TWI774451B - Controlling method of storage of driving recorder and storage controlling system - Google Patents

Abstract

A control method for a storage device of a driving recorder includes: configuring a directory entry of a storage device according to a predetermined directory entry stored in a storage unit; configuring a file allocation table of the storage device according to a predetermined file allocation table stored in the storage unit; and controlling a controller to write data to the storage device according to the directory entry and the file allocation table. In one embodiment, entries of the predetermined file allocation table are interleaved to accommodate multiple files and still support a continuous write operation.

Description

Control method of storage device of driving recorder and storage device control system

The present invention relates to a control method and a control system, and in particular, to a control method and a storage device control system of a storage device of a driving recorder.

Please refer to FIG. 1 , which is a schematic diagram of a conventional storage device 900 using the FAT file system. The storage device 900 includes a File-Allocation-Table 920 , a File-Allocation-Table 930 and a plurality of data clusters 940 . Taking the driving recorder as an example, after writing and deleting a file for many times, the data of the same file may be scattered and stored in the discontinuous data area 940 . For example, as shown in FIG. 1, the file FA is stored in the data area 940 numbered "13", "14", "15", "19", and "20".

The file directory table 930 is used to record the file name and the initial data area number stored in the storage device 900, and the file location configuration table 920 is used to record the link relationship of the data areas. For example, as shown in FIG. 1, the file directory table 930 indicates that a file FA is stored in the storage device 900, and the data of the file FA is stored in the data area 940 numbered "13". "14" is recorded in the position corresponding to the data area 940 numbered "13" in the file location configuration table 920, which indicates that the next data of the file FA is stored in the data area 940 numbered "14"; the file location configuration table 920 "15" is recorded in the position corresponding to the data area 940 numbered "14", which indicates that the following data of the file FA is stored in the data area 940 numbered "15", and so on; in the file location configuration table 920 The position corresponding to the data area 940 numbered "20" records "EOC", which indicates that the data area 940 numbered "20" is the end of the file FA (End Of Cluster-Chain, EOC).

Please refer to FIG. 2 and FIG. 3 , FIG. 2 shows a flow chart of a file writing method of a conventional driving recorder, and FIG. 3 shows an example of the storage device 900 according to the operation of FIG. 2 . For example, after starting the video recording program of the driving recorder, the file location configuration table 920 in the storage device 900 will be copied to a dynamic random access memory (DRAM) (step S901 ). ). Next, it is determined whether the storage space of the storage device 900 is sufficient according to the file location configuration table in the DRAM (step S902 ). If the storage device 900 has enough storage space, a data area will be selected as a starting data area to write data (for example, the data area numbered "16") (step S903 ), and added to the file directory table 930 A file name (eg "FB") and an initial data area number (eg "16") (step S904). Then, select another data area to write data (for example, the data area numbered "17") (step S905), and record the number of the data area (for example, "17") in the file location allocation table in the DRAM , corresponding to the position of the data area numbered “16” (step S906 ), then write data into the data area (step S907 ), and so on, until the file writing process ends. In addition, when the file location configuration table in the DRAM is updated a certain number of times (eg, three times), the file location configuration table 920 in the storage device 900 is updated according to the file location configuration table in the DRAM until the file writing process ends. After the file writing process is completed, the driving recorder will update the file location configuration table 920 in the storage device 900 again according to the file location configuration table in the DRAM.

However, an unexpected power failure caused by a car accident may cause the file to be unreadable due to the lack of a complete data link (FAT chain). For example, as shown in FIG. 3, when the data of the file FB has been written into the data area 940 numbered "29" and then encounters an unexpected power failure, because the file location allocation table 920 in the storage device 900 has not been based on the data in the DRAM The file location configuration table of the file FB is updated, so that the data link relationship of the file FB is incomplete, and the data stored in the data area numbered "22" and "29" in the file FB cannot be read. For the dash cam, it is quite a serious problem that the data in the event of a car accident cannot be read.

