LED all-in-one machine

Abstract

The utility model discloses an LED all-in-one machine. The LED all-in-one machine comprises a screen area which is composed of a plurality of box bodies; the first audio unit is arranged at the bottom of the screen area; the second audio unit is arranged on the left side and / or the right side of the screen area; wherein the audio range of the second audio unit is larger than that of the first audio unit. Through the mode, the problem that the audio effect is poor due to the fact that a single sound production unit of the LED all-in-one machine is blocked is solved.

Description

Technical Field

[0001] The present application relates to the technical field of LED all-in-one machines, and in particular to LED all-in-one machines. Background Art

[0002] With the rapid development of the times, technology in the display field is experiencing breakthroughs and innovations every year. LED all-in-one machines are the core products of large conference scene solutions. In the conference scene of LED all-in-one machines, meetings are the most frequently used situation. Therefore, the ability of LED all-in-one machines to display and make sounds is the most basic functional requirement. In related technologies, LED all-in-one machines generally adopt the design concept of a light built-in speaker + reserved audio interface. Since LED all-in-one machines need to retain the characteristics of assembly of any size, single cabinets are designed to be standardized, and the speakers will naturally be placed in the lower frame of the LED all-in-one machine or external speakers. This poses several problems:

[0003] 1. The sound source of the LED all-in-one machine is at the bottom of the screen, which may cause problems such as a single sound unit being blocked.

[0004] 2. The LED all-in-one machine can be connected to various speakers through external cables, but it is still inconvenient to install equipment such as sound reinforcement systems. Utility Model Content

[0005] The LED all-in-one machine provided in the present application can solve the problem of poor audio effect caused by blocking a single sound unit of the LED all-in-one machine.

[0006] In order to solve the above-mentioned technical problems, the present application provides an LED all-in-one machine on the one hand, which includes: a screen area, which is composed of a plurality of boxes; a first audio unit, which is arranged at the bottom of the screen area; a second audio unit, which is arranged on the left and / or right side of the screen area; wherein the audio range of the second audio unit is greater than the audio range of the first audio unit.

[0007] The second audio units arranged on the left and right sides of the screen area are mirror-symmetrical.

[0008] A slide rail is arranged on the left side and / or the right side of the screen area, the second audio unit is arranged on the slide rail, and the second audio unit moves along the slide rail to adjust the position.

[0009] The LED all-in-one machine further includes a sending card, which is coupled to the second audio unit via a distribution board and a receiving card, and the sending card is directly coupled to the first audio unit.

[0010] Among them, a number of boxes are arranged in a matrix to form a screen area, each box corresponds to a receiving card, the receiving cards of each column of boxes are connected in series, and the distribution board is arranged in the bottom box of each column of boxes and is connected in series with the receiving cards.

[0011] The receiving card drives the second audio unit through the power amplifier board.

[0012] The sending card drives the first audio unit through a built-in power amplifier chip.

[0013] Among them, the distribution board and the receiving card are equipped with FPGA chips.

[0014] The sending card includes: a central processor, a hotspot network processor, an FPGA, an audio processing chip, a power amplifier chip and / or several communication interfaces.

[0015] Among them, the LED all-in-one machine also includes: a shell, which is arranged on the left side and / or the right side of the screen area and accommodates a second audio unit, and the second audio unit outputs audio through the sound output channel on the shell.

[0016] The LED all-in-one provided by the present application, in addition to maintaining the first audio unit originally set at the bottom of the screen area, is also provided with a second audio unit on the left and / or right side of the screen area, which can solve the problem of poor audio effect caused by the single sound unit of the LED all-in-one being blocked. Furthermore, the audio range of the second audio unit is greater than the audio range of the first audio unit, which can enhance the audio playback effect, and at the same time has low cost, is easy to standardize products, and has multi-scenario compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of an LED all-in-one machine provided by the present application;

[0019] Figure 2 It is a structural schematic diagram of another embodiment of the LED all-in-one machine provided by the present application;

