Screen projection receiver and screen projection device
Patent Information
- Application Number
- CN202521430371.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-09
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-07-09
AI Technical Summary
[0003]然而，在面对一些旧版本的显示设备（例如无法建立和投屏设备连接的电视机、电脑显示器等）或者不支持安装应用程序的显示设备和投屏设备，上述方式则无法很好的实现投屏
[0030]上述投屏接收器中，参数获取模块实时读取显示设备的屏幕参数信息（分辨率、刷新率、色域），通信模块将这些参数反馈给投屏设备，确保发送的视频格式与显示设备完全匹配（如自动调整为4K@60Hz或1080p@120Hz），避免兼容性问题。从投屏设备编码→通信模块传输→解码模块处理→显示设备输出的全链路优化，能够保证传输效率，从而降低投屏延迟。解码模块能够支持高效编码格式，还原原始画面细节。通信模块直接将编码数据传输至解码模块，避免数据中转，减少数据拷贝开销，能够提升处理效率。连接接口与通信模块的分离布局，能够减少电磁干扰，提升无线传输稳定性。另外，对于旧版本或者不支持本身能够与投屏设备建立连接的显示设备，利用参数获取模块能够准确的确定屏幕参数信息，从而保证适配显示设备。利用解码模块能够对接收到的数据进行解码，并传输给显示设备，保证显示设备在投屏过程中能够正常显示图像。
Smart Images
Figure CN224790706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen projection technology, and in particular to a screen projection receiver and screen projection device. Background Technology
[0002] With the development of screen mirroring technology, more and more scenarios are now using screen mirroring devices to project content onto display devices for viewing, thereby enhancing the viewing experience. Traditional screen mirroring methods require establishing a connection between the display device and the screen mirroring device, or installing applications on both devices to enable screen mirroring.
[0003] However, the above method cannot effectively achieve screen mirroring when faced with some older display devices (such as TVs, computer monitors, etc. that cannot establish a connection with the screen mirroring device) or display devices and screen mirroring devices that do not support the installation of applications. Utility Model Content
[0004] Therefore, it is necessary to provide a screen mirroring receiver and a panoramic camera for display devices that cannot be mirrored.
[0005] A screen mirroring receiver, the screen mirroring receiver comprising:
[0006] Screen mirroring receiver housing;
[0007] A connection interface is provided on the housing of the screen projection receiver, and the connection interface is used to connect to a display device;
[0008] A parameter acquisition module and a decoding module are respectively connected to the connection interface; the parameter acquisition module is used to acquire the screen parameters of the display device through the connection interface.
[0009] The decoding module is used to send the decoded image data to the display device through the connection interface;
[0010] The communication module is connected to both the parameter acquisition module and the decoding module. The communication module is used to communicate with the projection device, receive encoded image data sent by the projection device, send the encoded image data to the decoding module, and send the screen parameters acquired by the parameter acquisition module to the projection device.
[0011] In one embodiment, the device further includes:
[0012] The power interface is located on the housing of the screen projection receiver;
[0013] The power module is connected to the power interface, the parameter acquisition module, the decoding module and the communication module respectively, and is used to supply power to the parameter acquisition module, the decoding module and the communication module.
[0014] In one embodiment, the power module is also connected to the connection interface, and the power module obtains power through the connection interface to supply power to the parameter acquisition module, the decoding module and the communication module.
[0015] In one embodiment, the connection interface includes a first connection interface and a second connection interface. The first connection interface is connected to the parameter acquisition module and the decoding module, respectively. The second connection interface is connected to the parameter acquisition module, the decoding module and the power supply module, respectively. The second connection interface is an interface that supports current transmission.
[0016] In one embodiment, the first connection interface includes: an HDMI interface, a DP interface, and a USB Type-C interface.
[0017] In one embodiment, the second connection interface includes: a USB Type-C interface, a Micro USB interface, and a Lightning interface.
