CN209962670U - Display control card and display system - Google Patents
Display control card and display system Download PDFInfo
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- CN209962670U CN209962670U CN201920809206.7U CN201920809206U CN209962670U CN 209962670 U CN209962670 U CN 209962670U CN 201920809206 U CN201920809206 U CN 201920809206U CN 209962670 U CN209962670 U CN 209962670U
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- control card
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Abstract
The embodiment of the utility model discloses display control board and a display system. Wherein, the display control card for example includes: a programmable logic device; the microcontroller is connected with the programmable logic device; the network physical layer transceiver chip is connected with the programmable logic device; an isolation capacitor bank; the network port is connected with the network physical layer transceiver chip through the isolation capacitor bank; and the display signal output interface is connected with the programmable logic device. The embodiment of the utility model discloses display control card can avoid network transformer self volume great drawback that is unfavorable for the miniaturization of display control card.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a display control board and a display system.
Background
The LED display screen control system is mainly used for receiving a video source from a front-end computer, storing the received video source into a memory, and then generating serial display data and a scanning control time sequence which can be identified by the LED display screen in a partition driving mode. The LED display screen control system mainly comprises a sending card, a receiving card (display control card), an LED lamp panel and the like.
The signal isolation method of the current receiving card adopts a network transformer to carry out signal isolation, but the network transformer cannot be applied to a miniaturized receiving card due to the limitation of the process and the structural size of the network transformer, namely the miniaturization of the receiving card is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned prior art not enough, provide a display control board and a display system.
In order to achieve the above object, an embodiment of the present invention provides a display control card, including: a programmable logic device; the microcontroller is connected with the programmable logic device; the network physical layer transceiver chip is connected with the programmable logic device; an isolation capacitor bank; the network port is connected with the network physical layer transceiver chip through the isolation capacitor bank; and the display signal output interface is connected with the programmable logic device.
In an embodiment of the present invention, the display control card includes: the first circuit board, wherein the network port and the display signal output interface are arranged on the first circuit board; and the second circuit board is fixedly connected to the first circuit board in an inserted manner, wherein the programmable logic device, the microcontroller, the network physical layer transceiver chip and the isolation capacitor bank are arranged on the second circuit board.
In an embodiment of the present invention, the two ends of each capacitor in the isolation capacitor bank are respectively connected to one socket pin of the socket and one chip pin of the cyber physical layer transceiver chip correspondingly connected to the socket pin.
In an embodiment of the present invention, the number of the net ports is two, and the isolation capacitor bank includes sixteen capacitors.
In an embodiment of the present invention, each capacitor in the isolation capacitor bank is 0.1 microfarads.
In an embodiment of the present invention, the display control card further includes: a temperature and voltage sampling circuit, a volatile memory and a non-volatile memory; the microcontroller is respectively connected with the temperature and voltage sampling circuit and the nonvolatile memory; the programmable logic device is also respectively connected with the volatile memory and the nonvolatile memory.
In an embodiment of the present invention, the temperature and voltage sampling circuit, the volatile memory, and the nonvolatile memory are disposed on the second circuit board.
In an embodiment of the present invention, the display control card further includes: and the key and the indicator light are connected with the programmable logic device and are arranged on the first circuit board.
In an embodiment of the present invention, the display signal output interface is a flat cable socket.
Furthermore, an embodiment of the present invention provides a display system, including: a display control card as in any one of the preceding; and the LED lamp panel is connected with the display signal output interface.
The technical scheme can have the following advantages or beneficial effects: the embodiment of the utility model provides a display control card has avoided using network transformer to carry out signal isolation among the current correlation technique scheme and has been unfavorable for the miniaturized drawback of display control card, is favorable to the miniaturization of display control card, reduce cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be 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 that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display control card according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display control card according to a first embodiment of the present invention;
fig. 3 is a diagram of a capacitance connection relationship of a display control card according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display control card according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display system according to a second embodiment of the present invention.
