CN110096451B - Data storage method and device - Google Patents

Abstract

The embodiment of the present application discloses a data storage method and device. The method includes: the terminal receives valid data to be stored; the terminal configures a data header according to preset parameters and valid data, and the data header is used to indicate the attribute of the valid data; The data header, valid data and invalid data generate a data packet, and the invalid data is used to fill the data packet so that the length of the data packet is the same as the length of the data page to be written, and the data page to be written is the data of the data block in the backup area of the flash memory page; the terminal stores the data packet into the data page to be written. The embodiment of the present application enables each data block to store multiple data packets after being erased once, thereby greatly increasing the writing times of each data block, and further meeting the service life requirement in the process of simulating EEPROM.

Description

A data storage method and device

technical field

The embodiments of the present application relate to the technical field of communications, and more specifically, to a data storage method and device.

Background technique

EEPROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory) is a small-capacity storage device widely used in small embedded systems, which can be used to store simple configuration parameters and user volume settings, etc. data. EEPROM has the following three characteristics: 1. Non-volatile: data will not be lost when power is off; 2. Random access: you can use any offset address to read and write data in bytes; 3. Long life: you can Supports million-level write times. At present, in order to reduce the cost of the terminal, the industry usually uses the flash memory and memory of the terminal to simulate the EEPROM, thereby saving the hardware overhead brought by the EEPROM.

The following briefly introduces how related technologies use the flash memory and memory of the terminal to simulate EEPROM: when the terminal has target data that needs to be stored in the EEPROM, the terminal will store the target data in the memory and flash memory respectively. The purpose of storing the target data in memory is to simulate that EEPROM can read data quickly, and the purpose of storing target data in flash memory is to simulate that the data of EERPOM will not be lost when the power is turned off. During the initialization process of the terminal, the terminal will copy the target data in the flash memory to the internal memory, so that the terminal can quickly obtain the target data in the internal memory.

In the process of storing the target data in the flash memory, the above related technologies will store the target data in fixed data blocks in the flash memory. Normally, a data block in the flash memory has an erasure life of 100,000 times, that is, a data block will be scrapped after being written 100,000 times. However, the EEPROM can support millions of times of write times, so the above-mentioned technologies related to simulating the EEPROM cannot meet the requirement on service life.

Contents of the invention

The embodiment of the present application provides a data storage method and device, so as to meet the service life requirement in the process of simulating the EEPROM.

The embodiment of this application is implemented in this way:

In the first aspect, the embodiment of the present application provides a data storage method, the method comprising:

The terminal receives valid data to be stored;

The terminal is configured according to the preset parameters and the valid data header, which is used to indicate the attributes of the valid data;

The terminal generates a data packet according to the data header, valid data and invalid data. The invalid data is used to fill the data packet so that the length of the data packet is the same as the length of the data page to be written. The data page to be written is a data block in the backup area of the flash memory data page;

The terminal stores the data packet into the data page to be written.

Wherein, in the process of generating the data packet according to the data header, valid data and invalid data, the terminal needs to ensure that the length of the data packet is the same as the length of the data page to be written, so that there is a corresponding relationship between the data packet and the data page. After storing multiple data packets in the data block of the backup sub-area of the flash memory, the terminal can quickly read each data packet in the data block of the backup sub-area of the flash memory based on the correspondence between data packets and data pages. Therefore, the solution provided by the embodiment of the present application can enable each data block to store multiple data packets after being erased once, thereby greatly increasing the number of write times of each data block, and then satisfying the requirements for use in the process of simulating EEPROM. life expectancy requirements.

In a possible implementation manner, the terminal generates a data packet according to the data header, valid data and invalid data, including:

The terminal calculates the length to be filled according to the length of the data header, the length of the valid data and the length of the data page to be written;

The terminal generates invalid data according to the length to be filled;

The terminal combines the data header, valid data and invalid data into a data packet.

Optionally, the terminal may also write the length to be filled into the data header.

Among them, the terminal calculates the length to be filled according to the length of the data header, the length of the valid data and the length of the data page to be written, and generates invalid data according to the length to be filled, so as to ensure that the data header, valid data and invalid data are combined into data The length of the packet is the same as the length of the data page to be written.

In a possible implementation manner, the terminal generates a data packet according to the data header, valid data and invalid data, including:

The terminal obtains the verification identifier in the data header;

The terminal calculates the valid data according to the verification algorithm corresponding to the verification identifier to obtain the verification result;

The terminal writes the verification result into the data header to obtain the target data header;

The terminal calculates the length to be filled according to the length of the target data header, the length of the valid data, and the length of the data page to be written;

The terminal generates invalid data according to the length to be filled;

The endpoint combines the destination header, valid data, and invalid data into packets.

Wherein, the terminal stores the verification result in the target data header, so that the valid data can be verified at any time to judge the correctness of the valid data.

In a possible implementation manner, the terminal generates a data packet according to the data header, valid data and invalid data, including:

The terminal obtains the compression identifier in the data header;

The terminal compresses the valid data according to the compression algorithm corresponding to the compression identifier to obtain the compressed data;

The terminal calculates the length to be filled according to the length of the data header, the length of the compressed data, and the length of the data page to be written;

The terminal generates invalid data according to the length to be filled;

The endpoint combines headers, compressed data, and invalid data into packets.

Wherein, since the storage space occupied by the compressed data is smaller than that of the valid data, the terminal combines the data header, the compressed data and the invalid data into a data packet, which can save the storage space of the flash memory of the terminal.

In a possible implementation manner, the terminal generates a data packet according to the data header, valid data and invalid data, including:

The terminal obtains the encrypted identifier in the data header;

The terminal encrypts the valid data according to the encryption algorithm corresponding to the encryption identifier to obtain the encrypted data;

The terminal calculates the length to be filled according to the length of the data header, the length of the encrypted data, and the length of the data page to be written;

The terminal generates invalid data according to the length to be filled;

The endpoint combines the data header, encrypted data, and invalid data into a data packet.

Wherein, since the encrypted data has higher security than the valid data, the terminal combines the data header, the encrypted data and the invalid data into a data packet, which can improve the security of the valid data.

In a possible implementation manner, the terminal generates a data packet according to the data header, valid data and invalid data, including:

The terminal acquires the compression identifier, encryption identifier and verification identifier in the data header;

The terminal compresses the valid data according to the compression algorithm corresponding to the compression identifier to obtain the compressed data;

The terminal encrypts the compressed data according to the encryption algorithm corresponding to the encryption identifier to obtain the encrypted data;

The terminal calculates the encrypted data according to the verification algorithm corresponding to the verification identifier to obtain the verification result;

The terminal writes the verification result into the data header to obtain the target data header;

The terminal calculates the length to be filled according to the length of the target data header, the length of the encrypted data, and the length of the data page to be written;

The terminal generates invalid data according to the length to be filled;

The terminal combines the target data header, encrypted data, and invalid data into a data packet.

Wherein, the terminal compresses the valid data to obtain the compressed data, and then encrypts the compressed data to obtain the encrypted data, which not only saves the storage space of the flash memory of the terminal, but also improves the security of the valid data. In addition, the terminal calculates the encrypted data based on the verification algorithm corresponding to the verification identifier to obtain the verification result, and stores the verification result in the target data header, so that the valid data can be verified at any time to determine the validity of the valid data. sex.

In a possible implementation manner, the length of the invalid data is the difference between the length of the data page to be written and the length of the initial data, and the length of the initial data is the sum of the length of the data header and the length of the valid data.

In a possible implementation manner, after the terminal receives the valid data to be stored, the method further includes:

The terminal obtains the offset address of the valid data;

The terminal stores the valid data in the storage space corresponding to the offset address in the simulated storage area of the memory.

Wherein, in order to ensure that the terminal can quickly read the valid data, the terminal will store the valid data in the storage space corresponding to the offset address in the simulated storage area of the memory.

