CN204537133U - Key devices, data switching device, assembly and system - Google Patents

Abstract

The utility model provides a key device, a data switching device, a component and a system. The key device includes a built-in data processing storage circuit, a built-in power supply and an external connection port, wherein the external connection port includes: an electric energy output pin configured to communicate with the built-in power supply to output electric energy externally; and an electric energy input pin configured to be connected by The external control is connected with the electric energy output pin to start the built-in power supply to start supplying power to the key device, and start the built-in data processing and storage circuit to work. The data switching device is correspondingly configured to work with the key device, so that a corresponding data interaction component and a data interaction system are provided based on the key device and the data switching device.

Description

Key devices, data switches, components and systems

technical field

The utility model relates to the field of data security, in particular to a key device, a data switching device, a data interaction component and a data interaction system.

Background technique

Today, with the development of network technology, online banking and online payment have become common operations for people. Correspondingly, the protection of digital security behaviors such as payment security has become one of the most concerned things.

Due to the openness and extensiveness of the network, the user's data security may be threatened by various risks such as hackers, fake websites, and Trojan viruses. In order to solve these threats, the prior art provides a key device to protect the user's data security. Among various key devices, USBkey (often called U-Shield or U-Key, etc.) is widely used at present.

USBkeys usually require power to work. Existing USBkey power supply methods include an external power supply method and a self-power supply method. The existing USBkey external power supply method is to obtain working power from the external device connected for data interaction through the USB cable. This is the most common power supply method for the existing USBkey. It can automatically supply power for the USBkey when the external device is working normally, and automatically start USBkey to work. On such a USBkey, there is usually no need to set any manual start switch, and the structure design of the USBkey is simple and convenient for users to use. In contrast, existing USBKeys are self-powered by having a power source built into the USBKey itself (such as a suitable battery). This kind of USBKey with a built-in power supply usually requires, for example, to operate a manual switch set on the USBKey to start the built-in power supply and directly supply power to the electrical components in the USBKey, so that the USBKey starts to work. Its structural design is relatively complicated, and it is not enough for users. convenient.

Moreover, the existing USBkey is generally connected to an external device through a standard USB cable (connection interfaces at both ends of which can be the same standard USB interface type or a different USB interface type), and carry out data processing with the external device according to the USB communication protocol. interact. However, some external devices do not have a standard USB interface, or in some special application situations, it is not convenient to use the USB interface of the external device. For example, when a portable terminal such as a smart phone is used as an external device for data interaction with the USB key, it may not be convenient to use a standard USB cable for connection. It can be said that the limitation of this connection method has seriously affected the application range and marketing of USBKey, and even became the primary reason why many users do not choose to use USBKey as their data security tool even when handling important financial services.

Utility model content

An object of the present invention is to solve at least one problem of the prior art, and provide a key device, a data switching device, a data interaction component and a data interaction system that are easy to use and have an extended application range.

A further purpose of the utility model is to make the key equipment, the data transfer device, the data interaction component and the data interaction system of the utility model, after completing the necessary cable connection, the key equipment can be used The built-in power supply automatically supplies power to the key device and the data transfer device without any special manual operation by the user.

Another further purpose of the utility model is to allow the use of different types of interfaces (especially USB interface and audio interface) in the key device, data switching device, data interaction component and data interaction system of the utility model Data exchange is performed between the key device and the corresponding external device.

A further object of the present utility model is to make the key device of the present utility model compatible with the existing methods of cable connection, power supply start and data interaction of the same type of key device.

According to the first aspect of the present invention, a key device is provided, which includes a built-in data processing and storage circuit, a built-in power supply and an external connection port. In particular, the external connections include:

an electric energy output pin configured to communicate with the built-in power supply to output electric energy; and

The power input pin is configured to be connected to the power output pin by external control, so as to start the built-in power supply to start supplying power to the key device, and start the built-in data processing and storage circuit to work.

Optionally, the external connection interface further includes at least one data pin for transmitting data signals.

Optionally, the external connection port is a five-core USB interface; the power output pin of the external connection port is the ID pin of the five-core USB interface; the power input pin of the external connection port is The VCC pin of the five-core USB interface; and at least one data pin of the external connection port is the D+ pin and/or D- pin of the five-core USB interface.