[0020] Figure 3 It is a structural schematic diagram of another embodiment of the LED all-in-one machine provided by the present application;

[0021] Figure 4 It is a structural schematic diagram of another embodiment of the LED all-in-one machine provided by the present application;

[0022] Figure 5 It is a structural schematic diagram of an embodiment of a sending card provided by the present application;

[0023] Figure 6It is a structural schematic diagram of another embodiment of the LED all-in-one machine provided by the present application;

[0024] Figure 7 It is a structural schematic diagram of an embodiment of the lower frame of the LED all-in-one machine provided by the present application;

[0025] Figure 8 It is a schematic diagram of sending audio and video by the sending card provided in this application;

[0026] Fig. 9 This application provides Figure 8 Supplementary schematic diagram of

[0027] Fig.10 This application provides Figure 8 Supplementary schematic diagram of

[0028] Fig.11 This application provides Figure 8 Supplementary schematic diagram of . DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0030] In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited. The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", and "third" can explicitly or implicitly include at least one of the features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] With the rapid development of the times, technology in the display field is experiencing breakthroughs and innovations every year. LED all-in-one machines are the core products of large conference scene solutions. In the conference scene of LED all-in-one machines, meetings are the most frequently used situation. Therefore, the ability of LED all-in-one machines to display and make sounds is the most basic functional requirement. In related technologies, LED all-in-one machines generally adopt the design concept of a light built-in speaker + reserved audio interface. Since LED all-in-one machines need to retain the characteristics of assembly of any size, single cabinets are designed to be standardized, and the speakers will naturally be placed in the lower frame of the LED all-in-one machine or external speakers. This poses several problems:

[0033] 1. The sound source of the LED all-in-one machine is at the bottom of the screen, which may cause problems such as a single sound unit being blocked.

[0034] 2. The LED all-in-one machine can be connected to various speakers through external cables, but it is still inconvenient to install equipment such as sound reinforcement systems.

[0035] Based on this, the present application proposes that in addition to maintaining the first audio unit originally set at the bottom of the screen area, a second audio unit is also set on the left and / or right side of the screen area, which can solve the problem of poor audio effect caused by the blocking of a single sound unit of the LED all-in-one machine. Furthermore, the audio range of the second audio unit is greater than the audio range of the first audio unit, which can enhance the audio playback effect, while having low cost, easy product standardization, and multi-scenario compatibility. Please refer to any of the following technical solutions for details.

[0036] See also Figure 1 , Figure 1 1 is a schematic diagram of the structure of an embodiment of an LED all-in-one machine provided by the present application. The LED all-in-one machine 100 includes: a screen area, a first audio unit 20 and a second audio unit 30.

[0037] The screen area is composed of several boxes. Figure 1 As shown, the screen area is composed of box A, box B, box C, box D, box E, box F, box G, box H, and box I. In some embodiments, LED modules are provided on the boxes, and several LED modules constitute the screen area to display according to the video data.

[0038] The first audio unit 20 is arranged at the bottom of the screen area. In some embodiments, the first audio unit 20 may be composed of a speaker. In other embodiments, the first audio unit 20 may be composed of a speaker and a pickup. The first audio unit 20 is arranged at the bottom of the screen area, and other functional modules may also be arranged at the bottom of the screen area.

[0039] The second audio unit 30 is arranged on the left side of the screen area; wherein the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20. In some embodiments, the second audio unit 30 may be composed of a speaker. In other embodiments, the second audio unit 30 may be composed of a speaker and a pickup. In some embodiments, the second audio unit 30 is arranged on the left side of the screen area, i.e., the left side frame of the LED all-in-one machine 100. Because the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20, and the second audio unit 30 is arranged on the left side of the screen area, it can play sounds with a higher audio range, so as to spread farther, and is suitable for more scenarios, such as a stepped conference scenario.

[0040] In some embodiments, the second audio unit 30 may be disposed at an upper left side of the screen area.

