CN114596810A - Display control device and LED display system - Google Patents
Display control device and LED display system Download PDFInfo
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- CN114596810A CN114596810A CN202011311551.1A CN202011311551A CN114596810A CN 114596810 A CN114596810 A CN 114596810A CN 202011311551 A CN202011311551 A CN 202011311551A CN 114596810 A CN114596810 A CN 114596810A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The invention discloses a display control device and an LED display system. The display control device includes, for example: a sending card and a rate adapter. The rate adapter is electrically connected to the sending card and has a plurality of data transmission interfaces. Each data transmission interface is used for electrically connecting a receiving card, and the receiving card is used for driving the LED display module to display. The rate adapter is used for receiving the data output by the sending card at a first transmission rate and distributing the received data to at least one target data transmission interface in the plurality of data transmission interfaces so that the at least one target data transmission interface can output the data at a second transmission rate respectively, and the sum of the second transmission rates of the at least one target data transmission interface is less than or equal to the first transmission rate. Therefore, the embodiment of the invention can adapt to rate mismatching between the interfaces and simultaneously ensure the synchronism of the driving picture display of the receiving card.
Description
Technical Field
The invention relates to the technical field of display control, in particular to a display control device and an LED display system.
Background
With the development of LED (Light Emitting Diode) display technology, LED display screens are currently applied to various fields due to their advantages of low cost, low power consumption, high visibility, freedom in assembly, etc.
Generally, an LED display system includes an LED display screen and a display control device, where the LED display screen includes one or more receiving cards (or called module controllers) and LED display modules carried by the receiving cards, and each receiving card is electrically connected to the display control device to receive control to drive the corresponding LED display module to display. For a single LED display module, it typically includes a plurality of LED display pixels, and each LED display pixel includes, for example, a red, green, and blue three-color LED.
As for the display control device, in a related technical scheme, the display control device comprises a sending card, the sending card supports 1G/S or 5G/S transmission rate, the network port of the connected receiving card must also be 1G/S or 5G/S, and the 1G/S network port and the 5G/S network port cannot be used in a mixed way, otherwise, the product performance specification is reduced because the network port rate is not matched; in another related technical scheme, the optical port of the transmitting card is connected with the network port of the receiving card through the photoelectric converter, taking the optical port of the transmitting card as 10G/S as an example, the photoelectric converter necessarily converts the 10G/S optical port into 25G/S network ports or 10 1G/S network ports, if the network ports are not completely applied, the product performance or specification can be reduced, full load cannot be achieved, and meanwhile, the optical port-to-network port is not expanded too well.
Disclosure of Invention
Accordingly, to overcome at least some of the disadvantages and drawbacks of the related art, embodiments of the present invention provide a display control apparatus and an LED display system.
Specifically, an embodiment of the present invention provides a display control apparatus, including: sending the card; and the speed adapter is electrically connected with the sending card and is provided with a plurality of data transmission interfaces, wherein each data transmission interface is used for electrically connecting the receiving card, and the receiving card is used for driving the LED display module to display. The rate adapter is used for receiving the data output by the sending card at a first transmission rate and distributing the received data to at least one target data transmission interface in the plurality of data transmission interfaces so that the at least one target data transmission interface can output the data at a second transmission rate respectively, and the sum of the second transmission rates of the at least one target data transmission interface is less than or equal to the first transmission rate.
In the embodiment of the invention, the rate adapter is arranged, and the rate adapter performs rate adaptation on each target data transmission interface according to the transmission rate (second transmission rate) of each target data transmission interface in the data transmission interfaces for the large data transmission rate (first transmission rate) of the sending card, and the sum of the transmission rates of all the target data transmission interfaces does not exceed the first transmission rate, so that the sending card does not need to care about the rate of each target data transmission interface, the rates of the rate adapter adaptation interfaces are not matched, the number of the data transmission interfaces can be increased, and the whole display control device is not limited to the interface rate.
In one embodiment of the invention, the rate adaptor allocates the received data to the at least one target data transmission interface in a time-sliced manner.
In one embodiment of the present invention, the number of the at least one target data transmission interface is plural, the sum of the second transmission rates of the plural target data transmission interfaces is equal to the first transmission rate, and the second transmission rates of the plural target data transmission interfaces are the same; and the rate adapter allocates the received data to the target data transmission interfaces in sequence by adopting a mode of equal length of each time interval.
