Audio and video intelligent conference system

Abstract

The utility model provides an audio and video intelligent conference system. The audio and video intelligent conference system comprises a plurality of wireless expansion microphone devices; the audio and video conference all-in-one machine comprises a host support; the machine shell is mounted on the main machine bracket; the control main board is arranged in the shell; the microphone board is arranged in the shell and is electrically connected to the control mainboard; the plurality of built-in microphone units are distributed on the microphone board in a dot matrix shape and are used for picking up an environment sound source; and the audio power amplifier module and the image acquisition module are arranged on the shell and are electrically connected to the control mainboard. According to the audio and video intelligent conference system provided by the utility model, through the combination of the built-in microphone unit array and the wireless expansion microphone, the wireless expansion microphone can be flexibly arranged at the far and near ends of a large screen of a conference room or all directions in the conference room, and the external wired expansion microphone is used for supplementing pickup; the audio and video conference all-in-one machine enhances the audio acquisition capability of far and near ends and all directions in a conference room, realizes long-distance pickup, noise reduction and echo elimination, and meets the clear and comprehensive audio acquisition requirements of different conference scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to camera microphone integrated equipment technical field, especially relate to an audio and video intelligent meeting system. BACKGROUND

[0002] With the gradual popularization of audio and video conference, audio and video conference integrated machine gradually develops. The existing audio and video conference integrated machine on the market usually adopts built-in microphone - microphone array to pick up the conference on-site environmental sound source. Because the built-in microphone array pickup distance is limited, and the quality of the picked-up sound is poor (only 3-5 meters of pickup can be realized, the amplitude of the picked-up sound is small, and the noise is almost as large as the human voice), it is difficult to clearly collect the voice of the remote personnel when the conference room is large. Therefore, the traditional audio and video conference integrated machine usually needs to be externally connected with a wired microphone to extend to the remote end of the integrated machine for supplementary pickup.

[0003] However, the wired microphone has the defects of inconvenient movement and complex wiring, causing safety hazards of tripping personnel and affecting the neatness and beauty of the conference room, and the sound signal will be attenuated after passing through a long wire. INVENTION CONTENTS

[0004] The utility model provides an audio and video intelligent meeting system to solve the technical problems of the limited pickup distance of the built-in microphone array of the audio and video conference integrated machine, poor quality, and complex wiring of the externally connected wired microphone, and attenuation of the sound signal in long-distance wired transmission.

[0005] To solve the above problems, the utility model adopts the technical scheme of:

[0006] The utility model provides an audio and video intelligent meeting system, which comprises:

[0007] A plurality of wireless extension microphone devices; an audio and video conference integrated machine, comprising:

[0008] A host bracket;

[0009] A machine shell installed on the host bracket;

[0010] A control mainboard arranged in the machine shell;

[0011] A microphone board arranged in the machine shell and electrically connected to the control mainboard;

[0012] A plurality of built-in microphone units distributed in a dot matrix manner on the microphone board and used for picking up environmental sound sources;

[0013] A host wireless communication module arranged on the control mainboard and used for receiving environmental audio data transmitted by the wireless extension microphone device;

[0014] An audio power amplifier module and an image acquisition module are mounted on the casing and electrically connected to the control mainboard.

[0015] Further, the audio-video conference integrated machine further comprises:

[0016] A wired microphone interface is arranged on the casing and electrically connected to the control mainboard, and is used to realize wired connection between the audio-video conference integrated machine and a wired extension microphone device.

[0017] Further, the audio-video conference integrated machine further comprises:

[0018] An audio input port and an audio output port are arranged on the casing and electrically connected to the control mainboard.

[0019] Further, the audio-video conference integrated machine further comprises:

[0020] A data interface is arranged on the casing and electrically connected to the control mainboard, and is used to realize data transmission between the audio-video conference integrated machine and a computer.

[0021] Preferably, the casing comprises:

[0022] A rear shell;

[0023] A front cover is butted against the rear shell to form a closed casing;

[0024] A main machine support is mounted on the rear shell.

[0025] Further, the audio-video conference integrated machine further comprises:

[0026] A sealing ring is sealingly connected to the butt joint of the front cover and the rear shell;

[0027] A buffer pad is connected between the rear shell and the main machine support.

[0028] Preferably, the front cover is provided with a lens through hole, and the image acquisition module comprises:

[0029] A lens support is mounted on the front cover and covers the lens through hole;

[0030] A camera is mounted on the lens support and passes through the lens through hole, and is electrically connected to the control mainboard;

[0031] A glass mirror is mounted on the lens support and is oriented towards the lens of the camera.

