CN107145308B - Mobile terminal, SD card operation control method and system thereof, and storage device - Google Patents
Mobile terminal, SD card operation control method and system thereof, and storage device Download PDFInfo
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- CN107145308B CN107145308B CN201710308909.7A CN201710308909A CN107145308B CN 107145308 B CN107145308 B CN 107145308B CN 201710308909 A CN201710308909 A CN 201710308909A CN 107145308 B CN107145308 B CN 107145308B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/062—Securing storage systems
- G06F3/0622—Securing storage systems in relation to access
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0656—Data buffering arrangements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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Abstract
The invention discloses a mobile terminal, an SD card operation control method, a system and a storage device thereof, wherein the method comprises the following steps: when the data are detected to be written into the Secure Digital (SD) card, a section of memory is allocated in advance for storing the data to be copied into the SD card, and the section of memory is called as a buffer memory; copying data to be copied into the secure SD card into a buffer memory, copying the data in the buffer memory into the secure SD card, and emptying the buffer memory when the data is copied into the secure SD card; and when the SD card power-off instruction is detected, checking whether the memory of the buffer area is empty, if so, executing the power-off instruction, and if not, not executing the power-off instruction. The invention can keep the whole process safe when the safe SD card is read and written, thereby ensuring the safety of the mobile terminal when in use and facilitating the use of users.
Description
Technical Field
The invention relates to the field of mobile terminals, in particular to a mobile terminal, an SD card operation control method, an SD card operation control system and a storage device of the mobile terminal.
Background
At present, along with the popularization of mobile terminals, users pay more and more attention to the safety problem of the mobile terminals in the using process, so that SD cards based on safety design appear in the market; the principle of these SD cards is that when reading or writing the SD card, a special command needs to be sent to put the SD card in a secure mode to enable the reading or writing operation on the SD card.
For the secure SD card, the following problems exist in the prior art:
when the secure mode is set for the SD card, performing read-write operation on the SD card, for example, it takes 5 minutes to copy a file; if the CPU is excessively occupied by the game due to synchronous game playing of the mobile terminal user, short interruption occurs to the SD card copied file, such as short interruption for 5 seconds; at this time, the SD card program considers that the temporary reading and writing is finished, and the power supply to the SD card is stopped for saving power.
When the CPU is idle, the SD card is powered up again, and then the rest data is copied; however, at this time, the SD card does not set the security mode, so that a part of the entire copied file data is copied in the security mode, and another part is not copied in the security mode, which is likely to cause an unsafe factor.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The present invention provides a mobile terminal, an SD card operation control method, an SD card operation control system, and a storage device thereof, aiming at the above-mentioned defects in the prior art. The invention provides an operation control method of a Secure Digital (SD) card of a mobile terminal, aiming at ensuring the safety of the whole process when the secure SD card is read and written, thereby ensuring the safety of the mobile terminal when in use and facilitating the use of users.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an SD card operation control method based on a mobile terminal comprises the following steps:
A. when the data are detected to be written into the Secure Digital (SD) card, a section of memory is allocated in advance for storing the data to be copied into the SD card, and the section of memory is called as a buffer memory;
B. copying data to be copied into the secure SD card into a buffer memory, copying the data in the buffer memory into the secure SD card, and emptying the buffer memory when the data is copied into the secure SD card;
C. and when the SD card power-off instruction is detected, checking whether the memory of the buffer area is empty, if so, executing the power-off instruction, and if not, not executing the power-off instruction.
The operation control method of the SD card based on the mobile terminal, wherein the step B comprises the following steps:
b1, setting the SD card to be in a safe mode;
b2, copying the data to be copied into the secure SD card into the buffer memory;
b3, when the data is copied into the secure SD card, the segment of memory will be cleared.
The SD card operation control method based on the mobile terminal, wherein the setting the SD card to the secure mode in step B1 includes: the secure mode is implemented by setting the secure SD card related registers.
The operation control method of the SD card based on the mobile terminal, wherein the step A further comprises the following steps: and allocating a section of memory in the memory for storing the data to be copied into the secure SD card, wherein the section of memory is used for firstly storing the data to be copied into the secure SD card.
The operation control method of the SD card based on the mobile terminal, wherein the step B3 further includes: in the process of copying the data, if the copying is finished, the data in the memory section is emptied.
The SD card operation control method based on the mobile terminal, wherein the step C comprises the following steps:
c1, detecting the SD card power-off instruction issued by the system;
and C2, checking whether the memory segment is empty, if so, executing a power-off instruction, otherwise, not executing the power-off instruction.
An SD card operation control system based on a mobile terminal, comprising:
the pre-allocation module is used for pre-allocating a section of memory for storing data to be copied into the Secure Digital (SD) card when the situation that the data needs to be written into the SD card is detected, and the section of memory is called as a buffer memory;
the copying control module is used for copying data to be copied into the secure SD card into the memory of the buffer area, copying the data in the memory of the buffer area into the secure SD card, and emptying the memory of the buffer area when the data is copied into the secure SD card;
and the detection control module is used for checking whether the memory of the buffer area is empty or not when the SD card power-off instruction is detected, executing the power-off instruction if the memory of the buffer area is empty, and not executing the power-off instruction if the memory of the buffer area is not empty.