In a possible implementation manner, after the terminal stores the data packet in the data page to be written, the method further includes:

When the terminal is initialized, the terminal obtains N data packets stored in the data page of each data block in the backup area of the flash memory. The backup area of the flash memory includes at least two backup sub-areas, and each backup in the at least two backup sub-areas The sub-areas each include at least two data blocks, each of the at least two data blocks includes at least two data pages, and N is greater than or equal to 1;

The terminal stores the valid data of the N data packets in the analog storage area of the internal memory.

Wherein, each data block can store multiple data packets after being erased once, thereby greatly improving the writing times of each data block; moreover, the backup area of the flash memory includes at least two backup sub-areas, at least two Each backup sub-area in the backup sub-area includes at least two data blocks, so the embodiment of the present application has more data blocks for storing data packets, even if some data blocks are damaged, it will not affect the process of simulating EEPROM , so as to better meet the service life requirement in the process of simulating the EEPROM.

In a possible implementation manner, the terminal stores the valid data of N data packets in an analog storage area of the memory, including:

The terminal applies for a temporary storage area in the memory;

The terminal stores N data packets in the temporary storage area of the memory;

The terminal stores the valid data of N data packets in the temporary storage area of the memory in the simulated storage area of the memory;

Temporary storage area where the terminal frees memory.

Among them, in order to quickly store N data packets stored in the data pages of each data block in the backup area of the flash memory to the simulated storage area of the memory, it is necessary to save the data pages of each data block in the backup area of the flash memory at one time. The N data packets stored in the internal memory are stored in the temporary storage area of the internal memory, and then the valid data in the N data packets are stored in the analog storage area of the internal memory from the temporary storage area of the internal memory, so the embodiment of the present application can Store the valid data of N data packets in the flash memory to the analog storage area of the memory more quickly. Moreover, the temporary storage area of the internal memory is a storage area temporarily applied for in the internal memory. After the temporary storage area is used up, the temporary storage area of the internal memory needs to be released, thereby saving system resources of the terminal.

In a possible implementation, the terminal stores the valid data of the N data packets in the temporary storage area of the memory in the simulated storage area of the memory, including:

The terminal selects the target data packet in the N data packets in the temporary storage area of the memory;

The terminal extracts the target data of the target data packet;

The terminal extracts the offset address in the data header of the target data packet;

The terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

When the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute the step of the terminal extracting the target data of the target data packet;

When the target data packet is the last data packet in the N data packets, continue to perform the step of releasing the temporary storage area of the memory by the terminal.

Wherein, after the terminal stores N data packets in the temporary storage area of the memory, the terminal needs to store the target data of each data packet in the within the simulated storage area of memory.

In a possible implementation, the terminal stores the valid data of the N data packets in the temporary storage area of the memory in the simulated storage area of the memory, including:

The terminal selects the target data packet in the N data packets in the temporary storage area of the memory;

The terminal extracts the target data of the target data packet;

The terminal extracts the verification identifier, the first verification result and the offset address in the data header of the target data packet;

The terminal calculates the target data according to the verification algorithm corresponding to the verification identifier to obtain a second verification result;

When the first verification result is the same as the second verification result, the terminal stores the target data in the storage space corresponding to the offset address in the analog storage area of the memory;

When the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute the step of the terminal extracting the target data of the target data packet;

When the target data packet is the last data packet in the N data packets, continue to perform the step of releasing the temporary storage area of the memory by the terminal.

Among them, in order to verify whether the target data of the target data packet has an error during transmission, the terminal needs to extract the verification identifier and the first verification result in the data header of the target data packet, and then, the terminal performs the verification according to the corresponding verification identifier. The algorithm calculates the target data to obtain the second verification result. If the first verification result is the same as the second verification result, it means that there is no error in the transmission process of the target data. At this time, the target data can be stored in the storage space corresponding to the offset address in the analog storage area of the memory. If the first verification result is different from the second verification result, it means that the target data has an error during transmission, and the terminal cannot store the target data in the storage space corresponding to the offset address in the analog storage area of the memory.

In a possible implementation, the terminal stores the valid data of the N data packets in the temporary storage area of the memory in the simulated storage area of the memory, including:

The terminal selects the target data packet in the N data packets in the temporary storage area of the memory;

The terminal extracts the encrypted data of the target data packet;

The terminal extracts the encryption identifier and offset address in the data header of the target data packet;

The terminal decrypts the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain the target data;

The terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

When the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute the step of terminal extracting the encrypted data of the target data packet;

When the target data packet is the last data packet in the N data packets, continue to perform the step of releasing the temporary storage area of the memory by the terminal.

Among them, if the data header of the target data packet has an encryption identifier, it means that the encrypted data obtained by encrypting the target data is stored in the target data packet, so the terminal needs to decrypt the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain target data, and store the target data in the storage space corresponding to the offset address in the analog storage area of the memory, thus ensuring the security of the target data.

In a possible implementation, the terminal stores the valid data of the N data packets in the temporary storage area of the memory in the simulated storage area of the memory, including:

The terminal selects the target data packet in the N data packets in the temporary storage area of the memory;

The terminal extracts the compressed data of the target data packet;

The terminal extracts the compression identifier and offset address in the data header of the target data packet;

The terminal decompresses the compressed data according to the compression algorithm corresponding to the compression identifier to obtain the target data;

The terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

When the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute the step of terminal extracting the compressed data of the target data packet;

When the target data packet is the last data packet in the N data packets, continue to perform the step of releasing the temporary storage area of the memory by the terminal.

Among them, if the data header of the target data packet has a compression identifier, it means that the compressed data stored in the target data packet is the compressed data obtained after compressing the target data, so the terminal needs to decompress the compressed data according to the compression algorithm corresponding to the compression identifier. The target data is obtained, and the target data is stored in the storage space corresponding to the offset address in the simulated storage area of the memory, thereby saving the storage space of the flash memory.

In a possible implementation, the terminal stores the valid data of the N data packets in the temporary storage area of the memory in the simulated storage area of the memory, including:

The terminal selects the target data packet in the N data packets in the temporary storage area of the memory;

The terminal extracts the encrypted data of the target data packet;

The terminal extracts the verification identification, the first verification result, the encryption identification, the compression identification and the offset address in the data header of the target data packet;

The terminal calculates the encrypted data according to the verification algorithm corresponding to the verification identifier to obtain a second verification result;

When the first verification result is the same as the second verification result, the terminal decrypts the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain the compressed data;

The terminal decrypts the compressed data according to the compression algorithm corresponding to the compression identifier to obtain the target data;

The terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

When the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute the step of terminal extracting the encrypted data of the target data packet;

When the target data packet is the last data packet in the N data packets, continue to perform the step of releasing the temporary storage area of the memory by the terminal.

Wherein, if the data header of the target data packet has a compression identifier, an encryption identifier, a verification identifier, and a first verification result, it means that the target data packet stores compressed data obtained after compressing the target data, and the compressed data The encrypted data obtained after encryption can also verify whether an error occurs in the encrypted data of the target data packet during transmission. After the terminal extracts the encrypted data of the target data packet, the terminal needs to first verify whether the first verification result is the same as the second verification result. If yes, it means that no error occurred in the target data during transmission; The encryption algorithm corresponding to the logo decrypts the encrypted data to obtain the compressed data, and then decrypts the compressed data according to the compression algorithm corresponding to the compression logo to obtain the target data, and finally stores the target data in the analog storage area of the memory corresponding to the offset address In the storage space, not only the storage space of the flash memory is saved, but also the security of valid data is improved. In addition, it is also possible to verify whether the encrypted data of the target data packet has errors during transmission.