In an embodiment of the present invention, the rate adapter specifically allocates the received data to each of the target data transmission interfaces by a specific time interval, and a value of the specific time interval depends on a ratio of the first transmission rate to the second transmission rate of the target data transmission interface. In this way, in the case of allocating received data to one target data transmission interface at intervals of a specific time length, received data may also be allocated to another or a plurality of target data transmission interfaces within the specific time length (or idle time). Here, for a plurality of target data transmission interfaces, if the second transmission rates are equal, the specific time duration is equal; if the second transmission rates are not equal, the specific durations are correspondingly not equal.
In an embodiment of the present invention, the number of the at least one target data transmission interface is plural, a sum of the second transmission rates of the plural target data transmission interfaces is less than or equal to the first transmission rate, and the second transmission rates of the plural target data transmission interfaces are different from each other.
In one embodiment of the present invention, the sending card has a second data transmission interface, the adaptor has a third data transmission interface, the third data transmission interface is electrically connected to the second data transmission interface, and the adaptor receives data output by the sending card through the third data transmission interface at the first transmission rate.
In one embodiment of the invention, the transmitting card comprises a video input interface circuit, a programmable logic device electrically connected with the video input interface circuit, and a first signal transceiver electrically connected between the programmable logic device and the second data transmission interface; the rate adapter comprises a controller, a second signal transceiver electrically connected between the controller and the third data transmission interface, and a plurality of third signal transceivers electrically connected between the controller and the plurality of data transmission interfaces, respectively; the controller includes a programmable logic device or an application specific integrated circuit chip.
In one embodiment of the present invention, the first signal transceiver is an optical module, the second signal transceiver is an optical module, and each of the third signal transceivers includes an ethernet PHY chip.
In one embodiment of the invention, the transmitter card has at least one daughter card connector to which the rate adapter is in the form of a daughter card and is plugged in a one-to-one fashion.
In addition, an LED display system provided in an embodiment of the present invention includes, for example: the LED display screen is provided with a plurality of LED display modules and a plurality of receiving cards for driving the LED display modules to display; the display control device according to any one of the embodiments is configured to drive and control the LED display panel to display an image.
As can be seen from the above, the above technical solution may have one or more of the following advantages: the embodiment of the invention carries out rate adaptation on each target data transmission interface according to the transmission rate (second transmission rate) of each target data transmission interface in the data transmission interfaces for the large data transmission rate (first transmission rate) of the sending card by arranging the rate adapter, and the sum of the transmission rates of all the target data transmission interfaces does not exceed the first transmission rate, so that the sending card does not need to care about the rate of each target data transmission interface, the rates of the rate adapter adaptation interfaces are not matched, and the synchronism of the driving picture display of the receiving card can be ensured. In addition, the number of the data transmission interfaces can also be increased, and the whole display control device is not limited to the interface rate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display control apparatus according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the transmitter card shown in fig. 1.
Fig. 3 is a schematic diagram of the internal structure of the rate adapter shown in fig. 1.
Fig. 4 is a schematic diagram illustrating a data allocation manner of the rate adaptor shown in fig. 1.
Fig. 5 is a schematic diagram illustrating another data allocation scheme of the rate adaptor shown in fig. 1.
Fig. 6 is a schematic structural diagram of another display control device according to the first embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an LED display system according to a second embodiment of the present invention.
Fig. 8 is a schematic structural diagram of an embodiment of the LED display system shown in fig. 7.
Fig. 9 is a schematic structural diagram of another embodiment of the LED display system shown in fig. 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, a display control apparatus 10 according to an embodiment of the present invention includes, for example, a transmitting card 11 and a rate adaptor 13.
Wherein the rate adaptor 13 is electrically connected to the sending card 11 and has a plurality of data transmission interfaces 130. Each of the data transmission interfaces 130 is used to electrically connect with a receiving card, and the receiving card is used to drive the LED display module to display. The receiving card here typically includes a network port, a programmable logic device, an ethernet PHY chip electrically connected between the network port and the programmable logic device, and a connector such as pin header/pin header interface electrically connected to the programmable logic device and used for connecting the LED display module; however, the embodiment of the present invention is not limited thereto, and other existing mature circuit structures of the receiving card, the module controller, or the scanning card may also be adopted. Furthermore, the LED display module herein is, for example, a full-color RGB LED display module, and includes a plurality of LED display pixels, and a single LED display pixel includes red (R), green (G), and blue (B) LEDs, but the embodiment of the invention is not limited thereto, and the LED display module may also be a single-color LED display module, a two-color LED display module, or even more primary-color LED display modules.