The SD card operation control system based on the mobile terminal, wherein the copy control module comprises:
the setting unit is used for setting the SD card to be in a safe mode;
the copying unit is used for copying data to be copied into the secure SD card into a buffer memory;
and the emptying unit is used for emptying the section of the memory when the data is copied into the secure SD card.
The SD card operation control system based on the mobile terminal, wherein the safety mode comprises: the secure mode is implemented by setting the secure SD card related registers.
The SD card operation control system based on the mobile terminal, wherein the detection control module comprises:
the detection unit is used for detecting an SD card power-off instruction issued by the system;
and the control unit is used for checking whether the memory section is empty or not, executing a power-off instruction if the memory section is empty, and otherwise, not executing the power-off instruction.
A mobile terminal comprising a processor, and a memory coupled to the processor,
the memory stores a computer program which, when executed by the processor, implements any one of the steps of the mobile terminal-based SD card operation control method;
the processor is used for calling the program instructions in the memory so as to execute the steps of any one of the above-mentioned operation control methods of the SD card based on the mobile terminal.
A storage device, wherein the storage device stores a computer program which, when executed by a processor, implements any of the steps of the mobile terminal-based SD card operation control method.
According to the mobile terminal, the SD card operation control method, the SD card operation control system and the storage device, when the method detects that data needs to be written into the secure SD card, a section of memory is allocated in advance for storing the data to be copied into the secure SD card; when the data is copied to the secure SD card, clearing the section of memory; and when the SD card power-off instruction is detected, checking whether the memory is empty, if so, executing the power-off instruction, otherwise, not executing the power-off instruction. The SD card reading and writing device can keep the whole process safe when the SD card is read and written, thereby ensuring the safety of the mobile terminal during use and facilitating the use of users.
Drawings
Fig. 1 is a flow chart of a preferred embodiment of the SD card operation control method based on a mobile terminal according to the present invention.
Fig. 2 is a functional block diagram of a preferred embodiment of the SD card operation control system based on a mobile terminal according to the present invention.
Fig. 3 is a functional block diagram of a mobile terminal embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating an SD card operation control method based on a mobile terminal according to a preferred embodiment of the present invention. As shown in fig. 1, the SD card operation control method based on a mobile terminal according to the embodiment of the present invention includes the following steps:
step S100, when detecting that data needs to be written into the secure SD card, pre-allocating a section of memory for storing the data to be copied into the secure SD card, and calling the section of memory as a buffer memory;
in the embodiment of the invention, when the data is detected to be written into the Secure Digital (SD) card, a section of memory is allocated in the memory for storing the data to be copied into the secure SD card, the data to be copied into the secure SD card is firstly put into the section of memory, and the section of memory is called as a buffer memory.
Step S200, copying the data to be copied to the secure SD card to the buffer memory, copying the data in the buffer memory to the secure SD card, and emptying the buffer memory when the data is copied to the secure SD card.
In the embodiment of the invention, when data is copied, the SD card is set to be in a safe mode; firstly copying data to be copied into the secure SD card into a memory of a buffer area; this segment of memory will be cleared when the data is copied into the secure SD card.
In the present invention, the setting the SD card to the secure mode includes: the secure mode is implemented by setting the secure SD card related registers. That is, the secure SD card is different from the current general SD card in that the secure SD card can set a secure mode to achieve the purpose of data security, and the secure mode is realized by setting the relevant registers of the secure SD card, for example, a secure SD card can enter the secure mode by setting the registers 0x2004 to 0x23,0x2008 to 0x6A, and 0x200B to 0x 11.
In the process of copying the data in the step, if the data is copied, the data in the memory section is emptied. I.e. the data in the buffer memory is emptied.
Step S300, when the SD card power-off instruction is detected, whether the memory of the buffer area is empty is checked, if so, the power-off instruction is executed, and if not, the power-off instruction is not executed.
In the embodiment of the invention, when an SD card power-off instruction issued by a system is detected; and checking whether the memory section is empty, if so, executing a power-off instruction, otherwise, not executing the power-off instruction. That is, until the segment of memory is empty, the power-off command is ignored, so as to ensure that the entire data copying process is performed in the secure mode of the secure SD card.
The invention can keep the whole process safe when the safe SD card is read and written, thereby ensuring the safety of the mobile terminal in use, improving the user experience and facilitating the use of the user.
Based on the above method embodiment, the present invention further provides an SD card operation control system based on a mobile terminal, as shown in fig. 2, the system includes:
the pre-allocation module 210 is configured to, when it is detected that data needs to be written into the secure SD card, pre-allocate a segment of memory for storing the data to be copied into the secure SD card, and refer to the segment of memory as a buffer memory; as described above.