[0018] In one embodiment, the communication module includes a data receiving module and a data sending module. The data receiving module is connected to the decoding module and is used to receive encoded image data sent by the projection device and send the encoded image data to the decoding module. The data sending module is connected to the parameter acquisition module and is used to receive screen parameters acquired by the parameter acquisition module and send the screen parameters to the projection device.
[0019] In one embodiment, the device further includes:
[0020] The communication interface is located on the housing of the screen projection receiver;
[0021] The communication interface is connected to the communication module and is also connected to the projection device to acquire encoded image data sent by the projection device.
[0022] In one embodiment, the communication interface includes: a USB Type-C interface and a Micro USB interface.
[0023] In one embodiment, the device further includes a storage module, which is connected to the parameter acquisition module, the decoding module, and the communication module, respectively.
[0024] This utility model also provides a screen projection device, which is connected to the screen projection receiver described in any of the above embodiments, and the screen projection device includes:
[0025] A device communication module, located in the projection device, is used to communicate with the projection receiver;
[0026] The parameter receiving module is connected to the device communication module and is used to obtain the screen parameters transmitted by the screen projection receiver;
[0027] The encoding module is connected to the device communication module and is used to encode image data and transmit the encoded image data to the device communication module.
[0028] In one embodiment, the projection device is a panoramic camera, which further includes: multiple panoramic lenses and an image stitching module connected to the multiple panoramic lenses;
[0029] The image stitching module is also connected to the encoding module and is used to send the stitched image data to the encoding module.
[0030] In the aforementioned screen mirroring receiver, the parameter acquisition module reads the screen parameter information (resolution, refresh rate, color gamut) of the display device in real time. The communication module feeds these parameters back to the screen mirroring device to ensure that the sent video format is fully compatible with the display device (e.g., automatically adjusted to 4K@60Hz or 1080p@120Hz), avoiding compatibility issues. End-to-end optimization from screen mirroring device encoding → communication module transmission → decoding module processing → display device output ensures transmission efficiency, thereby reducing screen mirroring latency. The decoding module supports efficient encoding formats, restoring original image details. The communication module directly transmits encoded data to the decoding module, avoiding data relay, reducing data copying overhead, and improving processing efficiency. The separate layout of the connection interface and communication module reduces electromagnetic interference and improves wireless transmission stability. Furthermore, for older versions or display devices that do not support direct connection to the screen mirroring device, the parameter acquisition module accurately determines the screen parameter information, ensuring compatibility with the display device. The decoding module decodes the received data and transmits it to the display device, ensuring that the display device can display images correctly during screen mirroring. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the screen mirroring receiver in one embodiment;
[0032] Figure 2 This is a schematic diagram of the power module structure in one embodiment;
[0033] Figure 3This is a schematic diagram of the connection between the power module and the connection interface in one embodiment;
[0034] Figure 4 This is a schematic diagram of the connection interface in one embodiment;
[0035] Figure 5 This is a schematic diagram of the communication module in one embodiment;
[0036] Figure 6 This is a schematic diagram of the communication interface in one embodiment;
[0037] Figure 7 This is a schematic diagram of the storage module in one embodiment;
[0038] Figure 8 This is a schematic diagram of the projection device in one embodiment;
[0039] Figure 9 This is a schematic diagram of the image stitching module and panoramic lens in one embodiment;
[0040] The attachments in the attached diagram are labeled as follows: 100, screen projection receiver; 110, screen projection receiver housing; 120, connection interface; 130, parameter acquisition module; 140, decoding module; 150, communication module; 160, power module; 170, power interface; 121, first connection interface; 122, second connection interface; 151, data receiving module; 152, data sending module; 180, communication interface; 190, storage module; 200, screen projection device; 210, device communication module; 220, parameter receiving module; 230, encoding module; 240, panoramic lens; 250, image stitching module. Detailed Implementation
[0041] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.
