CN219459161U - Wireless intelligent audio-video conference terminal with operating system - Google Patents

Abstract

The utility model discloses a wireless intelligent audio/video conference terminal with an operating system, which comprises a screen playing terminal, a wireless audio/video receiving and transmitting terminal, a sound box terminal and a plurality of wireless microphones. Displaying images of the conference site in a video mode through a screen playing terminal and playing the PPT manuscript; the wireless audio/video receiving and transmitting terminal with a camera can record the scene of the meeting place and then transmit the scene to the screen playing terminal; meanwhile, the wireless audio/video receiving and transmitting terminal has a wireless receiving and transmitting function, can wirelessly receive video signals sent by the sound box terminal, and then transmits the video signals to the screen playing terminal for playing. The sound box terminal can also simultaneously pick up the sound of meeting personnel with a plurality of wireless microphones in all directions, and on the one hand directly broadcast by the sound box terminal, on the other hand still passes to the high in the clouds through computer PC.

Description

Wireless intelligent audio-video conference terminal with operating system

Technical Field

The utility model relates to the technical field of conference devices, in particular to a wireless intelligent audio/video conference terminal with an operating system.

Background

Devices used in existing conference systems mainly include wired conference systems and wireless conference systems.

In the wired conference system, the devices for speaking such as the microphones of the participants and the devices for speaking such as the microphones of the conference participants need to be connected to the control device through cables, and the conference participants control the communication of the devices for speaking such as the microphones of the participants through the control device, so that which participant can speak can be determined. On the one hand, a large number of cables need to be deployed in advance at a conference place, and on the other hand, the control device needs to be provided with connectors with the same number as the number of the participants to ensure that each participant has the opportunity to speak. Disadvantages of wired connection: connection switching of the control device is tedious and frequent, and connection failure is easily caused. The wired connection mode has the advantages that: the radio frequency resource is not occupied, and the communication is not easy to be interfered by the outside under the condition of ensuring the connection reliability.

In the wireless conference system, devices for speaking such as microphones of participants and devices for speaking such as microphones of conference owners can be connected to the control device through radio frequency such as a WIFI module, so that the work of cable deployment is omitted, and the risk of cable connection faults is avoided. For example, chinese patent CN101364886B provides a wireless conference system for transmitting voice and video information through WIFI, and this patent provides a manner that a notebook computer or a smart phone is wirelessly connected to a conference host through WIFI, but does not support a manner that a notebook computer or a smart phone drags a plurality of microphones simultaneously to be wirelessly connected to each microphone.

The chinese patent CN101827245A also provides a wireless conference system and a data transmission method thereof, but in the above patent documents, audio information needs to be processed in advance to convert an analog signal into a digital signal and then transmitted, so that a relatively wide radio frequency band is required for transmitting the audio information, and the audio information cannot be uploaded and downloaded by more than two persons at a time, and a manner of dragging multiple microphones and wirelessly connecting each microphone is not supported.

Disclosure of Invention

In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its main purpose is to provide a wireless intelligent audio/video conference terminal with an operating system, wherein wireless transmission is supported between each functional device, so as to provide better experience for participants.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a wireless intelligent audio/video conference terminal with an operating system comprises

A screen playing terminal is provided with a screen playing terminal,

the wireless audio/video receiving and transmitting terminal comprises a camera, the camera is connected with a light sensing chip, the light sensing chip is connected with a first image processing chip, the first image processing chip is respectively connected with a first 2.4/5.8G radio frequency module and an audio/video interface, and the audio/video interface is connected with the screen playing terminal in a wired manner;

the loudspeaker box terminal comprises a loudspeaker, the loudspeaker is electrically connected with the power amplification chip, the power amplification chip is electrically connected with the second audio LE-audio2.4G module, the loudspeaker box terminal is provided with a second 2.4/5.8G radio frequency module, the second 2.4/5.8G radio frequency module is electrically connected with the second image processing chip, and the second 2.4/5.8G radio frequency module is in pairing wireless connection with the first 2.4/5.8G radio frequency module; the second image processing chip and the second audio LE-Audio2.4G module are connected to the HUB chip;

each wireless microphone is provided with a pickup head, the pickup heads are electrically connected with an audio processing chip, the audio processing chip is connected with a first audio LE-Audio2.4G module, and each first audio LE-Audio2.4G module is in pairing wireless connection with a second audio LE-Audio2.4G module.

