Forced downloading circuit, electronic equipment and data line

Abstract

The utility model relates to a forced downloading circuit, electronic equipment and a data line, and the forced downloading circuit is applied to the electronic equipment and comprises a voltage obtaining module and a triggering module. The voltage acquisition module is electrically connected with the trigger module; the trigger module comprises a first test point and a second test point; the voltage acquisition module is used for acquiring an input voltage provided by power supply equipment; the trigger module controls the short circuit of the first test point and the second test point based on the input voltage of the voltage acquisition module, so that the electronic equipment enters a forced downloading mode. According to the method and the device, when the electronic equipment fails and cannot be refurbished and upgraded, the failed equipment is controlled to enter the forced downloading mode by detecting the input voltage, and disassembly operation is not needed, so that the detection and maintenance efficiency is improved, and the whole machine environment is not damaged.

Description

Technical Field

[0001] The present disclosure relates to the field of circuit technology, and in particular to a forced downloading circuit, an electronic device and a data line. Background Art

[0002] Currently, when electronic devices such as mobile phones or tablets fail to charge and start up, it is usually necessary to determine whether the device's motherboard has a hard failure (failure of the motherboard hardware function) or a soft failure (software code problem), and then quickly locate and repair the mobile phone or tablet.

[0003] If the device software code is completely damaged, you need to disassemble the machine, short-circuit the two test points reserved on the motherboard, put the phone or tablet into forced download mode, and then flash the device normally, but this repair process is inefficient. And if you encounter a situation where you cannot force an upgrade during the R&D process, disassembling the machine for upgrading will drag down the test verification efficiency, and will also damage the entire machine environment, which is not conducive to verifying some machine problems.

[0004] In the prior art, the Chinese patent with publication number CN218996022U provides an application forced download circuit and electronic device, which outputs a trigger signal by detecting that a physical key is triggered to output a forced download signal. It can be seen that the existing electronic device needs to enter the forced download mode through the key set on the electronic device. The solution also needs to improve the key that cooperates with it, which greatly improves the electronic device as a whole. Utility Model Content

[0005] In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a forced download circuit, an electronic device and a data line.

[0006] In a first aspect, the present disclosure provides a forced download circuit, which is applied to an electronic device and includes: a voltage acquisition module and a trigger module;

[0007] The voltage acquisition module is electrically connected to the trigger module; the trigger module includes a first test point and a second test point;

[0008] The voltage acquisition module is used to acquire the input voltage provided by the power supply device; the trigger module controls the first test point and the second test point to be short-circuited based on the input voltage of the voltage acquisition module, so that the electronic device enters the forced download mode.

[0009] In some embodiments, a data line connection module is also included;

[0010] The data line connection module is electrically connected to the voltage acquisition module and the forced download line respectively; the data line connection module is used to electrically connect the power supply device and the electronic device through the forced download line.

[0011] In some embodiments, the data line connection module includes: a first data signal pin and a second data signal pin;

[0012] The first data signal pin and / or the second data signal pin are electrically connected to an input end of the voltage acquisition module;

[0013] The first data signal pin is used to receive an input voltage of a first data signal end of the forced download line; and the second data signal pin is used to receive an input voltage of a second data signal end of the forced download line.

[0014] In some embodiments, the voltage acquisition module includes a voltage dividing unit;

[0015] The input end of the voltage dividing unit is electrically connected to the output end of the data line connection module; the output end of the voltage dividing unit is electrically connected to the input end of the trigger module.

[0016] In some embodiments, the voltage dividing unit includes: a first resistor and a second resistor;

[0017] The first end of the first resistor is electrically connected to the input end of the voltage divider unit; the second end of the first resistor is electrically connected to the first end of the second resistor and the output end of the voltage divider unit respectively; and the second end of the second resistor is grounded.

