KR102127794B1 - Apparatus for indentifying data signal and data recovering system using the same - Google Patents

Abstract

The present invention relates to a data signal identifying apparatus and a data recovering system using the same. The present invention provides an apparatus for identifying a data signal of a COB type USB memory device including: a printed circuit board having first and second surfaces facing each other and having pin-out points formed on the second surface or adjacent to the same; and a flash memory mounted on the first surface. The apparatus for identifying a data signal of a COB type USB memory device comprises: a reference position identification unit identifying a reference point corresponding to a node transferring a signal Vss for operating the flash memory, among the pin-out points; a pin-out signal identification unit for identifying data signals of the flash memory corresponding to identification target points which are the pin out points except the reference point; and a data management unit collecting resistance data between the reference point and each of the identification target points. According to the present invention, it is possible to recover, in a correct and effective manner, data of a COB type USB memory device with poor recognition.

Description

Apparatus for indentifying data signal and data recovering system using the same}

The present invention relates to a data signal identification device and a data recovery system using the same, and more particularly, to a data signal identification device for identifying a data signal of a COB (Chip on board) type USB memory device and a data recovery system using the same .

The USB (universal serial bus) memory device, which includes a flash memory to store data and a controller to control it, is compact and easy to carry, and easy to use. It is one of the indelible storage media. In particular, unlike a CD or DVD, USB memory devices are widely used as portable memory devices because they can freely delete and store data. However, the USB memory device has a high risk of loss due to its small size, a risk of virus infection, and has a weak problem in electrical shock due to a flash memory made of semiconductor. Accordingly, when the USB memory device is damaged or broken due to an external shock, data recovery is difficult.

Meanwhile, the USB memory device may be classified into various types according to the implementation form of the flash memory and the controller. For example, there is a general form in which a flash memory and a controller are separated into respective chip types and implemented on a board. In general, such a USB memory device has limitations in miniaturization of the device because the flash memory and the controller are implemented in separate chips, but has an advantage of durability, and is easy to recover data when a failure of recognition failure occurs. have. For example, a general USB memory device uses a TSOP-48 chip as a flash memory, in which case the output location of the data signal of the flash memory chip is standardized. Accordingly, when the host is not recognized due to a failure, the TSOP chip used as a flash memory is detached and inserted into a USB recovery device, so that data recovery can be easily performed.

Recently, USB (universal serial bus) memory devices are gradually decreasing in size, and in order to implement a memory device having a desired capacity in a small space, it is necessary to increase the mounting density of the memory device. In order to solve this problem, recently, a memory device is implemented using a chip on board ('COB') process. That is, as another implementation example of the USB memory device, there is a COB type USB memory device in which a flash memory and a controller are implemented together in a chip on board form. Such a COB type USB memory device has an advantage over an ordinary USB memory device, has advantages in miniaturization, and can reduce manufacturing costs.

However, since the output location of the data signal of the flash memory is not determined in the COB type USB memory device, and the information is not provided by the manufacturer, the data of the COB type USB memory device is generated when a failure of recognition failure occurs. There is a problem that is difficult to recover.

The background technology of the present application is disclosed in Korean Patent Publication No. 10-2014-0143015.

The technical problem to be solved in the present invention is to provide a data signal identification device and a data recovery system using the same for accurately and effectively recovering data of a COB type USB memory device having poor recognition.

A data signal identification device according to embodiments of the present invention for achieving the above-described object includes a first few second surfaces facing each other, and a printed circuit board including pinout points formed adjacent to the second surface or the second surface , A device for identifying a data signal of a COB type USB memory device including a flash memory mounted on the first surface, the node transmitting a Vss signal for operation of the flash memory among the pin-out points A reference location identification unit for identifying a reference point corresponding to; A pin-out signal identification unit for identifying data signals of the flash memory corresponding to identification target points, which are pin-out points excluding the reference point; And a data management unit collecting resistance data between the reference point and each of the identification target points, wherein the pinout signal identification unit compares the resistance data with pinout signal information obtained through past data recovery cases. , Identifying a data signal of the flash memory corresponding to each of the identification target points.