[0032] Further, the image acquisition module further comprises:

[0033] A ring-shaped light plate is mounted on the lens support and is sleeved around the camera, and is electrically connected to the control mainboard;

[0034] A plurality of illumination units are uniformly and spacedly distributed on the ring-shaped light plate along the circumference of the ring-shaped light plate.

[0035] Preferably, the wireless extension microphone device comprises:

[0036] a bottom shell;

[0037] a top cover, which is in a closed shell with the bottom shell;

[0038] a wireless microphone mainboard, which is arranged in the shell, and the wireless microphone mainboard is provided with an extension wireless communication module for wirelessly communicating with a host wireless communication module and a signal enhancement module for enhancing the signal strength of wireless communication;

[0039] an extension microphone unit, a charging connector and a control button, which are arranged in the shell and are electrically connected to the wireless microphone mainboard.

[0040] Further, the audio and video intelligent conference system further comprises:

[0041] a remote controller, which comprises a transmitting end and a receiving end, and the receiving end is arranged in the shell and is electrically connected to the control mainboard, and is used for receiving the control instruction sent by the transmitting end.

[0042] Compared with the prior art, the audio and video intelligent conference system has the following beneficial effects:

[0043] The audio and video intelligent conference system provided by the utility model, through the built-in microphone unit array and the plurality of wireless extension microphone devices of the audio and video conference all-in-one machine, wherein the wireless extension microphone device can be flexibly arranged at the near end or the far end of the large screen in the conference room or at each orientation in the conference room according to actual needs, and through the wireless communication module, the sound signal is wirelessly transmitted to the all-in-one machine host under the gain of the signal enhancement module, and the sound signal is supplemented by the external wired extension microphone device, so that the audio and video intelligent conference system can greatly enhance the audio acquisition capability of the all-in-one machine to the near end or the far end of the conference room and each orientation, and realize long-distance sound pickup, noise reduction and echo cancellation, so as to meet the clear and comprehensive audio acquisition demand in different conference scenes and solve the technical problems of the limited sound pickup distance and poor quality of the built-in microphone array of the conventional audio and video conference all-in-one machine, and the complicated wiring and long-distance wired transmission sound signal attenuation of the external wired microphone. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical scheme provided by the utility model, the utility model will be described in detail below in combination with embodiments and drawings. It should be understood that the embodiments and drawings described in the following specific embodiments and the drawings are only some embodiments of the utility model, and those skilled in the art can change the drawings under the concept of the utility model.

[0045] Figure 1 It is a three-dimensional structure schematic diagram of the embodiment of the audio and video conference all-in-one machine provided by the utility model;

[0046] Figure 2The front view structural schematic diagram of the embodiment of the audio and video conference integrated machine provided by the utility model;

[0047] Figure 3 The rear view structural schematic diagram of the embodiment of the audio and video conference integrated machine provided by the utility model;

[0048] Figure 4 The top view structural schematic diagram of the embodiment of the audio and video conference integrated machine provided by the utility model;

[0049] Figure 5 The bottom view structural schematic diagram of the embodiment of the audio and video conference integrated machine provided by the utility model;

[0050] Figure 6 The side view structural schematic diagram of the embodiment of the audio and video conference integrated machine provided by the utility model;

[0051] Figure 7 The exploded structural schematic diagram of the embodiment of the audio and video conference integrated machine provided by the utility model;

[0052] Figure 8 The circuit principle framework diagram of the embodiment of the audio and video conference integrated machine provided by the utility model;

[0053] Figure 9 The three-dimensional structural schematic diagram of the embodiment of the wireless expansion microphone device provided by the utility model;

[0054] Figure 10 The front view structural schematic diagram of the embodiment of the wireless expansion microphone device provided by the utility model;

[0055] Figure 11 The bottom view structural schematic diagram of the embodiment of the wireless expansion microphone device provided by the utility model;

[0056] Figure 12 The exploded structural schematic diagram of the embodiment of the wireless expansion microphone device provided by the utility model.

