CN113138732A - Multi-display controller system, access control system, and display controller - Google Patents
Multi-display controller system, access control system, and display controller Download PDFInfo
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- CN113138732A CN113138732A CN202010057027.XA CN202010057027A CN113138732A CN 113138732 A CN113138732 A CN 113138732A CN 202010057027 A CN202010057027 A CN 202010057027A CN 113138732 A CN113138732 A CN 113138732A
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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
- G06F3/1438—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 using more than one graphics controller
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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
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
Abstract
The embodiment of the invention discloses a multi-display controller system, an access control system and a display controller. The multi-display controller system comprises a plurality of cascaded display controllers, wherein the plurality of display controllers comprise an Nth-level display controller and an (N +1) th-level display controller which is connected with the Nth-level display controller in a wired Ethernet mode or a wireless network mode, and N is a positive integer; the Nth-level display controller comprises a first network switching chip, a first communication interface and a second communication interface, wherein the first communication interface and the second communication interface are connected with the first network switching chip; the (N +1) th-level display controller comprises a second network switching chip, and a third communication interface and a fourth communication interface which are connected with the second network switching chip, wherein the third communication interface is connected with the second communication interface in a wired Ethernet mode or a wireless network mode, and the fourth communication interface is used for being connected with the next-level display controller of the (N +1) th-level display controller in a wired Ethernet mode or a wireless network mode.
Description
Technical Field
The present invention relates to the field of access control technologies, and in particular, to a multi-display controller system, an access control system, and a display controller.
Background
Currently, in the field of control of display screens, such as LED display screens, an access control scheme of a display controller (e.g., a transmitter card) is designed mainly in a bus type cascade structure. Fig. 1 is a hardware architecture diagram of an access control system using a bus-type cascade structure. As can be seen from fig. 1, the entire system architecture is composed of an upper computer (for example, a PC) on which upper computer software is installed and a plurality of display controllers, the upper computer and each display controller are connected by a USB (Universal Serial Bus), the upper computer completes enumeration of a first display controller (display controller 1), the display controller 1 is responsible for enumeration of a display controller 2 (as a USB slave) as a USB master, the display controller 2 is responsible for enumeration of a display controller 3 (as a USB slave) as a USB master, and so on, and the display controller (N-1) is responsible for enumeration of a display controller N (as a USB slave) as a USB master. Although hardware of the whole system is simple to erect, software development difficulty is low, and sequencing and positioning of the display controller are facilitated. However, the disadvantages of this architecture are mainly the following: (1) the communication rate is low, the delay is large, the transmission is unstable, and the method is not suitable for large-batch data transmission; (2) the remote operation cannot be carried out, and Browser access operation based on a B/S (Browser/Server) architecture is not usually supported; and (3) connecting cables supporting such an architecture often do not support long-distance transmission and are not convenient to erect on site.
Disclosure of Invention
Accordingly, to overcome at least some of the disadvantages and shortcomings of the prior art, embodiments of the present invention provide a multi-display controller system, an access control system, and a display controller.
In one aspect, a multi-display controller system provided in an embodiment of the present invention includes a plurality of display controllers that are sequentially cascaded; the display controllers comprise an Nth-level display controller and an (N +1) th-level display controller which is connected with the Nth-level display controller in a wired Ethernet mode or a wireless network mode, wherein N is a positive integer; the Nth-level display controller comprises a first network switching chip, a first communication interface and a second communication interface, wherein the first communication interface and the second communication interface are electrically connected with the first network switching chip, and the first communication interface is used for connecting an upper computer or a previous-level display controller; the (N +1) th-level display controller comprises a second network switching chip and a third communication interface and a fourth communication interface which are electrically connected with the second network switching chip, the third communication interface is connected with the second communication interface in a wired Ethernet mode or a wireless network mode, and the fourth communication interface is used for being connected with the next-level display controller of the (N +1) th-level display controller in the wired Ethernet mode or the wireless network mode.
