembly.
In an embodiment of the present invention, the adapter plate is further provided with multiple paths of first serial ports and multiple paths of second serial ports; the multi-path first serial port is connected with the second plug assembly, so that the multi-path first serial port is connected to a one-path serial port of the microcontroller through the second plug assembly, the first plug assembly and the programmable logic device; the multi-path second serial port is connected with the second plug-in component, so that the multi-path second serial port is connected to the other path of serial port of the microcontroller through the second plug-in component, the first plug-in component and the programmable logic device.
In an embodiment of the present invention, the adapter board is further provided with an audio input interface, an audio decoding circuit, an audio output interface and an audio encoding circuit; the audio decoding circuit is connected between the audio input interface and the second connector assembly so as to be connected to the programmable logic device through the second connector assembly and the first connector assembly; the audio encoding circuit is connected between the audio output interface and the second connector assembly so as to be connected to the programmable logic device through the second connector assembly and the first connector assembly.
In an embodiment of the present invention, the interposer is further provided with a screen connection reset key, and the screen connection reset key is connected to the microcontroller through the second connector assembly and the first connector assembly.
In an embodiment of the present invention, the interposer is further provided with a plurality of liquid crystal interfaces of different interface types, and the plurality of liquid crystal interfaces of different interface types are connected to the microcontroller through the second connector assembly and the first connector assembly.
In another aspect, an embodiment of the present invention provides a display system, including: the display screen controller comprises any one of the display screen controllers, a receiving card and an LED display screen; the receiving card is connected between the adapter plate of the display screen controller and the LED display screen.
In another aspect, an embodiment of the present invention provides a core board, including: the system comprises a plug-in component, a programmable logic device, a microcontroller, a video decoder, a multi-path Ethernet PHY, a video encoder and a video distributor; the plug-in component comprises a multi-channel video source input pin, a multi-channel Ethernet signal pin, a multi-channel video source output pin and a communication interface pin; the microcontroller is connected with the programmable logic device and the communication interface pin, the video decoder is connected between the multipath video source input pin and the programmable logic device, the multipath Ethernet PHY is connected between the programmable logic device and the multipath Ethernet signal pin, the video encoder is connected with the video decoder, and the video distributor is connected between the video encoder and the multipath video source output pin.
In an embodiment of the present invention, the socket assembly further includes an audio input pin, an audio output pin, a plurality of liquid crystal interface pins with different interface types, a screen connection reset pin, a multi-path serial port cascade input pin, and a multi-path serial port cascade output pin, the programmable logic device is connected to the audio input pin and the audio output pin, the microcontroller is connected to the liquid crystal interface pins with different interface types and the screen connection reset pin, the multi-path serial port cascade input pin is connected to one path of serial port of the microcontroller through the programmable logic device, and the multi-path serial port cascade output pin is connected to the other path of serial port of the microcontroller through the programmable logic device.
In another aspect, an embodiment of the present invention provides a display box, including: any of the core boards described above; the core board is connected with the lamp panel interface group through the plug assembly and the second plug assembly in a plug-in mode so as to form electric connection with the adapter board; a receiving card plugged to the third plug assembly to form an electrical connection with the interposer, thereby connecting to the multi-path Ethernet PHY through the third plug assembly, the second plug assembly, and the plug assembly; and the LED lamp panel group is connected with the lamp panel interface group.
In an embodiment of the present invention, the adapter board further includes a video main input interface, a video backup input interface, and a multi-path video loop output interface; the video main input interface and the video backup input interface are connected to the video decoder of the core board through the second plug-in component and the plug-in component, and the multi-path video loop-out interface is connected to the video distributor of the core board through the second plug-in component and the plug-in component.
The above technical solution may have one or more of the following advantages: in the embodiment of the invention, the display screen controller with the function of sending the card is designed into a separate design mode of the core board and the adapter board, and the adapter board can be designed according to the corresponding structure size of the box body, so that the display screen controller can be directly installed in the box body; furthermore, the same video decoder is provided with an access multi-path, such as two-path video source signal input, and automatically judges that when one of the video source faults is automatically switched to another video source, and can carry out loop-out backup on the input video source signal, as long as one of the video source is normal, two paths of video sources can be looped out to input to the display screen controller of the next level, and the unique backup mechanism further improves the reliability of the system.
