阅读说明：本技术 一种集成式的音视频装置 (Integrated audio and video device ) 是由 陈文明 张世明 吕周谨 倪世坤 邓高锋 于 2020-12-11 设计创作，主要内容包括：本发明提出了一种集成式的音视频装置,包括：视频模块,用于采集图像信息,并将图像信息发送至主控模块；麦克风模块,用于采集音频信息,并将音频信息发送至主控模块；播放模块,用于接收来自主控模块的音频数字信号,将其处理为声音并输出到外界；主控模块,用于接收视频模块和麦克风模块采集的图像信息和音频信息,进行分析处理并生成音视频信号,同时将音视频信号输出至外部设备；还用于接收外部设备的音频数字信号,将音频数字信号发送至播放模块；主控模块与外部设备通过USB实现通讯连接；通过将视频模块、麦克风模块以及播放模块均集成于主控主模块上,由主控模块统一收发信息,实现了整体设备可以更好的同步以及减少电流功耗的效果。(The invention provides an integrated audio and video device, comprising: the video module is used for collecting image information and sending the image information to the main control module; the microphone module is used for acquiring audio information and sending the audio information to the main control module; the playing module is used for receiving the audio digital signals from the main control module, processing the audio digital signals into sound and outputting the sound to the outside; the main control module is used for receiving the image information and the audio information collected by the video module and the microphone module, analyzing and processing the image information and the audio information to generate audio and video signals, and outputting the audio and video signals to external equipment; the audio digital signal processing module is also used for receiving the audio digital signal of the external equipment and sending the audio digital signal to the playing module; the main control module is in communication connection with external equipment through a USB; the video module, the microphone module and the playing module are integrated on the main control main module, and the main control module receives and sends information in a unified mode, so that the effects that the whole equipment can be better synchronized and the current power consumption is reduced are achieved.)

1. An integrated audio-video apparatus, comprising:

the video module is used for collecting image information and sending the image information to the main control module;

the microphone module is used for acquiring audio information and sending the audio information to the main control module;

the playing module is used for receiving the audio digital signals from the main control module, processing the audio digital signals into sound and outputting the sound to the outside;

the main control module is used for receiving the image information and the audio information collected by the video module and the microphone module, analyzing and processing the image information and the audio information to generate audio and video signals, and outputting the audio and video signals to external equipment; the audio digital signal of the external equipment is received, and the audio digital signal is sent to the playing module;

the output ends of the video module and the microphone module are electrically connected with the input end of the main control module, the output end of the main control module is electrically connected with the input end of the playing module, and the main control module is in communication connection with external equipment through a USB.

2. An integrated audio-visual apparatus as claimed in claim 1, wherein: the video module comprises a video chip and a camera;

the camera is electrically connected with the video chip, and the video chip is electrically connected with the main control module;

the camera is used for collecting images in the environment and transmitting the images to the video chip, and the video chip processes the images to generate image information and sends the image information to the main control module after receiving the images.

3. An integrated audio-visual apparatus as claimed in claim 1, wherein: the playing module comprises a power amplifier circuit and a loudspeaker;

the input end of the power amplifier circuit is electrically connected with the main control module, and the output end of the power amplifier circuit is electrically connected with the loudspeaker;

the power amplifier circuit is used for receiving the audio digital signals of the main control module, the audio digital signals of the power amplifier circuit are amplified to generate amplified signals, the amplified signals are transmitted to the loudspeaker by the power amplifier circuit, and the loudspeaker outputs audio after receiving the amplified signals.

4. An integrated audio-visual apparatus as claimed in claim 1, wherein: after receiving the image information of the video module, the main control module firstly carries out image quality processing on the image information, then carries out coding compression to convert the image information into a USB signal, and finally sends the USB signal to external equipment through the USB.

5. An integrated audio-visual apparatus as claimed in claim 1, wherein: the main control module receives the audio information of the microphone module, the audio signals comprise environmental audio and speaking audio, the main control module firstly performs echo elimination processing on the audio signals to eliminate the environmental audio, then performs noise reduction processing on the audio signals, and finally sends the audio signals to external equipment through a USB.

6. An integrated audio-visual apparatus as claimed in claim 3, wherein: the power amplifier circuit comprises a power amplifier chip, the power amplifier chip is electrically connected with the main control module, the power amplifier chip receives the audio digital signals and then performs equalization processing, and the audio digital signals are amplified or attenuated in some audio amplitudes and then sent to the loudspeaker, and the loudspeaker sends out sound.