According to one embodiment, the pin-out signal information is obtained through a data recovery example of a past COB type USB memory device, and the resistance values of the identification points, which are pin-out points already identified, and the respective identification points. It may be characterized by including matching information about the corresponding data signal.

According to an embodiment, the data management unit further collects image data of a circuit pattern including the pin-out points, wherein the reference location identification unit compares the image data with reference location information obtained through past data recovery cases. Accordingly, it may be characterized in that the optimal pin-out point in the reference position region is extracted as the reference point.

According to an embodiment of the present disclosure, the reference location information may include image data of a circuit pattern obtained through a data recovery example of a past COB type USB memory device and pinmap information matching the image data.

Data recovery system according to embodiments of the present invention for achieving the above object is the data signal identification device; An adapter including pin-out points exposed by a decap process and terminals connected by a wire bonding method based on the location information of the pin-out points identified by the data signal identification device; And a host electrically connected to the adapter and having a data recovery program for recovering data in the flash memory.

According to embodiments of the present invention, since the location of pinout points corresponding to the data signal can be quickly and accurately identified using the data signal identification device, the data of the COB type USB memory device of poor recognition can be accurately and effectively Can be recovered.

1 is a schematic cross-sectional view for describing a COB type USB memory device.
FIG. 2 is a view showing a rear surface of the COB type USB memory device of FIG. 1.
3 is for describing a printed circuit board in a decapsulation state, and shows a second surface of the printed circuit board in a state where the molding member is removed.
4 is a block diagram showing a schematic configuration of a data recovery system according to embodiments of the present invention.
5 is a flowchart illustrating a data recovery method of a COB type USB memory device according to embodiments of the present invention.
6 is a flowchart specifically showing step S20 of FIG. 5.
7 is a flowchart specifically showing step S21 of FIG. 6.
8 and 9 are exemplary views for explaining step S10 of FIG. 5.
10 and 11 are exemplary views for explaining step S30 of FIG. 5.
12 is a diagram for describing pinout terminals of a TSOP 48-pin chip used in a general USB memory device.
13 is a schematic block diagram illustrating a data signal identification device according to embodiments of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the common knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is only defined by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

In the present specification, when it is said that a member is positioned “on” another member, this includes not only the case where one member is in contact with the other member but also another member between the two members. In addition, in the present specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.

The terms "about", "substantially", and the like, as used throughout this specification, are used in or at a value close to that value when manufacturing and material tolerances specific to the stated meaning are given, and are understood herein. In order to help, accurate or absolute figures are used to prevent unscrupulous use of unintentional infringers by the disclosure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic cross-sectional view for describing a COB type USB memory device. FIG. 2 is a view showing a rear surface of the COB type USB memory device of FIG. 1.

1 and 2, the COB type USB memory device 100 includes a printed circuit board 110, a plurality of circuit elements mounted on the printed circuit board 110, and a molding member sealing the circuit elements It may include (140). The plurality of circuit elements may include, for example, a flash memory 120, a controller 130, and passive elements (not shown).

Printed circuit board 110 has a first surface (110a) and a second surface (110b) facing each other, a plurality of conductive paths (not shown) are formed therein mounted on the first surface (110a) Circuit elements such as the flash memory 120 and the controller 130 may be configured to be electrically connected.

The flash memory 120 may include a nand flash memory, and is mounted on the first surface 110a of the printed circuit board 110 by wire bonding in a bare chip state. The controller 130 controls the flash memory 120 in response to a request from the host. For example, the controller 130 may provide data read from the flash memory 120 to the host, and store data provided from the host in the flash memory 120. To this end, the controller 130 controls operations such as reading, writing, and erasing of the flash memory 120.

The second surface 110b of the printed circuit board 110 is provided with interface terminals 112 that are connected to an external element (ie, a host), and in the packaging state, the interface terminals 112 are connected to the molding member 140. Exposed by. The molding member 140 may include, for example, an epoxy molding resin, but is not limited thereto.

