CN108650404B

CN108650404B - Port starting circuit, device and mobile terminal

Info

Publication number: CN108650404B
Application number: CN201810304865.5A
Authority: CN
Inventors: 范建功
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2018-04-08
Filing date: 2018-04-08
Publication date: 2021-01-22
Anticipated expiration: 2038-04-08
Also published as: CN108650404A

Abstract

The invention discloses a port starting circuit, which comprises: the triode comprises a base electrode, a collector electrode and an emitter electrode, wherein the base electrode is electrically connected with a GPIO port, the collector electrode is electrically connected with the high-pass chip, the emitter electrode is electrically connected with a USB starting port, and when high potential voltage is output by the GPIO port, the triode is in a conducting state so that the high-pass chip is in short circuit with the USB starting port. In addition, the invention also discloses a port starting device and a mobile terminal. By adopting the invention, the high-pass chip can be automatically and short-circuited with the USB starting port under the condition that the GPIO port is high potential voltage, once the USB data line of the computer end is inserted, the downloading port appears, the disassembly operation is not needed, the time of a user and after-sale is saved, and the user experience is improved.

Description

Port starting circuit, device and mobile terminal

Technical Field

The invention relates to the technical field of communication, in particular to a port starting circuit, a port starting device and a mobile terminal.

Background

Mobile terminals such as mobile phones have become an indispensable carrier tool in daily life, especially, the popularization of payment tools in recent years has pushed the mobile phones to a new peak, the capacities of Random-Access memories (RAMs) and Read Only Memory images (ROMs) of the mobile phones have also become larger, and more users store information in the mobile phones. When a user needs to copy information to a computer end for processing, the information in the mobile phone can be transmitted to the computer end through one piece of data, and the premise of information transmission is that the mobile phone can be successfully connected to the computer. Under the common condition, when a port appears at a computer end, the task can be successfully connected, and the next operation can be carried out.

To solve the problem, a conventional solution for the problem that the port problem cannot occur at present is to disassemble the machine and expose the position of the motherboard, short-circuit a forced download Universal Serial Bus (USB) start (BOOT) pin provided by a high-pass chip in the motherboard with a high potential output by a switching power supply in a PM chip of a high-pass power supply management chip, and then insert the USB into a computer, so that a mobile phone download port can occur at the computer. However, the greatest disadvantage of the prior art is that the mobile phone needs to be dismounted, the user needs to send the mobile phone to the after-sale first, and then the port resetting operation is performed after the mobile phone passes through the dismounting operation, so that the handling mode brings great trouble to the after-sale, also brings long-time waiting to the user, and has great risk if other damages are brought in the dismounting process.

Disclosure of Invention

The invention mainly aims to provide a port starting circuit, a port starting device and a mobile terminal, and aims to solve the problem that the existing port starting needs to be disassembled.

In order to achieve the above object, the present invention provides a port start circuit, including: the triode comprises a base electrode, a collector electrode and an emitter electrode, wherein the base electrode is electrically connected with a GPIO port, the collector electrode is electrically connected with the high-pass chip, the emitter electrode is electrically connected with a USB starting port, and when high potential voltage is output by the GPIO port, the triode is in a conducting state so that the high-pass chip is in short circuit with the USB starting port.

Optionally, when the GPIO port outputs a low potential voltage, the transistor is in a non-conducting state.

Optionally, the circuit further includes a first voltage-dividing resistor, one end of the first voltage-dividing resistor is electrically connected to the GPIO port, and the other end of the first voltage-dividing resistor is electrically connected to the base.

Optionally, the circuit further includes a second voltage-dividing resistor, one end of the second voltage-dividing resistor is electrically connected to a common end of the first voltage-dividing resistor and the base, and the other end of the second voltage-dividing resistor is electrically connected to ground.

In addition, to achieve the above object, the present invention further provides a port activation apparatus, including: a reader, an antenna, a transponder, a processor, and a port activation circuit, wherein,

the reader is respectively coupled with the antenna and the transponder;

one end of the processor is electrically connected with the transponder, and the other end of the processor is electrically connected with the port starting circuit;

when the antenna transmits a starting signal to the reader, the reader starts working and transmits the starting signal to the responder, and when the starting signal meets a preset condition, the responder triggers a GPIO port of the processor to output high potential voltage so as to enable a high-pass chip of the port starting circuit to be in short circuit with a USB starting port.