7. An integrated audio-visual apparatus as claimed in claim 1, wherein: the main control module receives the image information and the audio information collected by the video module and the microphone module, and synchronously outputs the image information and the audio information.

8. An integrated audio-visual apparatus as claimed in claim 1, wherein: the power amplifier module includes power amplifier chip, and power amplifier chip's VOP, VON pin all concatenate the inductance after be connected to same joint on, the inductance with ground connection behind the parallelly connected two electric capacity between the joint.

9. An integrated audio-visual apparatus as claimed in claim 8, wherein: and a CN1 pin of the power amplifier chip is electrically connected with a CP1 pin of the power amplifier chip after being connected with a first capacitor in series, and a CN2 pin of the power amplifier chip is electrically connected with a CP2 pin of the power amplifier chip after being connected with a second capacitor in series.

10. An integrated audio-visual apparatus as claimed in claim 8, wherein: the CVDD pin of the power amplifier chip is electrically connected with the AVDD pin of the power amplifier chip, the two capacitors are connected in parallel and then connected in series between the CVDD pin and the AVDD pin, and the AVDD pin of the power amplifier chip is connected in series with the third capacitor and then grounded.

Technical Field

The invention relates to the field of audio and video communication products, in particular to an integrated audio and video device.

Background

In the field of conference audio and video communication products, the product form has no great breakthrough progress for more than ten years; the traditional audio and video conference system needs a plurality of devices to be combined for use, and needs a plurality of devices such as camera equipment, microphone equipment, a communication system, an exchanger and the like to be combined for use; the traditional audio and video conference system has the defects of various and expensive equipment, heavy form, troublesome connection and complex operation, can be usually used only in a fixed conference room, and often needs professional personnel to operate and maintain; with the rapid development of science and technology, conference system equipment is also developed towards the direction of portability and simple operation, so that various portable equipment suitable for audio and video communication is created.

In the prior art, the portable audio and video conference equipment is mainly implemented in the following 3 ways: firstly, a PC notebook camera and a microphone and loudspeaker are combined for use; secondly, portable single sound box equipment with a microphone and a loudspeaker and camera equipment are combined for use; and thirdly, using a portable microphone, a loudspeaker and a camera.

The prior art has the following problems that the mode is limited by the sound pickup distance of a microphone and the definition and angle of a video, a camera carried by a PC computer is not clear and has a small angle, the pickup distance of the microphone is short, the sound reproduction sound of a loudspeaker is small, the microphone can be used by a single person in a short distance, and the microphone is not suitable for a working meeting of more than 3 persons; although the mode of type II is portable, the definition of a camera is enough, but the sound pickup of a microphone is not enough, but audio equipment and video equipment are required to be used in combination, so that the complexity of line connection and product connection is increased; moreover, the two products are not always of the same manufacturer or the same scheme, and the problem of audio and video asynchronism easily occurs in the process of audio and video passing; in the mode of type III, an audio chip with a USB function and a video chip with another USB function are arranged in the product at the same time, and then the audio chip and the video chip are converted into a USB port through a USB switching chip to be output; this approach is in fact even the derivative of approach 2; putting the scheme of the two types of equipment into one piece of equipment; in this way, the current of the two equipment schemes is larger, and the problem of audio and video asynchronism also exists because the chips of the schemes are different.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide an integrated audio and video device, wherein a video module, a microphone module and a playing module are integrated on a main control main module, and the main control module receives and sends information in a unified manner, so that the effects of better synchronization and current power consumption reduction of the whole equipment are achieved.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides an integrated audio and video device, comprising: the video module is used for collecting image information and sending the image information to the main control module; the microphone module is used for acquiring audio information and sending the audio information to the main control module; the playing module is used for receiving the audio digital signals from the main control module, processing the audio digital signals into sound and outputting the sound to the outside; the main control module is used for receiving the image information and the audio information collected by the video module and the microphone module, analyzing and processing the image information and the audio information to generate audio and video signals, and outputting the audio and video signals to external equipment; the audio digital signal processing module is also used for receiving the audio digital signal of the external equipment and sending the audio digital signal to the playing module; the output ends of the video module and the microphone module are electrically connected with the input end of the main control module, the output end of the main control module is electrically connected with the input end of the playing module, and the main control module is in communication connection with external equipment through a USB.

Preferably, the video module comprises a video chip and a camera; the camera is electrically connected with the video chip, and the video chip is electrically connected with the main control module; the camera is used for collecting images in the environment and transmitting the images to the video chip, and the video chip processes the images to generate image information and sends the image information to the main control module after receiving the images.

