TWM605794U - Video live broadcast system and its video and audio transmission workstation - Google Patents

Abstract

A live video system includes a photographing device, an audio-visual transmission workstation and a mobile device. The image captured by the photographing device is sent to the audiovisual transmission workstation. The compressed video and audio data is transmitted to the mobile device, and the mobile device transmits the compressed video and audio data to a network platform through an application program. The audio-visual transmission workstation includes a processing module and a wireless transmission module. The processing module includes: at least one audio-visual data receiving unit and an audio-visual processing module. The audio-visual data receiving unit receives the audio-visual data captured from a photographing device. The audio-visual processing module compresses or converts the received audio-visual data to generate a compressed audio-visual data. The wireless transmission module transmits the compressed video and audio data to a mobile device via a network.

Description

Video live broadcast system and its video and audio transmission workstation

This creation department relates to a technical field of live video broadcasting, especially a live video broadcasting system and its audio-visual transmission workstation.

Live video broadcasting is the current way to transmit video in real time using the Internet, and has been widely used in various types of network video projects such as video conferences, video programs, or personal short films. The existing video live broadcast system uses a camera device to capture live images, and then connects to a mobile device with a cable via a video capture box or a computer host, such as a portable computer with video software installed in the portable device. The captured image is sent to another remote mobile device by the video software via the network, and played on the remote mobile device. In the above-mentioned live video broadcasting system, since the camera device and the mobile device are connected by a cable, the movement of the camera is restricted.

Another existing live video broadcast system is to wirelessly transmit video images to mobile devices via routers, and install virtual universal serial bus audio-visual level software in the mobile devices, and the images captured by the cameras are converted by the above software After using the serial bus to transmit audio-visual-level signals, the video is sent to remote mobile devices via video software. However, this kind of existing video live broadcast system must be installed in advance on every mobile device connected to the router. It is very inconvenient for the live video system to run with serial bus audio-visual level software.

In view of this, the purpose of this creation is to provide an audio-visual transmission workstation, which directly built-in virtual universal serial bus audio-visual-level software, the image captured by the camera device is first converted into the image signal in the audio-visual transmission workstation , And then use wireless transmission to mobile devices, so each mobile device only needs to connect to the audio-visual transmission workstation to make the live video system run normally. It is not necessary to install a virtual universal serial bus audio-visual level software in each mobile device .

An embodiment of the created audio-visual transmission workstation includes a processing module and a wireless transmission module. The processing module includes: at least one audio-visual data receiving unit and an audio-visual processing module. The audio-visual data receiving unit receives audio-visual data captured from a photographing device. The audio-visual processing module compresses or converts the received audio-visual data to generate a compressed audio-visual data. The wireless transmission module transmits the compressed video and audio data to a mobile device via a network.

In another embodiment, the processing module and the wireless transmission module are integrated to form a system-on-a-chip.

In another embodiment, the created audio-visual transmission workstation further includes a power module electrically connected to the processing module, and the power module provides power to the processing module and the wireless transmission module.

In another embodiment, the photographing device is a high-definition multimedia interface photographing device.

In another embodiment, the processing module further includes a universal serial bus audio-visual level simulation unit, which converts the compressed audio-visual data into an analog audio-visual data, and the analog audio-visual data is simulated into a universal serial bus audio-visual capture device. The acquired audio-visual data, the analog audio-visual data is compressed by the audio-visual processing module to generate the compressed audio-visual data.

In another embodiment, the photography device is a USB Video Class (UVC) photography device.

In another embodiment, the audio-visual processing module includes an H.264 video encoding engine.

This creation provides a live video system, which includes a camera device (which can be an HDMI camera or a USB web camera), a video and audio transmission workstation, and a mobile device. The image captured by the camera device is sent to the audio-visual transmission workstation; a mobile device, the compressed audio-visual data is sent to the mobile device, and the mobile device transmits the compressed audio-visual data to a network platform through an application.

