CN111010357B - Data ferrying method and device based on HDD hard disk - Google Patents

Data ferrying method and device based on HDD hard disk Download PDF

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Publication number
CN111010357B
CN111010357B CN202010155820.3A CN202010155820A CN111010357B CN 111010357 B CN111010357 B CN 111010357B CN 202010155820 A CN202010155820 A CN 202010155820A CN 111010357 B CN111010357 B CN 111010357B
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data
signal
frame
hard disk
sending
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CN111010357A (en
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郑敬华
梁用语
胡淼
薛鹏飞
许成喜
马慧敏
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National University of Defense Technology
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

The invention provides a data ferry method and a device based on a Hard Disk Drive (HDD), wherein the method comprises the following steps: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electric signal; the data transmitting terminal converts the amplified electric signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 correspond to the frequency f respectively1And f2(ii) a Adding a lead code to the head of the physical frame for each frame of data; and the data receiving end receives the signal transmitted by the carrier wave, restores the signal and acquires the data. According to the scheme of the invention, the method is easy to realize, the data transmission speed is high, the transmission is safe, the data is easy to restore, and the risk of data leakage is reduced.

Description

Data ferrying method and device based on HDD hard disk
Technical Field
The invention relates to the field of data transmission, in particular to a data ferrying method and device based on a hard disk, and particularly relates to data ferrying realized by using an HDD (hard disk drive) in a physically isolated computer environment.
Background
With the rapid development of computer technology, it has become a common operation to transmit data between two devices, and data transmission is performed between an internal network and an external network, and between a public network and a private network, which particularly needs to ensure the security of data transmission.
In some application scenarios, due to the risks of network attacks and the like, the requirement of security cannot be met by transmitting data between two devices or two networks through an IP network. In order to ensure data security, two devices or two networks can be physically isolated, and data can be transmitted between the two physically isolated devices or two networks by using a data ferrying transmission mode.
The traditional cross-network data exchange mode is an optical disk ferry. The information to be transmitted is recorded by the optical disk, then the mechanical arm is used for switching to the network at the other end to be exchanged, and then the storage is read, so that one-way transmission is completed. The method has the advantages of low speed, high packet loss rate and difficult security guarantee, and can seriously influence the normal development of the service in case of losing important data information. Meanwhile, because the data copying is completed manually, the copied content range is difficult to monitor, the compliance of the data is difficult to guarantee, whether the data is falsified or not can not be guaranteed, the copied data and the use flow can not be traced, and a person in charge can not be traced when a problem occurs.
A data ferry solution implemented by using electromagnetic radiation, light waves, sound waves and thermal principles also appears, but the existing data ferry solution is complex to implement, and has the problems of data packet loss, slow data transmission speed, high data restoration difficulty, risk of data leakage and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a data ferrying method and a data ferrying device based on a Hard Disk Drive (HDD), and the method and the device are used for solving the technical problems that a data ferrying solution in the prior art is complex to implement, has data packet loss, low data transmission speed and high data restoration difficulty and has the risk of data leakage.
According to a first aspect of the present invention, there is provided a HDD hard disk-based data ferry method, including the steps of:
step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electric signal;
step S102: the data transmitting terminal converts the amplified electric signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 respectively correspond to the frequency f1And f2Using f1And f2The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Further, the data sending end executes the following method, including:
step S3001: starting a data sending program of the data sending end;
step S3002: the HDD hard disk of the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
step S3003: modulating the binary format signal into a 2FSK signal;
step S3004: judging whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;
step S3005: bit-wise reading a 2FSK signal;
step S3006: judging whether the read data represented by the 2FSK signal is 0; if yes, go to step S3007; if not, go to step S3008;
step S3007: adjusting the read-write frequency of HDD hard disk to f1(ii) a The process advances to step S3010;
step S3008: adjusting the read-write frequency of HDD hard disk to f2(ii) a The process advances to step S3010;
step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
step S3010: judging whether the data sending end finishes sending the data; if yes, go to step S3011; if not, go to step S3002;
step S3011: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Furthermore, the first four bits of the data frame are lead codes used for marking the time sequence of the data frame, so that data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
Further, the data receiving end executes the following method, including:
step S601: starting a data receiving program of the data receiving terminal;
step S602: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
step S603: demodulating the received signal;
step S604: and restoring the demodulated signal, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, displaying the data at the data end, and giving up if not.
