CN219247082U

CN219247082U - USB range extender, connecting wire and electronic equipment

Info

Publication number: CN219247082U
Application number: CN202320242537.3U
Authority: CN
Inventors: 吕俊; 夏凯; 郭润增; 刘勇; 陈羽
Original assignee: Tencent Technology Shenzhen Co Ltd
Current assignee: Tencent Technology Shenzhen Co Ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-06-23
Anticipated expiration: 2033-01-31

Abstract

The application relates to a USB range extender, a connecting wire and electronic equipment, and belongs to the technical field of electronics and electrics. In the device, a power signal end of a USB input port is connected with an electric energy input end of a charging unit, and an electric energy output end of the charging unit is connected with an electric energy input end of an electric energy storage unit; the voltage input end of the voltage conversion unit is connected with the electric energy output end of the electric energy storage unit, the first voltage output end of the voltage conversion unit is connected with the power supply signal end of the USB output port, and the second voltage output end of the voltage conversion unit is connected with the power supply end of the USB signal enhancement unit; the data signal end of the USB input port is connected with the input end of the USB signal enhancement unit, and the output end of the USB signal enhancement unit is connected with the data signal end of the USB output port. By adopting the USB interface signal transmission method and device, the signal transmission quality of USB interface related products can be improved, and the reliable transmission distance of signals can be increased.

Description

USB range extender, connecting wire and electronic equipment

Technical Field

The present disclosure relates to the field of electronic and electrical technologies, and in particular, to a USB range extender, a connection wire, and an electronic device.

Background

USB (universal serial bus) interfaces, including USB-A, USB-B, USB-C, micro-USB, mini-USB, and the like, are widely used in various electronic devices and accessories thereof. However, under the influence of a series of factors such as the technical level of manufacturers, the quality of materials, the performance of supporting circuits, the interference in the use environment, the aging of transmission lines and the like, the situation that the transmission performance of the related products of the USB interface is not up to standard easily occurs, for example, the power supply voltage is too low, so that the terminal equipment cannot recognize, the noise or the time delay of the transmitted data is too large and the like.

Disclosure of Invention

The application provides a USB range extender, a connecting wire and electronic equipment, which can help to improve the signal transmission quality of USB interface related products and increase the reliable transmission distance of signals.

According to the application, a USB range extender is provided, and the device comprises a USB input port, a USB output port, an electric energy storage unit, a charging unit, a voltage conversion unit and a USB signal enhancement unit;

the power supply signal end of the USB input port is connected with the electric energy input end of the charging unit, and the electric energy output end of the charging unit is connected with the electric energy input end of the electric energy storage unit;

the voltage input end of the voltage conversion unit is connected with the electric energy output end of the electric energy storage unit, the first voltage output end of the voltage conversion unit is connected with the power supply signal end of the USB output port, and the second voltage output end of the voltage conversion unit is connected with the power supply end of the USB signal enhancement unit;

the data signal end of the USB input port is connected with the input end of the USB signal enhancement unit, and the output end of the USB signal enhancement unit is connected with the data signal end of the USB output port.

In some possible implementations, the voltage output by the electric energy storage unit through the electric energy output end is a constant direct current voltage, and the voltage conversion unit comprises a DC-DC conversion circuit and a low-voltage drop voltage stabilizing circuit; wherein, the liquid crystal display device comprises a liquid crystal display device,

the voltage input end of the DC-DC conversion circuit is connected with the electric energy output end of the electric energy storage unit, and the voltage output end of the DC-DC conversion circuit is connected with the first voltage output end of the voltage conversion unit;

the voltage input end of the low-voltage-drop voltage-stabilizing circuit is connected with the electric energy output end of the electric energy storage unit, and the voltage output end of the low-voltage-drop voltage-stabilizing circuit is connected with the second voltage output end of the voltage conversion unit.

In some possible implementations, the voltage conversion unit further includes an and circuit, a first input terminal of the and circuit is connected to a power signal terminal of the USB input port, a second input terminal of the and circuit is connected to an electric energy output terminal of the electric energy storage unit, and an output terminal of the and circuit is connected to an enable terminal of the DC-DC conversion circuit and/or the low-voltage-drop voltage stabilizing circuit.

