CN112825505A - Communication state detection method, display controller and module controller - Google Patents
Communication state detection method, display controller and module controller Download PDFInfo
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- H—ELECTRICITY
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- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- 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
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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Abstract
The embodiment of the invention discloses a communication state detection method, a display controller, a module controller and a display screen control system. The communication state detection method is suitable for a display controller of a display screen control system, and the display screen control system further comprises at least one module controller electrically connected with the display controller; the communication state detection method comprises the following steps: sending a data packet containing a first check value obtained according to a preset check mode to the at least one module controller; periodically receiving a check statistic result obtained by the at least one module controller according to the data packet; determining a communication link status between the display controller and the at least one module controller based on the verification statistics. The embodiment of the invention can realize the monitoring of the state of the communication link.
Description
Technical Field
The invention relates to the technical field of display, in particular to a communication state detection method, a display controller, a module controller and a display screen control system.
Background
In the field of display technology, a display screen control system generally includes a display controller (also called a sending card), a module controller (also called a receiving card), and a display screen such as an LED display screen, which are electrically connected in sequence, and at present, since data transmission is generally performed between the sending card and the receiving card through a gigabit network, stability of a communication link between the sending card and the receiving card is particularly important for data transmission. In order to ensure the normal operation of the LED display screen and avoid the problems of screen blacking and screen flashing caused by abnormal communication, detecting the state of the communication link between the sending card and the receiving card becomes a problem to be solved urgently.
Disclosure of Invention
Therefore, to overcome the defects and shortcomings in the prior art, embodiments of the present invention provide a communication status detection method, a display controller, a module controller, and a display screen control system, so as to implement real-time monitoring of the communication link status between the display controller and the module controller.
In one aspect, an embodiment of the present invention provides a communication status detection method, which is applicable to a display controller of a display screen control system, and the display screen control system further includes at least one module controller electrically connected to the display controller; the communication state detection method comprises the following steps: sending a data packet containing a first check value obtained according to a preset check mode to the at least one module controller; periodically receiving a check statistic result obtained by the at least one module controller according to the data packet; determining a communication link status between the display controller and the at least one module controller based on the verification statistics.
In the above scheme, the display controller first sends (for example, sends in a normal display process of the display screen control system) a data packet including a first check value obtained according to a preset check mode to the at least one module controller, then periodically receives a check statistical result obtained by the at least one module controller according to the data packet, and finally determines a communication link state between the display controller and the at least one module controller according to the check statistical result.
In an embodiment of the present invention, before the sending the data packet including the first check value obtained according to the preset check manner to the at least one module controller, the communication status detection method further includes: acquiring image data; and checking the image data according to the preset checking mode to obtain the first checking value, and packing the packet header information, the image data and the first checking value to obtain the data packet, wherein the preset checking mode comprises sum checking, cyclic redundancy checking or parity checking.
In an embodiment of the present invention, before the sending the data packet including the first check value obtained according to the preset check manner to the at least one module controller, the communication status detection method further includes: acquiring image or command data; and checking the image or command data and the packet header information according to the preset checking mode to obtain the first checking value, and packing the packet header information, the image or command data and the first checking value to obtain the data packet, wherein the preset checking mode comprises sum checking, cyclic redundancy checking or parity checking.
In one embodiment of the invention, the display controller comprises a first ethernet physical layer transceiver, each of the module controllers comprises a second ethernet physical layer transceiver, and the second ethernet physical layer transceiver is electrically connected to the first ethernet physical layer transceiver; the data packet is sent to the at least one module controller through the first Ethernet physical layer transceiver; before the sending the data packet including the first check value obtained according to the preset check mode to the at least one module controller, the communication state detection method further includes: and acquiring link detection result data in a register of the first Ethernet physical layer transceiver and/or the second Ethernet physical layer transceiver for judging the communication link state between the first Ethernet physical layer transceiver and the second Ethernet physical layer transceiver.
In an embodiment of the present invention, before the obtaining of the link detection result data in the register of the first ethernet physical layer transceiver and/or the second ethernet physical layer transceiver for determining the communication link status between the first ethernet physical layer transceiver and the second ethernet physical layer transceiver, the communication status detection method further includes: sending a link detection triggering instruction to the first Ethernet physical layer transceiver and/or the second Ethernet physical layer transceiver to trigger the first Ethernet physical layer transceiver and/or the second Ethernet physical layer transceiver to perform link detection.