[0057] In the drawings, the main marks are as follows:

[0058] 1, host support; 11, buffer pad; 2, casing; 21, front cover; 211, lens through hole; 22, rear shell; 220, interface accommodating groove; 221, audio input port; 222, audio output port; 223, data interface; 224, decorative hole; 225, inlay groove; 226, inverter hole; 227, aesthetic groove; 228, nameplate placement groove, 229, anti-theft lock hole; 23, sealing ring; 3, control mainboard; 30, host control chip; 31, wired microphone interface; 32, second ADC analog-digital converter; 33, first ADC analog-digital converter; 34, host wireless communication module; 4, microphone board; 41, built-in microphone unit; 5, audio power amplifier module; 51, DAC digital-analog converter; 52, PA amplification circuit; 53, loudspeaker; 6, image acquisition module; 61, lens support; 62, camera; 63, glass mirror; 64, ring-shaped light plate; 65, lighting unit; 7, DC power supply; 71, power interface; 72, DC-DC converter; 8, wireless expansion microphone device; 80, expansion wireless communication module; 81, housing; 811, bottom shell; 8111, mounting pillar; 8112, fixing groove; 812, top cover; 82, wireless microphone mainboard; 821, power supply interface; 822, connection interface; 823, key contact; 83, expansion microphone unit; 84, charging connector; 85, control key; 86, battery; 87, shielding cover; 88, flip cover; 89, support foot pad; 9, receiving end. DETAILED DESCRIPTION

[0059] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be further described in detail below in combination with the drawings and embodiments. Figures 1-12 DETAILED DESCRIPTION

[0060] Please refer to Figures 1-8 The audio and video intelligent conference system provided by the utility model comprises:

[0061] A plurality of wireless expansion microphone devices 8;

[0062] The audio and video conference all-in-one machine comprises:

[0063] The host support 1; the casing 2 is installed on the host support 1; the control mainboard 3 is arranged in the casing 2; the microphone board 4 is arranged in the casing 2 and electrically connected to the control mainboard 3; a plurality of built-in microphone units 41 are distributed on the microphone board 4 in a dot matrix manner and used as built-in microphones of the audio and video conference all-in-one machine to pick up the environmental audio source of the near end of the audio and video conference all-in-one machine; the host wireless communication module 34 is arranged on the control mainboard 3 and used for receiving the environmental audio data of the far end of the audio and video conference all-in-one machine transmitted by the wireless expansion microphone device 8; the audio power amplifier module 5 and the image acquisition module 6 are installed on the casing 2 and electrically connected to the control mainboard 3.

[0064] Please see Figures 1-7 In the embodiment, the host support 1 can be fixedly installed on the top of a computer display screen or a large screen in a conference room, and can be used as a pitch adjusting base of the audio and video conference integrated machine when placed on a desktop or a horizontal support table.

[0065] Please see Figure 7 In the embodiment, the microphone board 4 preferably adopts a microphone array board containing microphone circuits, a plurality of built-in microphone units 41 are distributed on the microphone board 4 in a dot matrix manner, and are electrically connected to the control mainboard 3 through the microphone board 4, so as to form a built-in microphone array to pick up sound near the audio and video conference integrated machine.

[0066] Please see Figure 8 As a more preferred embodiment of the embodiment, the microphone circuit includes a DSP voice processor (not shown in the figure, containing an audio encoder / decoder), and the built-in microphone unit 41 is electrically connected to the DSP voice processor to transmit collected voice data to the DSP voice processor for algorithm processing; the DSP voice processor is electrically connected to the control mainboard 3, so that the data is processed again through the control mainboard 3, to realize functions such as long-distance sound pickup, noise reduction, echo cancellation, etc.

[0067] Please see Figure 7 , 8 As a preferred embodiment of the embodiment, the number of built-in microphone units 41 in the built-in microphone array (dot matrix) is four, and each is wirelessly connected to a wireless expansion microphone device 8.

[0068] The audio and video conference integrated machine provided by the utility model, through built-in microphone unit 41 array and a plurality of wireless expansion microphone device 8 combination, wherein wireless expansion microphone device 8 can be arranged flexibly in the conference room large screen near end or in each direction in the conference room according to actual needs, and through the wireless communication module under the gain of the signal enhancement module, ensure that the far-end sound signal is transmitted wirelessly to the host of the audio and video conference integrated machine at a long distance, supplemented by the external wired expansion microphone device for sound pickup, so that the audio and video conference integrated machine greatly enhances the audio acquisition capability of the near end and each direction in the conference room, and meets the clear and comprehensive audio acquisition demand in different conference scenes. The technical problems such as the limited pickup distance and poor quality of the built-in microphone array of the conventional audio and video conference integrated machine, the complicated wiring of the external wired microphone, the attenuation of the long-distance wired transmission sound signal and the like are solved.