In some possible implementations, the and circuit includes a first transistor, a second transistor, a first capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, and a fifth resistor; wherein, the liquid crystal display device comprises a liquid crystal display device,

the grid electrode of the first transistor is connected with the first input end of the AND gate circuit through the two ends of the first resistor, the first pole of the first transistor is connected with the second input end of the AND gate circuit through the two ends of the second resistor, and the second pole of the first transistor is connected with the common end;

the grid electrode of the second transistor is connected with the first electrode of the first transistor, the first electrode of the second transistor is connected with the output end of the AND gate circuit through the two ends of the third resistor, and the second electrode of the second transistor is connected with the second input end of the AND gate circuit;

two ends of the first capacitor are respectively connected with the grid electrode and the public end of the first transistor;

two ends of the fourth resistor are respectively connected with the grid electrode and the public end of the first transistor;

and two ends of the fifth resistor are respectively connected with the output end and the common end of the AND gate circuit.

In some possible implementations, the electric energy storage unit includes a battery, the charging unit includes a power management module mated with the battery, a positive electrode of the battery is connected with an electric energy input end and an electric energy output end of the electric energy storage unit, a charging power end of the power management module is connected with a power signal end of the USB input port, a battery voltage end of the power management module is connected with a positive electrode of the battery, and a common end of the power management module is connected with a negative electrode of the battery.

In some possible implementations, the battery includes an over-temperature protector, and a temperature status signal output terminal of the over-temperature protector is connected to an enable terminal of the power management module.

In some possible implementations, the apparatus further includes an overvoltage protection circuit and/or an overcurrent protection circuit disposed between the first voltage output terminal of the voltage conversion unit and the power supply signal terminal of the USB output port.

In some possible implementations, the data signal ends of the USB input port and the USB output port each include a data positive end and a data negative end, the positive input end of the USB signal enhancement unit is connected to the data positive end of the USB input port, the negative input end of the USB signal enhancement unit is connected to the data negative end of the USB input port, the positive output end of the USB signal enhancement unit is connected to the data positive end of the USB output port, and the negative output end of the USB signal enhancement unit is connected to the data negative end of the USB output port.

According to the application, a connecting wire with USB ports is further provided, and at least one USB port of the connecting wire is provided with any USB range extender.

According to the application, there is also provided an electronic device having a USB port, the electronic device including any one of the USB range extender devices described above disposed at the USB port.

It can be seen that the range-extending device for USB can receive and store electric energy from the power signal end of the USB input port, and can utilize the stored electric energy to enhance the data signal to be transmitted and generate a new power signal by voltage conversion to be provided for the USB output port, namely, the power signal compensation and the data signal compensation of the USB interface can be realized simultaneously, the reliable transmission distance of the signal can be increased by being connected in series in a connecting line in a mode of a USB adapter, the signal transmission quality can be improved by being arranged in the connecting line or the electronic equipment, the old equipment can be helped to recover normal use, the technical threshold of the access equipment is reduced, and the performance and the stability of products are improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

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

FIG. 1 is a schematic view of an external appearance of a USB range extender according to an embodiment;

FIG. 2 is a block diagram of a USB range extender according to an embodiment;

FIG. 3 is a schematic diagram showing a connection mode of a USB signal enhancement unit in a USB range extender according to an embodiment;

FIG. 4 is a block diagram of a USB range extender shown according to an embodiment;

fig. 5 is a schematic circuit diagram of an and circuit according to an embodiment;

FIG. 6 is a schematic diagram of a connection line with a USB port according to an embodiment;

fig. 7 is a schematic structural view of an electronic device according to an embodiment.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.

The terminology used in the description of the embodiments of the disclosure is for the purpose of describing the embodiments of the disclosure only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," "third," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

Fig. 1 is an external view of a USB range extender according to an embodiment. Referring to fig. 1, the USB range-extending device 100 includes a housing 10, and a USB input port usb_in and a USB output port usb_out are respectively disposed at the left and right ends of the housing 10, so as to be respectively connected with other USB devices or accessories, thereby realizing enhanced signal transmission. Herein, a USB device refers to an electronic device including one or more USB ports, such as a USB camera, mouse, keyboard, audio, etc.; USB accessory refers to a device or consumable that includes one or more USB ports, such as a USB connection, a USB docking station, a USB cradle, etc., that is used with a USB device.