On the other hand, the embodiment of the invention provides a communication state detection method, which is suitable for a module controller of a display screen control system, and the display screen control system further comprises a display controller electrically connected with the module controller; the communication state detection method comprises the following steps: receiving a data packet sent by the display controller, wherein the data packet comprises a first check value obtained by the display controller according to a preset check mode; unpacking the data packet to obtain processed data, and verifying the processed data according to the preset verification mode to obtain a second verification value; judging whether the second check value is matched with the first check value or not, and counting the number of error data packets according to the judgment result to obtain a check statistical result; and periodically sending the verification statistical result to the display controller so that the display controller can determine the communication link state between the display controller and the module controller.
In the scheme, a module controller firstly receives a data packet sent by a display controller (for example, sent in the normal display process of a display screen control system) and the data packet comprises a first check value obtained by the display controller according to a preset check mode, then unpacks the data packet to obtain processed data, and checks the processed data according to the preset check mode to obtain a second check value; then judging whether the second check value is matched with the first check value or not, and carrying out error data packet quantity statistics according to the judgment result to obtain a check statistical result; and finally, periodically sending the checking statistical result to the display controller so that the display controller can determine the communication link state between the display controller and the module controller, so that the display controller can determine the communication link state between the display controller and the module controller according to the checking statistical result sent by the module controller, thereby realizing the monitoring of the communication link state between the display controller and the at least one module controller by the display controller, facilitating a user to know whether the communication of the display screen control system is abnormal or not, and knowing the specific position of the communication abnormality under the condition that the communication abnormality is determined.
In one embodiment of the invention, the display controller comprises a first ethernet physical layer transceiver, the module controller comprises a second ethernet physical layer transceiver, and the second ethernet physical layer transceiver is electrically connected to the first ethernet physical layer transceiver; wherein, before receiving the data packet from the display controller, the communication state detection method further comprises: receiving a link detection trigger instruction from the display controller; controlling the second Ethernet physical layer transceiver to perform link detection or controlling the second Ethernet physical layer transceiver to perform network communication with the first Ethernet transceiver to obtain link detection result data from the second Ethernet physical layer transceiver based on the link detection trigger instruction; and sending the link detection result data to the display controller.
In one embodiment of the invention, the display controller comprises a first ethernet physical layer transceiver, the module controller comprises a second ethernet physical layer transceiver, and the second ethernet physical layer transceiver is electrically connected to the first ethernet physical layer transceiver; before receiving the data packet sent by the display controller, the communication state detection method further includes: receiving a link detection trigger instruction sent by the display controller; controlling the second Ethernet physical layer transceiver to perform link detection or controlling the second Ethernet physical layer transceiver to perform network communication with the first Ethernet transceiver to obtain link detection result data from the second Ethernet physical layer transceiver based on the link detection trigger instruction; and sending the link detection result data to the display controller.
In another aspect, an embodiment of the present invention provides a display controller, configured to perform the communication state detection method described in any one of the foregoing aspects.
In the above solution, the display controller can monitor the communication link status between the display controller and at least one module controller by executing the communication status detection method, so that a user can know whether the display screen control system is abnormal in communication, and can know the specific position of the communication abnormality when the communication abnormality is determined.
In another aspect, an embodiment of the present invention provides a module controller, configured to perform the communication status detection method according to any one of the above-mentioned another aspects.
In the above solution, the module controller enables the display controller to determine the communication link status between the display controller and the module controller according to the check statistic result sent by the module controller by executing the communication status detection method, so that the display controller can monitor the communication link status between the display controller and the at least one module controller, and a user can know whether the communication of the display screen control system is abnormal, so as to know the specific location of the communication abnormality when the communication abnormality is determined.
In another aspect, an embodiment of the present invention provides a display screen control system, which includes the above display controller and at least one of the above module controllers electrically connected to the display controller.
In the above solution, the display controller and the module controller are applied to the display screen control system including the display controller and the module controller, so that the display screen control system can monitor the communication link state between the display controller and the module controller, and a user can conveniently know whether the communication of the display screen control system is abnormal, so as to know the specific position of the communication abnormality under the condition that the communication abnormality is determined.
One or more of the above technical solutions may have the following advantages or beneficial effects: the communication state detection method, the communication state detection device and the display screen control system of the embodiment of the invention can realize monitoring of the communication link state of the display screen control system, and a user can conveniently know whether the communication of the display screen control system is abnormal or not, so that the specific position of the communication abnormality can be known under the condition that the communication abnormality is determined.
