CN107644177B - Physical isolation type data one-way transmission device and method - Google Patents
Physical isolation type data one-way transmission device and method Download PDFInfo
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- CN107644177B CN107644177B CN201610571386.0A CN201610571386A CN107644177B CN 107644177 B CN107644177 B CN 107644177B CN 201610571386 A CN201610571386 A CN 201610571386A CN 107644177 B CN107644177 B CN 107644177B
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Abstract
The invention discloses a physical isolation type data one-way transmission device, which comprises a data loading module, a data reading module, a data recording medium and a driving motor, wherein the data loading module and the data reading module are spaced at a certain distance; the driving motor drives the data recording medium to rotate in a single direction, and the part loaded with data in the data recording medium moves towards the data reading module. The device of the invention is based on independent recording media such as optical disks, magnetic disks and the like, and the data loading module and the data transmission module are not connected and communicated with each other, so that the device is strictly physically isolated; the device of the invention realizes the unidirectional data transmission only by the simple mechanical motion of multiple points, thereby greatly improving the safety in the data transmission process. The data loading module and the data reading module can load and read data at the same time, so that data can be transmitted uninterruptedly, and the data transmission speed is greatly improved.
Description
Technical Field
The present invention relates to data storage and data transmission, and more particularly, to a physically isolated unidirectional data transmission apparatus and method.
Background
In data communication, the networks with different security levels can be between an internal network and an external network, or between a public network and a private network, and between a secret network and an insecure network. In order to realize and ensure the safety of the network data exchange process, the most safe mode is physical separation, and the physical isolation between networks of different levels is realized.
Current data storage media primarily include optical disks, magnetic tape, and the like. Optical discs are often used to store important data as a stable storage carrier. In the process of storing data, the data stored in the external network is firstly recorded into a blank optical disc, and then the data stored in the recorded optical disc is stored into the internal network for storage.
In the existing physical isolation optical disc storage device, an optical disc is only used as a carrier for transferring data from an internal network to an external network or from the external network to the internal network, the optical disc is also transferred from the internal network to the external network or from the external network to the internal network in the data transfer process, and the transfer process is often completed by a manipulator with a complicated structure and a large volume.
For example, patent application No. 201510106461.1 entitled physically-isolated optical disc reading/writing device, which uses a rotating cantilever to realize the transfer of optical discs, and improves the security and safety of data in the process of unidirectional transmission from an internal network to an external network through the independent control (i.e. physical isolation) of the internal network and the external network. However, the technical scheme has the following defects: on one hand, the blank CD cassette, the recording CD driver, the read-only CD driver and the recovery CD cassette form a rectangular array, and the manipulator moves and operates between the blank CD cassette, the recording CD driver, the read-only CD driver and the recovery CD cassette. Because intranet CD-ROM drive is connected with the intranet, and outer net CD-ROM drive is connected with the extranet, and intranet CD-ROM drive is separately, in order to guarantee intranet and extranet physical isolation, the CD must remove between intranet and outer net CD-ROM as the data carrier, and the removal of CD must rely on the operation of manipulator to realize, leads to whole device bulky, heavy, the cost is high. On the other hand, because the number of blank optical discs accommodated by the optical disc cartridge is limited, in the data exchange process, the situation that the blank optical discs are insufficient is easy to occur, so that the optical discs need to be added manually, and the requirement that the ferry machine is unattended for a long time cannot be met.
In summary, on the premise of ensuring the stability and security of data transfer, it is very necessary to reduce the size of the device, improve the data transmission efficiency, save the cost, and improve the utilization rate of the optical disc.
Disclosure of Invention
In view of this, the invention provides a physical isolation type data one-way transmission device, which can realize strict physical isolation between loading data and reading data, does not need to be provided with a mechanical arm, has small volume, can effectively improve the data transmission efficiency and saves the cost.
The invention is realized by the following steps: a physical isolation type data one-way transmission device comprises a data loading module, a data reading module, a data recording medium and a driving motor, wherein,
the data loading module is used for loading data into the data recording medium;
the data reading module is used for reading data in the data recording medium;
the data loading module and the data reading module are spaced at a certain distance;
the driving motor is used for driving the data recording medium to rotate in a single direction, so that the part loaded with data in the data recording medium moves towards the data reading module.