[0018] In some embodiments, the trigger module includes a switch unit, a first trigger unit and a second trigger unit; the first trigger unit includes a first test point; the second trigger unit includes a second test point;

[0019] The control end of the switch unit is electrically connected to the output end of the voltage acquisition module; the first end of the switch unit is electrically connected to the first trigger unit; the second end of the switch unit is electrically connected to the second trigger unit;

[0020] The switch unit controls a first test point in the first trigger unit to be short-circuited with a second test point in the second trigger unit based on an input voltage of the voltage acquisition module.

[0021] In some embodiments, the switch unit includes a switch element and a third resistor;

[0022] The control end of the switch element is electrically connected to the control end of the switch unit through the third resistor; the first end of the switch element is electrically connected to the first end of the switch unit; and the second end of the switch element is electrically connected to the second end of the switch unit.

[0023] In some embodiments, the first trigger unit includes a fourth resistor, and the second trigger unit includes a fifth resistor;

[0024] The fourth resistor is electrically connected between the first end of the switch unit and the power supply end; the fifth resistor is electrically connected between the second end of the switch unit and the ground;

[0025] The first test point is arranged between the fourth resistor and the first end of the switch unit; the second test point is arranged between the fifth resistor and the second end of the switch unit.

[0026] In a second aspect, the present disclosure further provides an electronic device, comprising a forced download circuit as described in any one of the first aspects.

[0027] In a third aspect, the present disclosure further provides a data cable, applied to the electronic device provided in the second aspect;

[0028] It includes: a first data signal terminal, a second data signal terminal and a power supply terminal;

[0029] The first data signal terminal is electrically connected to the power supply terminal, and / or the second data signal terminal is electrically connected to the power supply terminal.

[0030] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0031] The forced download circuit provided by the embodiment of the present disclosure is applied to electronic equipment, including: a voltage acquisition module and a trigger module; the voltage acquisition module is electrically connected to the trigger module; the trigger module includes a first test point and a second test point; the voltage acquisition module is used to acquire the input voltage provided by the power supply device; the trigger module controls the first test point and the second test point to be short-circuited based on the input voltage of the voltage acquisition module, so that the electronic device enters the forced download mode. Thus, the voltage acquisition module in the forced download circuit can determine that the electronic device should enter the forced download mode according to the acquired input voltage, and then control the electronic device to enter the forced download mode. The trigger module receives the input voltage, and controls the first test point and the second test point to be short-circuited under the action of the input voltage. The first test point and the second test point are short-circuited to enter the forced download mode. The embodiment of the present disclosure can control the faulty device to enter the forced download mode by detecting the input voltage when the electronic device fails and cannot be flashed and upgraded, without the need for disassembly operation, thereby improving the detection and maintenance efficiency, and will not damage the whole machine environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A schematic diagram of the structure of a forced download circuit provided in an embodiment of the present disclosure;

[0035] Figure 2 A structural schematic diagram of another forced download circuit provided in an embodiment of the present disclosure;

[0036] Figure 3 A structural schematic diagram of another forced download circuit provided in an embodiment of the present disclosure;

[0037] Figure 4 A structural schematic diagram of another forced download circuit provided in an embodiment of the present disclosure;

[0038] Figure 5 A structural schematic diagram of another forced download circuit provided in an embodiment of the present disclosure;

[0039] Figure 6 A structural schematic diagram of another forced download circuit provided in an embodiment of the present disclosure;

[0040] Figure 7 A schematic diagram of voltage changes at a test point provided in an embodiment of the present disclosure;

[0041] Figure 8 A schematic diagram of voltage changes at another test point provided in an embodiment of the present disclosure;

[0042] Fig. 9 A data line interface is provided in an embodiment of the present disclosure.

[0043] Among them, 10, voltage acquisition module; 20, trigger module; 30, data line connection module; R1-R5, first resistor-fifth resistor; Q1, switch element. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0046] An embodiment of the present disclosure provides a forced download circuit, which is applied to electronic devices, such as mobile phones, tablets and other electronic devices. Figure 1 A schematic diagram of a power failure detection circuit provided by an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the forced download circuit includes: a voltage acquisition module 10 and a trigger module 20.