As a preferable scheme, the sound box terminal is connected with a computer PC through a USB cable.

As a preferable scheme, the audio-video interface of the wireless audio-video receiving and transmitting terminal is an HDMI interface, the screen playing terminal is a conference display screen, and the audio-video interface is connected with the screen playing terminal through an HDMI cable.

As a preferable scheme, the sound box terminal is provided with a first key and a second key.

As a preferred scheme, microphone keys are arranged on each wireless microphone.

As a preferred solution, the wireless microphone is an omni-directional microphone.

As a preferable mode, the wireless microphone is provided with a rechargeable battery.

As a preferable scheme, rechargeable battery connects the chip that charges, the chip that charges connects Type-C interface, type-C interface pluggable connection 5V power adapter.

Compared with the prior art, the method has obvious advantages and beneficial effects, and particularly, as can be seen from the technical scheme, the video mode of the conference site image is displayed and the PPT lecture is played through the screen playing terminal; the wireless audio/video receiving and transmitting terminal with a camera can record the scene of the meeting place and then transmit the scene to the screen playing terminal; the signal of the camera is sent to a computer PC, and the computer PC gives conference software to a far end; meanwhile, the wireless audio/video receiving and transmitting terminal has a wireless receiving and transmitting function, can wirelessly receive video signals sent by the sound box terminal, and then transmits the video signals to the screen playing terminal for playing. The sound box terminal can also simultaneously pick up the sound of meeting personnel with a plurality of wireless microphones in all directions, and on the one hand directly broadcast by the sound box terminal, on the other hand still passes to the high in the clouds through computer PC.

In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic diagram of a wireless intelligent audio video conference terminal with an operating system according to an embodiment of the present utility model.

Fig. 2 is a block diagram of a circuit configuration of a speaker terminal according to an embodiment of the present utility model.

Fig. 3 is a block diagram of a system circuit configuration of a wireless intelligent audio-video conference terminal with an operating system according to an embodiment of the present utility model.

Fig. 4 is a block diagram showing a circuit configuration of a wireless audio/video transceiving terminal according to an embodiment of the present utility model.

Fig. 5 is a block diagram of a circuit configuration of a wireless microphone according to an embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. screen playing terminal 20, wireless audio/video receiving and transmitting terminal

21. Camera 22 and light sensing chip

23. First image processing chip 24, first 2.4/5.8G radio frequency module

25. Audio/video interface 30 and sound box terminal

31. Horn 32 and power amplifier chip

33. Second audio LE-Audio2.4G module 34, second 2.4/5.8G radio frequency module

35. Second image processing chip 36, HUB chip

37. First key 38, second key

40. Wireless microphone

401. First microphone 402, second microphone

403. Third microphone 404, fourth microphone

405. Fifth microphone 406, sixth microphone

41. Pick-up head 42 and audio processing chip

43. First audio LE-Audio2.4G module 44, microphone button

45. Rechargeable battery 46 and charging chip

47. Type-C interface 48, 5V power adapter

50. Computer PC 60, high in the clouds.

Detailed Description

Referring to fig. 1 to 3, which show specific structures of a preferred embodiment of the present utility model, a wireless intelligent audio/video conference terminal with an operation system includes a screen playing terminal 10, a wireless audio/video receiving and transmitting terminal 20, a speaker terminal 30 and a plurality of wireless microphones 40.

