Electronic device

Abstract

The utility model relates to an electronic device. The electronic equipment has a forced burning mode and comprises at least two keys, and when each key is triggered independently, the electronic equipment executes corresponding function operation; the input end of the burning trigger circuit is connected with the at least two keys, the output end of the burning trigger circuit is connected with a processor of the electronic equipment, and under the condition that the burning trigger circuit detects that the at least two keys are triggered at the same time, the burning trigger circuit outputs a forced burning signal to the processor so as to control the electronic equipment to enter a forced burning mode. According to the electronic equipment, the burning complexity can be reduced.

Description

Technical Field

[0001] The present application relates to the field of circuit technology, and in particular to an electronic device. Background Art

[0002] With the continuous development of technology, electronic products are increasingly moving towards intelligence.

[0003] When using electronic products, if a software failure occurs, the only way is to dismantle the machine, remove the chip and burn it on a fixture. The overall burning process is highly complicated. Summary of the invention

[0004] Based on this, it is necessary to provide an electronic device to reduce the complexity of burning in response to the above technical problems.

[0005] In a first aspect, the present application provides an electronic device having a forced burning mode, and the electronic device includes:

[0006] At least two buttons, when each button is triggered individually, the electronic device performs a corresponding function operation;

[0007] The burn trigger circuit has an input end connected to at least two buttons, and an output end connected to a processor of an electronic device. When the burn trigger circuit detects that at least two buttons are triggered at the same time, the burn trigger circuit outputs a forced burn signal to the processor to control the electronic device to enter a forced burn mode.

[0008] In one embodiment, the burning trigger circuit includes:

[0009] A detection circuit, the input end of which is connected to at least two keys, and the detection circuit is used to output a corresponding key trigger signal when the key is triggered; and

[0010] A logic circuit, wherein the input end of the logic circuit is connected to the output end of the detection circuit, the output end of the logic circuit is connected to the processor, and the logic circuit is used to output a forced burning signal to the processor when receiving at least two key trigger signals.

[0011] In one embodiment, the detection circuit includes:

[0012] A first detection circuit and a second detection circuit, the buttons include a first button and a second button, the input end of the first detection circuit is connected to the first button, the input end of the second detection circuit is connected to the second button, and the output end of the first detection circuit and the output end of the second detection circuit are both connected to the input end of the logic circuit.

[0013] In one embodiment, the level types of the key trigger signals are the same, and the logic circuit includes:

[0014] The AND gate logic circuit has an input end for receiving a key trigger signal and an output end connected to a processor. The AND gate logic circuit is used to output a forced burning signal to the processor when receiving at least two key trigger signals.

[0015] In one embodiment, the first button is a power button. When the first button is triggered alone, the electronic device enters a power-on state, a power-off state, a standby state or a wake-up state.

[0016] In one embodiment, the second button is a video recording button. When the second button is triggered alone, the electronic device enters a video recording state or ends a video recording state.

[0017] In one embodiment, the first detection circuit includes: a switch circuit and a protection circuit, the input end of the switch circuit is connected to the first button, the output end of the switch circuit is connected to the input end of the protection circuit, and the output end of the protection circuit is connected to the input end of the logic circuit.

[0018] In one embodiment, the switching circuit includes a switching tube, the protection circuit includes a first resistor, a second resistor and a protection capacitor, the controlled end of the switching tube is respectively connected to the output end of the first resistor and the input end of the second resistor, the input end of the first resistor is connected to the first button, the output end of the second resistor is respectively connected to the voltage source and the input end of the switching tube, and the output end of the switching tube is connected to the input end of the logic circuit; the input end of the protection capacitor is connected to the voltage source and the input end of the switching tube, and the output end of the protection capacitor is grounded.

[0019] In one embodiment, the electronic device is a photographing device.

[0020] In one of the embodiments, the electronic device further includes a housing, the processor and the burning trigger circuit are arranged inside the housing, and the button is arranged outside the housing.