[ description of reference ]
10: displaying a control card; 101: a circuit board; 102: a circuit board; 11: a programmable logic device; 12: a microcontroller; 13: a network physical layer transceiver chip; 14: an isolation capacitor bank; 15: a network port; 16: a display signal output interface; 17: a temperature and voltage sampling circuit; 18: a non-volatile memory; 19: a volatile memory; 20: keys and indicator lights;
30: a display system; 31: displaying a control card; 33: LED lamp panel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The invention will be described with reference to the accompanying drawings in conjunction with embodiments.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the division of the embodiments in the present invention is only for convenience of description and should not be construed as a limitation, and features in various embodiments may be combined and referred to each other without contradiction.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, a first embodiment of the present invention provides a display control card. As shown in fig. 1, display control card 10 includes, for example: programmable logic device 11, microcontroller 12, network physical layer transceiver chip 13, isolation capacitor bank 14, network interface 15 and display signal output interface 16.
The microcontroller 12 is connected to the programmable logic device 11. The network physical layer transceiver chip 13 is connected to the programmable logic device 11. The network port 15 is connected with the network physical layer transceiver chip 13 through the isolation capacitor bank 14. The display signal output interface 16 is connected to the programmable logic device 11.
Further, as shown in fig. 2, the display control card 10 further includes, for example: circuit board 101 and circuit board 102. Wherein the network port 15 and the display signal output interface 16 are provided on the circuit board 101. The circuit board 102 is fixed to the circuit board 101 by plugging, wherein the programmable logic device 11, the microcontroller 12, the network physical layer transceiver chip 13 and the isolation capacitor bank 14 are arranged on the circuit board 102.
The circuit board 101 and the circuit board 102 may be fixed by a male connector socket and a female connector socket. For example, the circuit board 101 and the related components thereon form an adapter board, the circuit board 102 and the related components thereon form a sub-display control card, and the adapter board and the sub-display control card form the display control card 10 disclosed in this embodiment. The adapter board is connected and fixed by the paired male connector seats and the paired female connector seats of the sub display control card.
Furthermore, two ends of each capacitor in the isolation capacitor bank 14 are respectively connected to one network port pin of the network port 15 and one chip pin of the network physical layer transceiver chip 13 correspondingly connected to the network port 15 pin. The number of the net ports 15 is two, for example, and the isolation capacitor bank 14 includes sixteen capacitors, for example. And each capacitor in the isolation capacitor bank 14 is 0.1 microfarads. The specific circuit relationship diagram is shown in fig. 3.
Further, as shown in fig. 4, the display control card 10 further includes, for example: a temperature and voltage sampling circuit 17, a non-volatile memory 18 and a volatile memory 19. The microcontroller 12 is connected to a temperature and voltage sampling circuit 17 and a nonvolatile memory 18, respectively. The programmable logic device 11 is also connected to a volatile memory 19 and a non-volatile memory 18, respectively.
Further, a temperature and voltage sampling circuit 17, a nonvolatile memory 18, and a volatile memory 19 are provided on the circuit board 102.
Further, as shown in fig. 4, the display control card 10 further includes, for example, a key and an indicator light 20 connected to the programmable logic device 11 and disposed on the circuit board 101.
Further, the Circuit Board 101 and the Circuit Board 102 are, for example, a PCB (Printed Circuit Board). The Programmable logic device 11 is, for example, an FPGA (Field-Programmable Gate Array), such as an Altera EP3C16F484 series chip. The microcontroller 12 is, for example, an MCU (microcontrollerunit), in particular, an MCU based on an ARM core, such as a chip of the STM32F4 series. The network PHY layer transceiver chip 13 is, for example, a network PHY chip, specifically, a two-gigabit network PHY chip. The port 15 is, for example, an RJ45 port. The nonvolatile memory 18 is, for example, an SPI Flash (Flash memory). The volatile Memory 19 is, for example, a Synchronous Dynamic Random Access Memory (SDRAM). The display signal output interface 16 is, for example, a flat cable socket.
The display control card 10 is equivalent to a receiving card or a scanning card in an LED display screen control system, and can be installed inside an LED box (including one or more LED lamp panels) to drive the LED lamp panels.
