Updating metadata stored in a read-only media file

• US 20060149704A1
• Filed: 12/30/2004
• Published: 07/06/2006
• Est. Priority Date: 12/30/2004
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Novak, Michael, Plastina, Daniel, Wyatt, Stuart Alan
• Granted Patent: US 7,272,592 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70
• CPC Class Codes: G06F 16/48 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
• CPC Class Codes: Y10S 707/99932 Access augmentation or optimizing
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

Storing metadata updates for a read-only media file. The media file has content and metadata describing the content. Responsive to a user or application program updating the metadata, the invention stores the updates to the metadata in an update data store when the media file is in the read-only state. The update data store is associated with the media file. The invention reconciles the metadata of the media file with the updates stored in the update data store to create updated metadata. The invention attempts to write the updated metadata to the media file when the media file is available with write access.

Claims

1. A computer-implemented method for updating metadata associated with a media file, said media file having at least a read-only state and a writeable state, said computer-implemented method comprising:

opening a media file having content and metadata describing the content;

storing one or more updates to the metadata in an update data store when the media file is in the read-only state, said update data store being associated with the media file;

reconciling the metadata of the media file with the updates stored in the update data store to create updated metadata; and

storing the updated metadata in the media file when the media file is in the writeable state.

2. The computer-implemented method of claim 1, wherein storing the one or more updates to the metadata comprises storing the one or more updates to the metadata in an update data store when a portion of the media file storing the metadata is in the read-only state.

3. The computer-implemented method of claim 1, further comprising:

closing the media file when the media file is in the read-only state;

re-opening the media file into the writeable state; and

storing the updated metadata in the re-opened media file.

4. The computer-implemented method of claim 1, wherein opening the media file comprises opening the media file having one or more of the following as the content:

audio data, video data, and still image data.

5. The computer-implemented method of claim 1, wherein the media file is capable of being in the read-only state independent of a state of the update data store.

6. The computer-implemented method of claim 1, further comprising mapping the metadata stored in the media file to a first value and storing the first value in the update data store, and wherein reconciling the metadata of the media file with the updates stored in the update data store to create the updated metadata comprises:

mapping the metadata stored in the media file to a second value;

comparing the first value with the second value; and

storing the updated metadata in the media file as a function of the compared first value and second value.

7. The computer-implemented method of claim 1, further comprising:

rendering the content; and

receiving the updates from a user, said updates comprising a rating for the rendered content.

8. The computer-implemented method of claim 1, wherein one or more computer-readable media have computer-executable instructions for performing the computer-implemented method recited in claim 1.

9. One or more computer-readable media having computer-executable components for updating metadata stored within a media file, said media file further storing content, said metadata describing the content, said media file having at least a read-only state and a writeable state, said components comprising:

a data stream module for storing, in a memory area, one or more updates to metadata when the media file is in the read-only state, said memory area being associated with the media file;

a processor module for creating updated metadata by reconciling the metadata of the media file with the updates stored in the memory area; and

a media module for storing the updated metadata in the media file when the media file is in the writeable state.

10. The computer-readable media of claim 9, wherein the data stream module stores, in the memory area, the one or more updates to the metadata when a portion of the media file storing the metadata is in the read-only state.

11. The computer-readable media of claim 9, wherein the media file is capable of being in the writeable state independent of a state of the memory area.

12. The computer-readable media of claim 9, further comprising a file system module for opening the media file into the read-only state, and wherein the file system module further closes the media file and re-opens the media file into the writeable state, and wherein the media module further stores the updated metadata in the media file re-opened by the file system module.

13. The computer-readable media of claim 9, wherein the processor module reconciles the metadata of the media file with the updates stored in the memory area by comparing a timestamp associated with the metadata of the media file with the metadata in the memory area.

14. A system for updating metadata associated with a media file, said media file having at least a read-only state and a writeable state, said system comprising:

a memory area storing a media file having content and metadata describing the content, said memory area further storing updates to the metadata in an update portion, said update portion of the memory area being associated with the media file stored in the memory area;

a processor configured to execute computer-executable instructions for;

storing updates to the metadata in the update portion of the memory area when the media file is in the read-only state;

reconciling the metadata of the media file with the updates stored in the update portion to create updated metadata; and

storing the updated metadata in the media file when the media file is in the writeable state.

15. The system of claim 14, wherein the processor is further configured to execute computer-executable instructions for deleting the update portion responsive to storing the updated metadata in the media file.

16. The system of claim 14, wherein the memory area and the processor are associated with a media player.

17. The system of claim 14, further comprising means for opening the media file.

18. The system of claim 14, further comprising means for storing updates to the metadata in the update portion of the memory area when the media file is in the read-only state.

19. The system of claim 14, further comprising means for reconciling the metadata of the media file with the updates stored in the update portion to create updated metadata.

20. The system of claim 14, further comprising means for storing the updated metadata in the media file when the media file is in the writeable state.