CN107066901A - A kind of disposable mobile memory and its storage and the method for reading data - Google Patents

Abstract

The invention discloses a one-time mobile memory, which includes an interface unit, a data processing unit and a storage unit connected in sequence, wherein the interface unit is used to receive data and instructions to be stored and read and transmit them to the data processing unit ; The data processing unit is used to receive data and instructions from the interface unit and write the received data into the storage unit according to the instruction requirements, to obtain data instructions from the interface unit and to read the storage unit according to the instruction requirements, and to write the received data to the storage unit according to the instruction requirements. The data read from the storage unit is sent to the interface unit; the storage unit adopts a one-time memory for storing the data written by the data processing unit. The invention also discloses the method for storing and reading data in the mobile memory. The invention is used for one-time storage of data, and can ensure that the stored data is not easy to be lost, modified and deleted arbitrarily during long-term storage and use.

Description

A disposable mobile memory and its method for storing and reading data

technical field

The invention relates to data storage technology, in particular to a disposable mobile memory used in a data processing system and a method for storing and reading data.

Background technique

Today, with the rapid transmission of information, data storage has attracted more and more attention. Existing storage devices mainly include mobile storage devices and internal and external storage devices matching the system. Among them, commonly used mobile storage devices such as mobile hard (hard) disk, solid state disk, tape, CD, USB memory, memory card (SD card, MMC card, memory stick, CF card, etc.), etc.

Mobile storage devices have emerged for the convenience of data portability, movement and transmission. They have the advantages of easy connection and disconnection with the data processing system, no loss of stored data without external power supply, and easy portability. The existing mobile storage devices used in data processing systems mainly include rewritable removable storage media and non-rewritable removable storage media. Among them, rewritable removable storage media such as magnetic media, FLASH, etc. Removable storage media such as CDs, etc. Magnetic media, FLASH and other rewritable removable storage media are extremely likely to cause data loss and damage in the event of sudden power failure, drop, and repeated erasure, while CDs and other non-rewritable removable storage media are In the process, the surface is easily worn and deformed, which eventually makes it impossible to read and write data. How to design a non-rewritable removable storage medium that is not easy to lose data during long-term storage and use has become a problem that people generally pay attention to. However, there is no corresponding equipment and no related reports.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a disposable mobile memory used in a data processing system. Once the data is written in its application, it can be guaranteed to be stored in it during long-term preservation and use. The data will not be lost or damaged, nor can it be modified or deleted arbitrarily. The invention also discloses the method for storing and reading data in the mobile memory.

The present invention solves the above problems mainly through the following technical solutions: a disposable mobile memory, including an interface unit, a data processing unit and a storage unit connected in sequence, wherein,

The interface unit is used to receive data and instructions that need to be stored and read and transmit them to the data processing unit;

The data processing unit is used to receive data and instructions from the interface unit and write the received data into the storage unit according to the instruction requirements, to obtain data instructions from the interface unit and to read the storage unit according to the instruction requirements, and to write the data from the interface unit to the storage unit according to the instruction requirements. The data read by the storage unit is sent to the interface unit;

The storage unit is a one-time memory for storing data written by the data processing unit. The one-time storage unit of the present invention is a write-once chip, and each storage location in the one-time storage unit can only be written once, and repeated writing is not allowed, and the data content cannot be changed after writing. However, writing can continue at locations where no data has been written. The mobile storage of the present invention is one-time storage, and the usage scenario is mobile storage.

Further, the interface unit is composed of a bus socket and a bus controller connected to the bus socket, and the bus controller is used to process and transmit the data transmitted through the interface unit according to the bus protocol.

