A dual breath hold screen device

Abstract

The application belongs to the technical field of screen-off control, and relates to a double-screen screen-off device, which comprises a first screen, a second screen, a screen-off detection circuit and a screen-off control circuit. The first screen and the second screen are connected with the screen-off detection circuit, and the first screen and the second screen are also connected with the screen-off control circuit. The screen-off detection circuit is connected with the screen-off control circuit. When the screen-off detection circuit detects the screen-off demand of the first screen and / or the second screen, a screen-off signal is sent to the screen-off control circuit, and the screen-off control circuit controls the first screen and / or the second screen to realize screen-off. A first Hall inductor is arranged on the first screen. The screen-off detection circuit detects the state of the first Hall inductor and judges whether there is a screen-off demand. The application can realize the individual screen-off of the double screens.

Description

Technical Field

[0001] This application relates to the field of screen-off control technology, and in particular to a dual-screen screen-off device. Background Technology

[0002] With the continuous development of computer technology, increasingly diverse display terminals have entered people's lives, such as computers, tablets, and mobile phones. Currently, some display devices enter a standby state when not in use for a period of time. Display devices in standby state automatically turn off the display screen, thus protecting the content displayed by devices in non-working state (without human input commands), reducing unnecessary information leakage, and also reducing unnecessary power consumption waste.

[0003] In existing technologies, device screen-off methods are generally categorized into two types: static screen-off, where the device enters a screen-off state when there is no control signal input for a period of time; and dynamic screen-off, where the display device has a screen-off button, and the device enters a screen-off state when the button is pressed.

[0004] However, both of the above methods have their own drawbacks:

[0005] 1) The static screen-off mode cannot determine the initial time point as needed, and cannot turn off the screen completely according to the user's needs. In addition, the static screen-off mode requires the operating system or software of the device to support it. Currently, some domestic systems cannot turn off the screen if they do not support it.

[0006] 2) The dynamic screen-off mode is prone to accidental operation, that is, the operator may accidentally enter the screen-off state by accidentally touching the screen-off button;

[0007] 3) Both of the above methods of controlling the screen off can only control a single screen to turn off at the same time or multiple screens to turn off at the same time. They cannot achieve the goal of turning off multiple screens individually without affecting each other. Summary of the Invention

[0008] Therefore, it is necessary to provide a dual-screen always-on device that can turn off both screens individually, addressing the aforementioned technical issues.

[0009] A dual-screen always-on device includes: a first screen, a second screen, a always-on detection circuit, and a always-on control circuit;

[0010] Both the first screen and the second screen are connected to the screen-off detection circuit, and both the first screen and the second screen are also connected to the screen-off control circuit. The screen-off detection circuit is connected to the screen-off control circuit.

[0011] When the screen-off detection circuit detects a screen-off requirement for the first screen and / or the second screen, it sends a screen-off signal to the screen-off control circuit, which then controls the first screen and / or the second screen to turn off.

[0012] In one embodiment, the first screen is provided with a first Hall sensor;

[0013] The screen-off detection circuit detects the state of the first Hall sensor and determines whether there is a need to turn off the screen.

[0014] In one embodiment, the first Hall sensor generates a changing level when the first screen is turned off, as a screen-off requirement.

[0015] In one embodiment, the first screen includes: a first cover plate and a first panel;

[0016] The first cover plate is provided with a first magnet or a first Hall sensor, and the first panel is provided with a first Hall sensor or a first magnet;

[0017] When the first screen is off, the first magnet attracts the first Hall sensor, causing the first Hall sensor to generate a changing voltage level.

[0018] In one embodiment, the first screen and the second screen are further provided with backlights;

[0019] After receiving the screen-off signal, the screen-off control circuit controls the backlight of the first screen and / or the second screen to turn off, thereby turning off the screen of the first screen and / or the second screen.

[0020] In one embodiment, the screen-off control circuit includes a CPU processor and a chip, wherein the CPU processor detects the screen-off signal through an I / O port and controls the first screen and / or the second screen.

[0021] In one embodiment, the first Hall sensor is a normally open Hall sensor.

[0022] In one embodiment, the first screen and the second screen have exactly the same structure.

