CN112398499B - Wireless transceiver, display box and circuit assembly - Google Patents
Wireless transceiver, display box and circuit assembly Download PDFInfo
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- CN112398499B CN112398499B CN201910701393.1A CN201910701393A CN112398499B CN 112398499 B CN112398499 B CN 112398499B CN 201910701393 A CN201910701393 A CN 201910701393A CN 112398499 B CN112398499 B CN 112398499B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
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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
- G09G2370/00—Aspects of data communication
- G09G2370/16—Use of wireless transmission of display information
Abstract
The embodiment of the invention relates to a wireless transceiver, comprising: a cable including a power signal line group and a differential signal line group; the wired interface end is arranged at the first end of the cable and electrically connected with the power signal line group and the differential signal line group; and a wireless transceiving end provided at a second end of the cable opposite to the first end and including: the wireless transmitting chip and the wireless receiving chip are respectively electrically connected with the differential signal line group through a differential signal line pair and are also respectively electrically connected with the voltage conversion circuit, and the working frequency of the wireless transmitting chip and the wireless receiving chip is positioned in a millimeter wave frequency band. The embodiment of the invention also provides a display box body adopting the wireless transceiver and a circuit component suitable for the wireless transceiver.
Description
Technical Field
The invention relates to the technical field of data transmission and display, in particular to a wireless transceiver, a display box body and a circuit assembly.
Background
In the LED display screen control system industry, the display box bodies basically transmit signals in wired modes such as network cables and the like. With the continuous development of the LED display screen technology, the pixel pitch of the LED display screen is smaller and smaller, and the area of the screen body is larger and larger, which means that the number of display boxes used by the LED display screen is larger and larger, and then the number of connected wires is also greatly increased. The net gape crystal head is fragile, needs a large amount of net twines to connect and also can cause very big puzzlement to subsequent debugging and the maintenance of staff moreover, and these are the pain point problem of LED display screen control system trade all the time, await the solution urgently.
Disclosure of Invention
To overcome the disadvantages and drawbacks of the related art, embodiments of the present invention provide a wireless transceiver, a display housing, and a circuit assembly.
In one aspect, an embodiment of the present invention provides a wireless transceiver, including: a cable including a power signal line group and a differential signal line group, wherein the differential signal line group includes a plurality of pairs of differential signal lines; the wired interface end is arranged at the first end of the cable and electrically connected with the power signal line group and the differential signal line group; and a wireless transceiving end provided at a second end of the cable opposite to the first end and including: the wireless transmitting chip and the wireless receiving chip are electrically connected with the differential signal line group through differential signal line pairs respectively and are also electrically connected with the voltage conversion circuit respectively, and the working frequency of the wireless transmitting chip and the working frequency of the wireless receiving chip are located in a millimeter wave frequency band.
The wireless transceiver of the embodiment respectively sends data transmission and data reception to the wireless transmitting chip and the wireless receiving chip, and the chips work in a millimeter wave frequency band to transmit or receive data, so that the stability and reliability of data wireless transmission can be effectively ensured. Furthermore, the cable, the wired interface end and the wireless transceiving end are integrated into an integrated structure, the power signal is obtained through the cable and is supplied to the wireless transceiving end, the module controller of the display box body is conveniently connected in the application occasion of the LED display screen, and high-speed signal transmission between the module controller and the module controller is realized.
In one embodiment of the invention, the circuit board is provided with a pad group, and the pad group comprises a power signal pad group and two pairs of differential signal pad groups; the power signal pad group is electrically connected with the power signal line group, and the voltage conversion circuit is electrically connected with the power signal pad group to form electrical connection with the power signal line group; the two pairs of differential signal bonding pad groups are electrically connected with the differential signal line groups, and the wireless transmitting chip and the wireless receiving chip are electrically connected with the two pairs of differential signal bonding pad groups through differential signal line pairs respectively so as to form electrical connection with the differential signal line groups.