Meanwhile, referring to FIG. 3, a circuit pattern 114 electrically connected to circuit elements such as a flash memory 120 and a controller 130 is provided on the second surface 110b of the printed circuit board 110 (in other words, , Pin layout) may be formed. Here, FIG. 3 is for describing a printed circuit board in a decapsulation state and shows a second surface 110b of the printed circuit board 110 in a state where the molding member 140 is removed. As shown in FIG. 3, the circuit pattern 114 is a data signal input to or output from the flash memory 120 (eg, Vcc. Vss, I/O0 to I/15, CLE, ALE) , WE, WP, R/B1 to R/B4, RE, CE1 to CE4 signals, etc.) may include a plurality of pin-out points 116. In the packaging state, the circuit pattern 114 (in other words, pin layout) is sealed by the molding member 140 (see FIG. 2 ).

When the above-described COB type USB memory device 100 is normal, the flash memory 120 is electrically connected to the host 200 through an interface, and the controller 130 drives the interface and the flash memory 120 to transmit data Read, write, and erase. However, when the USB memory device 100 is not recognized by the host due to a failure such as a crack or a bad connection, the flash memory 120 is electrically connected to the host 200 and driven (eg, reading data). In order to do so, a separate device may be required.

4 is a block diagram showing a schematic configuration of a data recovery system according to embodiments of the present invention.

Referring to FIG. 4, the data recovery system 500 according to embodiments of the present invention is for recovering data of a COB type USB memory device 100 having a bad recognition, a host 200 and a data signal identification device It may include a 300 and the adapter 400.

The host 200 may include portable electronic devices such as a mobile phone or a laptop, or electronic devices such as a desktop computer, TV, and projector. The host 200 may include a data recovery program 210 for recovering data of the USB memory device 100. The data recovery program 210 may include, for example, a flash extractor (FLASH EXTRACTOR), but is not limited thereto. The data recovery program 210 controls the operation of the flash memory 120 on behalf of the controller 130 and recovers data of the flash memory 120. In this specification, the host 200 on which the data recovery program 210 is installed may be referred to as a data recovery device.

The data signal identification device 300 may identify location information of pin-out points 116 (see FIG. 3) corresponding to the data signal of the flash memory 120. Here, the location information of the pin-out points 116 may be information on each function of the pin-out points 116 corresponding to a data signal (or pin-out signal) for the operation of the flash memory 120. In other words, the location information of the pinout points 116 is whether each pinout point 116 is a node corresponding to a Vcc signal, a node corresponding to a Vss signal, or a node corresponding to a CLE signal. It may be pin-map information.

For a typical USB memory device, TSOP 48-pin chip is used as flash memory. In this case, pin-out terminals (eg, Vcc. Vss, I/O0 to I/15, CLE, ALE, WE, WP, R/B1 to R/B4, RE, CE1) through which data signals of the flash memory are input/output Since the position of the ~CE4 terminal, etc. (see FIG. 12) is standardized, there is no need to separately identify the position of the data signal in the flash memory. However, as the COB type USB memory device 100 is mounted on the printed circuit board 110 in a bare chip state, the location where data signals are input/output is not standardized, and the chip manufacturer also provides information on this. Since it is not disclosed, it is necessary to identify the location information of the pinout points 116 corresponding to the data signal for data recovery of the flash memory 120.

For example, the data signal identification device 300 obtains the location information of the reference point among the pinout points 116, and after obtaining resistance data between the reference point and other pinout points 116, the resistance data and the past The data signal corresponding to each point 116 may be identified using pin out signal information, which is data accumulated through a data recovery example. The data signal identification device 300 may include a computer system and/or computer software, and detailed configuration thereof will be described later.

The adapter 400 is a device for electrically connecting the USB memory device 100 having poor recognition to the host 200, and may be electrically connected to the USB memory device 100 in a decapsulation state through a wire bonding method. have.