In the above solution, the multi-display controller system includes a plurality of display controllers that are sequentially cascaded, and an nth-level display controller and an (N +1) th-level display controller included in the plurality of display controllers are connected in a wired ethernet manner or a wireless network manner, so that one or more of the following advantages can be achieved: (1) the system architecture is simplified, and fewer cables are required; (2) the network connection mode of the multi-display controller system enables a host computer connected with the multi-display controller system to remotely access all the display controllers, and the multi-display controller system is suitable for large-batch data transmission; (3) network connection is adopted to support remote transmission control; (4) the display controller exchanges data based on the network exchange chip, and the data transmission delay is low; and (5) the display controllers are flexible in cascade sequencing, so that the upper computer can conveniently position the display controllers.
In an embodiment of the present invention, the nth level display controller further includes an embedded processor electrically connected to the first network switch chip; wherein the first network switch chip is configured to: receiving a data packet via one of the first communication interface and the second communication interface; analyzing the MAC address of the data packet to determine a target receiving device corresponding to the data packet; in response to the target receiving device being the nth level display controller, sending the data packet to the embedded processor, or in response to the target receiving device not being the nth level display controller, sending the data packet via the other of the first communication interface and the second communication interface.
In an embodiment of the present invention, the third communication interface and the fourth communication interface are ethernet interfaces, respectively, and the (N +1) th-level display controller is connected to the nth-level display controller and the subsequent-level display controller through the ethernet interfaces in a wired ethernet manner.
In one embodiment of the invention, the plurality of display controllers are the same or different LED display controllers, and each LED display controller is an LED video controller with a video processing function and a sending card function or an LED sending card supporting a 3D display function.
In another aspect, an embodiment of the present invention provides an access control system, including: an upper computer; and a multi-display controller system as described in any of the embodiments above; the upper computer is connected with first-level display controllers in the multi-display controller system in a wired Ethernet mode or a wireless network mode, and is used for enumerating the display controllers so as to carry out access control on the display controllers.
In the above scheme, the access control system includes an upper computer and a multi-display controller system connected to the upper computer, and the upper computer is configured to enumerate a plurality of display controllers in the multi-display controller system to perform access control on the plurality of display controllers, so that one or more of the following advantages can be achieved: (1) the system architecture is simplified, and fewer cables are required; (2) the upper computer can remotely access all the display controllers and is suitable for large-batch data transmission; (3) network connection is adopted to support remote transmission control; (4) the display controller exchanges data based on the network exchange chip, and the data transmission delay is low; and (5) the display controllers are flexible in cascade sequencing, so that the upper computer can conveniently position the display controllers.
In an embodiment of the present invention, the upper computer is configured to perform access control on the plurality of display controllers through respective IP addresses of the plurality of display controllers, or the upper computer is configured to perform packet access control on the plurality of display controllers based on IGMP.
In one embodiment of the invention, the upper computer is connected with the first-level display controller through a network cable.
In one embodiment of the invention, the plurality of display controllers are a plurality of same or different LED display controllers, and each LED display controller is an LED video controller with a video processing function and a sending card function or an LED sending card supporting a 3D display function and drives and controls an LED display screen connected with the LED video controller through a receiving card.
In an embodiment of the present invention, the upper computer is used as an HTTP client when performing access control on the plurality of display controllers, and the plurality of display controllers are used as HTTP server terminals, and the HTTP client accesses the plurality of display controllers through a single window; or the upper computer is used as a TCP client and is provided with LED display screen configuration software when the plurality of display controllers are subjected to access control, and the plurality of display controllers are used as TCP server ends.
In another aspect, an embodiment of the present invention provides a display controller, including: a network switch chip; the front-end communication interface and the rear-end communication interface are respectively and electrically connected with the network exchange chip; the embedded processor is electrically connected with the network switching chip; the front-end communication interface is used for being connected with an upper computer or a front-end display controller in a wired Ethernet mode or a wireless network mode, and the rear-end communication interface is used for being connected with a rear-end display controller in a wired Ethernet mode or a wireless network mode; wherein the network switch chip is configured to: receiving a data packet via one of the front-end communication interface and the back-end communication interface; analyzing the MAC address of the data packet to determine a target receiving device corresponding to the data packet; in response to the target receiving device being the display controller, sending the data packet to the embedded processor, or in response to the target receiving device not being the display controller, sending the data packet via the other of the front-end communication interface and the back-end communication interface.