[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0047] See Figure 1 , Figure 1 This diagram illustrates the structure of a screen mirroring receiver according to an embodiment of the present invention. An embodiment of the present invention provides a screen mirroring receiver 100, comprising:
[0048] Screen mirroring receiver housing 110;
[0049] A connection interface 120 is provided on the screen projection receiver housing 110, and the connection interface 120 is used to connect to a display device;
[0050] The screen mirroring receiver housing 110 is the physical shell that houses the internal electronic components of the screen mirroring device (such as the motherboard, chips, interface modules, etc.), primarily serving to protect, support, dissipate heat, and enhance appearance. The housing 110 can be made of materials such as ABS engineering plastic, aluminum alloy, or PC (polycarbonate, which is highly impact-resistant). Additionally, the housing 110 may have ventilation holes or grilles to accelerate airflow and dissipate heat. The connection interface 120 is the hardware interface that enables physical connection and signal transmission between the screen mirroring receiver and the display device (such as a television, projector, or monitor), supporting bidirectional or unidirectional transmission of audio and video data.
[0051] The parameter acquisition module 130 and the decoding module 140 are respectively connected to the connection interface 120; the parameter acquisition module 130 is used to acquire the screen parameters of the display device through the connection interface 120.
[0052] The decoding module 140 is used to send the decoded image data to the display device through the connection interface 120.
[0053] The parameter acquisition module 130 is a hardware unit in the screen projection receiver responsible for reading the screen parameters of the display device. It communicates with the display device through the connection interface 120 to obtain information such as resolution, refresh rate, and color depth. The parameter acquisition module 130 can be an EDID reading chip (such as Silicon Image SI1161 or ITE IT66121): used to parse the Extended Display Identifier (EDID) data of the display device, supporting I²C or SPI communication protocols. It can also be a microcontroller (MCU): some modules integrate a low-power MCU (such as the STM32 series) for handling parameter parsing logic and interacting with the display device. The decoding module 140 is a hardware unit that decodes compressed image data (such as H.264 or H.265 encoded video streams) into raw pixel signals. The decoded image data is transmitted to the display device for display through the connection interface 120. The decoding module 140 can be composed of a video decoding chip. Video decoding chips can include: Realtek RTD1395, Amlogic T950X2 (supporting 4K@60Hz decoding), and NVIDIA Tegra series. The connection interface 120, parameter acquisition module 130, decoding module 140, and communication module can be set on the PCB board.
[0054] Specifically, the screen mirroring receiver is connected to the display device via connection interface 120. The parameter acquisition module 130 starts up after detecting power supply to the interface (such as the 5V pin of HDMI). The parameter acquisition module 130 sends an EDID read command to the display device via connection interface 120, and the display device returns EDID data through the DDC channel. The parameter acquisition module 130 parses the data and extracts parameters such as resolution and refresh rate. The decoding module 140 can decode the received data to obtain the decoded image.
[0055] The communication module 150 is connected to the parameter acquisition module 130 and the decoding module 140 respectively. The communication module 150 is used to communicate with the projection device, receive the encoded image data sent by the projection device, send the encoded image data to the decoding module 140, and send the screen parameters acquired by the parameter acquisition module 130 to the projection device.
[0056] The communication module 150 is the core component of the screen projection receiver, responsible for establishing a wireless or wired connection with the screen projection device (such as a mobile phone or computer) to receive encoded image data and provide screen parameter feedback. It acts as a data relay station, coordinating the information flow between the parameter acquisition module 130 and the decoding module 140.
[0057] Specifically, the communication module 150 can be connected to the decoding module 140 via a high-speed SPI (e.g., 80MHz) or PCIe Gen3x1 interface. The communication module 150 can also be connected to the parameter acquisition module 130 via an I²C bus.