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 structural diagram of a display screen controller according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the core board shown in fig. 1.
FIGS. 3A and 3B are schematic pin layouts for pairs of connectors in the connector assemblies on the core board of FIG. 1.
Fig. 4 is a schematic structural diagram of the interposer shown in fig. 1.
Fig. 5 is a schematic structural diagram of a display system according to a second embodiment of the invention.
Fig. 6 is a schematic structural diagram of a display box according to a third embodiment of the present 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 ] A method for manufacturing a semiconductor device
Referring to fig. 1, a display screen controller 10 according to a first embodiment of the present invention has a card sending function and includes: an interposer 11 and a core board 13. The adapter plate 11 is provided with a plug assembly 111, the core plate 13 is provided with a plug assembly 131, and the core plate 13 and the adapter plate 11 are electrically connected through the plug assembly 131 and the plug assembly 111 in a plugging mode. For example, the connector assembly 131 is a female socket, and the connector assembly 111 is a mating male socket; alternatively, the connector assembly 131 may be a male connector and the connector assembly 111 may be a female connector.
Referring to fig. 2, the core board 13 is further provided with, for example, a programmable logic device 130, a volatile memory 1301, a video decoder 1302, a video encoder 1303, a video distributor 1304, a non-volatile memory 1305, multi-path gigabit ethernet PHYs (physical layer transceivers) 1306a to 1306d, a microcontroller 132, and a gigabit ethernet PHY 1321. The Programmable logic device 130 is, for example, a Field Programmable Gate Array (Field Programmable Gate Array) device, and the volatile memory 1301 and the nonvolatile memory 1305 are respectively connected to the Programmable logic device 130, which are, for example, a Double Data Rate (DDR) synchronous dynamic random access memory (DDR) and a Flash memory (Flash memory). The video decoder 1302 is connected between the patch assembly 131 and the programmable logic device 130, the video distributor 1304 is connected to the video decoder 1302 via the video encoder 1303, and the video distributor 1304 is connected between the patch assembly 131 and the video encoder 1303; the video decoder 1302 may, for example, access two video source signals (e.g., two HDMI or DVI signals) and may select one video source signal for decoding processing and outputting, and the video distributor 1304 is, for example, a one-input two-output distributor. The multi-gigabit ethernet PHYs 1306a-1306d are each coupled to a programmable logic device 130. The microcontroller 132 is connected to the programmable logic device 130 and a non-volatile memory 1305, such as an MCU or other microprocessor; the hundred mega ethernet PHY1321 is connected between the microcontroller 132 and the connector module 131, and is a component of a communication module between the microcontroller 132 and an upper computer. In this embodiment, the multi-gigabit ethernet PHYs 1306a-1306d are part of a network transport module.
In addition, the two-way serial port of the microcontroller 132 is connected with multiple paths such as a four-way serial port via the programmable logic device 130 and the plug assembly 131, the microcontroller 132 is connected with the USB and the liquid crystal interface via the plug assembly 131 and receives a screen connection reset signal and a Real-time Clock (RTC) via the plug assembly 131; the programmable logic device 130 is also connected to an audio input pin and an audio output pin of the connector assembly 131. It should be noted that the left and right connector modules 131 shown in fig. 2 are actually the same connector module, and the two connector modules are shown for convenience of drawing the connecting lines between the respective elements in fig. 2.
In view of the above, with reference to fig. 1, 2, 3A and 3B, the connector assembly 131 includes, for example, a pair of connector JH1 and connector JH2, the connector JH1 and the connector JH2 being, for example, 120-pin connectors, respectively; for names and brief descriptions of the pins of connector JH1 and connector JH2, see FIGS. 3A and 3B and tables 1 and 2 below.
