Open the cover to start the circuit and electronic equipment

Abstract

The embodiment of the present application discloses a cover-opening power-on circuit and electronic equipment, belonging to the field of power electronics technology. The cover-opening power-on circuit includes: a conversion unit, a control unit and a logic unit; the input end of the conversion unit is connected to the cover-opening action signal, the output end of the conversion unit is electrically connected to the first input end of the logic unit, the output end of the control unit is electrically connected to the second input end of the logic unit, and the output end of the logic unit is electrically connected to the power supply circuit; the conversion unit is used to convert the cover-opening action signal into a pulse signal, the control unit is used to output the control signal, and the logic unit is used to generate a logic signal according to the pulse signal and the control signal, and output the logic signal to the power supply circuit. The embodiment of the present application at least solves the technical problem of how to realize the cover-opening power-on function without the need for an EC chip.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of power electronics technology, and in particular to a cover-opening power-on circuit and an electronic device. Background Art

[0002] At present, traditional laptops basically have the function of turning on the computer by opening the lid, and this function can also be configured in the system settings. This is because traditional laptops have a dedicated EC (Embedded Controller) chip, and this function of turning on the computer by opening the lid is realized through the EC chip.

[0003] However, the architecture of cloud laptops is completely different from that of traditional laptops. One of the differences is that cloud laptops do not have EC chips, which means that cloud laptops cannot realize the open-lid power-on function that relies on EC chips like traditional laptops. Therefore, how to realize the open-lid power-on function without the need for EC chips is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The main purpose of the embodiments of the present application is to provide a cover-opening power-on circuit and an electronic device, aiming to at least solve the technical problem of how to realize the cover-opening power-on function without the need for an EC chip and enable the function to support custom configuration.

[0005] To achieve the above-mentioned purpose, an embodiment of the present application provides a cover-opening power-on circuit, the cover-opening power-on circuit comprising: a conversion unit, a control unit and a logic unit;

[0006] The input end of the conversion unit receives the cover opening action signal, the output end of the conversion unit is electrically connected to the first input end of the logic unit, the output end of the control unit is electrically connected to the second input end of the logic unit, and the output end of the logic unit is electrically connected to the power supply circuit;

[0007] The conversion unit is used to convert the cover opening action signal into a pulse signal, the control unit is used to output a control signal, and the logic unit is used to generate a logic signal according to the pulse signal and the control signal, and output the logic signal to the power supply circuit.

[0008] In addition, to achieve the above-mentioned purpose, an embodiment of the present application also provides an electronic device, which includes an action unit, a power supply circuit and the cover-opening power-on circuit as described above, wherein the cover-opening power-on circuit is respectively connected to the action unit and the power supply circuit, and the cover-opening power-on circuit is used to output a logic signal to the power supply circuit according to the cover-opening action signal when receiving the cover-opening action signal from the action unit, so as to power on the power supply circuit.

[0009] The embodiment of the present application proposes a cover-opening power-on circuit and an electronic device, which overcomes the problem that the cover-opening power-on function in the related art must rely on the EC chip. The cover-opening power-on circuit includes: a conversion unit, a control unit and a logic unit; the input end of the conversion unit is connected to the cover-opening action signal, the output end of the conversion unit is electrically connected to the first input end of the logic unit, the output end of the control unit is electrically connected to the second input end of the logic unit, and the output end of the logic unit is electrically connected to the power circuit; the conversion unit is used to convert the cover-opening action signal into a pulse signal, the control unit is used to output the control signal, and the logic unit is used to generate a logic signal according to the pulse signal and the control signal, and output the logic signal to the power circuit. The embodiment of the present application does not need to transmit the level signal for powering on to the power circuit through the EC chip, but simulates the level signal for powering on triggered by a key through the coordinated action of the conversion unit, the control unit and the logic unit, so that electronic devices without EC chips can also realize the cover-opening power-on function, effectively reducing the hardware cost of configuring the EC chip, and reducing the development and maintenance of EC software. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0011] Figure 1 A schematic diagram of a circuit for starting the computer by opening the cover provided in an embodiment of the present application;

[0012] Figure 2 A schematic diagram of the structure of a conversion unit in a cover-opening and power-on circuit provided in an embodiment of the present application;

[0013] Figure 3 A schematic diagram of the structure of a control unit in a cover-opening and power-on circuit provided in an embodiment of the present application;