Optionally, the port start circuit includes a triode, the triode includes a base, a collector and an emitter, wherein the base is electrically connected to the GPIO port, the collector is electrically connected to the high-pass chip, the emitter is electrically connected to the USB start port, and when a high potential voltage is output from the GPIO port, the triode is in a conducting state, so that the high-pass chip is short-circuited with the USB start port.

Optionally, the circuit further includes a first voltage-dividing resistor and a second voltage-dividing resistor, wherein one end of the first voltage-dividing resistor is electrically connected to the GPIO port, and the other end of the first voltage-dividing resistor is electrically connected to the base; one end of the second voltage-dividing resistor is electrically connected to the common end of the first voltage-dividing resistor and the base, and the other end of the second voltage-dividing resistor is electrically connected to the ground.

Optionally, the antenna is a near field communication antenna.

In addition, in order to achieve the above object, the present invention further provides a mobile terminal, which includes the above port activation apparatus.

The port starting circuit, the device and the mobile terminal provided by the invention can automatically short-circuit the high-pass chip and the USB starting port under the condition that the GPIO port is high potential voltage, once the USB data line of the computer end is inserted, a downloading port appears, the operation of disassembling the computer is not needed, the time of a user and after-sale is saved, and the user experience is improved.

Drawings

Fig. 1 is a schematic diagram of a hardware structure of an alternative mobile terminal for implementing various embodiments of the present invention;

FIG. 2 is a schematic diagram of a communication network system of the mobile terminal shown in FIG. 1;

FIG. 3 is a circuit diagram of a port activation circuit according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a port activation device according to a second embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.

First embodiment

As shown in fig. 3, a port start circuit 10 according to a first embodiment of the present invention is provided. In fig. 3, the port start circuit 10 includes a transistor Q1, a first voltage-dividing resistor R1, and a second voltage-dividing resistor R2. The base of the transistor Q1 is electrically connected to a GPIO port (as shown in fig. 4), the collector of the transistor Q1 is electrically connected to the high-pass chip, and the emitter of the transistor Q1 is electrically connected to a USB start port. One end of the first voltage-dividing resistor R1 is electrically connected to the GPIO port, and the other end is electrically connected to the base of the transistor Q1. One end of the second voltage-dividing resistor R2 is electrically connected to the common end of the first voltage-dividing resistor R1 and the base of the transistor Q1, and the other end is electrically connected to ground. When the GPIO port outputs a high potential voltage, that is, the digital point is "1", the transistor Q1 is in a conducting state, so that the high-pass chip is short-circuited with the USB start port, that is, when the GPIO port is a high potential voltage, the 1.8V output of the high-pass chip can be short-circuited with the USB start port of a Central Processing Unit (CPU), if a USB data line connected to a computer terminal is inserted into an interface of a mobile phone, a download port can appear, and the first voltage dividing resistor R1 and the second voltage dividing resistor R2 play a role in dividing voltage. When the output voltage of the GPIO port is a low-level voltage, i.e., the digital point is "0", the transistor Q1 is in a non-conducting state.

The port starting circuit of the embodiment can automatically short-circuit the high-pass chip and the USB starting port under the condition that the GPIO port is high potential voltage, once the USB data line of the computer end is inserted, the downloading port appears, the disassembling operation is not needed, the time of a user and after-sale is saved, and the user experience is improved.

Second embodiment

As shown in fig. 4, a second embodiment of the present invention provides a port activation device. In fig. 4, the port activation device includes a port activation circuit 10, a reader 20, an antenna 30, and a transponder 40. Wherein, the reader 20 is respectively coupled with the antenna 30 and the transponder 40; processor 110 is electrically connected to transponder 40 at one end and to port activation circuit 10 at the other end. When the antenna 30 transmits the start signal to the reader 20, the reader 20 starts to operate, and transmits the start signal to the transponder 40, and when the start signal meets a preset condition, the transponder 40 triggers the GPIO port of the processor 110 to output a high potential voltage, so that the high-pass chip of the port start circuit 10 is in short circuit with the USB start port.