Furthermore, the rate adaptor 13 is configured to receive data output by the sending card 11 at a first transmission rate, and allocate the received data to at least one target data transmission interface of the plurality of data transmission interfaces 130 for the at least one target data transmission interface to output at a second transmission rate, respectively, and a sum of the second transmission rates of the at least one target data transmission interface is less than or equal to the first transmission rate. It should be noted that the rate adaptor 13 may be a splitter configured with an optical port and a network port, or a splitter configured with a network port but not configured with an optical port, or may be an optical-to-electrical converter configured with an optical port and a network port, but the embodiment of the present invention is not limited thereto, and may also be other devices with a large input bandwidth (corresponding to a large input transmission rate) and a small output bandwidth (corresponding to a small output transmission rate); in addition, in a case where the at least one target data transmission interface is plural, the second transmission rates of the plural target data transmission interfaces may be the same or different, for example, each target data transmission interface is connected to a 1G/S network port receiving card, a 2G/S network port receiving card, or a 5G/S network port receiving card respectively so as to have the same transmission rate, or the plural target data transmission interfaces are connected to any two or three of the 1G/S network port receiving card, the 2G/S network port receiving card, and the 5G/S network port receiving card so as to have different transmission rates. In addition, it is worth mentioning that the at least one target data transmission interface is a data transmission interface (or called an online data transmission interface) actually connected with a receiving card among the plurality of data transmission interfaces 130, and needs to perform data interaction with the receiving card.
Referring to fig. 2, the transmitting card 11 includes, for example, a video input interface circuit 111, a programmable logic device 113, a first signal transceiver 115, and a second data transmission interface 117. The video input interface circuit 111 includes, for example, a digital video interface such as a DVI interface, an HDMI interface, a DP interface, and the like, and a video decoder such as a DVI decoder, an HDMI decoder, a DP decoder, and the like electrically connected between the digital video interface and the programmable logic device 113; alternatively, an SDI interface is included and is directly connected to the programmable logic device 113. The Programmable logic device 113 is electrically connected to the video input interface circuit 111, and includes, for example, a Field Programmable Gate Array (FPGA) device. The first signal transceiver 115 is electrically connected between the programmable logic device 113 and the second data transmission interface 117, which is, for example, an ethernet PHY chip such as a 5G ethernet PHY chip or a 10G ethernet PHY chip when the second data transmission interface 117 is a network port, or an optical module such as a 10G/S, 25G/S, 40G/S, or 100G/S optical module when the second data transmission interface 117 is an optical port, and may be in an SFP package or other package form.
Referring to fig. 3, the rate adaptor 13 further includes, for example, a third data transmission interface 132, a second signal transceiver 134, a controller 136, and a plurality of third signal transceivers 138. The third data transmission interface 132 is typically the same type of interface as the second data transmission interface of the sending card 11, such as an optical interface or an internet interface. The second signal transceiver 134 is electrically connected between the controller 136 and the third data transmission interface 132, and is an optical module such as a 10G/S, 25G/S, 40G/S or 100G/S optical module when the third data transmission interface 132 is an optical port, or is an ethernet PHY chip such as a 5G ethernet PHY chip or a 10G ethernet PHY chip when the third data transmission interface 132 is a network port. The controller 136 may comprise, for example, a programmable logic device such as an FPGA device, or may comprise an Application Specific Integrated Circuits (ASIC) chip. The plurality of third signal transceivers 138 are electrically connected between the controller 136 and the plurality of data transmission interfaces 130, respectively, and are, for example, ethernet PHY chips such as 1G ethernet PHY chip (transmission rate may be 1G/S), 2G ethernet PHY chip (transmission rate may be 2G/S), or 5G ethernet PHY chip (transmission rate may be 5G/S), respectively.