To further understand the display control card 10 disclosed in the present embodiment, the following briefly describes the operation of the display control card 10 provided in the present embodiment with reference to fig. 4: when the display control card 10 is powered on, the microcontroller 12 reads the programmable logic device 11, such as an FPGA program, from the non-volatile memory 18, and loads the programmable logic device 11. When the programmable logic device 11 is loaded, the display control card 10 enters a normal operation mode, data is received through the network physical layer transceiver chip 13, the programmable logic device 11 extracts data required by itself from a received data packet and caches the data in the volatile memory 19, and meanwhile, other data are continuously sent to the next-stage display control card through the network physical layer transceiver chip 13 in a cascade mode; the programmable logic device 11 extracts data from the volatile memory 19, performs processing such as gray extraction and correction, and outputs a display control signal and an RGB data set through the display signal output interface 16, thereby normally lighting the LED lamp panel. The non-volatile memory 18 may also store calibration data for the LED panel and various parameters associated therewith, which are accessed by the programmable logic device 11 during data processing to generate correct scan data. In the operation process, the microcontroller 12 can also collect and display the temperature and power supply information on the control card 10, and send the information to the programmable logic device 11, and the information can be acquired through upper computer software.
In summary, the display control card provided in this embodiment avoids the disadvantage that signal isolation using a network transformer is not favorable for miniaturization of the display control card in the prior art, and is favorable for miniaturization of the display control card, thereby reducing cost.
[ second embodiment ]
Referring to fig. 5, a second embodiment of the present invention provides a display system. As shown in fig. 5, the display system 30 includes, for example: a display control card 31 and an LED lamp panel 33.
The display control card 31 is, for example, the display control card 10 of the first embodiment. The display control card 31 can refer to the first embodiment, and for brevity, the display control card 31 will not be described repeatedly. It should be noted that the display control card 31 of the present embodiment is also called a receiving card or a scanning card in the LED display screen control system. The LED lamp panel 33 is connected to the display signal output interface in the display control card 31.
The display signal output interface is, for example, a flat cable socket. The LED lamp panels 33 can be combined with the display control card 10 to form an LED box body, and the LED box bodies can be spliced into an LED display screen.
In summary, the display control card in the display system provided in this embodiment avoids the disadvantage that signal isolation using a network transformer is not favorable for miniaturization of the display control card in the prior art, and is favorable for miniaturization of the display control card and cost reduction.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed system and apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the 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 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.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A display control card, comprising:
a programmable logic device;
the microcontroller is connected with the programmable logic device;
the network physical layer transceiver chip is connected with the programmable logic device;
an isolation capacitor bank;
the network port is connected with the network physical layer transceiver chip through the isolation capacitor bank; and
and the display signal output interface is connected with the programmable logic device.
2. The display control card of claim 1, comprising:
the first circuit board, wherein the network port and the display signal output interface are arranged on the first circuit board; and
and the second circuit board is fixedly connected to the first circuit board in an inserted manner, wherein the programmable logic device, the microcontroller, the network physical layer transceiver chip and the isolation capacitor bank are arranged on the second circuit board.
3. The display control card of claim 1, wherein two ends of each capacitor in the isolated capacitor bank are respectively connected to a net port pin of the net port and a chip pin of the cyber physical layer transceiver chip correspondingly connected to the net port pin.
4. The display control card of claim 3, wherein the number of the net ports is two, and the isolation capacitor bank comprises sixteen capacitors.
5. The display control card of claim 4, wherein each of said capacitors in said isolated capacitor bank is 0.1 microfarads.
6. The display control card of claim 2, further comprising: a temperature and voltage sampling circuit, a volatile memory and a non-volatile memory; the microcontroller is respectively connected with the temperature and voltage sampling circuit and the nonvolatile memory; the programmable logic device is also respectively connected with the volatile memory and the nonvolatile memory.
7. The display control card of claim 6, wherein the temperature and voltage sampling circuit, the volatile memory and the non-volatile memory are disposed on the second circuit board.
8. The display control card of claim 7, further comprising: and the key and the indicator light are connected with the programmable logic device and are arranged on the first circuit board.
9. The display control card of claim 1, wherein the display signal output interface is a flat cable socket.
10. A display system, comprising:
a display control card according to any of claims 1-9; and
and the LED lamp panel is connected with the display signal output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920809206.7U CN209962670U (en) | 2019-05-30 | 2019-05-30 | Display control card and display system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920809206.7U CN209962670U (en) | 2019-05-30 | 2019-05-30 | Display control card and display system |
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| CN209962670U true CN209962670U (en) | 2020-01-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113470563A (en) * | 2020-03-13 | 2021-10-01 | 西安诺瓦星云科技股份有限公司 | Display screen correction system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113470563A (en) * | 2020-03-13 | 2021-10-01 | 西安诺瓦星云科技股份有限公司 | Display screen correction system and method |
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