CN109429016B - Display control system - Google Patents
Display control system Download PDFInfo
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- CN109429016B CN109429016B CN201710769784.8A CN201710769784A CN109429016B CN 109429016 B CN109429016 B CN 109429016B CN 201710769784 A CN201710769784 A CN 201710769784A CN 109429016 B CN109429016 B CN 109429016B
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- interface
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- signal converter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
The embodiment of the invention discloses a display control system, which is used for carrying a display screen comprising a first display area and a second display area, and comprises the following components: a display screen controller; the first signal converter is connected with the display screen controller and is used for connecting the display screen to carry the first display area; and the second signal converter is connected with the display screen controller and is used for connecting the display screen to carry the second display area. The embodiment of the invention can improve the flexibility of the connection between the signal converter and the display screen.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display control system.
Background
At present, an LED display screen is generally formed by splicing a plurality of LED box bodies, each LED box body is provided with a receiving card, and the receiving cards can display image contents on the LED box bodies when the LED display screen is electrified and started. Generally, the LED display screen is connected to the display control system at the front end thereof through a network cable, and the effective transmission distance of the network cable is generally within 100 meters, so that along with the increasing size of the LED display screen, the scheme in the prior art that all network cables carrying all display areas of the LED display screen are connected to a single device is increasingly difficult to meet the network cable connection requirement between the LED display screen and the front end display control system, which causes the placement position of the display control system to be limited, so that the connection flexibility is poor.
Disclosure of Invention
Therefore, the embodiment of the present invention provides a display control system to achieve the technical effect of improving the connection flexibility.
In one aspect, a display control system is provided for carrying a display screen including a first display region and a second display region. The display control system includes: a display screen controller; the first signal converter is connected with the display screen controller and is used for connecting the display screen to carry the first display area; and the second signal converter is connected with the display screen controller and is used for connecting the display screen to carry the second display area. The interface of the first signal converter and the interface of the second signal converter, which are connected with the display screen controller, are first type interfaces, and the interface of the first signal converter and the interface of the second signal converter, which are used for connecting the display screen, are second type interfaces different from the first type interfaces.
In one embodiment of the invention, the first signal converter and the second signal converter are adapted to be mounted on different sides of the display screen.
In an embodiment of the present invention, the display screen controller has a first main control fiber interface, a first backup fiber interface, a second main control fiber interface, and a second backup fiber interface, where the first main control fiber interface and the first backup fiber interface are respectively connected to the first type interface of the first signal converter through a fiber, and the second main control fiber interface and the second backup fiber interface are respectively connected to the first type interface of the second signal converter through a fiber.
In one embodiment of the present invention, the display screen controller further includes: the video decoding circuit is connected between the video interface and the main processing circuit, and the first driving circuit is connected with the main processing circuit, the first main control optical fiber interface, the first backup optical fiber interface, the second main control optical fiber interface and the second backup optical fiber interface.
In one embodiment of the invention, the main processing circuit comprises a microcontroller and a programmable logic device; the microcontroller is connected with the programmable logic device, and the video decoding circuit and the first driving circuit are respectively connected with the programmable logic device of the main processing circuit.
In an embodiment of the present invention, the display screen controller further includes a second driving circuit and a plurality of network ports, and the plurality of network ports are connected to the main processing circuit through the second driving circuit.
In one embodiment of the present invention, the first signal converter includes: the signal conversion control circuit comprises a signal conversion control circuit, a first type interface driving circuit and a second type interface driving circuit which are respectively connected with the signal conversion control circuit, wherein the first type interface driving circuit is connected between a first type interface of the first signal converter and the signal conversion control circuit, and the second type interface driving circuit is connected between a second type interface of the first signal converter and the signal conversion control circuit.
In an embodiment of the present invention, the signal conversion control circuit includes a microcontroller and a programmable logic device, the microcontroller is connected to the programmable logic device, and the first type interface driving circuit and the second type interface driving circuit are respectively connected to the programmable logic device.
In an embodiment of the invention, the first signal converter has two paths of the first type interfaces to connect two paths of optical fiber interfaces of four paths of optical fiber interfaces of the display screen controller through optical fibers, and the first signal converter has eight paths of the second type interfaces to connect the display screen partially or completely through network cables to carry the first display area.