10 and 11, the adapter 400 may include pin-out points 116 of the printed circuit board 110 exposed by the decap and terminals 410 connected by wires. . The connection of the pin-out points 116 and the terminals 410 may be based on the location information of the pin-out points 116 acquired through the data signal identification device 300. That is, the pin-out points 116 may be wired to the terminals 410 of the adapter 400 according to the corresponding data signal. The adapter 400 electrically connected to the decapsulation USB memory device 100 may be connected to the host 200 through a separate socket or connector.

As described above, in the case of the COB type USB memory device 100, since the location of the pinout points 116 corresponding to the data signal of the flash memory 120 is unknown, the data signal identification device 300 After obtaining the location information of the pin-out points 116 through, the pin-out points 116 must be connected to the terminals 410 of the adapter 400 according to the location of the data signal (or pin-out signal). . If the connection between the pin-out points 116 and the terminals 410 is incorrect, the data recovery device may malfunction or not respond.

Hereinafter, a data recovery method of the COB type USB memory device 100 using the above-described data recovery system 500 will be described.

5 is a flowchart illustrating a data recovery method of a COB type USB memory device according to embodiments of the present invention. 6 is a flowchart specifically showing step S20 of FIG. 5. 7 is a flowchart specifically showing step S21 of FIG. 6. 8 and 9 are exemplary views for explaining step S10 of FIG. 5. 10 and 11 are exemplary views for explaining step S30 of FIG. 5.

1, 2, 4 and 5, a data recovery method of a COB type USB memory device according to embodiments of the present invention performs a decapsulation process to perform pinout points of a printed circuit board Exposing the pin (out-points) (S10), using the data signal identification device to obtain the location information of the pin-out points corresponding to the data signal for the operation of the flash memory (S20), the location information It may include the step of connecting the pin-out points to the terminals of the adapter (S30), and recovering the data in the flash memory using a data recovery device electrically connected to the adapter (S40).

Specifically, a decapsulation process may be performed on one surface of the molding member 140 covering the second surface 110b of the printed circuit board 110 (ie, the rear surface of the USB memory device 100) ( See Figure 8). Here, decapsulation (decapsulation) is to remove the epoxy molding resin (Epoxy Molding Compound; EMC) or plastic portion of the IC package to detect defects in the IC package, an etching process (etching process) to open the inside of the IC package it means. For example, the decap process may include a method using a chemical etching reaction, a method using a laser, or a method using a plasma.

In this embodiment, the decap process is for removing a portion of the molding member 140 covering the second surface 110b of the printed circuit board 110, and may be performed using a chemical etching method using a glass fiber pen. have. A circuit pattern 114 (see FIG. 3) formed adjacent to the second surface 110b or the second surface 110b of the printed circuit board 110 may be exposed through the decap process (see FIG. 9 ). As shown in FIG. 3, the circuit pattern 114 includes pin-out points 116 corresponding to a data signal for operation of the flash memory 120. In conclusion, by performing a decapsulation process, pin-out points 116 of the printed circuit board 110 may be exposed (S10).

In one embodiment, the printed circuit board 110 is formed of a multi-layer, and the pinout points 116 are not the outermost layer (eg, the first layer) adjacent to the second surface 110b (eg, the first layer), but an inner layer (eg , The second layer or the third layer), the decap process may be performed until the pinout points 116 of the inner layer are exposed.

Subsequently, location information of the pin-out points 116 may be obtained using the data signal identification device 300 (S20 ). Here, the location information of the pin-out points 116 may be information on each function of the pin-out points 116 corresponding to a data signal (or pin-out signal) for the operation of the flash memory 120. That is, the location information of the pin-out points 116 may be pin-map information regarding the function of the pin-out points 116 that transmit a data signal for the operation of the flash memory 120.

Specifically, as illustrated in FIG. 6, the step of obtaining location information of the pin-out points 116 (S20) is: obtaining the location information of the reference point (S21 ), the reference point and each identification target Acquiring the resistance data between the points (S22), and comparing the pinout signal information obtained through the resistance data and the past data recovery case, to identify the data signal of the flash memory corresponding to each identification target point Step S23 may be included. Here, the reference point may be a pin out point corresponding to the Vss signal of the flash memory 120. That is, the reference point may be a node transmitting the Vss signal of the flash memory 120. Meanwhile, the identification target points may be pin-out points 116 excluding the reference point.

