Anti-eavesdropping external device and system

Abstract

The utility model relates to the technical field of audio equipment, in particular to an anti-eavesdropping external device and system. Comprising a shell, an audio control module, a first connection module, a quick charge control module and a second connection module, the audio control module comprises a plurality of built-in audios, the audio control module is connected with an external terminal through the first connection module so as to obtain the audio control authority of the external terminal, the second connection module is connected with the input end of the fast charging control module, and the output end of the fast charging control module is connected with the first connection module so as to fast charge the terminal; the audio control module is used for controlling the input of the audio signal of the terminal equipment, so that the terminal equipment cannot record the sound around the terminal, the terminal equipment can be effectively prevented from malicious eavesdropping and collecting the sound and conversation content around the terminal, and the privacy of a user is effectively protected; the anti-eavesdropping external device not only can prevent terminal eavesdropping, but also can quickly charge the terminal, and is higher in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to audio equipment technical field, especially a kind of anti-interception external device and system. BACKGROUND

[0002] With the rapid development of Internet technology and the increasing popularity of Internet external terminals, people have entered the digital Internet era, and at the same time, user privacy interception events based on Internet external terminals occur from time to time. For example, the interception party can start the microphone of the external terminal without the knowledge of the intercepted party by installing software in the external terminal of the intercepted party, thereby achieving interception of the intercepted party; In order to prevent the occurrence of interception events, there are currently some solutions, such as adding a microphone permission switch for each APP in the settings, which prevents the microphone from collecting environmental audio and thus achieves the function of preventing interception. This method is very cumbersome to operate.

[0003] Therefore, it is crucial for those skilled in the art to design an anti-interception external device that is easy to operate and has high practicality. INVENTION CONTENTS

[0004] The technical problem to be solved by the embodiments of the utility model is to provide an anti-interception external device that is easy to operate and has high practicality, to solve the problem of cumbersome operation caused by the need for permission setting for individual software in the prior art.

[0005] The utility model discloses an anti-interception external device, and the scheme is characterized by comprising: a shell, an audio control module, a first connection module, a fast charging control module, and a second connection module; the first connection module is used for connecting an external terminal, the second connection module is used for connecting a power adapter, the audio control module comprises a plurality of built-in audio, the audio control module is connected to the external terminal through the first connection module to obtain the audio control permission of the external terminal and send the built-in audio to the external terminal, the second connection module is connected to the voltage input end of the fast charging control module, and the voltage output end of the fast charging control module is connected to the first connection module to charge the external terminal.

[0006] Optionally, the first connection module is a Micro-USB connector, a Type-C connector, or a Lighting connector.

[0007] Optionally, the first connection module comprises a CC pin, the CC pin of the first connection module is connected to the fast charging control module to perform protocol handshake, and the CC pin of the first connection module is also used for connecting the external terminal to perform insertion detection.

[0008] Optionally, the first connection module and the audio control module each comprise a signal transmission pin, and the signal transmission pin of the first connection module is connected with the signal transmission pin of the audio control module.

[0009] Optionally, the second connection module is a Micro-USB connector, a Type-C connector or a Lighting connector, the second connection module comprises a CC pin, and the CC pin of the second connection module is connected with the fast charging control module to perform protocol handshake.

[0010] Optionally, the fast charging control module further comprises a power output end, the power output end is connected with the audio control module to provide voltage for the audio control module.

[0011] Optionally, a wireless communication module is further included, and the audio control module is connected with the wireless communication module to perform wireless data transmission with an external terminal through the wireless communication module.

[0012] Optionally, an indicator lamp is further included, and the indicator lamp is arranged on the surface of the shell and is electrically connected with the audio control module.

[0013] To solve the problems in the prior art, the utility model further provides a kind of anti-interception external system, and its scheme is to include: terminal, shell, audio control module, first connection module, fast charging control module and second connection module;The first connection module is used to access the terminal, the audio control module includes multiple built-in audio, the audio control module is connected with the terminal by the first connection module to obtain the audio control authority of the terminal and send built-in audio to the terminal, the second connection module is connected with the input end of the fast charging control module, and the output end of the fast charging control module is connected with the first connection module to be used to the terminal fast charging.

[0014] Optionally, a power adapter is further included, and the power adapter is connected with the second connection module to be used to the terminal fast charging.

