WO2020233722A1

WO2020233722A1 - Wireless screen projection transfer device and wireless screen projection system

Info

Publication number: WO2020233722A1
Application number: PCT/CN2020/091992
Authority: WO
Inventors: 王振中; 吴刚; 张光龙; 王犇逸
Original assignee: 苏州必捷网络有限公司
Priority date: 2019-05-23
Filing date: 2020-05-25
Publication date: 2020-11-26
Also published as: CN209526823U

Abstract

Disclosed are a wireless screen projection transfer device and a wireless screen projection system. The transfer device comprises an audio input interface, a video input interface, an audio processing module, a video processing module, and a first wireless communication module. Input ends of both the audio input interface and the video input interface are electrically connected to a carrier where the content to be performed screen projection is stored. An output end of the audio input interface is connected to an input end of the audio processing module. An output end of the video input interface is connected to an input end of the video processing module. Output ends of both the audio processing module and the video processing module are connected to the first wireless communication module. The first wireless communication module is used for wirelessly sending the processing result of the audio processing module and/or video processing module to a screen projection device. According to the present invention, a computer screen can be wirelessly sent to the screen projection device by means of the transfer device connected to an interface of the computer screen without installing any software on a computer.

Description

Wireless screen projection relay equipment and wireless screen projection system

Technical field

The invention relates to the field of projection equipment, in particular to a wireless projection screen relay device and a wireless projection system.

Background technique

With the popularization of smart office, business office is increasingly pursuing high efficiency and simplicity. In the current business office, when you send computer content to the projector, you need to connect the computer to the projector with a VGA or HDMI cable harness; there are also some wireless projection devices, but they all need to install or run software for wireless audio and video transmission; or Using the computer's own Airplay and WIDI protocols for projection has the problem of inconvenient operation.

Therefore, it is necessary to provide a new and convenient projection method to solve the above problems.

Summary of the invention

In order to solve the problems of the prior art, the present invention provides a wireless projection relay device and a wireless projection system, so that the computer or mobile phone does not need to install or run any software, and does not need to be connected to the display device with a wire harness, which is simple and convenient To achieve wireless audio and video transmission, the technical solutions are as follows:

In one aspect, the present invention provides a wireless projection relay device, including a housing, an audio input interface, a video input interface, an audio processing module, a video processing module, and a first wireless communication module, wherein the audio processing module, video The processing module and the first wireless communication module are arranged inside the casing, and the input end of the audio input interface and the input end of the video input interface are both used to electrically connect with a carrier storing the content to be projected outside the wireless projection transfer device;

The output end of the audio input interface is connected to the input end of the audio processing module, the output end of the video input interface is connected to the input end of the video processing module, and the audio processing module is used to process content to be projected The video processing module is used to process the video information in the content to be cast on the screen;

The output end of the audio processing module and the output end of the video processing module are both connected to the input end of the first wireless communication module, and the first wireless communication module is used to connect the audio processing module and/or the video processing module The processing result is sent wirelessly to the projection device outside the wireless projection relay device. The carrier is connected to the wireless projection relay device in a wired manner, so that the carrier does not need to install and run some software programs that can realize projection; the projection device is connected to the wireless projection relay device in a wireless manner , So that the space between the carrier and the projection device is relieved from the trouble of wiring troubles in space.

Further, the wireless projection relay device further includes a reverse control interface provided on the housing and a reverse control module provided in the housing. The input end of the reverse control module is connected to the first wireless communication module. The connection is made through a wired electronic signal line, and the output end of the reverse control module and the reverse control interface are connected through a wired electronic signal line.

Optionally, the reverse control interface is a USB interface or a Type-C interface, and the reverse control interface is used to electrically connect with an external carrier, so that the carrier receives the data transmitted from the projection device The reverse control instruction realizes the transformation of the screen operation on the projection device into the operation on the carrier screen.

Further, the wireless screen projection relay device further includes a power supply module for power supply arranged in the housing, the power supply module is connected to an external power supply through a reverse control interface, and the external power supply may be the power supply of the carrier or It is a portable power source, and the power module is used to supply external power to the wireless projection relay device.

The audio input interface and the video input interface are both HDMI interfaces or both are Type-C interfaces.

Optionally, the audio input interface and the video input interface are mutually independent interfaces, or the audio input interface and the video input interface are integrated into one interface.

Optionally, the audio input interface is a line-in interface, and the video input interface is a VGA interface or a DP interface.