According to a second aspect of the present invention, there is provided an HDD hard disk-based data ferry apparatus, the apparatus including:
a configuration module: the data sending end and the data receiving end are both provided with HDD hard disks, and magnetic head chips are configured on magnetic heads of the HDD hard disks and used for realizing the amplification of electric signals;
a data sending module: for converting the amplified electrical signal of the data to be transmitted into a binary signal by the data transmitting terminal, modulating the binary signal into a 2FSK signal, and making the binary signals representing the digital 0 and 1 respectively pairCorresponding to the frequency f1And f2Using f1And f2The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
a data receiving module: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Further, the data sending module includes:
a promoter module: the data sending program is used for starting the data sending program of the data sending terminal;
a format conversion submodule: the HDD hard disk used for the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
a modulation submodule: for modulating the binary format signal into a 2FSK signal;
a first judgment sub-module: the data processing device is used for judging whether the current data frame data is full;
reading the sub-modules: for bit-wise reading of the 2FSK signal;
a second judgment sub-module: the data processing device is used for judging whether the data represented by the read 2FSK signal is 0;
a first frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f1；
A second frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f2；
A preamble submodule: the data transmitting end is used for transmitting the current frame to the data receiving end by adding a lead code at the head of the current frame so as to realize the synchronization of the data transmitting end and the data receiving end; establishing a new data frame;
a third judgment sub-module: used for judging whether the data sending end finishes sending data;
a sending submodule: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Furthermore, the first four bits of the data frame are lead codes used for marking the time sequence of the data frame, so that data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
Further, the data receiving module includes:
a promoter module: for being started by the data receiving end data receiving program;
a receiving submodule: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
a demodulation submodule: for demodulating the received signal;
and (3) restoring a submodule: and the data end display module is used for restoring the demodulated signals, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, and performing data end display, otherwise, giving up.
According to a third aspect of the present invention, there is provided a HDD hard disk-based data ferry system, including:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the instructions are used for being stored by the memory and loaded and executed by the processor to implement the HDD hard disk based data ferry method.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having a plurality of instructions stored therein; the plurality of instructions are used for loading and executing the HDD hard disk-based data ferry method by the processor.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:
FIG. 1 is a flow chart of a HDD hard disk based data ferry method according to one embodiment of the present invention;
FIG. 2 is a diagram of a work environment scenario for an arrangement according to an embodiment of the present invention;
fig. 3 is a flowchart of a method executed by a data transmitting end according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a modulation scheme according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a data frame format according to an embodiment of the present invention;
FIG. 6 is a flowchart of a method performed by a data receiving end according to an embodiment of the present invention;
fig. 7 is a block diagram of a HDD hard disk-based data ferry device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First, a flow chart of HDD hard disk based data migration according to an embodiment of the present invention will be described with reference to fig. 1. As shown in fig. 1, the method is applied to a physically isolated computer environment and comprises the following steps:
step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electric signal;
step S102: the data transmitting terminal converts the amplified electric signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 respectively correspond to the frequency f1And f2Using f1And f2The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
A diagram of a work environment scenario for an arrangement according to an embodiment of the present invention is described below in conjunction with fig. 2. As shown in fig. 2:
under the control of an application program, the data transmitting end reads and writes the hard disk at a high speed through the hard disk, generates radiation and carries out 2FSK digital modulation on the electric signal. The data receiving end receives signals by using SDR equipment, and displays data to be sent of the data sending end on a system terminal of the data receiving end after signal demodulation and reduction.
