CN112653850A - Adapter card, display device and module controller - Google Patents
Adapter card, display device and module controller Download PDFInfo
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- CN112653850A CN112653850A CN201910969833.1A CN201910969833A CN112653850A CN 112653850 A CN112653850 A CN 112653850A CN 201910969833 A CN201910969833 A CN 201910969833A CN 112653850 A CN112653850 A CN 112653850A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 88
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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Abstract
The embodiment of the invention relates to an adapter card, which comprises the following components: a circuit board; the control card connector is arranged on the circuit board; the signal converters are electrically connected with the control card connector, and each signal converter is used for receiving the display data and the control signal input by the control card connector and converting the display data and the control signal into a target format electric signal; and the wireless transmission chips are respectively and electrically connected with the signal converters, each wireless transmission chip is used for converting the target format electric signal into an electromagnetic signal and sending the electromagnetic signal to the display module in a wireless mode, and the working frequency of each wireless transmission chip is positioned in a millimeter wave frequency band. The embodiment of the invention also provides a display device adopting the adapter card and a module controller. Therefore, the embodiment of the invention can realize the wireless transmission between the module controller and the display module, save the structural space of the display module and facilitate the maintenance and installation of the display module.
Description
Technical Field
The invention relates to the technical field of display, in particular to an adapter card, a display device and a module controller.
Background
In the LED (Light Emitting Diode) display screen industry, the physical interface size and the internal wiring of the product increasingly limit the development trend of miniaturization of the LED display screen. At present, various connectors and cables are used in most industries to perform signal switching and transmission. Along with the LED interval is littleer and more, device quantity on the PCB (Printed Circuit Board) of LED display module assembly is more and more, and the space that can be used to the overall arrangement connector just also is littleer and connector and winding displacement also are the source that the high frequency leads to showing bad problem, moreover also has caused great inconvenience to staff's installation and later maintenance, consequently is the pain point problem that the present trade urgently needs to be solved.
Disclosure of Invention
To overcome at least some of the disadvantages and drawbacks of the related art, embodiments of the present invention provide an adapter card, a display device, and a module controller.
In one aspect, an adaptor card provided in an embodiment of the present invention includes: a circuit board; a control card connector disposed on the circuit board; the signal converters are electrically connected with the control card connector, and each signal converter is used for receiving display data and control signals input by the control card connector and converting the display data and the control signals into target format electric signals; and the wireless transmission chips are respectively and electrically connected with the signal converters, wherein each wireless transmission chip is used for converting the target format electric signal into an electromagnetic signal and sending the electromagnetic signal to the display module in a wireless mode, and the working frequency of each wireless transmission chip is positioned in a millimeter wave frequency band.
The wireless transmission chip is arranged in the embodiment, so that the wireless transmission between the adapter card and the display module is conveniently realized, a connector assembly and a flat cable which are used for transmitting display data and control signals on the display module can be omitted, the structural space of the display module is saved, and the maintenance and the installation of the display module are convenient; moreover, the working frequency is positioned in the millimeter wave frequency band, which is beneficial to reducing the possibility of wireless signal crosstalk; in addition, the signal converter arranged between the wireless transmission chip and the control card connector can realize wireless transmission without changing the circuit hardware structure of the control card of the module controller.
In one embodiment of the present invention, each of the signal converters includes a serial-to-parallel conversion chip, the display data and control signals are parallel signals, and the target format electrical signal is a serial signal.
In an embodiment of the present invention, each of the wireless transmission chips is a simplex wireless transmission chip or a full-duplex wireless transceiver chip.
In one embodiment of the present invention, the display data and control signals include red, green and blue display data, a data clock signal, a latch signal, an enable signal, and a row decoding address signal.
In one embodiment of the present invention, the plurality of wireless transmission chips are electrically connected to the plurality of signal converters through SerDes buses or SGMII buses, respectively.
On the other hand, an embodiment of the present invention provides a display device, including: any one of the above mentioned riser cards; the control card is inserted and fixed to the control card connector of the adapter card; and each display module comprises a second wireless transmission chip, a display circuit and a second signal converter electrically connected between the second wireless transmission chip and the display circuit, the second wireless transmission chip is used for receiving the electromagnetic signals wirelessly sent by the corresponding wireless transmission chip in the plurality of wireless transmission chips of the adapter card and converting the electromagnetic signals into corresponding electric signals and sending the electric signals to the second signal converter for signal conversion so as to obtain the display data and control signals to drive the display circuit to display, and the working frequency of the second wireless transmission chip is located in a millimeter wave frequency band.