Further, the bus socket is provided with any one or more of USB interface, LAN interface, IEEE1394 interface, Thunderbolt interface, SD interface, CF interface, MMC interface, eSATA interface, and Lightning bus interface. When the present invention is applied, an information exchange channel based on USB, LAN, IEEE1394, Thunderbolt, SD, CF, MMC, eSATA, Lightning bus is established, and the data transmitted is according to USB interface, LAN interface, IEEE1394 interface, Thunderbolt interface, SD interface, CF interface , MMC interface, eSATA interface, Lightning bus standard regulated format packaging, the present invention can be powered by USB, LAN, IEEE1394, Thunderbolt, SD, CF, MMC, eSATA, Lightning and other interfaces or an external independent power supply for the present invention. When the mobile memory of the present invention is used in a data processing system, USB interfaces, LAN interfaces, IEEE1394 interfaces, Thunderbolt interfaces, SD interfaces, CF interfaces, MMC interfaces, eSATA interfaces, and Lightning bus interfaces are used to plug in, and these bus interfaces are data There are corresponding international standards for the common interface of the processing system peripheral interface. user. The information exchange channel between the present embodiment and the data processing system is a USB interface, a LAN interface, an IEEE1394 interface, a Thunderbolt interface, an SD interface, a CF interface, an MMC interface, an eSATA interface, and a Lightning bus. Plug and play at any time, no need to shut down, and there is no huge drive, no mechanical rotating parts, light weight, and fast startup.

Further, the data processing unit is connected with an indicating unit for indicating the working state.

Further, a one-time mobile memory further includes a write protection module, which is connected to the data processing unit and/or the storage unit, and is used for controlling data writing to the one-time memory.

Further, a disposable mobile memory further includes a power supply, and the power supply supplies power to the mobile memory.

The method for storing and reading data based on the above-mentioned one-time mobile memory includes a step of storing data and a step of reading data, wherein,

The step of storing data includes the following steps:

S1.1. Connect the interface unit of the mobile storage to the host computer of the data processing system to complete the initialization of the mobile storage;

S1.2. After the data processing system receives the write instruction and write data sent by the user, it converts the write instruction into a write operation instruction understood and executed by the data processing unit, and transmits the write operation instruction and write data to the interface unit , the interface unit then transmits the write operation instruction and the write data to the data processing unit;

S1.3. The data processing unit transmits the writing result from the interface unit to the data processing system after all the data to be written by the data processing system is completed according to the received write operation instruction;

The step of reading data includes the following steps:

S2.1. Connect the interface unit of the mobile storage to the host computer of the data processing system to complete the initialization of the mobile storage;

S2.2. After the data processing system receives the read instruction sent by the user, it converts the read instruction into a read operation instruction understood and executed by the data processing unit and sends it to the interface unit, and the interface unit then transmits the read operation instruction to the data processing unit ;

S2.3. The data processing unit reads the storage unit according to the read operation instruction, and the read data is output to the data processing system through the interface unit.

Further, when the amount of data written in the step of storing data is large, it is written in batches, and when the amount of data read in the step of reading data is large, it is read in batches. Wherein, the present invention adopts single writing when the amount of written data is small, and adopts single reading when the amount of read data is small.

Further, a method for storing and reading data in a one-time mobile memory also includes a write protection step. The write protection step includes two methods. The specific operation steps of the first method are:

The data processing system sends a write protection instruction to the data processing unit, and the data processing unit turns off the data writing function to the storage unit after receiving the write protection instruction, and/or disables the writing permission function of the storage unit;

The specific operation steps of the second method are: the data processing unit is used to notify the data processing system of the state of the write protection module, and the data processing system judges it to decide whether to store the data. In this way, when the present invention is applied, a "hard" write protection method or a "soft" write protection method can be adopted, or both can be used in combination.

Further, a method for storing and reading data in a one-time mobile memory also includes the step of destroying or erasing data, and the specific operation steps of the destroying or erasing step are:

The data processing system sends an instruction to destroy or erase data to the data processing unit. After receiving the instruction to destroy or erase data, the data processing unit sets all the storage locations of the storage unit or the part of the stored data to "1" or "0". The stored data cannot be read or recovered.

In summary, the present invention has the following beneficial effects: (1) the mobile memory of the present invention has a simple overall structure, uses few components and parts, is convenient to realize, has low cost, is light, easy to carry, and is easy to use, and the written data will not be lost and damage, and cannot be modified or deleted arbitrarily, which can improve the reliability of data storage and facilitate popularization and application.

(2) The application of the present invention is convenient to connect or disconnect with the data processing system, making the operation of the present invention convenient.

