Portable wireless screen projector capable of being charged and discharged and screen projection method

Abstract

The invention discloses a portable wireless screen projector capable of being charged and discharged and a screen projection method, the portable wireless screen projector comprises a shell, a rear cover, a PCB, a built-in rechargeable battery, an HDMI interface, a power supply interface, a switch button, a state indicating lamp, a USB interface and a supporting base, the rear cover detachably covers the rear end part of the shell, the PCB and the built-in rechargeable battery are arranged in the shell, and the built-in rechargeable battery is arranged in the supporting base. A main control chip, a wireless projection screen module, a WiFi module, a 5G module, a video hard decoder, a video output module and an audio output module are arranged on the PCB, the HDMI interface and the power interface are arranged on the side wall of the shell, and the switch key, the state indicator lamp and the USB interface are arranged on the other side wall of the shell. A containing groove capable of containing the supporting base is formed in the lower end of the shell in a concave mode, and the supporting base is rotatably embedded in the containing groove. According to the technical scheme, additional power supply is not needed when the wireless screen projection function is used, user equipment can be charged through the rechargeable battery, and portability and heat dissipation performance are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless screen mirroring devices, and particularly to a rechargeable and portable wireless screen mirroring device and a screen mirroring method. Background Art

[0002] Wireless screen mirroring is also known as wireless screen synchronization, screen casting, and screen sharing. Specifically, it refers to a technical method of "real-time" displaying the screen of a mobile device A (such as a mobile phone, tablet, notebook, computer) on another device screen B (tablet, notebook, computer, TV, all-in-one computer, projector), and the output content includes various media information and real-time operation screens. Currently, the relatively mature solutions for supporting wireless screen mirroring technology are: Airplay screen mirroring in the Apple camp, the Miracast protocol of the WIFI Alliance, and DLNA push from other companies. Currently, with the update of the Windows 10 system, it already has a built-in wireless screen mirroring function. Whether it is documents, videos, or photos, as long as they are in the same local WIFI network environment, it only takes one key to mirror the screen from screen A to screen B.

[0003] Currently, when users travel, they always have to carry various personal items for work or life. Among them, a power bank and a wireless screen mirroring device are two of the most needed products for business trips. Currently, most power banks and wireless screen mirroring devices need to be carried separately, but the personal carrying capacity of users during business trips is very limited. Therefore, the present invention proposes a rechargeable and portable wireless screen mirroring device that integrates the two most needed products for users' business trips, namely a power bank and a wireless screen mirroring device, to reduce the number of items that users need to carry when traveling on business and make it more convenient for users to travel. Summary of the Invention

[0004] The main objective of the present invention is to propose a rechargeable and portable wireless screen mirroring device and a screen mirroring method, aiming to solve the technical problem that the existing power bank and wireless screen mirroring device need to be carried separately, occupying a large space and bringing inconvenience to users when traveling.

[0005] To achieve the above object, the rechargeable portable wireless screen mirroring device proposed by the present invention includes a housing, a rear cover, a PCB board, a built-in rechargeable battery, an HDMI interface, a power interface, a switch button, a status indicator light, a USB interface, and a support base. The rear cover is detachably covered on the rear end of the housing. The PCB board and the built-in rechargeable battery are arranged inside the housing. The PCB board is provided with a main control chip, a wireless screen mirroring module, a WiFi module, a 5G module, a video hard decoder, a video output module, and an audio output module. The HDMI interface and the power interface are arranged on the side wall of the housing. The switch button, the status indicator light, and the USB interface are arranged on the other side wall of the housing. A receiving groove for accommodating the support base is recessed at the lower end of the housing. The support base is rotatably embedded in the receiving groove. The built-in rechargeable battery, the HDMI interface, the power interface, the switch button, the status indicator light, and the USB interface are all electrically connected to the PCB board. A plurality of first heat dissipation grooves are recessed on the outer side wall of the housing. The first heat dissipation grooves are arranged in a blind hole structure. A first through groove communicating with the inside of the housing is respectively recessed on the upper end wall inside the first heat dissipation grooves. An open groove connected end to end is recessed on the outer side of the rear end wall of the rear cover along the circumferential direction. A plurality of second heat dissipation grooves are recessed on the outer side of the front end wall of the rear cover along the circumferential direction. The second heat dissipation grooves are all arranged in a blind hole structure. A second through groove communicating with the open groove is provided on the upper end wall of each second heat dissipation groove. The second through grooves are all located on the inner side wall of the open groove.