In the above scheme, the display controller includes a network switch chip, a front-end communication interface for connecting the upper computer or the front-end display controller in a wired ethernet manner or a wireless network manner, a back-end communication interface for connecting the back-end display controller in a wired ethernet manner or a wireless network manner, and an embedded processor, so that the structure of the display controller can achieve one or more of the following beneficial effects: (1) the display controller enables a simplified structure of a display controller system including a plurality of the display controllers, requiring fewer cables; (2) the structure of the display controller enables an upper computer connected with the display controller to remotely access the display controller, and the display controller is suitable for large-batch data transmission; (3) network connection is adopted to support remote transmission control; (4) the display controller exchanges data based on the network exchange chip, and the data transmission delay is low; and (5) the display controllers are flexible in cascade sequencing, so that the upper computer can conveniently position the display controllers.
One or more of the above technical solutions may have the following advantages or beneficial effects: (1) the system architecture is simplified, and fewer cables are required; (2) the network connection mode of the multi-display controller system enables an upper computer connected with the multi-display controller system to support remote access to all display controllers, and the multi-display controller system is suitable for large-batch data transmission; (3) network connection is adopted to support remote transmission control; (4) the display controller exchanges data based on the network exchange chip, and the data transmission delay is low; and (5) the display controllers are flexible in cascade sequencing, so that the upper computer can conveniently position the display controllers.
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 diagram of a hardware architecture of an access control system using a bus-type cascade structure in the prior art.
Fig. 2 is a block diagram of a hardware structure implementation of an access control system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the system cascade access logic of the access control system shown in fig. 2.
Fig. 4 is a schematic diagram illustrating a connection between the nth level display controller and the (N +1) th level display controller of the multi-display controller system in fig. 2.
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.
As shown in fig. 2, an embodiment of the present invention provides an access control system, which includes an upper computer, such as a PC, and a multi-display controller system, in which upper computer software is installed. The multi-display controller system comprises a plurality of display controllers which are sequentially cascaded. The upper computer is connected with a first-stage display controller (display controller 1) in the cascaded display controllers in a wired Ethernet mode or a wireless network mode, and the subsequent display controllers at all stages are connected in the wired Ethernet mode or the wireless network mode. Here, the wired ethernet manner may be, for example, a connection through a network cable, for example, a connection through an RJ45 network cable; the wireless network mode may be, for example, a wireless network such as WIFI, bluetooth, etc., which is not limited in this embodiment.
In the above access control system, the upper computer may be configured to complete enumeration of all the display controllers to perform access control on the plurality of display controllers. The upper computer and each display controller are connected by adopting a network (a wired Ethernet mode or a wireless network mode), so that the whole system architecture of the scheme is simpler, has high communication speed and good stability compared with the system architecture connected by the USB in the prior art.
For example, the upper computer may perform access control on the plurality of display controllers, for example, through respective IP (Internet Protocol) addresses of the plurality of display controllers, that is, in a case where the upper computer and the plurality of display controllers are connected through a network (whether a wired network or a wireless network), each display controller has its own IP address, so that the upper computer may perform specific access to each display controller directly through the IP address of the display controller. Optionally, the upper computer may further perform Group access control on the plurality of display controllers based on, for example, IGMP (Internet Group Management Protocol), that is, the display controllers may be grouped based on the arrangement (for example, the positions of the display controllers) of the display controllers, for example, a certain three display controllers are taken as a Group, and the upper computer accesses the three display controllers through the Internet Management Protocol, so as to implement the Group access on the display controllers.
Furthermore, in this embodiment, since network connection is adopted, the upper computer can remotely access all the display controllers, and the system is suitable for large-batch data transmission and supports remote transmission control. Moreover, the display controller of the embodiment has flexible cascade sequencing, and is convenient for the upper computer to sequence and position the display controller.
It should be noted that the plurality of display controllers may be, for example, the same or different LED display controllers, and each of the LED display controllers is an LED video controller having a video processing function and a sending card function, or an LED display screen that is connected to an LED sending card supporting a 3D display function and is driven and controlled by a receiving card.