In an embodiment of the present invention, the first type interface is an optical fiber interface, the second type interface is a network interface, and the first signal converter and the second signal converter are both photoelectric converters.
One technical scheme of the technical scheme has the following advantages or beneficial effects: by redesigning the whole framework of the display control system and combining the display screen controller with the plurality of signal converters to carry out regional loading on the target display screen, the flexibility of the connection between the signal converters and the target display screen can be obviously improved, and the using amount of wires during connection can be reduced.
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 control system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display screen controller according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a signal converter according to an 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.
Fig. 1 is a schematic structural diagram of a display control system according to an embodiment of the present invention. As shown in fig. 1, the display control system 10 is for carrying a display screen 20 including a display area 21 and a display area 22 and includes: display screen controller 11, signal converter 13 and signal converter 15.
The signal converter 13 is connected with the display screen controller 11 and is used for connecting the display screen 20 to carry a display area 21; the signal converter 15 is connected to the display screen controller 10 and is used to connect the display screen 20 to carry the display area 22. The interfaces of the signal converters 13 and 15 connected with the display screen controller 11 are first type interfaces, and the interfaces of the signal converters 13 and 15 used for connecting with the display screen 20 are second type interfaces different from the first type interfaces. The signal converters 13, 15 are respectively disposed on different sides of the display screen 20, such as the left and right sides of the display screen 20 shown in fig. 1, or the left and right sides under the display screen 20 (i.e., the two sides of the middle dotted line of the display screen 20 in fig. 1). In the present embodiment, the display screen 20 is divided into a plurality of display areas, e.g. 21 and 22, and the signal converters, e.g. 13 and 15 are respectively carried, so that the connection lines (typically, network lines) between the signal converters 13 and 15 and the display screen 20 have high flexibility, and the length of the line can be reduced.
To facilitate understanding of the display control system 10 of the present embodiment, the display control system 10 of the present embodiment will be described in detail below with reference to fig. 2 and 3.
Fig. 2 is a schematic diagram of a specific structure of the display screen controller 11. As shown in fig. 2, the display screen controller 11 includes: a main processing circuit 111, a video interface 113, a video decoding circuit 115, a driving circuit 117a, an optical fiber interface 119a, a driving circuit 117b, and a network interface 119 b.
The video interface 113 is used to connect an external video source to receive a video signal input. In this embodiment, the number of the video interfaces 113 may be one or more, and the video interfaces 113 are, for example, digital video interfaces, analog video interfaces, or a combination thereof. The video interface 113 includes, for example, an HDMI interface, a DP interface, and a dual-link DVI interface.
The video decoding circuit 115 is connected between the video interface 113 and the main processing circuit 111, and is generally provided with a video decoding chip, which is provided in association with the type of the video interface 113. For example, when the video interface 113 is a DVI interface, the video decoding chip is a DVI video decoding chip; when the video interface 113 is a DP interface, the video decoding chip adopts a DP video decoding chip; when the video interface 113 is an HDMI interface, the video decoding chip is an HDMI video decoding chip.
The main processing circuit 111 includes, for example, a programmable logic device 1111 and a microcontroller 1113 such as an MCU connected to the programmable logic device 1111. The programmable logic device 1111 is, for example, an FPGA, and the microcontroller 1113 is, for example, configured to load and configure the FPGA and is used as a controller for the display controller 11 to communicate with an external device, for example, the microcontroller 1113 may interact with the external device through a hundreds megabyte network port, a serial port, a USB port, and the like, and may also be connected to a human-computer interaction device, such as a key, an LCD screen, and the like. Typically, after the video decoding circuit 115 obtains an input video signal from the video interface 113, the decoded data and control signals are transmitted to the programmable logic device 1111 of the main processing circuit 111, and the programmable logic device 1111 performs buffering, clock domain replacement and bit width conversion operations by an internal or external RAM, and then outputs the processed data. For example, the internal logic of the programmable logic device 1111 may include a data input module, a dual port RAM and a control module thereof, a 24-bit to 8-bit module, and a data output module; the data input module distributes the input video signal (including data, clock, enable and line-field synchronous signal) to the back-end double-port RAM and its control module, and controls the synchronization of the whole system, the control module of the double-port RAM controls the read-write operation of the RAM, especially the control of the four states of start-write, stop-write, start-read and stop-read: and the data output from the dual-port RAM is transmitted to the data output module after parallel-serial conversion, and the data output module packs and outputs the received data according to a certain format.
