RU207342U1 - DEVICE FOR PROTECTING ACOUSTIC INFORMATION FROM SECRET RECEIVING BY PORTABLE DEVICE - Google Patents

Abstract

The invention relates to the field of protection of speech information, and more specifically to a device for preventing the tacit reception of acoustic signals by portable devices located therein. The technical result achieved by the implementation of the specified solution consists in increasing the efficiency of protecting speech information from secret receipt by a portable device. A device for protecting acoustic information from secret receipt by a portable device contains: a shielding body, including: a sound-absorbing layer; locking mechanism; storage cells for portable devices: an ultrasonic noise generator configured to generate an ultrasonic noise signal; an acoustic noise generator configured to generate a noise signal; ultrasonic emitters; acoustic emitters; power supply; shielded connector; networking module. 6 c.p. f-ly, 3 dwg

Description

FIELD OF TECHNOLOGY

[1] The utility model relates to the field of protection of speech information, and more specifically to a device for preventing the tacit reception of acoustic signals by portable devices located therein.

LEVEL OF TECHNOLOGY

[2] Nowadays, portable computing devices such as cell phones, smartphones, tablets, smartwatches, etc., are becoming indispensable personal accessories in society. As a rule, such devices have the ability to record sound and video, and also have the ability to transmit / receive information via radio frequency channels, such as cellular channels, Wi-Fi, Bluetooth, etc. The use of channels for receiving / transmitting information makes portable devices vulnerable to hacking and, as a result, objects of attacks by cybercriminals in order to gain access to confidential data of device users, including speech information.

[3] Thus, in many cases, hacking of portable devices goes unnoticed, and an attacker can gain unhindered access to confidential information. For example, an attacker can remotely activate the microphone of a portable device and listen to the user's telephone conversations via radio frequency transmit / receive channels. The microphone can also be configured by an intruder to record external speech information ("voice recorder" function) and then transmit it to another electronic device located remotely. Eavesdropping on the user's portable device can lead to unauthorized receipt of confidential data not only of the user himself, but also of confidential data of organizations and other structures in which such a user may work or be associated with them, which can have serious consequences.

[4] Therefore, preventing the possibility of unauthorized eavesdropping on a user through his portable device is an essential task.

[5] So, from the prior art known protective cover for radio electronic devices, disclosed in the patent of the Russian Federation No. RU 181105 U1 (Open Joint Stock Company "SvetlogorskKhimvolokno"), publ. 04.07.2018. The specified case is designed to accommodate a portable device and contains a protective layer of graphitized carbon fiber material that provides protection against electromagnetic waves.

[6] The disadvantages of this solution can be attributed to the low degree of security of such a cover due to the lack of the ability to protect the user's speech information from writing, which makes it possible to delayed transmission of confidential information after removing the portable device from the cover. In addition, the specified cover does not imply the ability to track telemetry indicators, which also reduces its security. Also, this case is not intended to protect multiple portable devices at the same time.

[7] The general drawbacks of existing solutions in this area is the lack of a high degree of security that allows monitoring indicators and controlling the time of use of the device for protecting acoustic (speech) information of the owner of a portable device from unauthorized listening, eavesdropping, recording using the specified portable device. In addition, this kind of device should also provide masking of the speech signal, making it illegible, and provide the ability to simultaneously protect multiple devices, while maintaining portability and compactness.

ESSENCE OF THE TECHNICAL SOLUTION

[8] This technical solution is aimed at eliminating the disadvantages inherent in existing solutions known from the prior art.

[9] The claimed solution allows to solve a technical problem in terms of creating a new and effective device for protecting acoustic information from secret receipt by a portable device.

[10] The main technical result is to increase the efficiency of protecting acoustic information from secret receipt by a portable device.

[11] Also, due to the creation of the claimed device, the arsenal of technical means of devices for protecting acoustic information from secret receipt by a portable device is expanding.

[12] The claimed technical results are achieved through the implementation of a device for protecting acoustic information from secret receipt by a portable device, containing:

a shielding body made of a conductive material that prevents the passage of electromagnetic radiation, including:

sound absorbing layer; about the locking mechanism;

storage cells for portable devices:

an ultrasonic noise generator configured to generate an ultrasonic noise signal;

an acoustic noise generator configured to generate a noise signal;

ultrasonic emitters located in each storage compartment of the portable device, configured to transmit the noise signal generated by the ultrasonic interference generator to the area of the input / output means of the portable device located in this compartment; moreover, in each cell there are two ultrasonic emitters directed to the upper and lower parts of the cell;

acoustic emitters located in each cell for storing portable devices, configured to translate the noise signal generated by the acoustic interference generator into the area of the input / output means of the portable device located in this cell; moreover, in each cell there are two acoustic emitters directed to the upper and lower parts of the cell;

power supply;

shielded connector;

a network communication module configured to connect to a data transmission network through a shielded connector, collect data on the device performance and transmit the collected data to a remote computing device, and the data on the device performance is the following data:

periods of time the device is used;

data about the parameters of the device.