As shown in fig. 3, it is a schematic diagram of the system cascade access logic of the access control system shown in fig. 2. Specifically, access control can be performed on the display controllers in two ways through a network, one way is that a WEB browser based on a B/S architecture is used, an upper computer is used as an HTTP client and a plurality of display controllers are used as HTTP Server ends to realize the access control, wherein upper computer software is, for example, the WEB browser, each display controller has a WEB remote control function and runs a Server program, for example, an HTTP Server program, under the B/S architecture, a browser single window accesses and controls all cascaded display controllers 1-N, and browser windows of all cascaded display controllers are consistent; secondly, the upper computer software supports a TCP protocol, and the upper computer is used as a TCP Client (TCP Client) and each display controller is used as a TCP Server (for example, a TCP Server program is operated) to realize, wherein the upper computer software is, for example, LED display screen configuration software LCT and the like. Further, each display controller exchanges packets based on a MAC (media Access Control) address of the received packet. For example, when the display controller 1 receives an HTTP/TCP request message (that is, a TCP request message or an HTTP request message) sent by upper computer software, such as LED display screen configuration software LCT or a WEB browser, the display controller 1 may determine whether an MAC (Media Access Control) address of the HTTP/TCP request message is the device, and if the MAC address is not the device, the display controller 2 sends the HTTP/TCP request message to the upper computer software, and if the MAC address is the device, the HTTP/TCP response message is sent to the upper computer software (which will be described in detail below based on a specific structure of the display controller). For the subsequent display controllers 2 to N, after receiving the HTTP/TCP request message sent by the previous display controller, the same procedure is performed.
When the upper computer and each display control controller are connected through a wireless network, such as WIFI, bluetooth, or other wireless network connection, the network communication protocol based on which the communication is performed may also be other protocols such as Zigbee, and is not limited to TCP or HTTP protocols.
A multi-display controller system according to an embodiment of the present invention will be described in detail with reference to fig. 4. For illustrative purposes, fig. 4 only shows a connection schematic diagram of the nth level display controller and the (N +1) th level display controller in the multi-display controller system, where N is a positive integer. It should be noted that the number of the display controllers included in the multi-display controller system may be two, three or more, and the embodiment of the present invention is not limited in detail herein.
In the above, the nth level display controller and the (N +1) th level display controller are connected in a wired ethernet manner or a wireless network manner.
Specifically, the nth level display controller includes a first network switch chip (e.g., a switch chip) and a first communication interface and a second communication interface electrically connected to the first network switch chip, and the first communication interface is used for connecting an upper computer (e.g., a PC) or a previous level display controller (if the previous level display controller exists). The (N +1) th-level display controller comprises a second network switching chip, and a third communication interface and a fourth communication interface which are electrically connected with the second network switching chip, wherein the third communication interface is connected with the second communication interface in a wired Ethernet mode or a wireless network mode, and the fourth communication interface is used for being connected with the next-level display controller of the (N +1) th-level display controller in the wired Ethernet mode or the wireless network mode.
For example, the third communication interface and the fourth communication interface may be ethernet interfaces, respectively, such that the (N +1) th-level display controller is connected to the nth-level display controller and the next-level display controller via the ethernet interfaces in a wired ethernet manner. In this embodiment, a plurality of display controllers of the multi-display controller system may be connected to each other through a network cable or only through a wireless network; of course, some display controllers may be connected through a network cable, and other display controllers may be connected through a wireless network, which is not specifically limited in this embodiment of the present invention.
As shown in fig. 4, the nth-level display controller further includes a first embedded processor, such as an arm (advanced RISC machines), electrically connected to the first network switch chip, for example, the first embedded processor may be connected to the first network switch chip through an MII (Media Independent Interface) or an RGMII (Reduced Gigabit Media Independent Interface), but the embodiment is not limited thereto. Similarly, as shown in fig. 4, the (N +1) -th-level display controller further includes a second embedded processor, such as an arm (advanced RISC machines), electrically connected to the second network switching chip.