Optionally, the external connection interface is a five-core USB female socket interface.

According to a second aspect of the present invention, a data switching device is provided, including a first interface for connecting to a first external device, and a second interface for connecting to a second external device. In particular, also include:

The trigger circuit connected between the first interface and the second interface is configured to lead the power output of the first interface to the The pin is connected to the power input pin of the first interface;

The first interface includes:

a power input pin configured to input power from the outside to at least provide power for the operation of the data switching device; and

The power output pin is configured to be connected to the power input pin in a controlled manner according to the trigger signal.

Optionally, the trigger circuit includes: a trigger component and a controllable switch;

The trigger component is connected in series between the second interface and the first end of the controllable switch, the second end of the controllable switch is electrically connected to the power input pin, and the first end of the controllable switch The three terminals are electrically connected to the electric energy output pin;

The trigger component is configured to connect the second end of the controllable switch to the third end when the second interface receives a trigger signal from the second external device.

Optionally, the controllable switch includes at least a MOS transistor, the first end of the controllable switch is the gate of the MOS transistor, and the second end of the controllable switch is the source of the MOS transistor, The third end of the controllable switch is the drain of the MOS transistor;

The trigger component is configured to turn on the MOS transistor when receiving a trigger signal from the second interface.

Optionally, the controllable switch further includes a bias resistor, and the bias resistor is connected in series between the edge and the gate of the MOS transistor.

Optionally, the first interface further includes at least one data pin for transmitting data signals.

Optionally, the first interface is a five-core USB interface; the power input pin of the first interface is the ID pin of the five-core USB interface; the power output pin of the first interface is The VCC pin of the five-core USB interface; at least one data pin of the first interface is the D+ pin and/or D- pin of the five-core USB interface.

Optionally, the first interface is a five-core USB male socket interface.

Optionally, the second interface is an audio interface.

According to a third aspect of the present invention, a data interaction component is provided, including:

any key device according to the first aspect of the invention; and

According to any data transfer device according to the second aspect of the present utility model, wherein the external connection port of the key device and the first interface of the data transfer device are configured to be operatively connected to each other, the key device used as a first external device connected to said data switching device;

Wherein, the power output pin of the external connection port of the key device and the power input pin of the first interface of the data switching device are configured to be operatively connected to each other, and the external connection port of the key device The power input pin of the data switching device and the power output pin of the first interface of the data switching device are configured to be operatively connected to each other.

Optionally, the first external device is any key device according to the first aspect of the present utility model; and/or the second external device includes a desktop computer, a laptop computer, an intelligent mobile communication terminal and a personal digital assistant .

According to a fourth aspect of the present invention, a data interaction system is provided, including:

Any key device according to the first aspect of the present utility model;

According to any data transfer device according to the second aspect of the present utility model, wherein the external connection port of the key device and the first interface of the data transfer device are configured to be operatively connected to each other, so that the encryption a key device used as a first external device connected to said data switch; and

A terminal device, wherein one terminal interface of the terminal device and the second interface of the data switching device are configured to be operatively connected to each other, so that the terminal device serves as a second terminal connected to the data switching device 2. External equipment.

In the embodiment according to the first aspect of the present utility model, since the key device has a built-in power supply, and its external connection port is specially set to include a power output pin for externally providing power and communicate with the power output pin through external control The power input pin of the utility model, the power input pin is connected with the power output pin to start the built-in power supply and start supplying power to the key device, thereby allowing the key device of the present utility model to be automatically encrypted when connected via an appropriate data transfer device. The key device and the data transfer device are powered, and data interaction can be conveniently performed without special manual operation by the user.

In the embodiment according to the second aspect of the present utility model, since the first interface of the data switching device is specially configured to include a power input pin for inputting power from the first external The trigger signal received by the external device is controlled to be connected to the power output pin of the power input pin, so that it can work well with the key device according to the first aspect of the present invention.