Specifically, the pins in area ① in fig. 3A and 3B are reserved expansion function interfaces for subsequent function expansion, the pins in area ② in fig. 3A are four gigabit ethernet Signal pins (each including four pairs of Differential Signal pins) for communication between display controller 10 and a receiving card, the pins in area ③ in fig. 3A are two HDMI video source input pins (each including four pairs of Differential Signal pins and DDC Signal pins) for video source Signal input of DVI (Digital Visual Interface) or HDMI (Digital video Interface), the pins in area TMDS in fig. 3A are abbreviations for Minimized Differential Signal transmission (Time Minimized Differential Signal), the pins in area HDMI ④ in fig. 3B are two HDMI video source output pins for Digital Visual Interface (Digital Visual Interface), the pins in HDMI (high definition Multimedia Interface (HDMI), i.e., for clear Multimedia Interface (DVI) and the other interfaces, the pins in area HDMI ④ in english are two HDMI video source output pins for middle video source Signal output of TMDS (Digital Visual Interface), the pins in area DVI (DVI) and other pins in-tv Interface pins, and the pins in area B are two USB input pins for audio Signal output of universal serial Interface modules, such as UART Interface modules, universal serial Interface modules.
TABLE 1 definition of respective Pin Functions of connector JH1
TABLE 2 various Pin function definitions for connector JH2
Referring to fig. 1, 2 and 4, the patch panel 11 further includes, for example, a main video input interface 1102a, a backup video input interface 1102b, video loop-out interfaces 1104a and 1104b, a liquid crystal interface 1103, a screen connection reset key 1104, a real-time clock module 1105, network ports 1106a to 1106d and 1107, a USB port 1108, serial ports 1109a and 1109b, serial ports 1110a and 1110b, an audio input interface 1111, an audio output interface 1112, an audio decoding circuit 1113 and an audio encoding circuit 1114.
The multi-path network ports 1106a to 1106d are connected to the connector assembly 111, so that the multi-path gigabit ethernet PHYs 1306a to 1306d on the core board 13 are correspondingly connected through the connector assembly 111 and the connector assembly 131, respectively, and thus the multi-path network ports 1106a to 1106d and the multi-path gigabit ethernet PHYs 1306a to 1306d form a network transmission module of the display screen controller 10 according to this embodiment; typically, network transformers are also added between the jack module 111 and the multiple network ports 1106a-1106d for signal enhancement and interference isolation. In this embodiment, the ports 1106a to 1106d are for example RJ45 interfaces respectively.
The serial ports 1109a and 1109b may be used for two-way serial port cascade input and connected to the connector assembly 111, so as to be connected to one-way serial port of the microcontroller 132 through the connector assembly 111, the connector assembly 131 and the programmable logic device 130 on the core board 13; the serial ports 1110a and 1110b may be used for two serial port cascade outputs and are connected to the connector assembly 111 so as to be connected to the other serial port of the microcontroller 132 through the connector assembly 111 and the connector assembly 131 and the programmable logic device 130 on the core board 13.
The network port 1107 connects to the connector assembly 111, thereby connecting the hundred mega ethernet PHY1321 on the core board 13 through the connector assembly 111 and the connector assembly 131; the USB port 1108 is connected to the connector assembly 111 to connect the microcontroller 132 on the core board 13 through the connector assembly 111 and the connector assembly 131. It is worth mentioning that the network port 1107, the hundred mega ethernet PHY and the USB port form a communication module between the microcontroller 132 and an upper computer such as a PC in this embodiment.
The video main input interface 1102a and the video backup input interface 1102b are connected to the patch module 111, so as to connect the video decoder 1302 on the core board 13, which is, for example, an HDMI interface or other video interface, respectively, through the patch module 111 and the patch module 131; the video loop-out interfaces 1104a and 1104b are connected to the connector assembly 111 to connect the video distributor 1304, such as an HDMI interface or other video interface, respectively, on the core board 13 via the connector assembly 111 and the connector assembly 131.