[13] In one particular embodiment, portable devices are devices selected from the group: mobile phones, tablets, smartphones, smart wearable devices.

[14] In another particular embodiment of the device, the conductive material is a material selected from the group: stainless steel, magnesium, aluminum, titanium, gold, palladium, nickel.

[15] In another particular embodiment of the device, the ultrasonic emitters are speakers.

[16] In another particular embodiment of the device, the acoustic emitters are speakers.

[17] In another particular embodiment of the device, the locking mechanism is a mechanism selected from the group: an electronic lock, a mechanical lock, a biometric lock, a mechanical latch.

[18] In another particular embodiment of the device, the data on the parameters of the device are the following data:

residual charge level of the power supply,

number of device on / off switching,

number of switchings of acoustic protection modes,

operating time of ultrasonic and acoustic generators, ultrasonic and acoustic emitters, power supply, network communication module.

data on failures / errors in the operation of the device.

DESCRIPTION OF DRAWINGS

[19] The features and advantages of the present technical solution will become apparent from the following detailed description of the technical solution and the accompanying drawings, in which:

[20] FIG. 1 illustrates an example of an implementation of a device for protecting speech information from tacit reception by a portable device.

[21] FIG. 2 illustrates a general view of a device for protecting speech information from secret receipt by a portable device.

[22] FIG. 3 illustrates a general view of a computing device.

IMPLEMENTATION OF THE USEFUL MODEL

[23] The claimed technical solution provides the ability to effectively protect the user's speech information from secret receipt through his portable devices due to a two-circuit protection system that suppresses electromagnetic radiation and masking the speech signal inside the body of the claimed device. In addition, the claimed technical solution allows you to monitor the status of the device, which provides the ability to early detection of failures in the device, the ability to monitor the frequency of use of the device, and also increases the effectiveness of protection. Also, the specified technical solution provides the ability to simultaneously protect several personal devices.

[24] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various embodiments of the claimed technical solution. However, one skilled in the art will appreciate that various embodiments of the present technical solution may be practiced without some of these specific details. The following description provides only exemplary embodiments and is not intended to limit the scope or applicability of the disclosure. Also, you should take into account that the elements of the claimed solution can be implemented in practice in a variety of ways in addition to the specific details set forth in this document.

[25] FIG. 1 shows an example of an implementation of a device for protecting acoustic information from secret receipt by a portable device 100. The device 100, in one embodiment, comprises a shielding housing 110, inside which cells for accommodating portable devices 120 are located, an ultrasonic noise generator 130; sonic generator 140, ultrasonic emitters 150, sonic emitters 160, power supply 170, networking module 180, shielded connector 190.

[26] The elements of the claimed device 100 are fixed between themselves and the supporting elements of the structure using a wide range of assembly operations, for example, screwing, joining, soldering, riveting, etc., depending on the most suitable method of fastening the elements.

[27] Portable devices in this solution should be understood as any portable communication device capable of transmitting data over a network and containing audio and / or video input / output means. Thus, portable devices can be: mobile communication devices such as a cell phone, smartphone, pager, wearable smart devices (for example, smart watches, fitness bracelets, etc.), tablets or laptops, portable game devices, wearable audio or video devices, etc.

[28] The ability to transmit data over a network, in this solution, means the presence of a radio frequency transceiver in a portable device capable of transmitting data to a remote device using communication interfaces, for example, at least one of the following methods: near field communication (NFC), Bluetooth, Ethernet card, GSM modem, GPRS modem, LTE modem, 5G modem, satellite communication module, etc., but not limited to.

[29] Under the protection of acoustic (speech) information in this solution is understood to prevent the leakage of information that circulates in the form of acoustic waves.

[30] Under the covert receipt of information (data) by a portable device in this solution is understood as illegal access to speech (acoustic) information by listening, eavesdropping, recording sound with a portable device and / or unauthorized remote activation of the input / output means of a portable device in order to obtain this information without the knowledge of its owner.