Optionally, in some embodiments according to the second aspect of the present invention, the data switching device is configured to communicate with the power output pin and the power input pin of the first interface only after the second interface receives the trigger signal. foot, so that in the data interaction system according to the utility model, the key device will be started to work only after the whole system is correctly connected and the corresponding external device is started, which effectively reduces the unnecessary power supply of the key device's built-in power supply. Power consumption, significantly prolonging the use time of the built-in power supply of the key device for one replacement or charging.

Optionally, in some embodiments according to the second aspect of the present invention, the type of the second interface of the data switching device may be different from the type of the first interface, and an appropriate trigger may be set according to the corresponding interface requirements The circuit performs data signal conversion, such as the mutual conversion between the data signal required by the USB interface and the audio signal required by the MIC plug, which greatly improves the flexibility of the key device of the present invention to be connected with other external devices, and significantly expands the The scope of application of the key device of the utility model.

According to the following detailed description of specific embodiments of the utility model in conjunction with the accompanying drawings, those skilled in the art will be more aware of the above and other objectives, advantages and features of the utility model.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail with reference to the accompanying drawings and in an exemplary rather than restrictive manner. The same reference numerals in the drawings designate the same or similar parts or parts. Specifically, in the accompanying drawings:

Fig. 1 shows a schematic block diagram of a key device according to an embodiment of the present invention;

Fig. 2 shows a schematic pin diagram of an external connection port of a key device according to an embodiment of the present invention;

Fig. 3 shows a schematic block diagram of a data transfer device according to an embodiment of the present invention;

Fig. 4A shows a schematic block diagram of a part of the trigger circuit in the data switching device according to an embodiment of the present invention;

Fig. 4B shows a schematic circuit diagram of a part of the trigger circuit in the data switching device according to an embodiment of the present invention;

Fig. 5 shows a schematic block diagram of a data interaction component according to an embodiment of the present invention;

Figure 6 shows a schematic block diagram of a data interaction system according to an embodiment of the present invention; and

Fig. 7 shows a schematic circuit diagram of a data interaction system according to an embodiment of the present invention.

Detailed ways

Fig. 1 shows a schematic block diagram of a key device 100 according to an embodiment of the present invention. Such a key device 100 may be, for example, a USB key for storing user digital security certificates and user private keys, which may generally include a built-in power supply 110, an external connection port 120, and a built-in data processing and storage circuit 130, etc. Wherein, the built-in power supply 110 is used for providing electric energy, and the external connection port 120 is used for connecting with other external devices. The key device 100 may also include a specific circuit capable of implementing the key providing function. The possible specific circuit parts are well known and easy to implement by those skilled in the art, and will not be described in detail herein. The built-in data processing and storage circuit 130 is used to store and process data and provide key functions.

In particular, in the embodiment of the present invention, the external connection interface 120 is configured to include at least two pins, namely: a power output pin 121 and a power input pin 122 . The power output pin 121 is configured to communicate with the built-in power supply 110 to provide power externally. The power input pin 122 is configured to communicate with the power output pin 121 by external control, so as to start the built-in power supply 110 to start supplying power to the key device 100 and start the built-in data processing and storage circuit 130 in the key device 100 to work.

In the embodiment of the utility model, since the key device has a built-in power supply, and its external connection port is specially set to include a power output pin for externally providing power and a power input pin communicated with the power output pin by external control , the power input pin communicates with the power output pin to start the built-in power supply and start supplying power to the key device, thereby allowing the key device of the present invention to automatically transfer the key device and data when connected via an appropriate data transfer device The device is powered, and data interaction can be conveniently performed without special manual operation by the user.

In one embodiment, referring to FIG. 1 , the external connection interface 120 further includes at least one data pin 123 for transmitting data signals. Since the key device 100 is generally used to provide digital keys required for identity verification for payment operations, the data pin 123 is preferably configured to transmit digital signals. If the key device 100 can provide other types of keys, the data pin 123 can also be configured to transmit other corresponding types of signals (such as some form of analog signal carrying data information).

In FIG. 1, in order to schematically show that the external connection interface 120 includes data pins, only one data pin 123 is shown. However, those skilled in the art can recognize that in practical applications, according to actual needs, for example Set the number of data pins specifically according to the requirements of the communication protocol or interface standard used.