[0069] In the embodiment, the control mainboard 3 is provided with a host control chip 30 (CPU), and the host control chip 30 preferably adopts an RV1109 chip or an RV1126 chip.

[0070] Please see Figure 8In the embodiment, the audio power amplifier module 5 comprises:

[0071] a DAC (Digital-to-Analog Converter) 51 electrically connected to the control mainboard 3; a PA (Power Amplifier) 52 electrically connected to the DAC 51, for realizing audio power amplification; and a loudspeaker 53 electrically connected to the PA 52.

[0072] As a preferred embodiment of the present application, the loudspeaker 53 is a 5W high-fidelity loudspeaker, so as to provide better audio playing effect.

[0073] Please refer to Figure 3 , 8 In the embodiment, the audio-video conference integrated machine further comprises:

[0074] a DC power supply 7 arranged on the casing 2 and electrically connected to the control mainboard 3.

[0075] Please refer to Figure 3 , 8 As a preferred embodiment of the present application, the power interface 71 of the DC power supply 7 extends out of the casing 2 from the corresponding accommodation opening of the casing 2, and the audio-video conference integrated machine further comprises:

[0076] a DC-DC converter 72 electrically connected to the control mainboard 3, and one end of the DC power supply 7 opposite to the power interface 71 is electrically connected to the DC-DC converter 72.

[0077] Please refer to Figure 8 As a more preferred embodiment of the present application, the DC power supply 7 is a 12V DC power supply, and the DC-DC converter 72 is a 12V-5V converter.

[0078] Please refer to Figure 3 , 7 , 8 As a preferred embodiment of the present application, the audio-video conference integrated machine further comprises:

[0079] a wired microphone interface 31 arranged on the casing 2 and electrically connected to the control mainboard 3, for realizing wired connection between the audio-video conference integrated machine and the wired extension microphone device.

[0080] Please refer to Figure 3 , 7 , 8 As a more preferred embodiment of the present application, the wired microphone interface 31 is an RJ11 interface or an RJ45 interface, one end of the wired microphone interface 31 for electrically connecting the control mainboard 3 is arranged on the control mainboard 3, and the other end of the wired microphone interface 31 for electrically connecting the wired extension microphone device extends out of the casing 2 from the corresponding accommodation opening of the casing 2.

[0081] Please refer to Figure 3 , 8, as the preferred embodiment of the present embodiment, the audio and video conference integrated machine further comprises:

[0082] The audio input port 221 and the audio output port 222 are arranged on the shell 2 and electrically connected to the control mainboard 3.

[0083] Please see Figure 3 、 8 , as a more preferred embodiment of the present embodiment, the audio output port 222 is electrically connected to the DAC digital-analog converter 51, and the audio and video conference integrated machine further comprises:

[0084] The first ADC analog-digital converter 33 is electrically connected to the control mainboard 3, and the audio input port 221 is electrically connected to the first ADC analog-digital converter 33.

[0085] As a more preferred embodiment of the present embodiment, the audio input port 221 adopts a 3.5mm audio input port, and the audio output port 222 adopts a 3.5mm audio output port.

[0086] The audio and video conference integrated machine provided by the utility model reserves 3.5mm audio input port 221 / audio output port 222, which is convenient for connecting external audio equipment, can adapt to different conference environments and equipment requirements, and enhances the expansibility and compatibility of the equipment.

[0087] Please see Figure 3 、 8 , in the present embodiment, the audio and video conference integrated machine further comprises:

[0088] The data interface 223 is arranged on the shell 2 and electrically connected to the control mainboard 3, and is used for realizing data transmission between the audio and video conference integrated machine and a computer.

[0089] As a preferred embodiment of the present embodiment, the data interface 223 adopts a Type-C interface.

[0090] In other embodiments of the present embodiment, the data interface 223 can also adopt a USB interface.

[0091] Please see Figures 1-7 , in the present embodiment, the shell 2 comprises:

[0092] The rear shell 22; the front cover 21 is connected to the rear shell 22 to form a closed shell 2; and the above-mentioned host support 1 is installed on the rear shell 22.

[0093] Please see Figure 1 、 4 -5, 7, as a preferred embodiment of the present embodiment, the rear shell 22 is used for the front end opening of the front cover 21, and a plurality of decorative holes 224 are uniformly and spaced apart on the upper side and the lower side of the rear shell 22.

[0094] As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality. Figure 7 As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality.

[0095] As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality. Figure 3 As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality.

[0096] As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality. Figure 3 As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality.