The present invention relates to a control method and a storage device control system for a storage device of a driving recorder, which utilizes a preset file location allocation table (Predetermined File-Allocation-Table) and a preset file directory table (Predetermined Directory Entry) ) to plan the storage device so that the files cannot be read due to unexpected power failure.

According to an embodiment of the present invention, a method for controlling a storage device of a driving recorder is provided. The control method of the storage device of the driving recorder includes the following steps: configuring a file directory table of the storage device according to a default file directory table stored in a storage unit; according to a default file stored in the storage unit a location configuration table for configuring a file location configuration table of the storage device; and controlling a controller to write data into the storage device according to the file directory table and the file location configuration table; wherein the file location configuration table The plurality of fields in the file correspond to the plurality of data areas of the storage device respectively, and each of the fields in the file location configuration table remains unchanged after a new data is written into the data areas of the corresponding storage device .

According to one aspect of the present invention, the data includes a file data from at least two files, and the file location configuration table is configured such that the two files are stored in an interleaved plurality of data areas.

According to an aspect of the present invention, the at least two files are plural image files having the same bit rate, and the step of configuring the file location configuration table of the storage device includes configuring the same number of each of the at least two files of such data areas.

According to an aspect of the present invention, the at least two files are image files having different bit rates, and the step of configuring the file location allocation table of the storage device includes assigning each of the at least two files according to the bit rates. The second file configures these data areas.

According to another embodiment of the present invention, a storage device control system is provided, including: a storage unit, a controller, and a processor. The storage unit stores a default file directory table and a default file location configuration table. The controller is used for writing data into a storage device. The processor is used for executing the following steps: configuring a file directory table of the storage device according to the default file directory table; organizing a file location configuration table of the storage device according to the default file location configuration table and controlling the controller to write the data into the storage device according to the file directory table and the file location configuration table; wherein the plurality of fields in the file location configuration table respectively correspond to the plurality of data areas of the storage device , and the fields in the file location configuration table remain unchanged after a new data is written into the data areas of the corresponding storage device.

Regarding the features, implementation and effects of this case, a preferred embodiment is described in detail as follows in conjunction with the drawings.

In view of the many problems of the storage device of the traditional driving recorder that need to be improved, a control method and a storage device control system of the storage device of the driving recorder are provided below, which utilizes a predetermined file directory table (Predetermined Directory Entry) and a predetermined directory entry. Set up a file location allocation table (Predetermined File-Allocation-Table) to configure the file location allocation table and file directory table of the storage device to prevent files from being unreadable due to unexpected power failure.

FIG. 4 is a block diagram of a control system 100 according to an embodiment of the present invention. The control system 100 is, for example, a control chip. In this embodiment, the control system 100 is connected to a camera 200 and a storage device 400 . The control system 100 and the camera 200 can be installed in, for example, a driving recorder. The storage device 400 is, for example, an SD memory card or a hard disk, which can be built-in or externally connected to the driving recorder. The control system 100 includes a storage unit 110 , a controller 120 , and a processor 130 . The storage unit 110 is used for storing a default file directory table and a default file location configuration table. The controller 120 is used for writing data into the storage device 400 . The processor 130 is used for configuring a file directory table and a file location configuration table of the storage device 400 .

FIG. 5 is a flow chart of one embodiment of the control method of the storage device of the driving recorder of the present invention. In this embodiment, every time the driving recorder is activated or every time the storage device 400 is replaced, the processor 130 checks whether there is a file directory table and a file location configuration table in the storage device 400 (step S501 ). If not, the processor 130 directly configures the file directory table and the file location configuration table in the storage unit 110 according to the default file directory table and the default file location configuration table in the storage unit 110 (step S503 ); if If yes, the processor 130 further checks whether the file directory table and the file location configuration table in the storage device 400 are the same as the default file directory table and the default file location configuration table in the storage unit 110 (step S502 ). If not, the processor 130 directly configures the default file directory table and the default file location configuration table in the storage unit 110 according to the default file directory table and the default file location configuration table in the storage unit 110 (step S503).