[0041] In some embodiments, a slide rail is provided on the left side of the screen area, and the second audio unit 30 is provided on the slide rail, and the second audio unit 30 moves along the slide rail to adjust the position. That is, the second audio unit 30 moves on the slide rail to adjust the sound position of the second audio unit 30 to adapt to different sound environments.

[0042] In some embodiments, the LED integrated machine 100 further includes a sending card, a distribution board and a receiving card. The sending card is coupled to the second audio unit 30 through the distribution board and the receiving card, and the sending card is directly coupled to the first audio unit 20 .

[0043] In this embodiment, in addition to maintaining the first audio unit 20 originally set at the bottom of the screen area, a second audio unit 30 is also set on the left side of the screen area, which can solve the problem of poor audio effect caused by the blocking of a single sound unit of the LED all-in-one machine 100. Furthermore, the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20, which can enhance the audio playback effect, while having low cost, easy product standardization, and multi-scenario compatibility.

[0044] See also Figure 2 , Figure 2 1 is a schematic diagram of another embodiment of the LED all-in-one machine provided by the present application. The LED all-in-one machine 100 includes: a screen area, a first audio unit 20 and a second audio unit 30 .

[0045] The screen area is composed of several boxes. Figure 2 As shown, the screen area is composed of box A, box B, box C, box D, box E, box F, box G, box H, and box I.

[0046] The first audio unit 20 is disposed at the bottom of the screen area.

[0047] The second audio unit 30 is disposed on the right side of the screen area; wherein the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20. In some embodiments, the second audio unit 30 can be disposed at the upper right side of the screen area. In some embodiments, the second audio unit 30 is disposed on the right side of the screen area, i.e., the right side frame of the LED all-in-one machine 100.

[0048] In some embodiments, a slide rail is provided on the right side of the screen area, and the second audio unit 30 is provided on the slide rail. The second audio unit 30 moves on the slide rail to adjust the sound position of the second audio unit 30 to adapt to different sound environments.

[0049] In some embodiments, the LED integrated machine 100 further includes a sending card, a distribution board and a receiving card. The sending card is coupled to the second audio unit 30 through the distribution board and the receiving card, and the sending card is directly coupled to the first audio unit 20 .

[0050] In this embodiment, in addition to maintaining the first audio unit 20 originally set at the bottom of the screen area, a second audio unit 30 is also set on the right side of the screen area, which can solve the problem of poor audio effect caused by the blocking of a single sound unit of the LED all-in-one machine 100. Furthermore, the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20, which can enhance the audio playback effect, and at the same time has low cost, is easy to standardize products, and has multi-scenario compatibility.

[0051] See also Figure 3 , Figure 3 1 is a schematic diagram of another embodiment of the LED all-in-one machine provided by the present application. The LED all-in-one machine 100 includes: a screen area, a first audio unit 20 and a second audio unit 30 .

[0052] The screen area is composed of several boxes. Figure 3 As shown, the screen area is composed of box A, box B, box C, box D, box E, box F, box G, box H, and box I.

[0053] The first audio unit 20 is disposed at the bottom of the screen area.

[0054] The second audio unit 30 is disposed on the left and right sides of the screen area; wherein the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20 .

[0055] In some embodiments, a slide rail is provided on both the right and left sides of the screen area, and the second audio unit 30 is provided on the slide rail. The second audio unit 30 moves on the slide rail to adjust the sound position of the second audio unit 30 to adapt to different sound environments.

[0056] In some embodiments, the second audio units 30 disposed on the left and right sides of the screen area are mirror-symmetrical, which can not only ensure stable audio output, but also enhance the aesthetic appearance of the LED all-in-one machine 100.

[0057] In some embodiments, the LED all-in-one machine 100 also includes a sending card, a distribution board and a receiving card. The sending card is coupled to the second audio unit 30 through the distribution board and the receiving card. The sending card is directly coupled to the first audio unit 20. The built-in power amplifier chip in the sending card can be used to drive the first audio unit 20, thereby simplifying the circuit design.