As described above, the operating principle of the rate adaptor 13 of this embodiment for implementing rate adaptation of each target data transmission interface in the multiple data transmission interfaces 130 is to buffer and periodically allocate the received data to each target data transmission interface, so that each target data transmission interface outputs data at the second transmission rate.
Specifically, as a specific embodiment of the present invention, the rate adaptor 13 allocates the received data to the at least one target data transmission interface, for example, in a time-division manner; to facilitate a clearer understanding of the time-sharing manner of the present embodiment, two data allocation manners of the rate adaptor 13 will be illustrated below with reference to fig. 4 and 5: the method comprises the steps of (a mode of equal length of each time period) and (a mode of spacing a specific time length).
[ equal length mode in each time period ]
As shown in fig. 3 and fig. 4, taking the third data transmission interface 132 of the rate adaptor 13 as a 10G/S optical port and taking ten data transmission interfaces 130 as target data transmission interfaces, i.e., 1G/S network ports 0 to 9 as an example, the sum of the transmission rates of the ten 1G/S network ports 0 to 9 is equal to the transmission rate of the 10G/S optical port, i.e., is in a full-tape-loading state. Since the 10G/S optical port is ten times of the transmission rate of the 1G/S network port, a certain time period (T1-T0) for receiving data by the 10G/S optical port is uniformly divided into ten, namely ten small time periods T0-T9, data received by the 10G/S optical port in each small time period (any one of T0-T9) can be continuously allocated to a certain network port, and the network port can continuously output data in ten small time periods T0-T9; therefore, all data received by the 10G/S optical port in the time period (T1-T0) can be sequentially distributed to the ten 1G/S network ports 0-9 in an isochronous rectangular manner. For example, (T1-T0) equals 1S (sec), for example, then T0-T9 respectively equal 0.1S. It should be noted that, when the optical port rate is 10G/S and the network port is 2G/S, a certain time period may be equally divided into five parts in the full-load state, or when the optical port rate is 10G/S and the network port is 5G/S, a certain time period may be equally divided into two parts in the full-load state, and so on; the sending card 11 sends the corresponding internet access data in a specified time period, and the rate adapter 13 can synchronously send the data to the receiving card in a fixed time period, so that the synchronism of the display picture of the receiving card is ensured. In addition, the transmission rate of the optical port is not limited to 10G/S, and may be 25G/S, 40G/S, or 100G/S, etc., and the embodiment of the present invention is not particularly limited herein.
[ spacing for a specific length of time ]
As shown in fig. 3 and fig. 5, taking as an example that the third data transmission interface 132 of the rate adaptor 13 is a 10G/S optical port, and a data transmission interface serving as a target data transmission interface in the plurality of data transmission interfaces 130 includes a 1G/S network port, at this time, the sum of the total transmission rates of all target data transmission interfaces of the rate adaptor 13 needs to be less than or equal to the transmission rate 10G/S of the optical port no matter whether the data transmission interface is in a full-tape loading state or not. Since the 10G/S optical port is ten times the transmission rate of the 1G/S network port, when the rate adaptor 13 receives the previous packet of data to be allocated to a certain target 1G/S network port from the transmitting card 11 through the 10G/S optical port for a time length of t, ten time lengths are required for the target 1G/S network port to output all the packets of data, and then the next packet of data required by the target 1G/S network port is received by the 10G/S optical port after the idle time with the time length equal to 9 t. In short, each time the sending card 11 sends one packet of data to a designated network port, timing is performed (that is, the idle time length is determined) based on the ratio of the transmission rate of the optical port to the transmission rate of the network port, and then the next packet of data continues to be allocated to the designated network port after the timing is completed. It should be noted that, in order to avoid wasting the bandwidth of the optical port, other data of the optical port may be received and distributed in a similar manner during the idle time; for example, if the transmission rate of another network port (named as a second network port herein for convenience of description) is 1G/S, a packet of data may be allocated to the second network port within the first time period t of the aforementioned idle time of 9t, and then a next packet of data may be allocated to the second network port after the interval of 9 t; or, the transmission rate of another port (named as a third port herein for convenience of description) is 2G/S, corresponding to an idle time of 4t (i.e., (10G/S ÷ 2G/S-1) × (t) ═ 4t), a packet of data may be allocated to the third port within the first time period t of the aforementioned idle time of 9t, and then a packet of data may be allocated to the third port at an interval of 4 t; alternatively, if the transmission rate of the other port (named as the fourth port herein for convenience of description) is 5G/S, corresponding to an idle time of 1t (i.e., (10G/S ÷ 5G/S-1) × (1 t)), one packet of data may be allocated to the fourth port within the first time period t of the aforementioned idle time of 9t, and then another packet of data may be allocated to the fourth port at an interval of 1 t. Furthermore, the transmission rate of the optical port is not limited to 10G/S, and may be 25G/S, 40G/S, 100G/S, or the like; the transmission rate of the network port is not limited to 1G/S, and can be 2G/S, 5G/S, etc. In addition, it should be noted that the plurality of target data transmission interfaces of the rate adaptor 13 may be a mixture of network ports with different transmission rates, for example, including any two or three of a 1G/S network port, a 2G/S network port and a 5G/S network port.
