Method and apparatus for automatic equalization mode activation

• US 7,471,988 B2
• Filed: 06/28/2002
• Issued: 12/30/2008
• Est. Priority Date: 09/11/2001
• Status: Active Grant

• Current Assignee: Dolby Laboratories Licensing Corporation (Dolby Laboratories Incorporated)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Smith, Margaret Paige, Johnson, Lisa Renee, Cheah, Sin Hui
• Primary Examiner(s): Briney, III; Walter F
• Application Number:
  US10/489,211
• Publication Number:
  US 20040237750A1
• Time in Patent Office: 2,377 Days
• Field of Search: 700/94
• US Class Current: 700/94
• 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 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: G11C 2207/16 Solid state audio deprecated, only for historical reasons, G06F3/16, G11B
• CPC Class Codes: G11C 7/16 Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters

Abstract

A digital audio player and a method for processing encoded digital audio data, wherein the digital audio data is encoded using one of a plurality of encoding formats. The exemplary audio data player includes a hard disk or other data storage medium for storing data files, a microcontroller, buffer memory for anti-skip protection, and an audio decoder. The encoded audio data files and associated decoder files are downloaded from a personal computer or similar device to the audio data player hard drive. The player provides a menu-driven user interface for selection, sorting, and playback of stored audio data files. The audio decoder, generally a digital signal processor, provides various preset equalization modes. The preset modes are specific to audio genres such as jazz, pop, and rock. The user may select a specific equalization mode by using the user interface, or the preset equalization mode will be automatically set based on the genre, or other attribute information, included in a tag portion of the audio data file.

Claims

1. An audio data player, comprising:

a data storage device for storing a plurality of encoded audio data files, the encoded audio data files including at least one preset genre category and at least one user created genre category, wherein each said preset genre category includes a corresponding preset equalization setting and each said user created genre category includes a corresponding user created equalization setting;

a signal processing unit for receiving a selected one of the encoded audio data files, decoding the selected audio data file and providing an output signal;

a user input device for accepting user inputs; and

a microcontroller, coupled to the data storage device, the signal processing unit and the user input device, for controlling the operation of the data storage device and the signal processing unit in response to the user inputs;

wherein the signal processing unit provides a sound equalizer having a plurality of selectable equalization settings, and the signal processing unit is adapted to identify one of the preset genre category and the user created genre category associated with the selected audio data file, and to automatically select one of the corresponding preset equalization setting and the corresponding user created equalization setting in response to the identification.

2. The audio data player of claim 1, wherein the encoded audio data files correspond to MP3 formatted files.

3. The audio data player of claim 2, wherein each said preset genre category is one of a jazz category, a pop category and a rock category.

4. The audio data player of claim 2, wherein information representing the preset genre category is stored in an ID3 tag.

5. The audio data player of claim 2, wherein the data storage device comprises a map for correlating each said preset genre category with its corresponding preset equalization setting, and for correlating each said user created genre category with its corresponding user created equalization setting.

6. A method for processing an audio data file, comprising the steps of:

providing a data storage device for storing a plurality of encoded audio data files, the encoded audio data files including at least one preset genre category and at least one user created genre category, wherein each said preset genre category includes a corresponding preset equalization setting and each said user created genre category includes a corresponding user created equalization setting;

providing an interface for enabling the user to select one of a plurality of encoded audio data files for playback;

identifying one of the preset genre category and the user created genre category associated with the selected audio data file; and

automatically selecting one of the corresponding preset equalization setting and the corresponding user created equalization setting in response to the identification.

7. The method of claim 6, wherein the plurality of audio data files include MP3 files.

8. The method of claim 7, wherein each said preset genre category is one of a jazz category, a pop category and a rock category.

9. The method of claim 7, wherein information representing the preset genre category is stored in an ID3 tag.

10. The method of claim 7, wherein the data storage device comprises a map for correlating each said preset genre category with its corresponding preset equalization setting, and for correlating each said user created genre category with its corresponding user created equalization setting.

11. An audio data player, comprising:

a data storage device for storing a plurality of encoded audio data files, the encoded audio data files including at least one preset genre category and at least one user created genre category, wherein each said preset genre category includes a corresponding preset equalization setting and each said user created genre category includes a corresponding user created equalization setting;

a signal processing unit for processing a selected one of the encoded audio data files and providing an output signal; and

wherein the signal processing unit provides a sound equalizer having a plurality of selectable equalization settings, and the signal processing unit is adapted to identify one of the preset genre category and the user created genre category associated with the selected audio data file, and to automatically select one of the corresponding preset equalization setting and the corresponding user created equalization setting in response to the identification.

12. The audio data player of claim 11, wherein the encoded audio data files correspond to MP3 formatted files.

13. The audio data player of claim 11, wherein each said preset genre category is one of a jazz category, a pop category and a rock category.

14. The audio data player of claim 11, wherein information representing the preset genre category is stored in an ID3 tag.

15. The audio data player of claim 11, wherein the data storage device comprises a map for correlating each said preset genre category with its corresponding preset equalization setting, and for correlating each said user created genre category with its corresponding user created equalization setting.