The wireless transmission chip is arranged in the embodiment, so that the wireless transmission between the adapter card and the display module is conveniently realized, a connector assembly and a flat cable which are used for transmitting display data and control signals on the display module can be omitted, the structural space of the display module is saved, and the maintenance and the installation of the display module are convenient; moreover, the working frequency is positioned in the millimeter wave frequency band, which is beneficial to reducing the possibility of wireless signal crosstalk; in addition, the signal converter arranged between the wireless transmission chip and the control card connector can realize wireless transmission without changing the circuit hardware structure of the control card of the module controller.
In one embodiment of the present invention, the second wireless transmission chip is electrically connected to the second signal converter through a SerDes bus or an SGMII bus.
In an embodiment of the present invention, the control card includes a second circuit board, a display data and control signal output circuit, an ethernet physical layer transceiver set and a second connector, which are disposed on the second circuit board, the ethernet physical layer transceiver set is electrically connected between the display data and control signal output circuit and the second connector, and the control card is plugged into the control card connector of the adapter card through the second connector; the display circuit includes an LED array and an LED driving circuit electrically connected between the second signal converter and the LED array.
In an embodiment of the present invention, the second wireless transmission chip is a simplex wireless reception chip or a full-duplex wireless transceiver chip.
In another aspect, an embodiment of the present invention provides a module controller, including: a circuit board; the module control circuit is arranged on the circuit board; the signal converters are electrically connected with the module control circuit and are used for receiving display data and control signals provided by the module control circuit and converting the display data and the control signals into electric signals in a target format; and the wireless transmission chips are respectively and electrically connected with the signal converters, wherein each wireless transmission chip is used for converting the target format electric signal into an electromagnetic signal and sending the electromagnetic signal to the display module in a wireless mode, and the working frequency of each wireless transmission chip is positioned in a millimeter wave frequency band.
The wireless transmission chip is arranged in the embodiment, so that the wireless transmission between the adapter card and the display module is conveniently realized, a connector assembly and a flat cable which are used for transmitting display data and control signals on the display module can be omitted, the structural space of the display module is saved, and the maintenance and the installation of the display module are convenient; moreover, the working frequency is positioned in the millimeter wave frequency band, which is beneficial to reducing the possibility of wireless signal crosstalk; in addition, the arrangement of the signal converter is beneficial to simplifying the design difficulty of the module controller to realize wireless transmission.
In summary, the above technical solutions of the embodiments of the present invention may have one or more of the following advantages: the wireless transmission chip can save a connector assembly and a flat cable which are used for transmitting display data and control signals on the display module, save the structural space of the display module and the display device, and facilitate the maintenance and the installation of the display module and the display device; moreover, the working frequency is positioned in the millimeter wave frequency band, which is beneficial to reducing the possibility of wireless signal crosstalk; in addition, the arrangement of the signal converter can simplify the design difficulty of the module controller.
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 device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram illustrating a connection relationship between an adapter card and a plurality of display modules in the display device shown in fig. 1.
Fig. 3 is a schematic block diagram of the display module shown in fig. 2.
FIG. 4 is a block diagram of the control card of FIG. 1.
Fig. 5 is a schematic view illustrating another connection relationship between the adapter card and a plurality of display modules in the display device shown in fig. 1.
Fig. 6 is a schematic diagram illustrating another connection relationship between the adapter card and a plurality of display modules in the display device shown in fig. 1.
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.
Referring to fig. 1, a display device 10 according to an embodiment of the present invention is, for example, an LED box and includes: the display device comprises a frame 11, an adapter card 13, a plurality of display modules 15 and a control card 17. Wherein, the frame 11 has a module mounting surface 110 and an accommodating space 112 located at the back side of the module mounting surface 110; each display module 15 is disposed on the module mounting surface 110, and the adapter card 13 and the control card 17 are disposed in the accommodating space 112. In this embodiment, the assembly of the adapter card 13 and the control card 17 is used as a specific implementation of the module controller.