[0014] Figure 4 A control signal output logic diagram of a cover-opening and power-on circuit provided in an embodiment of the present application;

[0015] Figure 5 A schematic diagram of the structure of a D flip-flop included in a control unit in a cover-opening power-on circuit provided in an embodiment of the present application;

[0016] Figure 6 A schematic diagram of the structure of a logic unit in a cover-opening and power-on circuit provided in an embodiment of the present application;

[0017] Figure 7A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0018] The realization of the purpose, functional features and advantages of the embodiments of the present application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0019] Description of Figure Numbers:

[0020] 10. Conversion unit; 20. Control unit; 30. Logic unit; R0, adjustable resistor; C0, adjustable capacitor; VT1, transistor; R1, pull-down resistor; R2, pull-up resistor; GND, power ground; VCC, power supply voltage; 21. Processor; 22. Digital logic device. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0022] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, in the embodiments of the present application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the meaning of "and / or" appearing in the full text is to include three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0024] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0025] It should also be understood that the references to "one embodiment" or "some embodiments" described in the specification of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0026] At present, traditional laptops basically have the function of turning on the computer by opening the lid, and this function can also be configured in the system settings. This is because traditional laptops have a dedicated EC (Embedded Controller) chip, and this function of turning on the computer by opening the lid is realized through the EC chip.

[0027] However, with the development of technology, the architecture of laptops is also gradually changing. Take cloud laptops as an example. One of the differences between cloud laptops and traditional laptops is that cloud laptops do not have EC chips, which means that cloud laptops cannot realize the open-lid power-on function that relies on EC chips like traditional laptops. Therefore, how to realize the open-lid power-on function without the EC chip is a technical problem that needs to be solved urgently.

[0028] Based on this, the embodiment of the present application provides a cover-opening power-on circuit and electronic device. It is not necessary to transmit the power-on level signal to the power supply circuit through the EC chip, but through the coordinated action of the conversion unit, the control unit and the logic unit, the button-triggered power-on level signal is simulated, so that electronic devices that do not have an EC chip can also realize the cover-opening power-on function, which effectively reduces the hardware cost of configuring the EC chip and reduces the development and maintenance of the EC software.

[0029] The cover-opening power-on circuit and electronic device provided in the embodiments of the present application are specifically described through the following embodiments. First, the cover-opening power-on circuit in the embodiments of the present application is described.

[0030] The present application embodiment provides a cover-opening power-on circuit, referring to Figure 1 , Figure 1 This is a schematic diagram of a cover-opening power-on circuit provided in an embodiment of the present application, wherein the cover-opening power-on circuit comprises: a conversion unit 10, a control unit 20 and a logic unit 30;

[0031] The input end of the conversion unit 10 receives the cover opening action signal, the output end of the conversion unit 10 is electrically connected to the first input end of the logic unit 30, the output end of the control unit 20 is electrically connected to the second input end of the logic unit 30, and the output end of the logic unit 30 is electrically connected to the power circuit;

[0032] The conversion unit 10 is used to convert the cover opening action signal into a pulse signal, the control unit 20 is used to output a control signal, and the logic unit 30 is used to generate a logic signal according to the pulse signal and the control signal, and output the logic signal to the power circuit.

[0033] The cover-opening power-on circuit provided in this embodiment is mainly used in electronic devices that do not include EC chips, such as cloud laptops with ARM architecture, traditional X86 architecture laptops and other electronic devices.

[0034] In this embodiment, the cover opening action signal may come from an action unit connected to the cover opening and powering-on circuit, and the action unit may be a magnetic switch on the mainboard, which is used to detect the opening and closing state of the upper cover of the notebook. A magnet is generally provided under the display screen of the notebook computer. When the cover is closed, the magnet approaches, and the action unit outputs a low level; when the cover is opened, the magnet moves away, and the action unit outputs a high level. When the level signal output by the action unit changes from a low level to a high level, it is considered that the action unit has outputted the cover opening action signal.

[0035] In this embodiment, the conversion unit 10 can convert the cover opening action signal that changes from a low level to a high level into a low pulse signal. This low pulse signal is equivalent to simulating a key signal generated when the power button is manually pressed and then released. In this way, as long as this low pulse signal is transmitted to the power supply circuit for receiving the key signal, it can achieve the same effect as the EC chip outputting the level signal for powering on to the power supply circuit, so that the electronic device using the cover opening power on circuit can also realize the cover opening power on function without relying on the EC chip control.