In a second aspect, an embodiment of the present application provides a data storage device, which includes:

A receiving module, configured to receive valid data to be stored;

The configuration module is used to configure the data header according to preset parameters and valid data, and the data header is used to indicate the attributes of the valid data;

The generation module is used to generate a data packet according to the data header, valid data and invalid data, and the invalid data is used to fill the data packet so that the length of the data packet is the same as the length of the data page to be written, and the data page to be written is a backup of the flash memory the data pages of the data blocks in the region;

The storage module is used for storing the data packet in the data page to be written.

In a possible implementation, the generating module is specifically configured to calculate the length to be filled according to the length of the data header, the length of the valid data, and the length of the data page to be written; the terminal generates invalid data according to the length to be filled; the terminal generates the data The header, valid data, and invalid data are combined into a packet.

In a possible implementation, the generation module is specifically used to obtain the compression identifier, encryption identifier, and verification identifier in the data header; compress the valid data according to the compression algorithm corresponding to the compression identifier to obtain compressed data; The encryption algorithm encrypts the compressed data to obtain the encrypted data; calculates the encrypted data according to the verification algorithm corresponding to the verification identification to obtain the verification result; writes the verification result into the data header to obtain the target data header; according to the target data header The length of the encrypted data and the length of the data page to be written calculate the length to be filled; generate invalid data according to the length to be filled; combine the target data header, encrypted data and invalid data into a data packet.

In a possible implementation manner, the device further includes:

The first obtaining module is used to obtain the offset address of the valid data;

The second storage module is used to store valid data in the storage space corresponding to the offset address in the simulated storage area of the internal memory.

In a possible implementation manner, the device further includes:

The second obtaining module is used to obtain N data packets stored in the data page of each data block in the backup area of the flash memory when the terminal is initialized. The backup area of the flash memory includes at least two backup sub-areas, and at least two backup sub-areas Each backup sub-area in the area includes at least two data blocks, each of the at least two data blocks includes at least two data pages, and N is greater than or equal to 1;

The third storage module is used to store the valid data of the N data packets in the analog storage area of the internal memory.

In a possible implementation, the third storage module is specifically used to apply for a temporary storage area in the memory; store N data packets in the temporary storage area of the memory; store N data packets in the temporary storage area of the memory The valid data of the package is stored in the simulated storage area of the memory; the temporary storage area of the memory is released.

In a possible implementation, the third storage module is specifically used to select a target data packet in the N data packets in the temporary storage area of the memory; extract the encrypted data of the target data packet; extract the data header of the target data packet The verification identification, the first verification result, the encryption identification, the compression identification and the offset address in the verification identification; the encrypted data is calculated according to the verification algorithm corresponding to the verification identification to obtain the second verification result; the first verification result and When the second verification results are the same, decrypt the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain the compressed data; decrypt the compressed data according to the compression algorithm corresponding to the compression identifier to obtain the target data; store the target data to the memory simulation In the storage space corresponding to the offset address in the storage area; when the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute the terminal to extract the target The target data of the data packet; when the target data packet is the last data packet in the N data packets, continue to execute the terminal to release the temporary storage area of the internal memory.

In a third aspect, the embodiment of the present application provides a data storage device, which includes: a transceiver, a processor, and a memory, wherein the transceiver, the memory, and the processor communicate with each other through an internal connection path, and the memory uses For storing instructions, the processor is used to execute the instructions stored in the memory to control the transceiver to receive signals and to control the transceiver to send signals, and when the processor executes the instructions stored in the memory, the device causes the processor to perform the above-mentioned The first aspect or the method in any possible implementation manner of the first aspect.

In the fourth aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores instructions, and when it is run on a computer, the computer executes the above-mentioned first aspect or any of the first aspects. A method in one possible implementation.

In the fifth aspect, the embodiments of the present application provide a computer program product including instructions, which, when run on a computer, cause the computer to execute the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

In the sixth aspect, the embodiment of the present application provides a chip, the chip includes a processor and/or program instructions, and when the chip is running, it can implement the above-mentioned first aspect or any of the possible implementations of the first aspect Methods.

Description of drawings

FIG. 1 is a schematic diagram of a terminal provided in an embodiment of the present application;

Figure 2 is a schematic diagram of storing multiple data packets in multiple data pages in the data block of the flash memory provided by the embodiment of the present application;

FIG. 3 is a flowchart of a data storage method provided by an embodiment of the present application;

Figure 4 is a flowchart of another data storage method provided by the embodiment of the present application;

The flowchart shown in FIG. 5 is a detailed embodiment based on step S26 in FIG. 4 provided by the embodiment of the present application;

FIG. 6 is a schematic diagram of a data storage device provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of another data storage device provided by the embodiment of the present application.

Detailed ways

As mentioned above in the background art, the related technology of simulating EEPROM cannot meet the requirement on service life. The data storage method adopted by the relevant technology of simulating EEPROM is: directly store the data packet composed of the data header and valid data into the data block, and each data block stores a data packet. Among them, since the length of each data header and each valid data is different, the length of each data packet is also different. In this case, if multiple data packets are stored in one data block, then the controller It is impossible to know the corresponding relationship between the multiple data packets and the multiple data pages of the data block, and the controller cannot correctly extract multiple data packets from the multiple data pages of the data block.

In order to avoid confusion in the process of the controller extracting data packets from multiple data pages of the data block, the related technologies mentioned in the background technology can only store one data packet in each data block, each storing a data packet The data block in the block can only store the next data packet after being erased. Since a data block usually has an erasure life of 100,000 times, and each data block can only store one data packet after being erased once, a data block will be scrapped after storing 100,000 data packets, that is, a data block A block is written to 100,000 times before it becomes obsolete. However, the EEPROM can support write times of millions of times, so the related technology of simulating EEPROM mentioned in the background art cannot meet the requirement on service life.

For this reason, the embodiment of the present application provides a data storage method and device, which can meet the service life requirement in the process of simulating the EEPROM.

Please refer to Figure 1 and Figure 2, Figure 1 shows a schematic diagram of a terminal provided by the embodiment of the present application, and Figure 2 shows multiple data pages in the data block of the flash memory provided by the embodiment of the present application Schematic diagram of storing multiple packets.

In the embodiments shown in FIG. 1 and FIG. 2 , the terminal 00 provided in the embodiment of the present application includes a controller 01 , a memory 02 , a flash memory 03 and an input/output interface 04 . Wherein, the memory 02 includes a simulated storage area and a temporary storage area, the simulated storage area is used to simulate the storage space of the EEPROM, and the temporary storage area is used to temporarily store the data packets provided by the flash memory 03; the flash memory 03 includes at least two backup sub-areas, each The backup sub-area includes at least two backup sub-areas, and each data block includes at least two data pages; the input and output interface 04 may include an AV output interface, a signal input interface, an infrared remote control signal receiver, and the like.

The terminal 00 provided by the embodiment of the present application mainly includes three working scenarios. The first working scenario is the process in which the terminal 00 receives valid data sent by the external device 20. The second working scenario is the process of initializing the terminal 00. The third working scenario is The scenario is the process of reading valid data of terminal 00.

Please combine FIG. 1 and FIG. 2 to briefly introduce the first working scenario of the terminal 00 , that is, the process in which the terminal 00 receives valid data sent by the external device 20 .

When the terminal 00 is turned on, if the external device 20 sends valid data and offset address to the terminal 00 , then the terminal 00 uses the input and output interface 04 to receive the valid data sent by the external device 20 . First, in order to ensure that the controller 01 can quickly read valid data, the controller 01 will store the valid data in the storage space corresponding to the offset address in the analog storage area of the memory 02 . Then, in order to ensure that the valid data can always be stored in the terminal 00, the controller 01 will store the valid data in the flash memory 03.