[0047] The voltage acquisition module 10 is electrically connected to the trigger module 20; the trigger module 20 includes a first test point TP1 and a second test point TP2 (not shown in the figure).

[0048] The voltage acquisition module 10 is used to obtain the input voltage provided by the power supply device through the forced download line; the trigger module 20 controls the first test point and the second test point to short-circuit based on the input voltage of the voltage acquisition module 10, so that the electronic device enters the forced download mode.

[0049] The voltage acquisition module 10 is electrically connected to the trigger module 20, and the trigger module 20 includes a first test point and a second test point. The voltage acquisition module 10 is used to acquire the input voltage and transmit the acquired input voltage to the trigger module 20. The trigger module 20 can determine whether to trigger the forced download mode based on the input voltage. For example, if the input voltage meets the preset trigger condition, the trigger module 20 controls the first test point and the second test point to be short-circuited. When the first test point and the second test point are short-circuited, the electronic device can enter the forced download mode; if the input voltage does not meet the preset trigger condition, or there is no input voltage, then the first test point and the second test point will not be short-circuited, and the electronic device does not enter the forced download mode.

[0050] For example, when the electronic device software fails, the forced download circuit receives the input voltage of the electronic device and determines whether the forced download mode needs to be triggered according to the received input voltage. If the forced download mode needs to be triggered, the trigger module short-circuits the first test point and the second test point. There is no need to disassemble the device, and the first test point and the second test point are short-circuited by means of conductive metal or the like, and there is no need to add buttons to control the electronic device, so the improvement to the electronic device is relatively small.

[0051] The voltage acquisition module in the forced download circuit provided in the embodiment of the present disclosure can determine that the electronic device should enter the forced download mode according to the acquired input voltage, and then control the electronic device to enter the forced download mode. The trigger module receives the input voltage, and controls the first test point and the second test point to be short-circuited under the action of the input voltage. The forced download mode can be entered when the first test point and the second test point are short-circuited. When the electronic device fails and cannot be flashed and upgraded, the embodiment of the present disclosure can control the faulty device to enter the forced download mode by detecting the input voltage, without the need for disassembly operation, thereby improving the detection and maintenance efficiency and will not damage the overall machine environment.

[0052] In some embodiments, Figure 2 A schematic diagram of a power failure detection circuit according to another embodiment of the present disclosure is shown in FIG. Figure 2 As shown, the forced download circuit further includes a data line connection module 30 .

[0053] The data line connection module 30 is electrically connected to the voltage acquisition module 10 and the forced download line respectively; the data line connection module 30 is used to electrically connect the power supply device and the electronic device through the forced download line.

[0054] The data line connection module 30 is electrically connected to the forced download line. For example, one end of the forced download line is inserted into the electronic device and electrically connected to the data line connection module 30. The other end of the forced download line can be electrically connected to a power supply device such as a computer. The embodiment of the present disclosure does not limit this. Since the power supply device can provide input voltage to the forced circuit through the forced download line, the data line connection module 30 is also electrically connected to the voltage acquisition module 10, and the voltage acquisition module 10 can obtain the input voltage provided by the power supply device through the forced download line. For example, when the software of the electronic device fails, one end of the forced download line is inserted into the electronic device and the other end is inserted into the power supply device. The data line connection module 30 of the electronic device is connected to the forced download line, and the data line connection module 10 is also electrically connected to the voltage acquisition module 10, so that the voltage acquisition module 10 can receive the input voltage through the forced download line. The forced download line is detachably connected to the electronic device, and plugging and unplugging is relatively convenient, and will not affect the overall structure of the electronic device. When forced downloading is required, the forced download line can be plugged into the electronic device.

[0055] It should be noted that the embodiments of the present disclosure do not limit the method for obtaining the input voltage of the electronic device. The above-mentioned method of obtaining the input voltage by forcing the download line is only a feasible implementation method, and other types of obtaining methods can also be selected according to actual conditions.

