Same-screen display device and display system

Abstract

The utility model discloses a same-screen display device and a display system, which are characterized in that a wireless audio and video communication signal is received through a receiving end wireless communication module, the wireless audio and video communication signal is converted into audio and video digital data, an audio and video decoding module converts the audio and video digital data into a high-definition multimedia signal, and the high-definition multimedia signal is transmitted to the receiving end wireless communication module; the receiving end processing module receives a high-definition multimedia signal, outputs an audio signal to the audio output interface according to the high-definition multimedia signal and outputs a video signal to the video output interface, and the power supply module supplies power to the receiving end wireless communication module, the audio and video decoding module and the receiving end processing module according to power supply voltage. Therefore, the functions of video acquisition, wireless transmission, audio input and power management are integrated by a single device, the technical bottlenecks of a traditional scheme in transmission distance, resolution and multi-system compatibility are broken through, and the problem that the application scene of a same-screen display in the related technology is limited is solved.

Description

Technical Field

[0001] This application relates to the field of serial communication technology, specifically to a screen-on display device and display system. Background Technology

[0002] Screen mirroring devices are widely used in classroom teaching, home entertainment, and conference presentations, playing an important role in improving user experience and convenience.

[0003] However, in related technologies, wired screen mirroring devices connect one end of the cable to the mobile terminal and the other end to the display device, which limits the application scenarios for screen mirroring. Summary of the Invention

[0004] In view of the above problems, this application provides a screen-sharing display device and display system, which can solve the problem that the application scenarios of screen-sharing displays in related technologies are limited.

[0005] The first aspect of this application provides a screen-sharing display device, including:

[0006] The receiving wireless communication module is used to receive wireless audio and video communication signals and convert the wireless audio and video communication signals into audio and video digital data.

[0007] The audio and video decoding module is used to receive the audio and video digital data and convert the audio and video digital data into high-definition multimedia signals;

[0008] The receiving end processing module is connected to the audio output interface, the video output interface and the audio and video decoding module, and is used to receive the high-definition multimedia signal, and output the audio signal to the audio output interface and the video signal to the video output interface according to the high-definition multimedia signal.

[0009] The power supply module is connected to the receiving wireless communication module, the audio and video decoding module, and the receiving processing module. It is used to connect to the power supply voltage and supply power to the receiving wireless communication module, the audio and video decoding module, and the receiving processing module according to the power supply voltage.

[0010] In some embodiments, the screen-sharing device further includes:

[0011] A data transmission interface is connected to the receiving end processing module and is used to store the audio and video data output by the receiving end processing module when a storage medium is connected.

[0012] In some embodiments, the screen-sharing device further includes:

[0013] The video acquisition module is used to acquire video signals;

[0014] A video data conversion module, connected to the video acquisition module, is used to convert the video signal into a digital video signal;

[0015] The audio acquisition module is used to convert the audio signal input from the audio acquisition terminal into a digital audio signal;

[0016] The transmitter processing module is connected to the video data conversion module and the audio acquisition module, and is used to output high-definition multimedia digital signals based on the video digital signals and the audio digital signals;

[0017] The transmitter wireless communication module is connected to the transmitter processing module and is used to convert the high-definition multimedia digital signal into a wireless audio and video communication signal for transmission.

[0018] In some embodiments, both the transmitter processing module and the audio / video decoding module include an AM8360D chip or an AM8275 chip.

[0019] In some embodiments, the audio acquisition module includes a CM9600 chip.

[0020] In some embodiments, the video data conversion module includes a GSV1201S chip or a GSV2201S chip.

[0021] In some embodiments, the transmitting wireless communication module and the receiving wireless communication module include an AM9421 chip.

[0022] In some embodiments, the receiver processing module includes an MS2131 chip.

[0023] In some embodiments, the data transmission interface is a USB 3.0 interface. The receiving end processing module downloads video data to the storage medium via the data transmission interface and loops out the video signal for playback in 4K 60Hz format.

[0024] A second aspect of this application also provides a display system, which includes a screen-sharing display device as described in any of the above embodiments.