Among them, the controller 01 will store valid data in the flash memory 03 in the following manner. Specifically, the controller 01 will configure the valid data data header according to the preset parameters, and generate invalid data according to the length of the data page of the data block in the backup sub-area of the flash memory 03, the length of the data header and the length of the valid data, so that The length of the data packet generated according to the data header, valid data and invalid data is equal to the multiple of the length of a data page in the data block of the backup sub-area of the flash memory 03, and the data block of the backup sub-area of the flash memory 03 is utilized based on the specific value of the multiple Store a data packet in one or more data pages, so as to ensure that the length of each data packet is equal to the multiple of the length of a data page. When the length of each data packet is equal to a multiple of the length of a data page, the controller 01 can extract multiple data packets from multiple data pages of the data block based on the correspondence between the data packet and the data page, Therefore, each data block can store multiple data packets after being erased once, thereby greatly improving the write times of each data block. Therefore, the solution provided by the embodiment of the present application can meet the requirements of use in the process of simulating EEPROM life expectancy requirements.

The first working scenario of the terminal 00 will be described below with reference to FIG. 1 , FIG. 2 and specific examples.

For example, assuming that the length of each data block in a backup sub-area of flash memory 03 is 128K bytes, and each data block includes 64 data pages, then the length of each data page is 2K bytes, that is, 2048 words Festival. After the external device 20 sends 20 bytes of valid data to the input and output interface 04 of the terminal 00, first, the controller 01 will store the 20 bytes of valid data in the analog storage area of the memory 02 to ensure that the data stored in the memory 02 Valid data in the simulated storage area can be read out quickly. Then, the controller 01 configures the valid data header according to the preset parameters, assuming that the length of the successfully configured data header is 28 bytes, in order to ensure that the length of each data packet is equal to the multiple of the length of a data page, it is necessary to Calculate the length of invalid data. When the sum of the length of the data header and the length of the valid data is less than the length of a data page, then the length of the invalid data=the length of the data page-the length of the valid data-the length of the data header=2048 bytes-20 bytes-28 words Section = 2000 bytes. Secondly, the controller 01 generates 2000 bytes of invalid data, and combines the 28 bytes of data header, 20 bytes of valid data and 2000 bytes of invalid data into data packet A (as shown in data packet A in Figure 2) , the length of the data packet A is 2048 bytes, that is, 2K bytes. Finally, the controller 01 uses the data page 0 (such as data page 0 in FIG. 2 ) in the data block of the backup sub-area of the flash memory 03 to store the data packet A.

In the above example, since the lengths of the data page and the data packet are both 2K bytes, it is ensured that the length of the data packet is equal to the length of the data page. In the above example, a data block includes 64 data pages of 2K bytes. If the length of each data packet is 2K bytes, then the number of times a data block is used to store data packets is 64 times, that is, a data block Erase can be used 64 times once, and a data block has an erasure life of 100,000 times, then the data storage method provided by the embodiment of the present application can make the number of times a data block is stored in data reach 64 times×100,000 times= 6.4 million times, which can meet the service life requirements in the process of simulating EEPROM.

In addition, when the controller 01 receives the valid data and generates the data header, if the controller 01 calculates that the sum of the length of the valid data and the length of the data header is less than the length of a data page, then the controller 01 will The length of the data packet generated with invalid data must be equal to the length of a data page. If the controller 01 calculates that the sum of the length of the valid data and the length of the data header is greater than the length of one data page and less than the length of two data pages, then the data packet generated by the controller 01 according to the data header, valid data and invalid data The length should be equal to the length of two data pages. If the controller 01 calculates that the sum of the length of the valid data and the length of the data header is greater than the length of two data pages and less than the length of three data pages, then the data packet generated by the controller 01 according to the data header, valid data and invalid data The length of the packet must be equal to the length of three data pages, and so on, always keeping the length of the generated data packet equal to a multiple of the length of the data page.

For example, assuming that the length of each data block in a backup subarea of the flash memory 03 is 128K bytes, and each data block includes 64 data pages, then the length of each data page is 2K bytes. Suppose the sum of the length of the data header and the length of the first part of the valid data is equal to 2K bytes, and the length of the second part of the valid data is 1K bytes, then the length of the invalid data = the length of the data page - the second part of the valid data The length of = 2K bytes - 1K bytes = 1K bytes. The controller 01 generates invalid data of 1K bytes, and combines the data header, the first part of the valid data, the second part of the valid data and the invalid data into a data packet E (such as the data packet E in Figure 2), the data packet E The length of 4K bytes needs to occupy two data pages of 2K bytes. Finally, the controller 01 uses data page i and data page i+1 in the data block of the backup sub-area of the flash memory 03 (such as data page i and data page i+1 in FIG. 2 ) to store the data packet E.

Please combine FIG. 1 and FIG. 2 to briefly introduce the second working scenario of the terminal 00, that is, the initialization process of the terminal 00.

When the terminal is turned off, all the valid data stored in the analog storage area of the memory 02 will be lost, but the valid data stored in the data page of the data block in the backup sub-area of the flash memory 03 will be preserved. After the terminal restarts, in order to ensure that the controller 01 can quickly read valid data, the controller 01 will extract the data packets stored in the data page of the data block in the backup sub-area of the flash memory 03, and store them in the memory 02 Apply for a temporary storage area, and store all the extracted data packets in the temporary storage area of memory 02; then, controller 01 stores the valid data of all data packets in the temporary storage area of memory 02 to the analog storage of memory 02 In the region, the offset address of valid data is stored in the data header of each data packet, and the valid data of each data packet is stored in the analog storage area of memory 02 according to the offset address in the data header; finally , the controller 01 will release the temporary storage area of the memory 02.

Please combine FIG. 1 and FIG. 2 to briefly introduce the third working scenario of the terminal 00, that is, the process of reading valid data of the terminal 00.

When the terminal 00 is turned on, if the controller 01 needs to read certain valid data in the analog storage area of the memory 02, then the controller 01 needs to read the valid data in the analog storage area of the memory 02 based on the offset address of the valid data. Get the valid data.

Please refer to FIG. 3 , which is a flowchart of a data storage method provided by an embodiment of the present application. The method shown in FIG. 3 can be applied to the terminal shown in FIG. 1 , and the method shown in FIG. 3 can make the terminal meet the service life requirement in the process of simulating the EEPROM. The method includes the following steps.

Step S11, the terminal receives valid data to be stored.

Wherein, the valid data to be stored refers to the data that needs to be stored and is sent from the external device to the terminal.

For example, assuming that the terminal is a set-top box and the external device is a remote controller, when the user operates a button on the remote controller, the remote controller will generate a control instruction based on the button pressed by the user, and send the control instruction to the set-top box. When the set-top box receives the control command sent by the remote controller, the set-top box will extract valid data to be stored in the control command, and store the valid data in the flash memory of the terminal.

Step S12, the terminal configures the data header according to the preset parameters and the valid data, and the data header is used to indicate the attribute of the valid data.

Among them, the preset parameters are parameters pre-configured by the terminal, and the preset parameters may include labels, verification identifiers, verification results, encryption identifiers, encryption keys, compression identifiers, offset addresses of valid data, and lengths of invalid data, etc. parameter.

After the terminal configures the data header according to the preset parameters and valid data, the data header has the values of the preset parameters and information related to the valid data.

Tabs are pre-configured content for the terminal. If the preset parameters include a tag, the terminal only needs to store the tag in the data header.

For example, assuming that the pre-configured label of the terminal is "0x12345678", then the terminal will store the label "0x12345678" in the data header during the process of configuring the data header according to the preset parameters and valid data.

The verification identifier is the content pre-configured by the terminal, and the verification result is the verification result obtained by calculating the valid data based on the verification algorithm corresponding to the verification identifier. If the preset parameters include the verification identifier and the verification result, the terminal needs to store the verification identifier in the data header, and then calculate the verification result based on the verification algorithm corresponding to the verification identifier for the valid data, and Store the test result in the data header.