[31] The shielding body 110 is designed to suppress electromagnetic radiation, so that portable devices housed within the device 100 cannot communicate with base stations and other devices to transmit information. In one particular embodiment, the housing 110 includes an upper part (cover) movably connected to the lower part (base), forming an internal volume for housing the elements of the device 100. The connection of the base of the housing 110 to the upper part can be performed using, for example, hinges, hinges and other structural elements that allow the cover to move (open / close) for placement within the case of portable devices, for example, in cells 120, which are disclosed in more detail below.

[32] The base and the upper part of the housing 110 are made of a shielding material that blocks the passage of electromagnetic radiation into the interior of the device 100 (into the internal volume), when these parts are in direct contact with each other. So, when the upper part of the housing and the base are in mutual engagement (for example, the lid is closed), an enclosed space is formed, such as a box, a box, a container, inside which portable devices are placed, and due to the shielding materials of the housing 110, the passage of electromagnetic radiation into the housing is blocked. ...

[33] So, the shielding of the housing 110 can be achieved by making the specified housing from conductive materials with good conductivity. The body 110 can be made in the form of a hollow body of various shapes, for example, a rectangular body, an oval body, etc., containing an upper part and a base, and the upper part of the body 110 is rigidly fixed to the base and is movable relative to the plane of the base (opening / closing the lid). Each surface of the specified housing contains a metal plate and / or a shielding layer with high electrical conductivity. In the closed state (the lid adjoins the side walls), the housing 110, due to the presence of metal plates, represents the Faraday cage, which blocks the passage of electromagnetic radiation into the device 100. The principle of operation of the Faraday cage is that when a closed electrically conductive shell enters the electric field, free electrons of the shell begin move under the influence of this field. As a result, the opposite sides of the cell acquire charges, the field of which compensates for the external field. The principle of operation of the Faraday cage is disclosed in more detail in [1]. As the shielding material, at least the following materials can be selected: stainless steel, magnesium, aluminum, titanium, their combination, etc. The housing 110 can be made from the shielding materials described above, or contain such materials as a spray / substrate / layer. Thus, in one particular embodiment, the outer portion of the housing 110 may be made of non-shielding materials such as wood, plastic, granite, etc., and the interior of the housing may comprise a layer of shielding materials such as metal. plates and / or shielding glass, etc., but not limited to, forming a Faraday cage that prevents the passage of electromagnetic radiation into the interior of the device 100. In another particular embodiment, the shielding body may comprise a substrate or coating made of, for example, gold, palladium, nickel, etc. to provide a shielding effect.

[34] In yet another particular embodiment, the housing 110 may be at least a box in the shape of a rectangular parallelepiped, a container, a box, a box of a cylindrical shape, etc. The shape of the case can be chosen depending on the intended types of portable devices being placed. So, for example, for mobile phones, smartphones, tablets, a box in the form of a rectangular parallelepiped can be chosen, in view of the shape of portable devices. Accordingly, if it is necessary to protect speech information from tacit reception through portable devices such as smart speakers, the housing 110 can be made in the shape of a cylinder (for smart speakers made of a cylindrical shape).

[35] For a person skilled in the art it will be obvious that the specified housing can be made and / or may contain any material listed above, and equivalent in electrical conductivity material, providing shielding of the interior of the housing.

[36] In yet another particular embodiment, the housing may further comprise a sound insulating layer. Thus, the sidewalls, base and cover of the housing may further comprise a sound insulating / sound absorbing layer designed to attenuate the intensity of sound transmitted to the device 100. In addition, the specified layer may prevent the passage of sound signals from the device 100. Materials that can be the sound absorbing / sound insulating layer is made, the following materials can be selected: sound absorbing foam, sound insulating paint, sound absorbing foam, polyurethane, melamine resin, etc., but not limited to.

[37] In yet another particular embodiment, the housing 110 may include a locking mechanism for interlocking the top of the housing with its base. Thus, the locking mechanism may be, for example, a mechanical latch, a mechanical lock, an electronic lock, a biometric lock, etc., but is not limited to. The specified locking mechanism is designed to ensure tight fit of all shielded surfaces of the housing 110 to each other when the device 100 is closed, which in turn provides reliable protection of the internal volume of the device from the passage of electromagnetic radiation and excludes involuntary or malicious opening of the upper part. So, due to the locking mechanism, the weakening of the shielding properties of the housing 110, due to the loose fit of the shielding material to each other, is also excluded.

[38] In another particular embodiment, a power on / off button of the device 100 and a charge level indicator, made, for example, in the form of a screen displaying the remaining percentage of the power source of the device, can be located inside the housing 110.