[0058] In this embodiment, the parameter acquisition module 130 reads the screen parameter information (resolution, refresh rate, color gamut) of the display device in real time, and the communication module 150 feeds these parameters back to the projection device to ensure that the sent video format is fully compatible with the display device (e.g., automatically adjusted to 4K@60Hz or 1080p@120Hz), avoiding compatibility issues. End-to-end optimization from projection device encoding → communication module 150 transmission → decoding module 140 processing → display device output ensures transmission efficiency, thereby reducing projection latency. The decoding module 140 supports efficient encoding formats, restoring the original image details. The communication module 150 directly transmits the encoded data to the decoding module 140, avoiding data relay, reducing data copying overhead, and improving processing efficiency.
[0059] Furthermore, the parameter acquisition module 130 and the decoding module 140 use two separate modules for processing, which improves processing speed. The separate layout of the connection interface 120 and the communication module 150 reduces electromagnetic interference and improves the stability of wireless transmission. In addition, for older versions or those that do not support establishing a connection with the projection device, the parameter acquisition module 130 can accurately determine the screen parameter information, thereby ensuring compatibility with the display device. The decoding module 140 can decode the received data and transmit it to the display device, ensuring that the display device can display images normally during the projection process.
[0060] Combination Figure 2 As shown, Figure 2 The diagram shows a power interface and a power module interface according to one embodiment of the present invention. In some embodiments, the device further includes:
[0061] A power interface 170 is located on the housing 110 of the screen projection receiver;
[0062] The power module 160 is connected to the power interface 170, the parameter acquisition module 130, the decoding module 140 and the communication module 150 respectively, and is used to supply power to the parameter acquisition module 130, the decoding module 140 and the communication module 150.
[0063] Among them, the power module 160 can typically be a power supply system that converts externally input electrical energy into the voltage required by each functional module, and is responsible for voltage conversion, voltage regulation, distribution and power consumption management.
[0064] Specifically, the power module 160 can also be mounted on a PCB board and connected to the parameter acquisition module 130, power interface 170, decoding module 140, and communication module 150 via traces on the PCB board. The power module 160 can acquire electrical energy from the power interface 170 to power the aforementioned modules. The power module 160 can also send enable signals to each module via GPIO to control their power supply sequence (e.g., starting the parameter acquisition module 130 first, then starting the decoding module 140). The power interface 170 can be an interface capable of transmitting electrical energy, such as a USB Type-C interface or a DC power interface.
[0065] In this embodiment, the power module 160 is directly connected to each functional module (parameter acquisition, decoding, communication) to form a dedicated power supply path, avoiding mutual interference caused by voltage fluctuations due to multiple modules sharing the power supply (e.g., the high load of the decoding module 140 does not affect the stable operation of the communication module 150).
[0066] In one embodiment, such as Figure 3 As shown, the power module 160 is also connected to the connection interface 120. The power module 160 obtains power through the connection interface 120 and supplies power to the parameter acquisition module 130, the decoding module 140 and the communication module 150.
[0067] Specifically, in some scenarios, when the connection interface 120 is HDMI or USB Type-C (an interface capable of transmitting power), the display device (such as a TV or monitor) can supply power to the screen projection receiver through the interface.
[0068] In this embodiment, the collaborative design of the power module 160 and the connection interface 120 enables the screen projection receiver to have "self-powered" capability.
[0069] In one embodiment, such as Figure 4 As shown, the connection interface 120 includes: a first connection interface 121 and a second connection interface 122. The first connection interface 121 is connected to the parameter acquisition module 130 and the decoding module 140 respectively. The second connection interface 122 is connected to the parameter acquisition module 130, the decoding module 140 and the power module 160 respectively. The second connection interface 122 is an interface that supports current transmission.