(3) The present invention uses USB interface, LAN interface, IEEE1394 interface, Thunderbolt interface, SD interface, CF interface, MMC interface, eSATA interface, Lightning bus interface to realize active external storage, and can be charged and plugged, plug and play , no need to shut down, fast access, large capacity, small size, very convenient to carry, not easy to damage, data can be permanently stored, and at most can connect multiple disposable external storage devices to the computer. The present invention is applicable to any data processing system that supports USB interface, LAN interface, IEEE1394 interface, Thunderbolt interface, SD interface, CF interface, MMC interface, eSATA interface and Lightning bus.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the present invention, constitute a part of the application, and do not limit the embodiments of the present invention. In the attached picture:

Fig. 1 is a structural schematic diagram of a specific embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. As a limitation of the present invention.

Example:

As shown in Figure 1, a kind of one-time mobile memory includes an interface unit, a data processing unit, an indicating unit, a write protection module, a power supply and a storage unit, wherein the interface unit, the processing unit and the storage unit are connected in sequence, and the sequence The unit of connection is a logical relationship and can exist in one or more physical hardware. The interface unit of this embodiment is used to receive the data and instructions that need to be stored and read and transmit them to the data processing unit; the data processing unit is used to receive data and instructions from the interface unit and write the received data into the storage unit according to the instruction requirements , used to obtain data instructions from the interface unit and read the storage unit according to the instruction requirements, and to send the data read from the storage unit to the interface unit; the storage unit uses a one-time memory for storing the data processing unit The written data; the indicating unit is connected with the data processing unit to indicate the working state; the write protection module is connected with the data processing unit and/or the storage unit for controlling the writing of data to the one-time memory; the power supply is for the mobile memory Power supply, power supply methods include bus power supply and external independent power supply.

The interface unit in this embodiment is composed of a bus socket and a bus controller connected to the bus socket. The bus controller is used to process and transmit the data transmitted through the interface unit according to the bus protocol. The bus socket in this embodiment is provided with any one or more interfaces of USB interface, LAN interface, IEEE1394 interface, Thunderbolt interface, SD interface, CF interface, MMC interface, eSATA interface, and Lightning bus interface. When this embodiment is applied, the information to be exchanged is transmitted between the data processing system and the mobile memory of this embodiment according to interface standards such as USB, LAN, IEEE1394, Thunderbolt, SD, CF, MMC, eSATA, and Lightning. The storage unit of this embodiment adopts OTP memory, and OTP memory is a kind of large-capacity electronic memory chip or module, and volume is small, and speed is fast, and data can be stored permanently after writing, and data preservation performance is good, writes back and does not add power In some cases, long-term storage data can be saved. Anti-fuse technology can be used in the chip of the storage unit, and the internal data of the storage unit is organized according to the binary address. In this way, this embodiment adopts one-time storage media (OTP), and provides users with safe, portable, easy-to-play Portable, easy-to-use, and highly reliable mobile storage device, the written data will not be lost, damaged, modified, or deleted, and it supports different operating systems. The data processing unit of this embodiment is realized by microcontrollers such as single-chip microcomputers and embedded chips, and the indicating unit is realized by light-emitting diodes or displays (such as LCD, OLED, etc.), and different light-emitting states or display contents are used to represent different working states.

A method for storing and reading data in a one-time mobile memory, including the steps of storing data and reading data, wherein the step of storing data includes the following steps: S1.1. Connecting the interface unit of the mobile memory to the host computer of the data processing system , to complete the initialization of the mobile memory; S1.2. After the data processing system receives the write command and write data sent by the user, it converts the write command into a write command that the data processing unit understands and executes, and converts the write command and the write The input data is transmitted to the interface unit, and the interface unit then transmits the write operation instruction and write data to the data processing unit; S1.3. The data processing unit waits for all the data to be written by the data processing system to complete according to the received write operation instruction Afterwards, the writing result is sent to the data processing system by the interface unit.

The step of reading data includes the following steps: S2.1. Connect the interface unit of the mobile memory to the host computer of the data processing system to complete the initialization of the mobile memory; S2.2. After the data processing system receives the read instruction sent by the user, it will read The instruction is converted into a read operation instruction understood and executed by the data processing unit and transmitted to the interface unit, and the interface unit then transmits the read operation instruction to the data processing unit; S2.3. The data processing unit reads the storage unit according to the read operation instruction, The read data is output to the data processing system through the interface unit.