For example, assuming that the pre-configured verification flag of the terminal is "1" and the valid data is "A", then the terminal will store the verification flag "1" in the data header during the process of configuring the data header according to the preset parameters and valid data. , then the terminal calculates the verification result "B" obtained by calculating the valid data "A" based on the verification algorithm "Cyclic Redundancy Check (CRC)" corresponding to the verification identifier "1", and checks The result "B" is stored in the data header.

The encryption ID and the encryption key are pre-configured contents of the terminal. If the preset parameters include an encryption ID and encryption key, the terminal needs to store the encryption ID and encryption key in the data header, and then encrypt the valid data based on the encryption algorithm and encryption key corresponding to the encryption ID. result. The encryption result can be used to replace the real valid data to improve the security of the valid data.

For example, assuming that the pre-configured encryption ID of the terminal is "2", the encryption key is "C", and the valid data is "A", the terminal needs to store the encryption ID "2" and the encryption key "C" in the data header , and then based on the encryption algorithm "Advanced Encryption Standard (AES)" corresponding to the encryption identifier "2" and the encryption key "C", the encryption result "D" obtained by encrypting the valid data "A" is obtained. The encryption result "D" can be used to replace the real valid data "A" to improve the security of the valid data.

The compressed flag is pre-configured content for the terminal. If the preset parameter contains a compression identifier, the terminal needs to store the compression identifier in the data header, and then compress the valid data based on the compression algorithm corresponding to the compression identifier to obtain a compression result. The compressed result can be used to replace real valid data, so as to save the storage space of the flash memory of the terminal.

For example, assuming that the pre-configured compression identifier of the terminal is "1" and the valid data is "A", the terminal needs to store the compression identifier "1" in the data header, and then based on the compression algorithm "gzip" corresponding to the compression identifier "1", Compression result "E" obtained by compressing valid data "A". The compression result "E" can be used to replace the real effective data "A", so as to save the storage space of the flash memory of the terminal.

The offset address of valid data is the offset address allocated by the terminal. If the preset parameter contains the offset address of the valid data, the terminal needs to store the offset address of the valid data in the data header.

The length of the invalid data is calculated by the terminal according to the length of the data header, the length of the valid data and the length of the data page to be written. Among them, it is first necessary to calculate the sum of the length of the data header and the length of the valid data to obtain the initial data length, and then calculate the difference between the length of the data page to be written and the length of the initial data to obtain the length of the invalid data, so that the terminal can be guaranteed to The length of the data packet generated by the data header, valid data and invalid data is equal to the length of the data page to be written.

Step S13, the terminal generates a data packet according to the data header, valid data and invalid data.

Wherein, the invalid data is used to fill the data packet so that the length of the data packet is the same as the length of the data page to be written, and the data page to be written is a data page of a data block in the backup area of the flash memory.

After the terminal receives the valid data to be stored and configures the data header, if the terminal calculates that the sum of the length of the valid data and the length of the data header is less than the length of one data page, then the The length of the data packet should be equal to the length of a data page.

If the terminal calculates that the sum of the length of the valid data and the length of the data header is greater than the length of one data page and less than the length of two data pages, then the length of the data packet generated by the terminal based on the data header, valid data and invalid data must be equal to two The length of data pages.

If the terminal calculates that the sum of the length of the valid data and the length of the data header is greater than the length of two data pages and less than the length of three data pages, then the length of the data packet generated by the terminal based on the data header, valid data and invalid data must be equal to The length of three data pages, and so on, so that the length of the resulting data packet is a multiple of the length of the data page.

Since there are many ways for "the terminal to generate a data packet according to the data header, valid data, and invalid data", several ways are briefly introduced below.

In an optional manner, "the terminal generates a data packet according to the data header, valid data, and invalid data" may also include the following steps: the terminal calculates the packet according to the length of the data header, the length of the valid data, and the length of the data page to be written The length to be filled; the terminal generates invalid data according to the length to be filled; the terminal combines the data header, valid data and invalid data into a data packet. Wherein, the terminal may also write the length to be filled into the data header.

Among them, the terminal calculates the length to be filled according to the length of the data header, the length of the valid data and the length of the data page to be written, and generates invalid data according to the length to be filled, so as to ensure that the data header, valid data and invalid data are combined into data The length of the packet is the same as the length of the data page to be written.

In an optional manner, "the terminal generates a data packet according to the data header, valid data, and invalid data" may also include the following steps: the terminal obtains the verification identifier in the data header; the terminal obtains the verification algorithm according to the verification identifier Calculate the valid data to obtain the verification result; the terminal writes the verification result into the data header to obtain the target data header; the terminal calculates the length to be filled according to the length of the target data header, the length of the valid data and the length of the data page to be written ; The terminal generates invalid data according to the length to be filled; the terminal combines the target data header, valid data and invalid data into a data packet.

Wherein, the terminal stores the verification result in the target data header, so that the valid data can be verified at any time to judge the correctness of the valid data.

In an optional manner, "the terminal generates a data packet according to the data header, valid data, and invalid data" may also include the following steps: the terminal obtains the compression identifier in the data header; the terminal compresses the valid data according to the compression algorithm corresponding to the compression identifier Perform compression to obtain compressed data; the terminal calculates the length to be filled according to the length of the data header, the length of the compressed data, and the length of the data page to be written; the terminal generates invalid data according to the length to be filled; the terminal combines the data header, compressed data and invalid data into packets.

Wherein, since the storage space occupied by the compressed data is smaller than that of the valid data, the terminal combines the data header, the compressed data and the invalid data into a data packet, which can save the storage space of the flash memory of the terminal.

In an optional manner, "the terminal generates a data packet according to the data header, valid data, and invalid data" may also include the following steps: the terminal acquires the encryption identifier in the data header; the terminal encrypts the valid data according to the encryption algorithm corresponding to the encryption identifier Encrypt to obtain encrypted data; the terminal calculates the length to be filled according to the length of the data header, the length of the encrypted data, and the length of the data page to be written; the terminal generates invalid data according to the length to be filled; the terminal combines the data header, encrypted data and invalid data into packets.

Wherein, since the encrypted data has higher security than the valid data, the terminal combines the data header, the encrypted data and the invalid data into a data packet, which can improve the security of the valid data.

In an optional manner, "the terminal generates a data packet according to the data header, valid data, and invalid data" may also include the following steps: the terminal obtains the compression identifier, encryption identifier, and verification identifier in the data header; The corresponding compression algorithm compresses the valid data to obtain compressed data; the terminal encrypts the compressed data according to the encryption algorithm corresponding to the encryption identifier to obtain encrypted data; the terminal calculates the encrypted data according to the verification algorithm corresponding to the verification identifier to obtain the verification result; The terminal writes the verification result into the data header to obtain the target data header; the terminal calculates the length to be filled according to the length of the target data header, the length of the encrypted data, and the length of the data page to be written; the terminal generates invalid data according to the length to be filled; The terminal combines the target data header, encrypted data, and invalid data into a data packet.

Wherein, the terminal compresses the valid data to obtain the compressed data, and then encrypts the compressed data to obtain the encrypted data, which not only saves the storage space of the flash memory of the terminal, but also improves the security of the valid data. In addition, the terminal calculates the encrypted data based on the verification algorithm corresponding to the verification identifier to obtain the verification result, and stores the verification result in the target data header, so that the valid data can be verified at any time to determine the validity of the valid data. sex.

Step S14, the terminal stores the data packet in the data page to be written.