The liquid crystal interface 1103 is connected to the connector block 111 so as to be connected to the microcontroller 132 on the core board 13 by plugging the connector block 111 and the connector block 131; in this embodiment, the liquid crystal interface 1103 includes, for example, a serial liquid crystal interface, an SPI liquid crystal interface, and an 8080 liquid crystal interface. The screen reset button 1104 is connected to the connector assembly 111 so as to be plug-connected to the microcontroller 132 on the core board 13 through the connector assembly 111 and the connector assembly 131. The real-time clock module 1105 is connected to the connector assembly 111 so as to connect the microcontroller 132 on the core board 13 through the connector assembly 111 and the connector assembly 131, and the real-time clock module 1105 of the present embodiment includes, for example, an I2C interface real-time clock chip.
The audio decoding circuit 1113 is connected between the audio input interface and the connector block 111, thereby connecting the programmable logic device 130 on the core board 13 through the connector block 111 and the connector block 131; in this embodiment, the audio decoding circuit 1113 includes, for example, an audio decoding chip. The audio encoding circuit 1114 is connected between the audio output interface 1112 and the connector block 111, thereby connecting the programmable logic devices 130 on the core board 13 through the connector block 111 and the connector block 131; in this embodiment, the audio encoding circuit 1114 includes an audio encoding chip, for example.
For the display screen controller 10 shown in fig. 1 to 4 in this embodiment, the microcontroller 132 reads a program from the non-volatile memory 1305, such as the flash memory, and loads the program to the programmable logic device 130 when the power is turned on; video signals input from a video source are input to the core board 13 through the video main input interface 1102a or the video backup input interface 1102b of the adapter board 11 and the patch modules 111 and 131, decoded by the video decoder 1302 to be TTL level and then sent to the programmable logic device 130 for processing, processed by the patch module 131 through gigabit Ethernet PHYs such as 1306a-1306d and then output by the network ports such as 1106a-1106d, and the input video signals are provided with four-network-port outputs and can be configured as four-output or two-output two-backup. Meanwhile, after being decoded by the video decoder 1302 to TTL level, the video signal input from the video source is also input to the video encoder 1303 for encoding, and then output through the video distributor 1304 for loop-out backup to perform video input on the next-stage display screen controller. Audio signals can be input through the audio input interface 1111 of the adapter board 11, decoded by the audio decoding circuit 1113 on the adapter board 11, and then input to the programmable logic device 130 for processing through the plug component 111 and the plug component 131, one channel and processed video signals are packed and output through gigabit ethernet PHYs such as 1306a-1306d, and the other channel can be encoded through the audio encoding circuit 1114 and then output through the audio output interface 1112; the audio output interface 1112 may directly output a fixed audio input, or may output an audio signal obtained by decoding an HDMI signal and stripping the decoded signal.
In addition, the microcontroller 132 is also connected to the programmable logic device 130 through two serial ports, and the programmable logic device 130 can be expanded to a two-in two-out (or called two-in two-out) serial port cascade through detection and identification; the two-in two-out serial port cascade mode can facilitate the wiring between the boxes through the design of the adapter board 11, for example, in the case that the adapter board 11 is substantially rectangular, the two-in two-out four-way cascade serial ports can be respectively arranged on four sides of the rectangular adapter card 11.
The display controller 10 may be connected to a liquid crystal module (LCD) having three interface types of a serial port (UART), SPI, and 8080 to display related information, for example, information such as temperature and voltage of a box read back from a receiving card. Further, the communication interfaces such as the network port 1107 and the USB port 1108 connected through the gigabit ethernet PHY1321 may be connected to a host computer such as a PC for program upgrading and related control. The display screen controller 10 may be configured by the screen configuration software LCT, and the equipped screen connection reset key 1104 facilitates one-key reset of the screen configuration software (e.g., LCT software developed by west nova electronics technologies, inc.) to be issued to a screen configuration file in the microcontroller 132 of the display screen controller 10, thereby facilitating rapid screen configuration operations when replacing or maintaining the LED display screen to which the display screen controller 10 is connected.