The driver circuit 117a is connected between the programmable logic device 1111 of the main processing circuit 111 and the optical fiber interface 119 a. In this embodiment, the driving circuit 117a includes: the optical module performs photoelectric conversion, and for example, may convert an electrical signal output from the programmable logic device 1111 into an optical signal and output the optical signal through the optical fiber interface 119 a. For example, the optical module may be an SFP (Small Form-factor Pluggable) optical module. More specifically, the driving circuit 117a is typically configured with a plurality of optical modules for the multi-fiber interface 119a, for example, when the fiber interface 119a is four-way, the driving circuit 117a may be configured with four optical modules. It should be noted that the number of the optical fiber interfaces 119a in this embodiment is not limited, and the actual application requirements can be met.
The driver circuit 117b is connected between the programmable logic device 1111 of the main processing circuit 111 and the net port 119 b. In this embodiment, the driving circuit 117b includes an ethernet physical layer transceiver (PHY), and a network transformer may be additionally disposed on the output side of the ethernet physical layer transceiver to increase the signal transmission distance. More specifically, for the multi-port 119b, the driving circuit 117b is typically configured with a combination of a multi-port ethernet physical layer transceiver and a network transformer, for example, when the port 119b is sixteen ports, the driving circuit 117b may be configured with a combination of sixteen ports ethernet physical layer transceiver and a network transformer. Of course, it should be noted that the number of the network ports 119b in this embodiment is not limited, and the actual application requirements can be met. In addition, it should be noted that the arrangement of the network port 119b and the driving circuit 117b is beneficial to diversification of the output interface of the display screen controller 11, so as to improve the compatibility thereof; in order to realize that the network port 119b and the optical fiber interface 119a have the same loading capacity, the ratio of the number of the optical fiber interfaces to the number of the network ports is preferably 1: 4.
Fig. 3 is a schematic diagram of a specific structure of the signal converter 13. As shown in fig. 3, the signal converter 13 is, for example, a photoelectric converter, and includes: signal conversion control circuit 131, drive circuit 133, fiber interface 135, drive circuit 137 and network interface 139.
The signal conversion control circuit 131 includes, for example, a programmable logic device 1311 and a microcontroller 1313 such as an MCU connected to the programmable logic device 1311. The programmable logic device 1311 is used for signal conversion control, and is, for example, an FPGA. The microcontroller 1313 is, for example, a controller for loading and configuring the FPGA and communicating with an external device as the signal converter 13, and the microcontroller 1313 may interact with the external device through a hundred mega network port, a USB port, and the like to update the system program.
The driver circuit 133 is connected between the fiber interface 135 and the programmable logic device 1311 in the signal conversion control circuit 131. In this embodiment, the driving circuit 133 includes: the optical module performs optical-electrical conversion, and for example, converts an optical signal input through the optical fiber interface 135 into an electrical signal and inputs the electrical signal to the programmable logic device 1311. For example, the optical module may be an SFP optical module. More specifically, for the multi-fiber interface 135, the driving circuit 133 is typically configured with a plurality of optical modules, for example, when the fiber interface 135 is two-way, the driving circuit 133 may be configured with two optical modules. It should be noted that the number of the optical fiber interfaces 135 in this embodiment is not limited, and can meet the actual application requirements.