Further, the device further comprises a data erasing module, wherein the data erasing module is used for erasing the data in the data recording medium after the data reading module reads the data in the data recording medium.
Further, the data recording medium is an optical disc, a magnetic disc, or a magnetic tape.
Preferably, the data recording medium is an optical disc, the data loading module is a first optical pickup assembly, the first optical pickup assembly is configured to record data into the optical disc, the first optical pickup assembly includes a first optical pickup movable in a radial direction of the optical disc, the data reading module is a second optical pickup assembly, the second optical pickup assembly includes a second optical pickup movable in the radial direction of the optical disc, the second optical pickup assembly is configured to read data loaded in the optical disc, and the driving motor is configured to drive the optical disc to rotate in a single direction.
Further, the optical disc is an erasable optical disc, the data erasing module is the first optical pickup assembly, and the first optical pickup assembly is further configured to erase data on the optical disc after the data is recorded on the optical disc.
Further, the optical pickup device also comprises a first control circuit, a second control circuit and a physical isolation unit, wherein the first control circuit is connected with the first optical pickup assembly, and the second control circuit is connected with the second optical pickup assembly; the physical isolation unit is used for separating the first control circuit from the second control circuit.
Alternatively, the data erasing module is a third optical pickup assembly including a third optical pickup movable in a radial direction of the optical disc, the third optical pickup assembly being configured to erase data on the optical disc after the second optical pickup assembly reads the data loaded on the optical disc.
The invention also provides a physical isolation type unidirectional data transmission method based on the physical isolation type unidirectional data transmission device, which comprises the following steps:
s1, loading data into a data recording medium by the data loading module, wherein the data recording medium is driven by a driving motor to rotate in a single direction, and the part loaded with the data in the data recording medium moves to the data reading module;
and S2, reading the data in the data recording medium by the data reading module.
Further, the data loading module in step S1 is a first optical pickup assembly, and the data recording medium is an optical disc; the data reading module in step S2 is a second optical pickup assembly;
step S1 further includes: the first optical pickup assembly records single-segment data or a plurality of segments of data on an optical disc, and the optical disc is driven by a motor to rotate in a single direction;
the recording of the single or multiple data segments onto the optical disc by the first optical pickup assembly described in step S1 further includes: adding preset header data before the starting position of the single segment of data or the plurality of segments of data, adding preset tail data after the ending position of the single segment of data or the plurality of segments of data, and recording the single segment of data or the plurality of segments of data containing the header data and the tail data onto an optical disc by the first optical pickup assembly;
step S2 further includes: the second optical pickup assembly reads data on the optical disc.
Further, step S2 is followed by step S3: the first optical pickup assembly or the third optical pickup assembly erases data on the optical disc.
The implementation of the invention has the following beneficial effects:
(1) the physical isolation type data one-way transmission device provided by the invention is based on independent recording media such as optical disks, magnetic disks and the like, and the data loading module and the data transmission module are not connected and in data communication, so that strict physical isolation is realized; the device of the invention realizes the unidirectional data transmission only by the simple mechanical motion of multiple points, thereby greatly improving the safety in the data transmission process. In addition, the data loading module and the data reading module can load and read data simultaneously, thereby realizing uninterrupted data transmission and greatly improving the data transmission speed.
(2) The optical disc is used as a data carrier or a data recording medium, two independent optical pickup assemblies are arranged to respectively realize the loading and reading of data, the two optical pickup assemblies can simultaneously operate the optical disc by means of the unidirectional rotation of the optical disc, and when the first optical pickup assembly records data, the second optical pickup assembly can read the data after a tiny time delay, so that the data writing and reading are nearly synchronous, and the data transmission speed is greatly improved. The invention does not need to transfer the optical disk from one optical drive to another optical drive, thereby saving the actions of transferring the optical disk such as grabbing and placing the disk by a manipulator, avoiding the mechanical loss and the optical disk loss caused by grabbing and placing the disk by the manipulator while improving the data transmission speed, greatly reducing the volume of the device, reducing the material consumption and further effectively reducing the production cost.