Optionally, the port activation circuit 10 includes a transistor Q1, a first voltage-dividing resistor R1, and a second voltage-dividing resistor R2. The base electrode of the triode Q1 is electrically connected with the GPIO port, the collector electrode of the triode Q1 is electrically connected with the high-pass chip, and the emitter electrode of the triode Q1 is electrically connected with the USB starting port. One end of the first voltage-dividing resistor R1 is electrically connected to the GPIO port, and the other end is electrically connected to the base of the transistor Q1. One end of the second voltage-dividing resistor R2 is electrically connected to the common end of the first voltage-dividing resistor R1 and the base of the transistor Q1, and the other end is electrically connected to ground. When the GPIO port outputs a high potential voltage, that is, the digital point is "1", the transistor Q1 is in a conducting state, so that the high-pass chip is short-circuited with the USB start port, that is, when the GPIO port is a high potential voltage, the 1.8V output of the high-pass chip can be short-circuited with the USB start port of the CPU, if the USB data line connected to the computer terminal is inserted into the interface of the mobile phone, a download port can appear, and the first voltage dividing resistor R1 and the second voltage dividing resistor R2 perform a voltage dividing function. When the output voltage of the GPIO port is a low-level voltage, i.e., the digital point is "0", the transistor Q1 is in a non-conducting state.

Optionally, the reader 20 is a card, and includes a voltage dividing capacitor and a voltage dividing resistor.

Optionally, the antenna 30 of the present embodiment is a Near Field Communication (NCF) antenna. When the card is in proximity to the NFC antenna, the NFC antenna transmits energy to the reader 20 through the coupling, and the reader 20 becomes operable upon receiving the energy and transmits the energy to the transponder 40, wherein the transmitted energy includes the card information. Because the card is close to the NFC antenna for a short distance, the card has a very high safety factor, and when the information of the card identified by the NFC chip is a special card of a user, the processor 110 is informed to output a high potential voltage from the GPIO port.

Optionally, the transponder 40 comprises a first capacitor C1, a second capacitor C2 and a chip connected in parallel to each other.

The port starting device of the embodiment can automatically short-circuit the high-pass chip and the USB starting port through the port starting circuit 10 under the condition that the GPIO port of the processor 110 is high potential voltage, once a USB data line of a computer end is inserted, a downloading port appears, disassembly operation is not needed, users and after-sale time are saved, and user experience is improved.

Third embodiment

A third embodiment of the present invention provides a mobile terminal, as shown in fig. 1, the mobile terminal of this embodiment includes a port activation device 112, where the port activation device 112 is the port activation device according to the second embodiment.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A port activation circuit, the circuit comprising: the triode comprises a base electrode, a collector electrode and an emitter electrode, wherein the base electrode is electrically connected with a GPIO port, the collector electrode is electrically connected with the high-pass chip, the emitter electrode is electrically connected with a USB starting port, and when high potential voltage is output by the GPIO port, the triode is in a conducting state so that the high-pass chip is in short circuit with the USB starting port.

2. The port start circuit as claimed in claim 1, wherein when the GPIO port outputs a low voltage level, the transistor is in a non-conducting state.

3. The port start circuit of claim 1, further comprising a first voltage dividing resistor electrically connected at one end to the GPIO port and at the other end to the base.

4. The port activation circuit of claim 3, further comprising a second voltage divider resistor having one end electrically connected to a common terminal of the first voltage divider resistor and the base and another end electrically connected to ground.

5. A port activation device, the device comprising: a reader, an antenna, a transponder, a processor, and a port activation circuit, wherein,

the reader is respectively coupled with the antenna and the transponder;

when the antenna transmits a starting signal to the reader, the reader starts working and transmits the starting signal to the responder, and when the starting signal meets a preset condition, the responder triggers a GPIO port of the processor to output high potential voltage so as to enable a high-pass chip of the port starting circuit to be in short circuit with a USB starting port;

the port starting circuit comprises a triode, wherein the triode comprises a base electrode, a collector electrode and an emitter electrode, the base electrode is electrically connected with the GPIO port, the collector electrode is electrically connected with the high-pass chip, the emitter electrode is electrically connected with the USB starting port, and when high potential voltage is output by the GPIO port, the triode is in a conducting state so that the high-pass chip is in short circuit with the USB starting port.

6. The port start device as claimed in claim 5, wherein when the GPIO port outputs a low voltage, the transistor is in a non-conducting state.

7. The port activation device of claim 5, wherein said circuit further comprises a first voltage dividing resistor and a second voltage dividing resistor, wherein one end of said first voltage dividing resistor is electrically connected to said GPIO port, and the other end of said first voltage dividing resistor is electrically connected to said base; one end of the second voltage-dividing resistor is electrically connected to the common end of the first voltage-dividing resistor and the base, and the other end of the second voltage-dividing resistor is electrically connected to the ground.

8. A port activation device according to claim 5, wherein said antenna is a near field communication antenna.

9. A mobile terminal, characterized in that it comprises a port activation device according to any of claims 5-8.