[0058] In this embodiment, in addition to maintaining the first audio unit 20 originally set at the bottom of the screen area, second audio units 30 are also set on the left and right sides of the screen area, which can solve the problem of poor audio effect caused by the blocking of a single sound unit of the LED all-in-one machine 100. Furthermore, the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20, which can enhance the audio playback effect, while having low cost, easy product standardization, and multi-scenario compatibility.

[0059] See also Figure 4 , Figure 4 1 is a schematic diagram of another embodiment of the LED all-in-one machine provided by the present application. The LED all-in-one machine 100 includes: a screen area, a first audio unit 20, a second audio unit 30, a sending card, a distribution board and a receiving card.

[0060] The screen area is composed of several boxes.

[0061] The first audio unit 20 is disposed at the bottom of the screen area, that is, the first audio unit 20 is disposed at the lower frame of the LED all-in-one machine 100. In some embodiments, there may be two first audio units 20. One of the first audio units 20 is disposed at the right side of the bottom of the screen area, and the other first audio unit 20 is disposed at the left side of the bottom of the screen area.

[0062] The second audio unit 30 is disposed on the left and right sides of the screen area; wherein the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20 .

[0063] The sending card is coupled to the second audio unit 30 through the distribution board and the receiving card, and the sending card is directly coupled to the first audio unit 20 .

[0064] In an application scenario, such as Figure 4 As shown, a number of boxes are arranged in a matrix to form a screen area. Figure 4 As shown, a plurality of boxes are arranged in a 3*3 matrix to form a screen area. In other embodiments, the number of boxes is determined by the actual scene, such as a plurality of boxes are arranged in a 5*5 matrix to form a screen area, and a plurality of boxes are arranged in a 7*7 matrix to form a screen area.

[0065] In some embodiments, each box corresponds to a receiving card, the receiving cards of each column of boxes are connected in series, and the distribution board is arranged in the bottom box of each column of boxes and is connected in series with the receiving card. That is, in the screen area formed by the 3*3 matrix setting, there are 3 distribution boards, and the bottom box of each column of boxes is provided with a corresponding distribution board. In this way, only one distribution board is needed for each column of boxes, which can effectively reduce the number of distribution boards and save costs. Since the expansion of the screen only requires the addition of distribution cards, compared with the related art that requires as many network port sending cards as there are columns, the present application can effectively control the length and volume of the sending card, while reducing the use of wires, and the installation of the lower frame will also be more concise and beautiful. There is no need to increase the number of wires to produce all-in-one machines of different sizes, and only the line length needs to be considered.

[0066] In some embodiments, the receiving card drives the second audio unit 30 through the power amplifier board. The second audio unit 30 is coupled to the power amplifier board in the other nearest boxes. That is, the second audio unit 30 determines the target box from the leftmost column of boxes and the rightmost column of boxes, and then couples with the power amplifier board in the target box. In this way, only the power amplifier board needs to be set in the box with the second audio unit, and the other boxes do not need to be set with the power amplifier board, which can effectively reduce the number of power amplifier boards and save costs.

[0067] In some embodiments, the sending card drives the first audio unit 20 through a built-in power amplifier chip. On the one hand, the built-in power amplifier chip of the sending card is used to drive the first audio unit 20, thereby simplifying the circuit design. On the other hand, the power amplifier chip is built into the sending card, which can effectively reduce the corresponding circuit area.

[0068] In some embodiments, the distribution board and the receiving card are built with FPGA chips. Since both the distribution board and the receiving card are equipped with FPGA chips, the actual signal transmission will continuously repeat the process of signal transmission-signal reshaping and enhancement-signal transmission, which effectively avoids the problems of interference and signal attenuation caused by long-distance transmission of wires.

[0069] In this embodiment, in addition to maintaining the first audio unit 20 originally set at the bottom of the screen area, second audio units 30 are also set on the left and right sides of the screen area, which can solve the problem of poor audio effect caused by the blocking of a single sound unit of the LED all-in-one machine 100. Furthermore, the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20, which can enhance the audio playback effect, while having low cost, easy product standardization, and multi-scenario compatibility.

