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

1. A control method for a storage device of a driving recorder, comprising:

planning a directory entry of the storage device according to a predetermined directory entry stored in a storage unit;

planning a file allocation table (FAT) of the storage device according to a predetermined FAT stored in the storage unit; and

controlling a controller to write data to the storage device according to the directory entry and the FAT,

wherein entries in the FAT correspond to respective predetermined clusters in the storage device and wherein each entry in the FAT remains unchanged after new data is written to the respective predetermined clusters in the storage device.

2. The control method according to claim 1 , wherein the step of planning the directory entry of the storage device comprises:

planning in the directory entry a file name corresponding to a file.

3. The control method according to claim 2 , wherein the step of planning the directory entry of the storage device comprises:

planning in the directory entry a starting data cluster corresponding to the file.

4. The control method according to claim 3 , wherein the step of planning the FAT of the storage device comprises:

planning in the FAT a FAT chain corresponding to the file.

5. The control method according to claim 4 , wherein the step of controlling the controller to write data to the storage device according to the directory entry and the FAT comprises:

updating in the file directory the file name corresponding to the file; and

controlling the controller to write data to the data cluster in the storage device planned for the file.

6. The control method according to claim 5 , wherein in the directory entry the starting data cluster corresponding to the file stays unchanged.

7. The control method according to claim 6 , wherein in the FAT the FAT chain corresponding to the file stays unchanged.

8. A storage device control system, comprising:

a storage unit, storing a predetermined directory entry and a predetermined file allocation table (FAT);

a controller, writing data to a storage device; and

a processor, performing steps of:

planning a directory entry of the storage device according to the predetermined directory entry;

planning an FAT of the storage device according to the predetermined FAT; and

controlling the controller to write data to the storage device according to the directory entry and the FAT,

wherein entries in the FAT correspond to respective predetermined clusters in the storage device and wherein each entry in the FAT remains unchanged after new data is written to the respective predetermined clusters in the storage device.

9. The storage device control system according to claim 8 , wherein the step of planning the directory entry of the storage device comprises:

planning in the directory entry a file name corresponding to a file.

10. The storage device control system according to claim 9 , wherein the step of planning the directory entry of the storage device comprises:

planning in the directory entry a starting data cluster corresponding to the file.

11. The storage device control system according to claim 10 , wherein the step of planning the FAT of the storage device comprises:

planning in the FAT a FAT chain corresponding to the file.

12. The storage device control system according to claim 11 , wherein the step of controlling the controller to write data to the storage device according to the directory entry and the FAT comprises:

changing in the directory entry the file name corresponding to the file; and

controlling the controller to write data to the data cluster in the storage device planned for the file.

13. The storage device control system according to claim 12 , wherein in the directory entry the starting data cluster corresponding to the file stays unchanged.

14. The storage device control system according to claim 13 , wherein in the FAT the FAT chain corresponding to the file stays unchanged.