[0025] The beneficial effects of this application embodiment are as follows: The receiving end wireless communication module receives wireless audio and video communication signals and converts the wireless audio and video communication signals into audio and video digital data. The audio and video decoding module converts the audio and video digital data into high-definition multimedia signals. The receiving end processing module receives the high-definition multimedia signals and outputs audio signals to the audio output interface and video signals to the video output interface according to the high-definition multimedia signals. The power supply module supplies power to the receiving end wireless communication module, audio and video decoding module and receiving end processing module according to the supply voltage, thereby realizing the functions of video acquisition, wireless transmission, audio input and power management in a single device. It breaks through the technical bottlenecks of traditional solutions in terms of transmission distance, resolution and multi-system compatibility, and solves the problem of limited application scenarios for screen-sharing displays in related technologies.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a schematic diagram of a first structure of the screen-sharing display device provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of a second structure of the screen-sharing display device provided in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of a third structure of the screen-sharing display device provided in the embodiments of this application. Detailed Implementation

[0031] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The phrase "second connection port" at various locations in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0036] In the description of the embodiments of this application, the term "multiple frames" refers to two or more (including two).

[0037] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] Screen sharing devices have wide applications in daily life and work. For example, in classroom teaching, they can project multimedia content from smartphones and other devices onto a large screen for synchronized display, improving teaching efficiency and interactivity. In home entertainment, users can watch movies and TV series on their phones or tablets on a large screen, enhancing the viewing experience. In conference presentations, they can share laptop screens in real time, facilitating presentations and discussions. Through these functions and application scenarios, screen sharing devices play a significant role in improving user experience and convenience. However, current wired screen sharing devices connect one end of the cable to the mobile terminal and the other end to the display device, which limits the application scenarios for screen sharing.

[0039] To address the aforementioned technical problems, this application provides a screen-sharing display device, see [link to relevant documentation]. Figure 1 As shown, the screen-sharing display device in this embodiment includes: a receiving wireless communication module 300, an audio / video decoding module 100, a receiving processing module 200, and a power supply module 400. The receiving wireless communication module 300 receives wireless audio / video communication signals and converts them into audio / video digital data. The audio / video decoding module 100 receives audio / video digital data and converts it into high-definition multimedia signals. The receiving processing module 200 is connected to an audio output interface 510, a video output interface 520, and the audio / video decoding module 100. The receiving processing module 200 receives high-definition multimedia signals and outputs audio signals to the audio output interface 510 and video signals to the video output interface 520 based on the high-definition multimedia signals. The power supply module 400 is connected to the receiving wireless communication module 300, the audio / video decoding module 100, and the receiving processing module 200. The power supply module 400 is connected to the power supply voltage and supplies power to the receiving wireless communication module 300, the audio / video decoding module 100, and the receiving processing module 200 based on the power supply voltage.

[0040] In this embodiment, the receiving wireless communication module 300 receives wireless audio and video communication signals and converts them into audio and video digital data. The audio and video decoding module 100 converts the audio and video digital data into high-definition multimedia signals. The receiving processing module 200 receives the high-definition multimedia signals and outputs audio signals to the audio output interface 510 and video signals to the video output interface 520 based on the high-definition multimedia signals. The power module 400 supplies power to the receiving wireless communication module 300, the audio and video decoding module 100, and the receiving processing module 200 according to the power supply voltage. This achieves the integration of video acquisition, wireless transmission, audio input, and power management functions in a single device, breaking through the technical bottlenecks of traditional solutions in terms of transmission distance, resolution, and multi-system compatibility, and solving the problem of limited application scenarios for screen-sharing displays in related technologies.

[0041] In some embodiments, the receiver wireless communication module 300, audio and video decoding module 100, receiver processing module 200, and power supply module 400 are integrated on the signal receiving board.

[0042] In some embodiments, see Figure 2 As shown, the screen-sharing device also includes a data transmission interface 530, which is connected to the receiving end processing module 200. The data transmission interface 530 is used to store the audio and video data output by the receiving end processing module 200 when a storage medium is connected.