The external connection interface 120 may be a common HDMI interface, DVI interface or USB interface. In some embodiments of the present invention, as shown in FIG. 2 , a five-core USB interface is preferably used, more preferably a five-core USB female socket interface is used as the external connection port 120 of the key device 100 of the present invention. Common five-core USB interfaces include, for example, mini USB interfaces and Micro USB interfaces, and their pins include VCC pins, D+ pins, D- pins, ID pins, and GND pins. In particular, in these embodiments of the present invention, the power output pin 121 of the external connection port 120 is the ID pin of the five-core USB interface, and the power input pin 122 of the external connection port is a five-core USB interface. At least one data pin 123 of the external connection interface 120 is the D+ pin and/or D- pin of the five-core USB interface.

Correspondingly, the present invention also provides a data transfer device 300, which can be used in conjunction with the key device 100 described above. Referring to FIG. 3, the data switching device 300 includes a first interface 310, a second interface 320 and a trigger circuit 330, wherein the first interface 310 is used to connect a first external device, and the second interface 320 is used to connect a second external device, The trigger circuit 330 is connected between the first interface 310 and the second interface 320, especially, in the embodiment of the present utility model, the first interface 310 of the data switching device 300 includes at least a power input pin 311 and a power output pin 312 feet. Wherein, the trigger circuit 330 is at least used for connecting the power output pin 311 of the first interface 310 to the power input pin 312 of the first interface 310 when the second interface 320 receives a trigger signal from the second external device. In some embodiments of the present utility model, the first external device can be the aforementioned key device 100 according to the present utility model, and the second external device can be, for example, a desktop computer, a laptop computer, an intelligent mobile communication terminal and a personal digital Electronic data processing equipment such as assistants. In particular, in the embodiment of the present utility model, the power input pin 311 is configured to input power from the outside to at least provide power for the operation of the data switching device 300; The trigger signal received by the second interface 320 is controlled and connected to the power input pin 311 to output power.

In the prior art, in addition to the data transmission function, the data switching device also has processing functions such as data type conversion/switching. Therefore, the data switching device usually needs to have a built-in power supply, and use the built-in power supply to maintain data transmission, switching, etc. Function. However, for a data transfer device without a built-in power supply, it cannot maintain the above functions. However, the weight of the built-in power supply itself is relatively heavy, which is a big burden for the data transfer device that needs to be light and handy. Without a built-in power supply, it will cause data transmission, transfer and other functions that cannot be maintained. Therefore, Become an unsolvable technical problem in the prior art. The data switching device provided by the embodiment of the utility model can use the first interface to connect with the first external device, and use the power input pin in the first interface to receive the electric energy input from the outside. That is, the data switching device of the embodiment of the utility model can use the external power supply to realize its own power supply and maintain the data transmission function, so that the data switching device is more versatile; and, because the data switching device itself does not need to have a built-in The power supply reduces the weight, making the data switching device lighter, more portable, more convenient to use, and increasing its application range.

In addition, the first interface 310 also includes at least one data pin 313 for transmitting data signals. As mentioned above, those skilled in the art can recognize that the number of such data pins is specifically determined according to actual needs.

The first interface 310 of the data transfer device 300 may be a common HDMI interface, DVI interface or USB interface. In some embodiments of the present invention, a five-core USB interface is preferably used, more preferably a five-core USB male socket interface is used as the first interface 310 of the data transfer device 300 of the present invention.

In particular, the power input pin 311 of the first interface 310 is the ID pin of the five-core USB interface, the power output pin 312 of the first interface 310 is the VCC pin of the five-core USB interface, and the first interface 310 At least one data pin 313 is a D+ pin and/or a D- pin of a five-wire USB interface.

In a preferred embodiment, the second interface 320 is an audio interface, such as a MIC plug or an earphone plug.