[39] At least one compartment 120 may be located within the housing 110 for accommodating portable devices in the device 100. In one embodiment, the compartment may be rectangular recesses in the material that fills the interior of the device 100 (inner panel), with a certain depth, so that the portable device is completely placed in the specified cell. As the material with which the interior space can be filled, foam plastic, polyurethane, silicone, PVC, etc. can be selected. The specified material provides reliable fixation of the portable device in the cell, not allowing displacement in case of movement of the device 100. In addition, such material ensures the safety of the case of the portable device from damage (scratches, etc.). As indicated above, the shape of the cell may depend on the type of portable device being placed and may be, for example, in the form of a wristwatch, etc., but is not limited to. For a person skilled in the art it is obvious that the cell can be made in any shape that mimics the portable device.

[40] In one particular embodiment, several cells 120 may be simultaneously located in the housing 110. Thus, the device 100 may contain five cells 120, made in the form of a rectangular recess, each of which may house a portable device, such as a mobile the phone, in such a way that the screen and the back panel of the mobile device are located inside the cell, and only its side edge is the visible part.

[41] In yet another particular embodiment, the cell may comprise a button for switching the acoustic protection mode, as well as a status indicator showing whether the acoustic protection is on at the current time.

[42] Inside the housing of the device 100, an ultrasonic noise generator 130 and an acoustic noise generator 140 are located, for example, at the bottom of the base of the housing. These generators 130 and 140 are designed to create a noise signal that masks the speech signal captured by the input / output means of the portable device located within the device 100, making it illegible. So, in addition to the possibility of secretly obtaining voice information through the owner's portable device by illegally tapping the communication channels of such a device, there is also a risk that the portable device may perform unauthorized sound recording, for example, through microphones, even if there is no communication with the base station, and, therefore , in the absence of the possibility of transmitting information, while the recorded speech information can be sent to the remote device of the attacker in the future when the connection of the portable device to the communication network is resumed. To prevent this type of acoustic information leakage, the device 100 includes generators 130 and 140.

[43] The generator 130 is configured to generate a signal of large amplitude in a frequency range that is not audible to humans, but is picked up by microphones of portable devices, for exposing them to an ultrasonic signal with a power sufficient to block the amplifier or cause significant nonlinear distortion in such a microphone. Since modern smartphones and recording devices can be equipped with a noise canceling microphone, such microphones can bypass the standard acoustic protection from a conventional noise generator due to their ability to operate over a wide frequency range. The generated ultrasonic signal can be transmitted using at least one emitter 150. In one particular embodiment, the frequency range of the generator 130 can range from 24 to 26 kHz. It is obvious to a person skilled in the art that any noise generator capable of generating a signal in the ultrasonic range can be used as the ultrasonic noise generator.

[44] Generator 140 may be at least a random noise generator, such as a pink or white noise generator, that uses random thermal-electronic noise from the semiconductor pn junction as a random noise source. The electronic noise signal is then filtered and amplified for transmission to at least one acoustic emitter 160. The generator 130 is configured to generate sound tuned to a frequency and intensity that provide a noise shield for the microphones of portable devices. White noise is a random sound signal with a constant intensity. Pink noise is an audio signal with a frequency spectrum whose intensity is inversely proportional to frequency. Thus, in one particular embodiment, the frequency range of generator 140 may be 200 to 12,000 Hz.

[45] By using these generators 130 and 140, the portable device located in the device 100 is prevented from recording speech information, regardless of the type of device used. Thus, in one particular embodiment, the acoustic and ultrasonic protection modes can be used together as a means of active acoustic protection, as well as separately only the acoustic mode or only the ultrasonic protection mode. The choice of the mode may depend on the types of portable devices placed in the device 100. Thus, when placing smartphones, an ultrasonic protection mode may be activated. Smartphone microphones have a wider operating frequency range. At the same time, when placing old generation mobile phones, it is more expedient to use the acoustic protection mode, due to the peculiarities of the microphone of such devices. Accordingly, when placing different types of portable devices, a joint acoustic protection mode (ultrasonic plus acoustic protection) can be applied.

[46] In addition, in one particular embodiment, the activation of the generators 130 and 140 can occur by means of a button located in a cell, such as cell 120. Thus, the specified button can also switch the acoustic protection modes described above.

[47] In another particular embodiment, the housing 110 may also include a proximity sensor (proximity sensor) for detecting closure of the lid of the device 100. Said sensor may be electrically connected to the generators 130 and 140 to automatically turn on when the lid is closed.