According to an embodiment, as illustrated in FIG. 7, the step of obtaining location information of the reference point (S21) is obtaining image data of the circuit pattern 114 including pin-out points 116. (S211) and comparing the image data and the reference location information obtained through the past data recovery example, and extracting an optimal pin-out point in the reference location area as a reference point (S212). Here, the reference location information may include image data of a circuit pattern (ie, image data of a pin layout) acquired through a data recovery example of a past COB type USB memory device, and pinmap information matching it.

For example, the data signal identification device 300 extracts image data similar to the image data of the circuit pattern 114 obtained in step S211 from the image data of the past data recovery case, and the reference position based on the pinmap information about it. After selecting an area, an optimal pinout point having the highest reference position matching among pinout points in the reference position area may be extracted as a reference point. In the embodiments of the present invention, since the reference point corresponds to a point that is a node that transmits a Vss signal of the flash memory 120, through reference position information obtained through past data recovery cases, it is typical for similar circuit patterns. The reference point can be extracted.

On the other hand, the image of the circuit pattern 114 including the pin-out points 116 may be photographed using a camera mounted on an electronic device such as a smartphone, mobile phone, laptop, tablet PC, etc. It may be transmitted to the signal identification device 300 and stored.

Whether the extracted pin-out point is a reference point can be verified by measuring the resistance between the reference point and a pin-out point outside the reference position area. If there is an error in the extracted reference point, the resistance value between the reference point and the pinout point outside the reference position area may not be measured. In this case, another pinout point in the reference location area may be extracted as a reference point, and the location information of the reference point may be obtained through the verification process.

Subsequently, resistance data between the reference point and the unknown identification target points may be obtained (S22 ). A circuit tester can be used to obtain the resistance data. For example, the (+) terminal probe of the circuit tester may contact the reference point, and the (-) terminal probe of the circuit tester may be contacted to the unknown identification point to measure the resistance value between both points. The measured resistance value may be transmitted to the data signal identification device 300 and stored.

In general, the resistance value is measured using a circuit tester by contacting the (+) terminal probe of the circuit tester with the (+) pole of the measurement target, and by contacting the (-) terminal probe with the (-) pole of the measurement target. Measure. However, in the embodiments of the present invention, in consideration of the circuit characteristics of the flash memory 120, the (+) terminal probe of the circuit tester contacts the reference point corresponding to the Vss node, and the (-) terminal of the circuit tester The probe measures the resistance value between both points by contacting the unknown point.

Referring back to FIG. 6, the data signal identification device 300 compares the resistance data acquired through step S22 with the pinout signal information obtained through the past data recovery example, and flashes corresponding to the identification target points The data signal of the memory 120 (in other words, a pin-out signal) may be identified (S23 ). Here, the pin-out signal information is obtained through a data recovery example of a past COB type USB memory device, and pin-out points already identified based on a reference point (ie, a pin-out point corresponding to a Vss signal node) ( Hereinafter, a resistance value of (referred to as identification points) and matching information regarding a data signal corresponding to each identification point may be included.

For example, when the unknown first identification target point obtained through step S22 has a first resistance value, the data signal identification device 300 matches the identification point having the first resistance value or an approximate value thereof The data signal may be extracted from past data recovery cases (ie, pinout signal information) to identify location information of the first identification target point (ie, a data signal corresponding to the first identification target point). The pinout signal information may be continuously updated whenever data recovery of the USB memory device 100 is performed using the system 500. That is, the image data of the pin-out points 116 identified through the current data recovery, the resistance data, and the matching pin-map information may be used as pin-out signal information for future data recovery.

On the other hand, in step S22, the resistance data may be obtained for all points 116 to be identified, or may be obtained for only some points. When resistance data is obtained for all the identification target points 116, location information for all of the identification target points 116 is obtained, and pinmap information may be completed. On the other hand, when the resistance data is obtained only for a part of the points to be identified 116, the data signal identification device 300 locates some of the points to be identified and the circuit obtained in step S211. Based on the image data of the pattern, pinmap information having similar circuit patterns and similar location information may be extracted from past recovery case data to provide pinmap information corresponding to the printed circuit board 110 to be recovered.