[0023] The aforementioned dual-screen always-on device is designed with a screen-off detection circuit and a screen-off control circuit, which can control the first screen and the second screen individually or jointly. It supports both screens to be off at the same time as each screen, as well as both screens to be off individually (if one screen is off, the other screen will not be affected). It also supports screen-off individually when the device's operating system or software does not have a screen-off function, making it particularly suitable for portable laptops or industrial computers. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a dual-screen always-on device in one embodiment;

[0025] Figure 2 This is a CPU circuit design diagram of the screen-off control circuit in one embodiment;

[0026] Figure 3 This is a design diagram of the screen backlight circuit of the screen-off control circuit in one embodiment;

[0027] Figure 4 This is a circuit design diagram of the screen-off detection circuit in one embodiment;

[0028] Figure 5 This is a schematic diagram of the first and second screens in one embodiment;

[0029] Figure 6 This is a schematic diagram of Hall sensors and magnets on the first and second screens in one embodiment;

[0030] Figure 7 This is a schematic diagram of any single screen being turned off in one embodiment;

[0031] Figure 8 This is a schematic diagram of two screens being turned off simultaneously in one embodiment.

[0032] Figure label:

[0033] First cover plate 11, first panel 12, first magnet 13, first Hall sensor 14;

[0034] Second cover plate 21, second panel 22. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, "multiple sets" means at least two sets, such as two sets, three sets, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0040] This application provides a dual-screen always-on device, such as... Figure 1 As shown, in one embodiment, it includes: a first screen, a second screen, a screen-off detection circuit, and a screen-off control circuit.

[0041] The first screen (i.e., screen 1) is connected to both the screen-off detection circuit and the screen-off control circuit. The first screen includes: a first cover plate and a first panel; the first cover plate is provided with a first magnet or a first Hall sensor, the first panel is provided with a first Hall sensor or a first magnet, and the first cover plate and / or the first panel is also provided with a backlight.

[0042] The second screen (i.e., screen 2) is connected to both the screen-off detection circuit and the screen-off control circuit. The second screen includes a second cover plate and a second panel; the second cover plate is provided with a second magnet or a second Hall sensor, the second panel is provided with a second Hall sensor or a second magnet, and the second cover plate and / or the second panel are also provided with a backlight.

[0043] The screen-off detection circuit is connected to the first screen, the second screen, and the screen-off control circuit.

[0044] The screen-off control circuit is connected to the first screen, the second screen, and the screen-off detection circuit.

[0045] In this embodiment, when the screen-off detection circuit detects the screen-off requirement of the first screen and / or the second screen, it sends a screen-off signal to the screen-off control circuit, and the screen-off control circuit controls the first screen and / or the second screen to turn off.

[0046] Specifically: The screen-off detection circuit monitors the state of the first Hall sensor and the second Hall sensor in real time and determines whether there is a screen-off requirement; when the first screen (and / or the second screen) is turned off, the first magnet attracts the first Hall sensor (and / or the second magnet attracts the second Hall sensor), causing the first Hall sensor (and / or the second Hall sensor) to generate a changing level, which serves as a screen-off requirement for the first screen (and / or the second screen); after detecting the screen-off requirement of the first screen (and / or the second screen), the screen-off detection circuit sends a screen-off signal to the screen-off control circuit; after receiving the screen-off signal, the screen-off control circuit controls the backlight of the first screen (and / or the second screen) to turn off, thereby realizing the screen-off of the first screen (and / or the second screen).

[0047] In one embodiment, the screen-off control circuit includes a CPU processor and a chip. The CPU processor detects the screen-off signal through an I / O port and controls the first screen and / or the second screen.

[0048] In one embodiment, the first Hall sensor is a normally open Hall sensor.

[0049] The aforementioned dual-screen always-on device is designed with a screen-off detection circuit and a screen-off control circuit, which can control the first screen and the second screen individually or jointly. It supports both screens to be off at the same time as each screen, as well as both screens to be off individually (if one screen is off, the other screen will not be affected). It also supports screen-off individually when the device's operating system or software does not have a screen-off function, making it particularly suitable for portable laptops or industrial computers.