In summary, in this embodiment, for the problem that the size of the conventional sending card is too large, the display screen controller 10 with the function of sending card is designed as a separate design manner of the core board and the adapter board, and the adapter board 11 can be designed according to the corresponding size of the box body and can be directly installed in the box body. For example, the adapter card 11 can be made into various shapes, such as a substantially rectangular shape, an octagonal shape, etc., according to the actual situation. In addition, the core board 13 is, for example, substantially rectangular, and has a whole board size of, for example, 115mm × 65mm, a board thickness of not more than 1.6mm, a total thickness (board thickness + front and back side device thickness) of not more than 6.0mm, two positioning holes for mounting and fixing, and all signals are input and output by the connector module 131, and as long as the adapter board 11 satisfies the size of the core board 131, the shape and size thereof can be changed freely. Since the display controller 110 of the present embodiment is much smaller in size than a conventional transmitter card, it can be directly installed inside the cabinet.
Moreover, for the reliability problem of the traditional sending card, the same video decoder is set to be accessed into multiple paths such as two paths of video source input, and the video decoder automatically judges that when one path of video source fails, the video decoder can be automatically switched to another video source; the output backup can be carried out on the input video source signals, and two paths of video sources can be output to input to the next-stage display screen controller as long as one path of video source is normal; the unique backup mechanism further improves the reliability of the system.
Finally, it should be noted that in other embodiments, the elements shown in fig. 2 and fig. 4 may be increased or decreased as appropriate according to the requirements of practical applications, for example, the four-way serial ports 1109a, 1109b, 1110a and 1110b shown in fig. 4 may be omitted when serial port cascade among multiple display panel controllers is not considered, or the video encoder 1303 and the video distributor 1304 shown in fig. 2 may be omitted when video source looping is not considered in the display panel controllers, or the real-time clock module 1105 is not arranged on the adapter board 11 shown in fig. 4, but only a real-time clock interface is reserved, or the liquid crystal interface 1103 on the adapter board 11 is only designed as a liquid crystal interface of one interface type, such as an 8080 liquid crystal interface, and the like, and these appropriate modifications should be included in the protection scope of the present invention.
[ second embodiment ]
Referring to fig. 5, a display system 50 according to a second embodiment of the present invention includes: a display screen controller 51, a receiving card 53 and an LED display screen 55. The display screen controller 51 is connected to an LED display screen 55 through a receiving card 53, and the LED display screen 55 includes a plurality of display panels such as LED lamp panels, for example. Furthermore, the display screen controller 51 is, for example, the display screen controller 10 described in the foregoing first embodiment, and thus includes the interposer 11 and the core board 13 connected by the connector assemblies 111 and 131; accordingly, the receiving card 53 is connected to the adapter board 11 of the display controller 51, for example, via a network cable. Since the display screen controller 10 of the first embodiment is adopted in the present embodiment, the present embodiment may have the following features:
(I) the display screen controller can be integrated to any suitable position of the LED display screen and is used for the application of integrating the LED display screen into a whole by transmitting and receiving, thereby greatly saving the space and being used as an independent controller;
(II) supporting the real-time monitoring and displaying of the temperature and the voltage of the box body by the externally-hung liquid crystal, supporting one-key resetting of a matched screen file, and supporting development of man-machine interaction;
(III) the compatibility is high, and a user can design a required adapter plate according to actual requirements;
(IV) high reliability, support video source (such as HDMI) master spare input and master spare to encircle out, and network port master spare is exported;
(V) four-way network port output is supported, two main ports and two standby ports are provided in a backup mode, and four-way output is simultaneously provided in a large-load mode;
(VI) two serial port cascade inputs and two serial port cascade outputs are supported, and when the cascade is not needed, one input and one output can be used as expansion interfaces of other peripheral equipment;
(VII) supporting an external fixed audio input and an audio output;
(VIII) the serial port liquid crystal interface, the SPI liquid crystal interface and the 8080 parallel port liquid crystal interface are supported, and the device can be used for displaying information such as box temperature, voltage and the like in real time;
(IX) supports one RJ45 communication interface and one USB communication interface, and can be used for connecting an upper computer such as a PC;
and (X) supports an RTC clock interface, can be connected with a clock peripheral and can also be used as an expansion interface of other I2C peripheral.