In one embodiment of the present invention, the power supply signal pad group includes a power supply voltage pad and a power supply ground pad, the two pairs of differential signal pads include a first pair of differential signal pads and a second pair of differential signal pads, the pad group further includes a shielding ground pad and the shielding ground pad is located between the first pair of differential signal pads and the second pair of differential signal pads, and the power supply ground pad and the power supply voltage pad are respectively located on a side of the first pair of differential signal pads away from the power supply voltage pad and a side of the second pair of differential signal pads away from the power supply voltage pad.
In one embodiment of the present invention, the operating frequencies of the wireless transmitting chip and the wireless receiving chip are in the frequency range of 57GHZ to 67GHZ or 71GHZ to 87 GHZ.
In one embodiment of the present invention, the voltage conversion circuit and the pad group are located on a first side of the circuit board, and the wireless transmitting chip and the wireless receiving chip are located on a second side of the circuit board opposite to the first side.
In an embodiment of the present invention, the wired interface end is a USB3.0 interface.
On the other hand, the display box body provided by the embodiment of the invention comprises an LED display module; the module controller is electrically connected with the LED display module and is used for driving and controlling the LED display module to display images, wherein the module controller is provided with a USB interface; and any one of the wireless transceivers is plugged into the USB interface of the module controller through the wired interface end.
The demonstration box of this embodiment has installed wireless transceiver, utilizes wireless transceiver can show the image data signal transmission between the box, and it can realize showing the wireless connection between the box, does not use the cable for example the net twine can connect between the box and communicate to send or receive data with extremely fast speed, provide higher LED display screen and connect the convenience, and show the time cost and the cost of labor that have reduced installation, dismantlement, maintenance display box.
In one embodiment of the invention, the module controller further comprises a programmable logic device and a power circuit; the programmable logic device is electrically connected with the USB interface through a plurality of pairs of SerDes differential signal lines for sending image data signals to the USB interface to be wirelessly output through the wireless transceiver or receiving image data signals wirelessly input to the wireless transceiver from the USB interface; and the power supply circuit is electrically connected with the USB interface and is used for transmitting a power supply signal to the USB interface.
In one embodiment of the invention, the module controller further comprises an ethernet interface and an ethernet physical layer transceiver chip electrically connected between the ethernet interface and the programmable logic device, and the ethernet physical layer transceiver chip is a 5GBASE-T or 10GBASE-T type ethernet physical layer transceiver chip.
In another aspect, a circuit assembly according to an embodiment of the present invention includes: the circuit board is provided with a power supply voltage pad, a first pair of differential signal pads and a second pair of differential signal pads, wherein the power supply voltage pad is positioned between the first pair of differential signal pads and the second pair of differential signal pads; the voltage conversion circuit is arranged on the circuit board and is electrically connected with the power supply voltage pad; and the wireless transceiving chip set is arranged on the circuit board and electrically connected with the voltage conversion circuit, wherein the wireless transceiving chip set is also electrically connected with the first pair of differential signal bonding pads and the second pair of differential signal bonding pads through a differential signal wire pair, and the working frequency of the wireless transceiving chip set is positioned in a frequency range of 57GHZ-67GHZ or 71GHZ-87 GHZ.
The embodiment facilitates the interface standardization of the wireless transceiver by defining the signals of each pad on the circuit board.
In summary, the above technical solutions of the embodiments of the present invention may have one or more of the following advantages: the wireless transceiver of the embodiment of the invention respectively sends the data transmission and the data reception to the wireless transmitting chip and the wireless receiving chip, thereby effectively ensuring the stability and the reliability of the wireless transmission of the data. Furthermore, the cable, the wired interface end and the wireless transceiving end are integrated into an integrated structure, the power signal is obtained through the cable and is supplied to the wireless transceiving end, and the module controller of the display box body is conveniently connected in the application occasion of the LED display screen, so that high-speed signal transmission between the module controller and the module controller is realized. In addition, the signal definition of each pad in the pad group electrically connected with the cable on the circuit board is beneficial to the interface standardization of the wireless transceiver. In addition, the display box body is provided with the wireless transceiver, image data signals between the display box bodies can be transmitted by using the wireless transceiver, wireless connection between the display box bodies can be realized, the display box bodies can be connected for communication without cables such as network cables, and data can be sent or received at a very high speed, so that higher connection convenience of the LED display screen is provided, and the time cost and the labor cost for installing, disassembling and maintaining the display box bodies are obviously reduced.