[0056] In some embodiments, the data line connection module includes: a first data signal pin and a second data signal pin;

[0057] The first data signal pin and / or the second data signal pin are electrically connected to the input end of the voltage acquisition module;

[0058] The first data signal pin is used to receive an input voltage from a first data signal end of the forced download line; the second data signal pin is used to receive an input voltage from a second data signal end of the forced download line.

[0059] Figure 3 A structural diagram of another forced download circuit provided in an embodiment of the present disclosure is shown in FIG. Figure 3 As shown, a forced download circuit is exemplarily provided, wherein the data line connection module 30 includes a first data signal pin and a second data signal pin, the first data signal pin is a data positive signal terminal DP, and the second data pin is a data negative signal terminal DM.

[0060] The data line connection module 30 needs to be electrically connected to the forced download line, and the forced download line includes a data positive signal line and a data negative signal line, wherein the data positive signal line is connected to the first data signal pin, and the data negative signal line is connected to the second data signal pin. The forced download line also includes a power supply terminal Vbus, the data positive signal terminal is electrically connected to the power supply terminal Vbus, and / or the data negative signal terminal DM is electrically connected to the power supply terminal Vbus (not shown in the figure), and the power supply terminal Vbus is used to provide an input voltage V1. When the forced download line is electrically connected to the power supply device, the forced download line will transmit the input voltage V1 to the first data signal pin and / or the second data signal pin through the data positive signal line and / or the data negative signal line, and then the voltage acquisition module 10 can acquire the input voltage.

[0061] For example, see Figure 3 The power supply device transmits the input voltage V1 to the second data signal pin (data negative signal terminal DM) of the data line connection module 30 through the data negative signal line of the forced download line. The second data signal pin is electrically connected to the voltage acquisition module 10 to transmit the input voltage V1 to the voltage acquisition module 10.

[0062] In some optional embodiments, the power supply device transmits the input voltage to the first data signal pin (data positive signal terminal DP) of the data line connection module through the data positive signal line of the forced download line. The first data signal pin is electrically connected to the voltage acquisition module to transmit the input voltage to the voltage acquisition module.

[0063] In some optional embodiments, the power supply device can transmit the input voltage to the first data signal pin (data positive signal terminal DP) of the data line connection module through the data positive signal line of the forced download line, and can also transmit the input voltage to the second data signal pin (data negative signal terminal DM) of the data line connection module through the data negative signal line of the forced download line. In this case, the forced download circuit may include two voltage acquisition modules and a trigger module, and the first data signal pin and the second data signal pin are electrically connected to different voltage acquisition modules. When any voltage acquisition module acquires the input voltage and can control the two test points of the trigger module to be short-circuited, both enter the forced download module.

[0064] In some embodiments, the voltage acquisition module includes a voltage dividing unit;

[0065] The input end of the voltage dividing unit is electrically connected to the output end of the data line connection module; the output end of the voltage dividing unit is electrically connected to the input end of the trigger module.

[0066] The input voltage of the module is transmitted to the data line through the forced download line. Since the input voltage value may not meet the detection range of the trigger unit, the voltage acquisition module includes a voltage divider unit, which can divide the acquired input voltage and send the divided voltage value to the trigger module so that the acquired voltage meets the requirements.

[0067] In some embodiments, Figure 4 A structural diagram of another forced download circuit provided in an embodiment of the present disclosure is shown in FIG. Figure 4 As shown, the voltage dividing unit includes: a first resistor R1 and a second resistor R2.

[0068] The first end of the first resistor R1 is electrically connected to the input end of the voltage divider unit; the second end of the first resistor R1 is electrically connected to the first end of the second resistor R2 and the output end of the voltage divider unit respectively; the second end of the second resistor R2 is grounded.