In this way, the first network switch chip is configured to: receiving a data packet via one of the first communication interface and the second communication interface; analyzing the MAC address of the data packet to determine a target receiving device corresponding to the data packet; in response to the target receiving device being the nth level display controller, sending the data packet to the first embedded processor for the embedded processor to correspondingly process the data packet for sending to a module controller (e.g., a receiving card) electrically connected to the nth level display controller, or, in response to the target receiving device not being the nth level display controller, sending the data packet via the other of the first communication interface and the second communication interface. For example, when the nth level display controller receives a data packet from the first communication interface, the first network switch chip parses the MAC address of the data packet, and when the first network switch chip determines that the target receiving device of the data packet is the device, the data packet is forwarded to the first embedded processor, and when the first network switch chip determines that the target receiving device of the data packet is not the device, the data packet is sent to the (N +1) th level display controller through the second communication interface. The processing procedure after the (N +1) th-level display controller receives the data packet is similar to that of the nth-level display controller, and is not described herein again.
It should be noted that the first network switch chip is further configured to receive a data packet (e.g., a response data packet) from the first embedded processor electrically connected to the first network switch chip, perform MAC address analysis on the data packet to determine whether a target receiving device of the data packet is an upper computer or a previous-level display controller or an (N +1) -th-level display controller, and perform a forwarding process of the data packet via the first communication interface or the second communication interface according to the determined target receiving device.
In this embodiment, data exchange implemented by a network switching chip (e.g., the first embedded processor) of a display controller (e.g., the nth-level display controller) is hard exchange, and compared with a soft exchange used in a system architecture using a USB connection in the prior art, the data transmission delay of the embodiment of the present invention is low, and the communication stability is high, and the present invention is suitable for large-batch data transmission.
In summary, the foregoing embodiments of the present invention connect the host computer and the plurality of display controllers through the network, so that one or more of the following advantages can be achieved: the multi-display controller system comprises a plurality of display controllers which are sequentially cascaded, wherein the nth-level display controller and the (N +1) th-level display controller which are arranged in the plurality of display controllers are connected in a wired Ethernet mode or a wireless network mode, so that one or more of the following beneficial effects can be achieved: (1) the system architecture is simplified, and fewer cables are required; (2) the network connection mode of the multi-display controller system enables a host computer connected with the multi-display controller system to remotely access all the display controllers, and the multi-display controller system is suitable for large-batch data transmission; (3) network connection is adopted to support remote transmission control; (4) the display controller exchanges data based on the network exchange chip, and the data transmission delay is low; (5) the cascade sequencing is flexible, and the upper computer can conveniently position the display controller.
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.
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 (10)
1. A multi-display controller system, comprising: a plurality of display controllers which are sequentially cascaded; wherein the content of the first and second substances,
the plurality of display controllers comprise an Nth-level display controller and an (N +1) th-level display controller which is connected with the Nth-level display controller in a wired Ethernet mode or a wireless network mode, wherein N is a positive integer;
the Nth-level display controller comprises a first network switching chip, a first communication interface and a second communication interface, wherein the first communication interface and the second communication interface are electrically connected with the first network switching chip, and the first communication interface is used for connecting an upper computer or a previous-level display controller;
the (N +1) th-level display controller comprises a second network switching chip and a third communication interface and a fourth communication interface which are electrically connected with the second network switching chip, the third communication interface is connected with the second communication interface in a wired Ethernet mode or a wireless network mode, and the fourth communication interface is used for being connected with the next-level display controller of the (N +1) th-level display controller in the wired Ethernet mode or the wireless network mode.
2. The multi-display controller system of claim 1, wherein the nth level display controller further comprises an embedded processor electrically connected to the first network switch chip;
wherein the first network switch chip is configured to:
receiving a data packet via one of the first communication interface and the second communication interface;
analyzing the MAC address of the data packet to determine a target receiving device corresponding to the data packet;
in response to the target receiving device being the nth level display controller, sending the data packet to the embedded processor, or in response to the target receiving device not being the nth level display controller, sending the data packet via the other of the first communication interface and the second communication interface.
3. The multi-display controller system according to claim 1, wherein the third communication interface and the fourth communication interface are ethernet interfaces, respectively, and the (N +1) th-level display controller is connected to the nth-level display controller and the subsequent-level display controller via the ethernet interfaces via a wired ethernet manner.
4. The multi-display controller system according to any one of claims 1-3, the plurality of display controllers are a plurality of LED display controllers which are the same or different, and each of the LED display controllers is an LED video controller having a video processing function and a transmitting card function, or an LED transmitting card supporting a 3D display function.