[0043] In some embodiments, see Figure 3 As shown, the screen-sharing device also includes: a video acquisition module 720, a video data conversion module 730, an audio acquisition module 710, a transmitter processing module 740, and a transmitter wireless communication module 750. The video acquisition module 720 is used to acquire video signals; the video data conversion module 730 is connected to the video acquisition module 720 and is used to convert the video signals into video digital signals; the audio acquisition module 710 is used to convert the audio signals input from the audio acquisition module into audio digital signals; the transmitter processing module 740 is connected to the video data conversion module 730 and the audio acquisition module 710 and is used to output high-definition multimedia digital signals based on the video digital signals and audio digital signals; the transmitter wireless communication module 750 is connected to the transmitter processing module 740 and is used to convert the high-definition multimedia digital signals into wireless audio and video communication signals for transmission.

[0044] In some embodiments, the video acquisition module 720, the video data conversion module 730, the audio acquisition module 710, the transmitter processing module 740, and the transmitter wireless communication module 750 are integrated on the signal transmitting board.

[0045] In this embodiment, a dual-module setup using a signal transmitter board and a signal receiver board enables end-to-end wireless processing of audio and video signal acquisition, encoding, wireless transmission, decoding, and output. This achieves full-link wireless connectivity between the receiver and transmitter, greatly expanding the application scenarios of the screen-sharing display device.

[0046] In some embodiments, the video acquisition module 720 can be a Type-C interface, which can connect to a mobile terminal or a computer terminal. The video signal received by the Type-C interface is transmitted to the signal receiving board in sequence through the video data conversion module 730, the transmitter processing module 740, and the transmitter wireless communication module 750. In this way, full-link wireless transmission of Type-C interface, HDMI, 5.8G / 2.4G Wi-Fi, and HDMI can be realized.

[0047] In some embodiments, the transmitter processing module 740 is an AM8360D chip.

[0048] In this embodiment, the AM8360D chip can encode HDMI signals using H.265, increasing the compression rate by 50%, and can also encode audio signals using AAC, supporting a 48kHz sampling rate.

[0049] In some embodiments, the audio / video decoding module 100 includes an AM8360D chip or an AM8275 chip.

[0050] In this embodiment, the AM8360D chip or AM8275 chip and its peripheral devices constitute the audio and video decoding module 100. The AM8360D chip or AM8275 chip can decode the received wireless audio digital signal into a high-definition multimedia signal of the HDMI 2.0 standard. The AM8360D chip or AM8275 chip supports HDR10+, 10-bit color depth, and color gamut coverage of BT.2020.

[0051] In some embodiments, the HDMI 2.0 TMDS signal is input to the AM8360D chip or the AM8275 chip, which performs format video encoding and image compression processing on it.

[0052] In some embodiments, the AM8360D chip integrates an OFDM modem that can support 80MHz channel bandwidth.

[0053] In some embodiments, the audio acquisition module 710 includes a CM9600 chip.

[0054] In this embodiment, the CM9600 chip and its peripheral devices constitute the audio acquisition module 710. The CM9600 audio encoding chip receives the acquisition signal through the MIC, sends it to the processor for compression and processing, and packages the data for transmission to the WIFI module.

[0055] In some embodiments, when headphones or audio devices are connected, the PHONEJACK STEREO SW switch on the headphone jack is turned off, Mic_IN changes from high level to low level, and MS2131 converts the D+ / D- signals into AUDIO L / R signals and outputs them to the uplink host for data transmission.

[0056] In some embodiments, the CM9600 chip can convert microphone analog signals to digital signals. The CM9600 chip supports TWS stereo mode input / output, has a built-in digital noise reduction algorithm, and a signal-to-noise ratio ≥90dB.

[0057] In some embodiments, the CM9600 chip acquires audio through a 3.5mm interface or a built-in microphone, converts it into an I2S digital signal, and forwards it to the transmitter processing module 740740.

[0058] In some embodiments, the video capture module 720 can be a Type-C interface or an HDMI interface, and the video capture module 720 can be adapted to and compatible with the Type-C DP Alt Mode or HDMI output of mobile phones, tablets, and laptops.