[ third embodiment ]
Referring to fig. 6, a display box 60 according to a third embodiment of the present invention includes: the LED lamp panel group comprises an adapter board 61, a core board 63, a receiving card 65 and an LED lamp panel group 67. The adapter plate 61 is provided with a plug assembly 611, a plug assembly 613 and a lamp panel interface group 615, the core plate 63 is provided with a plug assembly 631, and the receiving card 65 is provided with a plug assembly 651; the core board 63 is plugged with the plug assembly 611 through the plug assembly 631 to form an electrical connection with the adapter board 61, the receiving card 65 is plugged with the plug assembly 613 through the plug assembly 651 to form an electrical connection with the adapter board 61, and the LED lamp panel group 67 is connected to the lamp panel interface group 615 of the adapter board 61.
More specifically, the connector assembly 611 and the connector assembly 631 employ, for example, the connector assembly 111 and the connector assembly 131 of the foregoing first embodiment, respectively, and the core board 63 employs, for example, the core board 13 of the foregoing first embodiment; the interposer 61, for example, includes the various components (shown in fig. 4) on the interposer 11 of the first embodiment, but does not have the ports 1106a-1106d, but rather, connects the PCB traces on the interposer 11 that are originally connected to the ports 1106a to the connector assembly 613 (for example, through the network transformer or directly to the connector assembly 613), so that the connector assembly 613 can receive the signals output by the gigabit ethernet PHY1306a of the core board and transmit the signals to the receiving card 65 for processing. The connector assemblies 651 may be, for example, gold finger structures, or paired connectors, and correspondingly the connector assemblies 613 may be, for example, single connectors or paired connectors. The panel interface set 615 is, for example, a flex cable interface, and typically the connector assembly 613 is connected to the panel interface set 615 through a signal driving chipset, such as 74HC245 chipset, so as to receive display data and display control signals (such as RGB data and clock signals, latch signals, enable signals, row address signals, etc.) output by the card 65, and transmit the display control signals to the signal driving chipset via the connector assembly 651 and the connector assembly 613 for signal enhancement and to the panel interface set 615 for output to the LED panel set 67. Furthermore, the circuit design on the receiving card 65 may adopt the existing mature design, for example, the circuit design includes programmable logic device, microcontroller, volatile memory, non-volatile memory, and multiple ethernet PHY, and the details are not described herein. In addition, it is worth mentioning that the lamp panel interface group can be a single interface or a plurality of interfaces, the LED lamp panel group can be one LED lamp panel string or a plurality of LED lamp panel strings, the single LED lamp panel string includes one or a plurality of LED lamp panels, and a plurality of LED lamps are arranged on each LED lamp panel as display pixels.
In summary, the third embodiment of the present invention connects the core board 63 and the receiving card 65 to the same adapter board 61, so that the three can be directly installed inside the display box 60, thereby simplifying the connection between the cards.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and/or method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units/modules is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or modules 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/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules 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/modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
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 (12)
1. A display screen controller, comprising:
the core board is provided with a first plug-in component, a programmable logic device, a microcontroller, a video decoder and a multi-path Ethernet PHY (physical layer), wherein the microcontroller is connected with the programmable logic device, the video decoder is connected between the first plug-in component and the programmable logic device, and the multi-path Ethernet PHY is connected between the programmable logic device and the first plug-in component;
the adapter plate is provided with a second plug-in component, a video input interface and a multi-path network port, and the video input interface and the multi-path network port are respectively connected with the second plug-in component;
the core board and the adapter board are connected electrically through the first plug-in component and the second plug-in component in a plug-in mode, the video input interface is connected to the video decoder through the second plug-in component and the first plug-in component, and the multi-path Ethernet PHY is connected to the multi-path network port through the first plug-in component and the second plug-in component respectively.
2. The display screen controller of claim 1, wherein the video input interface comprises a video primary input interface and a video backup input interface, and the video primary input interface and the video backup input interface are connected to the same video decoder through the second connector assembly and the first connector assembly.
3. The display screen controller of claim 2, wherein the core board is further provided with a video encoder and a video distributor, and the adapter board is further provided with a multi-channel video loop-out interface; the video encoder is connected with the video decoder, and the video distributor is connected between the video encoder and the first plug-in component; the multi-video loop-out interface connects the second connector assembly to connect to the video distributor through the second connector assembly and the first connector assembly.