FIG. 6 is a schematic diagram of an embodiment of a storage device 400 having a configured file directory table and a file location configuration table according to the present invention. The storage device 400 includes a file location configuration table 420 configured according to a default file location configuration table, a file directory table 430 configured according to a default file directory table, and a plurality of data clusters 440 .

As shown in FIG. 6, the processor 130 configures the file name “FC” corresponding to a file in the file directory table 430, and the data area numbered “11” as the starting data area corresponding to the file FC, The processor 130 further configures the data areas numbered "11" to "15" in the file location configuration table 420 with the data link relationship corresponding to the file FC. Similarly, the processor 130 configures the file name "FD" corresponding to a file in the file directory table 430, and the starting data area of the file FD is the data area numbered "16", and the processor 130 further configures the file The data link relationship corresponding to the file FD in the location configuration table 420 is configured for the data areas numbered "16" to "20".

In short, the data of the file FC is preset in the data areas numbered "11" to "15", and the data of the file FD is preset to the data areas numbered "16" to "20". It is worth noting that although the file directory table 430 and the file location configuration table 420 have been configured, the data areas in the storage device 400 corresponding to the file FC and the file FD (that is, the data numbered "11" to "20" area), there is no data corresponding to file FC and file FD, as shown in Figure 6.

FIG. 7 is a flowchart of one embodiment of writing data to the storage device 400 according to the present invention. In this embodiment, the processor 130 controls the controller 120 to write data into the storage device 400 according to the file directory table 430 and the file location configuration table 420 .

For example, when the driving recorder starts recording, the processor 130 selects a file to write data according to the file directory table 430 (step S704 ). In one embodiment, the file names in the file directory table 430 carry time information, so the processor 130 can select the oldest file to write data according to the file names in the file directory table 430 . Taking Fig. 6 as an example, the file FC is the oldest file.

Next, the processor 130 changes the file name corresponding to the file in the file directory table 430 (step S705). Following the above example, the processor 130 changes the file name "FC" of the file in the file directory table 430 corresponding to the file selected by the processor 130 to write data to "FE", as shown in FIG. 8 . It is worth noting that, in the file directory table 430, the initial data area corresponding to the file FE remains unchanged and is still the data area numbered "11". In addition, in the file location configuration table 420, the data link relationship corresponding to the file FE remains unchanged and remains the data areas numbered "11" to "15".

Then, the processor 130 controls the controller 130 to write data into the data area configured for the file in the storage device 400 (step S706 ). Following the above example, the processor 130 controls the controller 130 to sequentially write data into the data areas numbered "11" to "15" in the storage device 400, as shown in FIG. 8 .

Next, the processor 130 determines whether to continue writing data (step S707 ). If the data continues to be written, steps S704 to S706 are repeated; if the data is not to be written, the process ends.

As can be seen from the above, the processor 130 will not update the file location configuration table 420 during writing data to the storage device 300. Specifically, when a new file is written to the storage device 300, the file directory table 430 will be updated accordingly , but the file location configuration table 420 will not be changed due to a new file being written or data of a file being updated, so even if the driving recorder is accidentally powered off, the data link corresponding to a file in the file location configuration table 420 will not be changed. The relationship can still be kept intact, and the data of the file in the storage device 300 can be read completely.

In addition, in the prior art, the processor spends time searching for an empty data area to write data. After many times of writing and deleting files, the blank data area is often fragmented, thus reducing the efficiency of file writing. Compared with the prior art, the data area of the file in the present invention has been configured and will not be changed, so the processor does not need to spend time searching for a blank data area to write data, which improves the writing performance. In one embodiment, the data area of the file can be configured to be continuous (as shown in FIG. 6 ), which can further improve the efficiency of file writing.