[0036] It is understandable that if the output end of the conversion unit 10 is directly electrically connected to the input end of the power supply circuit, the cover-opening power-on function will always be in the on state. However, in some application scenarios, the user may not need to enable the cover-opening power-on function. Therefore, it is necessary to enable the cover-opening power-on function to support user-defined configuration, that is, to choose to turn it on or off by the user. To this end, the present embodiment further provides a control unit 20 and a logic unit 30 in the cover-opening power-on circuit. Through the joint action of the two, it can be selected whether to output the pulse signal output by the conversion unit 10 to the power supply circuit, thereby realizing the customized configuration of the cover-opening power-on function.

[0037] In this embodiment, the control signal output by the control unit 20 and the pulse signal output by the conversion unit 10 are input into the logic unit 30. The logic unit 30 generates a logic signal based on the control signal and the pulse signal according to its own processing logic, and then outputs the logic signal to the power supply circuit. In this way, the user can determine whether the generated logic signal is consistent with the pulse signal by changing the level of the control signal. When the logic signal is consistent with the pulse signal, the power supply circuit is equivalent to receiving a level signal for powering on, and the cover-opening power-on function is considered to be turned on. On the contrary, when the logic signal is inconsistent with the pulse signal, the power supply circuit cannot power on the device according to the logic signal, and the cover-opening power-on function is considered to be turned off.

[0038] The present embodiment provides a cover-opening power-on circuit, in which the control unit 20 that plays a controlling role is completely different from the EC chip in the related art, and it cannot directly send a level signal for powering on to the power supply circuit. The solution for realizing the cover-opening power-on function in the present embodiment is based on the coordinated action of the conversion unit 10, the control unit 20 and the logic unit 30 to simulate the level signal for powering on triggered by a button, so that electronic devices that do not have an EC chip can also realize the cover-opening power-on function, and the user can choose whether to enable this function. The present embodiment reduces the hardware cost of configuring the EC chip and can save the development and maintenance of the EC software.

[0039] Reference Figure 2 In some feasible embodiments, the conversion unit 10 includes: an adjustable resistor R0, an adjustable capacitor C0, a transistor VT1, a pull-down resistor R1 and a pull-up resistor R2;

[0040] The first end of the adjustable resistor R0 is connected to the cover opening action signal, the second end of the adjustable resistor R0 is electrically connected to the first end of the adjustable capacitor C0, the second end of the adjustable capacitor C0 is electrically connected to the first end of the transistor VT1 and the first end of the pull-down resistor R1, the second end of the pull-down resistor R1 and the second end of the transistor VT1 are grounded, the third end of the transistor VT1 is electrically connected to the first input end of the logic unit and the first end of the pull-up resistor R2, and the second end of the pull-up resistor R2 is connected to the power supply voltage VCC.

[0041] In this embodiment, the action unit for providing the cover opening action signal to the conversion unit 10 can be implemented by using a Hall switch, and the conversion unit 10 can be implemented by Figure 2 The adjustable resistor R0, adjustable capacitor C0, transistor VT1, pull-down resistor R1 and pull-up resistor R2 are shown in the figure to realize; when the HALL_OUT output by the Hall switch changes from a low level to a high level, it is regarded that the Hall switch has output a cover opening action signal, and the signal charges the adjustable capacitor C0 through the adjustable resistor R0. Utilizing the charging and discharging principle of the capacitor, the charging pulse of the adjustable capacitor C0 is used to open the transistor VT1, and the pulse signal HALL_PUSLE is output.

[0042] In practical applications, the output pulse width can be adjusted by setting different resistance values ​​and capacitance values ​​for the adjustable resistor R0 and the adjustable capacitor C0, thereby achieving a conversion effect that meets actual needs.

[0043] As an example, when the adjustable resistance R0 is set to 2.21 KΩ and the adjustable capacitance C0 is set to 2.2 uF, the pulse width of the pulse signal output by the conversion unit 10 is about 200 ms.

[0044] Reference Figure 3 In some feasible embodiments, the control unit 20 includes: a processor 21 and a digital logic device 22;

[0045] The processor 21 is connected to an input terminal of the digital logic device 22 , and an output terminal of the digital logic device 22 is electrically connected to a second input terminal of the logic unit 30 .