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 flowchart illustrating a communication status detection method according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a display screen control system using the communication network status method according to the embodiment of the present invention.
Fig. 3 is a flowchart illustrating a communication status detection method according to a second embodiment of the present invention.
Fig. 4 is a block diagram of a display controller according to a third embodiment of the present invention.
Fig. 5 is a block diagram of a module controller according to a fourth embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a display screen control system according to a fifth 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
As shown in fig. 1, a first embodiment of the present invention provides a communication state detection method. The communication state detection method is suitable for a display controller of a display screen control system, and the display screen control system further comprises at least one module controller electrically connected with the display controller; the communication state detection method includes, for example:
s12, sending a data packet including a first check value obtained according to a preset check manner to the at least one module controller;
s14, periodically receiving the verification statistic result obtained by the at least one module controller according to the data packet; and
s16, determining the communication link state between the display controller and the at least one module controller according to the checking statistic result.
For the convenience of understanding the present invention, the communication state detection method of the present embodiment will be described in detail below with reference to fig. 2. Fig. 2 shows a display screen control system, which includes a display controller 100, a module controller 200, and a module controller 300. Specifically, the module controller 200 and the module controller 300 are cascade-connected to the display controller 100. It should be noted that, although only two module controllers, i.e., the module controller 200 and the module controller 300, are shown in fig. 2, in other embodiments, the number of the module controllers may be one or more than two, and the embodiment of the present invention is not limited in this respect.
In performing the communication state detection method according to the embodiment of the present invention, the display controller 100 may first obtain a video signal locally from a video source such as a PC or the display controller 100, for example, and then decode the video signal to obtain image data (such as containing RGB data); and verifying the image data according to the preset verification mode to obtain the first verification value, and packaging the packet header information, the image data and the first verification value to obtain the data packet. Here, since the image data is the main data information required for the display screen control system to achieve normal display, the above-described scheme determines the communication link status between the display controller 100 and the module controllers 200 and 300 through the verification of the image data so that the user can more accurately understand the transmission of the image data in the entire communication link.
Alternatively, the display controller 100 may also acquire image or command data; and verifying the image or command data and the header information according to the preset verification mode to obtain the first verification value, and packaging the header information, the image or command data and the first verification value to obtain the data packet. In this case, not only the header information and the image data but also the header information data and the command data are verified, thereby more comprehensively detecting the communication link state of the display screen control system. For example, specifically, when the image data is acquired, the display controller 100 verifies the acquired image data and the packet header information according to a preset verification manner; when the command data is acquired, the display controller 100 verifies the acquired command data and the packet header information according to a preset verification mode; therefore, the image data packet and the command data packet can be verified, and the communication state detection is more comprehensive. For example, in the normal display process of a display screen control system such as an LED display screen control system (including the aforementioned display controller, the aforementioned at least one module controller, and an LED display screen connected to the aforementioned at least one module controller), assuming that a total of one hundred data packets, including ninety image data packets and ten command data packets, are sent from the display controller to the aforementioned at least one module controller for a certain period of time, each of 90 image data packets and 10 command data packets may be verified.
It should be noted that the predetermined Check manner includes a sum Check, a Cyclic Redundancy Check (CRC) or a parity Check, and of course, the predetermined Check manner may be other manners, and the embodiment of the present invention is not limited in detail herein.
Next, the display controller 100 transmits a data packet including the first check value obtained in the preset check manner to the module controller 200 and the module controller 300 to obtain a check statistic result based on the data packet by the module controller 200 and the module controller 300. Specifically, the display controller 100 transmits the data packet to the module controller 200 to obtain a first verification statistical result based on the data packet by the module controller 200, and transpasses the data packet to the module controller 300 by the module controller 200 and obtains a second verification statistical result based on the transpassed data packet by the module controller 300.
Then, the display controller 100 periodically acquires the first and second verification statistical results from the module controller 200 and the module controller 300, respectively.
Finally, the display controller 100 determines a communication link state between the display controller 100 and the at least one module controller (the module controller 200 and the module controller 300) according to the first check statistic result and the second check statistic result. Here, the embodiment of the present invention may determine, through the acquired first verification statistical result and second verification statistical result, not only the communication link state between the display controller 100 and the module controller 200, but also the communication link state between the module controller 200 and the module controller 300.
