Mobile phone secondary screen

Abstract

The utility model relates to the technical field of mobile phone accessories, and particularly discloses a mobile phone auxiliary screen, which comprises a shell, a display screen, a WIFI (Wireless Fidelity) module, a decoding control module and a power supply module. The display screen is embedded in the front face of the shell, and the WIFI module, the decoding control module and the power module are all arranged in the shell. A video interface, a mirror image projection screen key and a charging interface are arranged on the surface of the shell; and the charging interface, the mirror image projection screen key, the WIFI module, the display screen and the video interface are electrically connected with the decoding control module. The power supply module is used for supplying power to the display screen, the WIFI module and the decoding control module, and the charging interface is electrically connected with the power supply module. The mobile phone auxiliary screen can be used as an auxiliary screen to display pictures of a mobile phone, and also can transmit the pictures of the mobile phone to display equipment such as a television and the like in a physical transmission manner through the video interface, so that high-definition screen projection of the pictures of the mobile phone is realized. And the auxiliary screen can project the picture on a display device without a WIFI function for display.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone accessories technology, specifically to a secondary screen for mobile phones. Background Technology

[0002] As mobile phones become increasingly powerful, they are used not only for communication but also for entertainment and work in daily life. In entertainment or work, it's often necessary to project the phone screen onto a monitor, TV, or projector for a better experience. Current mobile screen mirroring methods typically involve the phone directly transmitting the video signal to the display device via Wi-Fi. This usually requires the display device to be connected to a Wi-Fi network, limiting the types of display devices that can be mirrored. Furthermore, due to the bandwidth and stability limitations of Wi-Fi networks, the transmitted image quality is often compressed to ensure smooth playback, thus impacting the work or entertainment experience. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a secondary screen for mobile phones that can physically transmit the mobile phone screen to the display device through a video interface, reduce the hardware requirements of the device that can project the screen, and improve the projection image quality.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: A secondary screen for a mobile phone includes a housing, a display screen, a WIFI module, a decoding control module, and a power module. The display screen is embedded in the front of the housing. The WIFI module, the decoding control module, and the power module are all disposed within the housing. The surface of the housing is provided with a video interface, a screen mirroring button, and a charging interface. The charging interface, the screen mirroring button, the WIFI module, the display screen, and the video interface are all electrically connected to the decoding control module. The power module supplies power to the display screen, the WIFI module, and the decoding control module. The charging interface is electrically connected to the power module.

[0005] Compared to existing technologies, the advantages of this invention are as follows: This secondary screen for mobile phones can receive video signals emitted by the mobile phone via a Wi-Fi module, and after decoding by a decoding control module, it is physically transmitted to a display device for projection display via a video interface. This secondary screen can act as a projection intermediary, projecting the mobile phone screen to a monitor without Wi-Fi network access, thereby reducing the hardware requirements of the display device for mobile phone projection. Furthermore, because the secondary screen can transmit the image to the display device via physical transmission, it can achieve lossless image quality transmission, improving display quality while ensuring image continuity, making it suitable for application scenarios with high image quality requirements.

[0006] The aforementioned secondary screen for a mobile phone includes a power module comprising a charging control circuit, a discharging control circuit, and a battery. Both the charging control circuit and the discharging control circuit are electrically connected to the battery. The charging control circuit is electrically connected to the charging interface. The discharging control circuit is electrically connected to the display screen, the WIFI module, and the decoding control module via a power conversion circuit.

[0007] The aforementioned secondary screen for mobile phones has a magnetic ring on the back side of its casing.

[0008] The video interface of the aforementioned secondary screen for mobile phones is an HDMI interface.

[0009] The aforementioned secondary screen for mobile phones includes a Lightning interface and a USB Type-C interface for charging.

[0010] The aforementioned secondary screen for mobile phones, including the charging control circuit and the discharging control circuit, supports PD and / or QC protocols.

[0011] In the aforementioned secondary screen of the mobile phone, the discharge control circuit is electrically connected to the charging interface.

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the secondary screen of a mobile phone according to an embodiment of the present utility model;

[0014] Figure 2 This is a top view of the secondary screen of a mobile phone according to an embodiment of the present utility model;

[0015] Figure 3 This is a rear view of the secondary screen of a mobile phone according to an embodiment of the present utility model;

[0016] Figure 4 This is a schematic block diagram of the secondary screen of a mobile phone according to an embodiment of the present utility model;

[0017] Figure 5 This is a schematic block diagram of the power module according to an embodiment of the present utility model.

[0018] Explanation of icon numbers:

[0019] 100 Housing, 110 Video Interface, 120 Screen Mirroring Button, 130 Lightning Interface, 140 USB Type-C Interface, 200 Display Screen, 300 Magnetic Ring. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below, with reference to Figure 1 , Figure 2 and Figure 4 This utility model provides a secondary screen for a mobile phone, including a housing 100, a display screen 200, a Wi-Fi module, a decoding control module, and a power module. The display screen 200 is embedded in the front of the housing 100, and the Wi-Fi module, decoding control module, and power module are all disposed within the housing 100. The surface of the housing 100 is provided with a video interface 110, a screen mirroring button 120, and a charging interface. The charging interface, screen mirroring button 120, Wi-Fi module, display screen 200, and video interface 110 are all electrically connected to the decoding control module. The power module supplies power to the display screen 200, Wi-Fi module, and decoding control module, and the charging interface is electrically connected to the power module.