In the embodiment shown in Figure 3, in the process of generating a data packet according to the data header, valid data and invalid data, the terminal needs to ensure that the length of the data packet is the same as the length of the data page to be written, so that the data packet and the data There is a corresponding relationship between pages. After storing multiple data packets in the data block of the backup sub-area of the flash memory, the terminal can quickly read each data packet in the data block of the backup sub-area of the flash memory based on the correspondence between data packets and data pages. Therefore, the solution provided by the embodiment of the present application can enable each data block to store multiple data packets after being erased once, thereby greatly increasing the number of write times of each data block, and then satisfying the requirements for use in the process of simulating EEPROM. life expectancy requirements.

In addition, after step S11, the embodiment shown in FIG. 3 may further include the following steps: the terminal obtains the offset address of the valid data; the terminal stores the valid data in the storage space corresponding to the offset address in the simulated storage area of the internal memory. Wherein, in order to ensure that the terminal can quickly read the valid data, the terminal will store the valid data in the storage space corresponding to the offset address in the simulated storage area of the memory.

Please refer to FIG. 4 , which is a flowchart of another data storage method provided by the embodiment of the present application. The method shown in FIG. 4 can be applied to the terminal shown in FIG. 1 , and the method shown in FIG. 4 can make the terminal meet the service life requirement in the process of simulating the EEPROM. The method includes the following steps.

Step S21, the terminal receives valid data to be stored.

Step S22, the terminal configures the data header according to the preset parameters and the valid data, and the data header is used to indicate the attribute of the valid data.

Step S23, the terminal generates a data packet according to the data header, valid data and invalid data.

Step S24, the terminal stores the data packet in the data page to be written.

Step S25, when the terminal is initialized, the terminal acquires N data packets stored in the data page of each data block in the backup area of the flash memory.

Wherein, the backup area of the flash memory includes at least two backup sub-areas, each backup sub-area in the at least two backup sub-areas includes at least two data blocks, and each data block in the at least two data blocks includes at least two data pages, N greater than or equal to 1. Terminal initialization refers to the state when the terminal is turned on.

When the terminal is turned off, all the valid data stored in the analog storage area of the memory will be lost, but the valid data stored in the data page of the data block in the backup sub-area of the flash memory will be preserved. When the terminal is initialized, in order to ensure that the terminal can quickly read valid data, the terminal will extract the data packets stored in the data page of the data block in the backup area of the flash memory, and store the effective data of the extracted data packets to the simulated storage area of memory.

Step S26, the terminal stores the valid data of the N data packets in the analog storage area of the internal memory.

In the embodiment shown in Fig. 4, each data block can store a plurality of data packets after erasing once, thereby greatly improving the write times of each data block; and, the backup area of the flash memory includes at least two backup sub-areas, and each backup sub-area in at least two backup sub-areas includes at least two data blocks, so the embodiment of the present application has more data blocks for storing data packets, even if some data blocks are damaged It will not affect the process of simulating the EEPROM, so that the service life requirement in the process of simulating the EEPROM can be better met.

Please refer to FIG. 5 , which is a flow chart of an embodiment refined based on step S26 in FIG. 4 provided by the embodiment of the present application. Wherein, "the terminal stores the valid data of N data packets in the analog storage area of the memory" in step S26 of FIG. 4 may also include the following steps.

Step S31, the terminal applies for a temporary storage area in the internal memory.

Step S32, the terminal stores the N data packets in the temporary storage area of the internal memory.

Step S33, the terminal stores the valid data of the N data packets in the temporary storage area of the internal memory in the analog storage area of the internal memory.

Step S34, the terminal releases the temporary storage area of the internal memory.

In the embodiment shown in Figure 5, in order to quickly store the N data packets stored in the data page of each data block in the backup area of the flash memory into the simulated storage area of the memory, it is necessary to save the backup area of the flash memory at one time. Store the N data packets stored in the data page of each data block in the temporary storage area of the memory, and then store the valid data in the N data packets from the temporary storage area of the memory to the analog storage area of the memory Therefore, the embodiment of the present application can more quickly store the valid data of N data packets in the flash memory to the simulated storage area of the memory. Moreover, the temporary storage area of the internal memory is a storage area temporarily applied for in the internal memory. After the temporary storage area is used up, the temporary storage area of the internal memory needs to be released, thereby saving system resources of the terminal.

Since there are many ways that "the terminal stores the valid data of N data packets in the temporary storage area of the memory in the simulated storage area of the memory", several ways are briefly introduced below.

In an optional manner, "the terminal stores the valid data of N data packets in the temporary storage area of the memory in the simulated storage area of the memory" may also include the following steps:

Step A1, the terminal selects a target data packet in the N data packets in the temporary storage area of the memory;

Step A2, the terminal extracts the target data of the target data packet;

Step A3, the terminal extracts the offset address in the data header of the target data packet;

Step A4, the terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

Step A5, when the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute step A2;

Step A6. When the target data packet is the last data packet in the N data packets, continue to execute step S34.

Wherein, after the terminal stores N data packets in the temporary storage area of the memory, the terminal needs to store the target data of each data packet in the within the simulated storage area of memory.

In addition, the target data packet mentioned in step A1 to step A6 refers to a data packet in N data packets, and the target data of the target data packet refers to valid data in the target data packet.

In an optional manner, "the terminal stores the valid data of N data packets in the temporary storage area of the memory in the simulated storage area of the memory" may also include the following steps:

Step B1, the terminal selects a target data packet in the N data packets in the temporary storage area of the memory;

Step B2, the terminal extracts the target data of the target data packet;

Step B3, the terminal extracts the verification identifier, the first verification result and the offset address in the data header of the target data packet;

Step B4, the terminal calculates the target data according to the verification algorithm corresponding to the verification identifier to obtain a second verification result;

Step B5, when the first verification result is the same as the second verification result, the terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

Step B6, when the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute step B2;

Step B7. When the target data packet is the last data packet in the N data packets, continue to execute step S34.

Among them, in order to verify whether the target data of the target data packet has an error during transmission, the terminal needs to extract the verification identifier and the first verification result in the data header of the target data packet, and then, the terminal performs the verification according to the corresponding verification identifier. The algorithm calculates the target data to obtain the second verification result. If the first verification result is the same as the second verification result, it means that there is no error in the transmission process of the target data. At this time, the target data can be stored in the storage space corresponding to the offset address in the analog storage area of the memory. If the first verification result is different from the second verification result, it means that the target data has an error during transmission, and the terminal cannot store the target data in the storage space corresponding to the offset address in the analog storage area of the memory.

In addition, the target data packet mentioned in step B1 to step B7 refers to a data packet in the N data packets, and the target data of the target data packet refers to valid data in the target data packet.

In an optional manner, "the terminal stores the valid data of N data packets in the temporary storage area of the memory in the simulated storage area of the memory" may also include the following steps:

Step C1, the terminal selects a target data packet in the N data packets in the temporary storage area of the memory;

Step C2, the terminal extracts the encrypted data of the target data packet;

Step C3, the terminal extracts the encryption identifier and offset address in the data header of the target data packet;

Step C4, the terminal decrypts the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain the target data;

Step C5, the terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

Step C6, when the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute step C2;

Step C7, when the target data packet is the last data packet in the N data packets, continue to execute step S34.

Among them, if the data header of the target data packet has an encryption identifier, it means that the encrypted data obtained by encrypting the target data is stored in the target data packet, so the terminal needs to decrypt the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain target data, and store the target data in the storage space corresponding to the offset address in the analog storage area of the memory, thereby ensuring the security of the target data.

In addition, the target data packet mentioned in step C1 to step C7 refers to one data packet in the N data packets, and the target data refers to valid data.

In an optional manner, "the terminal stores the valid data of N data packets in the temporary storage area of the memory in the simulated storage area of the memory" may also include the following steps:

Step D1, the terminal selects the target data packet in the N data packets in the temporary storage area of the memory;

Step D2, the terminal extracts the compressed data of the target data packet;

Step D3, the terminal extracts the compression identifier and offset address in the data header of the target data packet;

Step D4, the terminal decompresses the compressed data according to the compression algorithm corresponding to the compression identifier to obtain the target data;

Step D5, the terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

Step D6, when the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute step D2;

Step D7, when the target data packet is the last data packet in the N data packets, continue to execute step S34.