(3) The data recording medium of the invention is erasable, and the data is erased after the data loading is finished, and the data loading and the data reading are realized uninterruptedly by driving the optical disk to rotate in one direction by the driving motor. The erasable optical disc can be repeatedly used for thousands of times, and the optical disc can be repeatedly used. The invention effectively reduces the consumption of the optical disk and saves the cost by repeatedly using the blank optical disk while ensuring the safety and the stability of data transfer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions and advantages of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a perspective view of a physically isolated data unidirectional transmission device according to a first embodiment and a second embodiment of the present invention;
fig. 2 is a top view of a physically isolated data unidirectional transmission apparatus according to a first embodiment and a second embodiment of the present invention;
in the figure: 1-first optical pickup assembly, 2-drive motor, 3-optical disc, 4-second optical pickup assembly, 5-first control circuit, 6-second control circuit, 7-physical isolation unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The first embodiment is as follows:
the invention provides a physical isolation type data one-way transmission device, which comprises a data loading module, a data reading module, a data recording medium and a driving motor, wherein,
the data loading module is used for loading data into the data recording medium;
the data reading module is used for reading data in the data recording medium;
the data loading module and the data reading module are spaced at a certain distance;
the driving motor is used for driving the data recording medium to rotate in a single direction, so that the part loaded with data in the data recording medium moves towards the data reading module.
The following describes the apparatus of the present invention, taking the data recording medium as an optical disc as an example: as shown in fig. 1 and fig. 2, the data recording medium is an optical disc 3, the data loading module is a first optical pickup assembly 1, the first optical pickup assembly 1 is configured to record data onto the optical disc 3, the first optical pickup assembly 1 includes a first optical pickup movable in a radial direction of the optical disc 3, the data reading module is a second optical pickup assembly 4, the second optical pickup assembly 4 includes a second optical pickup movable in the radial direction of the optical disc 3, the second optical pickup assembly 4 is configured to read data loaded on the optical disc 3, and the driving motor 2 is configured to drive the optical disc 3 to rotate in a single direction, so that a portion of the optical disc loaded with data moves to the second optical pickup assembly 2.
The first optical pickup assembly 1 includes, in addition to the first optical pickup, a first displacement mechanism that enables the first optical pickup to move in the radial direction of the optical disc. The second optical pickup assembly 4 includes, in addition to the second optical pickup, a second displacement mechanism that enables the second optical pickup to move in the radial direction of the optical disc.
The rotation center of the optical disc 3 mentioned in the present invention is the geometric center of the optical disc 3, that is, the geometric center of the optical disc 3 does not have any displacement in the present invention.
In order to facilitate the reading of data by the second optical pickup assembly 4, the optical disc 3 is driven by the driving motor 2 to rotate at a constant speed, here, at a constant angular velocity. Fig. 2 shows the rotation direction of the driving motor 2, and the rotation direction of the driving motor 2 is to ensure that the time for reading data by the second optical pickup assembly 4 lags behind the time for recording data by the first optical pickup assembly 1, that is, the second optical pickup assembly 4 can read data after the first optical pickup assembly 1 records data.
Further, in order to improve the utilization rate of the optical disc and improve the data reading and writing efficiency, the optical disc 3 is an erasable optical disc, and the first optical pickup assembly 1 is further configured to erase the data recorded on the optical disc 3 after recording the data on the optical disc 3.
The device of the invention also comprises a first control circuit 5, a second control circuit 6 and a physical isolation unit 7, wherein the first control circuit 5 is connected with the first optical pickup assembly 1 and is used for controlling the first optical pickup assembly 1 to record and erase data; the second control circuit 6 is connected to the second optical pickup assembly 4 and is used for controlling the second optical pickup assembly 4 to read data; the physical isolation unit 7 is used to separate the first control circuit 5 from the second control circuit 6.