[0015] Compared with the prior art, the anti-eavesdropping external device has the beneficial effects that: the anti-eavesdropping external device is designed, the audio control module is connected to the external terminal device through the first connecting module to obtain the audio control authority of the external terminal device, so that the input of the terminal device audio signal is controlled, and the audio control module is only internally provided with preset audio and cannot obtain audio from the surrounding environment, so that the external terminal device cannot record the sound around the terminal, the malicious eavesdropping and collection of the sound and conversation content around the terminal device are effectively prevented, the privacy of the user is effectively protected, and the use safety of the terminal device is improved; further, the fast charging control module and the second connecting module are arranged in the anti-eavesdropping external device, so that the anti-eavesdropping external device can not only prevent the terminal device from maliciously eavesdropping the user's voice, but also can charge the terminal device, so that the practicability of the anti-eavesdropping external device is higher. BRIEF DESCRIPTION OF DRAWINGS

[0016] The technical scheme of the utility model will be further explained in detail below in combination with the drawings and embodiments, and the drawings are as follows:

[0017] Figure 1 is a structure schematic view of an anti-eavesdropping external device provided by the utility model embodiment;

[0018] Figure 2 is a circuit diagram of the first connecting module provided by the utility model embodiment;

[0019] Figure 3 is a circuit diagram of the fast charging control chip provided by the utility model embodiment;

[0020] Figure 4A 、 Figure 4B 、 Figure 4C 、 Figure 4D all are circuit diagrams of the audio control chip provided by the utility model embodiment;

[0021] Figure 5 is a circuit diagram of the second connecting module provided by the utility model embodiment;

[0022] Figure 6 is a structure schematic view of an anti-eavesdropping external system provided by the utility model embodiment.

[0023] The various reference signs in the drawings are as follows:

[0024] 100, shell; 200, audio control module; 300, first connecting module; 400, fast charging control module; 500, second connecting module; 600, indicator light; U1, fast charging control chip; U2, audio control chip; terminal 10; power adapter 20. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. In combination with the drawings, the preferred embodiments of the present application are described in detail.

[0026] As shown in Figures 1 to 5 , the present application provides a specific embodiment of an eavesdropping-proof external device.

[0027] An eavesdropping-proof external device, referring to Figure 1 , the eavesdropping-proof external device comprises a shell 100, an audio control module 200, a first connection module 300, a fast charging control module 400 and a second connection module 500; the first connection module 300 is used for connecting an external terminal, the second connection module 500 is used for connecting a power adapter, the audio control module 200 comprises a plurality of built-in audios, the audio control module 200 is connected with the external terminal through the first connection module 300 to obtain the audio control authority of the external terminal and send the built-in audio to the external terminal, the second connection module 500 is connected with the voltage input end of the fast charging control module 400, and the voltage output end of the fast charging control module 400 is connected with the first connection module 300 to be used for fast charging the external terminal.

[0028] Specifically, referring to Figure 1 , the shell 100 is the shell of the eavesdropping-proof external device, the audio control module 200 and the fast charging control module 400 are arranged in the shell 100, and the first connection module 300 and the second connection module 500 are arranged on the shell 100 to be respectively used for connecting the external terminal device and the power adapter.

[0029] Further, the first connection module 300 is used for connecting the audio control module 200 and the external terminal device, the external terminal device refers to a terminal device with a built-in microphone device, such as a mobile phone, etc., the first connection module 300 supports an audio transmission protocol such as USB Audio Class protocol, the USB Audio Class defines a set of standard audio data formats and communication protocols, so that the audio control module 200 can communicate with a computer, a mobile phone or other host devices without specific drivers; after the audio control module 200 is connected to the external terminal device through the first connection module 300, the first connection module 300 can transmit a trigger signal to the terminal device, which is connected to the audio control module 200, to obtain the audio control authority transmitted back by the external terminal device based on the trigger signal.

[0030] When the audio control module 200 obtains the audio control authority of the external terminal device, it can transmit audio to the external terminal device. The audio control module 200 is built-in with multiple audios. The audio built-in in the audio control module 200 can be white noise. The white noise can be generated by using a random number sequence generated by a pseudo-random number generator and directly output as a waveform, or mapped to a specific voltage or audio value. The white noise can also be generated by phenomena such as thermal noise of transistors and diodes in an analog circuit.