In another embodiment, the live video broadcast system of the present creation further includes a receiver, which is pluggably installed in the mobile device, and the receiver has a wireless receiving module, and the compressed audio-visual data is received by the wireless receiving module. To send to the mobile device.

In another embodiment, the audio-visual transmission workstation has a first smart pairing button, and the receiver has a second intelligent pairing button. The first smart pairing button and the second smart pairing button generate a pairing signal to make the audio-visual transmission workstation communicate with the receiver. Fast communication pairing, and easy to use for users.

The video and audio transmission workstation created by this creation directly sets the software of the virtual universal serial bus image level. The video images captured by the camera device can be converted into universal serial bus images in real time at the video and audio transmission workstation. It is sent to the mobile device wirelessly, so that the mobile device connected to the audio-visual transmission station does not need to install the image conversion software.

In order to make the purpose, technical features and advantages of this creation better understood by those in the relevant technical field and be able to implement this creation, hereby, in conjunction with the attached drawings, the technical features and implementation methods of this creation are specifically explained and listed. The preferred embodiment progress description.

In addition, the drawings referred to in the following text are to express the schematics related to the characteristics of this creation, and are not required to be drawn completely based on the actual situation, and are described first.

Secondly, the "one", "one" and "the" used in this article include both the singular form and the plural form, unless the context clearly indicates otherwise.

Furthermore, the terms "including" and/or "including" used in this specification refer to the presence of the described features, elements and/or units. It should be understood that none of these terms exclude the presence or addition of one or The meaning of multiple other features, elements and/or units.

Please refer to FIG. 1 and FIG. 2, which show an embodiment of the live video broadcast system created by the present invention. As shown in FIG. 1, the live video broadcasting system 100 of the present creation includes a photographing device 10, an audio-visual transmission workstation 20, a receiver 30 and a mobile device 40. The photographing device 10 photographs a live image, and transmits the photographed image to the audio-visual transmission workstation 20. The image data can be transmitted between the photographing device 10 and the audio-visual transmission workstation 20 by a cable connection, or can be transmitted by a wireless connection. In this embodiment, the photographing device 10 may be a digital camera, which is connected to the audiovisual transmission workstation 20 through a high-definition multimedia interface (HDMI). The photographing device 10 may also be a universal serial bus video class webcam (USB Video Class Webcam, UVC Webcam), which is connected to the video and audio transmission workstation 20 through a universal serial bus (USB) interface.

After receiving the image data of the camera device, the audio-visual transmission workstation 20 compresses the image data, and transmits the compressed image data to the mobile device 40 by wireless transmission. For example, the audio-visual transmission workstation 20 and the mobile device 40 use Wifi. Communication technology transmits audio-visual data. In another embodiment, the receiver 30 is hot-pluggable and connects to the mobile device 40. After the compressed video and audio data from the video and audio transmission workstation 20 is received by the receiver 30, the receiver 30 transmits the compressed video and audio data to the mobile device. 40. The mobile device 40 is installed with various communication applications or video conferencing applications. The mobile device 40 is connected to other remote mobile devices L or audio-visual playback devices P via the network N, and sent to the remote mobile device L or audio-visual playback devices The video and audio data of P plays video and audio on the remote mobile device L or video playback device P.

As shown in FIG. 2, the created audio-visual transmission workstation 20 includes a processing module 21 and a wireless transmission module 22. The processing module 21 includes an audio-visual data receiving unit 211, an audio-visual processing unit 212, and a universal serial bus audio-visual level simulation unit 213. The audio-visual data receiving unit 211 receives the audio-visual data captured by the photographing device 10. The audio-visual data receiving unit 211 may include multiple interfaces of different interfaces, such as high-definition multimedia interface (HDMI) and universal serial bus interface (USB) or universal Serial bus image level (UVC) interface. The image data captured by the photographing device 10 is transmitted to the audio-visual data receiving unit 211 through various interfaces via cables.