Step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electric signal;
specifically, the data of the hard disk is stored on a disk full of magnetic substances, and the process of writing data in the HDD hard disk is a process of changing the magnetic pole of the magnetic substances of the HDD disk by an induction magnetic head; the process that the MR magnetic head senses signals through the change of the resistance value is adopted for reading data of the HDD hard disk, and the magnetic head plays a key role in the reading and writing processes of the HDD hard disk. A head chip is provided on a head of an HDD hard disk, the head chip being for amplifying an electric signal generated in reading and writing processes of the HDD hard disk.
Step S102: the data transmitting terminal converts the amplified electric signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 respectively correspond to the frequency f1And f2Using f1And f2The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
the following describes an execution process of the data sending end of the present invention with reference to fig. 3, where fig. 3 is a flowchart of a data sending end execution method implemented by the present invention, and as shown in fig. 3, the data sending end includes:
step S3001: starting a data sending program of the data sending end;
step S3002: the HDD hard disk of the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
step S3003: modulating the binary format signal into a 2FSK signal;
step S3004: judging whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;
step S3005: bit-wise reading a 2FSK signal;
step S3006: judging whether the read data represented by the 2FSK signal is 0; if yes, go to step S3007; if not, go to step S3008;
step S3007: adjusting the read-write frequency of HDD hard disk to f1(ii) a The process advances to step S3010;
step S3008: adjusting the read-write frequency of HDD hard disk to f2(ii) a The process advances to step S3010;
step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
step S3010: judging whether the data sending end finishes sending the data; if yes, go to step S3011; if not, go to step S3002;
step S3011: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Further, the step S3003: modulating the binary format signal into a 2FSK signal;
fig. 4 is a schematic diagram illustrating a modulation scheme according to an embodiment of the present invention. As shown in fig. 4:
the data sending end converts the amplified electric signal of the data to be sent into a binary signal which can be identified by a computer, the signal needs to be modulated, a 2FSK modulation mode is adopted, and the modulation formula is as follows:
Figure GDA0002461732680000081
respectively corresponding 0 and 1 to two different frequencies f1And f2Using f1And f2The carriers of the two frequencies convey digital information.
Further, the step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
a data frame format diagram according to an embodiment of the present invention is described with reference to fig. 5, as shown in fig. 5:
the first four bits of the data frame are lead codes and are used for marking the time sequence of the data frame, and data synchronization between the data sending end and the data receiving end can be achieved. The middle 12 bits of the data frame are the transmitted data information, and the data frame is also provided with a CRC check code.
Step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Referring to fig. 6, a method executed by a data receiving end is described, where fig. 6 is a flowchart of a method executed by the data receiving end according to an embodiment of the present invention, and as shown in fig. 6, the method includes:
step S601: starting a data receiving program of the data receiving terminal;
step S602: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
step S603: demodulating the received signal;
step S604: and restoring the demodulated signal, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, displaying the data at the data end, and giving up if not.
An embodiment of the present invention further provides a data ferry device based on an HDD hard disk, as shown in fig. 7, the device includes:
the device comprises:
a configuration module: the data sending end and the data receiving end are both provided with HDD hard disks, and magnetic head chips are configured on magnetic heads of the HDD hard disks and used for realizing the amplification of electric signals;
a data sending module: for converting the amplified electrical signal of the data to be transmitted into a binary signal by the data transmitting terminal, modulating the binary signal into a 2FSK signal, so that the binary signals representing the digits 0 and 1 correspond to the frequency f, respectively1And f2Using f1And f2The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
a data receiving module: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Further, the data sending module includes:
a promoter module: the data sending program is used for starting the data sending program of the data sending terminal;
a format conversion submodule: the HDD hard disk used for the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
a modulation submodule: for modulating the binary format signal into a 2FSK signal;
a first judgment sub-module: the data processing device is used for judging whether the current data frame data is full;
reading the sub-modules: for bit-wise reading of the 2FSK signal;
a second judgment sub-module: the data processing device is used for judging whether the data represented by the read 2FSK signal is 0;
a first frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f1；
A second frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f2；
A preamble submodule: the data transmitting end is used for transmitting the current frame to the data receiving end by adding a lead code at the head of the current frame so as to realize the synchronization of the data transmitting end and the data receiving end; establishing a new data frame;
a third judgment sub-module: used for judging whether the data sending end finishes sending data;
a sending submodule: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Furthermore, the first four bits of the data frame are lead codes used for marking the time sequence of the data frame, so that data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
Further, the data receiving module includes:
a promoter module: for being started by the data receiving end data receiving program;
a receiving submodule: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
a demodulation submodule: for demodulating the received signal;
and (3) restoring a submodule: and the data end display module is used for restoring the demodulated signals, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, and performing data end display, otherwise, giving up.