[0069] The first resistor R1 and the second resistor R2 are used as voltage-dividing resistors, and the second end of the first resistor R1 is electrically connected to the first end of the second resistor R2 and the output end of the voltage-dividing unit, respectively, to output the divided voltage to the trigger module 20. In some optional embodiments, the first resistor R1 and the second resistor R2 can use resistors with larger resistance values, such as 1KΩ, to avoid the influence of the USB high-speed signal waveform after the resistors are connected.

[0070] In some embodiments, Figure 5 A structural diagram of another forced download circuit provided in an embodiment of the present disclosure is shown in FIG. Figure 5As shown, the trigger module 20 includes a switch unit 21, a first trigger unit 22 and a second trigger unit 23. The first trigger unit 22 includes a first test point TP1, and the second trigger unit 23 includes a second test point TP2.

[0071] The control end of the switch unit 21 is electrically connected to the output end of the voltage acquisition module 10 ; the first end of the switch unit 21 is electrically connected to the first trigger unit 22 ; and the second end of the switch unit 21 is electrically connected to the second trigger unit 23 .

[0072] The switch unit 21 controls the first test point TP1 in the first trigger unit 22 and the second test point TP2 in the second trigger unit 23 to be short-circuited based on the input voltage of the voltage acquisition module 10 .

[0073] The control end of the switch unit 21 is electrically connected to the output end of the voltage acquisition module 10 to receive the input voltage. When the input voltage satisfies the conduction condition of the switch unit 21, the switch unit 21 is turned on, and the first end of the switch unit 21 is conducted with the second end of the switch unit 21. The first end of the switch unit 21 is electrically connected to the first trigger unit 22, and the first trigger unit 22 includes a first test point TP1. The second end of the switch unit 21 is electrically connected to the second trigger unit 23, and the second trigger unit 23 includes a second test point TP2. Therefore, the first test point TP1 is conducted with the second test point TP2. Because the distance between the first test point TP1 and the second test point TP2 is relatively close, the resistance is relatively small and can be ignored, and it is determined that the first test point TP1 and the second test point TP2 are short-circuited.

[0074] In some embodiments, continue to refer to Figure 5 , the switch unit 21 includes a switch element Q1 and a third resistor R3.

[0075] The control end of the switch element Q1 is electrically connected to the control end of the switch unit 21 through the third resistor R3; the first end of the switch element Q1 is electrically connected to the first end of the switch unit 21; the second end of the switch element Q1 is electrically connected to the second end of the switch unit 21.

[0076] For example Figure 5 The first end of the third resistor R3 is electrically connected to the control end of the switch unit 21, and the second end of the third resistor R3 is electrically connected to the control end of the switch element Q1. The third resistor R3 can limit the current entering the switch element Q1. For example, the third resistor R3 is 10kΩ to prevent the current from breaking through the switch element Q1. When the voltage received by the control end of the switch element Q1 meets its turn-on voltage, the switch element Q1 is turned on; when the voltage received by the control end of the switch element Q1 does not meet its turn-on voltage, the switch element Q1 is turned off.

[0077] It should be noted that the embodiments of the present disclosure do not limit the specific structure of the switch unit. The above is only an example and can be set according to actual needs.

[0078] In some embodiments, the switch element Q1 is an N-type transistor, such as an NPN transistor or an N-type MOS transistor. When the control terminal of the switch element Q1 receives a high-level signal, the switch element Q1 is turned on, or when the input voltage received by the control terminal of the switch element Q1 reaches the conduction voltage, the switch element Q1 is turned on. Figure 5 , Q1 is an NMOS tube. When the switch element Q1 receives a high level signal, the switch element Q1 is turned on, and the first test point TP1 is short-circuited with the second test point TP2.

[0079] In some optional embodiments, if a negative voltage can be provided for the switch element Q1 , a P-type transistor may also be used as the switch element Q1 , which needs to be set according to actual conditions.

[0080] In some embodiments, continue to refer to Figure 5 The first trigger unit 22 includes a fourth resistor R4, and the second trigger unit 23 includes a fifth resistor R5.