In addition, it should be noted that the rate adaptor 13 of the embodiment of the present invention is not limited to the form of a stand-alone device shown in fig. 1 and 3, and may also take the form of a daughter card. Referring to fig. 6, the transmitter card 11 has at least one daughter card connector 118, and the rate adapter 13 is in the form of a daughter card and is plugged to the daughter card connector 118 in a one-to-one fashion. Specifically, as shown in fig. 6, the transmitting card 11 includes a video input interface circuit 111, a programmable logic device 113 and a plurality of daughter card connectors 118, the programmable logic device 113 is electrically connected to the video input interface circuit 111, the plurality of daughter card connectors 118 are respectively electrically connected to the programmable logic device 113, and each daughter card connector 118 may be an optical receptacle or other connector form. Accordingly, the rate adaptor 13 includes a second connector 131, a controller 136, a plurality of third signal transceivers 138, and a plurality of data transmission interfaces 130, the second connector 131 being electrically connected to the controller 136 and being in the form of, for example, an optical port plug or other connector, and the plurality of third signal transceivers 138 being electrically connected between the controller 136 and the plurality of data transmission interfaces 130, respectively. As can be seen from fig. 6, the transmitting card 11 may be plugged with one or more rate adapters 13 in the form of daughter cards as required by the application.
In summary, in the embodiment of the present invention, by providing the rate adaptor 13, it performs rate adaptation on each target data transmission interface according to the transmission rate of each target data transmission interface (second transmission rate) in the data transmission interfaces 130 for the large transmission rate (first transmission rate) of the second data transmission interface 117 of the sending card 11, and the sum of the transmission rates of all the target data transmission interfaces does not exceed the transmission rate of the second data transmission interface 117, so that the sending card 11 does not need to care about the rate of each target data transmission interface, the rate adaptor 13 adapts rate mismatch between interfaces, the number of the data transmission interfaces 130 can also be increased, and the whole display control apparatus 10 is not limited to interface rates, for example, the transmission rates of the target data transmission interfaces can be configured as 1G/S, 2G/S, or, 5G/S or even 10G/S.
[ second embodiment ]
Referring to fig. 7, 8 and 9, an LED display system 70 according to an embodiment of the present invention includes: a display control device 10 and an LED display screen 71. The LED display screen 71 has a plurality of LED display modules 712 and a plurality of receiving cards 710 for driving the LED display modules 712 to display. Each of the LED display modules 712 includes, for example, one LED lamp panel or a plurality of LED lamp panels spliced together, and each LED lamp panel uses LEDs as display pixels; taking a single RGB display pixel as an example, it includes red, green and blue LEDs. The display control device 10 is configured to drive and control the LED display screen 71 to display an image, and includes a sending card 11 and a rate adaptor 13, and for specific structures and functions of the sending card 11 and the rate adaptor 13, reference may be made to the foregoing description related to the first embodiment shown in fig. 1 to 6, and therefore, no further description is given here.
As an example, fig. 8 shows two receiving cards 710 and two LED display modules 712 in the LED display system 70. As can be seen from fig. 8, the transmission rates between the two receiving cards 710 and the ports 4 and 5 are 2G/S and 1G/S, respectively; the rate adaptor 13 receives data from the transmitting card 11 at a rate of 10G/S and distributes the received data to the network ports 4 and 5 in a time-sharing manner, so that the network ports 4 output the distributed data to the corresponding receiving cards 710 at a rate of 2G/S and the network ports 5 output the distributed data to the corresponding receiving cards 710 at a rate of 1G/S.
