Audio data transmission apparatus and method, audio data recording apparatus, and audio data recording medium

• US 6,452,960 B1
• Filed: 02/20/1998
• Issued: 09/17/2002
• Est. Priority Date: 03/03/1997
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sato, Hideo
• Primary Examiner(s): Chin, Stephen
• Assistant Examiner(s): Liu, Shuwang
• Application Number:
  US09/027,372
• Time in Patent Office: 1,670 Days
• Field of Search: 375/130, 375/140, 375/141, 375/143, 375/146, 375/147, 375/152, 375/216, 370/495, 370/494, 370/493, 370/214, 370/212, 379/93.01, 379/93.08, 379/93.26, 379/93.28, 379/93.31, 360/60, 348/484, 380/54
• US Class Current: 375/140
• CPC Class Codes: H04H 20/31 using in-band signals, e.g. subsonic or cue signal

Abstract

An audio data transmission and recording system and a recording medium according to the system. Gaps in the audio data are used to control the addition of spectrum-diffused data to the audio data. The gaps are also used to control demodulation of the spectrum-diffused data.

Claims

1. An audio data transmission apparatus for combining additional information with an audio signal, comprising:

gap insert position detection means for detecting a position in said audio signal where a gap can be inserted, said position corresponding to a temporal location where said audio signal has a large magnitude;

spectrum diffusion means for spectrum-diffusing said additional information prior to combination with said audio signal to generate spectrum diffused additional information;

dividing means for dividing said spectrum diffused additional information into a plurality of sections;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means; and

combine means for using said gap as a control signal for combining said plurality of sections and said audio signal.

2. An audio data transmission apparatus as claimed in claim 1, wherein said gap inserted by said gap insert means is used as a control signal for controlling a start, stop, and synchronization of said spectrum diffused additional information.

3. An audio data transmission apparatus as claimed in claim 2, wherein said spectrum-diffused additional information is multiplexed by said gap at an arbitrary position on said audio signal.

4. An audio data transmission apparatus as claimed in claim 3, wherein said arbitrary position corresponds to a temporal location where said audio signal has a wide frequency spectrum.

5. An audio data transmission apparatus as claimed in claim 2, wherein said gap is periodically inserted according to said audio signal so that said sections are recorded according to a time division.

6. An audio data transmission apparatus as claimed in claim 1, wherein said gap is inserted in said audio signal according to said additional information, so that said spectrum-diffused additional information and said additional information controlled by said gap are recorded in strata on said audio signal.

7. An audio data transmission method for combining additional information with an audio signal in which a position within said audio signal where a gap can be inserted is detected and the gap inserted at the position is used as a control signal for combining a spectrum-diffused version of said additional information with the audio signal, said spectrum-diffused version being combined with said audio signal so as to be transmitted, wherein said position within said audio signal corresponds to a temporal location where said audio signal has a large magnitude, and wherein said spectrum diffused version of said additional information is divided into a plurality of sections for combination with said audio signal.

8. An audio data recording apparatus for recovering additional information from a combination of said additional information and an audio signal, said additional information having been spectrum diffused and divided into a plurality of sections for combination with said audio signal, said apparatus comprising:

gap detection means for detecting a gap in said audio signal, said gap occurring at a temporal position within said audio signal where said audio signal has a large magnitude;

demodulating means for using said gap as a control signal for decoding the combination of said sections and said audio signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulating means.

9. An audio data recording apparatus as claimed in claim 8, wherein said demodulation means demodulates said sections according to said control signal even if said audio signal has a reproduction velocity modified.

10. An audio data transmission and recording apparatus for combining additional information with an audio signal and for recovering said additional information from the combination of said additional information and said audio signal, said apparatus comprising an audio data transmission apparatus and an audio data recording apparatus,

said audio data transmission apparatus including:

gap insert position detection means for detecting a position in said audio signal where a gap can be inserted, said position corresponding to a temporal location where said audio signal has a large magnitude;

spectrum diffusion means for spectrum diffusing said additional information prior to combination with said audio signal to generate spectrum diffused additional information;

dividing means for dividing said spectrum diffused additional information into a plurality of sections;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means; and

combine means for using said gap as a control signal for combining said plurality of sections and said audio signal; and

said audio data recording apparatus including;

gap detection means for detecting said gap;

demodulation means for using said gap as a control signal so as to demodulate the combination of said sections and said audio signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulation means.

11. An apparatus for combining additional information with a signal, comprising:

gap insert position detection means for detecting a position in said signal where a gap can be inserted, said position corresponding to a temporal location where said signal has a large magnitude;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means;

dividing means for dividing said additional information into a plurality of sections; and

combine means for using said gap as a control signal for combining said plurality of sections and said signal.

12. The apparatus as claimed in claim 11, wherein said gap inserted by said gap insert means is used as a control signal for controlling a start, stop, and synchronization of said additional information.

13. The apparatus as claimed in claim 12, wherein said additional information is multiplexed by said gap at an arbitrary position on said signal.

14. The apparatus as claimed in claim 13, wherein said arbitrary position is a position where said signal has a wide frequency spectrum.

15. The apparatus as claimed in claim 11, wherein said gap is periodically inserted according to said signal so that said additional information sections are recorded according to a time division.

16. The apparatus as claimed in claim 11, wherein said gap is inserted on said signal according to said additional information.

17. A method for combining additional information with a signal, in which a position within said signal where a gap can be inserted is detected and the gap inserted at the position is used as a control signal for combining said additional information with the signal, so that said additional information is combined with said signal for transmission, wherein said position within said signal corresponds to a temporal location where said signal has a large magnitude, and wherein said additional information is divided into a plurality of sections for combination with said signal.