[0081] The fourth resistor R4 is electrically connected between the first end of the switch unit 21 and the power supply end; the fifth resistor R5 is electrically connected between the second end of the switch unit 21 and the ground.

[0082] The first test point TP1 is set between the fourth resistor R4 and the first end of the switch unit 21 ; the second test point TP2 is set between the fifth resistor R5 and the second end of the switch unit 21 .

[0083] The first trigger unit 22 includes a fourth resistor R4, which is electrically connected between the first end of the switch unit 21 and the power supply end, and is used to pull up the voltage of the second test point. The second trigger unit 23 includes a fifth resistor, which is electrically connected between the second end of the switch unit 21 and the ground, and is used to pull down the voltage of the second test point.

[0084] For example, Figure 6 The structure diagram of another forced download circuit provided by the embodiment of the present disclosure is as follows, the forced download circuit includes a voltage acquisition module 10, a trigger module 20 and a data line connection module 30. Among them, TP1 is the voltage value of the first test point, TP2 is the voltage value of the second test point, and TP3 is the voltage value of the input voltage.

[0085] Take the MTK platform as an example. Figure 7 A schematic diagram of voltage change of a test point provided in an embodiment of the present disclosure, Figure 7The status of the electronic device is fault-normal-fault-normal. When TP1 is pulled low, it enters the forced download mode. R4 is set to 10kΩ and R5 is set to 50Ω. When the electronic device is working normally, TP1 is high and TP2 is low. At this time, the forced download line is not connected, so TP3 is 0. When the electronic device fails and the forced download line is connected, the TP3 voltage value is close to 2V (the voltage value is determined by the connected voltage), Q1 is turned on, and the current between TP1 and TP2 is very small, which is equivalent to a short circuit. However, the resistance of R4 is very large, the resistance of R5 is very small, and the R5 voltage divider is small, so R5 is at the low potential end, pulling TP1 low and entering the forced download mode.

[0086] Taking Qualcomm platform as an example, Figure 8 A schematic diagram of voltage variation of another test point provided in an embodiment of the present disclosure, Figure 8 The status of the electronic device is fault-normal-fault-normal. When TP2 is pulled high, it enters the forced download mode. R4 is set to 100kΩ and R5 is set to 100kΩ. When the electronic device is working normally, TP1 is high and TP2 is low. At this time, the forced download line is not connected, so TP3 is 0. When the electronic device fails and the forced download line is connected, the TP3 voltage value is close to 2V (the voltage value is determined by the connected voltage), Q1 is turned on, and the current between TP1 and TP2 is very small, which is equivalent to a short circuit. The resistance of R5 is very large, so R5 is at the high potential end, pulling TP2 high and entering the forced download mode.

[0087] When entering the forced download mode, you can unplug the forced download cable and insert a normal data cable to perform upgrade downloads and other operations.

[0088] It should be noted that the above embodiments are merely examples for illustrating the requirements for entering the forced download mode in combination with different platforms, and the present disclosure does not impose any limitation on this, and the embodiments can be set according to actual needs.

[0089] The disclosed embodiment also provides an electronic device, including the forced download circuit as described in any of the above embodiments. Since the utility model includes the forced download circuit in the above embodiment, it has the same or corresponding beneficial effects as the forced download circuit in the above embodiment. It should be noted that the electronic device provided by the embodiment of the utility model may also include other circuits, devices or systems for supporting its normal operation, which is not specifically limited in this embodiment.

[0090] The embodiment of the present disclosure further provides a data line, which is applied to the electronic device as described in the above embodiment. The data line includes: a first data signal terminal DP, a second data signal terminal DM and a power supply terminal Vbus.

[0091] The first data signal terminal DP is electrically connected to the power supply terminal Vbus, and / or the second data signal terminal DM is electrically connected to the power supply terminal Vbus.