As another example, fig. 9 shows two receiving cards 710 and two LED display modules 712 in the LED display system 70. As can be seen in FIG. 9, the transmitter card 11 has, for example, ten daughter card connectors 118, into which ten rate adapters 13, for example, rate adapters 0-9 in the form of daughter cards, can be plugged in; the two receiving cards 710 are, for example, respectively connected to the data transmission interfaces of the rate adapter 0 and the rate adapter 1, and respectively electrically connected to the two LED display modules 712; both rate adapter 0 and rate adapter 1 receive data from a transmitting card through daughtercard connector 118 at, for example, 10G/S rate and perform rate adaptation to output data to a corresponding receiving card 710 using 5G/S rate and 1G/S rate, respectively.
It should be noted that the single data transmission interface 130 of the rate adaptor 13 is not limited to be connected to one receiving card, and may be connected to a plurality of receiving cards in cascade.
It should be understood that the foregoing embodiments are merely exemplary of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and used without conflict between technical features and structures and without departing from 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 display control apparatus, characterized by comprising:
sending the card;
the speed adapter is electrically connected with the sending card and is provided with a plurality of data transmission interfaces, wherein each data transmission interface is used for electrically connecting a receiving card, and the receiving card is used for driving the LED display module to display;
the rate adapter is used for receiving data output by the sending card at a first transmission rate and distributing the received data to at least one target data transmission interface in the plurality of data transmission interfaces so that the at least one target data transmission interface can output the data at a second transmission rate respectively, and the sum of the second transmission rates of the at least one target data transmission interface is less than or equal to the first transmission rate.
2. The display control apparatus of claim 1, wherein the rate adaptor allocates the received data to the at least one target data transmission interface in a time-sliced manner.
3. The display control apparatus according to claim 2, wherein the at least one target data transmission interface is plural in number, a sum of the second transmission rates of the plural target data transmission interfaces is equal to the first transmission rate, and the second transmission rates of the plural target data transmission interfaces are the same; and the rate adapter allocates the received data to the target data transmission interfaces in sequence by adopting a mode of equal length of each time interval.
4. The display control apparatus as claimed in claim 2, wherein the rate adapter allocates the received data to each of the target data transmission interfaces at intervals of a specific duration, and a value of the specific duration depends on a ratio of the first transmission rate to the second transmission rate of the target data transmission interface.
5. The display control apparatus according to claim 4, wherein the at least one target data transfer interface is plural in number, a sum of the second transfer rates of the plural target data transfer interfaces is smaller than or equal to the first transfer rate, and the second transfer rates of the plural target data transfer interfaces are different from each other.
6. The display control apparatus according to any one of claims 1 to 5, wherein the transmitter card has a second data transmission interface, the adaptor has a third data transmission interface electrically connected to the second data transmission interface, and the adaptor receives data output from the transmitter card at the first transmission rate through the third data transmission interface.
7. The display control apparatus of claim 6, wherein the transmitter card comprises a video input interface circuit, a programmable logic device electrically connected to the video input interface circuit, and a first signal transceiver electrically connected between the programmable logic device and the second data transmission interface; the rate adapter comprises a controller, a second signal transceiver electrically connected between the controller and the third data transmission interface, and a plurality of third signal transceivers electrically connected between the controller and the plurality of data transmission interfaces, respectively; the controller includes a programmable logic device or an application specific integrated circuit chip.
8. The display control apparatus according to claim 7, wherein the first signal transceiver is an optical module, the second signal transceiver is an optical module, and each of the third signal transceivers includes an ethernet PHY chip.
9. A display control apparatus according to any one of claims 1 to 5, characterised in that the transmitter card has at least one daughter card connector to which the rate adaptor is in the form of a daughter card and is plugged in a one-to-one manner.
10. An LED display system, comprising:
the LED display screen is provided with a plurality of LED display modules and a plurality of receiving cards for driving the LED display modules to display; and
the display control device according to any one of claims 1 to 9, configured to drive and control the LED display panel to perform image display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011311551.1A CN114596810A (en) | 2020-11-20 | 2020-11-20 | Display control device and LED display system |
Applications Claiming Priority (1)
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