[0021] The electronic device has a forced burning mode, and the electronic device includes: at least two buttons, when each button is triggered separately, the electronic device performs the corresponding function operation; a burning trigger circuit, the input end is connected to the at least two buttons, the output end of the burning trigger circuit is connected to the processor of the electronic device, and the burning trigger circuit outputs a forced burning signal to the processor when detecting that at least two buttons are triggered at the same time, so as to control the electronic device to enter the forced burning mode. This process reduces the cost of data burning of the electronic device by multiplexing at least two original buttons of the electronic device without adding new buttons. The burning trigger circuit is set inside the electronic device to realize the forced burning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the structure of an electronic device in one embodiment;

[0023] Figure 2 is a schematic diagram of the structure of an electronic device in one embodiment;

[0024] Figure 3 is a schematic diagram of the structure of an electronic device in one embodiment;

[0025] Figure 4 is a schematic diagram of the structure of an electronic device in one embodiment;

[0026] Figure 5 is a schematic diagram of the structure of an electronic device in one embodiment;

[0027] Figure 6 is a schematic diagram of the structure of an electronic device in one embodiment;

[0028] Figure 7 is a schematic diagram of the structure of an electronic device in one embodiment;

[0029] Figure 8 is a schematic structural diagram of a voltage adjustment circuit in one embodiment;

[0030] Fig. 9 is a schematic structural diagram of a voltage adjustment circuit in one embodiment;

[0031] Fig.10 FIG. 1 is a schematic diagram of the structure of an electronic device in an embodiment.

[0032] Description of reference numerals:

[0033] 10: electronic device; 11: at least two buttons; 111: first button; 112: second button; 12: burning trigger circuit; 121: detection circuit; 1211: first detection circuit; 1213: switch circuit; M1: switch tube; 1214: protection circuit; R1: first resistor; R2: second resistor; C: protection capacitor; 1212: second detection circuit; M2: video switch tube; R3: third resistor; R4: fourth resistor; 122: logic circuit; 1221: AND gate logic circuit; 13: processor; VDD: voltage source; L1: first inductor; C1: first capacitor; C2: second capacitor; D: diode; L2: second inductor; L3: third inductor; 14: housing. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the term "including" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0036] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0037] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0038] When used herein, the singular forms "a", "an" and " / the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0039] In one embodiment, Figure 1 Schematic diagram of the structure of an electronic device, the electronic device 10 has a forced burning mode, and can enter the forced burning mode through the hardware end to burn the processor chip;

[0040] In this embodiment, the electronic device 10 includes:

[0041] At least two buttons 11, when each button is triggered individually, the electronic device 10 performs a corresponding function operation;

[0042] The burn trigger circuit 12 has an input end connected to at least two buttons 11, and an output end connected to a processor 13 of the electronic device 10. When the burn trigger circuit 12 detects that at least two buttons 11 are triggered at the same time, the burn trigger circuit 12 outputs a forced burning signal to the processor 13 to control the electronic device 10 to enter a forced burning mode.

[0043] The electronic device 10 may be a common electronic device, such as a camera, a mobile phone or a smart watch, etc. When the electronic device 10 is in the forced burning mode, the chip (such as a processor) of the electronic device 10 may be forced burned.

[0044] The electronic device 10 has at least two buttons 11. The two buttons 11 can be set on the outer surface of the electronic device 10 to facilitate the user to trigger the button. For example, the button can be a power button. When the power button is triggered, the electronic device 10 can switch from the off state to the on state. The button can also be a mode selection button. When the mode selection button is triggered, the electronic device 10 can enter the mode selection interface.

[0045] On this basis, in the embodiment of the present application, when setting the forced burning mode, no new buttons are added, and only the buttons of the electronic device 10 itself are reused to achieve forced burning.