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 perspective view of a wireless transceiver according to an embodiment of the present invention.
Fig. 2 is a diagram illustrating specific interface pin definitions of the wired interface terminal shown in fig. 1.
Fig. 3 and 4 are schematic diagrams of the layout of the front and back components of the circuit board in the transceiver end of fig. 1.
Fig. 5 is a signal definition diagram of the pad set shown in fig. 3.
Fig. 6 is a schematic structural diagram of a display box according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a specific application of the display box shown in fig. 6.
Fig. 8 is a schematic structural diagram of another module controller for displaying a box according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a wireless transceiver 10, including: cable 11, wired interface end 13, and wireless transceiver end 15. The cable 11 includes a power signal line group and a differential signal line group for transmitting data signals and power signals, and has a first end 111 and a second end 113 opposite to the first end 111. The power signal line group typically includes a power voltage signal line and a power ground signal line; the differential signal line group typically includes a plurality of pairs of differential signal lines, such as two pairs of differential signal lines. The wired interface terminal 13 is disposed at the first end 111 of the cable 11 and electrically connects the power signal line group and the differential signal line group. The wireless transceiving terminal 15 is provided at the second end 113 of the cable 11.
In one embodiment, the wired interface end 13 is a USB interface, such as a micro USB3.0 interface or other types of USB3.0 interfaces. Taking fig. 2 as an example, the wired interface terminal 13 includes an ID pin, a DP pin, a Dn pin, a pair of differential signal receiving pins MicB _ SSRXp and MicB _ SSRXn, a ground shielding pin GND _ DRAIN, a ground power pin GND, a power voltage pin VBUS, a pair of differential signal transmitting pins MicB _ SSTXp and MicB _ SSTXn, and three shielding layer ground pins Shield 1-Shield 3. Accordingly, the power signal line group in the cable 11 connects the power voltage pin VBUS and the power ground pin GND for transmitting the power voltage VCC and the power ground GND; differential signal line groups in cable 11 connect pins MicB _ SSRXp and MicB _ SSRXn and pins MicB _ SSTXp and MicB _ SSTXn for transmitting differential signals RX _ P and RX _ N and differential signals TX _ P and TX _ N. Further, as can be seen from fig. 2, the ID pin, the DP pin, and the Dn pin are set as the idle pins, or as other function extension pins, for example, as configuration signal pins such as a UART serial port, an IIC interface, and the like.
Referring to fig. 3 and 4, the radio transceiver terminal 15 includes: a circuit board 151, a voltage conversion circuit 152, a wireless transmission chip Tx, and a wireless reception chip Rx. The voltage conversion circuit 152, the wireless transmission chip Tx, and the wireless reception chip Rx are disposed on the circuit board 151. The voltage conversion circuit 152 is electrically connected to the power signal line group to obtain a power voltage VCC and a power ground GND through the cable 11, and the wireless transmitting chip Tx and the wireless receiving chip Rx are electrically connected to the differential signal line group through differential signal line pairs to receive differential signals Tx _ P and Tx _ N and upload differential signals Rx _ P and Rx _ N through the cable 11, respectively. Furthermore, the wireless transmitting chip Tx and the wireless receiving chip Rx are electrically connected to the voltage converting circuit 152 respectively to obtain the required operating voltage. In addition, the operating frequencies of the wireless transmitting chip Tx and the wireless receiving chip Rx are located in the millimeter wave frequency band, which together is a specific implementation of the wireless transceiving chip set.