[48] Emitters 150 and 160 are designed to broadcast the generated interference from generators 130 and 140, respectively. Emitters 150 and 160 may be at least speakers, such as electromagnetic speakers, piezoelectric speakers, or any other type of sound transducer with which the generated noise signals are transmitted to the interior of the device 100. Thus, the emitter 150 can be connected (by electrical connection, for example, a power wire) to the generator 130, respectively, and may be configured to convert the electrical audio signal generated by the generator 130 into a corresponding sound. In turn, the emitter 160 may also be coupled to the generator 140 and be configured to convert the electrical audio signal generated by the generator 130 into appropriate sound. In one particular embodiment, the radiators 150 and 160 are located in at least one cell 120 so that the emitted sound is directed to the area of the input / output means of the portable device placed in the specified cell 120. Thus, the radiators 150 and 160 can be located in the walls cells 120 and may be directed to the top and bottom of the portable device where its input / output means are located. In another particular embodiment, at least two emitters 150 and at least two emitters 160 can be located simultaneously in the cell 120, so that one emitter 150 and 160 are simultaneously located in one wall of the cell 120, respectively. Due to this arrangement, the possibility of incorrect placement of the portable device in the cell 120 is excluded, and, as a consequence, the efficiency of protection of acoustic information also increases, since, regardless of the location of the microphone of the portable device, the noise level at the point of placement of the microphone of the cell phone will be no less 110 dB.

[49] The power source 170 is designed to supply electrical power to all electronic elements of the device 100. Thus, the source 170 can be electrically connected (for example, a data bus) to the generators 130 and 140, the emitters 150 and 160, the networking module 180 and is configured with the ability to transfer power to the specified elements. In one particular embodiment, the source 170 may be a rechargeable battery, such as a 4700 mAh lithium-ion battery, for up to 24 hours of battery life. The battery can be powered, for example, from a 220 V AC network through a shielded connector 190. It is obvious to a person skilled in the art that any power supply known from the prior art (both stationary and portable) can be used as a power source. ).

[50] The networking module 180 provides data transmission via an internal or external computer network, for example, Intranet, Internet, LAN, and the like. As one or more modules 180 can be used, but not limited to: Ethernet card, GSM modem, GPRS modem, LTE modem, 5G modem, satellite communication module, NFC module, Bluetooth and / or BLE module, Wi-Fi module, etc. etc. In one particular embodiment, the module 180 may be an Ethernet card (network card), such as a modem. The printed circuit board of the modem may contain at least a controller / signal processor, input / output ports, memory and is designed to establish a communication channel with a remote computing device. In more detail, the elements of module 180 are disclosed in FIG. 3. As mentioned above, the module 180 can be powered from the power source 170. The main feature of the module 180 is the ability to collect telemetry data (metrics) from the device 100 and then transmit them to a remote computing device for monitoring. Thus, the collection of telemetry data from the device 100 can be performed by the controller / microcontroller of the module 180, for example, using the EXE or MDB protocols. In another particular embodiment, the module 180 is configured to log an event about the performance of the device 100. Thus, the specified event log can be stored in the memory of the module 180 (for example, in RAM or ROM). The telemetry data collected by the module 180 can be, for example, the following data: periods of use of the device, device parameters such as: residual charge level of the power supply, the number of on / off switching of the device, the number of switching of acoustic protection modes, the operating time of generators, data on failures / errors in the operation of device elements, etc., not limited to. In another particular embodiment, the parameters of the device may be the following data: the duration of the operation of the ultrasonic and acoustic generators, ultrasonic and acoustic emitters, a power source, and a network interaction module. Due to the possibility of connecting the device 100 to a local network, it is possible to implement effective remote control over the parameters of the device, which can increase the reliability of the device and the efficiency of protecting acoustic information from secret receipt. Thus, due to network diagnostics of the device 100, the response time to a failure can be reduced, which ultimately can reduce the time of the “defenseless” operation of the device 100. In addition, the ability to monitor the usage time of the device 100 allows the device to be used in organizations and to track the actual use of the device. staff of such organizations. For example, an organization's security officer can assess whether employees of remote branches use this type of information protection (by tracking device telemetry data), or their portable devices remain available for technical intelligence. Also, one of the additional advantages of integrating the module 180 into the device 100 is the ability to monitor the operating time of the product, which allows timely preventive measures (quick replacement or repair), and, as a result, increases the reliability of the device. The module 180 can be connected to the data network through a shielded connector 190. In one particular embodiment, the device 100 also contains an ADC 181 (a device that converts an input analog signal into a discrete code) for connecting generators 130 and 140, as well as emitters 150 and 160 to module 180. It will be apparent to a person skilled in the art that ADC 181 can either be embedded in module 180 or be a separate internal element of device 100.

