System and method for accessing data from a memory device

• US 20070100893A1
• Filed: 10/31/2005
• Published: 05/03/2007
• Est. Priority Date: 10/31/2005
• Status: Abandoned Application

• Current Assignee: SigmaTel Incorporated (NXP Semiconductors NV)
• Original Assignee: SigmaTel Incorporated (NXP Semiconductors NV)
• Inventors: Sanders, Richard
• Application Number:
  US11/262,903
• Publication Number:
  US 20070100893A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0613 in relation to throughput
• CPC Class Codes: G06F 3/0643 Management of files
• CPC Class Codes: G06F 3/0661 Format or protocol conversion arrangements
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]

Abstract

The disclosure is directed to a portable device including a solid-state memory device and a processor. The solid-state memory device includes a data object including stored data and associated object-based organization data. The solid-state memory device is responsive to the processor. The processor is configured to access the solid-state memory device to retrieve the stored data from the data object and configured to communicate the stored data using a mass storage class (MSC) communication protocol.

Claims

1. A portable device comprising:

a solid-state memory device including a data object including stored data and associated object-based organization data; and

a processor, the solid-state memory device responsive to the processor, the processor configured to access the solid-state memory device to retrieve the stored data from the data object and configured to communicate the stored data using a mass storage class (MSC) communication protocol.

2. The portable device of claim 1, wherein the data object is compatible with media transfer protocol (MTP).

3. The portable device of claim 1, further comprising a universal serial bus (USB) interface responsive to the processor, the processor configured to provide the data using the mass storage class (MSC) communication protocol via the universal serial bus (USB) interface.

4. The portable device of claim 1, wherein the solid-state memory device includes a non-volatile memory device.

5. The portable device of claim 4, wherein the non-volatile memory device is a flash memory device.

6. The portable device of claim 5, wherein the flash memory device is a NAND flash memory device.

7. The portable device of claim 1, wherein the solid state memory device includes a plurality of objects, each object including object-based organization data, the object-based organization data including metadata, the metadata including virtual file allocation table data.

8. The portable device of claim 7, wherein the processor is configured to access the plurality of objects and generate a virtual file allocation table based at least in part on the virtual file allocation table data.

9. The portable device of claim 7, wherein the processor is configured to access the plurality of objects and generate a virtual directory table based at least in part on the virtual file allocation table data.

10. The portable device of claim 7, wherein the virtual file allocation table data includes logical cluster data.

11. The portable device of claim 1, wherein the processor is configured to receive a mass storage class communication requesting a file allocation table and wherein the processor is configured to provide a virtual file allocation table in response to receiving the mass storage class (MSC) communication requesting the file allocation table.

12. The portable device of claim 11, wherein the processor is configured to receive a mass storage class (MSC) request for the data and to determine the data object including the data.

13. A method of accessing data stored in a solid-state memory device, the method comprising:

receiving a mass storage class (MSC) request for a data file;

determining a data object associated with the data file; and

accessing data associated with the stored data object, the data stored in the solid-state memory device.

14. The method of claim 13, wherein the solid-state memory device is a non-volatile memory device.

15. The method of claim 13, wherein the mass storage class (MSC) request includes a sector and offset location of the data file.

16. The method of claim 13, wherein the stored data object includes metadata including virtual file allocation table data.

17. The method of claim 16, further comprising generating a virtual file allocation table based at least in part on virtual file allocation table data.

18. The method of claim 17, further comprising providing the virtual file allocation table in response to a request for a file allocation table.

19. The method of claim 13, further comprising:

receiving a mass storage class (MSC) communication including the data file for storage;

generating the data object including metadata and the data of the data file, the metadata including a virtual file allocation table data; and

storing the data object in the solid-state memory device.

20. A method of accessing data in a solid-state memory device, the method comprising:

storing a data object in the solid-state memory device, the data object including metadata and data, the metadata including a virtual file allocation table data;

reading the virtual file allocation table data from the data object; and

generating a virtual file allocation table based at least in part on the virtual file allocation table data.

21. The method of claim 20, wherein the virtual file allocation table data includes logical cluster data.

22. The method of claim 20, further comprising generating a directory table based at least in part on the virtual file allocation table data.

23. The method of claim 20, further comprising:

receiving a request for a file allocation table from a host device; and

providing the virtual file allocation table to the host device.

24. The method of claim 23, further comprising providing a directory table in response to receiving the request.

25. A method of storing data in a solid-state memory device, the method comprising:

receiving a mass storage class (MSC) communication including data for storage;

generating a data object, the data object including metadata and the data for storage, the metadata including a virtual file allocation table data; and

storing the data object in the solid-state memory device.

26. The method of claim 25, wherein the virtual file allocation table data includes logical cluster data.

27. The method of claim 25, further comprising generating a virtual file allocation table and a directory table based at least in part on the virtual file allocation table data.

28. The method of claim 27, further comprising:

receiving a request for a file allocation table from a host device; and

providing the virtual file allocation table to the host device in response to the request.

29. The method of claim 28, further comprising providing a directory table in response to receiving the request.

30. A solid-state memory device configured to store a data object, the data object including metadata and data, the metadata including virtual file allocation data.

31. The solid-state memory device of claim 30, wherein the data object is compatible with media transfer protocol (MTP).

32. The solid-state memory device of claim 30, wherein the virtual file allocation data includes logical address location information.