In addition, in the prior art, the processor needs to confirm whether the remaining space is sufficient before writing data. If it is not enough, the processor needs to delete the file name and start data area corresponding to at least one file in the file directory table, and delete the data link relationship corresponding to the at least one file in the file location configuration table, thus reducing the file writing efficiency . Compared with the prior art, the processor 110 of the present invention does not need to confirm whether the remaining space is sufficient before writing data, nor does it need to delete the file name and initial data area in the file directory table, and the data link in the file location configuration table. relationship, which can further improve the efficiency of file writing.

FIG. 9 shows a schematic diagram of one embodiment of the structure of the preconfigured continuous data area of the present invention. As previously explained in relation to FIG. 6 , when the file location configuration table is preconfigured in the form of continuous data areas, the files are sequentially stored in the data areas Index1 - IndexN as shown in FIG. 9 . That is, for example, in a secure digital (SD) card, the memory is divided into N sections, and each section has, for example, 1000 consecutive data area spaces. The files (eg, file 1 - file 3N shown in FIG. 9 ) will be sequentially written into the N segments, and the new file will overwrite the previous old file in a circular manner. The approach shown in Figure 9 is very suitable for simple applications such as recording only a single image file over a period of time. However, as the complexity of production applications increases, there will be more applications that can record, for example, two or more video (or other types of) files simultaneously.

According to the above, FIG. 10 shows a schematic diagram of one embodiment of the structure of the preconfigured continuous data area of the present invention, wherein the continuous data area supports the storage of multiple files from different applications. For example, two types of files in the form of large files and small files (such as F file 1-F file 3N and R file 1-R file 3N shown in FIG. 10 ) can be stored in the memory at substantially the same time , wherein the large file and the small file respectively correspond to, for example, a high-resolution image and a low-resolution image. In another example, a multi-camera application may also be implemented to store in memory substantially simultaneously, for example, but not limited to, image files corresponding to the front and rear cameras. Therefore, as shown in FIG. 10, in one possible example, the front camera (F) and the rear camera (R) are assigned the same number (eg, N) of segments F Index1-F IndexN and R Index1-R IndexN to Save the image file. If the recording time of each image file is, for example, one minute, the front camera image file (F File X) and the rear camera image file (R File X) can be written simultaneously within one minute.

11A and 11B are schematic diagrams showing potential defects of the file storage method of FIG. 10 . In FIG. 11A , the secure digital storage device 1110 includes a boot section 1120 , a file location allocation table 1130 , a file directory table 1140 , and a plurality of data areas 1150 , and the writing of the logical data areas 1160 and 1170 is logically depicted in FIG. 11B Enter the operation diagram. In a situation where two image files are to be stored at the same time, if conventional techniques are used to write, for example, the front camera image file (F File X) and the rear camera image file (R File X) into the secure digital storage device 1110, it is necessary to As shown in FIG. 11B, it is stored in the form of continuous data area, wherein the front camera image file (F File X) is continuously stored in the data area 1100-2099, and the rear camera image file (R File X) is continuously stored In the data area 20100-21099. In such a situation, the file location configuration table 1130 is pre-configured to store different files in the default data area.

However, when multiple files are to be simultaneously written to the secure digital storage device 1110 under such conditions, an undesired result that reduces the efficiency of sequential secure digital write operations will occur. More specifically, the secure digital write operation is performed based on the data area. Therefore, when the current camera image file (F File X) and the rear camera image file (R File X) are written to the secure digital storage device 1110 at the same time, The actual operation is that the current camera image file (F File X) is first written to several data areas, and then the system writes the rear camera image file (R File X) to several data areas. The system will continue to swap storage back and forth between the two files, as shown in Figure 11B at numbers 1-8. Therefore, the secure digital storage device 1110 will not continuously write to the next adjacent data area, but "jump" to a farther data area to write another file. Such situations would be considered "random writes" or "random jumps", resulting in less efficient secure digital write operations.