The driving circuit 137 is connected between the net port 139 and the programmable logic device 1311 in the signal conversion control circuit 131. In this embodiment, the driving circuit 137 includes an ethernet physical layer transceiver (PHY), and a network transformer may be additionally disposed on the output side of the ethernet physical layer transceiver to increase the signal transmission distance. More specifically, for multi-port 139, drive circuit 137 is typically configured with a combination of multi-ethernet physical layer transceivers and network transformers, e.g., when port 139 is eight-port, drive circuit 137 may be configured with a combination of eight-ethernet physical layer transceivers and network transformers. It should be noted that the number of the network ports 139 in this embodiment is not limited, and the actual application requirements can be met. It should be noted that, in order to achieve the same loading capacity of the network ports 139 and the optical fiber interfaces 135, the ratio of the number of the optical fiber interfaces to the number of the network ports is preferably 1: 4.
As for the signal converter 15, it may have the same structural configuration as the signal converter 13, for example, all configured with a signal conversion control circuit, a network port, an optical fiber interface and related driving circuits, and therefore, the description thereof is omitted here. Of course, the signal converter 13 and the signal converter 15 may have the same number of optical fiber interfaces and network ports, or may have different numbers of optical fiber interfaces and network ports.
In addition, for a clearer understanding of the display control system 10 of the present embodiment, the following describes the general operation process of the display control system 10 by taking the display controller 11 configured with four optical fiber interfaces, the signal converters 13 and 15 configured with two optical fiber interfaces and eight network ports respectively as an example, the display screen controller 11 is connected with two optical fiber interfaces of the signal converter 13 through optical fibers to respectively serve as a main control optical fiber interface and a backup optical fiber interface, similarly, the display screen controller 11 is connected with two optical fiber interfaces of the signal converter 15 through optical fibers to respectively serve as a main control optical fiber interface and a backup optical fiber interface, part or all of eight network interfaces of the signal converter 13 are connected with the display screen 20 to carry a display area 21, and part or all of eight network interfaces of the signal converter 15 are connected with the display screen 20 to carry a display area 22; the backup optical fiber interface is beneficial to ensuring that the system works more reliably.
As described above, the video signal is input through the video interface 113 of the display controller 11, is subjected to video decoding by the video decoding circuit 115, and is then sent to the programmable logic device 1111 of the main processing circuit 111 for processing to obtain a processed signal, which is converted into a corresponding optical signal by the driving circuit 117a and then sent to the signal converters 13 and 15 through the optical fiber interface 119a and the optical fiber. Next, taking the signal converter 13 as an example, the optical fiber interface 135 receives the optical signal from the display controller 11, the driving circuit 133 converts the optical signal into a corresponding electrical signal, and sends the electrical signal to the programmable logic device 1311 in the signal conversion control circuit 131 for protocol format conversion to obtain an ethernet data signal, and then the ethernet data signal is output to the network port 139 through the driving circuit 137, and is sent to the display area 21 of the display 20 through the network cable connected to the network port 139 for image display. For example, for a specific application where the maximum width in the one-dimensional direction of the resolution of the display screen 20 is within the range (1920,4096) (i.e., greater than 1920 and less than 4096), if a single signal converter (e.g., with sixteen ports) is used, the placement position of the single signal converter is relatively limited, whereas if a plurality of signal converters, such as two signal converters, are used according to the foregoing embodiment of the present invention, the connection with the network cable of the display screen 20 is relatively flexible, and the length of the network cable used can be significantly reduced.
Finally, it should be noted that in other embodiments, it may also be considered that the display controller 11 does not have a backup optical fiber interface, and therefore, for connecting the two signal converters 13 and 15, the display controller 11 may only have two optical fiber interfaces 119a as the main control interfaces, and the signal converters 13 and 15 may also have only one optical fiber interface 135. In another embodiment, in consideration of the situation that the display screen controller 11 does not have a backup fiber interface, the display screen controller 11 may carry four signal converters by using the four-way fiber interface 119 a.