Further, the audio input interface and the audio processing module are connected through a wired electronic signal line, the video input interface and the video processing module are connected through a wired electronic signal line, and the audio processing module and the video processing module are both connected through a wired electronic signal line. The electronic signal line is connected with the first wireless communication module. The wired connection of the internal modules of the wireless projection relay device and the wired connection with the wireless projection relay device and the external carrier can ensure that the content to be projected stored in the carrier can be stably transmitted to the first wireless communication Module.

On the other hand, the present invention also provides a wireless projection system, including a carrier storing content to be projected, a projection device, and the wireless projection relay device as described above.

Further, the audio input interface of the wireless screen projection relay device and the audio output interface of the carrier are connected through an audio interface line, and the video input interface of the wireless screen projection relay device and the video output interface of the carrier are connected through a video interface line.

Further, the screen projection device includes an output module, a data processing unit, and a second wireless communication module. The second wireless communication module is bidirectionally connected to the first wireless communication module of the wireless screen projection relay device, and the data The input end of the processing unit is connected to the second wireless communication module, the output end of the data processing unit is connected to the output module, and the data processing unit is configured to receive data received from the second wireless communication module. Data, and send the processed data to the output module for playback. The two-way communication between the second wireless communication module and the first wireless communication module makes it possible to realize the reverse control of the carrier by the projection device in addition to the forward projection of the carrier to the projection device.

Further, the output module includes a display unit and/or a channel unit. That is, in the projection operation, only the screen image information on the carrier can be projected to the display unit of the projection device, or only the sound information on the carrier can be projected to the channel unit of the projection device. Of course, the image information can also be projected at the same time. And sound information, in this case, the display unit and the channel unit are played synchronously.

The beneficial effects brought about by the technical solution provided by the present invention are as follows:

a. The computer or mobile phone connected to the transfer device does not need to install or run any software, and the content on the computer or mobile phone can be screened;

b. The computer or mobile phone carrying the projection content does not need to be connected to the projection display device with a wire harness to realize wireless projection;

c. It can be applied to computers or mobile phones with different interfaces on the market, with high versatility;

d. No need to install or run any software on the computer (or smart mobile terminal) carrier to operate the screen projection device and control the computer (or smart mobile terminal) in reverse.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

FIG. 1 is a block diagram of modules of a wireless projection system provided by an embodiment of the present invention;

Figure 2 is a data flow diagram of a wireless projection system provided by an embodiment of the present invention;

Figure 3 is a block diagram of a wireless projection relay device with a reverse control module provided by an embodiment of the present invention;

Figure 4 is a data flow diagram in the reverse control process provided by an embodiment of the present invention;

Fig. 5 is a block diagram of a module of the wireless projection system of the first interface style provided by the present invention;

Fig. 6 is a block diagram of modules of a second interface style wireless projection system provided by the present invention;

FIG. 7 is a block diagram of modules of a wireless projection system with a third interface style provided by the present invention;

Fig. 8 is a schematic diagram of the module connection mode of the wireless projection system provided by the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, device, product, or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

In an embodiment of the present invention, a wireless screen projection relay device is provided. Referring to FIG. 1, the wireless screen projection relay device includes a housing, an audio input interface, a video input interface, an audio processing module, a video processing module, and The first wireless communication module, wherein the audio processing module, the video processing module and the first wireless communication module are arranged inside the housing, and the input end of the audio input interface and the input end of the video input interface are both used to communicate with the wireless projection The carrier (such as a computer or smart mobile terminal) that stores the content to be projected outside the screen transfer device is electrically connected. Specifically, the content to be projected includes the video frame image currently displayed on the computer (or smart mobile terminal) screen and the corresponding current Audio information.

The output end of the audio input interface is connected to the input end of the audio processing module, the output end of the video input interface is connected to the input end of the video processing module, and the audio processing module is used to process content to be projected Specifically, the main function of the audio processing module is to preprocess the audio data collected from the audio input interface and encode it into an audio format that can be transmitted over the wireless network; the video processing module is used for processing For the video information in the content to be projected, the main function of the video processing module is to preprocess the video data collected by the video input interface and encode it into a video format that can be transmitted via a wireless network. Audio processing and video processing are mature technologies in the computer field. For example, the HI3516 chip produced by Huawei HiSilicon is a chip that integrates the audio processing module and the video processing module. The present invention does not limit this type of chip, and aims to prove that the audio processing module and the video processing module are existing technologies.

If the audio processing module and the video processing module are integrated on a chip, that is, the two modules have a common interface. In an embodiment of the present invention, the audio input interface and the video input interface may be HDMI interfaces or They are all Type-C interfaces. Under this interface setting, the audio input interface and the video input interface can be integrated into one interface, as shown in FIG. 6. If they are not integrated on a chip, even if the audio processing module and the video processing module have HDMI interfaces, they can also be independent interfaces (not shown).