[0006] Optionally, a through hole is recessed at the bottom of the receiving groove. Two first elastic arms are relatively protruded on the upper end wall of the support base. The first elastic arms are arranged in an arc-shaped curved surface structure. A limiting flange is respectively protruded on the upper end of each first elastic arm. The first elastic arms are respectively embedded in the through hole. The limiting flanges are respectively abutted against the upper end wall of the through hole. The first elastic arms are respectively abutted against the inner peripheral wall of the through hole.

[0007] Optionally, two limiting columns are relatively protruded on the upper end wall of the support base. The limiting columns are respectively embedded in the through hole, and the limiting columns are respectively abutted against the inner peripheral wall of the through hole.

[0008] Optionally, a second elastic arm is horizontally provided on each side of the upper end of the support base. A limiting protrusion is respectively protruded on the front end of each second elastic arm. A plurality of limiting grooves are arranged on the lower end wall of the through hole along the circumferential direction. The outer contours of the limiting protrusion and the limiting groove are both arranged in an arc-shaped curved surface structure. The limiting protrusion is detachably embedded in the limiting groove.

[0009] Optionally, a first anti-slip silicone pad is respectively embedded on both sides of the lower end wall of the housing, and a second anti-slip silicone pad is embedded on the lower end wall of the support base.

[0010] Optionally, both the housing and the rear cover are made of aluminum alloy or magnesium alloy.

[0011] Optionally, a plurality of arc-shaped support portions protrude from the rear end wall of the rear cover.

[0012] Optionally, the built-in rechargeable battery uses a lithium polymer battery.

[0013] On the other hand, the present invention also proposes a screen mirroring method for the rechargeable and portable wireless screen mirroring device according to the above, and the screen mirroring method includes the following steps: Networking: The wireless screen mirroring device establishes a wireless connection with the user device through the WiFi P2P function. Without the user performing the networking operation himself, as long as the user device has the Wi-Fi Display function, it can automatically network during screen mirroring; Device discovery: The wireless screen mirroring device discovers the user device through WiFi P2P; Protocol configuration: The wireless screen mirroring device uses the RTSP protocol to negotiate the relevant configurations of the user device and the screen mirroring device, and controls the media data transmission; Audio and video data transmission and encryption: The audio and video data is encapsulated into PES packets, then the content is encrypted and protected using HDCP, then encapsulated into streaming media TS packets, and finally encapsulated into RTP packets, and transmitted through the UDP / TCP protocol; Reverse control: The wireless screen mirroring device uses the UIBC protocol to achieve reverse control of the user device during screen mirroring. There are two types of UBIC: generic and HIDC. Among them, Android devices generally support generic, Win10 supports the HIDC protocol, and some mobile phones such as Honor mobile phones default to support HIDC but also support generic.

[0014] Adopting the technical solution of the present invention has the following beneficial effects: In the technical solution of the present invention, the rear cover is detachably covered on the rear end of the housing. The PCB board and the built-in rechargeable battery are arranged inside the housing. The PCB board is provided with a main control chip, a wireless screen projection module, a WiFi module, a 5G module, a video hard decoder, a video output module, and an audio output module. The HDMI interface and the power interface are arranged on the side wall of the housing, and the power switch, the status indicator, and the USB interface are arranged on the other side wall of the housing. By integrating the built-in rechargeable battery into the wireless screen projector, the wireless screen projector does not require additional power supply during use, and can charge the user device through the built-in rechargeable battery, reducing the carrying burden and improving the portability. It is especially suitable for users who need to work remotely and travel frequently. Users only need one device to achieve charging and screen projection. The operation is simple and convenient. When conducting business presentations, education and training, or home entertainment, no additional power supply and screen projection devices are required, improving the efficiency of work and entertainment. The integrated device is applicable to various scenarios, whether it is a meeting room, a classroom, or a home living room, and can provide convenient screen projection and charging services. The built-in high-capacity battery not only provides stable power support for the wireless screen projection module and the USB reverse control keyboard and mouse device, but also can charge other devices, enhancing the overall battery life. Moreover, the housing has good heat dissipation performance, can effectively dissipate the excess heat inside the housing quickly, avoid the temperature rise inside the housing being too high, ensure the performance stability of the wireless screen projector, extend the service life, and at the same time prevent sundries from entering the inside of the housing. At the same time, it can also be placed vertically on the desktop through the support base for use, saving desktop space. When not in use, the support base can be hidden and stored, which is convenient to carry and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0016] Figure 1 FIG. is a schematic diagram of the overall structure of a rechargeable and portable wireless screen projector according to an embodiment of the present invention; Figure 2 FIG. is a schematic diagram of the overall structure of a rechargeable and portable wireless screen projector from another perspective according to an embodiment of the present invention; Figure 3 is Figure 2 the enlarged view of part A in Figure 4 FIG. is a schematic diagram of a partial structure of a rechargeable and portable wireless screen projector according to an embodiment of the present invention; Figure 5 is Figure 4 an enlarged view of part B in Figure 6 Another partial structural schematic diagram of a rechargeable portable wireless screen mirroring device according to an embodiment of the present invention; Figure 7 is Figure 6 an enlarged view of part C in Figure 8 An exploded structural schematic diagram of a rechargeable portable wireless screen mirroring device according to an embodiment of the present invention; Figure 9 A structural schematic diagram of a support base of a rechargeable portable wireless screen mirroring device according to an embodiment of the present invention; Figure 10 A step flowchart of a screen mirroring method of a rechargeable portable wireless screen mirroring device according to an embodiment of the present invention.