The embodiment of the invention further provides a system for data ferry based on the HDD, which comprises:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions are for being stored by the memory and loaded and executed by the processor by the method for HDD hard disk based data ferry as described above.
The embodiment of the invention further provides a computer readable storage medium, wherein a plurality of instructions are stored in the storage medium; the plurality of instructions are for loading and executing by a processor the method for HDD hard disk based data ferry as described above.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a physical machine Server, or a network cloud Server, etc., and needs to install a Windows or Windows Server operating system) to perform some steps of the method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims (10)

1. A data ferry method based on HDD hard disk is applied to physically isolated computer environment, and is characterized by comprising the following steps:
step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electric signal;
step S102: the data transmitting terminal converts the amplified electric signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 respectively correspond to the frequency f1And f2Using f1And f2The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
2. The HDD hard disk-based data ferry method according to claim 1, wherein the data sending end executes a method including:
step S3001: starting a data sending program of the data sending end;
step S3002: the HDD hard disk of the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
step S3003: modulating the binary format signal into a 2FSK signal;
step S3004: judging whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;
step S3005: bit-wise reading a 2FSK signal;
step S3006: judging whether the read data represented by the 2FSK signal is 0; if yes, go to step S3007; if not, go to step S3008;
step S3007: adjusting the read-write frequency of HDD hard disk to f1(ii) a The process advances to step S3010;
step S3008: adjusting the read-write frequency of HDD hard disk to f2(ii) a The process advances to step S3010;
step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
step S3010: judging whether the data sending end finishes sending the data; if yes, go to step S3011; if not, go to step S3002;
step S3011: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
3. The HDD hard disk-based data ferry method according to claim 1, wherein the first four bits of the data frame are preambles for marking a timing sequence of the data frame, so as to achieve data synchronization between the data sending end and the data receiving end; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
4. The HDD hard disk-based data ferry method of claim 1, wherein the data receiving end performs the following method, comprising:
step S601: starting a data receiving program of the data receiving terminal;
step S602: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
step S603: demodulating the received signal;
step S604: and restoring the demodulated signal, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, displaying the data at the data end, and giving up if not.
5. A data ferry device based on a HDD hard disk, which is applied to a physically isolated computer environment, and is characterized by comprising:
a configuration module: the data sending end and the data receiving end are both provided with HDD hard disks, and magnetic head chips are configured on magnetic heads of the HDD hard disks and used for realizing the amplification of electric signals;
a data sending module: for converting the amplified electrical signal of the data to be transmitted into a binary signal by the data transmitting terminal, modulating the binary signal into a 2FSK signal, so that the binary signals representing the digits 0 and 1 correspond to the frequency f, respectively1And f2Using f1And f2The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
a data receiving module: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
6. The HDD hard disk-based data ferry device of claim 5, wherein the data transmission module comprises:
a promoter module: the data sending program is used for starting the data sending program of the data sending terminal;
a format conversion submodule: the HDD hard disk used for the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
a modulation submodule: for modulating the binary format signal into a 2FSK signal;
a first judgment sub-module: the data processing device is used for judging whether the current data frame data is full;
reading the sub-modules: for bit-wise reading of the 2FSK signal;
a second judgment sub-module: the data processing device is used for judging whether the data represented by the read 2FSK signal is 0;
a first frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f1；
A second frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f2；
A preamble submodule: the data transmitting end is used for transmitting the current frame to the data receiving end by adding a lead code at the head of the current frame so as to realize the synchronization of the data transmitting end and the data receiving end; establishing a new data frame;
a third judgment sub-module: used for judging whether the data sending end finishes sending data;
a sending submodule: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
7. The HDD hard disk-based data ferry device of claim 5, wherein the first four bits of the data frame are preamble codes for marking the timing sequence of the data frame, so as to achieve data synchronization between the data sending end and the data receiving end; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
8. The HDD hard disk-based data ferry device of claim 5, wherein the data receiving module comprises:
a promoter module: for being started by the data receiving end data receiving program;
a receiving submodule: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
a demodulation submodule: for demodulating the received signal;
and (3) restoring a submodule: and the CRC check module is used for restoring the demodulated signals, performing CRC check on the data, receiving the data if the check is correct, and displaying the data at the data end, otherwise, giving up the data.