FIG. 12A shows a schematic diagram of one embodiment of a storage device having an interleaved file directory table and a file location configuration table configured according to the present invention. FIG. 12B shows a schematic diagram of one embodiment of how the present invention stores data in a plurality of data regions in an interleaved manner. In FIG. 12A, the secure digital storage device 1210 includes a boot section 1220, a file location allocation table 1230, a file directory table 1240, and a plurality of data areas 1250, and the write operation of the logical data area 1260 is logically depicted in FIG. 12B. Schematic.

In order to solve the random write problem as described in FIGS. 11A and 11B , the data area list of the related image files stored in the file location configuration table 1230 is formatted or configured in an interleaved form. Obviously, by interleaving the data regions, the random write condition can be eliminated. Such a staggered distribution method can be performed based on the distribution ratio of the bit rate of each image file in the data area.

For example, assume that the bit rate ratio of the front camera image file (F File X) and the rear camera image file (R File X) is 1:1. In such a case, the file location configuration table 1230 is formatted or configured so that each successive data area of the front camera image file (F File X) and the rear camera image file (R File X) are evenly interleaved one by one, It becomes a data area that is stored as shown in the data area 1250 and the logical data area 1260 .

Of course, the bit rate of the front camera image file (F File X) and the rear camera image file (R File X) can also be enlarged by K times, expressed as K:K (eg K=2). In this case, the data area lists of the two image files can be interleaved as shown in FIG. 13A and FIG. 13B . Since the ratio of interleaved data areas is not limited to the ratio of a single data area to a single data interval, the data area lists shown in FIGS. 13A and 13B It shows what can be considered a "changed" interleaved file directory table and file location configuration table. Therefore, FIG. 13A shows that the secure digital storage device 1310 includes a boot section 1320, a file location allocation table 1330, a file directory table 1340, and a plurality of data areas 1350, and the write operation of the logical data area 1360 is logically depicted in FIG. 13B Schematic. As shown in the figure, each of the front camera image files (F File X) and the rear camera image files (R File X) are arranged in a situation where every two data areas (K=2) are interleaved. Therefore, even if each independent file has the additional requirement of more data areas, the interleaved file location allocation table 1330 and the data area 1350 can overcome the situation of random writing.

FIG. 14A shows a schematic diagram of another embodiment of a storage device having a configured staggered file location allocation table according to the present invention. FIG. 14B shows a schematic diagram of one embodiment of how the present invention stores data in a plurality of data areas with another modified interleaving method. 14A shows that the secure digital storage device 1410 includes a boot section 1420, a file location allocation table 1430, a file directory table 1440, and a plurality of data areas 1450, and is logically depicted as a logical data area 1460 in FIG. 14B. FIG. 14A and FIG. 14B show that the bit rate ratio of the front camera image file (F File X) and the rear camera image file (R File X) is not necessarily 1:1, but can be an unequal ratio, such as 2:1 . Therefore, as shown in the file location allocation table 1430, every two data areas allocated to the front camera image file (F File X) are interleaved with one data area allocated to the rear camera image file (R File X). Data area 1450 and data area 1460 show such an exemplary configuration.

According to the above, those skilled in the art can understand that when a plurality of files are individually stored in consecutively arranged data areas, an unexpected random write situation will occur. Such a situation would degrade the performance of the secure digital write operation. The interleaving method proposed by the present invention can overcome such defects. Furthermore, according to the bit rate ratio between the image files, the list of interleaved data fields for each image file can be configured at the time of formatting. When files are recorded, the system will alternate secure digital writes between files according to the bit rate ratio. And, obviously, random secure bit writes can be avoided, allowing sequential data area writes to be performed with secure bit write performance maintained.

As described in the embodiments of Figures 4-7, in the event of an unexpected power failure, the last written data will be retrieved due to the existence of a complete data link. Moreover, when recording in a loop, the file will not be deleted, but only the file name in the file directory table (430, 1140, 1240, 1340, 1440) will be changed, thus improving the performance of file transfer. These advantages remain with the interleaving method described herein.