Referring to fig. 2, the adaptor card 13 of the present embodiment includes: a circuit board 131, a control card connector 133, a plurality of signal converters 134, and a plurality of wireless transmission chips 135. The control card connector 133 is used for connecting the control card 17, and is, for example, a high-contact connector using two connectors with the same Pin number, such as two 120 pins, arranged in pairs; of course, other types of connectors may be used, as long as they enable an electrical or even mechanical connection between the control card 17 and the adapter card 13. The signal converters 134 are respectively disposed on the circuit board 131 and electrically connected to the control card connector 133. The wireless transmission chips 135 are respectively disposed on the circuit board 131 and electrically connected to the signal converters 134, and are, for example, simplex wireless transmission chips, and the operating frequency of the simplex wireless transmission chips is located in the millimeter wave band, specifically, the wireless transmission chips whose operating frequency is located in the millimeter wave band provided by the kaisaka corporation or the italian semiconductor corporation may be used. The millimeter wave band herein typically means a frequency range of 30GHz to 300GHz with a corresponding wavelength of 1 mm to 10 mm. The simplex wireless transmitting chip operating in the millimeter wave band of the present embodiment is very suitable for the application of the display device 10 in the LED display screen, because the single display device 10 is typically formed by splicing a plurality of display modules 15, after the wireless transmission chip 135 is installed in the display device 10, how to avoid the wireless signal crosstalk between the plurality of wireless transmission chips 135 in the same display device 10 is the primary consideration, and the simplex wireless transmitting chip of the present embodiment operates in the millimeter wave band, which can greatly reduce the possibility of the wireless signal crosstalk compared with the WiFi module, the bluetooth module, and the UWB communication module in the prior art. Furthermore, based on the performance of the wireless transmission chip and the easy availability of the frequency band, the millimeter wave frequency band in which the simplex wireless transmission chip works is preferably 57GHZ-67GHZ or 71GHZ-87GHZ in this embodiment. In one embodiment, the signal converter 134 includes a serial-to-parallel conversion chip, such as a DS92LV2421 chip, for converting the display data and the control signal inputted via the control card connector 133 from parallel signals into serial signals to be provided to the corresponding wireless transmission chip 135; the serial signal is converted into an electromagnetic signal by the wireless transmission chip 135 and transmitted to the corresponding display module 15 in a wireless manner. The display data and control signals include, for example, red, green and blue (RGB) data sets and data clock signals (DCLK), latch signals (LAT), enable signals (OE) and row decoding address signals, even row blanking control signals, etc., so that the function of the adapter card 13 is to decompose the RGB data sets and control signals provided by the control card 17 according to rules and transmit them to the display modules 15.
The serial Signal is transmitted between the Signal converter 134 and the wireless transmission chip 135 through, for example, a SerDes (Serializer/Deserializer) bus, for example, a serial Differential Signal format such as an LVDS (Low Voltage Differential Signal) format, and such a connection with the wireless transmission chip 135 implemented by using a Differential Signal line pair can effectively improve the rate and stability of data transmission. Or, the Serial signal is transmitted between the signal converter 134 and the wireless transmission chip 135 through a Serial Gigabit Media Independent Interface (SGMII) bus. Furthermore, it should be noted that, in one embodiment, the circuit board 131 of the adapter card 13 may further be provided with an ethernet interface set electrically connected to the control card connector 133, for example, including two or more RJ45 ports integrated with the network cable, or an RJ45 port and network cable separated structure.
In view of the above, the display module 15 is provided with the wireless transmission chip 155 and the signal converter 156, the wireless transmission chip 155 performs wireless data communication with a corresponding wireless transmission chip 135 on the adapter card 13, for example, the wireless transmission chip 155 of the display module 15 receives an electromagnetic signal sent by the corresponding wireless transmission chip 135, converts the electromagnetic signal into an electrical signal, and provides the electrical signal to the signal converter 156 for signal conversion to obtain display data and a control signal. Therefore, in the embodiment, based on the wireless transmission technology, the wireless transmission circuits are designed on the adapter card 13 and the display module 15 based on the wireless transmission chips, and the wireless transmission chips 135 and 155 are respectively arranged on the adapter card 13 and the display module 15, so that the effect of wireless signal transmission can be achieved, and the connector and the flat cable for transmitting the display data and the control signal between the display module 15 and the adapter card 13 are also omitted.