9. A system for data ferry based on HDD hard disks, comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions are for being stored by the memory and loaded by the processor and performing the method of HDD hard disk based data ferry according to any of claims 1-4.
10. A computer-readable storage medium having stored therein a plurality of instructions; the plurality of instructions for loading and executing by a processor the method of HDD hard disk based data ferry according to any of claims 1-4.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1217526A (en) * 1997-11-13 1999-05-26 索尼株式会社 Apparatus for recording data on magnetic recording medium
CN1257273A (en) * 1998-11-11 2000-06-21 Tdk株式会社 Magnetic head device
US6263288B1 (en) * 1998-07-22 2001-07-17 Eastman Kodak Company Method and apparatus for indicating proximity of film scanner to CRT display monitor
CN103187071A (en) * 2011-12-30 2013-07-03 Hgst荷兰有限公司 Microwave-assisted magnetic recording head and systems thereof with environmental conditions control
CN104050981A (en) * 2013-03-13 2014-09-17 希捷科技有限公司 Contact detection using laser modulation
CN205453690U (en) * 2016-03-14 2016-08-10 张培蕾 Using mobile phones simulation magnetism data transmission's device
CN205723958U (en) * 2016-06-17 2016-11-23 上海易码信息科技有限公司 Magnetic field impulse launches antenna
CN106776412A (en) * 2016-12-21 2017-05-31 广州炒米信息科技有限公司 Interface compatibility circuit
CN109640096A (en) * 2018-12-06 2019-04-16 浙江大学 A kind of concealed communication method based on video decoding electromagnetic leakage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001176225A (en) * 1999-12-15 2001-06-29 Tdk Corp Head suspension assembly
JP2010108560A (en) * 2008-10-31 2010-05-13 Toshiba Storage Device Corp Signal amplification device and storage device
US8755256B2 (en) * 2012-11-14 2014-06-17 Headway Technologies, Inc. Plasmon resonator with dual waveguide excitation for TAMR

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1217526A (en) * 1997-11-13 1999-05-26 索尼株式会社 Apparatus for recording data on magnetic recording medium
US6263288B1 (en) * 1998-07-22 2001-07-17 Eastman Kodak Company Method and apparatus for indicating proximity of film scanner to CRT display monitor
CN1257273A (en) * 1998-11-11 2000-06-21 Tdk株式会社 Magnetic head device
CN103187071A (en) * 2011-12-30 2013-07-03 Hgst荷兰有限公司 Microwave-assisted magnetic recording head and systems thereof with environmental conditions control
CN104050981A (en) * 2013-03-13 2014-09-17 希捷科技有限公司 Contact detection using laser modulation
CN205453690U (en) * 2016-03-14 2016-08-10 张培蕾 Using mobile phones simulation magnetism data transmission's device
CN205723958U (en) * 2016-06-17 2016-11-23 上海易码信息科技有限公司 Magnetic field impulse launches antenna
CN106776412A (en) * 2016-12-21 2017-05-31 广州炒米信息科技有限公司 Interface compatibility circuit
CN109640096A (en) * 2018-12-06 2019-04-16 浙江大学 A kind of concealed communication method based on video decoding electromagnetic leakage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
基于物联网的物理隔离隐蔽信道研究;周正;《中国优秀硕士学位论文全文库》;20190531;全文 *

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