The interleaving method can also use the bit rate ratio between the image files to be recorded substantially simultaneously to configure the configuration of each data area. During the formatting phase, the list of data areas is planned to be staggered. When recording a file group (such as the front camera image file (F File X) and the rear camera image file (R File X)) at substantially the same time, the system will write the security digits in proportion to the number of data areas configured , which interleaves writing to different files. Such a combination can achieve continuous data area writing and maintain the performance of secure digital writing.

Finally, it should be noted that the above data area list with interleaving mechanism can be applied to not only two image files (such as the front camera image file (F File X) and the rear camera image file (R File X)), but also Can be applied to three or more interleaved image file data areas.

Although the embodiments of the present case are as described above, these embodiments are not intended to limit the present case. Those with ordinary knowledge in the technical field can make changes to the technical features of the present case according to the explicit or implicit contents of the present case. All may belong to the scope of patent protection sought in this case. In other words, the scope of patent protection in this case must be determined by the scope of the patent application in this specification.

100: Control System 110: Storage unit 120: Controller 130: Processor 200: Camera 400: Storage Device 420: File location configuration table 430: Archive Directory Table 440:Data area 900: Storage Device 920: File location configuration table 930: Archive Directory Table 940:Data area FA, FB, FC, FD, FE: File S501～S503, S704～S707, S901～S908: Steps 1110, 1210, 1310, 1410: Secure Digital Storage Devices 1120, 1220, 1320, 1420: Boot section 1130, 1230, 1330, 1430: file location configuration table 1140, 1240, 1340, 1440: file directory table 1150, 1250, 1350, 1450: Data area 1160, 1170, 1260, 1360, 1460: Logical data area F File X: Front Camera Image File R File X: Rear Camera Image File

[Fig. 1] is a schematic diagram showing a conventional storage device using the FAT file system; [Fig. 2] A flow chart showing the file writing method of the conventional driving recorder; [FIG. 3] An exemplary diagram showing the storage device according to the operation of FIG. 2; [ Fig. 4 ] shows a block diagram of a control system according to an embodiment of the present invention; [ FIG. 5 ] is a flowchart showing an embodiment of the control method of the storage device of the driving recorder of the present invention; [ Fig. 6 ] is a schematic diagram showing an embodiment of the storage device having a configured file directory table and a file location configuration table of the present invention; [FIG. 7] is a flowchart showing an embodiment of the present invention for writing data to a storage device; [FIG. 8] An example diagram showing a storage device according to the operation of FIG. 7; [FIG. 9] A schematic diagram showing an embodiment of the structure of the preconfigured continuous data area of the present invention; [FIG. 10] is a schematic diagram showing one embodiment of the structure of the preconfigured continuous data area of the present invention, wherein the continuous data area supports the storage of multiple files from different applications; [FIG. 11A] and [FIG. 11B] are schematic diagrams showing potential defects of the file storage method of [FIG. 10]; [FIG. 12A] is a schematic diagram showing one embodiment of a storage device having a configured interleaved file directory table and a file location configuration table of the present invention; [FIG. 12B] is a schematic diagram showing an embodiment of how the present invention stores data in a plurality of data areas in an interleaved method; [ FIG. 13A ] is a schematic diagram showing an embodiment of a storage device having a configured interleaved file location configuration table of the present invention; [FIG. 13B] is a schematic diagram showing an embodiment of how the present invention stores data in a plurality of data areas with a modified interleaving method; [FIG. 14A] is a schematic diagram showing another embodiment of a storage device having a configured modified staggered file location table of the present invention; and [FIG. 14B] A schematic diagram showing an embodiment of how the present invention stores data in a plurality of data areas with another modified interleaving method.