[0046] The burning trigger circuit 12 and the processor 13 for implementing forced burning are both arranged inside the electronic device 10 , and at least two buttons 11 are connected to the processor 13 via the burning trigger circuit 12 .

[0047] When at least two buttons 11 are triggered at the same time, the burning trigger circuit 12 will trigger a forced burning signal, and after receiving the forced burning signal, the processor 13 will control the electronic device 10 to enter a forced burning mode. The burning trigger circuit 12 can be implemented by a combination of logic circuits, switch circuits and other electronic components.

[0048] It can be understood that the burning trigger circuit 12 can also be implemented by only at least two switches, each switch is connected to a button, and at least two switches are connected in series. When at least two switches are triggered at the same time, at least two switches are in the on state. At this time, the burning trigger circuit 12 is in the on state and can send a forced burning signal to the processor 13.

[0049] The electronic device has a forced burning mode, and the electronic device includes: at least two buttons, when each button is triggered separately, the electronic device performs the corresponding function operation; a burning trigger circuit 12, the input end is connected to the at least two buttons, the output end of the burning trigger circuit 12 is connected to the processor 13 of the electronic device, and the burning trigger circuit 12 outputs a forced burning signal to the processor 13 when detecting that at least two buttons are triggered at the same time, so as to control the electronic device to enter the forced burning mode. This process reduces the cost of data burning of the electronic device by multiplexing at least two original buttons of the electronic device without adding new buttons. The forced burning process can be realized by only setting a burning trigger circuit inside the electronic device.

[0050] In one embodiment, Figure 2 The structure diagram of the electronic device is shown in FIG. 1 , wherein the burn trigger circuit 12 comprises:

[0051] A detection circuit 121, whose input end is connected to at least two buttons 11, and the detection circuit 121 is used to output a corresponding button trigger signal when a button is triggered; and

[0052] The logic circuit 122 has an input end connected to the output end of the detection circuit 121 , and an output end of the logic circuit 122 connected to the processor 13 . The logic circuit 122 is used to output a forced burning signal to the processor 13 when receiving trigger signals from at least two buttons 11 .

[0053] In the embodiment of the present application, the burning trigger circuit 12 is introduced in detail. The burning trigger circuit 12 includes a detection circuit 121 and a logic circuit 122. The input end of the detection circuit 121 is connected to at least two buttons 11 respectively, the output end of the detection circuit 121 is connected to the input end of the logic circuit 122, and the output end of the logic circuit 122 is connected to the processor 13.

[0054] The detection circuit 121 is used to detect whether at least two keys are triggered. When a key is triggered alone, the detection circuit 121 can output a key trigger signal or not. When at least two keys 11 are triggered at the same time, the detection circuit 121 can output one or more key trigger signals at the same time.

[0055] When receiving the key trigger signal, the logic circuit 12 determines whether the number of the key trigger signal is the same as the number of keys. If they are the same, it is determined that at least two keys 11 are triggered at the same time, and a forced burning signal is output to make the electronic device enter the forced burning mode. If they are not the same, it is determined that at least two keys 11 are not triggered at the same time. At this time, the logic circuit 12 ignores the key trigger signal. Among them, the logic circuit 12 can be a logic gate circuit, a transistor-transistor logic circuit (Transistor-Transistor-Logic, TTL) circuit or a programmable gate array (Field Program Gate Array, FPGA) and the like.

[0056] The burning trigger circuit in the electronic device includes: a detection circuit, whose input end is connected to at least two keys, and the detection circuit is used to output a corresponding key trigger signal when the key is triggered; and a logic circuit, whose input end is connected to the output end of the detection circuit, and whose output end is connected to a processor, and the logic circuit is used to output a forced burning signal to the processor when receiving at least two key trigger signals. The burning trigger circuit can monitor whether the key is triggered in real time through the detection circuit, and judge whether at least two keys are triggered at the same time through the logic circuit, so as to accurately output the forced burning signal.