[0059] In some embodiments, the video data conversion module 730 includes a GSV1201S chip or a GSV2201S chip.

[0060] In this embodiment, the GSV1201S chip or the GSV2201S chip and its peripheral devices constitute a video data conversion module 730. The GSV1201S chip or the GSV2201S chip converts Type-C or HDMI video signals into HDMI 2.0 digital signals. The GSV1201S chip or the GSV2201S chip can realize the conversion between Type-C video stream and HDMI signal, support Type-C DP Alt Mode to HDMI 2.0 conversion, and has a built-in EDID management unit.

[0061] In some embodiments, the video signal is converted into a digital video signal using a chip of model GSV1201S or model GSV2201S. The GSV1201S or GSV2201S chip is a highly integrated single-chip transmission interface replacement mode and power output 3.0 USB-C device controller for applications such as USB-C video adapters and USB-C multi-function docking points. Its integrated D+ / D-2.0ePHY supports chargers using the D+ / D- protocol handshake.

[0062] In some embodiments, the transmitter wireless communication module 750 includes an AM9421 chip.

[0063] In this embodiment, the AM9421 chip and its peripheral devices can form a transmitter wireless communication module 750, which is used to convert high-definition multimedia digital signals into wireless audio and video communication signals for transmission.

[0064] In some embodiments, the transmitter wireless communication module 750, composed of the AM9421 chip and its peripheral devices, transmits wireless audio and video communication signals in the form of 2.4GHz / 5.8GHz (ultra-high frequency) electromagnetic waves using Ethernet transmission format RGB888.

[0065] In some embodiments, the receiver wireless communication module 300 includes an AM9421 chip.

[0066] In this embodiment, the AM9421 chip and its peripheral devices can form a receiver wireless communication module 300, which is used to receive wireless audio and video communication signals in the form of 2.4Gbit-5.8Gbit / s (ultra-high frequency) electromagnetic waves and convert them into audio and video digital data.

[0067] In this embodiment, the AM9421 chip has dynamic voltage regulation function, output voltage range of 5V-20V, and signal amplification and anti-interference capabilities.

[0068] In some embodiments, the receiver processing module 200 includes an MS2131 chip.

[0069] In this embodiment, the MS2131 chip decodes the received HDMI signal and loops the decoded HDMI signal out to the display device. The MS2131 chip supports decoding 4K / 60Hz HDMI signals.

[0070] In some embodiments, the 5.8G band is enabled when a 5.8G signal strength > -65dBm is detected; otherwise, it automatically switches to the 2.4G band.

[0071] The screen mirroring device in this embodiment can achieve 4K 60Hz HDR video transmission (backward compatible with 1080P), and build a 1500-meter ultra-long-distance wireless transmission channel through the receiver wireless communication module 300 and the transmitter wireless communication module 750. It supports automatic switching between dual frequency bands (5.8G / 2.4G), integrates PD3.0 fast charging and MIC audio input, and is compatible with cross-operating systems (Windows XP / Vista / 7 / 10, Android, iOS, etc.).

[0072] In some embodiments, the data transmission interface 530 is a USB 3.0 interface. The receiving end processing module 200 downloads video data to the storage medium via the data transmission interface 530 and loops out the video signal for playback in 4K 60Hz format.

[0073] In some embodiments, USB 3.0 data can be acquired and downloaded via the TX / RX channel of the UP USB interface for video data storage, and a 4K 60Hz video signal can be looped out to the monitor for playback. Pin 18 of the HDMI connector supplies 5V power to the monitor. After the monitor receives the 5V level, the monitor's HDMI pin 19 detects a high level TX0_HPD and sends it to the MS2131 to identify the required EDIE resolution of the monitor. The HDMI connector's 1, 3, 4, 6, 7, 9, 10, and 12 TMDS signals are sent to the HDMI monitor.

[0074] In some embodiments, the power module 400 can be configured with a 5V-20V / 5A power supply current and supply power to the receiver wireless communication module 300, the audio and video decoding module 100, and the receiver processing module 200 via Type-C (PD100W).