[0070] Specifically, the screen mirroring receiver can be equipped with two different types of connection interfaces. Therefore, connection interface 120 can include a first connection interface 121 and a second connection interface 122. The first connection interface 121 can be an interface that cannot support current transmission. The second connection interface 122 can be an interface that can support current transmission. Therefore, the second connection interface 122 can connect to the parameter acquisition module 130 and the decoding module 140, and can also connect to the power module 160. The first connection interface 121 includes: an HDMI interface, a DP interface, and a USB Type-C interface. The second connection interface 122 includes: a USB Type-C interface, a Micro USB interface, and a Lightning interface.
[0071] In one embodiment, such as Figure 5 As shown, the communication module 150 includes a data receiving module 151 and a data sending module 152. The data receiving module 151 is connected to the decoding module 140 and is used to receive encoded image data sent by the projection device and send the encoded image data to the decoding module 140. The data sending module 152 is connected to the parameter acquisition module 130 and is used to receive screen parameters acquired by the parameter acquisition module 130 and send the screen parameters to the projection device.
[0072] The data receiving module 151 is a functional unit in the screen projection receiver responsible for receiving encoded image data (such as H.264 / HEVC video streams) from the screen projection device (such as a mobile phone or computer). The data sending module 152 is a functional unit that transmits the screen parameters (such as resolution and refresh rate) of the display device collected by the parameter acquisition module 130 back to the screen projection device, realizing information interaction during the screen projection process.
[0073] Specifically, the data receiving module 151 can be connected to the decoding module 140 via a high-speed SPI bus or a PCIe Gen3x1 bus. Typically, to support high-speed data transmission, a PCIe Gen3x1 connection is used. PCIe Gen3x1 is suitable for 4K / 60fps high bitrate scenarios, with a theoretical bandwidth of 985MB / s and an actual effective bandwidth >500MB / s. The data sending module 152 can be connected to the parameter acquisition module 130 via a PCIe Gen3x1 bus.
[0074] In some exemplary embodiments, the projection device can encode the screen content to be displayed into an H.264 stream and send it to the data receiving module 151 wirelessly or via wired connection. The data receiving module 151 demodulates the signal, verifies the CRC, and stores it in a DDR cache. The decoding module 140 reads the data from the cache sequentially and performs decoding processing. The parameter acquisition module 130 periodically reads the screen parameters of the display device (e.g., once per second). If a parameter change is detected (e.g., the user switches the resolution), the data sending module 152 is triggered. The data sending module 152 encapsulates the parameters in JSON format and pushes them to the projection device via the communication module 150. The projection device adjusts its encoding strategy (e.g., reducing the bitrate or resolution) according to the new parameters.
[0075] In one embodiment, such as Figure 6 As shown, the device further includes:
[0076] A communication interface 180 is provided on the housing 110 of the projection receiver;
[0077] The communication interface 180 is connected to the communication module 150, and the communication interface 180 is also connected to the projection device for acquiring the encoded image data sent by the projection device.
[0078] Specifically, the communication module 150 can connect to the projection device via wired or wireless means. When the communication module 150 needs a wired connection to the projection device (e.g., for fast data transmission or when the wireless signal is weak), the communication module 150 can connect to the projection device using the communication interface 180. The projection device can send encoded images to the communication module 150 via a wired connection. The communication interface 180 includes a USB Type-C interface and a Micro USB interface.
[0079] In one embodiment, such as Figure 7 As shown, the device further includes a storage module 190, which is connected to the parameter acquisition module 130, the decoding module 140 and the communication module 150 respectively.
[0080] Specifically, the storage module 190 can be connected to the parameter acquisition module 130 to store the screen parameters acquired by the parameter acquisition module 130. The storage module 190 can also be connected to the decoding module 140 to store the decoded data.
[0081] In one embodiment, such as Figure 8 As shown, a screen projection device 200 is provided, which is connected to the screen projection receiver in any of the above embodiments. The screen projection device includes:
[0082] A device communication module, located in the projection device, is used to communicate with the projection receiver;
[0083] The parameter receiving module is connected to the device communication module and is used to obtain the screen parameters transmitted by the screen projection receiver;
[0084] The encoding module is connected to the device communication module and is used to encode image data and transmit the encoded image data to the device communication module.
