Apparatus and method for reproducing audio file

• US 7,903,510 B2
• Filed: 11/21/2006
• Issued: 03/08/2011
• Est. Priority Date: 09/19/2000
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Han, Yong Hee, Lee, Han Sang, Shin, Jong In, Lee, Myung Gu
• Primary Examiner(s): Edun; Muhammad N
• Application Number:
  US11/602,370
• Publication Number:
  US 20070064562A1
• Time in Patent Office: 1,568 Days
• Field of Search: None
• US Class Current: 369/47.15
• CPC Class Codes: G11B 19/125 involving the detection of carrier data format
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/1262 with more than one format/standard, e.g. conversion from CD-audio format to R-DAT format
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/329 on a disc [VTOC]

Abstract

A method of reproducing an audio file includes: identifying a type of audio data in the audio file based on an extension information of the audio file separated from but associated with the audio data of the audio file; and determining whether the audio file is reproducible by checking whether a part of the audio file constructs a specific format stream corresponding to the identified audio type.

Claims

1. An apparatus for reproducing audio information stored on a disc, said audio information including one or more music files each having a file name extension, said apparatus comprising:

a reader to detect said disc and access the audio information from the detected disc; and

a controller operable to identify a type of audio information based on a file name extension of the audio information, including identifying the one or more music files based on a file name extension,

wherein the controller is operable to automatically establish a reproducing mode for the audio information based on the identified type of audio information and to automatically initiate playback of said audio information based on the established reproducing mode.

2. The apparatus of claim 1, wherein at least one of the music files is a MP3 file having a .MP3 file extension.

3. The apparatus of claim 2, wherein the controller is a non-general purpose controller.

4. The apparatus of claim 3, wherein the non-general purpose controller is application-specific circuitry.

5. The apparatus of claim 3, wherein the non-general purpose controller is programmable circuitry.

6. The apparatus of claim 5, wherein the non-general purpose controller is a microcontroller configured to detect the one or more MP3 files.

7. The apparatus of claim 5, wherein the non-general purpose controller is configured to identify a type of audio information based on the file name extension of the audio information, including identifying the one or more MP3 files based on a .MP3 file extension.

8. The apparatus of claim 5, wherein the non-general purpose controller is configured to automatically establish a reproducing mode for the audio information based on the identified type of audio information and to automatically reproduce said audio information based on the established reproducing mode.

9. The apparatus of claim 5, wherein the non-general purpose controller includes circuitry configured to identify a type of audio information based on the extension of the audio information, including identifying the one or more MP3 files based on a MP3 file extension, and wherein the controller is circuitry configured to automatically establish a reproducing mode for the audio information based on the identified type of audio information and to automatically reproduce said audio information based on the established reproducing mode.

10. The apparatus of claim 5, wherein the non-general purpose controller is operable to organize and number the one or more MP3 files based on a hierarchy of a tree structure.

11. The apparatus of claim 10, wherein the non-general purpose controller is operable to reproduce audio information starting with the lowest or highest numbered MP3 file.

12. The apparatus of claim 11, wherein the non-general purpose controller is operable to reproduce the one or more MP3 files in the order of said numbering.

13. The apparatus of claim 10, wherein the hierarchy of a tree structure includes one or more root folders having one or more MP3 files.

14. The apparatus of claim 13, wherein the root folders include one or more subfolders having one or more MP3 files.

15. The apparatus of claim 14, wherein the non-general purpose controller is operable to automatically detect the hierarchy of the tree structure and discriminate the one or more MP3 files therein in accordance with the tree structure hierarchy.

16. The apparatus of claim 15, wherein the non-general purpose controller is operable to automatically establish a reproducing mode for the audio information based on the identified type of audio information and to automatically reproduce said audio information based on the established reproducing mode and in accordance with the hierarchy of the tree structure.

17. The apparatus of claim 14, further comprising a display configured to display the name of the one or more root folders or subfolders.

18. The apparatus of claim 5, wherein the non-general purpose controller is further operable to generate a display of an error indication when the audio information does not construct normal MP3 audio data.

19. The apparatus of claim 18, wherein the non-general purpose controller is further operable to reproduce the audio information when the audio information constructs normal MP3 data;

and to skip the audio information when the audio information does not construct normal MP3 audio data.

20. The apparatus of claim 1, wherein at least one of the music files is a WAV file having a .WAV file extension.

21. The apparatus of claim 15, wherein said controller is further operable to establish a first reproducing mode for the accessed audio information when the identified file name extension includes a first extension, and to establish a second reproducing mode for the accessed audio information when the identified file name extension includes a second extension, and to automatically reproduce the accessed audio information based on the established reproducing mode.

22. The apparatus of claim 21, wherein the first extension comprises a .MP3 extension and the second extension comprises an extension other than a .MP3 extension.

23. The apparatus of claim 1, wherein the controller is a field-programmable gate array.

24. The apparatus of claim 1, wherein said controller is further operable to identify a type of audio information as one or more Compact Disc-Digital Audio (CDDA) tracks, to automatically establish a reproducing mode based on the identification of said one or more CDDA tracks, and to automatically reproduce said CDDA tracks based on the established reproducing mode.

25. The apparatus of claim 1, wherein the controller is further configured to automatically change the established reproducing mode when the audio information is not compatible with the established reproducing mode.