Referring again to fig. 2, the display controller 100 includes, for example, a programmable logic device 101 and an ethernet physical layer transceiver 102 electrically connected to the programmable logic device 101. The module controller 200 includes, for example, a programmable logic device 201, an ethernet physical layer transceiver 202, and an ethernet physical layer transceiver 203, the programmable logic device 201 being electrically connected between the ethernet physical layer transceiver 202 and the ethernet physical layer transceiver 203. The module controller 300 includes a programmable logic device 301, an ethernet physical layer transceiver 302, and an ethernet physical layer transceiver 303, the programmable logic device 301 is electrically connected between the ethernet physical layer transceiver 302 and the ethernet physical layer transceiver 303, the ethernet physical layer transceiver 102 is electrically connected to the ethernet physical layer transceiver 202, and the ethernet physical layer transceiver 203 is electrically connected to the ethernet physical layer transceiver 302. Specifically, the ethernet physical layer transceiver 102, the ethernet physical layer transceiver 202, the ethernet physical layer transceiver 203, the ethernet physical layer transceiver 302, and the ethernet physical layer transceiver 303 are, for example, ethernet PHY chips, such as RTL8211 PHY chips, but the embodiment of the invention is not limited thereto.
In the communication status detection method according to the embodiment of the invention, before the display controller 100 (for example, the programmable logic device 101 of the display controller 100) sends the data packet containing the first check value obtained according to the preset check manner to the module controller 200 and the module controller 300, the display controller 100 may further obtain link detection result data in registers of the ethernet physical layer transceiver 102, the ethernet physical layer transceiver 202, the ethernet physical layer transceiver 203, and the ethernet physical layer transceiver 302, so as to determine the communication link status between the ethernet physical layer transceiver 102 and the ethernet physical layer transceiver 202, and between the ethernet physical layer transceiver 203 and the ethernet physical layer transceiver 302. Here, in this embodiment, the determination of whether there is a communication abnormal risk in the communication link is realized by obtaining link detection result data of each ethernet physical layer transceiver, so as to realize the preliminary determination of the communication state.
As described above, the process of the display controller 100 acquiring the link detection result data is specifically as follows. The display controller 100 (specifically the programmable logic device 101) first sends a link detection trigger instruction to the programmable logic device 201 via its own ethernet physical layer transceiver 102 and the ethernet physical layer transceiver 202 of the module controller 200. After receiving the link detection trigger command, the programmable logic device 201 sends the link detection trigger command to the programmable logic device 301 via its own ethernet physical layer transceiver 203 and the ethernet physical layer transceiver 302 of the module controller 300. And then the programmable logic device 101, the programmable logic device 201 and the programmable logic device 301 trigger the respective ethernet physical layer transceiver to perform link detection and/or trigger the respective ethernet physical layer transceiver to perform link detection with another ethernet physical layer transceiver directly connected thereto based on the link detection trigger instruction, and link detection result data obtained after the respective ethernet physical layer transceiver performs link detection is stored in a register of the respective ethernet physical layer transceiver. Finally, the display controller 100 may, for example, obtain link detection result data in registers of the ethernet physical layer transceiver 102, obtain link detection result data in registers of the ethernet physical layer transceiver 202 and the ethernet physical layer transceiver 203 through the programmable logic device 201 of the module controller 200, and obtain link detection result data in registers of the ethernet physical layer transceiver 302 through the programmable logic device 301 of the module controller 300.
As mentioned above, the display controller 100, the module controller 200, and the module controller 300 may set their corresponding ethernet physical layer transceivers to a network Diagnostic Test (CDT) mode based on the link detection trigger instruction, so as to trigger each ethernet physical layer transceiver to perform link detection, so that each ethernet physical layer transceiver can obtain the link detection result data. It should be noted that the name of the test mode set by some ethernet physical layer transceivers, such as the network PHY chip, is not "CDT" mode, and therefore, the embodiments of the present invention do not limit this, and only the example of using the test function of the ethernet physical layer transceiver to obtain the link detection result data is described herein.