The screen-playing terminal 10 is a large display, and may be a touch display with an operating system dedicated to a conference, for example. The screen playing terminal 10 can be used for arbitrarily customizing the touch all-in-one machines with the dimensions of 32 inches, 42 inches, 46 inches, 60 inches, 70 inches and 84 inches according to the size of a conference room.

In one embodiment, the lcd of the screen playing terminal 10 adopts an ultra-thin LED lcd a gauge screen, with a high definition resolution of 1920×1080; the touch screen supports a true multi-point touch screen, can be clicked 6000 ten thousand times, has the surface hardness of Morse 7 level and touch corners, is accurate and sensitive to touch, has quick response, does not drift or die a chip, and does not need driving. The screen playing terminal 10 is internally provided with a microcomputer, and the microcomputer selects CPU (Central processing Unit) such as Intel I3, I5 and the like; the dominant frequency is 3.2GHZ; the main board is Techniajia H61; hard disk: 500G; memory: 2g,4g or higher. Support system: windows7, windows8, windows xp, android system, apple system. The screen-play terminal 10 adopts a wall-mounted/mobile/embedded installation mode.

As shown in fig. 3, the wireless audio/video transceiver terminal 20 includes a camera 21, the camera 21 is connected with a light sensing chip 22, the light sensing chip 22 is connected with a first image processing chip 23, the first image processing chip 23 is connected with a first 2.4/5.8G radio frequency module 24 and an audio/video interface 25, and the audio/video interface 25 is connected with the screen playing terminal 10 in a wired manner. The camera 21 gathers the light rays emitted by the external scenery, the personnel taking part in the conference can shoot/record video, the light sensing chip 22 can accurately acquire the color temperature in the shooting environment during shooting, the limit that white objects are necessary in the shooting environment is eliminated, the automatic white balance adjustment of the camera 21 is realized, the external image is decomposed into hundreds of thousands of pixels and converted into an electric signal, and the electric signal is transmitted to the analog-digital converter, converted into a digital signal and transmitted to the image processing chip. The image processing chip processes mainly the digital signal, which is received by the light sensing chip 22 and further processed, such as compression encoding, etc. The processed video signal is transmitted to the screen play terminal 10 through the audio/video interface 25.

In this embodiment, the audio/video interface 25 of the wireless audio/video transceiver terminal 20 is an HDMI interface, the screen playing terminal 10 is a conference display screen, and the audio/video interface 25 is connected with the screen playing terminal 10 through an HDMI cable, so that the conference live video shot by the camera 21 is directly played from the screen playing terminal 10.

On the other hand, since the image processing chip 23 is connected to the first 2.4/5.8G rf module 24, the first 2.4/5.8G rf module 24 is a wireless transmission module, and supports 300M dual-receive dual-transmit 2.4-5.8G dual-frequency wireless wifi wireless transmission. When receiving the video signal, the computer PC 50 obtains the video image of the remote participants from the internet, encodes the video image through the speaker terminal 30, and then transmits the video image to the first 2.4/5.8G rf module 24 in a wireless manner, and the first 2.4/5.8G rf module 24 receives the audio/video signal transmitted from the speaker terminal 30, decodes the audio/video signal through the image processing chip, and then plays the audio/video signal in real time through the screen playing terminal 10. When the video signal is used for sending the video signal, the video signal compressed and encoded by the image processing chip is wirelessly transmitted through the first 2.4/5.8G radio frequency module 24, the sound box terminal 30 receives the audio and video signal sent by the first 2.4/5.8G radio frequency module 24, and after image processing, the audio and video signal is finally sent to the computer PC 50 and is sent to the far-end consultant through the computer PC 50.