Preferably, the playing module comprises a power amplifier circuit and a loudspeaker; the input end of the power amplifier circuit is electrically connected with the main control module, and the output end of the power amplifier circuit is electrically connected with the loudspeaker; the power amplifier circuit is used for receiving the audio digital signals of the main control module, the audio digital signals of the power amplifier circuit are amplified to generate amplified signals, the amplified signals are transmitted to the loudspeaker by the power amplifier circuit, and the loudspeaker outputs audio after receiving the amplified signals.

Preferably, after receiving the image information of the video module, the main control module performs image quality processing on the image information, performs coding compression on the image information to convert the image information into a USB signal, and finally sends the USB signal to the external device through the USB.

Preferably, after the main control module receives the audio information of the microphone module, the audio signal includes an environmental audio and a speaking audio, the main control module firstly performs echo cancellation processing on the audio signal to eliminate the environmental audio, then performs noise reduction processing on the audio signal, and finally transmits the audio signal to the external device through the USB.

Preferably, the power amplifier circuit includes a power amplifier chip, the power amplifier chip is electrically connected with the main control module, the power amplifier chip receives the audio digital signals and then performs equalization processing, some audio amplitudes of the audio digital signals are enhanced or attenuated and then transmitted to the loudspeaker, and the loudspeaker emits sound.

Preferably, the main control module receives the image information and the audio information collected by the video module and the microphone module, and synchronously outputs the image information and the audio information.

Preferably, the main control module comprises a main control chip, the output ends of the video module and the microphone module are electrically connected with the input end of the main control chip, and the output end of the main control chip is electrically connected with the input end of the playing module. Specifically, the main control chip is provided with interfaces such as MIPI, MIC, CODEC and the like.

Preferably, the power amplifier module comprises a power amplifier chip, pins VOP and VON of the power amplifier chip are connected with the inductor in series and then connected to the same connector, and the inductor and the connector are grounded after being connected with two capacitors in parallel.

Preferably, a CN1 pin of the power amplifier chip is electrically connected to a CP1 pin of the power amplifier chip after being connected in series with the first capacitor, and a CN2 pin of the power amplifier chip is electrically connected to a CP2 pin of the power amplifier chip after being connected in series with the second capacitor.

Preferably, the CVDD pin of the power amplifier chip is electrically connected with the AVDD pin of the power amplifier chip, the two capacitors are connected in parallel and then connected in series between the CVDD pin and the AVDD pin, and the AVDD pin of the power amplifier chip is connected in series with the third capacitor and then grounded.

Preferably, the video module is electrically connected with the main control chip through an MIPI interface, and data are transmitted to the main control chip through an MIPI structure.

Preferably, the microphone module is electrically connected with the main control chip through an MIC interface. Preferably, the microphone module is a microphone matrix.

Preferably, the video chip is a Sensor chip.

Preferably, the video chip transmits data to the main control module through the MIPI interface.

The invention has the beneficial effects that:

according to the integrated audio and video device provided by the invention, the video module, the microphone module and the playing module are integrated on the main control main module, and the main control module receives and sends information in a unified manner, so that the problems of heavy equipment, complex operation, difficult maintenance, high cost and the like of the traditional audio and video conference system are solved, the problems of computer connection and unsynchronized audio, video and video of a novel single camera product and a microphone and loudspeaker combined use product can be solved, and the main control module is in communication connection with external equipment through a USB (universal serial bus), so that audio and video conversation can be realized only by connecting 1 USB (universal serial bus) wire to a computer, the power consumption of the product is reduced, the operation convenience of the product is improved, the effect that the whole equipment can be better synchronized and the current power consumption is reduced is realized, and the experience effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic block diagram provided in a specific embodiment of the present invention;

fig. 2 is a schematic diagram of a main control chip according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a video chip according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a microphone module according to an embodiment of the invention;

fig. 5 is a schematic diagram of a power amplifier circuit according to an embodiment of the present invention.