[0070] Furthermore, an effective sending card design is proposed in conjunction with the overall design of the LED all-in-one machine 100. Compared with the traditional sending card design, a large number of PHY (Physical Layer) chips are omitted, and at the same time, it has a higher degree of integration and is compatible with more functions, which can effectively reduce the difficulty of software development and control costs.

[0071] Furthermore, compared with the traditional network port connection design, the LED all-in-one machine 100 of this application solves the problem that all network ports in the first row must be connected to the sending card. No matter how big the screen is, the sending card only needs to lead out 2 wires, and the remaining signals only need to be transparently transmitted through the distribution card. Whether it is 5*5, 7*7 or 10*7, the all-in-one machine of this application only needs to increase the number of distribution cards to easily expand the screen size. It is convenient for users to customize the required size and resolution, greatly improving the customization speed of the product, and has unparalleled ease of production.

[0072] See also Figure 5 , Figure 5 The figure is a schematic diagram of the structure of an embodiment of a sending card provided by the present application. The sending card includes: a central processor, a hotspot network processor, an FPGA, an audio processing chip, a power amplifier chip and / or several communication interfaces.

[0073] In an application scenario, several communication interfaces may be three HDMI_INs (HDMI->MIPI), one HDMI_OUT, one PCIE (peripheral component interconnect express, high-speed serial computer expansion bus standard) to RJ45 (Registered Jack 45), one USB3.0 to RJ45 and support POE (Power over Ethernet) function, one RS232, two LVDS (Low-Voltage Differential Signaling, low voltage differential signal) sockets, USB. At the same time, the sending card supports external OPS board and matching key board. Among them, the central processor is the main logic processor of the sending card, which is used to realize the logic processing and data of the whole machine; the hotspot network processor can be connected to an external antenna for special development of network hotspots and AP functions; FPGA is used for LED display data processing to provide video source for the upper screen; the audio processing chip is responsible for the audio stream signal processing and audio algorithm implementation of the whole machine. The power amplifier chip is responsible for the bass sound signal power output of the LED all-in-one machine 100. The image information is encoded and decoded by FPGA, and finally converted into LVDS signal for output, and uploaded to the box along the path through the left and right interfaces. At the same time, the network port also supports POE power supply, and can be used as a PSE (Power Sourcing Equipment) power supply end to power the power receiving end that meets the standard. That is, in this embodiment, the sending card integrates more functions, and the design of the sending card omits a large number of PHY chips. At the same time, it has a higher degree of integration and is compatible with more functions, which can effectively reduce the difficulty of software development and control costs. And it is compatible with common needs as a whole, such as Android built-in system, PC expansion function (just connect OPS module), wireless hotspot connection, USB common device access, audio sound effect adjustment, etc., while still retaining the traditional sound reinforcement system expansion function.

[0074] In some embodiments, the LED all-in-one machine 100 further includes: a housing (not shown). The housing is disposed on the left and / or right side of the screen area, and accommodates the second audio unit 30, and the second audio unit 30 outputs audio through the sound output channel on the housing. In some embodiments, the housing can be disposed on the left and / or right side of the screen area in a edging manner, and a long strip of sound output channel is disposed on the housing. The second audio unit 30 outputs audio through the sound output channel on the housing, and the second audio unit 30 is disposed in the housing through the edging design, so as to protect the second audio unit 30 and enhance the neatness of the appearance of the LED all-in-one machine 100.

[0075] In one application scenario, see Figure 6The LED all-in-one machine 100 includes a lower frame a, a box A, a box B, a box C, a box D, a box E, a box F, a box G, a box H, a box I, a left second audio unit 30, and a right second audio unit 30. Among them, two first audio units 20 are set in the lower frame a, one on the left and one on the right, and at the same time, the left and right sides of the traditional all-in-one machine are respectively equipped with a edging with a speaker. The left second audio unit 30 and the right second audio unit 30 are both mid-high frequency speakers, which are placed vertically and symmetrically on the horizontal line. The edging can be designed normally at the box position without the second audio unit 30. The second audio unit 30 can select a long strip of mid-high frequency speakers to emit sound through the side gap.