As can be seen from fig. 1 and 2, in a specific application scenario, the first optical pickup assembly 1 and the second optical pickup assembly 4 may be located at different positions above or below the optical disc 3, but it is ensured that the first optical pickup assembly 1 and the second optical pickup assembly 2 can operate on the optical disc 3 at the same time and are arranged at intervals, for example, one is on the left side of the optical disc and the other is on the right side of the optical disc. In the present invention, the optical disc 3 is rotated only by the driving motor 2, and no other displacement occurs.
The second optical pickup assembly 4 can only read data and cannot record data; the first optical pickup assembly 1 and the second optical pickup assembly do not have any form of connection, and are completely separated and independently operated. There is also no connection between the first control circuit 5 and the second control circuit 6, and in order to ensure the safety of data, a physical isolation unit 7 may be arranged between the first control circuit 5 and the second control circuit 6, and the physical isolation unit 7 may be a wall or a room or a larger isolation space. Of course, those skilled in the art understand that the physical isolation unit 7 may not be disposed between the first control circuit 5 and the second control circuit 6.
In a specific application scenario, in order to improve data transmission efficiency, the number of the first optical pickup assemblies 1 is two, and when one of the first optical pickup assemblies 1 erases data in the optical disc 3, the other first optical pickup assembly 1 is used to inscribe data onto the optical disc 3.
Of course, as an alternative embodiment, the number of the first optical pickup assembly 1 and the second optical pickup assembly 2 may be multiple, and multiple optical pickup assemblies record data simultaneously, and the data reading by multiple optical pickup assemblies can greatly improve the data transmission efficiency.
Alternatively, in the apparatus of the present invention, the data recording medium may be a separate recording medium such as a magnetic disk or a magnetic tape.
Example two:
as another embodiment of the apparatus of the present invention, as shown in fig. 1 and fig. 2, the data recording medium is an optical disc 3, the data loading module is a first optical pickup assembly 1, the first optical pickup assembly 1 is used for recording data into the optical disc 3, the data reading module is a second optical pickup assembly 4, the second optical pickup assembly 4 is used for reading the data loaded in the optical disc 3, and the driving motor 2 is used for driving the optical disc 3 to rotate in a single direction.
In order to facilitate the reading of data by the second optical pickup assembly 4, the optical disc 3 is driven by the driving motor 2 to rotate at a constant speed, here, at a constant angular velocity. The rotation direction of the driving motor 2 is to ensure that the time for reading data by the second optical pickup assembly 4 lags behind the time for writing data by the first optical pickup assembly 1, that is, after writing data by the first optical pickup assembly 1, the second optical pickup assembly 4 can read data.
Further, in order to improve the utilization rate of the optical disc and improve the data reading and writing efficiency, the optical disc 3 is a rewritable optical disc.
The apparatus further comprises a third optical pickup assembly (not shown in the figure) for erasing the data recorded on the first optical pickup assembly 1, wherein the third optical pickup assembly comprises a third optical pickup movable in the radial direction of the optical disc 3, and of course, in the position setting, the third optical pickup assembly is arranged behind the second optical pickup assembly, and the rotation direction of the driving motor 2 is such that the time for erasing the data by the third optical pickup assembly 4 lags behind the time for reading the data by the second optical pickup assembly 4, that is, the data can be erased by the third optical pickup assembly after the data is read by the second optical pickup assembly 4. The third optical pickup assembly includes, in addition to the third optical pickup, a third displacement mechanism that is capable of moving the third optical pickup in a radial direction of the optical disc.
The device of the invention also comprises a first control circuit 5, a second control circuit 6 and a physical isolation unit, wherein the first control circuit 5 is connected with the first optical pickup assembly 1 and the third optical pickup assembly and is used for controlling the first optical pickup assembly 1 to record data and controlling the third optical pickup assembly to erase data; the second control circuit 6 is connected to the second optical pickup assembly 4, and is configured to control the second optical pickup assembly 4 to read data. The physical isolation unit is used for separating the first control circuit 5 from the second control circuit 6.