The audio-visual data receiving unit 211 sends the received audio-visual data to the audio-visual processing unit 212, and the audio-visual processing unit 212 compresses the audio-visual data sent by the audio-visual data receiving unit 211. For example, the H.264 video encoding engine compresses the audio-visual data into Mpeg4. Format. The compressed audio-visual data is transmitted to the mobile device 40 via the wireless transmission module 22 in a wireless transmission manner.

If the photographing device 10 is a universal serial bus video and audio level photography device, such as a universal serial bus image level webcam (USB Video Class Webcam, UVC Webcam), the video and audio data receiving unit 211 directly transmits the video and audio data to the video and audio processing unit 212 performs processing, such as compression or video coding conversion, and then transmits to the mobile device 40 via the wireless transmission module 22. If the camera device 10 is a high-definition multimedia interface camera device, the audio-visual data captured by the camera device 10 is received by the audio-visual data receiving unit 211 and then sent to the universal serial bus audio-visual level analog unit 213 to convert the audio-visual signals into universal The audio-visual data of the serial bus is then sent to the audio-visual processing unit 212 for processing, such as compression or video coding conversion. The compressed audio-visual data is sent to the mobile device 40 via the wireless transmission module 22.

The mobile device 40 includes a processing unit 41, a display unit 42 and a communication unit 43. The mobile device 40 may be a portable notebook computer, tablet computer or smart phone. The receiver 30 is connected to the mobile device 40 in a hot-pluggable manner. For example, the receiver 30 may be a universal serial bus interface (USB) module, and the receiver 30 can be inserted into the USB interface of the mobile device 40 when needed. The receiver 30 has a wireless receiving module 31. The wireless receiving module 31 receives the data transmitted from the audio-visual transmission workstation 20, and transmits the received audio-visual data to the processing unit 41 of the mobile device 40. The processing unit 41 transfers the compressed audio-visual data The data is displayed on the display unit 42 after decompression. The display unit 42 may be a liquid crystal display screen. The processing unit 41 executes communication or video applications at the same time, and the audio-visual data sent by the receiver 30 is sent to the network platform through the communication or video application through the communication unit 43, and is connected to the remote mobile device of the network platform L or the audiovisual playback device P can synchronously play the received audiovisual data on its display unit.

In addition, the mobile device L may be a portable notebook computer, a tablet computer or a smart phone, and the audio-visual playback device P may be a device such as a TV or a desktop computer connected to the Internet.

As shown in Figure 1, it is an embodiment of a live teaching course. The photographing device 10 shoots the teaching site, the teacher writes the teaching content on the whiteboard, and the image of the teaching site is transmitted to the mobile device 40 through the audio-visual transmission workstation 20, and then transmitted from the mobile device 40 to the network platform, and is transmitted by each remote mobile device L And the audio-visual playback device P, and the students can watch the teaching content through the mobile device L and the audio-visual playback device P.

Please refer to Figure 3, which shows a schematic diagram of data transmission between the created audio-visual transmission workstation and the hot-pluggable receiver and mobile device. As mentioned above, the receiver 30 can be a modular design and have a universal serial bus interface. The receiver 30 is plugged into the corresponding interface of the mobile device 40 and is electrically connected to the mobile device 40. The audio-visual data of the audio-visual transmission workstation 20 is transmitted to the receiver 30 via wireless transmission, which may be a communication technology such as Wi-Fi or Bluetooth as described above. A first smart pairing button B1 and a second smart pairing button B2 for pairing are respectively provided on the audio-visual transmission workstation 20 and the receiver 30. After the user presses the first smart pairing button B1 and the second smart pairing button B2, The audio-visual transmission workstation 20 and the receiver 30 will be quickly paired. After the pairing is completed, the audio-visual data can be transmitted.

The video live broadcast system created by this author directly produces the compression of audio-visual data and the program of simulating the audio-visual level of the universal serial bus in the audio-visual transmission workstation. The audio-visual data can be compressed and simulated in the audio-visual transmission workstation in advance. Therefore, the mobile devices connected to the video transmission work exhibition do not need to install related applications. They can be used by connecting to the video transmission workstation of this creation, which increases the convenience of use.