Fig. 2 is a block diagram of a USB range extender according to an embodiment. Referring to fig. 2, the USB range extender includes a USB input port usb_in, a USB output port usb_out, an electric energy storage unit 11, a charging unit 12, a voltage conversion unit 13, and a USB signal enhancement unit 14. The power signal terminal Vbus of the USB input port usb_in is connected to the power input terminal of the charging unit 12 (the left end of the charging unit 12 IN fig. 1), and the power output terminal of the charging unit 12 (the right end of the charging unit 12 IN fig. 1) is connected to the power input terminal of the power storage unit 11 (the left end of the power storage unit 11 IN fig. 1); the voltage input end (the left end of the voltage conversion unit 13 in fig. 1) of the voltage conversion unit 13 is connected with the power output end (the right end of the power storage unit 11 in fig. 1) of the power storage unit 11, the first voltage output end (the right end of the voltage conversion unit 13 in fig. 1) of the voltage conversion unit 13 is connected with the power supply signal end Vbus of the USB output port usb_out, and the second voltage output end (the lower end of the voltage conversion unit 13 in fig. 1) of the voltage conversion unit 13 is connected with the power supply end (the upper end of the USB signal enhancement unit 14 in fig. 1) of the USB signal enhancement unit 14; the Data signal terminal Data of the USB input port usb_in is connected to the input terminal of the USB signal enhancing unit 14 (the left terminal of the USB signal enhancing unit 14 IN fig. 1), and the output terminal of the USB signal enhancing unit 14 (the right terminal of the USB signal enhancing unit 14 IN fig. 1) is connected to the Data signal terminal Data of the USB output port usb_out.

Based on the connection relationship, the USB range-extending device can charge the electric energy storage unit 11 by using the electric energy input at the power signal terminal Vbus of the USB input port usb_in through the charging unit 12, so that the electric energy storage unit 11 can provide the voltage required by the operation of the voltage conversion unit 13 and the USB signal enhancement unit 14, thereby generating a new power signal by voltage conversion through the voltage conversion unit 13 and providing the new power signal to the power signal terminal Vbus of the USB output port usb_out, and enhancing the signal of the Data signal terminal Data from the USB input port usb_in through the USB signal enhancement unit 14 and outputting the signal to the Data signal terminal Data of the USB output port usb_out. It can be deduced that the USB range extender device is always provided with the capability of providing a standard power signal (such as a power signal with a constant voltage value of 5V) and enhancing the USB data signal as long as the power stored IN the power storage unit 11 is not depleted, so that a certain voltage drop, interruption or noise of the power signal at the power signal terminal Vbus of the USB input port usb_in can be allowed according to the performance of the charging unit 12 and the capacity of the power storage unit 11.

In one exemplary application scenario, a USB speaker is connected to a USB port of a notebook computer, the notebook computer supplies power to the USB speaker through the USB port, and the notebook computer transmits a data signal of music to be played to the USB speaker through the USB port. In the application scenario, under the influence of a series of factors such as product quality, material quality, circuit performance, interference in use environment, aging of a transmission line and the like, a plurality of problems that the transmission performance of the USB does not reach the standard may occur: 1) When the carrying capacity of the USB port of the notebook computer is insufficient, the voltage of the provided power supply signal is too low, or the resistance of the connecting wire of the USB sound box is increased due to overlong or aging, the USB sound box cannot be started normally due to insufficient power supply voltage; 2) When the voltage of a power signal output by a USB port of the notebook computer is unstable or the noise of the power signal in transmission is overlarge, the USB sound box is influenced and the working state is unstable; 3) When the insertion loss of the USB port of the notebook computer is too large, the noise of the data signal in transmission is too large, or the impedance of the connecting wire of the USB sound box is too large due to overlong or aging, the data signal received by the USB sound box may be distorted to influence the playing effect.

For each of the above problems, the above-mentioned USB range extender may be used to help solve, i.e. the USB port of the notebook computer is connected to the USB input port usb_in of the USB range extender through a connection line, and the USB sound box is connected to the USB output port usb_out of the USB range extender, so that the USB range extender can charge the internal electric energy storage unit 11 based on the power signal provided by the USB port of the notebook computer, and simultaneously provide the standard power signal for the USB sound box and enhance the data signal of the USB port of the notebook computer by using the stored electric energy. At this time, as long as the input power of the electric energy storage unit 11 provided by the notebook computer is greater than the loss power of the stored electric energy, the USB range extender can be maintained in a working state, and a standard power signal and an enhanced data signal are continuously provided for the USB speaker, so that the USB speaker can still work normally when the abnormal condition occurs.