[0076] See also Figure 7 , the lower frame integrates a sending card, an OPS card, a keypad, a RF antenna and two first audio units 20. Among them, the first audio units 20 are one on the left and one on the right. Among them, the OPS card refers to an X86 board with PC function. Nowadays, most sending cards have built-in Linux systems (generally Android systems). OPS is suitable for expanding the PC function of the LED all-in-one machine 100, with the purpose of using it with the commonly used conference software of the PC system; the keypad is connected to the sending card, and its main function is to realize the expansion function of the sending card USB (including USB20, USB30, TYPE_C, infrared remote control IR, etc.), and can connect common devices to the all-in-one machine; the RF antenna is used for the hotspot AP function, so that the LED all-in-one machine 100 has the function of accessing the wireless network.

[0077] Further, see Figure 8 , Figure 8 It is a schematic diagram of the sending card provided in this application sending audio and video. Audio and video transmission is performed through the audio and video transmission method of the sending card, the distribution board, and the receiving card. Among them, each box is equipped with a three-in-one receiving card, and a distribution board is installed at the bottom of the first box in each column. The sending card is connected to the right side / left side of the distribution board through the left LVDS interface / right LVDS interface respectively, and the remaining distribution boards only need to be connected with FFC lines, and the audio and video signals of the sending card can be transmitted all the way down to each distribution board along the wire. The main task of the distribution board is transparent transmission. It sends the data of a column to the first receiving card, and then each receiving card is connected to each other, and finally all the image information of the sending card is sent to all boxes.

[0078] Further, Fig. 9 , Fig.10 , Fig.11 Yes Figure 8It should be noted that the audio and video are connected to the same link, but the second audio unit 30 is only connected to the boxes on both sides of the LED all-in-one machine 100. The sound can be sent from the sending card along the screen wire connection path to the receiving card at the specified position, and finally connected to the power amplifier board. The power amplifier board is connected to the second audio unit 30, which supports the second audio units 30 on both sides to emit sound. Fig. 9 As shown, the sending card sends the audio / video signal to the distribution board, and the distribution board sends the audio / video signal to the receiving card coupled thereto. Then the audio / video signal is sent to the next receiving card through the receiving card. Fig.10 As shown in the figure, the receiving card in the middle receives the audio / video signal sent by the previous receiving card and sends the audio / video signal to the next receiving card. Fig.11 As shown, the receiving card coupled to the second audio unit receives the audio / video signal sent by the previous receiving card and sends the audio / video signal to the next receiving card. At the same time, the audio signal is sent to the second audio unit for playback through the power amplifier board.

[0079] It should be noted that the video signal is transmitted using the LVDS level standard, and the audio signal is transmitted using IIS. Since both the distribution board and the receiving card are equipped with FPGA chips, the actual signal transmission will continuously repeat the process of signal transmission-signal reorganization and enhancement-signal transmission, which effectively avoids interference and signal attenuation caused by long-distance transmission of wires. At the same time, each distribution board and receiving card has good stability, and can also prevent signal attenuation, signal delay, audio delay, audio noise and other problems to the greatest extent.

[0080] In one application scenario, the distribution board and the receiving card can be directly connected, or special wires can be added to slightly adjust the distance. The second audio unit 30 can be specially wrapped, and the speaker is installed vertically, slightly close to the back of the box, so that the speaker does not protrude. The first audio unit 20 can be installed in a slightly larger volume, installed in the lower frame, and covered with a cover. The signal flow design is as follows:

[0081] 1. Video streams can be combined with the above mentioned Figure 8 , Fig. 9 , Fig.10 , Fig.11 Understand. It should be noted that this design needs to consider the signal bandwidth. The amount of data from the sending card to the first-level distribution board is the largest, and the subsequent ones decrease in sequence.

[0082] 2. Audio stream design is divided into two parts:

[0083] (1) The first audio unit 20 at the bottom of the lower frame can be driven by the power amplifier chip integrated on the sending card.