[0031] The audio built-in in the audio control module 200 can also be colored noise. The colored noise can be generated by adding a filter to the white noise to control the frequency components of the frequency spectrum to produce different colored noises. For example, by attenuating the high-frequency part through a low-pass filter, a pink noise formed by frequency components proportional to 1 / f, or by further increasing the attenuation, a brown noise with a frequency spectrum proportional to 1 / f2, the sound is lower, or by high-pass filtering to enhance the high-frequency part, the sound is biased to high frequencies. Blue noise or purple noise.

[0032] The audio built-in in the audio control module 200 can also be audio generated by mathematical functions, such as audio signals similar to white noise generated by Gaussian distribution, or noise with specific statistical properties generated by different distribution functions such as Poisson distribution, exponential distribution, and uniform distribution.

[0033] The audio built-in in the audio control module 200 can also be audio obtained by sampling and transformation, such as random noise with specific spectral characteristics generated by inverse FFT transformation to generate a set of random frequency domain data, and then inverse FFT transformation back to the time domain, or specific spectral characteristics of random noise generated by inverse convolution method.

[0034] With the popularity of smart phones and the rapid development of application programs, user privacy security issues have received increasing attention. In recent years, some malicious mobile phone applications can start the microphone and record the sound around the terminal without the user's knowledge, which has caused widespread concern and seriously infringed the user's privacy rights. Currently, the only way to close the microphone permission of the corresponding software in the phone settings. On the one hand, users are difficult to detect which software has a microphone permission, and on the other hand, manually closing the microphone permission of numerous software is very cumbersome.

[0035] In the embodiment, the audio control module is connected to the external terminal device through the first connecting module to obtain the audio control right of the external terminal device, so as to control the input of the audio signal of the terminal device, and the audio control module is only internally provided with preset audio and cannot obtain audio from the surrounding environment, so that the external terminal device cannot record the sound and conversation content around the terminal, the malicious eavesdropping and collection of the sound and conversation content around the terminal can be effectively prevented, the privacy of the user is effectively protected, and the use safety of the terminal device is improved.

[0036] Further, with reference to Figure 1 , the anti-eavesdropping external device further comprises a fast charging control module 400 and a second connecting module 500, the second connecting module 500 is used for connecting a power adapter to obtain electric energy, a voltage input end of the fast charging control module 400 is connected with the second connecting module 500 to obtain an input voltage, a voltage output end of the fast charging control module 400 is connected with the first connecting module 300, the fast charging control module 400 has a fast charging protocol, the fast charging control module 400 can convert the input voltage into a fast charging voltage required by the accessed terminal device, and the converted fast charging voltage is provided to the accessed terminal device through the first connecting module 300, so as to realize the fast charging of the terminal device.

[0037] In the embodiment, the fast charging control module 400 and the second connecting module 500 are arranged in the anti-eavesdropping external device, so that the anti-eavesdropping external device not only can prevent the malicious eavesdropping of the terminal device to the user sound, but also can fast charge the terminal device, so that the practicality of the anti-eavesdropping external device is higher.

[0038] In one of the embodiments, the first connecting module 300 is a Micro-USB connector, a Type-C connector or a Lighting connector; the Micro-USB connector is used for connecting mobile devices and some electronic devices such as tablet computers and digital cameras to transmit data and charge, the Micro-USB connector has the characteristics of small size, convenience and durability; the Type-C connector is used for connecting various electronic devices such as smart phones, notebook computers and tablet computers to transmit data and charge, the Type-C connector supports higher data transmission speed and larger power transmission capacity, and the Type-C connector adopts reversible design, so that the plug can be inserted in any direction, making the operation more convenient; the Lighting connector is used for connecting devices with iOS system to transmit data and charge the devices with iOS system.

[0039] When the first connecting module 300 is the Type-C connector, the specific circuit thereof is as shown in Figure 2 .

[0040] In one of the embodiments, referring to Figure 1 and Figure 3 , the fast charging control module 400 comprises a fast charging control chip U1, the fast charging control chip U1 is provided with a CC pin for protocol handshake, the first connection module 300 comprises a CC pin and a signal transmission pin, the CC pin of the first connection module 300 is connected with the CC pin of the fast charging control chip U1 to perform protocol handshake, and the CC pin of the first connection module 300 can also be used for protocol communication with the external terminal device when the external terminal device is accessed, so as to realize the insertion detection of the audio control module 200 and obtain the audio control right and the data transmission right of the external terminal device.