[0097] As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality. Figure 3 As a more preferred embodiment of the present application, a rear side of the rear shell 22 opposite to the front cover 21 is provided with a reverse phase hole 226, which extends into the sound cavity surrounded by the shell 2, and plays a role of expanding low frequency sound waves and avoiding resonance accumulation to ensure pure sound quality.

[0098] The audio and video conference integrated machine provided by the present application adopts the above reasonable layout of the DC power supply 7, the wired microphone interface 31, the audio input port 221, the audio output port 222 and the data interface 223, and guarantees the equipment expansibility and ease of use.

[0099] As a more preferred embodiment of the present application, the audio and video conference integrated machine further comprises: Figure 7 The sealing ring 23 is sealingly connected to the butt joint of the front cover 21 and the rear shell 22, and the buffer pad 11 is connected between the rear shell 22 and the host support 1.

[0100] The sealing ring 23 is sealingly connected to the butt joint of the front cover 21 and the rear shell 22, and the buffer pad 11 is connected between the rear shell 22 and the host support 1. As a more preferred embodiment of the present application, the buffer pad 11 is made of silica gel pad.

[0101] As a more preferred embodiment of the present application, the buffer pad 11 is made of silica gel pad. As a more preferred embodiment of the present application, the buffer pad 11 is made of silica gel pad.

[0102] In other embodiments of the present application, the buffer pad 11 can also be made of other elastic plastic or rubber materials.

[0103] Referring to Figure 7 In the embodiment, the front cover 21 is provided with a lens through hole 211, and the image acquisition module 6 comprises:

[0104] a lens holder 61 mounted on the front cover 21 and covering the lens through hole 211, a camera 62 mounted on the lens holder 61 and penetrating through the lens through hole 211 and electrically connected to the control mainboard 3, and a glass lens 63 mounted on the lens holder 61 and facing the lens of the camera 62.

[0105] Referring to Figure 7 In the preferred embodiment of the embodiment, the image acquisition module 6 further comprises:

[0106] a ring-shaped lamp plate 64 mounted on the lens holder 61 and sleeved on the camera 62, and electrically connected to the control mainboard 3, and a plurality of illumination units 65 uniformly and spacedly distributed on the ring-shaped lamp plate 64 along the circumference of the ring-shaped lamp plate 64, forming an indicator light array around the camera 62 (lens outer ring).

[0107] Referring to Figure 7 As a preferred embodiment of the embodiment, the illumination unit 65 adopts an LED unit capable of realizing red, blue and green color switching, and a plurality of illumination units 65 are arranged around the lens outer ring to form an indicator light array, which can realize different color display and quantity change through circuit control and software algorithm.

[0108] As a more preferred embodiment of the embodiment, the color display and quantity change scheme of the indicator light array is as follows:

[0109] ①After the audio and video conference integrated machine is connected to the power supply, the indicator light array is bright green clockwise to indicate that the system is starting;

[0110] ②After the system is started, the indicator light array is bright green;

[0111] ③The indicator light array is bright blue to indicate that the computer has called the camera 62 of the audio and video conference integrated machine;

[0112] ④When the volume is increased or decreased, the indicator light array is reduced or increased respectively, and when the volume is 100%, the indicator light array is bright green, and when the volume is 0%, the indicator light array is all off;

[0113] ⑤When the microphone is muted, the indicator light array is bright red.

[0114] The audio and video conference integrated machine provided by the utility model adopts the design of the indicator light array surrounding the lens outer ring, improves the product appearance degree and the practicability, realizes the intuitive feedback of various information such as system starting, camera 62 starting and volume size through the indicator light array of the lens outer ring, enables the user to quickly and intuitively understand the equipment state of the audio and video conference integrated machine, and improves the use convenience.

[0115] As a preferred embodiment of the embodiment, the camera 62 adopts a 4K high-definition camera.

[0116] As a more preferred embodiment of the embodiment, the camera 62 adopts a 4K high-definition camera with AI face tracking, automatic framing and sound source positioning functions, and simultaneously has a 6-fold digital zoom function, a 116° wide-angle view angle, and the AI algorithm is used to analyze the face information in the picture and the sound source direction in real time, and the focal length and picture composition of the camera 62 are automatically adjusted, so that the automatic focusing of the participants can be realized, the best conference scene picture can be automatically acquired and presented in real time, the participants can be ensured to be in the clear and appropriate picture all the time, and the video conference visual experience is improved.

[0117] Please refer to Figures 1-12 The utility model also provides an audio and video intelligent conference system which comprises a computer and a plurality of wireless extension microphone devices 8 and further comprises the audio and video conference integrated machine.

