Electronic device having file restore function and method thereof

1. An electronic device having a recording medium including a whole region having a usable region and a backup region for storing data, the electronic device comprising:

a formatting unit for performing a backup of data recorded in the usable region of the recording medium in the backup region of the recording medium, and formatting the recording medium by initializing the usable region in which the data is recorded; and

an unformatting unit for unformatting the recording medium by restoring the backup data in the backup region to the useable;

wherein the formatting unit designates a size of the backup region using at least one of a root region, a reserved region, and a file allocation table region and performs a backup of data which is included in the usable region in the designated backup region; and

wherein the data is used for file management and is included in at least one of the root region, the reserved region, and the file allocation table region.

2. The electronic device of claim 1 , wherein the formatting unit performs the backup of the data, which is recorded in any one of a root region of the recording medium and a data region that corresponds to the root region, a reserved region, and a file allocation table (FAT) region, in the backup region.

3. The electronic device of claim 1 , wherein the formatting unit records the size of the usable region, which is a remaining region obtained by subtracting the backup region from the whole region of the recording medium, in a reserved region.

4. The electronic device of claim 1 , wherein if the size of the usable region in the recording medium is smaller than the whole region of the recording medium, the unformatting unit determines that the backup region exists, and unformats the recording medium by restoring the backup data in the backup region.

5. The electronic device of claim 1 , wherein the unformatting unit determines that the backup region does not exist if the size of the usable region in the recording medium is larger than or equal to the whole region of the recording medium.

6. The electronic device of claim 1 , further comprising:

an image capturing unit for performing photoelectric conversion of an optical image formed through a lens into an electric signal, and processing the converted electric signal to produce an image signal;

an image signal processing unit for compressing the image signal produced from the image capturing unit into an image file; and

a control unit for controlling the image signal processing unit to compress the file in a specified format and to store the compressed file in the recording medium.

7. A method of restoring a file in an electronic device having a recording medium including a whole region having a usable region and a backup region for storing data, the electronic device comprising:

designating a size of the backup region using at least one of a root region, a reserved region, and a file allocation table region;

performing a backup of a data which is included in the usable region in the designated backup region;

formatting the recording medium by initializing the usable region in which the data is recorded; and

unformatting the recording medium by restoring the backup data in the backup region to the usable region;

wherein the data is used for file management and is included in at least one of the root region, the reserved region, and the file allocation table region.

8. The method of claim 7 , wherein the step of performing a backup of data comprises performing the backup of the data, which is recorded in any one of a root region of the recording medium and a data region that corresponds to the root region, a reserved region, and a file allocation table (FAT) region, in the backup region.

9. The method of claim 7 , further comprising recording the size of a usable region, which is the remaining region obtained by subtracting the backup region from the whole region of the recording medium, in the reserved region.

10. The method of claim 7 , wherein the step of unformatting the recording medium comprises determining that the backup region exists if the size of the usable region in the recording medium is smaller than the whole region of the recording medium, and unformatting the recording medium by restoring the backup data in the backup region.

11. The method of claim 7 , further comprising determining that the backup region does not exist if the size of the usable region in the recording medium is larger than or equal to the whole region of the recording medium.

12. The method of claim 7 , further comprising:

performing photoelectric conversion of an optical image formed through a lens into an electric signal, and processing the converted electric signal to produce an image signal;

compressing the image signal into an image file; and

compressing the file in a specified format and storing the compressed file in the recording medium.

13. A computer-readable recording medium including a whole region having a usable region and a backup region for storing data recorded with a program that performs:

designating a size of the backup region using at least one of a root region, a reserved region, and a file allocation table region;

performing a backup of a data which is included in the usable region in the designated backup region;

formatting the recording medium by initializing the usable region in which the data is recorded; and

unformatting the recording medium by restoring the backup data in the backup region to the usable region;

wherein the data is used for file management and is included in at least one of the root region, the reserved region, and the file allocation table region.