As an alternative, the present invention may include a third control circuit connected to the third optical pickup assembly for controlling the third optical pickup assembly to erase data; the first control circuit 5 is connected only to the first optical pickup assembly 1.
Of course, as an alternative embodiment, the number of the first optical pickup assembly 1, the second optical pickup assembly 2 and the third optical pickup assembly may be multiple, and the simultaneous recording, reading and erasing of data by multiple optical pickup assemblies can greatly improve the data transmission efficiency.
Example three:
the invention also provides a physical isolation type unidirectional data transmission method based on the physical isolation type unidirectional data transmission device, which comprises the following steps:
s1, loading data into a data recording medium by the data loading module, wherein the data recording medium is driven by a driving motor to rotate in a single direction, and the part loaded with the data in the data recording medium moves to the data reading module;
the data loading module in step S1 is a first optical pickup assembly, and the data recording medium is an optical disc;
specifically, the first optical pickup assembly records a single segment of data on an optical disc, and the optical disc is driven by a motor to rotate at a constant speed; in order to ensure that the data is completely and accurately read, preset header data is added before the start position of the single segment of data, and preset trailer data is added after the end position of the single segment of data, wherein the header data and the trailer data can be a segment of data code, and the first optical pickup assembly records the single segment of data containing the header data and the trailer data on the optical disc. The header data and trailer data may be replaced.
And S2, reading the data in the data recording medium by the data reading module.
The data reading module in step S2 is a second optical pickup assembly; specifically, the optical disc is driven by the motor to rotate at a constant speed, the second optical pickup assembly scans preset header data near the initial position of the data area of the optical disc, once the header data is read, the second optical pickup assembly starts to read the data on the optical disc until the trailer data is read, stops reading, returns to the initial position, and continues to read the next segment of data.
Preferably, step S2 is followed by: step S3, the first optical pickup assembly erases the data recorded on the optical disc.
After the first optical pickup assembly finishes recording the single segment of data containing the header data and the trailer data, returning to the initial position to erase all recorded data. When the first optical pickup assembly erases the data in the optical disc, the first optical pickup assembly can only erase the data recorded at the previous time without erasing the data at all, thereby effectively saving the erasing time and improving the reading and writing efficiency.
Of course, those skilled in the art should understand that step S3 is not necessary, and step S1 and step S2 can also implement data unidirectional transmission and physical isolation.
Example four:
the invention also provides a physical isolation type unidirectional data transmission method based on the physical isolation type unidirectional data transmission device, which comprises the following steps:
s1, loading data into a data recording medium by the data loading module, wherein the data recording medium is driven by a driving motor to rotate in a single direction, and the part loaded with the data in the data recording medium moves to the data reading module;
the data loading module in step S1 is a first optical pickup assembly, and the data recording medium is an optical disc;
specifically, the first optical pickup assembly records a plurality of segments of data on an optical disc, for example, the optical disc can be nearly completely recorded, and the optical disc is driven by a motor to rotate at a constant speed;
in order to ensure that data is read completely and accurately, preset header data is added before the starting position of the plurality of segments of data, and preset tail data is added after the ending position of the plurality of segments of data. The start position of the plurality of pieces of data referred to herein is the start position of the first piece of data in the plurality of pieces of data, and the end position of the plurality of pieces of data refers to the end position of the last piece of data in the plurality of pieces of data. The header data and the trailer data may be a piece of data code, and the first optical pickup assembly writes a single piece of data containing the header data and the trailer data onto the optical disc. The header data and trailer data may be replaced.
And S2, reading the data in the data recording medium by the data reading module.
The data reading module in step S2 is a second optical pickup assembly; specifically, the optical disc is driven by the motor to rotate at a constant speed, the second optical pickup assembly scans preset header data near the initial position of the data area of the optical disc, once the header data is read, the second optical pickup assembly starts to read the data on the optical disc until the trailer data is read, stops reading, returns to the initial position, and continues to read the next segment of data.
In a specific application scenario, when the data recorded by the first optical pickup assembly is close to the whole optical disc, no header data may be added. After the second optical pickup assembly detects the header data, the contents of the entire optical disc are read.