[0118] Please refer to Figures 9-12 In the embodiment, the wireless extension microphone device 8 comprises:

[0119] The bottom shell 811, the top cover 812, the wireless microphone mainboard 82, the extension microphone unit 83, the charging connector 84 and the control button 85 are arranged on the shell body 81 and are electrically connected to the wireless microphone mainboard 82, wherein the extension microphone unit 83 is used for collecting and acquiring environmental audio data, the charging connector 84 is used for connecting with a charging device to charge the battery 86 of the wireless extension microphone device 8, and the control button 85 is used for realizing the instruction control of the wireless extension microphone device 8.

[0120] Please refer to Figure 8 As a more preferred embodiment of the embodiment, the audio and video conference integrated machine further comprises:

[0121] The second ADC (analog-to-digital converter) 32 is electrically connected to the control mainboard 3, and the host wireless communication module 34 is electrically connected to the second ADC 32.

[0122] After the extended microphone unit 83 picks up the far-end environmental sound source, the audio data is transmitted to the wireless microphone mainboard 82 through the connecting line. The wireless microphone mainboard 82 transmits the audio data collected by the extended microphone unit 83 to the host wireless communication module 34 in real time through the extended wireless communication module 80. The host wireless communication module 34 converts the received audio data signal into an audio analog signal data recognizable by the second ADC analog-to-digital converter 32. The second ADC analog-to-digital converter 32 converts the audio analog signal data into audio digital signal data and transmits it to the host control chip 30. Then the host control chip 30 analyzes the audio digital signal data through an audio algorithm, and finally obtains clean and clear human voice digital signal data.

[0123] Next, the host control chip 30 transmits the human voice digital signal data to the DAC digital-to-analog converter 51 of the audio power amplifier module 5. The DAC digital-to-analog converter 51 converts the human voice digital signal data into an audio analog signal data recognizable by the loudspeaker 53. Then the DAC digital-to-analog converter 51 transmits the audio analog signal data to the PA amplification circuit 52. After the audio analog signal data is amplified by the PA amplification circuit 52, it is finally transmitted to the loudspeaker 53.

[0124] Please refer to Figure 12 As a preferred embodiment of the present embodiment, the wireless extended microphone device 8 further comprises:

[0125] The battery 86 is arranged in the shell 81. The power supply interface 821 is arranged on the wireless microphone mainboard 82 and is used to realize the power supply connection between the battery 86 and the wireless microphone mainboard 82. The connecting interface 822 is arranged on the wireless microphone mainboard 82 and is used to realize the data connection between the extended microphone unit 83 and the wireless microphone mainboard 82.

[0126] Please refer to Figure 12 As a preferred embodiment of the present embodiment, the inner side of the bottom shell 811 is provided with a fixing groove 8112. The extended microphone unit 83 is embedded in the fixing groove 8112 and is sealed by the sound-absorbing cotton (not shown in the figure) arranged between the extended microphone unit 83 and the fixing groove 8112.

[0127] Please refer to Figure 12 As a preferred embodiment of the present embodiment, the inner side of the bottom shell 811 is provided with a plurality of mounting pillars 8111. The mounting pillars 8111 are provided with threaded holes. The wireless microphone mainboard 82 is provided with screw through holes matched with the threaded holes. The wireless microphone mainboard 82 is fastened and connected to the inner side of the bottom shell 811 by connecting screws passing through the corresponding screw through holes and threaded holes.

[0128] Please refer to Figure 11As a preferred embodiment of the present embodiment, the bottom shell 811 is provided with a turnover cover 88 for opening and closing the access to the battery 86.

[0129] As a more preferred embodiment of the present embodiment, the support foot pads 89 are made of silica gel.

[0130] In other embodiments of the present embodiment, the support foot pads 89 can also be made of other elastic plastic or rubber materials.

[0131] As a preferred embodiment of the present embodiment, the wireless communication module 80 is a 2.4G wireless communication module that can use a 2.4G wireless communication protocol under the signal enhancement of the signal enhancement module.

[0132] As a preferred embodiment of the present embodiment, the wireless microphone mainboard 82 is provided with an expansion control chip (not shown in the figure), and the wireless microphone extension device 8 further comprises: Figure 12

[0133] A shielding cover 87 is installed on the wireless microphone mainboard 82 and covers the outside of the expansion control chip.

[0134] As a preferred embodiment of the present embodiment, the audio and video intelligent conference system comprises four wireless microphone extension devices 8.