Specifically, the wireless transmitting chip Tx is used, for example, to operate in a millimeter wave band to convert data input via the cable 11 into an electromagnetic signal form for wireless output, and the wireless receiving chip Rx is used, for example, to operate in a millimeter wave band to wirelessly (such as an electromagnetic signal form) access data and convert the data into an electrical signal form for transmission to the cable 11 for wired output. 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 wireless transmitting chip Tx and the wireless receiving chip Rx working in the millimeter wave band in this embodiment are very suitable for the application of the display box in the LED display screen, because the LED display screen is typically formed by splicing a plurality of display boxes, when the wireless transceiver 10 is installed in each display box, the first consideration is how to avoid the wireless signal crosstalk between two wireless transceivers 10 that do not need to transmit and receive data in the same LED display screen, and the wireless transmitting chip Tx and the wireless receiving chip Rx in this embodiment work in the millimeter wave band, which can greatly reduce the possibility of the wireless signal crosstalk compared with the wireless transceiver modules such as the WiFi module and the bluetooth module in the prior art. Furthermore, based on the performance of the wireless chip and the easy availability of the frequency band, in this embodiment, it is preferable that the millimeter wave frequency band in which the wireless transmitting chip Tx operates is 57GHZ-67GHZ or 71GHZ-87GHZ, for example, the wireless transmitting chip Tx operates at 60GHZ or 80 GHZ; similarly, the millimeter wave frequency band of the wireless receiving chip Rx is 57GHZ-67GHZ, or 71GHZ-87GHZ, for example, the wireless receiving chip Rx operates at 60GHZ or 80 GHZ. In addition, it is worth mentioning that the present embodiment performs the data wireless transmission and the data wireless reception by two independent chips, which can effectively ensure the stability and reliability of data reception and transmission.
Referring to fig. 3, 4 and 5, the circuit board 151 has a first side 151a and a second side 151b opposite to each other, the first side 151a of the circuit board 151 is provided with a pad group 1510, and the pad group 1510 includes seven pads P1-P7, for example. As shown in fig. 5 and 3, pads P2 and P3 are a pair of differential signal pads electrically connected to pins MicB _ SSRXp and MicB _ SSRXn (or pins MicB _ SSTXp and MicB _ SSTXn) of the wired interface terminal 13, for example, by a differential signal line group of the cable 11; pads P5 and P6 are another pair of differential signal pads that electrically connect pins MicB _ SSTXp and MicB _ SSTXn (or pins MicB _ SSRXp and MicB _ SSRXn) of the wire interface terminal 13, e.g., by a differential signal line group of the cable 11; pad P1 is a supply voltage pad that is electrically connected to pin VBUS of wired interface terminal 13, for example, by a supply signal line group of cable 11; the pad P7 is a power ground pad electrically connected to the pin GND of the wire interface terminal 13, for example, by a power signal line group of the cable 11; and pad P4 is a shielded ground pad to which pin GND _ DRAIN of the line interface terminal 13 is electrically connected, for example, by a shielded ground signal line in the cable 11. Further, it should be noted that the number of pads in the pad group 1510 is not limited to seven as shown in fig. 5, and it may be another number, such as eight, for example, a power ground pad is added between P1 and P2. Even in other embodiments, the pad set 1510 can be replaced with a cable interface such as a USB3.0 interface (like a micro USB3.0 interface, etc.).
