RU2534004C2 - Method, device and system for authenticating electronic articles - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to electronic engineering and specifically to a method, a device and a system for authenticating electronic articles (packaged devices, blocks, modules). The method comprises transmitting an input signal with frequency in the range of f₁ to f₂ to a socket, said frequency being selected such that characteristic resonance frequencies of the internal volume of the housing $$f_i\sim \frac{c}{L_i},$$

where c is the speed of light, L_i denotes characteristic dimensions - height, width and depth of the housing of the article under analysis, are lower than f₂. Electrical characteristics of the output signal are measured and then compared with similar characteristics of a reference signal obtained using a sample from the same batch of articles with an internal structure that was investigated in detail in advance and was selected as a reference sample.

EFFECT: non-destructive authentication of a batch of devices and faster analysis.

5 cl, 6 dwg

Description

FIELD OF THE INVENTION

The present invention relates to the field of electronic technology, and in particular to a method for verifying the authenticity of electronic products (enclosed devices, blocks, modules).

State of the art

The standard way to study a batch of devices is to disassemble and fully analyze one or more samples from a batch and try to compare the rest of the samples with already investigated products taken as a standard. The methods are, as a rule, destructive, at least the seal of the case is broken. Currently, the only method that allows you to study the internal structure of a radio electronic product without opening the case is x-ray tomography [1]. This method has two main drawbacks: firstly, expensive bulky equipment that requires protection of personnel from x-ray radiation, and secondly, the ability to establish the fact of such a high-energy research using special “bookmarks” in the device and to carry out the corresponding software counteraction to the research process itself. Naturally, the problem arises of finding alternative methods for studying instruments in the housing. In addition, the use of scattering materials in the design of the product allows masking the embedded elements, and if it is impossible to disassemble the unit, it is difficult to detect these elements (using x-ray tomography).

High-frequency imposition or intermodulation radiation with an output signal in a narrow range of about one fixed frequency and the selection of useful information, usually speech information, in the analyzed signal are also known from the prior art [2]. The disadvantage of this approach is its limited functionality, as the system is configured for a predefined type of information.

A known access system with a “proximity” card, a user identification system with an incoming action in the form of a pulse when analyzing a “reflected” signal in the time domain to determine the code stored in the access card [3]. The disadvantages of this approach are the difficulty of signal processing in the time domain, the detection of only one specific property.

Closest to the claimed technical solution is US patent US 2009/0184719 [4], which describes a method for studying the environment of a working microcircuit and a device for its implementation. A device that implements the method consists of a boot board, a socket and an antenna. The boot board is provided with a mount for the element under test, for example, an integrated circuit, and is electrically connected to the power connector. The antenna is located behind the boot board and is closed to the socket. Using this arrangement, the antenna is capable of capturing a wireless signal and monitoring it in a test environment, recording excess noise values in an integrated circuit testing environment. The disadvantages of this technical solution is the lack of the ability to obtain information about the internal structure of the test product, as well as the lack of control of the nature of the wireless signal, which does not allow us to talk about the authenticity of the tested product, but only allows you to find out if the external wireless signal is within the range acceptable for the studied element according to the technical conditions .

The task to which the claimed invention is directed is to eliminate the disadvantages of the prototype, namely, confirmation of the authenticity (uniformity control) of a batch of electronic products (packaged devices, blocks, modules) by a non-destructive low-energy method that allows you to search for bookmarks by comparing the characteristics of the studied products with the characteristics of the reference products examined in detail by destructive methods.

, где с - скорость света, L_i - характерные размеры - высота, ширина, глубина корпуса исследуемого изделия, меньше частоты f₂, снимаются электрические характеристики выходного сигнала, которые сравнивается с аналогичными характеристиками эталонного сигнала, полученными при использовании образца из той же партии изделий с предварительно детально исследованной внутренней структурой, выбранного в качестве эталонного образца.This problem is solved due to the fact that the claimed method of confirming the authenticity of the product, which contains at least one connector for supplying an input signal and one connector for removing the output signal, characterized in that the signal with a frequency in the range from f ₁ to f ₂ , selected in such a way that the characteristic resonant frequencies of the internal volume of the housing $$f_i\sim \frac{c}{L_i}$$

where c is the speed of light, L _i - characteristic dimensions - height, width, depth of the body of the investigated product, less than frequency f ₂ , the electrical characteristics of the output signal are taken, which are compared with similar characteristics of the reference signal obtained using a sample from the same batch of products with previously studied in detail the internal structure selected as a reference sample.

Disclosure of invention

Embodiments of the present invention provide a method for effectively verifying the authenticity of electronic products (enclosed devices, blocks, modules) within a single batch.

An embodiment of the present invention provides a method for verifying the authenticity of electronic products using an internal radio portrait (by the term “internal radio portrait” we mean a combination of amplitude-frequency, phase-frequency and time (impulse response) characteristics obtained from various outputs of the product, which includes:

selection of a reference product from a batch and removal of its internal radio portrait, which is hereinafter referred to as a reference radio portrait);

a detailed study of the internal structure of the investigated reference product using destructive research methods, confirmation of its authenticity based on the characteristics obtained and comparing them with the technical description;

receiving internal radio portraits for other products from the party;

comparison of the reference radio portrait with the radio portraits of other products from the party.