[0017] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0020] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0021] The present invention provides a rechargeable portable wireless screen mirroring device and a screen mirroring method.

[0022] Such as Figures 1 to 9As shown, in one embodiment of the present invention, the rechargeable portable wireless screen projector includes a shell 101, a back cover 102, a PCB board 103, a built-in rechargeable battery (not shown), an HDMI interface 104, a power interface 105, a switch button 106, a status indicator light 107, a USB interface 108 and a support base 109. The back cover 102 is detachably covered on the rear end of the shell 101, the PCB board 103 and the built-in rechargeable battery are arranged in the shell 101, and the PCB board 103 is provided with a main control chip, a wireless screen projection module, a WiFi module, a 5G module, a video hard decoder, a video output module and an audio output module. The HDMI interface 104 and the power interface 105 are arranged on the side wall of the shell 101, the switch button 106, the status indicator light 107 and the USB interface 108 are arranged on the other side wall of the shell 101, and the lower end of the shell 101 is recessed with a accommodating groove 101 that can accommodate the support base 109. 1, the support base 109 is rotatably embedded in the accommodating groove 1011, and the built-in rechargeable battery, HDMI interface 104, power interface 105, switch button 106, status indicator light 107 and USB interface 108 are all connected to the PCB board 103, and the outer wall of the shell 101 is concavely provided with a plurality of first heat dissipation grooves 1012, and the first heat dissipation grooves 1012 are arranged in a blind hole structure, and the upper end wall of the inner side of the first heat dissipation groove 1012 is respectively concavely provided with a The outer side of the rear end wall of the rear cover 102 is recessed with an open groove 1021 connected head to tail along the circumferential direction, and the outer side of the front end wall of the rear cover 102 is recessed with a plurality of second heat dissipation grooves 1022 along the circumferential direction, and the second heat dissipation grooves 1022 are all arranged in a blind hole structure, and the upper end wall of the second heat dissipation groove 1022 is provided with a second through groove 1023 connected to the open groove 1021, and the second through grooves 1023 are all located on the inner side wall of the open groove 1021.

[0023] Specifically, a through hole 1014 is recessed at the bottom of the accommodating groove 1011, and two first elastic arms 1091 are relatively protruded on the upper end wall of the support base 109. The first elastic arms 1091 are arranged in a circular arc curved structure, and a limiting flange 1092 is protruded on the upper end of the first elastic arm 1091. The first elastic arms 1091 are respectively embedded in the through hole 1014, and the limiting flange 1092 is respectively abutted against the upper end wall of the through hole 1014, and the first elastic arms 1091 are respectively abutted against the inner circumferential wall of the through hole 1014, so that the support base is more convenient to install and disassemble.

[0024] Specifically, one or two limiting columns 1093 are relatively protruded from the upper end wall of the support base 109. The limiting columns 1093 are respectively embedded in the through holes 1014, and the limiting columns 1093 are respectively abutted against the inner peripheral walls of the through holes 1014, playing a good limiting role.

[0025] Specifically, on both sides of the upper end of the support base 109, a second elastic arm 1094 is horizontally provided respectively. At the front end of each second elastic arm 1094, a limiting protrusion 1095 is convexly provided. Along the circumferential direction on the lower end wall of the through hole 1014, a plurality of limiting grooves 1015 are provided. The outer contours of the limiting protrusion 1095 and the limiting grooves 1015 are both arranged in an arc-shaped curved surface structure. The limiting protrusion 1095 is detachably embedded in the limiting groove 1015 to limit the position of the rotation of the support base and prevent the support base from loosening randomly.