In view of the above, in fig. 3, the voltage conversion circuit 152 is located on the first side 151a of the circuit board 151. The voltage conversion circuit 152 employs, for example, a power management chip (PMIC), and electrically connects the pads P4 and P1 in the pad group 1510 to obtain an input dc voltage such as 5V and a power ground GND. Further, in fig. 4, the wireless transmitting chip Tx and the wireless receiving chip Rx are located on the second side 151b of the circuit board 151 and are electrically connected to the pads P5 and P6 and the pads P2 and P3 respectively, for example, through a pair of differential signal lines; the differential signal line pair is used for realizing the connection with the wireless transmitting chip Tx and the wireless receiving chip Rx, so that the speed and the stability of data transmission can be effectively improved. The wireless transmitting chips Tx and the wireless receiving chips Rx are arranged at intervals in the length direction of the circuit board 151 (in the longitudinal direction of fig. 4), so that crosstalk between the wireless transmitting chips Tx and the wireless receiving chips Rx is reduced as much as possible, and good wireless communication is ensured. In addition, the second side 151b of the circuit board 151 is provided with annular wave-absorbing material elements 153 and 154 for further reducing signal crosstalk between the wireless transmitting chip Tx and the wireless receiving chip Rx and enhancing wireless communication capability of the chips. The annular wave-absorbing material element 153 is disposed on the circuit board 151 around the wireless receiving chip Rx, and preferably, in order to prevent the antenna signal affecting the internal antenna of the wireless receiving chip Rx, the wireless receiving chip Rx is disposed eccentrically in the central hole of the annular wave-absorbing material element 153, that is, the wireless receiving chip Rx is not disposed centrally; the annular wave-absorbing material element 153 of the embodiment is made of Lidar JCS-9 type wave-absorbing material, for example. Similarly, the annular wave-absorbing material element 154 is disposed around the wireless transmitting chip Tx on the circuit board 151, and preferably, to prevent the antenna signal affecting the internal antenna of the wireless transmitting chip Tx, the wireless transmitting chip Tx is disposed eccentrically in the central hole of the annular wave-absorbing material element 154, i.e., the wireless transmitting chip Tx is not disposed centrally; the annular wave-absorbing material element 154 of this embodiment is made of, for example, Lidar JCS-9 type wave-absorbing material. By way of non-limiting example, the wireless transmitting chip Tx and the wireless receiving chip Rx of the present embodiment may be KQG104-B3 series chips commercially available, but may also be other wireless transmitting and receiving chips suitable for operating in the millimeter wave band.
In summary, the wireless transceiver 10 according to the embodiment of the present invention sends data transmission and receives data to the wireless transmitting chip and the wireless receiving chip respectively, so as to effectively ensure the stability and reliability of data wireless transmission. Furthermore, the cable 11, the wired interface end 13 and the wireless transceiving end 15 are integrated into an integrated structure, the power signal is obtained through the cable 11 and is supplied to the wireless transceiving end 15, a module controller of the display box body is conveniently connected in the application occasion of the LED display screen, and high-speed signal transmission between the module controller and the module controller is realized. In addition, by arranging the pad group 1510, the wireless transmitting chip Tx and the wireless receiving chip Rx on different sides of the circuit board 151 and arranging the wireless transmitting chip Tx and the wireless receiving chip Rx at intervals in the length direction of the circuit board 151, the precise layout of the circuit elements on the circuit board enables the size of the whole wireless transceiver to be small, and the wireless transceiver is convenient to be embedded in the side position of the display box body of the LED display screen.
Referring to fig. 6, an embodiment of the present invention provides a display box 100, including: an LED display module 101, a module controller 103, and two wireless transceivers 105; the wireless transceiver 105 may be the wireless transceiver 10 of the previous embodiment, and the detailed structure thereof is not described herein.
The LED display module 101 includes, for example, a plurality of LED lamp panels, and a plurality of LED display pixels, such as RGB full-color LED pixels, are provided on a single LED lamp panel.
The module controller 103 is used for driving and controlling the LED display module 101 to display an image, and is provided with, for example, a programmable logic device 1032, a power supply circuit 1034 and two USB interfaces 1036. Specifically, the two USB interfaces 1036 are, for example, micro USB3.0 interfaces or other types of USB3.0 interfaces, which are respectively connected to the two wireless transceivers 105 in a plug-in manner; the programmable logic device 1032 is configured with, for example, two SerDes interfaces, and these two USB interfaces 1036 are connected by SerDes channels, respectively, so that it is possible to transmit an image data signal to the USB interface 1036 to be wirelessly output via the corresponding wireless transceiver 105, or to receive an image data signal wirelessly input to the corresponding wireless transceiver from the USB interface 1036; the use of SerDes channels may enable data communication at 5Gbps or even higher transmission bandwidths. The power supply circuit 1034 is electrically connected to the USB interface 1036 for transferring a power supply signal to the USB interface 1036.