Preferably, step S2 is followed by: step S3, the first optical pickup assembly erases the data recorded on the optical disc.
After the first optical pickup assembly finishes recording the plurality of data segments including the header data and the trailer data, returning to the initial position to erase all recorded data. When the first optical pickup assembly erases the data in the optical disc, the first optical pickup assembly can only erase the data recorded at the previous time without erasing the data at all, thereby effectively saving the erasing time and improving the reading and writing efficiency.
Of course, those skilled in the art should understand that step S3 is not necessary, and step S1 and step S2 can also implement data unidirectional transmission and physical isolation.
Example five:
the invention also provides a physical isolation type unidirectional data transmission method based on the physical isolation type unidirectional data transmission device, which comprises the following steps:
s1, loading data into a data recording medium by the data loading module, wherein the data recording medium is driven by a driving motor to rotate in a single direction, and the part loaded with the data in the data recording medium moves to the data reading module;
the data loading module in step S1 is a first optical pickup assembly, and the data recording medium is an optical disc;
specifically, the first optical pickup assembly records data on an optical disc, and the optical disc is driven by a motor to rotate at a constant speed; the data referred to herein may be a single piece of data or a plurality of pieces of data, or may be a piece of data of a fixed length. In order to ensure that the data is completely and accurately read, preset header data is added before the starting position of the single-segment data or the plurality of segments of data, and preset tail data is added after the ending position of the single-segment data or the plurality of segments of data, wherein the header data and the tail data can be a segment of data code, and the first optical pickup assembly records the single-segment data containing the header data and the tail data on the optical disc. The header data and trailer data may be replaced.
And S2, reading the data in the data recording medium by the data reading module.
The data reading module in step S2 is a second optical pickup assembly; specifically, if the data to be read is a single segment of data or a plurality of segments of data, the optical disc is driven by the motor to rotate at a constant speed, the second optical pickup assembly scans preset header data near the initial position of the data area of the optical disc, and once the header data is read, the second optical pickup assembly starts to read the data on the optical disc until the trailer data is read, stops reading, returns to the initial position, and continues to read the next segment of data. If the data to be read is fixed-length data, the second optical pickup assembly only needs to scan the preset header data without scanning the trailer data.
Preferably, a third optical pickup assembly for erasing data is further included. Step S2 is followed by: step S3, the third optical pickup assembly erases the data recorded on the optical disc.
Specifically, after the first optical pickup assembly finishes recording data, the first optical pickup assembly returns to the initial position to record new data continuously. After the second optical pickup assembly reads the data recorded by the first optical pickup assembly, when the third optical pickup assembly erases the data in the optical disc, the data recorded by the first optical pickup assembly can be erased only without erasing the data in the whole optical disc, so that the erasing time can be effectively saved, and the reading and writing efficiency can be improved.
Of course, those skilled in the art should understand that step S3 is not necessary, and step S1 and step S2 can also implement data unidirectional transmission and physical isolation.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. The physical isolation type data one-way transmission device is characterized by comprising a data loading module, a data reading module, a data recording medium, a driving motor and a data erasing module, wherein the data loading module is used for loading data into the data recording medium; the data loading module is a first optical pickup assembly (1);
the data reading module is used for reading data in the data recording medium; the data reading module is a second optical pickup assembly (4), and the second optical pickup assembly (4) can only read data and cannot record data;
the data loading module and the data reading module are spaced at a certain distance; the first optical pickup assembly (1) and the second optical pickup assembly (4) are capable of operating on the data recording medium simultaneously by unidirectional rotation of the data recording medium;
the driving motor is used for driving the data recording medium to rotate in a single direction, and the rotation direction of the driving motor ensures that the time for reading data by the second optical pickup assembly (4) lags behind the time for burning data by the first optical pickup assembly (1), so that the part loaded with data in the data recording medium moves to the data reading module;
the data erasing module is used for erasing the data in the data recording medium after the data reading module reads the data in the data recording medium, erasing the data after loading the data, and realizing uninterrupted data loading and data reading by driving the optical disc (3) to rotate in one direction by the driving motor.