[0021] This secondary screen for the mobile phone can receive video signals transmitted from the phone via a Wi-Fi module and decode them using a decoding control module before displaying them on the display screen 200, thus serving as a secondary screen for the phone. When taking photos or videos with the phone, this secondary screen can act as a monitor or viewfinder, allowing users to monitor the camera feed and adjust composition when taking selfies using the phone's rear HD camera. Simultaneously, when projecting the phone's image onto a larger display device, the secondary screen's video interface 110 can be connected to the display device via a video transmission cable. This allows the secondary screen to act as a projection intermediary. The decoding control module decodes the received phone image signal and physically transmits it to the display device via video interface 110, ensuring lossless image transmission while maintaining image continuity and display quality. This is suitable for projection applications with high image quality requirements. Furthermore, because the secondary screen physically transmits the phone's image to the display device, it can project the phone's image regardless of whether the display device has Wi-Fi access, reducing the hardware requirements for phone projection. In use, the user can activate the mirroring function via the mirroring button 120 on the side of the casing 100. The decoding control module mirrors the decoded image before projecting it onto the display device, ensuring that the projected image matches the actual image captured by the phone's camera. It is understood that in some embodiments, if high image quality and latency are required for the projected image, the phone can be directly connected to the secondary screen via the charging port, allowing the phone's image to be transmitted to the display device entirely through physical means.

[0022] It is understood that in some embodiments, in addition to the mirroring button 120, the surface of the housing 100 also has a power button and other function buttons to activate the secondary screen and perform other functions such as remote camera control. The functions of the other function buttons can also be customized by software to further expand the application scenarios of the secondary screen.

[0023] Reference Figure 3 In some embodiments, a magnetic ring 300 is provided on the back side of the housing 100 so that the secondary screen can be magnetically fixed to the back of the phone, making it more convenient for users to monitor the images captured by the phone's camera through the secondary screen fixed to the back of the phone, and making it easier for users to use the wide-angle or telephoto modes of the phone's rear camera to make more creative selfie compositions.

[0024] Reference Figure 5 In this embodiment, the power module includes a charging control circuit, a discharging control circuit, and a battery. Both the charging and discharging control circuits are electrically connected to the battery. The charging control circuit is electrically connected to the charging interface. The discharging control circuit is electrically connected to the display screen 200, the WIFI module, and the decoding control module via a power conversion circuit. The charging control circuit controls the process of external electrical energy charging the battery. The discharging control circuit converts the electrical energy in the battery into a stable voltage. The power conversion circuit converts the stable voltage released by the discharging control circuit into the voltage required for the WIFI module, decoding control module, and display screen 200 to operate, thereby driving the WIFI module, decoding control module, and display screen 200. It is understood that in some embodiments, the discharging control circuit may also be electrically connected to the charging interface, allowing the secondary screen of the phone to supply power to other electronic devices through the charging interface in emergencies, serving as an emergency power source or power bank. The charging and discharging control circuits preferably support one or more fast charging protocols such as PD and QC to improve the charging efficiency of the secondary screen of the phone.

[0025] Reference Figure 1 In this embodiment, the bottom surface of the housing 100 is provided with two charging ports: a USB Type-C port 140 and a Lightning port 130, allowing the secondary screen of the phone to be charged using most commercially available mobile phone charging cables. It is understood that the video interface 110 can be a VGA interface, a DVI interface, or an HDMI interface, etc., as shown in the reference... Figure 2 In this embodiment, the video interface 110 adopts the widely used HDMI interface.

[0026] It is understandable that the WIFI module can use a WIFI chip such as the RTL8731BU, and the decoding controller can use a GPU or an APU with an integrated discrete graphics core. The specific structures of the charging control circuit, discharging control circuit, and power conversion circuit are common knowledge in this field and will not be described in detail here.

[0027] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0028] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A secondary screen for a mobile phone, characterized in that, The device includes a housing (100), a display screen (200), a WIFI module, a decoding control module, and a power module. The display screen (200) is embedded in the front of the housing (100). The WIFI module, the decoding control module, and the power module are all located inside the housing (100). The surface of the housing (100) is provided with a video interface (110), a screen mirroring button (120), and a charging interface. The charging interface, the screen mirroring button (120), the WIFI module, the display screen (200), and the video interface (110) are all electrically connected to the decoding control module. The power module is used to supply power to the display screen (200), the WIFI module, and the decoding control module. The charging interface is electrically connected to the power module.

2. The secondary screen for a mobile phone according to claim 1, characterized in that, The power module includes a charging control circuit, a discharging control circuit, and a battery. The charging control circuit and the discharging control circuit are both electrically connected to the battery. The charging control circuit is electrically connected to the charging interface. The discharging control circuit is electrically connected to the display screen (200), the WIFI module, and the decoding control module through a power conversion circuit.

3. The secondary screen for a mobile phone according to claim 1, characterized in that, A magnetic ring (300) is provided on the back side of the housing (100).

4. The secondary screen for a mobile phone according to claim 1, characterized in that, The video interface (110) is an HDMI interface.

5. The secondary screen for a mobile phone according to claim 1, characterized in that, The charging interface includes a Lightning interface (130) and a USB Type-C interface (140).

6. The secondary screen for a mobile phone according to claim 2, characterized in that, The charging control circuit and the discharging control circuit support PD and / or QC protocols.

7. The secondary screen for a mobile phone according to claim 2, characterized in that, The discharge control circuit is electrically connected to the charging interface.

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