FIG. 4A shows a schematic block diagram of a part of the trigger circuit in the data switching device 300 according to an embodiment of the present invention. In an optional implementation manner in this embodiment, as shown in FIG. 4A , the trigger circuit 330 includes: a trigger component 331 and a controllable switch 332; the trigger component 331 is connected in series between the second interface 320 and the controllable switch 332 Between one end, the second end of the controllable switch 332 is electrically connected to the power input pin 311, and the third end of the controllable switch 332 is electrically connected to the power output pin 312; When 320 receives the trigger signal, it turns on the controllable switch 332 .

In specific implementation, as an optional manner, the controllable switch 332 includes at least a MOS transistor (such as an N-type MOS transistor), the first end of the controllable switch is the gate of the MOS transistor, and the second end of the controllable switch is the source of the MOS transistor, and the third end of the controllable switch is the drain of the MOS transistor; the trigger component is configured to turn on the MOS transistor when receiving a trigger signal from the second interface.

In addition, the controllable switch also includes a bias resistor R2, and the bias resistor R2 is connected in series between the edge and the gate of the MOS transistor.

FIG. 4B shows a schematic circuit diagram of a part of trigger circuits in the data switching device 300 according to an embodiment of the present invention. Referring to FIG. 4B , the first interface of the data transfer device 300 is a five-core USB interface, the second interface is a MIC plug, and the two are connected by a trigger circuit 330 . In order not to obscure or cover up the improvement of the utility model in the data switching device 300, only the main part of the trigger circuit is shown in FIG. 4B, and the remaining parts that may exist in the trigger circuit are well known and easily implemented by those skilled in the art. , which will not be described in this paper.

In an optional implementation manner in this embodiment, as shown in FIG. 4B , the trigger component includes: a bias resistor R3, a resistor R1, a PNP diode Q3 and an NPN diode Q1, and the base of Q3 is connected to The second interface is the MIC interface. The emission set of Q3 is connected to the power input pin (ID pin) to receive the external input power VBAT. A bias resistor R3 is connected between the emission set and the base of Q3. The function of R3 is When there is no trigger signal, the level of the base of Q3 is pulled up to VBAT, so that Q3 will not be turned on, and when the trigger signal (high level signal) is received, Q3 is turned on, and the collector of Q3 passes through R1 Connected to the base of NPN diode Q1, when Q3 is turned on, the level of VCC1 is VBAT, so that Q1 is turned on, and the emitter of Q1 is connected to GND. When Q1 is turned on, the gate of Q2 (P-channel MOS) The level of the electrode is pulled down to a low level, at this time, Q2 is turned on, the source of Q2 is connected to the power input pin (ID pin), and receives the externally input power VBAT, and the drain of Q2 is connected to the power output pin ( VCC pin), VBUS shown in the figure, when Q2 is turned on, connect the ID pin and VCC pin, that is, VBAT and VBUS are connected. The bias resistor R2 is connected in series between the edge and the gate of the MOS transistor. The bias resistor R2 has two functions: when the trigger signal is not received, R2 pulls up the level of the gate of Q2 to make Q2 cut off; When the trigger signal is received, the current is limited (the VBAT will not be directly connected to GND), and the voltage is pulled down to a low level at the same time, so that Q2 is turned on. Thus, when the data switching device 300 is connected to a second external device (such as a mobile phone), a high-level signal (trigger signal) is received from the MIC interface, and VBAT and VBUS can be turned on, so that the connection with the data switching device 300 The corresponding ID pin and VCC pin of the first external device connected to the first interface CN2 are also connected, and the first external device can start to supply power.

As shown in FIG. 5 , the present invention also provides a data interaction component, which includes the key device 100 of the present invention and the data transfer device 300 of the present invention. In such a data interaction component, the external connection interface 120 of the key device 100 and the first interface 310 of the data transfer device 300 are configured to be operatively connected to each other, so that the key device 100 can be used as an interface with the data transfer device 300 connected first external device. Wherein, the power output pin 121 of the external connection port 120 of the key device 100 and the power input pin 311 of the first interface 310 of the data switching device 300 are configured to be operatively connected to each other, and the external connection of the key device 100 The power input pin 122 of the port 120 and the power output pin 312 of the first interface 310 of the data switching device 300 are configured to be operatively connected to each other.