[0084] (2) The second audio unit 30 can be driven by Fig. 9 , Fig.10 , Fig.11 Understanding: The sending card sends audio signals and amplifier chip configuration instructions, which are transmitted to the target box along the video stream direction. The FPGA chip of the target box receives the audio source and instructions, and directly transmits the IIS digital audio signal and configuration information to the amplifier board. The amplifier board can directly convert and drive the second audio unit 30 to output the audio signal.

[0085] In one application scenario, the cabinet is of standardized design. Since the cabinet is designed in a standardized manner, a larger screen assembly can be achieved, such as a 7*7 cabinet design. The LED all-in-one machine 100 designed by this method deviates from the conventional bottom sound in terms of sound effect, and the bass sinks. A high-power bass speaker (first audio unit 20) is installed at the bottom (responsible for frequency sound signals below 500Hz, which can be achieved by configuring the power amplifier EQ parameters); the mid-high frequency is output through the high-position side speaker (second audio unit 30), which can be transmitted to farther places (responsible for frequency sound signals around 500Hz to 10KHz, which can be achieved by configuring the power amplifier EQ parameters), so that all personnel in the scene where the LED all-in-one machine is located can have a good audio experience. Whether it is a conventional local meeting, cloud network meeting, or online teaching, audio and video playback and other scenarios, the LED all-in-one machine 100 designed in this application can meet the needs and has good application value.

[0086] In summary, the LED all-in-one machine 100 provided by the present application, in addition to maintaining the first audio unit 20 originally set at the bottom of the screen area, is also provided with a second audio unit 30 on the left and / or right side of the screen area, which can solve the problem of poor audio effect caused by the blocking of a single sound unit of the LED all-in-one machine 100. Furthermore, the audio range of the second audio unit 30 is greater than the audio range of the first audio unit 20, which can enhance the audio playback effect, and at the same time has low cost, is easy to standardize products, and has multi-scenario compatibility.

[0087] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An LED all-in-one machine, characterized in that: The LED integrated machine comprises: A screen area, wherein the screen area is composed of a plurality of boxes; A first audio unit, wherein the first audio unit is arranged at the bottom of the screen area; A second audio unit, the second audio unit is arranged on the left side and / or the right side of the screen area; The audio range of the second audio unit is greater than the audio range of the first audio unit.

2. The LED integrated machine according to claim 1, characterized in that: The second audio units disposed on the left and right sides of the screen area are mirror-symmetrical.

3. The LED integrated machine according to claim 1 or 2, characterized in that: A slide rail is arranged on the left side and / or the right side of the screen area, the second audio unit is arranged on the slide rail, and the second audio unit moves along the slide rail to adjust the position.

4. The LED integrated machine according to claim 1, characterized in that: The LED integrated machine further includes a sending card, the sending card is coupled to the second audio unit via a distribution board and a receiving card, and the sending card is directly coupled to the first audio unit.

5. The LED integrated machine according to claim 4, characterized in that: A plurality of boxes are arranged in a matrix to form the screen area, each box corresponds to a receiving card, the receiving cards in each column of boxes are connected in series, and the distribution board is arranged in the bottom box in each column of boxes and connected in series with the receiving cards.

6. The LED integrated machine according to claim 4, characterized in that: The receiving card drives the second audio unit through the power amplifier board.

7. The LED integrated machine according to claim 4, characterized in that: The sending card drives the first audio unit via a built-in power amplifier chip.

8. The LED integrated machine according to claim 4, characterized in that: The distribution board and the receiving card are equipped with FPGA chips.

9. The LED integrated machine according to claim 4, characterized in that: The sending card includes: a central processor, a hotspot network processor, an FPGA, an audio processing chip, a power amplifier chip and / or several communication interfaces.

10. The LED integrated machine according to claim 1, characterized in that: The LED all-in-one machine also includes: a shell, which is arranged on the left side and / or the right side of the screen area and accommodates the second audio unit, and the second audio unit outputs audio through the sound output channel on the shell.

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