[51] The shielded connector 190 may be a connector for connecting the module 180 to a data network, as well as connecting power to a power source 170. Thus, in one particular embodiment, connector 190 may be a connector for connecting an RJ-45 connector, etc. ., but not limited to, with a protective thin metal shield to prevent electromagnetic interference and interference. In yet another particular embodiment, connector 190 may be a PoE (Power over Ethernet) splitter that separates the data channel and the power supply channel, the separation taking place inside the shielding housing, so that the housing 110 contains only one shielded connector 190. Thus, when connecting the device 100 through said connector 190 can simultaneously transmit data to the data network using the module 180 and supply power to the power source 170. This design of said connector 190 excludes additional channels of information leakage and does not allow the connector to function as a radiating antenna. It is obvious that the implementation in the housing 110 of at least two connectors, each of which would provide only a connection for supplying power or information, would significantly reduce the effectiveness of the protection provided by the device 100. Therefore, to increase the efficiency of protection, the device 100 is designed with only one connector 190, designed to connect the device both to the data network and to connect to the mains for power. In addition, in another particular embodiment, a decoupling device may be used to power the device through connector 190. Also, in yet another particular embodiment, the power supply and data transmission on the device 100 can be performed using the PoE injector. In this embodiment, the shielded connector 190 will be located inside the housing of the device 110, namely within the shielding layer, for example, in the area of the location of the cells 120 and will be connected by a cable, for example, RJ 45, to the PoE injector, the outputs of which will be located on the housing 110 ...

[52] FIG. 2 shows a general view of a device 100 for protecting acoustic information from secret receipt by a portable device.

[53] The device 100 may be a rectangular box containing a lid secured to the base of the housing 110 by means of hinges, forming the inner volume of the device 100 in the closed state. user through his portable device by providing dual-circuit protection, consisting of a shielding housing 110, suppressing electromagnetic radiation and active acoustic protection, providing masking of the speech signal inside the device 100. As mentioned above, the housing 110 can be made, for example, of metallic materials having high electrical conductivity, for the formation of a Faraday cage. As shown in FIG. 2, in this particular embodiment, the device body 110 is made of wood and includes an inner shielding layer 210 of metal that forms a Faraday cage when closed (when the lid is in contact with the base of the body). At least one compartment 120 is located within the housing 110. Thus, in one particular embodiment, the device 100 may include five compartments 120, each of which is designed to accommodate a portable device. For a person skilled in the art it is obvious that the number of cells and the shape of the cells can be selected depending on the type of portable device and the required simultaneous number of locations, and may contain, for example, three, four, six cells, etc.

[54] The housing 110 also includes a locking mechanism 211, a device on / off button 212, a power supply charge level indicator 213, an active acoustic protection mode switch 214, and an active acoustic protection status indicator 215.

[55] The locking mechanism 211 may be at least a mechanical latch, a mechanical lock, an electronic lock, a biometric lock, and allows the shielding elements to fit snugly against each other when locked. In addition, the locking mechanism prevents inadvertent or malicious opening of the device 100 to weaken the shielding properties of the housing 110.

[56] The on / off button of the device 212 is designed to turn on or off the device 100. For a person skilled in the art it is obvious that the activation of the device 100 can be performed remotely, for example, using a network connection.

[57] The power supply charge level indicator 213 may be information output means such as a screen, display, etc., configured to display the residual charge level of the power supply 170.

[58] The active acoustic protection mode switch button 214 is configured to activate the desired acoustic protection mode. As described above, the device 100, in one particular embodiment, can support at least three protection modes: ultrasonic protection mode, acoustic protection mode, combined protection mode (ultrasonic plus acoustic protection). It should be noted that by default, when the device 100 is activated, the ultrasonic protection mode is activated, since most handheld devices are now equipped with wide-range microphones.

[59] The active acoustic protection status indicator 215 may be, for example, an LED element, a light bulb, etc., and is configured to indicate the active acoustic protection status (on / off). Thus, when the acoustic protection is on, the indicator 215 can emit light. In contrast, when the acoustic protection is turned off, the indicator 215 does not emit light. For a person skilled in the art it is obvious that in addition to the light indication, other methods of displaying the status of the device can also be applied. So, for example, sound indication, etc., can be used, but not limited to.

[60] Now consider one of the scenarios for using the device 100. This scenario is given as an example and should not limit the application of the claimed technical solution.