In the prior art, the data switching device usually has a built-in power supply, and uses the built-in power supply to maintain the function of data transmission. However, for a data transfer device without a built-in power supply, it cannot maintain the data transmission function. Therefore, the data switching device provided by the utility model is combined with the key device to form a data interaction component, and the built-in power supply of the key device is used to supply power to the data switching device to realize the data transmission function, so that even if the data switching device does not have The built-in power supply can also be powered by other key devices with built-in power supply, making the data transfer device more versatile.

As shown in Figure 6, the utility model also provides a data interaction system, which includes: the key device 100 of the utility model (as shown in Figure 1), the data transfer device 300 of the utility model (as shown in Figure 3 shown) and terminal device 600. In such a data interaction system, the external connection interface 120 of the key device 100 and the first interface 310 of the data transfer device 300 are configured to be operatively connected to each other, so that the key device 100 can be used as a data transfer device 300 connected to the first external device; a terminal interface 610 of the terminal device 600 and the second interface 320 of the data switching device 300 are configured to be operatively connected to each other, so that the terminal device 600 is used to connect to the data switching device 300 the second external device.

A further purpose of the utility model is to make the data interaction system of the utility model, after the necessary cable connection is completed, the built-in power supply in the key device can be used to automatically connect the key device and the data transfer device For power supply, no special manual operation is required by the user, and it is easy to use and has a wide range of applications.

Fig. 7 shows a schematic circuit diagram of a data interaction system according to an embodiment of the present invention. The external connection port (CN1) of the key device 100 is connected to the first port (CN2) of the data transfer device 300, wherein the two pins with the same identification are interconnected in a one-to-one correspondence. The ID pin in CN1 is connected to the anode of the built-in power supply of the key device 100 or the power supply terminal VBAT, and the GND pin in CN1 is connected to the cathode of the built-in power supply or the grounding terminal GND. When the second interface (MIC plug shown in the figure) of the data switching device 300 is plugged into a terminal device (such as a smart phone), a voltage signal can be received from the terminal device. This voltage signal can turn on the transistor Q3, and VCC1 connected to Q3 is connected to VBAT. Due to the voltage of VCC1, the triode Q1 and Q2 are turned on, so that VBUS and VBAT are connected. Since VBUS is connected to the VCC pin of CN2 of the data transfer device 300, and this pin is connected to the VCC pin of CN1 of the key device 100 at this time, it is possible to use VBUS to provide power to the key device 100, so that the key The device 100 can perform data interaction with the terminal device via the data switching device 300 .

The data transfer device of the present utility model is combined with the key device to form a data interaction component, and the data transfer device is used to receive the trigger signal from the terminal device, and the power input pin of the trigger first interface is connected to the power input pin, thereby externally The power supply is to at least start the key device to work, which completes the premise that the key device supplies power to the outside, and provides a basis for the subsequent key device to supply power to other external devices (including data transfer devices). The data switching device is configured to communicate with the power output pin and the power input pin of the first interface after the second interface receives the trigger signal, so that in the device starting method according to the utility model, only when the entire system is correctly connected And the key device will start to work after the corresponding external device is started, which effectively reduces the unnecessary power consumption of the built-in power supply of the key device, and significantly prolongs the use time of a replacement or charging of the built-in power supply of the key device.

The data transfer device of the utility model is combined with the key device to form a data interaction component, and the built-in power supply of the key device is used to supply power to the data transfer device to realize the data transmission function, so that even if the data transfer device does not have a built-in power source, It can also be powered by other key devices with built-in power supply, making the data transfer device more versatile.

So far, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, they can still be used according to the present invention without departing from the spirit and scope of the present invention. Many other variations or modifications that conform to the principles of the utility model are directly determined or derived from the disclosed content of the new model. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (14)

1. a key devices, comprises onboard data process memory circuit, built-in power and outer connector, it is characterized in that, described outer connector comprises:

Electric energy output pin, is configured to be communicated with described built-in power, outwards to export electric energy; With

Electric energy input pin, is configured to be communicated with described electric energy output pin by external control, starts as described key devices is powered, start described onboard data process memory circuit and carry out work to start described built-in power.

2. key devices according to claim 1, is characterized in that,

Described outer connector also comprises at least one data pin, for transmission of data signals.