5. An access control system, comprising:
an upper computer; and
the multi-display controller system of any of claims 1-4;
the upper computer is connected with first-level display controllers in the multi-display controller system in a wired Ethernet mode or a wireless network mode, and is used for enumerating the display controllers so as to carry out access control on the display controllers.
6. The access control system of claim 5,
the upper computer is used for carrying out access control on the plurality of display controllers through respective IP addresses of the plurality of display controllers, or the upper computer is used for carrying out grouping access control on the plurality of display controllers based on IGMP.
7. The access control system of claim 5, wherein the host computer is connected to the first level display controller via a network cable.
8. The access control system of claim 5,
the LED display system comprises a plurality of display controllers, a plurality of LED video controllers and a plurality of LED display screens, wherein the display controllers are the same or different LED display controllers, and each LED display controller is an LED video controller with a video processing function and a card sending function or an LED display screen which supports a 3D display function, drives and controls an LED sending card and is connected with the LED sending card through a receiving card.
9. The access control system of claim 5,
the upper computer is used as an HTTP client when performing access control on the plurality of display controllers, the plurality of display controllers are used as HTTP server ends, and the HTTP client accesses the plurality of display controllers through a single window; or the upper computer is used as a TCP client and is provided with LED display screen configuration software when the plurality of display controllers are subjected to access control, and the plurality of display controllers are used as TCP server ends.
10. A display controller, comprising:
a network switch chip;
the front-end communication interface and the rear-end communication interface are respectively and electrically connected with the network exchange chip;
the embedded processor is electrically connected with the network switching chip;
the front-end communication interface is used for being connected with an upper computer or a front-end display controller in a wired Ethernet mode or a wireless network mode, and the rear-end communication interface is used for being connected with a rear-end display controller in a wired Ethernet mode or a wireless network mode;
wherein the network switch chip is configured to:
receiving a data packet via one of the front-end communication interface and the back-end communication interface;
analyzing the MAC address of the data packet to determine a target receiving device corresponding to the data packet;
in response to the target receiving device being the display controller, sending the data packet to the embedded processor, or in response to the target receiving device not being the display controller, sending the data packet via the other of the front-end communication interface and the back-end communication interface.
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| CN202010057027.XA CN113138732A (en) | 2020-01-16 | 2020-01-16 | Multi-display controller system, access control system, and display controller |
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| CN202010057027.XA CN113138732A (en) | 2020-01-16 | 2020-01-16 | Multi-display controller system, access control system, and display controller |
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| CN202010057027.XA Pending CN113138732A (en) | 2020-01-16 | 2020-01-16 | Multi-display controller system, access control system, and display controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114927110A (en) * | 2022-06-27 | 2022-08-19 | 青岛信芯微电子科技股份有限公司 | Backlight control method, display device, chip system and medium |
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| CN204857144U (en) * | 2015-07-24 | 2015-12-09 | 西安诺瓦电子科技有限公司 | Led display screen control system and sending card |
| CN105679231A (en) * | 2015-12-31 | 2016-06-15 | 西安诺瓦电子科技有限公司 | Terminal device access control system and led display system |
| CN209103796U (en) * | 2018-10-29 | 2019-07-12 | 深圳市摩西尔电子有限公司 | 2.5G/5G/10G the LED display controller of ethernet communication |
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| CN204857144U (en) * | 2015-07-24 | 2015-12-09 | 西安诺瓦电子科技有限公司 | Led display screen control system and sending card |
| CN105679231A (en) * | 2015-12-31 | 2016-06-15 | 西安诺瓦电子科技有限公司 | Terminal device access control system and led display system |
| CN209103796U (en) * | 2018-10-29 | 2019-07-12 | 深圳市摩西尔电子有限公司 | 2.5G/5G/10G the LED display controller of ethernet communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114927110A (en) * | 2022-06-27 | 2022-08-19 | 青岛信芯微电子科技股份有限公司 | Backlight control method, display device, chip system and medium |
| CN114927110B (en) * | 2022-06-27 | 2024-03-15 | 青岛信芯微电子科技股份有限公司 | Backlight control method, display equipment, chip system and medium |
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