As shown in fig. 7, a plurality of display boxes 100 (only two are shown in fig. 7 as an example) may be spliced to form LED display screens with various resolutions, and two adjacent display boxes 100 may transmit and receive data signals, such as image data signals including RGB data, through the wireless transceiver 105.
It is noted that the number of USB interfaces 1036 on the module controllers 103 in a single display cabinet 100 and/or the number of wireless transceivers 105 configured with the display cabinet 100 may be flexibly adjusted according to the actual application requirements. For example, when the LED display screen has only two display boxes, each display box can be provided with only one wireless transceiver; or when the LED display screen has more than two display boxes, the last level display box of the cascaded display boxes can be only provided with one wireless transceiver; and the like, are not listed here.
In addition, referring to fig. 8, in order to be compatible with the scene in which the display box bodies in the prior art are connected by the wire, the display box body of the embodiment may further be provided with: ethernet interface 1038 and an ethernet physical layer transceiver chip 1039 electrically connected between ethernet interface 1038 and programmable logic device 1032. The Ethernet physical layer transceiver chip is, for example, a 5GBASE-T or 10GBASE-T type Ethernet physical layer transceiver chip, so that data communication with 5Gbps or even higher transmission bandwidth can be realized. Furthermore, the ethernet interface 1038 is, for example, an RJ45 interface or an RJ45 interface integrated with an ethernet transformer; the number of ethernet interfaces 1038 is typically two, and correspondingly, there are two ethernet physical layer transceiver chips 1039.
In summary, the display box according to the embodiment of the invention can transmit image data signals between the display boxes by using the wireless transceiver, can realize wireless connection between the display boxes, can be connected for communication without using cables such as network cables between the display boxes, and can transmit or receive data at a very high rate, thereby providing higher convenience for connection of the LED display screen, and significantly reducing time cost and labor cost for installing, disassembling and maintaining the display boxes. The display box body of the embodiment is suitable for the fields of LED televisions, leasing, high-end fixing and the like.
In addition, it should be understood that the foregoing embodiments are merely exemplary of the present invention, and the technical solutions of the embodiments may be arbitrarily combined and used without conflict and contradiction in technical features and without departing from the purpose of the present invention. Furthermore, based on the descriptions of the technical solutions of the foregoing embodiments, it can be understood by those skilled in the art that the number of signal lines in the cable 11 and/or the number of pads in the pad group 1510 on the circuit board 151 in the foregoing embodiments can be appropriately adjusted according to actual needs; and/or the type of interface at the wired interface end 13 may be extended as appropriate, for example, by using other interfaces that include two or more pairs of differential signal pins.
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 wireless transceiver, comprising:
a cable including a power signal line group and a differential signal line group, wherein the differential signal line group includes a plurality of pairs of differential signal lines;
the wired interface end is arranged at the first end of the cable and electrically connected with the power signal line group and the differential signal line group; and
a wireless transceiving end disposed at a second end of the cable opposite to the first end and including: the wireless transmitting chip and the wireless receiving chip are electrically connected with the differential signal line group through differential signal line pairs respectively and are also electrically connected with the voltage conversion circuit respectively, and the working frequency of the wireless transmitting chip and the working frequency of the wireless receiving chip are located in a millimeter wave frequency band.
2. The wireless transceiver of claim 1, wherein the circuit board is provided with a padset, and the padset includes a power signal padset and two pairs of differential signal padsets; the power signal pad group is electrically connected with the power signal line group, and the voltage conversion circuit is electrically connected with the power signal pad group to form electrical connection with the power signal line group; the two pairs of differential signal bonding pad groups are electrically connected with the differential signal line groups, and the wireless transmitting chip and the wireless receiving chip are electrically connected with the two pairs of differential signal bonding pad groups through differential signal line pairs respectively so as to form electrical connection with the differential signal line groups.