[0057] In one embodiment, Figure 3 It is a structural diagram of an electronic device, wherein the detection circuit 121 includes: a first detection circuit 1211 and a second detection circuit 1212, the button 11 includes a first button 111 and a second button 112, the input end of the first detection circuit 1211 is connected to the first button 111, the input end of the second detection circuit 1212 is connected to the second button 112, and the output end of the first detection circuit 1211 and the output end of the second detection circuit 1212 are both connected to the input end of the logic circuit 122.

[0058] In the case where there are two keys, and the two keys 11 are respectively the first key 111 and the second key 112, correspondingly, the detection circuit 121 also includes two detection circuits, namely the first detection circuit 1211 and the second detection circuit 1212. The first key 111 is connected to the logic circuit 122 through the first detection circuit 1211, and the first detection circuit 1211 is used to detect whether the first key 111 is triggered. The second key 112 is connected to the logic circuit 122 through the second detection circuit 1212, and the second detection circuit 1212 is used to detect whether the second key 112 is triggered. Among them, the first detection circuit 1211 and the second detection circuit 1212 can be composed of a resistor and a chip, and when the key is pressed, it can be detected by the chip to determine that the key is triggered.

[0059] The detection circuit includes: a first detection circuit and a second detection circuit, the buttons include a first button 111 and a second button 112, the input end of the first detection circuit 1211 is connected to the first button 11, the input end of the second detection circuit 1212 is connected to the second button 112, and the output end of the first detection circuit 1211 and the output end of the second detection circuit 1212 are both connected to the input end of the logic circuit 122. The circuit detects the two buttons respectively through two detection circuits, and can more accurately detect whether the two buttons are triggered by separate detection, thereby improving the detection accuracy.

[0060] In one embodiment, Figure 4It is a structural diagram of an electronic device. The level types of the key trigger signals are the same. The logic circuit 122 includes: an AND gate logic circuit 1221, an input end for receiving a key 11 trigger signal, an output end connected to the processor 13, and the AND gate logic circuit 1221 is used to output a forced burning signal to the processor 13 when receiving at least two key 11 trigger signals.

[0061] The AND gate logic circuit 1211 includes a plurality of input terminals and an output terminal, and the output is high only when all input terminals are high level at the same time, and the output is low when any input terminal is low level.

[0062] In the embodiment of the present application, the input end of the AND gate logic circuit 1221 inputs the trigger signal of the first button 111 and the second button 112, and the output end outputs the forced burning signal. When the first button 111 and the second button 112 in the button 11 are both triggered, the input end of the AND gate logic circuit 1221 inputs both high-level signals, then the output end of the AND gate logic circuit 1221 outputs a high-level signal, i.e., a forced burning signal, to burn the data in the processor 13 to the burner.

[0063] The level types of the above-mentioned key trigger signals are the same, and the logic circuit includes: an AND gate logic circuit, the input end is used to receive the key trigger signal, the output end is connected to the processor, and the AND gate logic circuit is used to output a forced burning signal to the processor when receiving at least two key trigger signals. In this process, when the level types of the two key triggers are the same, the output of the forced burning signal can be realized through the AND gate logic circuit, that is, the forced burning function is realized through simple hardware, which reduces the complexity of forced burning.

[0064] In one embodiment, the first button 111 is a power button. When the first button 111 is triggered alone, the electronic device 10 enters a power-on state, a power-off state, a standby state, or a wake-up state.

[0065] In the embodiment of the present application, if the first button 111 is a power button, and the electronic device 10 is in the off state, the user triggers the first button 111, and the electronic device 10 switches from the off state to the on state. If the electronic device 10 is in the on state, the user triggers the first button 111, and the electronic device 10 switches from the on state to the off state. If the electronic device is in the on sleep state, the user triggers the first button 111, and the electronic device 10 switches from the on sleep state to the awake state.