More specifically, for example, as shown in fig. 3, the display module 15 of the present embodiment includes: a circuit board 151, and a display circuit, a wireless transmission chip 155, and a signal converter 156 provided on the circuit board 151. The wireless transmission chip 155 is, for example, a simplex wireless receiving chip, and the operating frequency thereof is located in the millimeter wave frequency band; the wireless transmission chip 155 may specifically adopt a wireless transmission chip whose operating frequency is located in a millimeter wave band, which is provided by kaisaka or semiconductor corporation. The display circuit includes, for example, an LED array 150 and an LED driving circuit 157 electrically connected to the LED array 150. The signal converter 156 is electrically connected between the wireless transmission chip 155 and the LED driving circuit 157 of the display circuit, and includes, for example, a serial-to-parallel conversion chip such as a DS92LV2422 chip, and is configured to convert the serial signal transmitted by the wireless transmission chip 155 into a parallel signal representing display data and a control signal, and provide the parallel signal to the LED driving circuit 157 of the display circuit to drive the display circuit to display. Serial signals representing display data and control signals are transmitted between the signal converter 156 and the wireless transmission chip 155, for example, through a SerDes bus or an SGMII bus. The LED array 150 is, for example, a Passive Matrix (Passive Matrix) LED array, such as a LED lamp including a plurality of row lines, a plurality of column lines, and a plurality of LED lamps electrically connecting the plurality of row lines and the plurality of column lines; the LED driving circuit 157 includes, for example, a row decoding circuit and a column driving circuit, wherein the row decoding circuit is electrically connected to the plurality of row lines, which include, for example, 3-8 decoder chips; the column driving circuit is electrically connected to the plurality of column lines, and includes, for example, a constant current source driving chip. It should be noted here that the LED array 150 of the present embodiment is not limited to the passive matrix type, and may be an active matrix type; even the display module 15 of the present embodiment is not limited to the LED display module shown in fig. 3.
Referring to fig. 4, the control card 17 of the present embodiment includes, for example: a circuit board 171, and a display data and control signal output circuit 173, an ethernet physical layer transceiver group 175, and a connector 177 disposed on the circuit board 171. The display data and control signal output circuit 173 employs, for example, a programmable logic device such as an FPGA device, which is electrically connected to the connector 177, so that display data and control signals can be output through the connector 177. An ethernet phy transceiver 175, for example comprising two or even more ethernet phy transceiver chips such as 1GBase-T, 2.5GBase-T, 5GBase-T or 10GBase-T type ethernet phy transceiver chips, or comprising one multi-port ethernet phy transceiver chip, or a combination of both, is electrically connected between the display data and control signal output circuit 173 and the connector 177. The connector 177 is adapted to be plugged into a control card connector 133 on the adapter card 13, which is, for example, two identical Pin count connectors arranged in pairs, such as two 120Pin high-contact connectors. It should be noted that, in other embodiments, the ethernet physical layer transceiver group 175 may not be connected to the connector 177, and accordingly, the ethernet interface group may not be disposed on the transition card 13, but may be disposed directly on the circuit board 171 of the control card 17. Alternatively, the ethernet interface group provided on the circuit board 171 of the control card 17 may be changed to another interface type, for example, a micro USB3.0 interface or a Mini HDMI interface.
In addition, in other embodiments, as shown in fig. 5, all circuit components on the circuit board 171 of the control card 17 can be directly integrated on the circuit board 131 of the adapter card 13 to serve as a module control circuit 601, so that the module controller 600 of the embodiment of the present invention adopts a single circuit board structure, and is not limited to the multi-circuit board structure combined by the adapter card 13 and the control card 17 as shown in fig. 1. It should be noted that, in the multi-circuit board structure composed of the adapter card 13 and the control card 17 shown in fig. 1, the combination of the control card connector 133 and the control card is used as another embodiment of the module control circuit 601 shown in fig. 5.
In addition, referring to fig. 6, in other embodiments, each wireless transmission chip 135 on the adapter card 13 is not limited to the simplex wireless transmission chip described in the foregoing embodiments, but adopts a full-duplex wireless transceiver chip whose operating frequency is located in the millimeter wave frequency band; correspondingly, the wireless transmission chip 155 on each display module 15 may also be a full-duplex wireless transceiver chip, so that the display module 15 may also upload data to the adaptor card 13 in a wireless transmission manner. Of course, it can be understood that, in the case that each wireless transmission chip 135 on the adapter card 13 is a full-duplex wireless transceiver chip, the wireless transmission chip 155 on each display module 15 can still adopt a simplex wireless receiver chip, so as to reduce the hardware cost of the display module 15.