As mentioned above, the link detection result data includes, for example, one or more of network communication signal-to-noise ratio detection result data, data transmission communication state detection result data, data reception communication state detection result data, ethernet physical layer transceiver temperature power consumption detection result data, and data of whether an open circuit or a short circuit is formed between the interconnected ethernet physical layer transceivers. Specifically, the network communication snr detection result data is used to indicate whether the snr of the ethernet physical layer transceiver is normal, the data transmission communication state detection result data is used to indicate whether the data transmission condition of the ethernet physical layer transceiver is normal, the data reception communication state detection result data is used to indicate whether the data reception condition of the ethernet physical layer transceiver is normal, the ethernet physical layer transceiver temperature power consumption detection result data is used to indicate whether the temperature and power consumption of the ethernet physical layer transceiver are normal, and whether an open circuit or a short circuit is formed between the interconnected ethernet physical layer transceivers or not is used to indicate that a path state between each pair of differential signals between the interconnected ethernet physical layer transceivers is normal, open circuit or short circuit. It should be noted that the link detection result data, such as data transmission communication state detection result data and data reception communication state detection result data, need to be obtained only when the target ethernet physical layer transceiver (i.e., the ethernet physical layer transceiver to be tested) performs data transceiving, and the network communication signal-to-noise ratio detection result data, the ethernet physical layer transceiver temperature power consumption detection result data, and whether there is an open circuit or a short circuit between the interconnected ethernet physical layer transceivers can be obtained without performing data transceiving on the target ethernet physical layer transceiver (i.e., the ethernet physical layer transceiver to be tested).
For example, the ethernet physical layer transceiver 102 can obtain the signal-to-noise ratio value of the communication link in which it is located in the network diagnostic test mode, and the ethernet physical layer transceiver 102 itself has the signal-to-noise ratio threshold, if the signal-to-noise ratio value obtained by the ethernet physical layer transceiver 102 is greater than its signal-to-noise ratio threshold, indicating that there is a risk of communication link abnormality, the ethernet physical layer transceiver 102 will compare the signal-to-noise ratio value obtained by it with its own signal-to-noise ratio threshold value to obtain network communication signal-to-noise ratio detection result data indicating whether its signal-to-noise ratio is abnormal or not and store the data in a register of the ethernet physical layer transceiver 102, in this way, the display controller 100 can obtain the snr detection result data of the network communication in the register 102 of the ethernet phy transceiver, for determining the communication link status between the ethernet physical layer transceiver 102 and the ethernet physical layer transceiver 202.
It should be noted that, the process of determining the network communication state based on the link detection result data may be executed by the display controller 100, or the link detection result data may be sent to the upper computer software on a controller, such as a PC, through the display controller 100, so that the upper computer software determines the communication link state based on the link detection result data and displays the communication link state.
In the foregoing solution, the embodiment of the present invention may not only implement detection of a communication link state by checking a data packet to determine whether a packet loss condition exists, but also determine whether a communication link has a communication abnormal risk by triggering an ethernet physical layer transceiver to perform link detection through the obtained link detection result data, thereby implementing preliminary determination of the communication link state.
[ second embodiment ]
As shown in fig. 3, a second embodiment of the present invention provides a communication state detection method. The communication state detection method is suitable for a module controller of a display screen control system, and the display screen control system also comprises a display controller electrically connected with the module controller; the communication state detection method includes, for example:
s22, receiving a data packet sent by the display controller, wherein the data packet comprises a first verification value obtained by the display controller according to a preset verification mode;
s24, unpacking the data packet to obtain processed data, and verifying the processed data according to the preset verification mode to obtain a second verification value;
s26, judging whether the second check value is matched with the first check value or not, and carrying out error data packet quantity statistics according to the judgment result to obtain a check statistical result; and
s28, periodically sending the checking statistic result to the display controller so that the display controller can determine the communication link state between the display controller and the module controller.
For the convenience of understanding the present invention, the communication state detection method of the present embodiment will be described in detail below with reference to fig. 2 again. The detailed structure of the display screen control system shown in fig. 2 is not repeated herein, and specific reference may be made to the detailed description in the first embodiment.
In executing the communication status detection method according to the embodiment of the present invention, the module controller 200 (for example, the programmable logic device 201 of the module controller 200) first receives a data packet sent by the display controller 100, where the data packet includes a first check value obtained by the display controller according to a preset check mode. It should be noted that the predetermined Check manner includes a sum Check, a Cyclic Redundancy Check (CRC) or a parity Check, and of course, the predetermined Check manner may be other manners, and the embodiment of the present invention is not limited in detail herein.
Next, the module controller 200 unpacks the data packet to obtain processed data, and verifies the processed data according to the preset verification manner to obtain a second verification value.