[0041] Referring to Figure 1 , Figure 4A , Figure 4B , Figure 4C and Figure 4D , the signal transmission pin of the first connection module 300 comprises a DP pin and a DM pin, the audio control module 200 comprises an audio control chip U2, the audio control chip U2 is also provided with a DP pin and a DM pin for signal transmission, the DP pin of the first connection module 300 is connected with the DM pin of the audio control chip U2, and the DM pin of the first connection module 300 is connected with the DP pin of the audio control chip U2 for audio signal transmission; wherein the audio control chip U2 can specifically adopt an SNC8600 chip.

[0042] In one of the embodiments, the second connection module 500 is a Micro-USB connector, a Type-C connector or a Lighting connector, the second connection module 500 comprises a CC pin, and the CC pin of the second connection module 500 is connected with the fast charging control module 400 to perform protocol handshake.

[0043] Specifically, the second connection module 500 can also adopt a Micro-USB connector, a Type-C connector or a Lighting connector; the Micro-USB connector is used for connecting mobile devices and some electronic devices similar to tablet computers, digital cameras and the like to transmit data and charge, the Micro-USB connector has the characteristics of small size and convenience and durability; the Type-C connector is used for connecting various electronic devices, such as smart phones, notebook computers, tablet computers and the like, to transmit data and charge, the Type-C connector supports higher data transmission speed and larger power transmission capacity, and the Type-C connector adopts reversible design, the plug can be inserted in any direction, so that the operation is more convenient; the Lighting connector is used for connecting devices with iOS system to transmit data and charge the devices with iOS system.

[0044] The second connection module 500 also has a CC pin, and the CC pin of the second connection module 500 is connected with the CC pin of the fast charging control chip U1 to realize the fast charging protocol handshake; when the second connection module 500 is a Type-C connector, the specific circuit thereof is as shown in Figure 5 .

[0045] In one of the embodiments, referring to Figure 1 and Figure 3 , the fast charging control module 400 further comprises a power output end which is a 5V output pin arranged on the fast charging control chip U1, and the 5V output pin on the fast charging control chip U1 is connected with the audio control module 200 to provide 5V voltage for the audio control module 200; wherein the audio control module 200 can take power from the external terminal device through the first connection module 300, and can also obtain 5V voltage through the fast charging control module 400 to realize power supply.

[0046] In one of the embodiments, the anti-interception external device further comprises a wireless communication module, and the audio control module 200 is connected with the wireless communication module to perform wireless data transmission with the external terminal through the wireless communication module; specifically, the audio control module 200 can transmit audio signals with the external terminal device through the first connection module 300, and can also perform wireless transmission of audio signals with the external terminal device through the wireless communication module.

[0047] In one of the embodiments, referring to Figure 1 , the anti-interception external device further comprises an indicator light 600, and the indicator light 600 is arranged on the surface of the shell 100 and is electrically connected with the audio control module 200; the indicator light 600 can be triggered to light up by the anti-interception external device, and the user can be reminded of incoming calls or audio output through the preset states such as flashing or long lighting of the indicator light 600.

[0048] As shown in Figure 6 , the utility model further provides a specific embodiment of the anti-interception external system.

[0049] An anti-interception external system, referring to Figure 6 , the anti-interception external system comprises a terminal 10, a shell 100, an audio control module 200, a first connection module 300, a fast charging control module 400 and a second connection module 500; the first connection module 300 is used for accessing the terminal 10, the audio control module 200 comprises a plurality of built-in audio, the audio control module 200 is connected with the terminal through the first connection module 300 to obtain the audio control authority of the terminal 10 and send the built-in audio to the terminal 10, the second connection module 500 is connected with the input end of the fast charging control module 400, and the output end of the fast charging control module 400 is connected with the first connection module 300 to charge the terminal 10.

[0050] Specifically, the anti-eavesdropping external system further comprises a power adapter 20, the audio control module 200 and the fast charging control module 400 are arranged in the shell 100, and the first connection module 300 and the second connection module 500 are arranged on the shell 100, so as to be respectively connected with the terminal 10 and the power adapter 20 outside the shell 100.

[0051] The terminal 10 refers to a terminal device with a built-in microphone device, such as a mobile phone, etc., the terminal, the first connection module 300 and the audio control module 200 all support an audio transmission protocol such as USB Audio Class protocol, the USB Audio Class defines a set of standard audio data formats and communication protocols, so that the audio control module 200 can communicate with the terminal without specific drivers; after the audio control module 200 is connected to the terminal 10 through the first connection module 300, the first connection module 300 can transmit a trigger signal to the terminal 10, so as to obtain the audio control permission transmitted back by the terminal 10 based on the trigger signal.