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, a division of a unit is merely a division of one logic function, and an 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 also 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 (9)
1. A display control system for carrying a display screen including a first display region and a second display region, the display control system comprising:
a display screen controller;
the first signal converter is connected with the display screen controller and is used for connecting the display screen to carry the first display area;
the second signal converter is connected with the display screen controller and is used for connecting the display screen to carry the second display area;
the interface of the first signal converter and the interface of the second signal converter, which are connected with the display screen controller, are first type interfaces, and the interface of the first signal converter and the interface of the second signal converter, which are used for connecting the display screen, are second type interfaces different from the first type interfaces; the first signal converter and the second signal converter are used for converting optical signals into Ethernet data signals;
wherein the first signal converter comprises: the signal conversion control circuit comprises a signal conversion control circuit, a first type interface driving circuit and a second type interface driving circuit which are respectively connected with the signal conversion control circuit, wherein the first type interface driving circuit is connected between a first type interface of the first signal converter and the signal conversion control circuit, and the second type interface driving circuit is connected between a second type interface of the first signal converter and the signal conversion control circuit.
2. The display control system of claim 1, wherein the first signal converter and the second signal converter are for mounting on different sides of the display screen.
3. The display control system of claim 1, wherein the display screen controller has a first master fiber interface, a first backup fiber interface, a second master fiber interface, and a second backup fiber interface, the first master fiber interface and the first backup fiber interface respectively being connected to the first type interface of the first signal converter through optical fibers, the second master fiber interface and the second backup fiber interface respectively being connected to the first type interface of the second signal converter through optical fibers.
4. The display control system of claim 3, wherein the display screen controller further comprises: the video decoding circuit is connected between the video interface and the main processing circuit, and the first driving circuit is connected with the main processing circuit, the first main control optical fiber interface, the first backup optical fiber interface, the second main control optical fiber interface and the second backup optical fiber interface.
5. The display control system of claim 4, wherein the main processing circuit comprises a microcontroller and a programmable logic device; the microcontroller is connected with the programmable logic device, and the video decoding circuit and the first driving circuit are respectively connected with the programmable logic device of the main processing circuit.
6. The display control system of claim 5, wherein the display screen controller further comprises a second driving circuit and a multi-way network port, and the multi-way network port is connected with the main processing circuit through the second driving circuit.
7. The display control system according to claim 1, wherein the signal conversion control circuit comprises a microcontroller and a programmable logic device, the microcontroller is connected to the programmable logic device, and the first type interface driving circuit and the second type interface driving circuit are respectively connected to the programmable logic device.
8. The display control system of claim 1, wherein the first signal converter has two of the first type interfaces to connect two of the four fiber interfaces of the display screen controller via optical fibers, and eight of the second type interfaces to connect the display screen partially or completely via a network cable to carry the first display area.
9. The display control system of any one of claims 1 to 8, wherein the first type of interface is an optical fiber interface, the second type of interface is a network port, and the first signal converter and the second signal converter are both optical-to-electrical converters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710769784.8A CN109429016B (en) | 2017-08-31 | 2017-08-31 | Display control system |
| PCT/CN2018/097489 WO2019042057A1 (en) | 2017-08-31 | 2018-07-27 | Display control system and display screen controller |
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| CN201710769784.8A CN109429016B (en) | 2017-08-31 | 2017-08-31 | Display control system |
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| CN112397012A (en) * | 2019-07-31 | 2021-02-23 | 西安诺瓦星云科技股份有限公司 | LED display screen, display control system, receiving card and module controller |
| CN110430377A (en) * | 2019-08-01 | 2019-11-08 | 深圳市奥拓电子股份有限公司 | Video Controller array |
| CN112346679B (en) * | 2019-08-07 | 2024-01-09 | 西安诺瓦星云科技股份有限公司 | Multi-display control system, display system and multi-display control method |
| CN110933332B (en) * | 2019-11-21 | 2022-02-22 | 大峡谷照明系统（苏州）股份有限公司 | Display control system |
| CN112995751A (en) * | 2019-12-18 | 2021-06-18 | 西安诺瓦星云科技股份有限公司 | Data transmission method and system |
| CN113205764B (en) * | 2020-01-15 | 2022-08-16 | 西安诺瓦星云科技股份有限公司 | Control method, photoelectric conversion equipment, display control system and LED display system |
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| US9118888B1 (en) * | 2014-03-14 | 2015-08-25 | Tribune Broadcasting Company, Llc | News production system with integrated display |
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| CN201185455Y (en) * | 2007-12-20 | 2009-01-21 | 深圳市奥拓电子有限公司 | High performance LED display screen system |
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