26. An apparatus for reproducing audio information stored on a disc, said apparatus comprising:

a reader to detect said disc and access the audio information from the detected disc; and

a controller operable to;

automatically identify an audio type associated with the accessed audio information,

establish a first reproducing mode for the accessed audio information when the identified audio type includes a first type audio type,

establish a second reproducing mode for the accessed audio information when the identified audio type includes a second audio type, and automatically reproduce the accessed audio information based on the established reproducing mode.

27. The apparatus of claim 26, wherein the controller is a non-general purpose controller.

28. The apparatus of claim 27, wherein the non-general purpose controller is application-specific circuitry.

29. The apparatus of claim 27, wherein the non-general purpose controller is programmable circuitry.

30. The apparatus of claim 29, wherein the first audio type is a compact Disc-Digital Audio (CDDA) audio type.

31. The apparatus of claim 30, wherein the second audio type is an MP3 audio type.

32. The apparatus of claim 30, wherein the second audio type is a WAV audio type.

33. The apparatus of claim 29, wherein the first audio type is a MP3 audio type.

34. The apparatus of claim 29, wherein the non-general purpose controller is programmed to generate a display of an error indication when the audio information does not construct normal MP3 audio data.

35. The apparatus of claim 29, wherein the non-general purpose controller is operable to automatically reproduce the audio information when the audio information constructs normal MP3 data;

and to skip the audio information when the audio information does not construct normal MP3 audio data.

36. The apparatus of claim 29, wherein the non-general purpose controller is operable to detect music files in said audio information and number said music files based on a hierarchy of a tree structure.

37. The apparatus of claim 36, wherein the hierarchy of a tree structure includes one or more root folders having one or more music files.

38. The apparatus of claim 37, wherein the root folders include one or more subfolders having one or more music files.

39. The apparatus of claim 38, wherein the non-general purpose controller is operable to sequentially number the music files for playing based on a hierarchy of a tree structure.

40. The apparatus of claim 39, wherein the non-general purpose controller is operable to reproduce the music files in the order of said numbering.

41. The apparatus of claim 26, wherein the controller is a field-programmable gate array.

42. The apparatus of claim 26, wherein the controller includes circuitry configured to detect one or more music files in said audio information.

43. The apparatus of claim 26, wherein the controller includes circuitry configured to detect one or more music files in said audio information.

44. An apparatus for reproducing audio information stored on a disc, said apparatus comprising:

a reader to detect the disc and access the audio information from the detected disc, said reader responsive to a first controller; and

a second controller, separate from said first controller, operable to;

identify a type of the accessed audio information based on a file name extension associated with the accessed audio information,

automatically establish a reproducing mode for the accessed audio information based on the identified type, and

automatically initiate playback of the accessed audio information based on the established reproducing mode.

45. The apparatus of claim 44, wherein the second controller decodes the accessed audio data in accordance with the identified type;

and converts the decoded data to an analog format for audible output.

46. The apparatus of claim 45, wherein the second controller analyzes the audio information;

and determines whether the audio information constructs normal MP3 audio data or not, based on results of the analysis.

47. The apparatus of claim 45, wherein the second controller is further operable to generate a display of an error indication when the audio information does not construct normal MP3 audio data.

48. The apparatus of claim 45, wherein the second controller automatically reproduces the audio information when the audio information constructs normal MP3 data;

and skips the audio information when the audio information does not construct normal MP3 audio data.

49. The apparatus of claim 44, wherein the second controller is further operable to automatically change the established reproducing mode when the audio information is not compatible with the established reproducing mode.

50. The apparatus of claim 44, wherein the second controller is a non-general purpose controller.

51. The apparatus of claim 50, wherein the non-general purpose controller is application-specific circuitry.

52. The apparatus of claim 50, wherein the non-general purpose controller is programmable circuitry.

53. The apparatus of claim 44, wherein the controller is a field-programmable gate array.

54. A method for reproducing audio information stored on a disc, said audio information including one or more music files each having a file name extension, said method comprising the steps of:

detecting said disc and accessing the audio information from the detected disc;

identifying a type of audio information based on a file name extension of the audio information, including identifying the one or more music files based on a file name extension;

automatically establishing a reproducing mode for the audio information based on the identified type of audio information and to automatically initiating playback of said audio information based on the established reproducing mode.

55. The method of claim 54, wherein at least one of the music files is a MP3 file having a .MP3 file extension.

56. The method of claim 54, wherein at least one of the music files is a WAV file having a .WAV file extension.

57. The method of claim 55, further comprising the step of identifying a type of audio information based on the file name extension of the audio information, including identifying the one or more MP3 files based on a .MP3 file extension.

58. The method of claim 55, further comprising the step of organizing and numbering the one or more MP3 files based on a hierarchy of a tree structure.

59. The method of claim 58, further comprising the step of reproducing audio information starting with the lowest or highest numbered MP3 file.

60. The method of claim 58, further comprising the step of detecting a hierarchy of a tree structure that includes one or more root folders having one or more MP3 files.

61. The method of claim 59, further comprising the step of developing root folders that include one or more subfolders having one or more MP3 files.

62. The apparatus of claim 54, further comprising the step of automatically recognizing the hierarchy of the tree structure and discriminating the one or more MP3 files therein in accordance with the tree structure hierarchy.