[0052] The audio control module 200 is built-in with multiple audios, and after the audio control module 200 obtains the audio control permission of the terminal 10, it can control the input of the audio signal of the terminal 10, and the audio control module 200 is only built-in with preset audios and cannot obtain audios from the surrounding environment, so that the terminal 10 cannot record the sound around the terminal, which can effectively prevent the terminal 10 from maliciously eavesdropping and collecting the sound and conversation content around the terminal, effectively protect the privacy of the user, and improve the use safety of the terminal 10.

[0053] The anti-eavesdropping external system further comprises a fast charging control module 400 and a second connection module 500, the second connection module 500 is used to connect the power adapter 20 to obtain electric energy, the voltage input end of the fast charging control module 400 is connected with the second connection module 500 to obtain the input voltage, the voltage output end of the fast charging control module 400 is connected with the first connection module 300, the fast charging control module 400 has a fast charging protocol, and the fast charging control module 400 can convert the input voltage into the fast charging voltage required by the connected terminal 10, and provide the converted fast charging voltage to the terminal 10 through the first connection module 300, so as to realize the fast charging of the terminal 10.

[0054] Among them, by arranging the fast charging control module 400 and the second connection module 500 in the anti-eavesdropping external system, the anti-eavesdropping external system not only can prevent the terminal from maliciously eavesdropping the user's voice, but also can charge the terminal 10, so that the practicality of the anti-eavesdropping external system is higher.

[0055] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them, and for those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features therein can be replaced equivalently; and all these modifications and replacements shall belong to the protection scope of the present application.

Claims

1. A tap-proof add-on device, characterized in that The shell, the audio control module, the first connection module, the fast charging control module, and the second connection module; the first connection module is used for accessing an external terminal, the second connection module is used for connecting a power adapter, the audio control module includes a plurality of built-in audio, the audio control module is connected with the external terminal through the first connection module to obtain the audio control authority of the external terminal and send the built-in audio to the external terminal, the second connection module is connected with the voltage input end of the fast charging control module, and the voltage output end of the fast charging control module is connected with the first connection module to be used for fast charging the external terminal. The first connection module is a Micro-USB connector, a Type-C connector or a Lighting connector.

2. The anti-eavesdropping add-on device of claim 1, wherein, The first connection module includes a CC pin, the CC pin of the first connection module is connected with the fast charging control module to perform protocol handshake, and the CC pin of the first connection module is also used for connecting the external terminal to perform insertion detection.

3. The anti-eavesdropping add-on device of claim 1, wherein, The first connection module and the audio control module both include signal transmission pins, the signal transmission pins of the first connection module are connected with the signal transmission pins of the audio control module.

4. The anti-eavesdropping add-on device of claim 1, wherein, The second connection module is a Micro-USB connector, a Type-C connector or a Lighting connector, the second connection module includes a CC pin, and the CC pin of the second connection module is connected with the fast charging control module to perform protocol handshake.

5. The anti-eavesdropping add-on device of claim 1, wherein, The fast charging control module further includes a power output end, the power output end is connected with the audio control module to be used for providing voltage for the audio control module.

6. The anti-eavesdropping add-on device of claim 1, wherein, Further comprising a wireless communication module, the audio control module is connected with the wireless communication module to perform wireless data transmission with the external terminal through the wireless communication module.

7. The anti-eavesdropping add-on device of claim 1, wherein, Further comprising an indicator light, the indicator light is arranged on the surface of the shell and is electrically connected with the audio control module.

8. The anti-eavesdropping add-on device of claim 1, wherein, The terminal, the shell, the audio control module, the first connection module, the fast charging control module, and the second connection module; the first connection module is used for accessing the terminal, the audio control module includes a plurality of built-in audio, the audio control module is connected with the terminal through the first connection module to obtain the audio control authority of the terminal and send the built-in audio to the terminal, the second connection module is connected with the input end of the fast charging control module, and the output end of the fast charging control module is connected with the first connection module to be used for fast charging the terminal.

9. A tap-proof add-on system, characterized in that Further comprising a power adapter, the power adapter is connected with the second connection module to be used for fast charging the terminal. ​ 10. The anti-eavesdropping add-on system of claim 9, wherein, ​

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