WIRELESS MEDIA SYSTEM WITH EMBEDDED MEDIA SERVER

• US 20100057886A1
• Filed: 12/20/2007
• Published: 03/04/2010
• Est. Priority Date: 12/20/2006
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Dodge, Andrew John
• Granted Patent: US 7,937,454 B2
• Time in Patent Office: Days
• US Class Current: 709/219
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A wireless media arrangement streams media over a local packet-based wireless network. According to an example embodiment, such a wireless media arrangement (e.g., 100) includes a digitally-encoded non-volatile storage device (NSD) (e.g., 110) such as a hard disc drive (HDD) that stores media, reloadable memory (e.g., 115) such as random-access memory (RAM), a media center (e.g. 105) to stream the stored media to a media playback device over the local network, and an embedded media server (e.g., 120). The media server wirelessly discovers and communicates with a media playback device (e.g., 125) on a local network. The media server also stores database tables on the NSD identifying the stored media. Upon startup, the media server loads a current version of the database tables into the reloadable memory; however, if an error is detected in the current version, then a pervious version of the database tables is loaded. When a change is made to the stored media, the media server stores a new version of the database tables to the NSD while maintaining a previously-stored version of the database tables to facilitate backup in the event of corruption or other error.

Claims

1. A wireless media playback arrangement for streaming media to a media playback device on a local packet-based wireless network, the arrangement comprising:

a digitally-encoded non-volatile storage device to store digital media content;

a reloadable memory to provide relatively fast access to data stored therein;

a media center to wirelessly communicate the stored digital media content to the media playback device over the local packet-based wireless network; and

a dynamically-updateable embedded media server adapted to

wirelessly discover and communicate with the media playback device on the local packet-based wireless network,

store database tables identifying the stored digital media content on the NSD,

pre-reserve space on the NSD to store the database tables,

upon startup, in response to detecting an error in a current version of the database tables, load a previous version of the database tables into the reloadable memory, and in response to not detecting an error, load the current version of the database tables into the reloadable memory, and

in response to a change in the stored digital media content, store a new version of the database tables to the NSD identifying the stored digital media content with the change while maintaining a previously-stored version of the database tables on the NSD.

2. The arrangement of claim 1, wherein the dynamically-updatable embedded media server is further adapted to pre-reserve all of the NSD space required to store database tables for a complete database upon a first initialization of the embedded media server.

3. The arrangement of claim 2, wherein the dynamically-updatable embedded media server is further adapted to pre-reserve all of the NSD space required to store digital media content identified by the complete database.

4. The arrangement of claim 1, wherein the dynamically-updateable embedded media server detects a presence of a validation key to determine which version of the database tables to load into the reloadable memory

5. The arrangement of claim 1, wherein the dynamically-updateable embedded media server is further adapted to write a validation key to the NSD that is a last file written when the embedded media server stores the new version of the database tables to the NSD.

6. The arrangement of claim 5, wherein the validation key is an empty file.

7. The arrangement of claim 1, wherein the dynamically-updateable embedded media server is further adapted to store the new version of the database tables to the NSD in response to a predetermined number of changes in the stored digital media content

8. The arrangement of claim 1, wherein the database tables include frequently used data that identifies the stored digital media content and rarely used data that identifies the stored digital media content is stored on the NSD.

9. The arrangement of claim 1, wherein the dynamically-updateable embedded media server is further adapted to compare metadata in the version of the database tables loaded in to the reloadable memory to metadata stored on the NSD to ensure database consistency.

10. A wireless media playback arrangement for streaming media to a media playback device on a local packet-based wireless network, the arrangement comprising:

means for storing digital media content;

reloadable memory to provide relatively fast access to data stored therein;

means for wirelessly communicating the stored digital media content to the media playback device over the local packet-based wireless network; and

means for wirelessly discovering and communicating with the media playback device on the local packet-based wireless network,

means for storing database tables identifying the stored digital media content,

means for pre-reserving space to store the database tables,

means, response to detecting an error in a current version of the database tables upon startup, for loading a previous version of the database tables into the reloadable memory, and in response to not detecting an error, for loading the current version of the database tables into the reloadable memory, and

responsive to a change in the stored digital media content, means for storing a new version of the database tables identifying the stored digital media content with the change while maintaining a previously-stored version of the database tables.

11. A method for streaming media from a dynamically-updateable embedded media server to a media playback device on a local packet-based wireless network, the method comprising:

storing digital media content on a digitally-encoded non-volatile storage device;

storing database tables identifying the digital media content on the NSD,

loading a current version of the database tables into reloadable memory that provides relatively fast access to data stored therein;

checking the current version of the database tables for an error;

in response to detecting an error, deleting the current version of the database tables and loading a previous version of the database tables into the reloadable memory;

discovering and communicating with the media playback device on the local packet-based wireless network;

using the version of the database tables loaded in the reloadable memory, streaming the stored digital media content to the media playback device over the local packet-based wireless network; and

in response to a change in the stored digital media content, storing a new version of the database tables to the NSD identifying the stored digital media content with the change while maintaining a previously-stored version of the database tables on the NSD.