In addition to the HDMI interface and the Type-C interface, the audio input interface can also be a line-in interface, and the video input interface can also be a VGA interface. See Figure 5. In this case, the audio input interface and The video input interface cannot be integrated into one interface, but is an independent interface. The video input interface may also be a DP interface (not shown). Similarly, in this case, the audio input interface and the video input interface are independent interfaces.

The output end of the audio processing module and the output end of the video processing module are both connected to the input end of the first wireless communication module, and the first wireless communication module is used to connect the audio processing module and/or the video processing module The processing result is sent wirelessly to the projection device outside the wireless projection relay device. Specifically, the main function of the first wireless communication module is to transmit data processed by the audio processing module and/or the video processing module through the first wireless communication module. The first wireless module may adopt a WIFI mode, or a WirelessHD 60GHz mode, or a UWB mode, or a satellite communication mode, or a 4G, 5G mode in mobile communication, or other high-speed wireless transmission modes. Specifically, a second wireless communication module is provided on the screen projection device for receiving data from the first wireless communication module, and then the data processing unit of the screen projection device processes and converts the data (including some data format conversion operations) It is the image and/or sound data that can be played on the output module (display unit and/or channel unit) of the projection device.

In the embodiment of the present invention, the audio input interface and the audio processing module are connected through a wired electronic signal line, the video input interface and the video processing module are connected through a wired electronic signal line, the audio processing module, the video processing module All are connected with the first wireless communication module through wired electronic signal lines. In summary, taking the computer as an example, the data flow in the wireless projection process is shown in Figure 2: The computer audio data is transmitted to the audio processing module through the audio wired interface, and the audio processing module is processed through audio, such as denoising, analog and digital Conversion, encoding, etc., wired transmission to the first wireless communication module, computer video data is transmitted to the video processing module through the video wired interface, and the video processing module is wired to the first wireless communication module through video processing, such as analog-to-digital conversion, encoding, etc. Communication module, and the first wireless communication module wirelessly sends the processed audio processing results and video processing results to the second wireless communication module of the projection device. The first wireless communication module receives the audio and video data through the wire, and The audio and video data is packaged into a packet format that can be transmitted through the wireless network, such as dividing the network packet size, marking the audio and video synchronization data, etc., transmitting the audio and video packets through the wireless module, and finally the screen device will wirelessly receive the audio and/ Or the video processing result is displayed on the display module.

In a preferred embodiment of the present invention, the wireless screen projection relay device further includes a reverse control interface provided on the housing and a reverse control module provided in the housing. As shown in FIG. 3, the reverse control interface The control module, the reverse control interface and the first wireless communication module are all connected through a wired electronic signal line. Optionally, the reverse control interface is a USB interface or a Type-C interface. Specifically, when the audio and video cable uses the Type-C interface, the reverse control line can be shared with it; when the audio and video cables are of other types , This reverse control line can be a USB harness. As shown in FIG. 3, the wireless projection relay device also includes a power supply module for power supply arranged in the housing, the power supply module is connected to an external power supply through a reverse control interface, and the external power supply can be optionally a carrier ( Computer or smart mobile terminal) power supply or portable charging power supply.

In an embodiment of the present invention, when the audio input interface, the video input interface and the reverse control interface are all Type-C interfaces, as shown in FIG. 7, the wireless projection relay device and the carrier (computer or smart Mobile terminals) can be integrated into a single Type-C interface connection.

In an embodiment of the present invention, a wireless projection system is also provided. Referring to FIG. 1, the projection system includes a carrier storing content to be projected, a projection device, and the wireless projection system provided in the above embodiment. Cast screen transfer equipment. As shown in FIG. 8, the carrier and the wireless screen projection relay device are connected in a wired manner, and the wireless screen projection relay device and the screen projection device are connected in a wireless manner.

In an embodiment of the present invention, the screen projection device includes an output module, a data processing unit, and a second wireless communication module, and the second wireless communication module is bidirectional with the first wireless communication module of the wireless screen projection relay device. Communication connection, the input end of the data processing unit is connected to the second wireless communication module, the output end of the data processing unit is connected to the output module, and the data processing unit is used to connect to the second wireless communication module. The data received at the communication module, and the processed data is sent to the output module for playback.