The attached drawings are as follows: 1, a main control module; 2, a video module; 3 a microphone module; 4, a playing module; 5 external devices.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 5, the integrated audio/video apparatus provided in this embodiment includes: the video module 2 is used for collecting image information and sending the image information to the main control module 1; the microphone module 3 is used for collecting audio information and sending the audio information to the main control module 1; the playing module 4 is used for receiving the audio digital signals from the main control module 1, processing the audio digital signals into sound and outputting the sound to the outside; the main control module 1 is used for receiving the image information and the audio information collected by the video module 2 and the microphone module 3, analyzing and processing the image information and the audio information to generate audio and video signals, and outputting the audio and video signals to the external equipment 5; the audio module is also used for receiving the audio digital signal of the external device 5 and sending the audio digital signal to the playing module 4; the output ends of the video module 2 and the microphone module 3 are electrically connected with the input end of the main control module 1, the output end of the main control module 1 is electrically connected with the input end of the playing module 4, and the main control module 1 is in communication connection with the external equipment 5 through a USB. Specifically, the main control module 1 comprises a main control chip, the main control chip is electrically connected with the video module 2, the microphone module 3 and the playing module 4, the main control chip is also in communication connection with an external device 5 through a USB, wherein the external device 5 can be a computer, an intelligent box, a panel, an intelligent television and other devices; because the audio and video processing is on the main control chip, only one USB device is connected to an external computer finally, and the whole data interaction is carried out by one main control module 1 circuit, the complexity of product design is simplified firstly, the whole working current of the product is reduced for the circuit formed by a plurality of control chips, and the problem of video and audio synchronization can be processed more conveniently because the control of one main control chip is realized by the clock timing of the main control module 1 of the same reference clock main control module 1.

Preferably, the video module 2 comprises a video chip and a camera; the camera is electrically connected with the video chip, and the video chip is electrically connected with the main control module 1; the camera is used for collecting images in the environment and transmitting the images to the video chip, and the video chip processes the images to generate image information and sends the image information to the main control module 1 after receiving the images.

Preferably, after receiving the image information of the video module 2, the main control module 1 performs image quality processing on the image information, performs encoding compression on the image information to convert the image information into a USB signal, and finally sends the USB signal to the external device 5 through the USB.

Preferably, the main control module comprises a main control chip, the output ends of the video module and the microphone module are electrically connected with the input end of the main control chip, and the output end of the main control chip is electrically connected with the input end of the playing module.

Preferably, the video module is electrically connected with the main control chip through an MIPI interface, and data are transmitted to the main control chip through an MIPI structure.

Preferably, the microphone module is electrically connected with the main control chip through an MIC interface. Preferably, the microphone module is a microphone matrix.

Preferably, the video chip is a Sensor chip. Specifically, the video chip is a Sensor chip, and a camera and the Sensor chip with proper resolution and angle can be selected according to requirements.

Preferably, the video chip transmits data to the main control module 1 through the MIPI interface. Specifically, video module 2 comprises Sensor chip and camera, can select the camera and the Sensor chip of suitable resolution ratio and angle as required, this module is mainly used for video receipt and signal conversion, the scene of shooing enters into the Sensor chip from the camera, after the light signal conversion that will receive in the Sensor chip is the signal of telecommunication, interface transmission such as MIPI is handled to main control chip again, main control chip carries out image quality processing to video signal includes, definition, saturation, white balance, brightness processing, contrast, distortion correction etc. relevant processing, carry out coding compression and signal conversion again and USB signal after that, send to the computer through USB at last.

Preferably, the playing module 4 comprises a power amplifier circuit and a loudspeaker; the input end of the power amplifier circuit is electrically connected with the main control module 1, and the output end of the power amplifier circuit is electrically connected with the loudspeaker; the power amplifier circuit is used for receiving the audio digital signals of the main control module 1, the audio digital signals of the power amplifier circuit are amplified to generate amplified signals, the amplified signals are transmitted to the loudspeaker by the power amplifier circuit, and the loudspeaker outputs audio after receiving the amplified signals. Specifically, the power amplifier circuit includes power amplifier chip, and power amplifier chip is connected with main control module 1 electricity, and the main control module 1 carries out the communication and is mutual, and power amplifier chip carries out amplification to main control module 1's audio digital signal.

Preferably, the power amplifier circuit includes a power amplifier chip, the power amplifier chip is electrically connected with the main control module 1, the power amplifier chip receives the audio digital signal and then performs equalization processing, some audio amplitudes of the audio digital signal are enhanced or attenuated and then transmitted to the loudspeaker, and the loudspeaker emits sound. Specifically, the playing module 4 is mainly used for outputting the voice of the 3 rd party in the audio and video call process, when the audio and video call is performed, the voice of the other party is processed by the main control chip and then output to the power amplifier chip, then the small signal is amplified by the power amplifier chip and then transmitted to the loudspeaker, and finally the loudspeaker outputs the voice; after the audio signals reach the power amplifier core through the USB, the main control chip performs equalization processing, namely the audio amplitudes of some frequency bands in the audio digital signals are enhanced, the audio amplitudes of other frequency bands are attenuated and then transmitted to the loudspeaker, and the loudspeaker emits sounds.