[0066] The first button is a power button. When the first button is triggered alone, the electronic device enters a power-on state, a power-off state, a standby state or a wake-up state. By limiting the function of the first button, when the first button is a power button and is triggered, the electronic device enters a preset state from different states. The state switching process in different situations can be realized through one power button, thereby reducing the number of buttons to be set.

[0067] In one embodiment, the second button 112 is a video recording button. When the second button 112 is triggered alone, the electronic device 10 enters a video recording state or ends a video recording state.

[0068] In the embodiment of the present application, if the second button 112 is a recording button, and the electronic device 10 is in the power-on state, the user triggers the second button 112, and the electronic device 10 switches from the power-on state to the power-on recording state. If the electronic device 10 is in the power-on recording state, the user triggers the second button 112, and the electronic device 10 switches from the power-on recording state to the end recording state.

[0069] The second button is a video button. When the second button is triggered alone, the electronic device enters the video state or ends the video state. By limiting the function of the second button, when the second button is a video button and is triggered, the electronic device enters the video state or ends the video state from different states. The state switching process under two different conditions can be realized through one video button, thereby reducing the number of buttons to be set.

[0070] In one embodiment, Figure 5 It is a structural diagram of an electronic device, wherein the first detection circuit 1211 includes: a switch circuit 1213 and a protection circuit 1214, the input end of the switch circuit 1213 is connected to the first button 111, the output end of the switch circuit 1213 is connected to the input end of the protection circuit 1214, and the output end of the protection circuit 1214 is connected to the input end of the logic circuit 122.

[0071] The switch circuit 1213 includes two states: closed and open. When the switch circuit 1213 is in the closed state, the first detection circuit 1211 detects that the first button 111 is triggered. When the switch circuit 1213 is in the open state, the second detection circuit 1212 detects that the second button 112 is triggered. Among them, the switch circuit 1213 can be implemented by a switch tube, for example, a triode or a MOS tube. Alternatively, the switch circuit can also be implemented by a single-pole single-throw switch, a single-pole double-throw switch, a single-pole multi-throw switch, etc. Alternatively, the switch circuit can also be implemented by some switch chips, and the electronic components included in the switch circuit 1213 are not limited in the embodiment of the present application.

[0072] The purpose of providing the protection circuit 1214 is to ensure the stability of the voltage supplying the switch circuit and to prevent the switch circuit from being burned due to voltage instability. The protection circuit 1214 may be composed of electronic components such as resistors and capacitors.

[0073] The first detection circuit includes: a switch circuit 1213 and a protection circuit 1214, wherein the input end of the switch circuit 1213 is connected to the first button, the output end of the switch circuit 1213 is connected to the input end of the protection circuit 1214, and the output end of the protection circuit 1214 is connected to the input end of the logic circuit 122. The circuit accurately determines whether the first button 111 is triggered by setting the switch circuit 1213 and according to whether the switch circuit 1213 is turned on or off, and at the same time, the voltage input to the switch circuit 1213 is stable by setting the protection circuit 1214, thereby ensuring the safety of the switch circuit 1213.

[0074] In one embodiment, Figure 6 It is a structural diagram of an electronic device, the switch circuit 1213 includes a switch tube M1, the protection circuit 1214 includes a first resistor R1, a second resistor R2 and a protection capacitor C, the controlled end of the switch tube M1 is respectively connected to the output end of the first resistor R1 and the input end of the second resistor R2, the input end of the first resistor R1 is connected to the first button 111, the output end of the second resistor R2 is respectively connected to the voltage source VDD and the input end of the switch tube M1, the output end of the switch tube M1 is connected to the input end of the logic circuit 122; the input end of the protection capacitor C is connected to the voltage source VDD and the input end of the switch tube M1, and the output end of the protection capacitor C is grounded.