[61] The device 100 may be located in a conference room in an organization's office. The device 100, in one particular embodiment, can be performed both in a stationary form (powered from the mains) or in a wearable form (powered by a rechargeable battery). To maintain complete confidentiality of acoustic (speech) information in such rooms, all portable devices of users in this room are placed in the device 100. For this, the cover of the case 110 is opened and the portable devices are placed in the cells 120. As mentioned above , the number of cells may vary. After placing the portable devices in the compartments 120, power is supplied to the electronic elements of the device 100. Thus, in one particular embodiment, the power supply can be activated using the power on / off button 212 of the device 100. After the power is turned on, the indicator 213 located inside the housing device 100, displays the residual percentage of the power source 170. Further, depending on the filling of the cells 120 with portable devices, in each cell where the portable device is located, active acoustic protection is activated. In one particular embodiment, activation of the acoustic protection can also be performed by means of the button 214. As indicated above, depending on the type of portable device, a certain acoustic protection mode can be activated. Thus, in another particular embodiment, when the acoustic protection mode is activated, the ultrasonic acoustic protection mode is activated by default. Switching to other protection modes, such as acoustic protection mode, combined protection mode, can also be performed by means of the button 214. Accordingly, the indicator light 215 displays the current state of the acoustic protection mode in each cell 120. The acoustic protection mode provides voice write protection for the portable the device, creating strong noises (white or pink noise, ultrasonic interference) in the area of the portable device, which mask the acoustic signal penetrating inside the device 100. Further, to prevent the passage of electromagnetic radiation inside the device 100, the cover of the housing 110 is closed. When closed, the shielding body 110 forms a Faraday cage, preventing the passage of electromagnetic radiation into the interior of the device 100. To prevent the housing cover from loosening against the base, the device 100 is closed by a locking mechanism such as a mechanical latch, mechanical lock, etc.

[62] Thus, due to the double-circuit protection, which provides suppression of electromagnetic radiation and masking of the speech signal inside the body of the claimed device, effective protection of acoustic information from being secretly received by a portable device is provided.

[63] In addition, in another particular embodiment, continuing the example of the use case of the device 100, the specified device can be connected to the local network of the organization. The connection to the network can be carried out through connector 190. It should be noted that this connector also serves to supply power to the device (charging the battery). By connecting to the organization's network, it is possible to monitor (collect) the metrics of the device 100 on a remote computing device in the organization, such as an organization's server, for example. By being able to monitor the metrics of the device 100, the security service of such an organization can estimate the actual use of the device 100 by the users of such a room. For example, a security service can compare the times when the chat room is busy with the times when the device 100 is active to track users' compliance with security requirements. In addition, monitoring the performance of the device 100 also allows for rapid response to component / total device failure. If any element of the device 100 fails, an alarm message may be displayed at the interface of the remote device indicating which element is inactive. In addition, in another embodiment, by monitoring the duration of the elements of the device 100, preventive measures can be taken to prevent the failure of the device 100. It is also worth noting that multiple devices 100 can be simultaneously connected to the local network, which can allow simultaneous monitor the use of devices 100 in different branches and / or premises of the organization and maintain the health of such devices 100.

[64] Thus, due to the ability to connect the device 100 to the data transmission network, the performance of the device 100 is monitored, which in turn increases the reliability of the said device 100 and the efficiency of protecting speech information from being secretly received by a portable device. Collection of indicators such as: residual charge level of the power supply, the number of device on / off switches, the number of switching of acoustic protection modes, the operating time of ultrasonic and acoustic generators, ultrasonic and acoustic emitters, a power supply, a network communication module, data on failures / errors in operation devices, etc., not only allows the timely replacement of device elements, thereby increasing its reliability, but also provides comprehensive protection of speech information. So, due to the double-circuit protection of the device 100, as well as by monitoring the periods of use of the device 100, the influence of the human factor on the effectiveness of the protection of acoustic information is reduced, and it is also possible to unambiguously determine the implementation of the protection itself, because without such control it is impossible to determine whether employees use such protection in general.

[65] FIG. 3 illustrates an example of a general view of a computing device 300 that is part of device 100, such as a network module 180.

[66] In general, the device 300 includes components such as: one or more processors 301, at least one memory 302, data storage means 303, I / O interfaces 304), I / O means 305, networking means 306, which are connected by means of a universal bus.

[67] Processor 301 (or multiple processors, controller, microcontroller) can be selected from a wide range of devices currently in use, such as Intel ™, AMD ™, Apple ™, Samsung Exynos ™, MediaTEK ™, Qualcomm Snapdragon ™, etc. .NS. The processor also needs to include a GPU, such as an NVIDIA or ATI GPU. In this case, the memory means can be the available amount of memory of the graphics card or graphics processor.