[0075] In this embodiment, when the power module 400 is connected to the PD adapter, the PD adapter sends power supply capability information to the corresponding power-demanding device (e.g., PC or PAD). Upon receiving the power supply capability information, the power-demanding device sends a power demand message to the PD adapter, which then adjusts the voltage and current to supply power. Simultaneously, when a mobile device is inserted, the DM_U-C and DP_U-C signals first identify whether it is in 2.0 format or has RX+, RX- / TX+, TX- signals, then it enters a data mode of 3.0 or higher.

[0076] This application also provides a display system, which includes a screen display device as described in any of the above embodiments.

[0077] In this embodiment, the receiving wireless communication module 300 receives wireless audio and video communication signals and converts them into audio and video digital data. The audio and video decoding module 100 converts the audio and video digital data into high-definition multimedia signals. The receiving processing module 200 receives the high-definition multimedia signals and outputs audio signals to the audio output interface 510 and video signals to the video output interface 520 based on the high-definition multimedia signals. The power module 400 supplies power to the receiving wireless communication module 300, the audio and video decoding module 100, and the receiving processing module 200 according to the power supply voltage. This achieves the integration of video acquisition, wireless transmission, audio input, and power management functions in a single device, breaking through the technical bottlenecks of traditional solutions in terms of transmission distance, resolution, and multi-system compatibility, and solving the problem of limited application scenarios for screen-sharing displays in related technologies.

[0078] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0080] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the electronic device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0081] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0082] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0083] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A screen-sharing display device, characterized in that, include: The receiving wireless communication module is used to receive wireless audio and video communication signals and convert the wireless audio and video communication signals into audio and video digital data. The audio and video decoding module is used to receive the audio and video digital data and convert the audio and video digital data into high-definition multimedia signals; The receiving end processing module is connected to the audio output interface, the video output interface and the audio and video decoding module, and is used to receive the high-definition multimedia signal, and output the audio signal to the audio output interface and the video signal to the video output interface according to the high-definition multimedia signal. The power supply module is connected to the receiving wireless communication module, the audio and video decoding module, and the receiving processing module. It is used to connect to the power supply voltage and supply power to the receiving wireless communication module, the audio and video decoding module, and the receiving processing module according to the power supply voltage.

2. The screen-sharing display device according to claim 1, characterized in that, The screen-sharing display device also includes: A data transmission interface is connected to the receiving end processing module and is used to store the audio and video data output by the receiving end processing module when a storage medium is connected.

3. The screen-sharing display device according to claim 1, characterized in that, The screen-sharing display device also includes: The video acquisition module is used to acquire video signals; A video data conversion module, connected to the video acquisition module, is used to convert the video signal into a digital video signal; The audio acquisition module is used to convert the audio signal input from the audio acquisition terminal into a digital audio signal; The transmitting end processing module is connected to the video data conversion module and the audio acquisition module, and is used to output high-definition multimedia digital signals according to the video digital signals and the audio digital signals; The transmitter wireless communication module is connected to the transmitter processing module and is used to convert the high-definition multimedia digital signal into a wireless audio and video communication signal for transmission.

4. The screen-sharing display device according to claim 3, characterized in that, Both the transmitter processing module and the audio / video decoding module include an AM8360D chip or an AM8275 chip.

5. The screen-sharing display device according to claim 3, characterized in that, The audio acquisition module includes a CM9600 chip.

6. The screen-sharing display device according to claim 3, characterized in that, The video data conversion module includes either a GSV1201S chip or a GSV2201S chip.

7. The screen-sharing display device according to claim 3, characterized in that, The transmitting wireless communication module and the receiving wireless communication module both include the AM9421 chip.

8. The screen-sharing display device according to any one of claims 1-7, characterized in that, The receiving end processing module includes an MS2131 chip.

9. The screen-sharing display device according to claim 2, characterized in that, The data transmission interface is a USB 3.0 interface. The receiving end processing module downloads video data to the storage medium via the data transmission interface and loops out the video signal for playback in 4K 60Hz format.

10. A display system, characterized in that, The display system includes the screen display device as described in any one of claims 1 to 9.

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