Above, although the above embodiments have been used to illustrate the content of the creation in detail, the creation is not limited to these implementations. Those with ordinary knowledge in the technical field of this creation should be able to understand and understand: without departing from the spirit and scope of this creation, various changes and modifications can be made; for example, the various technical contents illustrated in the foregoing embodiments They are combined or changed to become new implementations, and these implementations are of course regarded as the content of this creation. Therefore, the scope of protection in this case also includes the scope of patent application and the scope defined by it.

10: Photography installation 20: Audiovisual transmission workstation 21: Processing module 22: Wireless transmission module 30: receiver 40: mobile device 41: Processing Unit 42: display unit 43: communication unit 100: live video system 211: Audio-visual data receiving unit 212: Audio and Video Processing Unit 213: Universal serial bus audio-visual level analog unit B1: The first smart pairing button B2: The second smart pairing button L: mobile device N: Network P: Audio and video playback device

Figure 1 is a schematic diagram of the created live video broadcast system.

Figure 2 is a block diagram of the created live video broadcast system.

Figure 3 is a schematic diagram of the created audio-visual transmission workstation and receiver.

10: Photography installation

20: Audiovisual transmission workstation

30: receiver

40: mobile device

100: live video system

L: mobile device

N: Network

P: Audio and video playback device

Claims (11)

An audio-visual transmission workstation, which includes: A processing module, the processing module includes: At least one audio-visual data receiving unit that receives audio-visual data captured from a photographing device; An audio-visual processing unit compresses or converts the received audio-visual data to generate compressed audio-visual data; and A wireless transmission module transmits the compressed video and audio data to a mobile device via a network. According to claim 1, the audio-visual transmission workstation further includes a power module electrically connected to the processing module, and the power module provides power to the processing module and the wireless transmission module. The audio-visual transmission workstation according to claim 1, wherein the processing module and the wireless transmission module are integrated to form a system-on-a-chip. The audio-visual transmission workstation according to claim 1, wherein the photographing device is a photographing device with a high-definition multimedia interface. The audio-visual transmission workstation according to claim 4, wherein the processing module further includes a universal serial bus audio-visual level simulation unit, which converts the audio-visual data into an analog audio-visual data, and the analog audio-visual data is simulated into a universal serial bus audio-visual The video and audio data captured by the capturing device, the analog video and audio data are compressed by the video and audio processing module to generate the compressed video and audio data. The audio-visual transmission workstation according to claim 1, wherein the photographing device is a photographing device of a universal serial bus interface. The audio-visual transmission workstation according to claim 1, wherein the wireless transmission module transmits the transmission packets to the mobile device via the network using the Wifi communication standard. The audio-visual transmission workstation according to claim 1, wherein the audio-visual processing module includes an H.264 video encoding engine. A live video broadcast system includes: A photographing device; For the audio-visual transmission workstation described in any one of claim items 1 to 8, the image captured by the photographing device is transmitted to the audio-visual transmission workstation; A mobile device, the compressed video and audio data is transmitted to the mobile device, and the mobile device transmits the compressed video and audio data to a network platform via an application; wherein When the camera device is a universal serial bus image-level webcam (UVC Webcam), the compressed video and audio data is sent to the mobile device; When the camera is a high-definition multimedia interface camera (HDMI Camera), the universal serial bus audio-visual level analog unit converts the audio-visual data into the analog audio-visual data, and the analog audio-visual data is compressed by the audio-visual processing module The compressed audio-visual data is generated, and the compressed audio-visual data is sent to the mobile device. According to claim 9, the live video broadcasting system further includes a receiver, which is pluggably installed in the mobile device. The receiver has a wireless receiving module. After the compressed video and audio data is received by the wireless receiving module, Send to this mobile device. The live video broadcast system of claim 9, wherein the audio-visual transmission workstation has a first smart pairing button, the receiver has a second smart pairing button, and the first smart pairing button and the second smart pairing button generate a pairing signal To enable the audio-visual transmission workstation to communicate with the receiver.

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