In addition, the USB range extender can help to increase the reliable transmission distance of signals, and the length of a connecting wire of a USB sound box which can be supported by the notebook computer is only 15 meters at most, which is limited by factors such as carrying capacity, transmission line diameter, resistivity and the like; however, if the mode of connecting the USB loudspeaker box with the range-extending device through the connecting wire is adopted, the limitation can be easily broken through by the furthest distance that the USB loudspeaker box can be connected, so that the USB loudspeaker box can be used at a position farther from the notebook computer on the premise of ensuring normal operation.

It should be understood that, in the example of the USB range extender shown in fig. 1, the USB input port and the USB output port are both female ports, and in other examples, the USB input port and the USB output port of the USB range extender are both male ports, or the USB input port and the USB output port of the USB range extender are both female ports and male ports, or the USB input port and the USB output port of the USB range extender are both male ports and female ports.

It should be understood that the USB signal enhancement unit 14 may be selected from any component, circuit, module, chip or assembly having a USB data signal enhancement function, and may have a corresponding unidirectional/bidirectional data signal conversion function when the USB input port and the USB output port of the USB range extender have different types. IN one example, as shown IN fig. 3, the data signal terminals of the USB input port usb_in and the USB output port usb_out each include a data positive terminal DN and a data negative terminal DP, the positive input terminal d1 of the USB signal enhancing unit 14 is connected to the data positive terminal DN of the USB input port usb_in, the negative input terminal d2 of the USB signal enhancing unit 14 is connected to the data negative terminal DP of the USB input port usb_in, the positive output terminal d3 of the USB signal enhancing unit 14 is connected to the data positive terminal DN of the USB output port usb_out, and the negative output terminal d4 of the USB signal enhancing unit 14 is connected to the data negative terminal DP of the USB output port usb_out. In the case where the data signals of the USB input port and the USB output port of the USB range-extending device are both in differential form, the USB signal enhancing unit 14 will have the circuit connection relationship as shown in fig. 3.

It should be further understood that the electric energy storage unit 11 and the charging unit 12 may be selected from any component, circuit, module, chip or assembly having an electric energy storage function and its matched charging structure (for example, the electric energy storage unit 11 is a rechargeable dry battery or a rechargeable lithium battery, the charging unit 12 is a corresponding battery charging management chip), and the voltage conversion unit 13 may be selected from any component, circuit, module, chip or assembly having a corresponding voltage conversion function according to the output voltage of the electric energy storage unit 11, the voltage of the standard power supply signal, and the operating voltage of the USB signal enhancing unit 14.

In one example, the electric energy storage unit 11 includes a battery, the charging unit 12 includes a power management module PWM that is matched with the battery, a positive electrode of the battery is connected to an electric energy input end and an electric energy output end of the electric energy storage unit, a charging power end of the power management module is connected to a power signal end of the USB input port, a battery voltage end of the power management module is connected to a positive electrode of the battery, and a common end of the power management module is connected to a negative electrode of the battery. At this time, the power input and the power output of the power storage unit 11 are both positive poles of the battery, that is, the power storage unit 11 is charged and discharged at the same node. In some possible implementations, the battery includes an over-temperature protector, and a temperature state signal output end of the over-temperature protector is connected with an enabling end of the power management module. Thus, when the temperature is normal, the temperature state signal output end outputs an enabling signal so that the power management module works normally; when the temperature is abnormal, the temperature state signal output end does not output an enabling signal, so that the power management module stops working, and the battery overheat caused by the fact that the power management module continues to charge is avoided.

In one example, the output voltage of the electric energy storage unit 11 is exactly equal to the voltage of the USB signal enhancing unit 14, and at this time, there may be no circuit structure between the voltage input terminal and the second voltage output terminal inside the voltage converting unit 13 and only one wire (or only a device that does not change the output voltage, such as a filter capacitor, a voltage follower, a magnetic bead, or the like) may be included, so that the output voltage of the electric energy storage unit 11 is directly provided to the USB signal enhancing unit 14 as the converted voltage.

Fig. 4 is a block diagram showing a structure of a USB range extender according to an embodiment. Referring to fig. 4, in comparison with fig. 1, the electric energy storage unit 11 of fig. 4 has the characteristics of charging and discharging at the same node as described above, and the voltage conversion unit of fig. 4 includes a low dropout regulator (LDO) circuit 131, a DC-DC conversion circuit 132, and an and circuit 133. Wherein the voltage input end of the DC-DC conversion circuit 132 is connected to the power output end Vb of the power storage unit 11, and the voltage output end of the DC-DC conversion circuit 132 is connected to the power signal end Vbus of the USB output port usb_out via the first voltage output end of the voltage conversion unit 14; the voltage input end of the low-voltage drop stabilizing circuit 131 is also connected with the electric energy output end Vb of the electric energy storage unit 11, and the voltage output end of the low-voltage drop stabilizing circuit 131 is connected with the power end of the USB signal enhancing unit 14 through the second voltage output end of the voltage converting unit 14. That is, the above-described voltage conversion unit 14 includes two circuit portions, one of which performs conversion from the output voltage of the electric energy storage unit 11 to the standard voltage signal and the other of which performs conversion from the output voltage of the electric energy storage unit 11 to the power supply voltage of the USB signal enhancing unit 14.

