METHOD FOR WRITING A FILE BY DIFFERENT WRITING SCHEMES ACCORDING TO FILE CHARACTERISTICS AND ELECTRONIC DEVICE USING THE METHOD

• US 20080082723A1
• Filed: 05/21/2007
• Published: 04/03/2008
• Est. Priority Date: 10/02/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Kyung-sik
• Granted Patent: US 7,984,249 B2
• Time in Patent Office: Days
• US Class Current: 711/100
• CPC Class Codes: G11C 16/349 Arrangements for evaluating degradation, retention or wearout, e.g. by counting erase cycles

Abstract

A method for writing a file by different writing schemes according to file characteristic and electronic device using the method are provided. A method for writing a file is provided, including writing a first file to a memory according to a first writing scheme if the file to be written to the memory is the first file, and writing a second file to the memory according to a second writing scheme which is different from the first writing scheme if the file to be written to the memory is the second file different from the first file.

Claims

1. A method for writing a file, the method comprising:

writing a first file to a memory according to a first writing scheme if the file to be written to the memory is the first file; and

writing a second file to the memory according to a second writing scheme which is different from the first writing scheme if the file to be written to the memory is different from the first file.

2. The method of claim 1, wherein the first file is not deleted from the memory if power to the memory is transited to an off position, and

the second file is deleted from the memory if power to the memory is transited to the off position.

3. The method of claim 2, wherein the first file comprises an image requested to be recorded, and

the second file comprises an image to provide a time shift function.

4. The method of claim 1, wherein the first writing scheme intermittently updates already-written file information regarding the first file, and

the second writing scheme does not update already-written file information regarding the second file.

5. The method of claim 4, wherein the file information comprises metadata.

6. The method of claim 1, wherein the first writing scheme writes the file information regarding the first file if the first file has been written, and

the second writing scheme does not write the file information regarding the second file, if the second file has been written.

7. The method of claim 1, wherein the memory comprises one of a flash memory and a NAND flash memory.

8. An electronic device comprising:

a memory to which a file is written; and

a controller which writes a first file to the memory according to a first writing scheme if the file to be written to the memory is the first file, and writes a second file to the memory according to a second writing scheme which is different from the first writing scheme if the file to be written to the memory is different from the first file.

9. The electronic device of claim 8, wherein the first file is not deleted from the memory if power to the memory is transited to an off position, and

the second file is deleted from the memory if power to the memory is transited to the off position.

10. The electronic device of claim 9, wherein the first file comprises an image requested to be recorded, and

the second file comprises an image to provide a time shift function.

11. The electronic device of claim 8, wherein the first writing scheme periodically updates file information, which has been already written, regarding the first file, and

the second writing scheme does not update file information, which has been already written, regarding the second file.

12. The electronic device of claim 11, wherein the file information comprises metadata.

13. The electronic device of claim 8, wherein the first writing scheme writes file information regarding the first file, if the first file has been written, and

the second writing scheme does not write file information regarding the second file, if the second file has been written.

14. The electronic device of claim 8, wherein the memory comprises one of a flash memory and a NAND flash memory.

15. A method for writing a file, the method comprising:

writing file information regarding the file to be written to a memory; and

writing the file without updating the file information.

16. The method of claim 15, wherein the file is deleted from the memory if the power to the memory is transited to an off position.

17. The method of claim 15, wherein the file information comprises metadata.

18. An electronic device comprising:

a memory to which a file is written; and

a controller which writes file information regarding the file to be written to the memory and then writes the file without updating the file information.

19. The electronic device of claim 18, wherein the file is deleted from the memory if the power to the memory is transited to an off position.

20. The electronic device of claim 18, wherein the file information comprises metadata.