[0135] The audio and video intelligent conference system provided by the present application realizes clear and comprehensive audio acquisition and playback by combining the wireless microphone extension device 8 and the microphone array board (microphone board 4) of the audio and video conference all-in-one machine containing a microphone circuit, and assisting with a high-fidelity loudspeaker 53, thereby meeting the sound requirements and high-quality audio experience in different conference scenarios and improving the accuracy and smoothness of audio and video conference communication.

[0136] As a preferred embodiment of the present embodiment, the charging connector 84 is a magnetic connector for connecting with a magnetic charging pile to charge the battery 86. Figure 9 10 As a preferred embodiment of the present embodiment, the control button 85 is preferably a touch button, and the wireless microphone mainboard 82 is provided with a button contact 823 for electrically connecting with the touch button.

[0137] In other embodiments of the present embodiment, the control button 85 can also be a mechanical button. Figure 9 12 As a preferred embodiment of the present embodiment, the control button 85 is preferably a touch button, and the wireless microphone mainboard 82 is provided with a button contact 823 for electrically connecting with the touch button.

[0138] In other embodiments of the present embodiment, the control button 85 can also be a mechanical button.

[0139] As a preferred embodiment of the present embodiment, the control button 85 is preferably a touch button, and the wireless microphone mainboard 82 is provided with a button contact 823 for electrically connecting with the touch button. Figure 8 ​​​In the embodiment, the audio and video intelligent conference system further comprises:

[0140] The remote controller comprises a transmitting end (not shown in the figure) and a receiving end 9, the receiving end 9 is arranged in the shell 2 and is electrically connected to the control mainboard 3, and is used for receiving the control instruction sent by the transmitting end.

[0141] As a preferred embodiment of the embodiment, the remote controller is a multifunctional IR infrared remote controller, the transmitting end is an IR infrared transmitting end with multiple keys and capable of realizing multiple instruction control, and the receiving end 9 is an IR infrared receiving end 9.

[0142] In other embodiments of the embodiment, the remote controller can also be an RF radio remote controller, and the receiver can also be an RF radio receiver.

[0143] The audio and video intelligent conference system provided by the utility model realizes the convenient control of multiple functions of the audio and video conference all-in-one machine through the multifunctional remote controller, reduces operation steps and lowers the use difficulty, improves the operation convenience of the audio and video conference all-in-one machine, and further improves the audio and video conference efficiency.

[0144] Please refer to Figures 1-12 In summary, the audio and video intelligent conference system provided by the utility model is composed of four sub-systems, namely, a connection sub-system, an audio sub-system, a video sub-system and a remote control sub-system, wherein:

[0145] The connection sub-system comprises the above-mentioned DC power supply 7 (preferably 12V DC power supply 7) arranged on the audio and video conference all-in-one machine, a data interface 223 (preferably Type-C interface) connecting the audio and video conference all-in-one machine and the computer, realizes the transmission of audio and video data between the audio and video conference all-in-one machine and the computer and the device control of the audio and video conference all-in-one machine, and further comprises the above-mentioned wired microphone interface 31 (preferably RJ11 interface or RJ45 interface) reserved on the audio and video conference all-in-one machine, an audio input port 221 (preferably 3.5mm audio input port 221) and an audio output port 222 (preferably 3.5mm audio output port 222) to assist the wireless extension microphone to realize the all-around audio acquisition in the conference room.

[0146] The audio subsystem includes the above-mentioned microphone panel 4 (preferably a microphone array panel containing a microphone circuit, and the microphone circuit preferably includes a DSP voice processor containing an audio codec), the built-in microphone unit 41 dot matrix, the audio power amplifier module 5 (preferably including a PA amplification circuit 52 and a loudspeaker 53, and the loudspeaker 53 is preferably a 5W high-fidelity loudspeaker 53), and the above-mentioned independent wireless extension microphone device 8 (preferably containing a 2.4G communication chip, a battery 86 and a signal enhancement module) and the external wired extension microphone device, the wireless extension microphone device 8 is connected with the all-in-one machine through a specific wireless communication protocol (preferably a 2.4G communication protocol), and the audio data is processed twice through the DSP voice processor and the control mainboard 3, so as to realize the functions of long-distance sound pickup, noise reduction, echo cancellation and the like.