As shown in fig. 4, the speaker terminal 30 is connected to a computer PC 50 through a USB cable. The sound box terminal 30 comprises a loudspeaker 31, the loudspeaker 31 is electrically connected with a power amplification chip 32, the power amplification chip 32 is electrically connected with a second audio LE-Audio2.4G module 33, the sound box terminal 30 is provided with a second 2.4/5.8G radio frequency module 34, the second 2.4/5.8G radio frequency module 34 is electrically connected with a second image processing chip 35, and the second 2.4/5.8G radio frequency module 34 is in pairing wireless connection with the first 2.4/5.8G radio frequency module 24; and the image processing chip and the second audio LE-audio2.4g module 33 are both connected to the HUB chip 36.

The speaker 31 of the speaker terminal 30 is used for playing the sound of each speaker in the conference site (live sound playing), and simultaneously playing the sound transmitted from the computer PC 50 by the remote participants (remote sound playing). More specifically, during the playing of the live sound, the second audio LE-audio2.4g module 33 is wirelessly connected to the first audio LE-audio2.4g module 43 of each wireless microphone 40, and the second audio LE-audio2.4g module 33 receives the sound uploaded from each wireless microphone 40, amplifies the sound by the power amplification chip 32, and plays the sound by the loudspeaker 31.

During remote sound playing, audio and video signals of remote participants are downloaded from the internet cloud 60 to the computer PC 50, and the computer PC 50 transmits the audio and video signals to the HUB chip 36, wherein the audio signals are played by the loudspeaker 31 after passing through the power amplifier chip 32.

In one embodiment, the power amplifier chip 32 may be, for example, an audio power amplifier chip 32 of korean NF corporation, the model number is NTP8835, and the performance specification (DSP) of NTP8835 has the functions of noise reduction, 3D surround, ASRC, etc.; from the practical application, the method has a powerful kernel DSP. The internal front stage adopts constant voltage source bias, so that the working state of the output stage can be well stabilized, a perfect protection link is arranged in the chip, and the tone is warm, soft and more audible due to extremely wide power frequency band and extremely high conversion rate. Not only the better low-frequency force and the depth of diving are reserved, but also the elasticity and the high-frequency resolution of the power amplifier are obviously improved. The sampling rate can be satisfied from 8K to 192 KHz.

The functions of the second 2.4/5.8G rf module 34 and the second image processing chip 35 of the speaker terminal 30 are basically the same as those of the first 2.4/5.8G rf module 24 and the first image processing chip 23 of the wireless audio/video transceiver terminal 20, and the first 2.4/5.8G rf module 24 and the second 2.4/5.8G rf module 34 perform wireless transmission, which is not described in detail in the application example.

The sound box terminal 30 is provided with a first key 37 and a second key 38. The first key 37 is connected to the second image processing chip 35 for activating the wireless interconnection function of the second 2.4/5.8G rf module 34 and the first 2.4/5.8G rf module 24. The second key 38 is connected to the second audio LE-audio2.4g module 33, and is used for starting the wireless interconnection function between the second audio LE-audio2.4g module 33 and the first audio LE-audio2.4g module 43 of each wireless microphone 40.

As shown in fig. 2, the plurality of wireless microphones 40 is, for example, 6, and includes a first microphone 401, a second microphone 402, a third microphone 403, a fourth microphone 404, a fifth microphone 405, and a sixth microphone 406. The 6 wireless microphones 40 and one speaker terminal 30 form a system, that is, a tuo-six microphone conference system, which is implemented by using the wireless communication technology of the LE-audio2.4g module and the multiple Time Division Multiple Access (TDMA) technology, and the 6 wireless microphones 40 are synchronously wirelessly connected with one speaker terminal 30 in real time.

As shown in fig. 5, each wireless microphone 40 has a pick-up head 41, the pick-up head 41 is electrically connected with an audio processing chip 42, the audio processing chip 42 is connected with a first audio LE-audio2.4g module 43, and each first audio LE-audio2.4g module 43 is in paired wireless connection with a second audio LE-audio2.4g module 33.