[0026] Specifically, on both sides of the lower end wall of the housing 101, a first anti-slip silica gel pad 1016 is respectively embedded. On the lower end wall of the support base 109, a second anti-slip silica gel pad 1096 is embedded, which plays a role in anti-slip and makes the wireless screen mirroring device more stable when placed on the desktop.

[0027] Specifically, on the rear end wall of the rear cover 102, a plurality of arc-shaped supporting parts 1024 are convexly provided, which is convenient for the wireless screen mirroring device to be placed flat on the desktop.

[0028] Specifically, the built-in rechargeable battery uses a lithium polymer battery. The lithium polymer battery has the characteristics of high energy density, light weight and large capacity. It can realize an ultra-thin design, and has high safety, long service life, no memory effect, and can realize fast charging.

[0029] Specifically, both the housing 101 and the rear cover 102 are formed of aluminum alloy or magnesium alloy materials, making the housing more durable and having good heat conduction performance, which can further improve the heat dissipation performance of the housing.

[0030] Specifically, the wireless screen mirroring device of the present invention is based on Miracast / Airplay / DLNA / private screen mirroring protocol, and the screen on user devices such as mobile phones and computers is screen-mirrored to the display through a wireless WiFi connection.

[0031] On the other hand, as Figure 10 shown, the present invention also proposes a screen mirroring method for the rechargeable and portable wireless screen mirroring device according to the above, and the screen mirroring method includes the following steps: S100: Networking, the wireless screen mirroring device establishes a wireless connection with the user device through the WiFi P2P function. The user does not need to perform the networking operation by himself. As long as the user device has the Wi-Fi Display function, it can automatically network during screen mirroring; S200: Device discovery, the wireless screen mirroring device realizes the discovery of the user device through WiFi P2P; S300: Protocol configuration, the wireless screen mirroring device uses the RTSP protocol to negotiate the relevant configurations of the user device and the screen mirroring device, and controls the media data transmission; S400: Audio and video data transmission and encryption. The audio and video data is encapsulated into PES packets, then encrypted and protected using HDCP, further encapsulated into streaming media TS packets, and finally encapsulated into RTP packets, and transmitted through UDP / TCP protocols. S500: Reverse control. When mirroring the screen, the wireless screen mirroring device uses the UIBC protocol to reverse control the user device.

[0032] There are two types of UBIC: generic and HIDC. Generally, Android devices support generic, Win10 supports the HIDC protocol, and some mobile phones such as Honor phones default to support HIDC but also support generic.

[0033] Specifically, the present invention has the following advantages: 1. Improve portability: Integrating the charging and screen mirroring functions into one device reduces the carrying burden, especially suitable for users who need to work remotely and travel frequently.

[0034] 2. Simplify operation: Users can achieve charging and screen mirroring with only one device, with simple operation and convenient use.

[0035] 3. Improve efficiency: When conducting business presentations, education and training, or home entertainment, no additional power supply and screen mirroring device are required, improving the efficiency of work and entertainment.

[0036] 4. Applicable to multiple scenarios: The integrated device is applicable to various scenarios. Whether it is a meeting room, a classroom, or a home living room, it can provide convenient screen mirroring and charging services.

[0037] 5. Enhance battery life: The built-in high-capacity battery not only provides stable power support for the wireless screen mirroring module and the USB reverse control keyboard and mouse device, but also can charge other devices, enhancing the overall battery life.

[0038] 6. Good heat dissipation performance, which can effectively dissipate the excess heat inside the housing quickly, avoid the internal temperature rise of the housing being too high, ensure the performance stability of the wireless screen mirroring device, extend the service life, and at the same time prevent sundries from entering the housing.

[0039] 7. It can be placed vertically on the desktop through the support base for use, saving desktop space. When not in use, the support base can also be hidden and stored, which is convenient for carrying.

[0040] In summary, the rechargeable wireless screen mirroring device integrated with the rechargeable battery function brings significant convenience and practical value to users through technology integration and optimization, and has obvious advantages in portability, versatility, and usage efficiency.

[0041] Meanwhile, in the present invention, the function of using a USB keyboard and mouse to remotely control a user device during screen mirroring is realized. When a user is on a business trip, only the present invention and a mobile phone need to be carried, so that in any scenario, the user can start working by plugging in a keyboard and mouse without being affected by power supply or a small screen, without the need to carry a complete set of office equipment including a computer.