IN addition, the first input terminal IN1 of the and circuit 133 is connected to the power supply signal terminal Vbus of the USB input port usb_in, the second input terminal IN2 of the and circuit 133 is connected to the power output terminal Vb of the power storage unit 11, and the output terminal OUT of the and circuit 133 is connected to the enable terminal EN of the DC-DC converter circuit 132. IN this way, the DC-DC conversion circuit 132 performs voltage conversion only when the power signal terminal Vbus of the USB input port usb_in and the power output terminal Vb of the power storage unit 11 are both at high levels, so that erroneous output can be avoided and power consumption can be reduced. In other possible implementations, the output terminal of the and circuit 133 is connected to at least one of the DC-DC converter circuit 132 and the enable terminal EN of the low dropout regulator 131, which can help reduce the power consumption of the corresponding circuit portion.

Fig. 5 is a schematic circuit diagram of an and circuit according to an embodiment. Referring to fig. 5, the and circuit includes a first transistor Q1 (for example, an N-channel enhancement type MOS field effect transistor), a second transistor Q2 (for example, a P-channel enhancement type MOS field effect transistor), a first capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5, wherein: the gate of the first transistor Q1 is connected to the first input terminal IN1 of the and circuit through two ends of the first resistor R1, the first pole (drain IN fig. 5 as an example) of the first transistor Q1 is connected to the second input terminal IN2 of the and circuit through two ends of the second resistor R2, and the second pole (source IN fig. 5 as an example) of the first transistor Q1 is connected to the common terminal; the grid electrode of the second transistor Q2 is connected with the first pole of the first transistor Q1, the first pole of the second transistor Q2 is connected with the output end OUT of the AND gate circuit through two ends of the third resistor R3, and the second pole of the second transistor Q2 is connected with the second input end IN2 of the AND gate circuit; two ends of the first capacitor C1 are respectively connected with the grid electrode and the public end of the first transistor Q1; two ends of the fourth resistor R4 are respectively connected with the grid electrode and the public end of the first transistor Q1; both ends of the fifth resistor R5 are respectively connected with the output end OUT and the common end of the AND gate circuit. IN this way, the voltage at the first input terminal IN1 of the and circuit is provided to the gate of the first transistor Q1 through the low-pass filtering of the first capacitor C1 and the voltage division of the first resistor R1 and the fourth resistor R4, so that the first transistor Q1 is turned off only when the voltage at the first input terminal IN1 is a high level voltage, and thus the voltage at the second input terminal IN2 of the and circuit is provided to the gate of the second transistor Q2 through both ends of the second resistor R2 as a protection resistor; at this time, if the high level voltage is also at the second input terminal IN2 of the and circuit, the second transistor Q2 is turned on, so that the high level voltage at the second input terminal IN2 is supplied to the output terminal OUT of the and circuit through the divided voltage of the third resistor R3 and the fourth resistor R4. It can be seen that the output terminal OUT of the and circuit outputs the high level voltage only when the first input terminal IN1 and the second input terminal IN2 are both high level voltages, i.e. the circuit function of the and circuit is realized. Of course, other components, circuits, modules, chips or modules having the same or similar functions may be selected to implement the and circuit.

In addition, the USB range-extending device may further include other components, circuits, modules, chips, or assemblies that are not mentioned above, so as to achieve corresponding effects or functions. In one example, the USB range extender further includes an overvoltage protection circuit and/or an overcurrent protection circuit disposed between the first voltage output end of the voltage conversion unit and the power signal end of the USB output port, so that the protection function is triggered when the voltage is too high and/or the current is too high, and the connection between the first voltage output end of the voltage conversion unit and the power signal end of the USB output port is disconnected, so as to avoid damaging the USB range extender or other USB devices or accessories connected with the USB range extender.