1, 2, 4 and 5, the pin-out points 116 are connected to the terminals 410 of the adapter 400 based on the location information obtained through step S20. It can be (S30).

Specifically, after the circuit pattern 114 of the printed circuit board 110 exposed through the decap process of step S10 is placed on the adapter 400 so as to face upward, the position obtained through step S20 Based on the information (ie, pinmap information), pinout points 116 can be connected to the terminals 410 of the corresponding adapter 400 (see FIGS. 10 and 11 ). That is, the pin-out points 116 may be connected to the terminals 410 of the adapter 400 by wire bonding according to a corresponding data signal. Thereafter, the adapter 400 may be electrically connected to a data recovery device (ie, the host 200 on which the data recovery program 210 is installed) through a separate socket or connector.

When the pin-out points 116 are correctly connected to the terminals 410 according to the corresponding data signal, the USB memory device 100 coupled to the adapter 400 can be recognized by the host 200, and the host ( Data of the flash memory 120 is recovered through the data recovery program installed in 200 (S40), and the data recovery process of the COB type USB memory device 100 of bad recognition may be completed. The data recovery program 210 may use, for example, a flash extractor (FLASH EXTRACTOR), but is not limited thereto. The process of recovering data through the data recovery program 210 includes, for example, a chip ID recognition step of the flash memory 120, an image dump file of data stored in the flash memory 120, and mixing of the image dump file ( mixing), but is not limited thereto.

According to embodiments of the present invention, since the location of the pin-out points 116 corresponding to the data signal can be quickly and accurately identified using the data signal identification device 300, the COB type USB memory of poor recognition The data of the device 100 can be accurately and effectively recovered.

13 is a schematic block diagram illustrating a data signal identification device according to embodiments of the present invention. For the sake of simplicity, detailed descriptions of overlapping components are omitted.

Referring to FIG. 13, the data signal identification device 300 may include a control unit 310, a database 320, a data management unit 330, a reference location identification unit 340, and a pinout signal identification unit 350. have.

The controller 310 may control the overall operation of the data signal identification device 300. For example, the control unit 310 may control operations of the database 320, the data management unit 330, the reference location identification unit 340, and the pinout signal identification unit 350. The control unit 310 may include a processor and a memory. The processor may be a data processing device embedded in hardware having physically structured circuits to perform functions represented by codes or instructions included in a program. The processor includes, for example, a microprocessor, a central processing unit (CPU), a processor core, a multiprocessor, an application-specific integrated circuit (ASIC), and a field programmable gate array (FPGA). ). The memory may function to temporarily or permanently store data processed by the processor. The memory may include magnetic storage media or flash storage media.

The database 320 may include a reference location information storage unit 321, a pinout signal information storage unit 322 and a base information storage unit 323.

The reference location information storage unit 321 may store reference location information obtained through past data recovery cases. For example, the reference location information may include image data of a circuit pattern (ie, image data of a pin layout) obtained from a data recovery example of a USB memory device of the COB type in the past, and pinmap information matched with this.

The pin-out signal information storage unit 322 may store pin-out signal information obtained through past data recovery cases. For example, the pin-out signal information is obtained through a data recovery example of a USB memory device of the COB type in the past, and pin-out points already identified based on a reference point (ie, a pin-out point corresponding to a Vss signal node) ( Hereinafter, a resistance value of (referred to as identification points) and matching information regarding a data signal corresponding to each identification point may be included.

The base information storage unit 323 of the image data and identification target points 116 of the circuit pattern 114 acquired by the data management unit 330 for data recovery of the COB type USB memory device 100 of bad recognition Resistance data can be stored.

