Method for avoiding refreshing a database of metadata associated with digital media content

• US 8,655,463 B2
• Filed: 05/18/2007
• Issued: 02/18/2014
• Est. Priority Date: 05/18/2007
• Status: Active Grant

• Current Assignee: SanDisk Technologies LLC (Western Digital Corporation)
• Original Assignee: Sandisk Technologies Incorporated (Western Digital Corporation)
• Inventors: Thanos, William, Kwon, Hyuk-Il, Yoon, In-Soo, Meza, Joseph R., Jeppson, David
• Primary Examiner(s): Flanders, Andrew C
• Application Number:
  US11/804,994
• Publication Number:
  US 20080288098A1
• Time in Patent Office: 2,468 Days
• Field of Search: 700/94, 710/104, 710/301
• US Class Current: 700/94
• CPC Class Codes: G06F 16/68 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
• CPC Class Codes: G11B 2220/61 wherein solid state memory is used for storing A/V content storing computer data in solid state memories G06F
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier

Abstract

A method for avoiding refreshing a database of metadata associated with digital media content is disclosed. In one embodiment, a digital media player storing a database of metadata associated with digital media content determines whether a removable memory device was connected with the digital media player while the digital media player was powered down. The digital media player refreshes the database only if it is determined that the removable memory device was connected with the digital media player while the digital media player was powered down. In another embodiment, the digital media player determines whether the digital media content stored on the removable memory device changed since the database was last updated. The digital media player refreshes the database if it is determined that the digital media content stored on the removable memory device changed since the database was last updated.

Claims

1. A method for avoiding refreshing a database of metadata associated with digital media content, the method comprising:

performing the following during power up of a digital media player, wherein a memory device is connected to the digital media player at power up, and wherein the digital media player stores a database of metadata associated with digital media content;

(a) determining from a latch in the digital media player whether the memory device was connected to the digital media player while the digital media player was powered down, wherein a battery powers the latch when the digital media player is powered down, wherein a clock of the latch is connected to a memory device slot of the digital media player, and wherein insertion of the memory device into the memory device slot while the digital media player was powered down causes a different state to be set in the latch because of a change in input to the clock, whereas removal of the memory device from the memory device slot does not reset the latch; and

(b) refreshing the database only if it is determined that the memory device was connected to the digital media player while the digital media player was powered down as opposed to before the digital media player was powered down, refreshing the database.

2. The method of claim 1, wherein the latch comprises a D flip-flop.

3. The method of claim 1, wherein the database comprises a user interface database.

4. The method of claim 3, wherein the digital media player further stores a media transfer protocol database.

5. The method of claim 4, wherein (b) comprises refreshing the user interface database but not the media transfer protocol database.

6. The method of claim 4, wherein (b) comprises refreshing both the user interface database and the media transfer protocol database.