The program codes initialized in this embodiment are all stored in the data processing unit. After the mobile memory of this embodiment is powered on, the data processing system will query the bus controller. At this time, the bus controller will generate an interrupt to the data processing unit, and then the data processing The unit gets in touch with the data processing system by operating the bus controller, and the data processing system notifies the data processing unit and the bus controller to make relevant initial settings according to various characteristics or signs fed back by the data processing unit and the bus controller, for the next step Prepare for normal data exchange.

This embodiment also includes a write protection step, wherein the write protection step includes two methods, the specific operation steps of the first method are: the data processing system sends a write protection instruction to the data processing unit, and the data processing unit receives the write protection instruction. Turn off the function of writing data to the storage unit, and/or turn off the writing permission function of the storage unit. The specific operation steps of the second method are: the data processing unit is used to notify the data processing system of the state of the write protection module, and the data processing system judges it to decide whether to store the data. In this way, the mobile memory of this embodiment is provided with a "write protection" function, which can be a "hard" protection mode, a "soft" protection mode, or a combination of the two. The so-called "hard" protection method is to use a state of the write protection module to make the mobile memory unable to write data. When the write protection module of this embodiment is working, the write protection pin of the mobile memory is suspended or grounded, and then cooperate with the data processing unit According to the judgment, the writing function of the mobile memory is disabled, or the "write protection bit" inside the mobile memory is set to a protected state so that the mobile memory cannot write data. In the "soft" protection mode, the data processing unit notifies the data processing system of the status of the write protection module. In this embodiment, the cooperation of the data processing unit and the data processing system provides soft protection for the mobile memory, that is, when the write protection module processes the protection state, the data processing unit will notify the data processing system of the write protection state, and the data processing system will not store data. Steps, so that the content in the mobile memory cannot be changed, so that the information stored by the user is protected.

This embodiment also includes the step of destroying or erasing data, wherein the specific operation steps of the destroying or erasing step are: the data processing system sends an instruction to destroy or erase data to the data processing unit, and the data processing unit receives the command to destroy or erase data After the instruction, all the storage locations of the storage unit or the data part are set to "1" or "0", so that the stored data cannot be read or recovered.

In the actual implementation of this embodiment, if the amount of data to be stored is large, the data can be stored in batches, that is, the first batch of data to be written is sent to the interface unit and written into the storage unit through the data processing unit, and then The second batch of data to be written is sent to the interface unit and written into the storage unit through the data processing unit, and so on, until the last batch of data to be written is written to the storage unit. In the actual implementation of this embodiment, if the amount of data to be read is large, the data can be read in batches, that is, the first batch of data is read first, and then the second batch of data is read until the last batch of data is read. .

When the mobile memory of this embodiment is applied, the driver module of the mobile memory described in this embodiment is loaded into the data processing system, and under the management of the data processing system, the driver module accepts the user's operation request and sends the The operation request is processed into an operation command, which is sent to the data processing unit, and after being processed by the data processing unit, the result and processing status are returned to the drive module, and the process of processing the external storage device by the data processing system is completed, that is, the data exchange between the two is completed process.

When the data processing system receives a read operation, it will send the operation to the drive module, and the drive module will convert it into the operation mode of the mobile memory. Afterwards, the driver module further packages the converted operation with bus data, the data processing system sends the read request to the data processing unit through the bus, the data processing unit executes the read operation, and returns the read data and status information to the driver module, and then the driver module sends the read data and status information to the data processing system. So far, the read operation is completed.

When the data processing system receives a write operation, it will send the operation to the drive module, and the drive module will convert it into the operation mode of the mobile memory. When the write operation reaches the mobile storage, if the write location already contains valid data, new data cannot be written, and new data can only be written in the write data area where no data has been written. After the writing operation is completed, the drive module returns the status information of the writing operation to the data processing system. At this point, the write operation is completed.

Whenever the host computer of the data processing system inserts a removable storage device, the data processing system will automatically detect the insertion of the storage device through the bus interface. At this time, the data processing system will immediately activate the drive module, and after the drive module is activated, it will perform an initialization operation. During the above operation process, the data processing unit will receive and process the operation requests from the drive module and the data processing system. After the drive module completes the insertion process, it enters the waiting state for the operation request.