In addition to the first wireless communication module wirelessly sending data to the second wireless communication module on the screen projection device for screen projection, reverse control can also be implemented, that is, the second wireless communication module wirelessly sends data to the first wireless communication module, As shown in FIG. 5, the second wireless communication module is in two-way communication connection with the first wireless communication module of the wireless projection relay device. Refer to Figure 4 for the reverse control flow: the projection device wirelessly transmits the control command to the first wireless communication module through the second wireless communication module, and the first wireless communication module transmits the control command to the reverse control module in a wired manner. After receiving the control instruction from the control module, it is converted into the corresponding mouse, keyboard or touch instruction, and transmitted to the computer or smart mobile terminal in a wired manner. The computer or smart mobile terminal responds to the corresponding mouse, keyboard, and touch signals to execute the corresponding Operation.

The wireless projection relay device provided by the embodiment of the present invention can be made into a portable device, and the size can be made into a U disk size. When performing wireless projection operations, only the portable wireless projection relay device needs to be wired to the carrier (computer or On the smart mobile terminal), and then turn on the projection device with the wireless module, the content on the carrier can be projected to the projection device, and the carrier can also be reversely controlled by the reverse control module, that is, the projection screen The human-computer interaction interface on the display unit of the device performs direct operations and generates reverse control instructions to reversely correspond to the current display interface of the operating carrier.

The screen projection system of the present invention only requires a wired connection to the transfer device on the computer (or smart mobile terminal), without installing any software on the computer (or smart mobile terminal), and the data to be projected can be transmitted to The transfer device, after processing the data through the transfer device, wirelessly sends it to the projection device for projection and playback.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.

Claims

A wireless projection transfer device, which is characterized by comprising a housing, an audio input interface, a video input interface, an audio processing module, a video processing module, and a first wireless communication module, wherein the audio processing module, the video processing module, and the The first wireless communication module is arranged inside the casing, and the input end of the audio input interface and the input end of the video input interface are both used to electrically connect with a carrier storing the content to be projected outside the wireless projection relay device;

The output end of the audio input interface is connected to the input end of the audio processing module, the output end of the video input interface is connected to the input end of the video processing module, and the audio processing module is used to process content to be projected The video processing module is used to process the video information in the content to be cast on the screen;

The output end of the audio processing module and the output end of the video processing module are both connected to the input end of the first wireless communication module, and the first wireless communication module is used to connect the audio processing module and/or the video processing module The processing result is sent wirelessly to the projection device outside the wireless projection relay device.
The wireless projection relay device according to claim 1, further comprising a reverse control interface provided on the housing and a reverse control module provided in the housing, the input end of the reverse control module and The first wireless communication module is connected through a wired electronic signal line, and the output end of the reverse control module and the reverse control interface are connected through a wired electronic signal line.
The wireless projection relay device of claim 2, wherein the reverse control interface is a USB interface or a Type-C interface.
The wireless screen projection relay device according to claim 2, further comprising a power supply module for power supply provided in the housing, and the power supply module is connected to an external power supply through a reverse control interface.
The wireless projection relay device according to claim 1, wherein the audio input interface and the video input interface are both HDMI interfaces or both are Type-C interfaces.
The wireless projection transfer device according to claim 5, wherein the audio input interface and the video input interface are independent interfaces.
The wireless screen projection relay device of claim 5, wherein the audio input interface and the video input interface are integrated into one interface.
The wireless screen projection relay device of claim 1, wherein the audio input interface is a line-in interface, and the video input interface is a VGA interface or a DP interface.
The wireless projection relay device of claim 1, wherein the audio input interface and the audio processing module are connected by a wired electronic signal line, and the video input interface and the video processing module are connected by a wired electronic signal line , The audio processing module and the video processing module are both connected to the first wireless communication module through a wired electronic signal line.
A wireless projection system, characterized by comprising a carrier storing content to be projected, a projection device, and the wireless projection relay device according to any one of claims 1-9.
The wireless projection system according to claim 10, wherein the audio input interface of the wireless projection relay device and the audio output interface of the carrier are connected by an audio interface cable, and the video input interface of the wireless projection relay device The video output interface of the carrier is connected through a video interface cable.
The wireless projection system of claim 10, wherein the projection device includes an output module, a data processing unit, and a second wireless communication module, and the second wireless communication module and the wireless projection relay device The first wireless communication module is two-way communication connection, the input end of the data processing unit is connected with the second wireless communication module, the output end of the data processing unit is connected with the output module, and the data processing unit is used for Process the data received from the second wireless communication module, and send the processed data to the output module for playback.
The wireless projection system of claim 12, wherein the output module comprises a display unit and/or a sound channel unit.