[0075] In the embodiment of the present application, when the first button 111 is triggered, the switch tube M1 is in the on state, and the first detection circuit 1211 outputs a high level signal. Among them, the switch tube can be a triode or a MOS tube. The resistance value of the first resistor R1, the resistance value of the second resistor R2 and the capacitance value of the protection capacitor C can be determined according to the switch tube M1. The first resistor R1 and the second resistor R2 can be wire-wound power resistors, film power resistors or solid ceramic resistors. The protection capacitor C can be an aluminum electrolytic capacitor, a ceramic capacitor or a mica capacitor.

[0076] The above-mentioned switch circuit includes a switch tube, and the protection circuit 1214 includes a first resistor R1, a second resistor R2 and a protection capacitor. The controlled end of the switch tube is respectively connected to the output end of the first resistor R1 and the input end of the second resistor R2, the input end of the first resistor R1 is connected to the first button 111, and the output end of the second resistor R2 is respectively connected to the voltage source and the input end of the switch tube, and the output end of the switch tube is connected to the input end of the logic circuit; the input end of the protection capacitor is connected to the voltage source and the input end of the switch tube, and the output end of the protection capacitor is grounded. The circuit can protect the power-on process of the switch tube through multiple resistors and capacitors to avoid the logic circuit being burned due to unstable voltage during the power-on process, thereby ensuring the safety of the burning trigger circuit.

[0077] Furthermore, Figure 7 It is a structural diagram of an electronic device. The second detection circuit 1212 may also include a video switch tube M2, a third resistor R3 and a fourth resistor R4. The input end of the third resistor R3 is connected to the second button 112, the output end of the third resistor R3 is connected to the controlled end of the video switch tube M2, the input end of the video switch tube M2 is connected to the voltage source VDD, the output end of the video switch tube M2 is respectively connected to the input end of the logic circuit 122 and the input end of the fourth resistor R4, and the output end of the fourth resistor R4 is grounded.

[0078] Next, the voltage source VDD is introduced. The output voltage of the voltage source needs to be kept at a low voltage. For example, the output voltage of the voltage source VDD can be 3.3 volts (V). The 3.3V voltage cannot be obtained directly, and the output voltage of the Universal Serial Bus (USB) interface can be adjusted to meet the requirements of the voltage source. Assuming that the output voltage of the USB interface is 5V, the voltage adjustment circuit composed of resistors and capacitors can be used to convert 5V to 3.3V. Figure 8 : is a structural schematic diagram of a voltage regulation circuit, which includes a 5V input voltage, a first inductor L1, a first capacitor C1, a second capacitor C2, a diode D, a second inductor L2 and a third inductor L3. The input end of the inductor L, the input end of the first capacitor C1, the input end of the second capacitor C2 and the input end of the diode D are all connected to the 5V input voltage, the output end of the first inductor L1, the output end of the first capacitor C1, the output end of the second capacitor C2 and the output end of the diode D are all grounded, the first end of the second inductor L2 is connected to the 5V input voltage, the output end of the second inductor L2 is connected to the input end of the third inductor L3, the output end of the third inductor L3 is grounded, and the common end of the second inductor L2 and the third inductor L3 outputs a 3.3V voltage.

[0079] The voltage regulation circuit can also be realized through the chip. Fig. 9It is a structural diagram of the voltage adjustment circuit, in which a 5V input voltage is connected to the input end of the chip, the output end of the chip is connected to the input end of the second inductor L2, the output end of the second inductor L2 is connected to the input end of the third inductor L3, the output end of the third inductor L3 is grounded, and the common end of the second inductor L2 and the third inductor L3 outputs a 3.3V voltage.

[0080] In one embodiment, Fig.10 Schematic diagram of the structure of an electronic device. The electronic device 10 further includes a housing 14 . The processor 13 and the burning trigger circuit 12 are arranged inside the housing 14 , and the button 11 is arranged outside the housing 14 .