[0050] In one specific embodiment, the screen-off control circuit uses a China Electronics Technology Group Corporation (CETC) CS32F103 CPU processor and an AMEC AiP706 watchdog chip to ensure system stability. The CPU detects the circuit state of the Hall sensor (i.e., Hall effect sensor) through the I / O port to control the backlight enable pin of the screen to achieve dual-screen screen-off functionality. When the CPU detects a change in the Hall sensor's level, it controls the backlight of the corresponding screen to turn off, thus achieving the screen-off operation. The CPU circuit design is as follows: Figure 2 As shown, the screen backlight circuit design is as follows: Figure 3 As shown. In the prior art, the circuit is directly connected to the graphics card of the computer motherboard, and the screen-off status can only be controlled by the motherboard CPU and operating system; however, in the control circuit of this application, the DP display backlight switch pin of the first screen and second screen display circuit is connected to the graphics card. Figure 3The EC_BL1_ON and EC_BL2_ON are connected separately and do not go through the computer motherboard's graphics card. In other words, the circuit of this application is independent of the computer motherboard and uses an independent domestic CPU to control and detect the screen-off state. It does not need to rely on the computer motherboard and operating system for control.

[0051] The screen-off detection circuit uses the Shanghai NJK-5001A, a DC 3-wire, PNP normally open Hall sensor, which features high recognition accuracy, fast response, and anti-interference capabilities, and can also prevent accidental operation. When the screen-off detection circuit detects that the cover of either of the dual screens is closed, the Hall sensor shows a high-low level change. After the CPU recognizes this, it controls the backlight of the DP display to turn off, thus controlling the backlight of the corresponding screen to turn off, achieving independent screen-off operation for both screens. The specific circuit design is as follows: Figure 4 As shown.

[0052] The first and second screens can be designed on the front and back of the device respectively, using the same design, both including a cover and a panel, such as... Figure 5 As shown; Hall sensors are installed on the lower right side of the corresponding panels of the first and second screens, and magnets are installed on the upper right side of the corresponding cover plates of the first and second screens, such as... Figure 6 As shown; when the screen is off, the magnet S-pole overlaps with the Hall sensor; either the first cover or the second cover can be closed independently to achieve screen-off functionality for any single screen, such as... Figure 7 As shown; it is also possible to close both the first and second cover plates simultaneously to achieve simultaneous screen-off for both screens, as shown. Figure 8 As shown.

[0053] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0054] 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.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dual-screen always-on device, characterized in that, include: The system comprises a first screen, a second screen, a screen-off detection circuit, and a screen-off control circuit. Both the first screen and the second screen are connected to the screen-off detection circuit, and both the first screen and the second screen are also connected to the screen-off control circuit. The screen-off detection circuit is connected to the screen-off control circuit. When the screen-off detection circuit detects the screen-off requirement of the first screen and / or the second screen, it sends a screen-off signal to the screen-off control circuit, and the screen-off control circuit controls the first screen and / or the second screen to turn off. The control circuit is independent of the computer motherboard to control and detect the screen-off state, and does not rely on the computer motherboard and operating system for control; The first and second screens are designed on the front and back of the device, respectively, and adopt the same design, both including a cover and a panel. Hall sensors are installed at corresponding positions on the corresponding panels of the first and second screens, and magnets are installed at corresponding positions on the corresponding covers of the first and second screens. When the screen is off, the magnets overlap with the Hall sensors. Closing the first or second cover alone can turn off any single screen. Closing both the first and second covers at the same time can turn off both screens simultaneously.

2. The dual-screen always-on device according to claim 1, characterized in that, The first screen includes: a first cover plate and a first panel; The first cover plate is provided with a first magnet or a first Hall sensor, and the first panel is provided with a first Hall sensor or a first magnet; When the first screen is off, the first magnet attracts the first Hall sensor, causing the first Hall sensor to generate a changing voltage level.

3. The dual-screen always-on device according to claim 2, characterized in that, The first screen and the second screen are also equipped with backlights; After receiving the screen-off signal, the screen-off control circuit controls the backlight of the first screen and / or the second screen to turn off, thereby turning off the screen of the first screen and / or the second screen.

4. A dual-screen always-on device according to any one of claims 1 to 3, characterized in that, The screen-off control circuit includes a CPU processor and a chip. The CPU processor detects the screen-off signal through an I / O port and controls the first screen and / or the second screen.

5. A dual-screen always-on device according to claim 2 or 3, characterized in that, The first Hall sensor is a normally open Hall sensor.

6. A dual-screen always-on device according to any one of claims 1 to 3, characterized in that, The first screen and the second screen have the same structure.

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