[0046] In this embodiment, the control unit 20 is used to control the opening or closing of the cover opening and powering-on function. In the absence of EC control, this function can also be customized by the user.

[0047] As an example, the processor 21 can be a CPU or other processor with similar functions, which is not limited in this embodiment; the CPU can control the input signal of the digital logic device 22 through GPIO (General-purpose input / output), thereby changing the output signal generated by the digital logic device 22 based on the input signal.

[0048] In addition, the control unit 20 may also be implemented using a single chip microcomputer with similar functions, which is not limited in this embodiment.

[0049] Reference Figure 4 and Figure 5 In some feasible embodiments, the digital logic device 22 is a D flip-flop.

[0050] In this embodiment, the digital logic device 22 can be a D flip-flop with a latching function. When the processor 21 takes the CPU as an example, it can control the input D and CLK signals of the D flip-flop through two GPIOs. The truth table of the D flip-flop can be understood with reference to the following Table 1: when the CPU gives D a low level 0 and gives CLK a rising edge, the output Q is 0; when the CPU gives D a high level 1 and gives CLK a rising edge, the output Q is 1.

[0051] Table 1D flip-flop truth table

[0052]

[0053] The circuit structure of a D flip-flop is as follows Figure 5 As shown, the set signal PRE* and the clear signal CLR* are pulled up to the power supply voltage VCC through resistors respectively, which is consistent with the truth table in Table 1. OPEN_LID_CLK and OPEN_LID_D are controlled by two GPIOs of the CPU to achieve software configurability, and the OPEN_LID_Q output by the D flip-flop is the control signal in the above embodiment.

[0054] In some feasible embodiments, the digital logic device 22 is a D-type latch.

[0055] In this embodiment, the digital logic device 22 can also use a D-type latch with a function similar to that of a D flip-flop. In the absence of a special signal to lock the output of the D-type latch, the output signal of the D-type latch will directly follow the changes in the input signal, that is, when the CPU gives D a low level 0, the output Q is 0; when the CPU gives D a high level 1, the output Q is 1.

[0056] Reference Figure 6In some feasible embodiments, the above-mentioned logic unit 30 is an OR gate. When the control signal is at a low level, the level of the logic signal is consistent with that of the pulse signal, and the power circuit is powered on.

[0057] In some feasible embodiments, the logic unit 30 is an OR gate. When the control signal is at a high level, the levels of the logic signal and the pulse signal are inconsistent, and the power circuit is not powered on.

[0058] In this embodiment, when the logic unit 30 is a logic OR gate, combined with the above embodiments, it can be known that if it is necessary to enable the cover-opening power-on function, the CPU only needs to control D and CLK after powering on to make the D flip-flop output a low level 0; if it is necessary to disable the cover-opening power-on function, the CPU only needs to control D and CLK after powering on to make the D flip-flop output a high level 1; this control method is simple and can be controlled by a CPU of any architecture. By utilizing the latching function of the D flip-flop, the output state can be maintained as long as the D flip-flop is turned off without losing power, so the set state can also be locked after shutdown.

[0059] The circuit structure of the logic OR gate is as follows Figure 6 As shown, Figure 6 The circuit structure related to the power button S1 is also included. Figure 6 It can be seen that the pulse signal HALL_PUSLE and the control signal OPEN_LID_Q are ORed through diodes VD3 and VD4, transistors VT2 and VT3 play an isolation role, and the output ends of the logic OR gate are respectively connected to the power supply circuit (not shown in the figure) and the output end of the power button S1.

[0060] It should be noted that, when the pulse signal is obtained based on the conversion of the cover opening action signal and the control signal is at a low level, the PWRON output by the logic OR gate is equivalent to the PWRON output after the power button S1 is pressed. Both can power on the power circuit, thereby turning on the device.

[0061] In some feasible embodiments, the logic unit 30 is an AND gate. When the control signal is at a high level, the levels of the logic signal and the pulse signal are consistent, and the power circuit is powered on.

[0062] In some feasible embodiments, the logic unit 30 is an AND gate. When the control signal is at a low level, the levels of the logic signal and the pulse signal are inconsistent, and the power circuit is not powered on.

[0063] It can be understood that when the logic unit 30 is a logic AND gate, combined with the above embodiments, if it is necessary to enable the cover-opening power-on function, the CPU only needs to control D and CLK after powering on so that the D flip-flop outputs a high level 1; if it is necessary to disable the cover-opening power-on function, the CPU only needs to control D and CLK after powering on so that the D flip-flop outputs a low level 0.