The audio processing chip 42 may be, for example, an NTP8910A digital power amplification chip 32, shipped from korea anti-fortune (NF) corporation, where NTP8910A is a single-chip full-digital audio amplifier system including a power level audio amplifier, and the integrated multifunctional digital audio signal processing system has a complete function, high performance, high fidelity, and a full-digital PWM modulator with two high-power full-bridge MOSFET power levels, and is very suitable for various intelligent audio processing systems. The audio processing chip 42 receives digital serial audio data at sampling frequencies of 32kHz,44.1kHz,48kHz and 96kHz. It provides 2 x 10 stereo mode without radiator, and can process one complete audio path from sound input, noise elimination, audio precompensation, sound effect processing to sound playback, and can greatly raise product performance. In addition, NTP8910A has a mixer and dual quad-filter that may be used to implement basic audio signal processing functions such as volume control, compensating speaker response to sound, and parametric equalization. Floating point arithmetic is supported.

Each of the first Audio LE-Audio2.4G module 43 and the second Audio LE-Audio2.4G module 33 is based on the LE Audio technology standard, the LE-Audio chip is, for example, an ATS2831 pllc3+ chip of a preferred torch-core technology, the ATS2831 pllc3+ supports a single-chip SoC, and integrates low-delay transmission link, high-quality Audio coding and decoding and noise reduction; two-transmission one-reception full-link 48K high-definition voice; the end-to-end delay target is <10ms, and the transmission distance is >200 meters; high-fidelity AI noise reduction and various noise environments are self-adaptive. Based on the function of dual transmission and single reception of LE-Audio, the utility model further expands the technology of multi-Time Division Multiple Access (TDMA), and the TDMA is used for distinguishing channels of different users by different time slots. On one frequency channel, it may be divided into a plurality of time slots. One slot is also called one physical channel. Each physical channel can only be used for traffic transmission by one user at the same time.

TDMA technology has the following characteristics:

(1) Multiple channels per carrier frequency. TDMA systems form a frequency-time matrix that generates multiple time slots on each frequency, each point in the matrix being a channel that can provide telephone or non-telephone service to any mobile subscriber under the control of a base station.

(2) Transmission using a burst sequence. The transmission of the mobile station signal power is discontinuous, with the pulse train being transmitted only in specified time slots.

(3) The transmission rate is high, and the self-adaption is balanced. Each carrier frequency has more time slots, so that the frequency interval is wide and the transmission rate is high.

(4) Since TDMA is divided into time slot transmissions, the receiver regains synchronization on each burst sequence.

Based on the combination of LE-Audio and multiple Time Division Multiple Access (TDMA) technology, the 6 wireless microphones 40 and one wireless Audio/video transceiver terminal 20 can realize wireless communication at the same time, namely one-to-six.

Each wireless microphone 40 is provided with a microphone key 44, and the microphone key 44 is connected to the first audio LE-audio2.4g module 43, for starting the code matching interconnection function of the first audio LE-audio2.4g module 43 and the second audio LE-audio2.4g module 33.

The wireless microphone 40 is an omni-directional microphone. The omnidirectional microphone is a portable conference telephone product, and can not only carry out high-quality network conference call on the Internet through the interface of a computer; but also can carry out high-quality wireless mobile telephone conferences by using the earphone interface as a hands-free calling device of a loudspeaker and a microphone of the wireless mobile telephone. In this embodiment, all the omnidirectional microphones are wirelessly connected with one sound box terminal 30, so as to form a large conference system with multiple people participating.

The wireless microphone 40 is provided with a rechargeable battery 45. The rechargeable battery 45 is connected with the charging chip 46, the charging chip 46 is connected with the Type-C interface 47, and the Type-C interface 47 is connected with the 5V power adapter 48 in a pluggable mode. When the battery is powered, the wireless microphone 40 is directly placed on a conference table for use, and when the electric quantity is insufficient, the wireless microphone 40 is charged through the 5V power adapter 48.