The technical result provided by the given set of features is confirmation of the authenticity of the batch of electronic products without destruction (at least all sealing elements, on the basis of which the guarantee of the batch is determined by the manufacturer, are stored) of all batch products, and the research time is much less than the time of studying the electrical parameters or functional control of electronic products.

The invention is illustrated by drawings, which depict:

FIG. 1 is a flowchart partially illustrating a method for verifying the authenticity of electronic products by comparing their radio portraits.

FIG. 2 - Graph of the amplitude-frequency characteristics between the input and output of the test amplifier with and without a plug-in device.

FIG. 3 - Schematic illustration of a stand for checking the authenticity of a batch of products by measuring the internal radio portrait.

FIG. 4 is a block diagram of an embodiment 1 of a stand measurement unit implementing the described invention.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 partially illustrates the sequence of steps required to authenticate an electronic product. And includes the following steps:

Step 101: selecting a reference, obtaining a reference internal radio portrait of the product using the equipment option for obtaining an internal radio port;

Step 102: Destructive study of the reference sample, confirmation of the choice of the reference;

Step 103: using the same equipment that implements the method, in the same measurement modes, an internal radio portrait of all other products from the batch is received;

Step 104: comparing the reference radio portrait with the radio portraits of other products from the batch;

Stage 105: if the radio portraits coincide, the conclusion is made that the product belongs to a group of scripts; with various radio portraits, it is concluded that the product belongs to a group of fakes.

FIG. 2 illustrates various radio portraits for a reference product (without a bookmark) (1 in Fig. 2) and a test product (with a bookmark) (2 in Fig. 2).

In FIG. 3 shows a diagram of a stand that implements the described invention. The stand consists of a measuring mode programming unit that allows you to configure the internal radio portrait measurement mode based on the features of the monitored products (1 in Fig. 3), a measuring unit that is responsible for receiving an internal radio portrait of all monitored batch products (2 in Fig. 3), an object test (test product) (3, in Fig. 3), a conversion unit that translates the received portraits into a form convenient for processing and storage (4 in Fig. 3), a reference base that serves to store the reference radio port the name of the product, the measurement mode used to obtain the radio portrait (5 in Fig. 3), the solver unit, which serves for automatic or automated comparison of the radio portraits of the tested products with the standard and decides whether the tested product is assigned to the group of originals or to the group of fakes ( 6 in Fig. 3). Optionally, the stand can be equipped with a report unit for automatic generation of reports on the results of product authentication within one batch (7 in Fig. 3).

Embodiments of the measuring unit as an integral part of the stand shown schematically in FIG. 3.

Embodiment 1

In this embodiment, the measurement unit consists of a fixed-frequency generator (401 in Fig. 4), a test product (402 in Fig. 4) and a selective voltmeter (403 in Fig. 4) or another recording device that is able to separate individual harmonic components of the signal complex shape and determine the rms value of their voltage (for example, a superheterodyne radio receiver). In this embodiment, manual frequency tuning is used to obtain a radio portrait.

Embodiment 2

In this embodiment, the oscillating frequency generator and automatically tunable receiver-analyzer, for example, a panoramic frequency response and frequency response meter.

From the above embodiments, those skilled in the art can easily understand that the invention can be implemented as hardware or as a combination of software and the necessary hardware common platform.

Only some illustrative embodiments of the present invention are described above that are not intended to limit the scope of the invention in any way. Any modifications, equivalents, or improvements consistent with the principles of the invention are to be included in the scope of the invention.

INFORMATION SOURCES

1. Weinberg I.A., Weinberg E.I. Computer tomographs for non-destructive testing and quantitative diagnostics of aerospace products. - Engine. - No. 2 (56). - 2008 is available at http://engine.aviaport.ru/issues/56/page19.html.

2. Katorin Yu.F. and others. Big encyclopedia of industrial espionage. - St. Petersburg: LLC Polygon Publishing House, 2000. - 512 p.

3. METHOD FOR DETERMINING INTERMODULATION PARAMETERS OF A RANDOM ANTENNA. Patent RU 2429495 C2, IPC G01R 29/08, publ. 09/10/2011.

4. IC TESTING ENVIRONMENT INVESTIGATIVE DEVICE AND METHOD. Patent US 2009/0184719, IPC G01R 29/08, G01R 31/01, H01Q 9/04, publ. January 9, 2008.

Claims (5)

1. The method of authenticating a product that contains at least one connector for supplying an input signal and one connector for removing the output signal, characterized in that the input signal uses a signal with a frequency in the range from f ₁ to f ₂ , selected so that the characteristic resonant frequencies of the internal volume of the housing $$f_i\sim \frac{c}{L_i}$$

where c is the speed of light, L _i - characteristic dimensions - height, width, depth of the body of the investigated product, less than frequency f ₂ , the electrical characteristics of the output signal are taken, which are compared with similar characteristics of the reference signal obtained using a sample from the same batch of products with previously studied in detail the internal structure selected as a reference sample. 2. The method according to p. 1, in which the signal with the "frequency sweep" is used as the input signal and the spectrum of the output signal is analyzed. 3. The method according to p. 1, in which the input signal is supplied directly to one of the connectors of the product, and the output signal is analyzed directly on the other connector. 4. The method according to claim 1, in which the input signal is supplied directly to the input connector of the product, and the output signal is analyzed through an antenna located near the output connector of the product. 5. The method according to p. 1, in which a constant DC voltage is not supplied to the product.

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