4. The display screen controller of claim 1, wherein the adapter plate is further provided with a plurality of first serial ports and a plurality of second serial ports; the multi-path first serial port is connected with the second plug assembly, so that the multi-path first serial port is connected to a one-path serial port of the microcontroller through the second plug assembly, the first plug assembly and the programmable logic device; the multi-path second serial port is connected with the second plug-in component, so that the multi-path second serial port is connected to the other path of serial port of the microcontroller through the second plug-in component, the first plug-in component and the programmable logic device.
5. The display screen controller of claim 1, wherein the adapter board is further provided with an audio input interface, an audio decoding circuit, an audio output interface, and an audio encoding circuit; the audio decoding circuit is connected between the audio input interface and the second connector assembly so as to be connected to the programmable logic device through the second connector assembly and the first connector assembly; the audio encoding circuit is connected between the audio output interface and the second connector assembly so as to be connected to the programmable logic device through the second connector assembly and the first connector assembly.
6. The display screen controller of claim 1, wherein the adapter board is further provided with a screen connection reset key, the screen connection reset key being connected to the microcontroller through the second connector assembly and the first connector assembly.
7. The display screen controller of claim 1, wherein the adapter board is further provided with a plurality of liquid crystal interfaces of different interface types, the plurality of liquid crystal interfaces of different interface types being connected to the microcontroller through the second connector assembly and the first connector assembly.
8. A display system, comprising: a display screen controller according to any one of claims 1 to 7, a receiving card and an LED display screen; the receiving card is connected between the adapter plate of the display screen controller and the LED display screen.
9. A core board, comprising: the system comprises a plug-in component, a programmable logic device, a microcontroller, a video decoder, a multi-path Ethernet PHY, a video encoder and a video distributor;
the plug-in component comprises a multi-channel video source input pin, a multi-channel Ethernet signal pin, a multi-channel video source output pin and a communication interface pin;
the microcontroller is connected with the programmable logic device and the communication interface pin, the video decoder is connected between the multipath video source input pin and the programmable logic device, the multipath Ethernet PHY is connected between the programmable logic device and the multipath Ethernet signal pin, the video encoder is connected with the video decoder, and the video distributor is connected between the video encoder and the multipath video source output pin.
10. The core board of claim 9, wherein the connector assembly further comprises an audio input pin, an audio output pin, a plurality of liquid crystal interface pins of different interface types, a screen connection reset pin, a multi-way serial port cascade input pin, and a multi-way serial port cascade output pin, wherein the programmable logic device is connected to the audio input pin and the audio output pin, the microcontroller is connected to the liquid crystal interface pins of the plurality of different interface types and the screen connection reset pin, the multi-way serial port cascade input pin is connected to one-way serial port of the microcontroller through the programmable logic device, and the multi-way serial port cascade output pin is connected to another-way serial port of the microcontroller through the programmable logic device.
11. A display cabinet, comprising:
the core board of claim 9 or 10;
the core board is connected with the lamp panel interface group through the plug assembly and the second plug assembly in a plug-in mode so as to form electric connection with the adapter board;
a receiving card plugged to the third plug assembly to form an electrical connection with the interposer, thereby connecting to the multi-path Ethernet PHY through the third plug assembly, the second plug assembly, and the plug assembly;
and the LED lamp panel group is connected with the lamp panel interface group.
12. The display cabinet of claim 11, wherein the adapter plate further comprises a video main input interface, a video backup input interface, and a multi-way video loop out interface; the video main input interface and the video backup input interface are connected to the video decoder of the core board through the second plug-in component and the plug-in component, and the multi-path video loop-out interface is connected to the video distributor of the core board through the second plug-in component and the plug-in component.
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| CN201811222598.3A CN111081184B (en) | 2018-10-19 | 2018-10-19 | Display screen controller, display system, core board and display box |
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| CN201811222598.3A CN111081184B (en) | 2018-10-19 | 2018-10-19 | Display screen controller, display system, core board and display box |
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| CN111081184B (en) | 2021-01-29 |
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