Then, the module controller 200 determines whether the second check value matches the first check value, and performs statistics on the number of error data packets according to the determination result to obtain a check statistical result. For example, the module controller 200 may determine whether the second check value and the first check value match, for example, whether the second check value is the same as or equivalent to the first check value.
Finally, the module controller 200 periodically sends the verification statistics to the display controller for the display controller to determine the communication link status between the display controller and the module controller.
In the communication status detecting method according to the embodiment of the present invention, before the module controller 200 receives the data packet from the display controller 100 (i.e. before step S22), the module controller 200 (e.g. the programmable logic device 201 of the module controller 200) may further receive a link detection trigger instruction from the display controller 100, and then the module controller 200 controls the ethernet physical layer transceiver 202 to perform link detection or controls the ethernet physical layer transceiver 202 to perform network communication with the ethernet transceiver 102 to obtain link detection result data from the ethernet physical layer transceiver 202 based on the link detection trigger instruction; finally, the module controller 200 transmits the link detection result data to the display controller 100. Here, in the embodiment of the present invention, the determination of whether the communication link has a communication abnormal risk is achieved by acquiring the link detection result data of the ethernet physical layer transceiver, so as to achieve the preliminary determination of the communication state.
For example, after the module controller 200 (e.g., the programmable logic device 201 of the module controller 200) receives the link detection trigger command sent by the display controller 100, the module controller 200 may set the ethernet physical layer transceiver 202 to a network Diagnostic Test (CDT) mode based on the link detection trigger command, so as to trigger the ethernet physical layer transceiver 202 to perform link detection or control the ethernet physical layer transceiver 202 to perform network communication with the ethernet physical layer transceiver 102 to obtain link detection result data from the ethernet physical layer transceiver 202. It should be noted that the name of the test mode set by some ethernet physical layer transceivers, such as the network PHY chip, is not "CDT" mode, and therefore, the embodiments of the present invention do not limit this, and only the example of using the test function of the ethernet physical layer transceiver to obtain the link detection result data is described herein.
As mentioned above, the link detection result data includes, for example, one or more of network communication signal-to-noise ratio detection result data, data transmission communication state detection result data, data reception communication state detection result data, ethernet physical layer transceiver temperature power consumption detection result data, and data of whether an open circuit or a short circuit is formed between the interconnected ethernet physical layer transceivers. Specifically, the network communication snr detection result data is used to indicate whether the snr of the ethernet physical layer transceiver is normal, the data transmission communication state detection result data is used to indicate whether the data transmission condition of the ethernet physical layer transceiver is normal, the data reception communication state detection result data is used to indicate whether the data reception condition of the ethernet physical layer transceiver is normal, the ethernet physical layer transceiver temperature power consumption detection result data is used to indicate whether the temperature and power consumption of the ethernet physical layer transceiver are normal, and whether an open circuit or a short circuit is formed between the interconnected ethernet physical layer transceivers or not is used to indicate that a path state between each pair of differential signals between the interconnected ethernet physical layer transceivers is normal, open circuit or short circuit. It should be noted that the link detection result data, such as data transmission communication state detection result data and data reception communication state detection result data, need to be obtained only when the target ethernet physical layer transceiver (i.e., the ethernet physical layer transceiver to be tested) performs data transceiving, and the network communication signal-to-noise ratio detection result data, the ethernet physical layer transceiver temperature power consumption detection result data, and whether there is an open circuit or a short circuit between the interconnected ethernet physical layer transceivers can be obtained without performing data transceiving on the target ethernet physical layer transceiver (i.e., the ethernet physical layer transceiver to be tested).
In the foregoing solution, the embodiment of the present invention may not only implement detection of a communication link state by checking a data packet to determine whether a packet loss condition exists, but also determine whether a communication link has a communication abnormal risk by triggering an ethernet physical layer transceiver to perform link detection and using obtained link detection result data, thereby implementing preliminary determination of a communication link state.
[ third embodiment ]
As shown in fig. 4, a second embodiment of the present invention provides a display controller 400. The display controller 400 may, for example, be used to perform the communication link detection method described in the first embodiment. The display controller 400 may be used in a display screen control system including the display controller 400 and at least one module controller electrically connected to the display controller 400. The display controller 400 includes a data packet sending module 404, a check statistic result receiving module 405, and a communication link status determining module 406.
Specifically, the data packet sending module 404 is configured to send a data packet containing a first check value obtained according to a preset check manner to the at least one module controller.