The reference location identification unit 340 uses the image data stored in the base information storage unit 323 and the reference location information stored in the reference location information storage unit 321 to a node transmitting a Vss signal of the flash memory 120. The location of the corresponding reference point can be identified. For example, the reference location identification unit 340 extracts image data similar to the image data of the circuit pattern 114 from the image data of the past data recovery case, selects the reference location area based on the pinmap information, and then the reference location Among the pin-out points in the region, an optimal pin-out point having the highest reference position matching may be extracted as a reference point.

The pin-out signal identification unit 350 uses the resistance data stored in the base information storage unit 323 and the pin-out signal information stored in the pin-out signal information storage unit 322 to determine a data signal corresponding to points to be identified. Can be identified. For example, the pinout signal identification unit 350 extracts an identification point having the same or approximate value as the resistance value of the identification target point and a data signal matching it from the past data recovery case (ie, pinout signal information) to identify it. The location information of the target point (ie, a data signal corresponding to the identification target point) can be identified.

When resistance data is obtained for all identification target points 116, the pinout signal identification unit 350 may be obtained by acquiring location information for all identification target points 116 to complete pinmap information. . On the other hand, when the resistance data is obtained only for a part of the identification target points 116, the pinout signal identification unit 350 may include the location information and the base information storage unit acquired for the partial identification target points 116. Based on the stored image data, pinmap information having similar circuit patterns and location information can be extracted from past recovery case data (ie, pinout signal information) to generate pinmap information that matches the printed circuit board to be recovered. .

The data management unit 330 collects image data or resistance data of a circuit pattern transmitted from a user client (for example, an electronic device equipped with a camera or a mobile terminal) or directly input by the user, and provides it to the base information storage unit 323 can do. In addition, the data management unit 330 generates information generated by the reference location identification unit 340 (eg, image data acquired in the current data recovery case and identified reference location information) and the pinout signal identification unit 350. Provided information (eg, resistance data and location information of pinout points identified in the current data recovery case) to the location information storage unit 321 and the pinout signal information storage unit 322, respectively, for future data recovery It can be used as reference location information and pin-out signal information.

In the present specification, preferred embodiments of the present invention have been disclosed, and although specific terms have been used, they are merely used in a general sense to easily describe the technical contents of the present invention and to understand the present invention, and the scope of the present invention. It is not intended to be limiting. It is apparent to those skilled in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

100: COB type USB memory device
200: host 300: data signal identification device
400: adapter 500: data recovery system

Claims (5)

A USB of the COB type including a printed circuit board including first and second second surfaces facing each other, pin-out points formed adjacent to the second surface, and a flash memory mounted on the first surface An apparatus for identifying a data signal of a memory device, comprising:
A reference position identification unit for identifying a reference point corresponding to a node transmitting a Vss signal for operation of the flash memory among the pin-out points;
A pinout signal identification unit for identifying a data signal of the flash memory corresponding to identification target points that are pinout points excluding the reference point; And
A data management unit for collecting resistance data between the reference point and each of the identification target points,
The pin-out signal identification unit may compare the resistance data with pin-out signal information obtained through past data recovery cases, and identify data signals of the flash memory corresponding to respective identification target points. Data signal identification device.
According to claim 1,
The pin-out signal information is obtained through a data recovery example of a past COB type USB memory device, and relates to a resistance value of identification points, which are pin-out points already identified, and a data signal corresponding to each of the identification points. Data signal identification device comprising a matching information.
According to claim 1,
The data management unit further collects the image data of the circuit pattern including the pin-out points,
The reference location identification unit compares the image data with reference location information obtained through past data recovery cases, and extracts the pinout point having the highest reference location matching among the pinout points in the reference location area as the reference point Data signal identification device characterized in that the.
The method of claim 3,
The reference location information, data signal identification device, characterized in that it comprises the image data of the circuit pattern obtained through the data recovery example of the past COB type USB memory device and pin map information matching it.
The data signal identification device of any one of claims 1 to 4;
An adapter including pin-out points exposed by a decap process and terminals connected by a wire bonding method based on the location information of the pin-out points identified by the data signal identification device; And
A data recovery system for recovering a COB type USB memory device that is electrically connected to the adapter and includes a host having a data recovery program for recovering data in the flash memory.

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