Among them, if the data header of the target data packet has a compression identifier, it means that the compressed data stored in the target data packet is the compressed data obtained after compressing the target data, so the terminal needs to decompress the compressed data according to the compression algorithm corresponding to the compression identifier. The target data is obtained, and the target data is stored in the storage space corresponding to the offset address in the simulated storage area of the memory, thereby saving the storage space of the flash memory.

In addition, the target data packet mentioned in step D1 to step D7 refers to one data packet in the N data packets, and the target data refers to valid data.

In an optional manner, "the terminal stores the valid data of N data packets in the temporary storage area of the memory in the simulated storage area of the memory" may also include the following steps:

Step E1, the terminal selects a target data packet in the N data packets in the temporary storage area of the memory;

Step E2, the terminal extracts the encrypted data of the target data packet;

Step E3, the terminal extracts the verification identifier, the first verification result, the encryption identifier, the compression identifier and the offset address in the data header of the target data packet;

Step E4, the terminal calculates the encrypted data according to the verification algorithm corresponding to the verification identifier to obtain a second verification result;

Step E5, when the first verification result is the same as the second verification result, the terminal decrypts the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain the compressed data;

Step E6, the terminal decrypts the compressed data according to the compression algorithm corresponding to the compression identifier to obtain the target data;

Step E7, the terminal stores the target data in the storage space corresponding to the offset address in the simulated storage area of the memory;

Step E8, when the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute step E2;

Step E9, when the target data packet is the last data packet in the N data packets, continue to execute step S34.

Wherein, if the data header of the target data packet has a compression identifier, an encryption identifier, a verification identifier, and a first verification result, it means that the target data packet stores compressed data obtained after compressing the target data, and the compressed data The encrypted data obtained after encryption can also verify whether an error occurs in the encrypted data of the target data packet during transmission. After the terminal extracts the encrypted data of the target data packet, the terminal needs to verify whether the first verification result is the same as the second verification result. If yes, it means that no error occurred in the target data during transmission; then, the terminal needs to The encryption algorithm corresponding to the logo decrypts the encrypted data to obtain the compressed data, and then decrypts the compressed data according to the compression algorithm corresponding to the compression logo to obtain the target data, and finally stores the target data in the analog storage area of the memory corresponding to the offset address In the storage space, not only the storage space of the flash memory is saved, but also the security of valid data is improved. In addition, it is also possible to verify whether the encrypted data of the target data packet has errors during transmission.

In addition, the target data packet mentioned in step E1 to step E9 refers to one data packet in the N data packets, and the target data refers to valid data.

Please refer to FIG. 6 , which is a schematic diagram of a data storage device provided by an embodiment of the present application. The data transmission device includes the following modules:

A receiving module 11, configured to receive valid data to be stored;

The configuration module 12 is configured to configure the data header according to preset parameters and valid data, and the data header is used to indicate the attributes of the valid data;

Generating module 13, is used for generating data packet according to header, valid data and invalid data, and invalid data is used for filling data packet so that the length of data packet is identical with the length of data page to be written, and the data page to be written is flash memory Data pages of data blocks in the backup area;

The storage module 14 is configured to store the data packet in the data page to be written.

Optionally, the generation module 13 is specifically used to calculate the length to be filled according to the length of the data header, the length of the valid data, and the length of the data page to be written; the terminal generates invalid data according to the length to be filled; the terminal generates the data header, valid data and invalid data into a data packet.

Optionally, the generation module 13 is specifically used to obtain the compression identification, encryption identification and verification identification in the data header; compress the valid data according to the compression algorithm corresponding to the compression identification to obtain compressed data; according to the encryption algorithm corresponding to the encryption identification Encrypt the compressed data to obtain the encrypted data; calculate the encrypted data according to the verification algorithm corresponding to the verification identification to obtain the verification result; write the verification result into the data header to obtain the target data header; according to the length of the target data header, encrypt The length of the data and the length of the data page to be written calculate the length to be filled; generate invalid data according to the length to be filled; combine the target data header, encrypted data and invalid data into a data packet.

Optionally, the data storage device may also include:

The first obtaining module is used to obtain the offset address of the valid data;

The second storage module is used to store valid data in the storage space corresponding to the offset address in the simulated storage area of the internal memory.

Optionally, the data storage device may also include:

The second obtaining module is used to obtain N data packets stored in the data page of each data block in the backup area of the flash memory when the terminal is initialized. The backup area of the flash memory includes at least two backup sub-areas, and at least two backup sub-areas Each backup sub-area in the area includes at least two data blocks, each of the at least two data blocks includes at least two data pages, and N is greater than or equal to 1;

The third storage module is used to store the valid data of the N data packets in the analog storage area of the internal memory.

Optionally, the third storage module is specifically used to apply for a temporary storage area in the memory; store N data packets in the temporary storage area of the memory; store the effective data of the N data packets in the temporary storage area of the memory to the simulated storage area of memory; to release the temporary storage area of memory.

Optionally, the third storage module is specifically used to select the target data packet in the N data packets in the temporary storage area of the memory; extract the encrypted data of the target data packet; extract the check mark in the data header of the target data packet , the first verification result, the encrypted identification, the compression identification and the offset address; the encrypted data is calculated according to the verification algorithm corresponding to the verification identification to obtain the second verification result; the first verification result and the second verification result At the same time, decrypt the encrypted data according to the encryption algorithm corresponding to the encryption identifier to obtain the compressed data; decrypt the compressed data according to the compression algorithm corresponding to the compression identifier to obtain the target data; store the target data to the offset in the simulated storage area of the memory In the storage space corresponding to the address; when the target data packet is not the last data packet in the N data packets, the terminal determines that the next data packet of the target data packet is the target data packet, and continues to execute the terminal to extract the target data of the target data packet ; When the target data packet is the last data packet in the N data packets, continue to execute the terminal to release the temporary storage area of the memory.

FIG. 7 is a schematic diagram of another data storage device provided by the embodiment of the present application. 7, the device includes a processor 21, a memory 22 and a transceiver 23, wherein the processor 21, the memory 22 and the transceiver 23 communicate with each other through an internal connection path, the memory 22 is used for storing instructions, and the processor 21 is used for executing The instructions stored in the memory 22 are used to control the transceiver 23 to receive signals and to control the transceiver 23 to send signals, and when the processor 21 executes the instructions stored in the memory 22, the device causes the processor 21 to execute the above-mentioned FIG. 3 and FIG. 4 and the method shown in Figure 5.

An embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, it causes the computer to execute the methods shown in FIG. 3 , FIG. 4 and FIG. 5 .

An embodiment of the present application provides a computer program product including instructions, which, when run on a computer, cause the computer to execute the methods shown in FIG. 3 , FIG. 4 and FIG. 5 .

An embodiment of the present application provides a chip, the chip includes a processor and/or program instructions, and when the chip is running, implements the above methods shown in FIG. 3 , FIG. 4 and FIG. 5 .

In addition, the flash memory mentioned in the embodiment of the present application may specifically be storage media such as Nand Flash (and non-flash memory), Nor Flash (or non-flash memory), or EMMC (Embedded Multi Media Card, embedded multimedia card). Of course, in the embodiment of the present application, the flash memory in the terminal is only an implementation, and other storage media can also be used instead, for example, SSD (Solid State Drives, solid state disk) or HDD (Hard Disk Drive, Hard disk drive) and other storage media instead of flash memory.

Therefore, the storage medium used in the embodiment of the present application includes but is not limited to Nand Flash, Nor Flash, EMMC, SSD, HDD, etc., and other types of storage media can also be used.

