Methods for writing and reading compressed audio data

• US 6,446,073 B1
• Filed: 10/07/1999
• Issued: 09/03/2002
• Est. Priority Date: 06/17/1999
• Status: Expired due to Fees

• Current Assignee: Sonic Solutions (Adeia Inc.)
• Original Assignee: ROXIO Incorporated (MelodyVR Group Plc)
• Inventors: D'Amato, Andrea, Berhan, Michel D.
• Primary Examiner(s): Shah, Sanjiv
• Application Number:
  US09/414,378
• Time in Patent Office: 1,062 Days
• Field of Search: 707/104, 707/203, 707/101, 707/100, 707/102, 369/44.24, 369/32, 369/48, 704/215, 704/500, 386/87, 360/73, 711/1, 846/09, 846/02
• US Class Current: 369/30.04
• CPC Class Codes: G10H 1/0041 in coded form
• CPC Class Codes: G10H 2250/571 Waveform compression, adapted for music synthesisers, sound banks or wavetables audio compression G10L19/00
• CPC Class Codes: Y10S 707/916 Audio
• CPC Class Codes: Y10S 707/99942 Manipulating data structure, e.g. compression, compaction, compilation

Abstract

A method for writing compressed audio data to a compact disc media is provided. The method includes selecting songs to be written in a session and reserving a first track. After the first is reserved, the method proceeds to writing a first temporary data structure and audio data to a second track following the first track. After the second track is closed, part of first temporary data structure (e.g., the recompiled INFO.CD3 part) is written to the reserved first track and the session is closed. Another method includes beginning a session writing the compressed audio data to the compact disc media. A track that includes a file system and an audio data section is then written. The writing of the track further includes writing an INFO.CD3 file, writing an ISO file system, and writing a FILEINFO.LC file following the ISO file system. Once the audio data section is written, the method proceeds to closing the track and closing the session.

Claims

1. A method for writing compressed audio data to a compact disc media, comprising:

beginning a session writing the compressed audio data to the compact disc media;

writing a track including a file system and audio data, the writing of the track that includes the file system further comprises,

writing an INFO.CD3 file;

writing an ISO file system after the INFO.CD3 file is written;

writing a FILEINFO.LC file following the ISO file system;

closing the track; and

closing the session.

2. A method for writing compressed audio data to a compact disc media as recited in claim 1, wherein the ISO file system includes a pointer to the INFO.CD3 file and the FILEINFO.LC file.

3. A method for writing compressed audio data to a compact disc media as recited in claim 1, wherein the INFO.CD3 file includes a pointer to the FILEINFO.LC file.

4. A method for writing compressed audio data to a compact disc media as recited in claim 1, wherein the INFO.CD3 and the FILEINFO.LC files define a microcontroller system structure (MSS) that is independently accessible to a microcontroller-based player.

5. A method for writing compressed audio data to a compact disc media as recited in claim 1, wherein the FILEINFO.LC file incorporates pointers to audio files, image files, video files, and lyrics files.

6. A method for writing compressed audio data to a compact disc media as recited in claim 1, wherein when the file system is written, the method includes,

writing the INFO.CD3 file to a sector 15 of the track;

writing the ISO file system beginning at a sector 16 of the track; and

writing the FILEINFO.LC file at location following the file system.

7. A method for writing compressed audio data to a compact disc media as recited in claim 1, further comprising:

beginning a second session writing the compressed audio data to the compact disc media;

writing a second track including a file system and an audio data section, the writing of the second track that includes the file system further comprises,

writing another INFO.CD3 file to the second track;

writing another ISO file system to the second track;

writing another FILEINFO.LC file following the ISO file system of the second track;

closing the second track after completing the writing of the audio data section; and

closing the second session.

8. A computer readable media having program instructions for writing compressed audio data to a compact disc media, the operations of the computer readable media comprise:

program instructions for beginning a session writing the compressed audio data to the compact disc media;

program instructions for writing a track including a file system and an audio data section, the writing of the file system further comprises,

program instructions for writing an INFO.CD3 file;

program instructions for writing an ISO file system;

program instructions for writing a FILEINFO.LC file following the ISO file system;

program instructions for closing the second track; and

program instructions for closing the session.

9. A computer readable media having program instructions for writing compressed audio data to a compact disc media as recited in claim 8, wherein the ISO file system is an ISO 9660 file system.

10. A computer readable media having program instructions for writing compressed audio data to a compact disc media as recited in claim 8, wherein the INFO.CD3 file includes a pointer to the FILEINFO.LC file.

11. A computer readable media having program instructions for writing compressed audio data to a compact disc media as recited in claim 8, wherein the INFO.CD3 and the FILEINFO.LC files define a microcontroller system structure (MSS) that is independently accessible to a microcontroller-based player.

12. A computer readable media having program instructions for writing compressed audio data to a compact disc media as recited in claim 8, wherein when the file system is written, the program instructions include,

program instructions for writing the INFO.CD3 file to a sector 15 of the track;

program instructions for writing the ISO file system beginning at a sector 16 of the track; and

program instructions for writing the FILEINFO.LC file at a location following the file system.