3. key devices according to claim 2, is characterized in that,

Described outer connector is five heart yearn USB interface;

The electric energy output pin of described outer connector is the ID pin of described five heart yearn USB interface;

The electric energy input pin of described outer connector is the VCC pin of described five heart yearn USB interface; And

At least one data pin of described outer connector is D+ pin and/or the D-pin of described five heart yearn USB interface.

4. key devices according to claim 3, is characterized in that,

Described outer connector is five heart yearn USB female seat interfaces.

5. a data switching device, comprising the first interface for connecting the first external unit, for connecting the second interface of the second external unit, it is characterized in that,

Also comprise: be connected to the trigger circuit between described first interface and described second interface, be configured to when described second interface receives trigger pip from described second external unit, the electric energy output pin of described first interface is communicated to the electric energy input pin of described first interface;

Described first interface comprises:

Electric energy input pin, is configured to, from outside input electric energy, provide electric energy with the work being at least described data switching device; With

Electric energy output pin, is configured to controllably be communicated to described electric energy input pin according to described trigger pip.

6. data switching device according to claim 5, is characterized in that, described trigger circuit comprise: trigger unit and gate-controlled switch;

Described trigger unit is connected between described second interface and the first end of described gate-controlled switch, and the second end of described gate-controlled switch is electrically connected with described electric energy input pin, and the 3rd end of described gate-controlled switch is electrically connected with described electric energy output pin;

Described trigger unit, is configured to, when described second interface receives trigger pip from described second external unit, be communicated with by the second end of described gate-controlled switch with the 3rd end.

7. data switching device according to claim 6, is characterized in that,

Described gate-controlled switch at least comprises metal-oxide-semiconductor, and the first end of described gate-controlled switch is the grid of described metal-oxide-semiconductor, and the second end of described gate-controlled switch is the source electrode of described metal-oxide-semiconductor, and the 3rd end of described gate-controlled switch is the drain electrode of described metal-oxide-semiconductor;

Described trigger unit, is configured to when from described second interface to trigger pip, by described metal-oxide-semiconductor conducting.

8. data switching device according to claim 7, is characterized in that,

Described gate-controlled switch also comprises biasing resistor, and described biasing resistor is connected between the edge pole of described metal-oxide-semiconductor and grid.

9. data switching device according to claim 5, is characterized in that,

Described first interface also comprises at least one data pin, for transmission of data signals.

10. data switching device according to claim 9, is characterized in that,

Described first interface is five heart yearn USB interface;

The electric energy input pin of described first interface is the ID pin of described five heart yearn USB interface;

The electric energy output pin of described first interface is the VCC pin of described five heart yearn USB interface;

At least one data pin of described first interface is D+ pin and/or the D-pin of described five heart yearn USB interface.

11. data switching devices according to claim 10, is characterized in that,

Described first interface is five heart yearn USB male seat interfaces.

12. data switching devices according to any one of claim 5 to 11, is characterized in that,

Described second interface is audio interface.

13. 1 kinds of data interaction component, is characterized in that comprising:

Key devices described in any one of Claims 1-4; With

Data switching device described in any one of claim 5 to 12, the outer connector of wherein said key devices and the first interface of described data switching device are configured to operationally to be connected to each other, and described key devices is used as the first external unit be connected with described data switching device;

Wherein, the electric energy input pin of the electric energy output pin of the outer connector of described key devices and the first interface of described data switching device is configured to operationally to be connected to each other, and the electric energy output pin of the electric energy input pin of the outer connector of described key devices and the first interface of described data switching device is configured to operationally to be connected to each other.

14. 1 kinds of data interaction systems, is characterized in that comprising:

Key devices described in any one of Claims 1-4;

Data switching device described in any one of claim 5 to 12, the outer connector of wherein said key devices and the first interface of described data switching device are configured to operationally to be connected to each other, thus make described key devices be used as the first external unit be connected with described data switching device; With

Terminal device, a terminal interface of wherein said terminal device becomes can operationally be connected to each other with the second interface configuration of described data switching device, thus makes described terminal device be used as the second external unit be connected with described data switching device.