The copy control module 220 is configured to copy data to be copied to the secure SD card to the buffer memory, copy data in the buffer memory to the secure SD card, and empty the buffer memory when the data is copied to the secure SD card; as described above.
The detection control module 230 is configured to check whether the memory of the buffer area is empty when the SD card power-off instruction is detected, execute the power-off instruction if the memory of the buffer area is empty, and not execute the power-off instruction if the memory of the buffer area is not empty; as described above.
Further, the SD card operation control system based on a mobile terminal, wherein the copy control module includes:
the setting unit is used for setting the SD card to be in a safe mode; as described above.
The copying unit is used for copying data to be copied into the secure SD card into a buffer memory; as described above.
The clearing unit is used for clearing the section of the memory when the data are copied into the secure SD card; as described above.
The SD card operation control system based on the mobile terminal, wherein the safety mode comprises: the safe mode is realized by setting a relevant register of the safe SD card; as described above.
The SD card operation control system based on the mobile terminal, wherein the detection control module comprises:
the detection unit is used for detecting an SD card power-off instruction issued by the system; as described above.
The control unit is used for checking whether the memory section is empty or not, executing a power-off instruction if the memory section is empty, and otherwise, not executing the power-off instruction; as described above.
An embodiment of the present invention further provides a mobile terminal, as shown in fig. 3, the mobile terminal includes a processor 10, and a memory 20 connected to the processor 10,
the memory 20 stores a computer program which, when executed by the processor 10, implements any one of the steps of the mobile terminal-based SD card operation control method;
the processor 10 is configured to call program instructions in the memory to execute any of the above steps of the mobile terminal-based SD card operation control method. As described above.
The embodiment of the invention also provides a storage device, wherein the storage device stores a computer program, and the computer program realizes the steps of any one of the SD card operation control methods based on the mobile terminal when being executed by a processor. As described above.
In summary, in the mobile terminal, the SD card operation control method, the system, and the storage device provided by the present invention, when it is detected that data needs to be written into the secure SD card, a segment of memory is allocated in advance for storing the data to be copied into the secure SD card; when the data is copied to the secure SD card, clearing the section of memory; and when the SD card power-off instruction is detected, checking whether the memory is empty, if so, executing the power-off instruction, otherwise, not executing the power-off instruction. The SD card reading and writing device can keep the whole process safe when the SD card is read and written, thereby ensuring the safety of the mobile terminal during use and facilitating the use of users.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (4)
1. An SD card operation control method based on a mobile terminal is characterized by comprising the following steps:
A. when the data are detected to be written into the Secure Digital (SD) card, a section of memory is allocated in advance for storing the data to be copied into the SD card, and the section of memory is called as a buffer memory; the safe SD card achieves the purpose of data safety by setting a safety mode; the safe mode is realized by setting a relevant register of the safe SD card;
B. when copying data, the SD card is in the secure mode by sending a special command; copying data to be copied into the secure SD card into a buffer memory, copying the data in the buffer memory into the secure SD card, and emptying the buffer memory if the data is copied in the process of copying the data when the data is copied into the secure SD card;
C. and when the SD card power-off instruction is detected, checking whether the memory of the buffer area is empty, if so, executing the power-off instruction, and if not, not executing the power-off instruction.
2. An SD card operation control system based on a mobile terminal, comprising:
the pre-allocation module is used for pre-allocating a section of memory for storing data to be copied into the Secure Digital (SD) card when the situation that the data needs to be written into the SD card is detected, and the section of memory is called as a buffer memory; the safe SD card achieves the purpose of data safety by setting a safety mode; the safe mode is realized by setting a relevant register of the safe SD card;
the copy control module is used for enabling the SD card to be in the safe mode by sending a special command when data is copied; copying data to be copied into the secure SD card into a buffer memory, copying the data in the buffer memory into the secure SD card, and emptying the buffer memory if the data is copied in the process of copying the data when the data is copied into the secure SD card;
and the detection control module is used for checking whether the memory of the buffer area is empty or not when the SD card power-off instruction is detected, executing the power-off instruction if the memory of the buffer area is empty, and not executing the power-off instruction if the memory of the buffer area is not empty.
3. A mobile terminal comprising a processor, and a memory coupled to the processor,
the memory stores a computer program which, when executed by the processor, implements the steps of the mobile terminal-based SD card operation control method according to any one of claim 1;
the processor is used for calling the program instructions in the memory to execute the steps of the SD card operation control method based on mobile terminal according to any claim 1.
4. A storage device, characterized in that the storage device stores a computer program, which when executed by a processor implements the steps of the mobile terminal-based SD card operation control method according to claim 1.
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| CN201710308909.7A CN107145308B (en) | 2017-05-04 | 2017-05-04 | Mobile terminal, SD card operation control method and system thereof, and storage device |
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| CN113242321B (en) * | 2021-07-12 | 2021-11-02 | 广东睿江云计算股份有限公司 | Data transmission method for mobile storage device |
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