[0042] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A rechargeable and dischargeable portable wireless screen projector, characterized in that: The device comprises a shell, a back cover, a PCB board, a built-in rechargeable battery, an HDMI interface, a power interface, a switch button, a status indicator light, a USB interface and a support base. The back cover is detachably covered on the rear end of the shell. The PCB board and the built-in rechargeable battery are arranged in the shell. A main control chip, a wireless screen projection module, a WiFi module, a 5G module, a video hard decoder, a video output module and an audio output module are arranged on the PCB board. The HDMI interface and the power interface are arranged on the side wall of the shell. The switch button, the status indicator light and the USB interface are arranged on the other side wall of the shell. A receiving groove which can accommodate the support base is recessed at the lower end of the shell. The support base is rotatably embedded In the accommodating groove, the built-in rechargeable battery, HDMI interface, power interface, switch button, status indicator light and USB interface are all electrically connected to the PCB board, and the outer wall of the shell is recessed with a plurality of first heat dissipation grooves, and the first heat dissipation grooves are arranged in a blind hole structure, and the upper end walls on the inner sides of the first heat dissipation grooves are respectively recessed with a first through groove connected to the interior of the shell, and the outer side of the rear end wall of the rear cover is recessed with an open groove connected head to tail along the circumferential direction, and the outer side of the front end wall of the rear cover is recessed with a plurality of second heat dissipation grooves along the circumferential direction, and the second heat dissipation grooves are all arranged in a blind hole structure, and the upper end walls of the second heat dissipation grooves are each provided with a second through groove connected to the open groove, and the second through grooves are all located on the inner side walls of the open grooves.

2. The rechargeable and dischargeable portable wireless screen projector according to claim 1, characterized in that: A through hole is recessed at the bottom of the accommodating groove, and two first elastic arms are relatively protruded on the upper end wall of the supporting base. The first elastic arms are arranged in a circular arc curved structure, and a limiting flange is protruded on the upper end of each of the first elastic arms. The first elastic arms are respectively embedded in the through holes, and the limiting flanges are respectively abutted against the upper end wall of the through holes, and the first elastic arms are respectively abutted against the inner circumferential wall of the through holes.

3. The rechargeable and dischargeable portable wireless screen projector according to claim 2, characterized in that: One or two limiting columns are relatively protruded from the upper end wall of the support base, and the limiting columns are respectively embedded in the through holes, and the limiting columns are respectively in contact with the inner peripheral walls of the through holes.

4. The rechargeable and dischargeable portable wireless screen projector according to claim 2, characterized in that: A second elastic arm is horizontally provided on both sides of the upper end of the support seat, and a limiting protrusion is protruding from the front end of the second elastic arm. The lower end wall of the through hole is provided with a plurality of limiting grooves along the circumferential direction. The outer contours of the limiting protrusion and the limiting groove are both arranged in a circular arc curved surface structure, and the limiting protrusion is detachably embedded in the limiting groove.

5. The rechargeable and dischargeable portable wireless screen projector according to claim 1, characterized in that: A first anti-skid silicone pad is embedded on both sides of the lower end wall of the shell, and a second anti-skid silicone pad is embedded on the lower end wall of the support seat.

6. The rechargeable and dischargeable portable wireless screen projector according to claim 1, characterized in that: The shell and the back cover are both made of aluminum alloy or magnesium alloy.

7. The rechargeable and dischargeable portable wireless screen projector according to claim 1, characterized in that: A plurality of arc-shaped supporting parts are protruded from the rear end wall of the rear cover.

8. The rechargeable and dischargeable portable wireless screen projector according to claim 1, characterized in that: The built-in rechargeable battery is a lithium polymer battery.

9. A screen projection method of the rechargeable and dischargeable portable wireless screen projection device according to any one of claims 1 to 8, characterized in that: The screen projection method comprises the following steps: Networking: The wireless screen projection device establishes a wireless connection with the user's device through the WiFi P2P function. The user does not need to perform networking operations by himself. As long as the user's device has the Wi-Fi Display function, it can automatically form a network when projecting the screen; Device discovery: the wireless screen projector can discover user devices through WiFi P2P. Protocol configuration: the wireless screen projector uses the RTSP protocol to negotiate the configurations of the user device and the screen projector, and controls the transmission of media data; Audio and video data transmission and encryption: Encapsulate audio and video data into PES packets, encrypt and protect the content using HDCP, encapsulate them into streaming media TS packets, and finally encapsulate them into RTP packets and transmit them through UDP / TCP protocols; Reverse control: The wireless screen projector uses the UIBC protocol to achieve reverse control of the user device during screen projection.

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