[0064] In addition, the present application also provides an electronic device, referring to Figure 7 The electronic device includes an action unit, a power supply circuit and the cover-opening power-on circuit provided in the above embodiment. The cover-opening power-on circuit is respectively connected to the action unit and the power supply circuit. The cover-opening power-on circuit is used to output a logic signal to the power supply circuit according to the cover-opening action signal when receiving the cover-opening action signal from the action unit, so as to power on the power supply circuit.

[0065] Those skilled in the art will understand that Figure 7 The structure shown in the figure does not constitute a limitation on the electronic device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0066] The electronic device proposed in this embodiment and the cover-opening power-on circuit proposed in the above embodiments belong to the same technical concept. The technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as the above embodiments of the cover-opening power-on circuit.

[0067] It should be noted that the technical solutions of the various embodiments of the embodiments of the present application can be combined with each other, but it must be based on the fact that they can be implemented by technical personnel in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the embodiments of the present application.

[0068] The above are only optional embodiments of the embodiments of the present application, and do not limit the patent scope of the embodiments of the present application. Any equivalent structure or equivalent process transformation made using the description and drawings of the embodiments of the present application, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the embodiments of the present application.

Claims

1. A cover-opening power-on circuit, characterized in that: The cover opening and powering-on circuit comprises: a conversion unit, a control unit and a logic unit; The input end of the conversion unit receives the cover opening action signal, the output end of the conversion unit is electrically connected to the first input end of the logic unit, the output end of the control unit is electrically connected to the second input end of the logic unit, and the output end of the logic unit is electrically connected to the power supply circuit; The conversion unit is used to convert the cover opening action signal into a pulse signal, the control unit is used to output a control signal, and the logic unit is used to generate a logic signal according to the pulse signal and the control signal, and output the logic signal to the power supply circuit.

2. The cover-opening power-on circuit according to claim 1, characterized in that: The conversion unit includes: an adjustable resistor, an adjustable capacitor, a transistor, a pull-down resistor and a pull-up resistor; The first end of the adjustable resistor is connected to the cover opening action signal, the second end of the adjustable resistor is electrically connected to the first end of the adjustable capacitor, the second end of the adjustable capacitor is electrically connected to the first end of the transistor and the first end of the pull-down resistor, the second end of the pull-down resistor and the second end of the transistor are grounded, the third end of the transistor is electrically connected to the first input end of the logic unit and the first end of the pull-up resistor, and the second end of the pull-up resistor is connected to the power supply voltage.

3. The cover-opening power-on circuit according to claim 1, characterized in that: The control unit includes: a processor and a digital logic device; The processor is connected to the input end of the digital logic device, and the output end of the digital logic device is electrically connected to the second input end of the logic unit.

4. The cover-opening power-on circuit as claimed in claim 3, characterized in that: The digital logic device is a D flip-flop.

5. The cover-opening power-on circuit as claimed in claim 3, characterized in that: The digital logic device is a D-type latch.

6. The cover-opening power-on circuit according to claim 1, characterized in that: The logic unit is an OR gate. When the control signal is at a low level, the level of the logic signal is consistent with that of the pulse signal, and the power supply circuit is powered on.

7. The cover-opening power-on circuit according to claim 1, characterized in that: The logic unit is an OR gate. When the control signal is at a high level, the levels of the logic signal and the pulse signal are inconsistent, and the power supply circuit is not powered on.

8. The cover-opening power-on circuit according to claim 1, characterized in that: The logic unit is an AND gate. When the control signal is at a high level, the level of the logic signal is consistent with that of the pulse signal, and the power supply circuit is powered on.

9. The cover-opening power-on circuit according to claim 1, characterized in that: The logic unit is an AND gate. When the control signal is at a low level, the levels of the logic signal and the pulse signal are inconsistent, and the power supply circuit is not powered on.

10. An electronic device, characterized in that: The electronic device includes an action unit, a power supply circuit and a cover-opening power-on circuit as described in any one of claims 1 to 9, wherein the cover-opening power-on circuit is respectively connected to the action unit and the power supply circuit, and the cover-opening power-on circuit is used for, when receiving a cover-opening action signal from the action unit, outputting a logic signal to the power supply circuit according to the cover-opening action signal to power on the power supply circuit.

Images