The check statistic result receiving module 405 is configured to periodically receive a check statistic result obtained by the at least one module controller according to the data packet.
The communication link status determining module 406 is configured to determine a communication link status between the display controller and the at least one module controller according to the checking statistic result.
In light of the above, the display controller 400 may further include a data packet obtaining module 403, where the data packet obtaining module 403 may be configured to: acquiring image data; and checking the image data according to the preset checking mode to obtain the first checking value, and packing the packet header information, the image data and the first checking value to obtain the data packet, wherein the preset checking mode comprises sum checking, cyclic redundancy checking or parity checking.
Optionally, the data packet obtaining module 403 may be configured to: acquiring image or command data; and checking the image or command data and the packet header information according to the preset checking mode to obtain the first checking value, and packing the packet header information, the image or command data and the first checking value to obtain the data packet, wherein the preset checking mode comprises sum checking, cyclic redundancy checking or parity checking.
In light of the above, the display controller 400 may, for example, include a first ethernet physical layer transceiver, each of the module controllers may, for example, include a second ethernet physical layer transceiver, and the second ethernet physical layer transceiver is electrically connected to the first ethernet physical layer transceiver; the data packet is sent to the at least one module controller through the first Ethernet physical layer transceiver. The display controller 400 may further include a detection result data acquisition module 402. The detection result data obtaining module 402 is configured to obtain link detection result data in a register of the first ethernet physical layer transceiver and/or the second ethernet physical layer transceiver, for example, so as to determine a communication link status between the first ethernet physical layer transceiver and the second ethernet physical layer transceiver.
In addition, the display controller 400 may further include a detection trigger instruction transmitting module 401. The detection trigger instruction sending module 401 is configured to send a link detection trigger instruction to the first ethernet physical layer transceiver and/or the second ethernet physical layer transceiver to trigger the first ethernet physical layer transceiver and/or the second ethernet physical layer transceiver to perform link detection, for example.
For specific working processes and technical effects among the modules in the display controller 400 in this embodiment, reference is made to the description of the relevant steps in the foregoing first embodiment, and details are not repeated here.
[ fourth example ] A
As shown in fig. 5, a module controller 500 is provided according to a first embodiment of the present invention. The module controller 500 may be used in a display screen control system including the module controller 500 and a display controller electrically connected to the module controller 500. The module controller 500 is used, for example, to perform the communication link detection method described in the second embodiment. The module controller 500 may include a packet receiving module 502, a check value obtaining module 504, a check statistic result obtaining module 506, and a check statistic result sending module 508.
Specifically, the data packet receiving module 502 is configured to receive a data packet from the display controller, where the data packet includes a first check value obtained by the display controller according to a preset check mode.
The check value obtaining module 504 is configured to unpack the received data packet to obtain processed data, and check the processed data according to the preset check mode to obtain a second check value.
The check statistic result obtaining module 506 is configured to determine whether the second check value matches the first check value, and perform statistics on the number of error data packets according to the determination result to obtain a check statistic result.
The checking statistic result sending module 508 is configured to send the checking statistic result to the display controller so that the display controller can determine a communication link state between the display controller and the module controller.
In light of the above, the display controller includes a first ethernet physical layer transceiver, the module controller 500 includes a second ethernet physical layer transceiver, and the second ethernet physical layer transceiver is electrically connected to the first ethernet physical layer transceiver.
The module controller 500 may further include a detection result data acquisition and transmission module 501. The detection result data acquiring and transmitting module 501 is used for, for example: receiving a link detection trigger instruction sent by the display controller; controlling the second Ethernet physical layer transceiver to perform link detection or controlling the second Ethernet physical layer transceiver to perform network communication with the first Ethernet transceiver to obtain link detection result data from the second Ethernet physical layer transceiver based on the link detection trigger instruction; and sending the link detection result data to the display controller.
For the specific working process and technical effects among the modules in the communication state detection apparatus 500 in this embodiment, reference is made to the description of the related steps in the foregoing second embodiment, and details are not repeated here.
[ fifth embodiment ]
As shown in fig. 6, a display screen control system 600 according to a fourth embodiment of the present invention includes a display controller 602 and at least one module controller 604 electrically connected to the display controller 602, where the display controller 602 is, for example, the display controller 400 according to the third embodiment, and the module controller 604 is, for example, the module controller 500 according to the fourth embodiment.