[0081] In the embodiment of the present application, the housing 14 is also arranged inside the electronic device 10. In order to avoid the influence of other circuits in the electronic device 10 on the forced burning process, the processor 13 and the burning trigger circuit 12 are protected by the housing 14. At least two buttons 11 are arranged outside the housing 14 to facilitate the user to trigger the buttons. It should be noted that the housing 14 can be a single housing, and the processor 13 and the burning trigger circuit 12 are arranged inside this housing. Alternatively, there can be two housings, the processor 13 is arranged inside one housing, and the burning trigger circuit 12 is arranged inside another housing. For example, the housing 14 can be made of aluminum alloy material, plastic material or ceramic material.

[0082] The electronic device also includes a housing, a processor and a burning trigger circuit are arranged inside the housing, and a button is arranged on the housing. By arranging the processor and the burning trigger circuit inside the housing, the processor and the burning trigger circuit can be isolated from other circuits through the housing, avoiding the influence of other circuits and ensuring the safety of the burning trigger process.

[0083] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0084] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An electronic device, characterized in that: The electronic device has a forced burning mode, and the electronic device comprises: at least two buttons, when each button is triggered individually, the electronic device performs a corresponding function operation; The burn trigger circuit has an input end connected to at least two of the buttons, and an output end of the burn trigger circuit is connected to the processor of the electronic device. When the burn trigger circuit detects that at least two of the buttons are triggered at the same time, the burn trigger circuit outputs a forced burning signal to the processor to control the electronic device to enter a forced burning mode.

2. The electronic device according to claim 1, characterized in that: The burning trigger circuit comprises: a detection circuit, the input end of which is connected to at least two of the keys, the detection circuit being configured to output a corresponding key trigger signal when the key is triggered; and A logic circuit, wherein the input end of the logic circuit is connected to the output end of the detection circuit, the output end of the logic circuit is connected to the processor, and the logic circuit is used to output the forced burning signal to the processor when receiving at least two of the key trigger signals.

3. The electronic device according to claim 2, characterized in that: The detection circuit comprises: A first detection circuit and a second detection circuit, the button includes a first button and a second button, the input end of the first detection circuit is connected to the first button, the input end of the second detection circuit is connected to the second button, and the output end of the first detection circuit and the output end of the second detection circuit are both connected to the input end of the logic circuit.

4. The electronic device according to claim 2, characterized in that: The level types of the key trigger signals are the same, and the logic circuit includes: The AND gate logic circuit has an input end for receiving the key trigger signal and an output end connected to the processor. The AND gate logic circuit is used to output the forced burning signal to the processor when receiving at least two key trigger signals.

5. The electronic device according to claim 3, characterized in that: The first button is a power button. When the first button is triggered alone, the electronic device enters a power-on state, a power-off state, a standby state or a wake-up state.

6. The electronic device according to claim 3, characterized in that: The second button is a video recording button. When the second button is triggered alone, the electronic device enters a video recording state or ends a video recording state.

7. The electronic device according to claim 3, characterized in that: The first detection circuit includes: a switch circuit and a protection circuit, the input end of the switch circuit is connected to the first button, the output end of the switch circuit is connected to the input end of the protection circuit, and the output end of the protection circuit is connected to the input end of the logic circuit.

8. The electronic device according to claim 7, characterized in that: The switching circuit includes a switching tube, and the protection circuit includes a first resistor, a second resistor and a protection capacitor. The controlled end of the switching tube is respectively connected to the output end of the first resistor and the input end of the second resistor, the input end of the first resistor is connected to the first button, the output end of the second resistor is respectively connected to the voltage source and the input end of the switching tube, and the output end of the switching tube is connected to the input end of the logic circuit; the input end of the protection capacitor is connected to the voltage source and the input end of the switching tube, and the output end of the protection capacitor is grounded.

9. The electronic device according to any one of claims 1 to 5, characterized in that: The electronic device is a photographing device.

10. The electronic device according to any one of claims 1 to 5, characterized in that: The electronic device further comprises a shell, the processor and the burning trigger circuit are arranged inside the shell, and the button is arranged outside the shell.

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