Fig. 6 is a schematic structural diagram of a connection line with a USB port according to an embodiment. Referring to fig. 6, the connection line has two USB ports of the male port, where a USB range extender 200 (which may be any one of the USB range extenders described above) is disposed at the right USB port, the USB output port usb_out of the USB range extender 200 is connected as an internal port of the connection line to the USB port of the right male port, and the USB input port usb_in of the USB range extender 200 is connected as an internal port of the connection line to the USB port of the left male port. Based on the functions of the USB range extender, the connecting wire can have better signal transmission quality and reliable transmission distance. In other examples, the two USB ports of the connection line may be either the same male port or the same female port, or one of the male port and the female port, respectively.

Fig. 7 is a schematic structural view of an electronic device according to an embodiment. Referring to fig. 7, the electronic device 400 is provided with a USB range extender 300 (which may be any one of the USB range extenders) at one USB port, the USB output port usb_out of the USB range extender 300 is simultaneously used as a USB port of the electronic device for connecting with other USB devices or accessories, and the USB input port usb_in of the USB range extender 300 is used as an internal port of a connecting line for connecting with an internal circuit structure of the electronic device. Based on the function of the USB range extender, the electronic equipment can have better signal output quality and reliable transmission distance at the USB port. IN other examples, the USB output port usb_out of the USB range-extending apparatus 300 is used as an internal port of a connection line to connect to an internal circuit structure of an electronic device, and the USB input port usb_in of the USB range-extending apparatus 300 is used as a USB port of the electronic device to connect to other USB devices or accessories. Based on the function of the USB range extender, the electronic equipment can have better signal input quality and reliable transmission distance at the USB port.

The foregoing description of the preferred embodiments is merely illustrative of the principles of the present application, and not in limitation thereof, and any modifications, equivalents, improvements and/or the like may be made without departing from the spirit and scope of the present application.

Claims

1. The USB range extender is characterized by comprising a USB input port, a USB output port, an electric energy storage unit, a charging unit, a voltage conversion unit and a USB signal enhancement unit;

2. The USB range extender of claim 1, wherein the voltage output by the electrical energy storage unit through the electrical energy output terminal is a constant direct current voltage, and the voltage conversion unit includes a DC-DC conversion circuit and a low voltage drop voltage stabilizing circuit; wherein, the liquid crystal display device comprises a liquid crystal display device,

3. The USB range extender of claim 2, wherein the voltage conversion unit further includes an and circuit, a first input terminal of the and circuit is connected to a power signal terminal of the USB input port, a second input terminal of the and circuit is connected to an electrical energy output terminal of the electrical energy storage unit, and an output terminal of the and circuit is connected to an enable terminal of the DC-DC conversion circuit and/or the low voltage drop voltage regulator circuit.

4. The USB range extender of claim 3, wherein the and circuit comprises a first transistor, a second transistor, a first capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, and a fifth resistor; wherein, the liquid crystal display device comprises a liquid crystal display device,

5. The USB range extender of claim 1, wherein the electrical energy storage unit includes a battery, the charging unit includes a power management module mated with the battery, a positive electrode of the battery is connected to an electrical energy input end and an electrical energy output end of the electrical energy storage unit, a charging power end of the power management module is connected to a power signal end of the USB input port, a battery voltage end of the power management module is connected to a positive electrode of the battery, and a common end of the power management module is connected to a negative electrode of the battery.

6. The USB range extender of claim 5, wherein the battery includes an over-temperature protector, and wherein a temperature status signal output of the over-temperature protector is connected to an enable end of the power management module.

7. The USB range extender device according to any one of claims 1 to 6, further comprising an overvoltage protection circuit and/or an overcurrent protection circuit arranged between the first voltage output of the voltage converting unit and the power supply signal terminal of the USB output port.

8. The USB range extender of any one of claims 1 to 6, wherein the data signal terminals of the USB input port and the USB output port each include a data positive terminal and a data negative terminal, the positive input terminal of the USB signal enhancement unit is connected to the data positive terminal of the USB input port, the negative input terminal of the USB signal enhancement unit is connected to the data negative terminal of the USB input port, the positive output terminal of the USB signal enhancement unit is connected to the data positive terminal of the USB output port, and the negative output terminal of the USB signal enhancement unit is connected to the data negative terminal of the USB output port.

9. A connection line with USB ports, characterized in that at least one USB port of the connection line is provided with a USB range extender according to any one of claims 1 to 8.

10. An electronic device having a USB port, the electronic device comprising the USB range extender of any one of claims 1 to 8 disposed at the USB port.