Preferably, the power amplifier module comprises a power amplifier chip, pins VOP and VON of the power amplifier chip are connected with the inductor in series and then connected to the same connector, and the inductor and the connector are grounded after being connected with two capacitors in parallel. Specifically, the connector is used for being electrically connected with a loudspeaker, and VOP pins and VON pins which are used as power amplifier chips are used as output pins, and output signals are sent to the loudspeaker through the connector to be played.

Preferably, a CN1 pin of the power amplifier chip is electrically connected to a CP1 pin of the power amplifier chip after being connected in series with the first capacitor, and a CN2 pin of the power amplifier chip is electrically connected to a CP2 pin of the power amplifier chip after being connected in series with the second capacitor.

Preferably, the CVDD pin of the power amplifier chip is electrically connected with the AVDD pin of the power amplifier chip, the two capacitors are connected in parallel and then connected in series between the CVDD pin and the AVDD pin, and the AVDD pin of the power amplifier chip is connected in series with the third capacitor and then grounded. Specifically, one end of two capacitors connected in series between the CVDD and AVDD pins is further connected with a 5V input voltage through a circuit.

An INP pin of the power amplifier chip is connected with an inductor and a capacitor in series and then is grounded; the INN hardware of the power amplifier chip is connected with an inductor and a capacitor in series and then is used as an output interface HPOUT; the PVDD pin of the power amplifier chip is electrically connected with the power supply PVDD and is grounded after being connected with the capacitor in series.

Preferably, after the main control module 1 receives the audio information of the microphone module 3, the audio signal includes an environmental audio and a speaking audio, the main control module 1 first performs echo cancellation processing on the audio signal to eliminate the environmental audio, then performs noise reduction processing on the audio signal, and finally sends the audio signal to the external device 5 through the USB.

Preferably, the main control module 1 receives the image information and the audio information collected by the video module 2 and the microphone module 3, and synchronously outputs the image information and the audio information.

Preferably, the microphone module 3 is a microphone matrix. Specifically, the microphone array is a multi-microphone product, and can be a plurality of microphones such as 4 microphones and 6 microphones, and the multi-microphone design can achieve the effect of sound pickup at a distance of 3-5 m, so that the problem of short sound pickup distance is solved, and the problem that a plurality of people can only hear the sound by speaking to the microphones in a crowded manner is avoided, for example, when the 4-microphone array is adopted, the microphones adopt omnidirectional PDM microphones, so that the anti-interference capability of the microphones is greatly improved, and sound signals are converted into electric signals after being received by the 4 microphones and then transmitted to a main control chip in a PDM format for processing; the voice of speaking of own party in the video call process is transmitted to the main control chip by the microphone array, after NS, AEC and the like are processed in the main control chip, unnecessary environmental noise and the like are eliminated, the other party can hear local speaking voice more clearly, wherein the voice picked up by the microphone array comprises two parts, one part is the voice of the other party sent by a loudspeaker in the conference, the other part is the voice sent by the person speaking at the equipment end in the conference, at the moment, the voice processing module needs to make echo elimination algorithm for the voice of the two parts, namely, the voice of the other party is eliminated, and then the voice is transmitted to a computer through a USB line.

When the conference sound processing device is used specifically, in a conference, a camera transmits current scenes to a main control chip through a video chip, meanwhile, sound in the conference is picked up by a microphone array and then transmitted to the main control chip, after video and audio processing is simultaneously carried out in the main control chip, USB signals are converted into USB signals and transmitted to a computer, the sound computer of the other party in the conference is transmitted to the main control chip through a USB cable, the main control chip is transmitted to a power amplifier, and finally the sound of the other party is played through a loudspeaker.

According to the integrated audio and video device provided by the invention, the video module 2, the microphone module 3 and the playing module 4 are integrated on the main control main module, and the main control module 1 receives and sends information in a unified manner, so that the problems of heavy equipment, complex operation, difficult maintenance, high cost and the like of the traditional audio and video conference system are solved, the problems of computer connection and audio and video asynchronism of a novel single camera product and a microphone and loudspeaker combined use product are solved, and the main control module 1 is in communication connection with the external equipment 5 through a USB (universal serial bus), so that audio and video conversation can be realized by connecting 1 USB (universal serial bus) wire to a computer, the power consumption of the product is reduced, the operation convenience of the product is improved, the effects of better synchronization and reduction of current power consumption of the whole equipment are realized, and the experience effect of a.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.