In summary, the present utility model is designed to focus on displaying images of a conference site and PPT lectures in a video manner through the screen playback terminal 10; the wireless audio/video receiving and transmitting terminal 20 is provided with a camera 21 to record the scene of the meeting place and transmit the scene to the screen playing terminal 10; meanwhile, the wireless audio/video transceiver terminal 20 has a wireless transceiver function, and can wirelessly receive video signals sent by the sound box terminal 30 and then transmit the video signals to the screen playing terminal 10 for playing, in general, the sound box terminal 30 can be connected with a computer PC 50, and the computer PC 50 is provided with video conference software, so that audio/video of a far-end consultant can be transmitted to the local. The sound box terminal 30 can also simultaneously pick up the sound of the participants with a plurality of wireless microphones 40 in all directions by the wireless microphones 40, and on one hand, the sound is directly played by the sound box terminal 30, and on the other hand, the sound is transmitted to the cloud 60 through the computer PC 50.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.

Claims (8)

1. A wireless intelligent audio/video conference terminal with an operating system is characterized in that: comprising

A screen play terminal (10),

the wireless audio/video receiving and transmitting terminal (20), the wireless audio/video receiving and transmitting terminal (20) comprises a camera (21), the camera (21) is connected with a light sense chip (22), the light sense chip (22) is connected with a first image processing chip (23), the first image processing chip (23) is respectively connected with a first 2.4/5.8G radio frequency module (24) and an audio/video interface (25), and the audio/video interface (25) is connected with the screen playing terminal (10) in a wired manner;

the loudspeaker box terminal (30), the loudspeaker box terminal (30) comprises a loudspeaker (31), the loudspeaker (31) is electrically connected with a power amplification chip (32), the power amplification chip (32) is electrically connected with a second audio LE-Audio2.4G module (33), the loudspeaker box terminal (30) is provided with a second 2.4/5.8G radio frequency module (34), the second 2.4/5.8G radio frequency module (34) is electrically connected with a second image processing chip (35), and the second 2.4/5.8G radio frequency module (34) is in pairing wireless connection with the first 2.4/5.8G radio frequency module (24); the second image processing chip (35) and the second audio LE-Audio2.4G module (33) are connected to the HUB chip (36);

the wireless microphone comprises a plurality of wireless microphones (40), each wireless microphone (40) is provided with a pickup head (41), the pickup heads (41) are electrically connected with an audio processing chip (42), the audio processing chip (42) is connected with a first audio LE-Audio2.4G module (43), and each first audio LE-Audio2.4G module (43) is in pairing wireless connection with a second audio LE-Audio2.4G module (33).

2. A wireless intelligent audio video conference terminal with an operating system according to claim 1, wherein: the sound box terminal (30) is connected with a computer PC (50) through a USB cable.

3. A wireless intelligent audio video conference terminal with an operating system according to claim 1, wherein: the audio/video interface (25) of the wireless audio/video receiving and transmitting terminal (20) is an HDMI interface, the screen playing terminal (10) is a conference display screen, and the audio/video interface (25) is connected with the screen playing terminal (10) through an HDMI cable.

4. A wireless intelligent audio video conference terminal with an operating system according to claim 1, wherein: a first key (37) and a second key (38) are arranged on the loudspeaker box terminal (30).

5. A wireless intelligent audio video conference terminal with an operating system according to claim 1, wherein: a microphone button (44) is provided on each wireless microphone (40).

6. A wireless intelligent audio video conference terminal with an operating system according to claim 1, wherein: the wireless microphone (40) is an omni-directional microphone.

7. A wireless intelligent audio video conference terminal with an operating system according to claim 1, wherein: the wireless microphone (40) is provided with a rechargeable battery (45).

8. A wireless intelligent audio video conferencing terminal with an operating system as claimed in claim 7 wherein: the rechargeable battery (45) is connected with the charging chip (46), the charging chip (46) is connected with the Type-C interface (47), and the Type-C interface (47) is connected with the 5V power adapter (48) in a pluggable mode.