In summary, the solution for wireless transmission between the adapter card and the display module according to the embodiment of the present invention can omit the connector and the cable on the display module for transmitting the display data and the control signal, thereby saving the structural space of the display module and the display device; moreover, it has still made things convenient for display module assembly and display device's maintenance and installation.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An adapter card, comprising:
a circuit board;
a control card connector disposed on the circuit board;
the signal converters are electrically connected with the control card connector, and each signal converter is used for receiving display data and control signals input by the control card connector and converting the display data and the control signals into target format electric signals; and
and the wireless transmission chips are respectively and electrically connected with the signal converters, each wireless transmission chip is used for converting the target format electric signals into electromagnetic signals and sending the electromagnetic signals to the display module in a wireless mode, and the working frequency of each wireless transmission chip is positioned in a millimeter wave frequency band.
2. The riser card of claim 1, wherein each of the signal converters comprises a serial-to-parallel conversion chip, the display data and control signals are parallel signals, and the target format electrical signal is a serial signal.
3. The adapter card of claim 1 or 2, wherein each wireless transmission chip is a simplex wireless transmission chip or a full-duplex wireless transceiver chip.
4. The riser card of claim 1, wherein the display data and control signals comprise red, green and blue data sets, a data clock signal, a latch signal, an enable signal, and a row decode address signal.
5. The riser card of claim 1, wherein the plurality of wireless transmission chips electrically connect the plurality of signal converters through a SerDes bus or an SGMII bus, respectively.
6. A display device, comprising:
the riser card of any one of claims 1 to 5;
the control card is inserted and fixed to the control card connector of the adapter card; and
the display module comprises at least one display module, wherein each display module comprises a second wireless transmission chip, a display circuit and a second signal converter electrically connected between the second wireless transmission chip and the display circuit, the second wireless transmission chip is used for receiving the electromagnetic signals wirelessly sent by the corresponding wireless transmission chip in the plurality of wireless transmission chips of the adapter card and converting the electromagnetic signals into corresponding electric signals to be sent to the second signal converter for signal conversion so as to obtain the display data and control signals to drive the display circuit to display, and the working frequency of the second wireless transmission chip is located in a millimeter wave frequency band.
7. The display device according to claim 6, wherein the second wireless transmission chip is electrically connected to the second signal converter through a SerDes bus or an SGMII bus.
8. The display device according to claim 6, wherein the control card comprises a second circuit board, and a display data and control signal output circuit, an ethernet physical layer transceiver set and a second connector which are disposed on the second circuit board, the ethernet physical layer transceiver set is electrically connected between the display data and control signal output circuit and the second connector, and the control card is plugged into the control card connector of the adapter card through the second connector; the display circuit includes an LED array and an LED driving circuit electrically connected between the second signal converter and the LED array.
9. The display device as claimed in claim 6, wherein the second wireless transmitting chip is a simplex wireless receiving chip or a full-duplex wireless transceiving chip.
10. A module controller, comprising:
a circuit board;
the module control circuit is arranged on the circuit board;
the signal converters are electrically connected with the module control circuit and are used for receiving display data and control signals provided by the module control circuit and converting the display data and the control signals into electric signals in a target format; and
and the wireless transmission chips are respectively and electrically connected with the signal converters, each wireless transmission chip is used for converting the target format electric signals into electromagnetic signals and sending the electromagnetic signals to the display module in a wireless mode, and the working frequency of each wireless transmission chip is positioned in a millimeter wave frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969833.1A CN112653850A (en) | 2019-10-12 | 2019-10-12 | Adapter card, display device and module controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969833.1A CN112653850A (en) | 2019-10-12 | 2019-10-12 | Adapter card, display device and module controller |
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| CN112653850A true CN112653850A (en) | 2021-04-13 |
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| CN201910969833.1A Pending CN112653850A (en) | 2019-10-12 | 2019-10-12 | Adapter card, display device and module controller |
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| CN209118266U (en) * | 2018-10-17 | 2019-07-16 | 西安诺瓦电子科技有限公司 | Connector, connector assembly, scanning card, display screen system and display control card |
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2019
- 2019-10-12 CN CN201910969833.1A patent/CN112653850A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130120476A1 (en) * | 2011-11-11 | 2013-05-16 | Qualcomm Mems Technologies, Inc. | Systems, devices, and methods for driving a plurality of display sections |
| CN105516629A (en) * | 2016-01-27 | 2016-04-20 | 利亚德光电股份有限公司 | Display screen and splicing screen |
| CN105741810A (en) * | 2016-05-06 | 2016-07-06 | 深圳市维世科技有限公司 | LED display screen control system and control method |
| CN208351844U (en) * | 2018-05-18 | 2019-01-08 | 徐志卿 | A kind of novel LED display that content is shown by wireless blue tooth synchronous transfer |
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Application publication date: 20210413 |