1210: Secure Digital Storage Device

1220: Boot section

1230: File location configuration table

1240: Archive directory table

1250:Data area

1260: Logical data area

F File X: Front Camera Image File

R File X: Rear Camera Image File

Claims (12)

A control method for a storage device of a driving recorder, comprising: configuring a file directory table of the storage device according to a preset file directory table stored in a storage unit; set up a file location configuration table, configure a file location configuration table of the storage device; and control a controller to write a data into the storage device according to the file directory table and the file location configuration table; wherein the file The plurality of fields in the location configuration table respectively correspond to the plurality of data areas of the storage device, and each of the fields in the file location configuration table is after a new data is written into the data areas of the corresponding storage device remain unchanged; wherein the data includes file data from at least two files, and the file location configuration table is configured such that the two files are stored in the interleaved data areas. The control method of the storage device of the driving recorder as described in the first item of the scope of the application, wherein the at least two files are image files with the same bit rate, and the file location configuration table of the storage device is organized. The step of state includes allocating the same number of the data areas to each of the at least two files. The control method of the storage device of the driving recorder as described in the first item of the scope of the application, wherein the at least two files are image files with different bit rates, and the file location configuration table of the storage device is organized The step of state includes allocating the data areas for each of the at least two files according to the bit rate. The method for controlling the storage device of the driving recorder as described in the first item of the scope of the application, wherein the step of configuring the file location configuration table of the storage device comprises: configuring a fixed proportional number of the at least two files etc. data area. The control method of the storage device of the driving recorder as described in the first item of the scope of the application, wherein the step of configuring the file directory table of the storage device comprises: a file corresponding to a file in the file directory table configure the name; and configure an initial data area corresponding to the file in the file directory table; wherein, the data corresponds to the file, and when the controller writes the data to the storage device, the file is changed The file name corresponding to the file in the directory table, and the initial data area corresponding to the file in the file directory table remains unchanged. The control method for the storage device of the driving recorder as described in item 5 of the scope of the application, wherein the step of configuring the file location configuration table of the storage device comprises: the file location configuration table corresponding to the file A data link relationship is configured; wherein the data link relationship corresponding to the file in the file location configuration table remains unchanged. A storage device control system, comprising: a storage unit for storing a preset file directory table and a preset file location configuration table; a controller for writing a data into a storage device; and a processor for to perform the following steps: According to the default file directory table, a file directory table of the storage device is configured; according to the default file location configuration table, a file location configuration table of the storage device is configured; and according to the file directory table and the file location configuration table to control the controller to write the data into the storage device; wherein the plurality of fields in the file location configuration table respectively correspond to the plurality of data areas of the storage device, and the file location configuration table Each of the fields of , remains unchanged after a new data is written into the data areas of the corresponding storage device; wherein the data includes file data from at least two files, and the file location configuration table is configured so that the two Files are stored in these data areas that are interleaved. The storage device control system as described in claim 7, wherein the at least two files are image files with the same bit rate, and the step of configuring the file location configuration table of the storage device comprises: Each of the at least two files is configured with the same number of the data areas. The storage device control system as described in claim 7, wherein the at least two files are image files with different bit rates, and the step of configuring the file location configuration table of the storage device comprises the steps of The bit rate configures the data areas for each of the at least two files. The storage device control system as described in claim 7, wherein the step of configuring the file location configuration table of the storage device comprises: configuring a fixed proportion of the data areas for the at least two files. The storage device control system as described in claim 7, wherein the step of configuring the file directory table of the storage device comprises: configuring a file name corresponding to a file in the file directory table; and configure an initial data area corresponding to the file in the file directory table; wherein, the data corresponds to the file, when the controller writes the data to the storage device, changes the file directory table corresponding to the file The file name of the file, and the starting data area corresponding to the file in the file directory table remains unchanged. The storage device control system as described in claim 11, wherein configuring the file location configuration table of the storage device comprises: grouping a data link relationship corresponding to the file in the file location configuration table state, wherein the data link relationship corresponding to the file in the file location configuration table remains unchanged.

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