For specific interaction processes and technical effects between the display controller 602 and the module controllers 604 (even between the module controllers 604), reference is made to the descriptions of the foregoing third embodiment and fourth embodiment, which are not described herein again.
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 embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. 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, each functional unit/module in the embodiments of the present invention may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one unit/module. The integrated units/modules may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units/modules.
The integrated units/modules, which are implemented in the form of software functional units/modules, 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 one or more processors of a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods described in the embodiments of the present application. 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 (10)
1. A communication state detection method is characterized in that the method is suitable for a display controller of a display screen control system, and the display screen control system further comprises at least one module controller electrically connected with the display controller; the communication state detection method comprises the following steps:
sending a data packet containing a first check value obtained according to a preset check mode to the at least one module controller;
periodically receiving a check statistic result obtained by the at least one module controller according to the data packet;
determining a communication link status between the display controller and the at least one module controller based on the verification statistics.
2. The method according to claim 1, further comprising, before the sending the data packet containing the first check value obtained according to the preset check manner to the at least one module controller:
acquiring image data; and
and checking the image data according to the preset checking mode to obtain the first checking value, and packing the packet header information, the image data and the first checking value to obtain the data packet, wherein the preset checking mode comprises sum checking, cyclic redundancy checking or parity checking.
3. The method according to claim 1, further comprising, before the sending the data packet containing the first check value obtained according to the preset check manner to the at least one module controller:
acquiring image or command data; and
and checking the image or command data and the header information according to the preset checking mode to obtain the first checking value, and packing the header information, the image or command data and the first checking value to obtain the data packet, wherein the preset checking mode comprises sum checking, cyclic redundancy checking or parity checking.
4. The communication status detecting method according to claim 1, wherein the display controller includes a first ethernet physical layer transceiver, each of the module controllers includes a second ethernet physical layer transceiver, and the second ethernet physical layer transceiver is electrically connected to the first ethernet physical layer transceiver; the data packet is sent to the at least one module controller through the first Ethernet physical layer transceiver;
before the sending the data packet including the first check value obtained according to the preset check mode to the at least one module controller, the communication state detection method further includes:
and acquiring link detection result data in a register of the first Ethernet physical layer transceiver and/or the second Ethernet physical layer transceiver for judging the communication link state between the first Ethernet physical layer transceiver and the second Ethernet physical layer transceiver.
5. The method according to claim 4, wherein before the obtaining the link detection result data in the register of the first ethernet physical layer transceiver and/or the second ethernet physical layer transceiver for determining the communication link status between the first ethernet physical layer transceiver and the second ethernet physical layer transceiver, the method further comprises:
sending a link detection triggering instruction to the first Ethernet physical layer transceiver and/or the second Ethernet physical layer transceiver to trigger the first Ethernet physical layer transceiver and/or the second Ethernet physical layer transceiver to perform link detection.
6. A communication state detection method is characterized in that the communication state detection method is suitable for a module controller of a display screen control system, the display screen control system further comprises a display controller which is electrically connected with the module controller, and the method comprises the following steps:
receiving a data packet sent by the display controller, wherein the data packet comprises a first check value obtained by the display controller according to a preset check mode;
unpacking the data packet to obtain processed data, and verifying the processed data according to the preset verification mode to obtain a second verification value;
judging whether the second check value is matched with the first check value or not, and counting the number of error data packets according to the judgment result to obtain a check statistical result; and
periodically sending the verification statistics to the display controller for the display controller to determine a communication link status between the display controller and the module controller.
7. The communication status detecting method according to claim 6, wherein the display controller comprises a first Ethernet physical layer transceiver, the module controller comprises a second Ethernet physical layer transceiver, and the second Ethernet physical layer transceiver is electrically connected to the first Ethernet physical layer transceiver;
before receiving the data packet sent by the display controller, the communication state detection method further includes:
receiving a link detection trigger instruction sent by the display controller;
controlling the second Ethernet physical layer transceiver to perform link detection or controlling the second Ethernet physical layer transceiver to perform network communication with the first Ethernet transceiver to obtain link detection result data from the second Ethernet physical layer transceiver based on the link detection trigger instruction;
and sending the link detection result data to the display controller.
8. A display controller for performing the communication state detection method according to any one of claims 1 to 5.
9. A module controller for performing the communication state detection method according to claim 6 or 7.
10. A display screen control system comprising a display controller according to claim 8 and at least one module controller according to claim 9 electrically connected to the display controller.
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