[0092] Fig. 9 An interface of a data line provided in an embodiment of the present disclosure, such as Fig. 9 As shown, the left data line interface includes GND, D+, D- and Vbus, and the right data line interface includes GND, ID, D+, D- and Vbus, which can meet different data transmission requirements. The first data signal terminal DP is D+, and the second data signal terminal DM is D-. The first data signal terminal DP is electrically connected to the power supply terminal Vbus, or the second data signal terminal DM is electrically connected to the power supply terminal Vbus, so that the first data signal terminal DP or the second data signal terminal DM is connected to the voltage. When the data line is inserted into the forced download circuit, the voltage can be input to the forced download circuit through the first data signal terminal DP or the second data signal terminal DM. Therefore, the above data line can be used as a forced download line.

[0093] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0094] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A forced download circuit, characterized in that: Applicable to electronic equipment, including: voltage acquisition module and trigger module; The voltage acquisition module is electrically connected to the trigger module; the trigger module includes a first test point and a second test point; The voltage acquisition module is used to acquire the input voltage provided by the power supply device; the trigger module controls the first test point and the second test point to be short-circuited based on the input voltage of the voltage acquisition module, so that the electronic device enters the forced download mode.

2. The forced download circuit according to claim 1, characterized in that: Also included is a data line connection module; The data line connection module is electrically connected to the voltage acquisition module and the forced download line respectively; the data line connection module is used to electrically connect the power supply device and the electronic device through the forced download line.

3. The forced download circuit according to claim 2, characterized in that: The data line connection module includes: a first data signal pin and a second data signal pin; The first data signal pin and / or the second data signal pin are electrically connected to an input end of the voltage acquisition module; The first data signal pin is used to receive an input voltage of a first data signal end of the forced download line; and the second data signal pin is used to receive an input voltage of a second data signal end of the forced download line.

4. The forced download circuit according to claim 3, characterized in that: The voltage acquisition module includes a voltage dividing unit; The input end of the voltage dividing unit is electrically connected to the output end of the data line connection module; the output end of the voltage dividing unit is electrically connected to the input end of the trigger module.

5. The forced download circuit according to claim 4, characterized in that: The voltage dividing unit comprises: a first resistor and a second resistor; The first end of the first resistor is electrically connected to the input end of the voltage divider unit; the second end of the first resistor is electrically connected to the first end of the second resistor and the output end of the voltage divider unit respectively; and the second end of the second resistor is grounded.

6. The forced download circuit according to claim 1, characterized in that: The trigger module includes a switch unit, a first trigger unit and a second trigger unit; the first trigger unit includes a first test point; the second trigger unit includes a second test point; The control end of the switch unit is electrically connected to the output end of the voltage acquisition module; the first end of the switch unit is electrically connected to the first trigger unit; the second end of the switch unit is electrically connected to the second trigger unit; The switch unit controls a first test point in the first trigger unit to be short-circuited with a second test point in the second trigger unit based on an input voltage of the voltage acquisition module.

7. The forced download circuit according to claim 6, characterized in that: The switch unit includes a switch element and a third resistor; The control end of the switch element is electrically connected to the control end of the switch unit through the third resistor; the first end of the switch element is electrically connected to the first end of the switch unit; and the second end of the switch element is electrically connected to the second end of the switch unit.

8. The forced download circuit according to claim 6, characterized in that: The first trigger unit includes a fourth resistor, and the second trigger unit includes a fifth resistor; The fourth resistor is electrically connected between the first end of the switch unit and the power supply end; the fifth resistor is electrically connected between the second end of the switch unit and the ground; The first test point is arranged between the fourth resistor and the first end of the switch unit; the second test point is arranged between the fifth resistor and the second end of the switch unit.

9. An electronic device, characterized in that: The invention comprises a forced downloading circuit as described in any one of claims 1 to 8.

10. A data line, characterized in that: Applicable to the electronic device as claimed in claim 9; It includes: a first data signal terminal, a second data signal terminal and a power supply terminal; The first data signal terminal is electrically connected to the power supply terminal, and / or the second data signal terminal is electrically connected to the power supply terminal.

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