[0147] The video subsystem includes the above-mentioned camera 62 (preferably a 4K high-definition camera 62 with face tracking and automatic framing functions) provided in the audio and video conference all-in-one machine, which has a 6-fold digital zoom function and a 116° wide-angle view, and automatically adjusts the focal length and picture composition of the camera 62 through AI algorithm to analyze the face information and sound source direction in the picture in real time; and the above-mentioned indicator light array arranged along the outer circle of the lens realizes different color display and quantity change through circuit control and software algorithm, so as to indicate various information such as system start, camera 62 activation and volume size to the participants through the different colors and quantity changes of the indicator light array.

[0148] The remote control subsystem includes the above-mentioned remote controller, and the remote controller is preferably an infrared remote controller including an independent infrared emission end and the above-mentioned infrared receiving end 9 provided in the audio and video conference all-in-one machine.

[0149] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and those skilled in the art should understand that any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intelligent audio-visual conferencing system, characterized in that, include: Several wireless extension microphone devices (8); Audio and video conferencing all-in-one machine, including: Main unit bracket (1); The housing (2) is mounted on the main unit bracket (1); The control motherboard (3) is located inside the housing (2); The microphone board (4) is located inside the housing (2) and electrically connected to the control motherboard (3); Several built-in microphone units (41) are distributed in a dot matrix on the microphone board (4) for picking up ambient sound sources; The host wireless communication module (34) is located on the control motherboard (3) and is used to receive the ambient audio data transmitted by the wireless extension microphone device (8); The audio amplifier module (5) and the image acquisition module (6) are mounted on the housing (2) and electrically connected to the control motherboard (3).

2. The audio and video intelligent conferencing system as described in claim 1, characterized in that, The audio and video conferencing all-in-one machine also includes: A wired microphone interface (31) is located on the housing (2) and electrically connected to the control motherboard (3) to realize the wired connection between the audio and video conferencing all-in-one machine and the wired extended microphone device.

3. The audio and video intelligent conferencing system as described in claim 1, characterized in that, The audio and video conferencing all-in-one machine also includes: An audio input port (221) and an audio output port (222) are located on the housing (2) and electrically connected to the control motherboard (3).

4. The audio and video intelligent conferencing system as described in claim 1, characterized in that, The audio and video conferencing all-in-one machine also includes: A data interface (223) is located on the housing (2) and electrically connected to the control motherboard (3) for realizing data transmission between the audio and video conferencing all-in-one machine and the computer.

5. The audio and video intelligent conferencing system as described in any one of claims 1-4, characterized in that, The housing (2) includes: Rear shell (22); The front cover (21) is joined with the rear shell (22) to form a closed housing (2); The main unit bracket (1) is mounted on the rear shell (22).

6. The audio and video intelligent conferencing system as described in claim 5, characterized in that, The audio and video conferencing all-in-one machine also includes: A sealing ring (23) is used to seal the connection between the front cover (21) and the rear shell (22); A buffer pad (11) is connected between the rear shell (22) and the main unit bracket (1).

7. The audio and video intelligent conferencing system as described in claim 5, characterized in that, The front cover (21) is provided with a lens perforation (211), and the image acquisition module (6) includes: A lens bracket (61) is mounted on the front cover (21) and covers the lens perforation (211); The camera (62) is mounted on the lens bracket (61) and passes through the lens hole (211), and is electrically connected to the control motherboard (3); A glass mirror (63) is mounted on a lens bracket (61) and faces the lens orientation of the camera (62).

8. The audio and video intelligent conferencing system as described in claim 7, characterized in that, The image acquisition module (6) also includes: A ring-shaped light panel (64) is installed on the lens bracket (61) and sleeved around the camera (62), and is electrically connected to the control motherboard (3); Several lighting units (65) are evenly spaced on the annular lamp plate (64) along the circumference of the annular lamp plate (64).

9. The audio and video intelligent conferencing system as described in claim 8, characterized in that, The wireless extension microphone device (8) includes: Bottom shell (811); The top cover (812) is mated with the bottom shell (811) to form a closed shell (81); The wireless microphone motherboard (82) is located inside the housing (81). The wireless microphone motherboard (82) is provided with an extended wireless communication module for wireless communication with the host wireless communication module (34) and a signal enhancement module for enhancing the signal strength of wireless communication. An extended microphone unit (83), a charging connector (84), and control buttons (85) are mounted on the housing (81) and electrically connected to the wireless microphone motherboard (82).

10. The audio and video intelligent conferencing system as described in claim 8, characterized in that, Also includes: The remote controller includes a transmitter and a receiver (9). The receiver (9) is located inside the housing (2) and electrically connected to the control motherboard (3) for receiving control commands issued by the transmitter.

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