3. The wireless transceiver of claim 2, wherein the power signal pad set includes a power voltage pad and a power ground pad, the two pairs of differential signal pads include a first pair of differential signal pads and a second pair of differential signal pads, the pad set further includes a shield ground pad and the shield ground pad is located between the first pair of differential signal pads and the second pair of differential signal pads, the power ground pad and the power voltage pad are located on a side of the first pair of differential signal pads away from the power voltage pad and a side of the second pair of differential signal pads away from the power voltage pad, respectively.
4. The wireless transceiver of claim 1, wherein the operating frequencies of the wireless transmitting chip and the wireless receiving chip are in a frequency range of 57GHZ-67GHZ or 71GHZ-87 GHZ.
5. The wireless transceiver of claim 2, wherein the voltage conversion circuit and the pad set are located on a first side of the circuit board, and the wireless transmitting chip and the wireless receiving chip are located on a second side of the circuit board opposite to the first side.
6. The wireless transceiver of claim 1, wherein the wired interface port is a USB3.0 interface.
7. A display cabinet, comprising:
an LED display module;
the module controller is electrically connected with the LED display module and is used for driving and controlling the LED display module to display images, wherein the module controller is provided with a USB interface; and
the wireless transceiver of any one of claims 1 to 6, plugged to the USB interface of the module controller through the wired interface port.
8. The display cabinet of claim 7, wherein the module controller further comprises a programmable logic device and a power circuit; the programmable logic device is electrically connected with the USB interface through a plurality of pairs of SerDes differential signal lines for sending image data signals to the USB interface to be wirelessly output through the wireless transceiver or receiving image data signals wirelessly input to the wireless transceiver from the USB interface; and the power supply circuit is electrically connected with the USB interface and is used for transmitting a power supply signal to the USB interface.
9. The display cabinet of claim 8, wherein the module controller further comprises an ethernet interface and an ethernet physical layer transceiver chip electrically connected between the ethernet interface and the programmable logic device, and the ethernet physical layer transceiver chip is a 5GBASE-T or a 10GBASE-T type ethernet physical layer transceiver chip.
10. A circuit assembly, comprising:
the circuit board is provided with a power supply voltage pad, a first pair of differential signal pads and a second pair of differential signal pads, wherein the power supply voltage pad is positioned between the first pair of differential signal pads and the second pair of differential signal pads;
the voltage conversion circuit is arranged on the circuit board and is electrically connected with the power supply voltage pad; and
the wireless transceiving chip set is arranged on the circuit board and electrically connected with the voltage conversion circuit, the wireless transceiving chip set is also electrically connected with the first pair of differential signal bonding pads and the second pair of differential signal bonding pads through a differential signal wire pair, and the working frequency of the wireless transceiving chip set is positioned in a frequency range of 57GHZ-67GHZ or 71GHZ-87 GHZ;
wherein, the circuit board still includes: the power supply ground pad and the shielding ground pad are positioned between the first pair of differential signal pads and the second pair of differential signal pads, and the power supply ground pad and the power supply voltage pad are respectively positioned on one side of the first pair of differential signal pads far away from the power supply voltage pad and on one side of the second pair of differential signal pads far away from the power supply voltage pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN105577391A (en) * | 2015-12-16 | 2016-05-11 | 青岛海信宽带多媒体技术有限公司 | Power supply device based on differential communication interface and method and system thereof |
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| JP5375738B2 (en) * | 2010-05-18 | 2013-12-25 | ソニー株式会社 | Signal transmission system |
| TWI552430B (en) * | 2013-09-26 | 2016-10-01 | 財團法人工業技術研究院 | Connector, antenna and electronic device |
| CN106771710A (en) * | 2016-11-15 | 2017-05-31 | 中国电子科技集团公司第四十研究所 | A kind of modular vector network analyzer and its implementation |
| CN109358828B (en) * | 2018-09-09 | 2021-10-08 | 西安触点电子科技有限公司 | Display unit, splicing display device and splicing display system |
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| CN105577391A (en) * | 2015-12-16 | 2016-05-11 | 青岛海信宽带多媒体技术有限公司 | Power supply device based on differential communication interface and method and system thereof |
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