2. A physically separated data unidirectional transmission device according to claim 1, wherein the data recording medium is an optical disc, a magnetic disc or a magnetic tape.
3. The physically isolated data unidirectional transmission apparatus according to claim 1, wherein the data recording medium is an optical disc (3), the first optical pickup assembly (1) comprises a first optical pickup movable in a radial direction of the optical disc (3), the first optical pickup assembly (1) is used for recording data into the optical disc (3), the second optical pickup assembly (4) comprises a second optical pickup movable in the radial direction of the optical disc (3), the second optical pickup assembly (4) is used for reading data loaded in the optical disc (3), and the driving motor is used for driving the optical disc (3) to rotate in a unidirectional direction.
4. The physically isolated unidirectional data transmission apparatus according to claim 3, wherein the optical disc (3) is a rewritable optical disc, the data erasing module is the first optical pickup assembly (1), and the first optical pickup assembly (1) is further configured to erase data on the optical disc (3) after recording the data on the optical disc (3).
5. The physically isolated data unidirectional transmission apparatus according to claim 3, further comprising a first control circuit (5), a second control circuit (6) and a physically isolated unit (7), wherein the first control circuit (5) is connected with the first optical pickup assembly (1), and the second control circuit (6) is connected with the second optical pickup assembly (4); the physical isolation unit (7) is used for separating the first control circuit (5) from the second control circuit (6).
6. The physically isolated data unidirectional transmission apparatus according to claim 3, wherein the data erasing module is a third optical pickup assembly including a third optical pickup movable in a radial direction of the optical disc (3), and the third optical pickup assembly is configured to erase data on the optical disc (3) after the second optical pickup assembly reads data loaded on the optical disc (3).
7. A physically isolated unidirectional data transmission method based on a physically isolated unidirectional data transmission device of any of claims 1 to 6, comprising the steps of:
s1, loading data into a data recording medium by the data loading module, wherein the data recording medium is driven by a driving motor to rotate in a single direction, and the part loaded with the data in the data recording medium moves to the data reading module;
and S2, reading the data in the data recording medium by the data reading module.
8. The physically separated unidirectional data transmission method of claim 7, wherein the data loading module in step S1 is a first optical pickup assembly, and the data recording medium is an optical disc; the data reading module in step S2 is a second optical pickup assembly;
step S1 further includes: the first optical pickup assembly records single-segment data or a plurality of segments of data on an optical disc, and the optical disc is driven by a motor to rotate in a single direction;
the recording of the single or multiple data segments onto the optical disc by the first optical pickup assembly described in step S1 further includes: adding preset header data before the starting position of the single segment of data or the plurality of segments of data, adding preset tail data after the ending position of the single segment of data or the plurality of segments of data, and recording the single segment of data or the plurality of segments of data containing the header data and the tail data onto an optical disc by the first optical pickup assembly; step S2 further includes: the second optical pickup assembly reads data on the optical disc.
9. The physically isolated unidirectional data transmission method of claim 8, further comprising step S3 after step S2: the first optical pickup assembly or the third optical pickup assembly erases data on the optical disc.
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|---|---|---|---|---|
| CN110880334B (en) * | 2018-09-05 | 2021-05-04 | 苏州互盟信息存储技术有限公司 | Ferry device |
| CN110880333B (en) * | 2018-09-05 | 2021-06-15 | 苏州互盟信息存储技术有限公司 | Data transmission device and method |
| CN113921044B (en) * | 2020-07-08 | 2023-02-17 | 苏州互盟信息存储技术有限公司 | Inter-network physical isolation data device and system |
| CN114205159B (en) * | 2021-12-10 | 2024-04-16 | 北京睿云信安科技有限公司 | Cross-network optical turntable isolation ferrying machine and cross-network automatic data ferrying method |
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| CN1383142A (en) * | 2001-04-23 | 2002-12-04 | 于君 | Data storage device using rotating disk as data carrier |
| CN201654792U (en) * | 2010-03-26 | 2010-11-24 | 童超 | Safety information exchange system |
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