When the user pulls out the mobile memory from the bus interface of the data processing system, the data processing unit immediately terminates execution, and the data processing system can automatically detect that the device has been pulled out from the data processing system. At this time, the data processing system will Immediately notify the drive module of this event, and after receiving the notification, the drive module immediately executes relevant processing and instructs the data processing system to delete the removable memory corresponding to the storage device.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (10)

1. a kind of disposable mobile memory, it is characterised in that including the interface unit being sequentially connected with, data processing unit and deposit Storage unit, wherein,

Interface unit, for receiving needs storage and the data read and its instruction and being sent to data processing unit；

Data processing unit, for receiving data and instruction from interface unit and being required to deposit the data write-in of reception according to instruction Storage unit, for obtaining data command from interface unit and being required to be read out memory cell according to instruction, and for inciting somebody to action The data read from memory cell are sent to interface unit；

Memory cell, using disposable memory, the data write for data storage processing unit.

2. a kind of disposable mobile memory according to claim 1, it is characterised in that the interface unit is inserted by bus Seat and the bus control unit composition being connected with bus hub, the bus control unit are used to press the data transmitted through interface unit Bus protocol is handled and is transmitted.

3. a kind of disposable mobile memory according to claim 2, it is characterised in that the bus hub is provided with USB interface, LAN interface, IEEE1394 interfaces, Thunderbolt interfaces, SD interface, CF interfaces, MMC interfaces, eSATA interfaces, Any one or more interface in Lightning EBIs.

4. a kind of disposable mobile memory according to claim 1, it is characterised in that the data processing unit connection There is the indicating member for indicating operating status.

5. a kind of disposable mobile memory according to claim 1, it is characterised in that also including write-protect module, institute State write-protect module to be connected with data processing unit and/or memory cell, for controlling the data write-in to disposable memory.

6. a kind of disposable mobile memory according to claim 1, it is characterised in that also including power supply, the power supply It is powered for mobile memory.

7. based on a kind of disposable mobile memory storage described in any one in claim 1~6 and the side of reading data Method, it is characterised in that including data storage step and reading data step, wherein,

The data storage step comprises the following steps：

S1.1, the interface unit of mobile memory and the main frame of data handling system connected, complete mobile memory initialization；

S1.2, pending data processing system are received after the write command and write-in data of user's transmission, and write command is converted into data The write operation instruction that processing unit understands and performed, and send write operation instruction and write-in data to interface unit, interface list Write operation is instructed and write data again and sends data processing unit to by member；

S1.3, data processing unit are instructed according to the write operation received, and pending data processing system needs all data write After the completion of, write-in result is sent to data handling system by interface unit；

The reading data step comprises the following steps：

S2.1, the interface unit of mobile memory and the main frame of data handling system connected, complete mobile memory initialization；

S2.2, pending data processing system are received after the reading instruction of user's transmission, and reading instruction is converted into data processing unit reason The read operation for solving and performing instructs and sends interface unit to, and interface unit sends read operation instruction to data processing list again Member；

S2.3, data processing unit are read out according to read operation instruction to memory cell, and the data of reading are defeated through interface unit Go out into data handling system.

8. a kind of disposable mobile memory storage according to claim 7 and the method for reading data, it is characterised in that The data volume of the data storage step write-in writes when big by the way of in batches, described to read the number that data step is read Read according to when measuring big by the way of in batches.

9. a kind of disposable mobile memory storage according to claim 7 and the method for reading data, it is characterised in that Also include write-protect step, the write-protect step includes two ways, and the concrete operation step of first way is：

Data handling system sends write-protect instruction to data processing unit, and data processing unit is turned off after receiving write-protect instruction Function is allowed to close to the data write-in functions of memory cell, and/or by memory cell write-in；

The concrete operation step of the second way is：Using data processing unit the state notifying of write-protect module to data at Reason system, is judged it by data handling system, so as to decide whether to carry out data storage step.

10. a kind of disposable mobile memory storage according to claim 7 and the method for reading data, its feature exist In, in addition to destroy or erasing data step, the concrete operation step of the destruction or erasing step is：

Data handling system is sent to data processing unit destroys or erasing data command, and data processing unit receives destruction or wiped Except after data command that memory cell is all or have the storage location of data division and be all set to " 1 " or " 0 " so that storage Data can not be read or be recovered.