[68] The RAM 302 is a random access memory and is intended for storing machine-readable instructions executed by the processor 301 for performing the necessary operations for logical processing of data. RAM 302 typically contains executable instructions of an operating system and associated software components (applications, software modules, etc.).

[69] ROM 303 is one or more permanent storage devices such as a hard disk drive (HDD), solid state data storage device (SSD), flash memory (EEPROM, NAND, etc.), optical storage media (CD- R / RW, DVD-R / RW, BlueRay Disc, MD), etc.

[70] To organize the operation of the components of the device 300 and the organization of the operation of external connected devices, various types of I / O interfaces 304 are used. The choice of the appropriate interfaces depends on the specific execution of the computing device, which can be, but are not limited to: PCI, AGP, PS / 2, IrDa, FireWire, LPT, COM, SATA, IDE, Lightning, USB (2.0, 3.0, 3.1, micro, mini, type C), TRS / Audio jack (2.5, 3.5, 6.35), HDMI, DVI, VGA, Display Port , RJ45, RS232, etc.

[71] To ensure user interaction with the computing device (200), various input / output means 305 are used, for example, keyboard, display (monitor), touch display, touch pad, joystick, mouse, light pen, stylus , touch panel, trackball, speakers, microphone, augmented reality, optical sensors, tablet, light indicators, projector, camera, biometric identification (retina scanner, fingerprint scanner, voice recognition module), etc.

[72] The networking means 306 allows the device 300 to transmit data via an internal or external computer network, such as an Intranet, the Internet, a LAN, and the like. One or more means 306 may include, but are not limited to: Ethernet card, GSM modem, GPRS modem, LTE modem, 5G modem, satellite communication module, NFC module, Bluetooth and / or BLE module, Wi-Fi module, etc.

[73] Modifications and improvements to the above-described embodiments of the present technical solution will be apparent to those skilled in the art. The foregoing description is presented only as an example and does not imply any restrictions for the purpose of implementing other particular embodiments of the claimed technical solution, which does not go beyond the scope of the claimed scope of legal protection. Structural elements such as microcontrollers, blocks, modules, etc., described above and used in this technical solution, can be implemented using electronic components used to create digital integrated circuits.

Sources of information:

1. Elementary textbook of physics, volume 2, Landsberg GS, 1985, Distribution of charges in a conductor. Faraday cage, p. 71-75, Found on the Internet 05/20/2021 at the address: http://mat.net.ua/mat/biblioteka-fizika/Landzberg-fizika-t2-elektrichestvo.pdf

Claims (24)

1. A device for protecting acoustic information from secret receipt by portable devices, containing: a shielding body made of a conductive material that prevents the passage of electromagnetic radiation, including: sound absorbing layer; locking mechanism; storage cells for portable devices: an ultrasonic noise generator configured to generate an ultrasonic noise signal; an acoustic noise generator configured to generate a noise signal; ultrasonic emitters located in each storage compartment of the portable device, configured to transmit the noise signal generated by the ultrasonic interference generator to the area of the input / output means of the portable device located in this compartment; moreover, in each cell there are two ultrasonic emitters directed to the upper and lower parts of the cell; acoustic emitters located in each cell for storing portable devices, configured to transmit the noise signal generated by the acoustic noise generator to the area of the input / output means of the portable device located in this cell; moreover, in each cell there are two acoustic emitters directed to the upper and lower parts of the cell; power supply; shielded connector; a network communication module configured to connect to a data transmission network through a shielded connector, collect data on the device performance and transmit the collected data to a remote computing device, and the data on the device performance is the following data: the periods of time the device is used; data about the parameters of the device. 2. The device according to claim 1, characterized in that the portable devices are devices selected from the group: mobile phones, tablets, smartphones, smart wearable devices. 3. The device according to claim 1, characterized in that the conductive material is a material selected from the group: stainless steel, magnesium, aluminum, titanium, gold, palladium, nickel. 4. The device according to claim 1, characterized in that the ultrasonic emitters are speakers. 5. The device according to claim 1, characterized in that the acoustic emitters are speakers. 6. The device according to claim 1, characterized in that the locking mechanism is a mechanism selected from the group: electronic lock, mechanical lock, biometric lock, mechanical latch. 7. The device according to claim 1, characterized in that the data on the parameters of the device are the following data: residual charge level of the power supply, number of device on / off switching, number of switchings of acoustic protection modes, operating time of ultrasonic and acoustic generators, ultrasonic and acoustic emitters, power supply, network communication module, data on failures / errors in the operation of the device.

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