[0085] In one embodiment, such as Figure 9 As shown, the projection device is a panoramic camera, which further includes: multiple panoramic lenses and an image stitching module connected to the multiple panoramic lenses;
[0086] The image stitching module is also connected to the encoding module and is used to send the stitched image data to the encoding module.
[0087] Specifically, the projection device can be a panoramic camera. After capturing fisheye images, the panoramic lens of the panoramic camera can stitch them together using an image stitching module, and then send the stitched images to the encoding module. This achieves the effect of instant image capture and projection.
[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0089] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A screen mirroring receiver, characterized in that, The screen mirroring receiver includes: Screen mirroring receiver housing; A connection interface is provided on the housing of the screen projection receiver, and the connection interface is used to connect to a display device; A parameter acquisition module and a decoding module are respectively connected to the connection interface; the parameter acquisition module is used to acquire the screen parameters of the display device through the connection interface. The decoding module is used to send the decoded image data to the display device through the connection interface; The communication module is connected to both the parameter acquisition module and the decoding module. The communication module is used to communicate with the projection device, receive encoded image data sent by the projection device, send the encoded image data to the decoding module, and send the screen parameters acquired by the parameter acquisition module to the projection device.
2. The screen projection receiver according to claim 1, characterized in that, The screen mirroring receiver also includes: The power interface is located on the housing of the screen projection receiver; The power module is connected to the power interface, the parameter acquisition module, the decoding module and the communication module respectively, and is used to supply power to the parameter acquisition module, the decoding module and the communication module.
3. The screen projection receiver according to claim 2, characterized in that, The power module is also connected to the connection interface, through which the power module obtains power and supplies power to the parameter acquisition module, the decoding module and the communication module.
4. The screen projection receiver according to any one of claims 1 to 3, characterized in that, The connection interface includes a first connection interface and a second connection interface. The first connection interface is connected to the parameter acquisition module and the decoding module, respectively. The second connection interface is connected to the parameter acquisition module, the decoding module and the power supply module, respectively. The second connection interface is an interface that supports current transmission.
5. The screen projection receiver according to claim 4, characterized in that, The first connection interface includes: HDMI interface, DP interface, and USB Type-C interface; the second connection interface includes: USB Type-C interface, Micro USB interface, and Lightning interface.
6. The screen projection receiver according to claim 1, characterized in that, The communication module includes a data receiving module and a data sending module. The data receiving module is connected to the decoding module and is used to receive encoded image data sent by the screen projection device and send the encoded image data to the decoding module. The data sending module is connected to the parameter acquisition module and is used to receive screen parameters acquired by the parameter acquisition module and send the screen parameters to the screen projection device.
7. The screen projection receiver according to claim 1, characterized in that, The screen mirroring receiver also includes: The communication interface is located on the housing of the screen projection receiver; The communication interface is connected to the communication module and is also connected to the projection device to acquire encoded image data sent by the projection device.
8. The screen projection receiver according to claim 1, characterized in that, The screen projection receiver further includes a storage module, which is connected to the parameter acquisition module, the decoding module, and the communication module.
9. A screen projection device, characterized in that, The screen projection device is connected to the screen projection receiver according to any one of claims 1 to 8, and the screen projection device includes: A device communication module, located in the projection device, is used to communicate with the projection receiver; The parameter receiving module is connected to the device communication module and is used to obtain the screen parameters transmitted by the screen projection receiver; The encoding module is connected to the device communication module and is used to encode image data and transmit the encoded image data to the device communication module.
10. The projection device according to claim 9, characterized in that, The projection device is a panoramic camera, which further includes: multiple panoramic lenses and an image stitching module connected to the multiple panoramic lenses; The image stitching module is also connected to the encoding module and is used to send the stitched image data to the encoding module.