It should be noted that the embodiments provided in the present application are only optional embodiments introduced in the present application, and those skilled in the art can design more embodiments on this basis, so details are not repeated here.

Those of ordinary skill in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions are realized in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods in various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.

The above is only the specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the application, and should cover Within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (13)

1. A method of data storage, the method comprising:

the terminal receives effective data to be stored;

the terminal configures a data head according to preset parameters and the effective data, wherein the data head is used for indicating the attribute of the effective data;

the terminal generates a data packet according to the data head, the effective data and the invalid data, wherein the invalid data is used for filling the data packet so that the length of the data packet is the same as the length of a data page to be written, and the data page to be written is a data page of a data block in a backup area of the flash memory;

the terminal stores the data packet into the data page to be written;

when the terminal is initialized, the terminal acquires N data packets stored in data pages of each data block in a backup area of the flash memory, wherein the backup area of the flash memory comprises at least two backup subareas, each backup subarea in the at least two backup subareas comprises at least two data blocks, each data block in the at least two data blocks comprises at least two data pages, and N is greater than or equal to 1;

and the terminal stores the effective data of the N data packets into an analog storage area of the memory.

2. The data storage method according to claim 1, wherein the terminal generates a data packet from the data header, the valid data, and the invalid data, comprising:

the terminal calculates the length to be filled according to the length of the data head, the length of the effective data and the length of a data page to be written;

the terminal generates invalid data according to the length to be filled;

and the terminal combines the data head, the valid data and the invalid data into a data packet.

3. The data storage method according to claim 1, wherein the terminal generates a data packet from the data header, the valid data, and the invalid data, comprising:

the terminal acquires a compression identifier, an encryption identifier and a verification identifier in the data head;

the terminal compresses the effective data according to a compression algorithm corresponding to the compression identifier to obtain compressed data;

the terminal encrypts the compressed data according to an encryption algorithm corresponding to the encryption identifier to obtain encrypted data;

the terminal calculates the encrypted data according to a verification algorithm corresponding to the verification mark to obtain a verification result;

The terminal writes the verification result into the data head to obtain a target data head;

the terminal calculates the length to be filled according to the length of the target data head, the length of the encrypted data and the length of the data page to be written;

the terminal generates invalid data according to the length to be filled;

and the terminal combines the target data head, the encrypted data and the invalid data into a data packet.

4. The data storage method according to claim 1, wherein after the terminal receives the valid data to be stored, the method further comprises:

the terminal acquires the offset address of the effective data;

and the terminal stores the effective data into a storage space corresponding to the offset address in an analog storage area of the memory.

5. The data storage method according to claim 1, wherein the terminal stores the valid data of the N data packets into the analog storage area of the memory, including:

the terminal applies for a temporary storage area in the memory;

the terminal stores the N data packets into a temporary storage area of the memory;

the terminal stores the effective data of the N data packets into an analog storage area of the memory in a temporary storage area of the memory;

And the terminal releases the temporary storage area of the memory.

6. The data storage method according to claim 5, wherein the terminal stores the valid data of the N data packets in the temporary storage area of the memory into the analog storage area of the memory, including:

the terminal selects a target data packet in the N data packets in a temporary storage area of the memory;

the terminal extracts the encrypted data of the target data packet;

the terminal extracts a check identifier, a first check result, an encryption identifier, a compression identifier and an offset address in a data head of the target data packet;

the terminal calculates the encrypted data according to a verification algorithm corresponding to the verification mark to obtain a second verification result;

when the first check result and the second check result are the same, the terminal decrypts the encrypted data according to an encryption algorithm corresponding to the encryption identifier to obtain compressed data;

the terminal decrypts the compressed data according to a compression algorithm corresponding to the compression identifier to obtain target data;

the terminal stores the target data into a storage space corresponding to the offset address in an analog storage area of the memory;

When the target data packet is not the last data packet in the N data packets, the terminal determines the next data packet of the target data packet as the target data packet, and continues to execute the step of extracting the target data of the target data packet by the terminal;

and when the target data packet is the last data packet in the N data packets, continuing to execute the step of releasing the temporary storage area of the memory by the terminal.

7. A data storage device, the device comprising:

the receiving module is used for receiving the effective data to be stored;

the configuration module is used for configuring a data head according to preset parameters and the effective data, wherein the data head is used for indicating the attribute of the effective data;

the generating module is used for generating a data packet according to the data head, the effective data and the invalid data, wherein the invalid data is used for filling the data packet so that the length of the data packet is the same as the length of a data page to be written, and the data page to be written is a data page of a data block in a backup area of the flash memory;

the storage module is used for storing the data packet into the data page to be written;

a second obtaining module, configured to obtain, when the device is initialized, N data packets stored in data pages of each data block in a backup area of the flash memory, where the backup area of the flash memory includes at least two backup sub-areas, each backup sub-area of the at least two backup sub-areas includes at least two data blocks, each data block of the at least two data blocks includes at least two data pages, and N is greater than or equal to 1;

And the third storage module is used for storing the effective data of the N data packets into the analog storage area of the memory.

8. The data storage device of claim 7, wherein:

the generating module is specifically configured to calculate a length to be filled according to the length of the data header, the length of the effective data, and the length of a data page to be written; generating invalid data according to the length to be filled; and combining the data head, the valid data and the invalid data into a data packet.

9. The data storage device of claim 7, wherein:

the generation module is specifically used for acquiring a compression identifier, an encryption identifier and a verification identifier in the data head; compressing the effective data according to a compression algorithm corresponding to the compression identifier to obtain compressed data; encrypting the compressed data according to an encryption algorithm corresponding to the encryption identifier to obtain encrypted data; calculating the encrypted data according to a verification algorithm corresponding to the verification mark to obtain a verification result; writing the verification result into the data head to obtain a target data head; calculating the length to be filled according to the length of the target data head, the length of the encrypted data and the length of a data page to be written; generating invalid data according to the length to be filled; and combining the target data head, the encrypted data and the invalid data into a data packet.

10. The data storage device of claim 7, wherein the device further comprises:

the first acquisition module is used for acquiring the offset address of the effective data;

and the second storage module is used for storing the effective data into a storage space corresponding to the offset address in an analog storage area of the memory.

11. The data storage device of claim 7, wherein:

the third storage module is specifically configured to apply for a temporary storage area in the memory; storing the N data packets into a temporary storage area of the memory; storing the effective data of the N data packets into an analog storage area of the memory in a temporary storage area of the memory; and releasing the temporary storage area of the memory.

12. The data storage device of claim 11, wherein:

the third storage module is specifically configured to select, in the temporary storage area of the memory, a target data packet in the N data packets; extracting the encrypted data of the target data packet; extracting a check identifier, a first check result, an encryption identifier, a compression identifier and an offset address in a data head of the target data packet; calculating the encrypted data according to a verification algorithm corresponding to the verification mark to obtain a second verification result; when the first check result is the same as the second check result, decrypting the encrypted data according to an encryption algorithm corresponding to the encryption identifier to obtain compressed data; decrypting the compressed data according to a compression algorithm corresponding to the compression identifier to obtain target data; storing the target data into a storage space corresponding to the offset address in an analog storage area of the memory; when the target data packet is not the last data packet in the N data packets, determining the next data packet of the target data packet as a target data packet, and continuously executing the extraction of the target data packet; and when the target data packet is the last data packet in the N data packets, continuing to execute the temporary storage area for releasing the memory.

13. A data storage device comprising a transceiver, a processor, and a memory;

wherein the transceiver, the memory, and the processor communicate with each other through an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and control the transceiver to transmit signals, and when the processor executes the instructions stored by the memory, the apparatus causes the processor to execute the data storage method of any one of the above claims 1 to 6.