18. An apparatus for recovering additional information that has been divided into a plurality of sections and combined with a signal, comprising:

gap detection means for detecting a gap in said signal, said gap occurring at a temporal position within said signal where said signal has a large magnitude;

demodulating means for using said gap as a control signal for decoding the combination of said sections and said signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulating means.

19. The apparatus as claimed in claim 18, wherein said demodulation means demodulates said additional information according to said control signal even if said signal has a reproduction velocity modified.

20. An apparatus for combining additional information with a signal and for recovering said additional information from the combination of said additional information and said signal, including a combining means and a gap detection means, said apparatus comprising:

gap insert position detection means for detecting a position in said signal where a gap can be inserted, said position corresponding to a temporal location where said signal has a large magnitude;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means;

dividing means for dividing said additional information into a plurality of sections;

combine means using said gap as a control signal for combing said plurality of sections and said signal;

gap detection means for detecting said gap;

demodulation means for using said gap as a control signal for decoding the combination of said sections and said signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulation means.

21. An apparatus for combining additional information with a signal, comprising:

gap insert position detection means for detecting a position in said signal where a gap can be inserted, said position corresponding to a temporal location where said signal has a large magnitude;

spectrum diffusion means for spectrum-diffusing said additional information prior to combination with said signal to generate spectrum diffused additional information;

dividing means for dividing said spectrum diffused additional information into a plurality of sections;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means; and

combine means for using said gap as a control signal for combining said plurality of sections and said signal.

22. The apparatus as claimed in claim 21, wherein said gap inserted by said gap insert means is used as a control signal for controlling a start, stop, and synchronization of said spectrum diffused additional information.

23. The apparatus as claimed in claim 22, wherein said spectrum diffused additional information is multiplexed by said gap at an arbitrary position on said signal.

24. The apparatus as claimed in claim 23, wherein said arbitrary position is a position where said signal has a wide frequency spectrum.

25. The apparatus as claimed in claim 21, wherein said gap is periodically inserted according to said signal so that said sections are recorded according to a time division.

26. The apparatus as claimed in claim 21, wherein said gap is inserted on said signal according to said additional information, so that said spectrum diffused additional information and said additional information controlled by said gap are recorded in strata on said signal.

27. A method for combining additional information with a signal in which a position within said signal where a gap can be inserted is detected and the gap inserted at the position is used as a control signal for combining a spectrum-diffused version of said additional information with the signal, so that said spectrum-diffused version combined with said signal may be transmitted, wherein said position within said signal corresponds to a temporal location where said signal has a large magnitude, and wherein said spectrum diffused version of said additional information is divided into a plurality of sections for combination with said signal.

28. An apparatus for recovering additional information from a combination of said additional information and a signal, said additional information having been spectrum diffused and divided into sections for combination with said signal, said apparatus comprising:

gap detection means for detecting a gap in said signal, said gap corresponding to a temporal location within said signal where said signal has a large magnitude;

demodulating means for using said gap as a control signal for decoding the combination of said sections and said signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulating means.

29. The apparatus as claimed in claim 28, wherein said demodulating means demodulates said sections according to said control signal even if said signal has a reproduction velocity modified.

30. An apparatus for combining additional information with a signal and for recovering said additional information from the combination of said additional information and said signal, including a combining means and a gap detection means, said apparatus comprising:

gap insert position detection means for detecting a position in said signal where a gap can be inserted, said position corresponding to a temporal location where said signal has a large magnitude;

spectrum diffusion means for performing a spectrum diffusion on said additional information to generate spectrum diffused additional information;

dividing means for dividing said spectrum diffused additional information into a plurality of sections;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means;

combine means using said gap as a control signal for combining said plurality of sections and said signal;

gap detection means for detecting said gap;

demodulation means for using said gap as a control signal for decoding the combination of said sections and said signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulation means.

31. An apparatus for combining additional information with an audio signal, comprising:

gap insert position detection means for detecting a position in said audio signal where a gap can be inserted, said position corresponding to a temporal location within said audio signal where said audio signal has a large magnitude;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means;

dividing means for dividing said additional information into a plurality of sections; and

combine means for using said gap as a control signal for combining said plurality of sections and said audio signal.

32. The apparatus as claimed in claim 31, wherein said gap inserted by said gap insert means is used as a control signal for controlling a start, stop, and synchronization of said additional information.

33. The apparatus as claimed in claim 32, wherein said additional information is multiplexed by said gap at an arbitrary position on said audio signal.

34. The apparatus as claimed in claim 33, wherein said arbitrary position is a position where said audio signal has a wide frequency spectrum.

35. The apparatus as claimed in claim 31, wherein said gap is periodically inserted according to said audio signal so that said additional information sections are recorded according to a time division.

36. The apparatus as claimed in claim 31, wherein said gap is inserted on said audio signal according to said additional information.

37. A method for combining additional information with an audio signal in which a position within said audio signal where a gap can be inserted is detected and the gap inserted at the position is used as a control signal for combining said additional information with the audio signal, so that said additional information is combined with said audio signal for transmission, wherein said position within said audio signal corresponds to a temporal location where said audio signal has a large magnitude, and wherein said additional information is divided into a plurality of sections for combination with said audio signal.

38. An apparatus for recovering additional information that has been divided into a plurality of sections and combined with an audio signal, comprising:

gap detection means for detecting a gap in said audio signal, said gap occurring at a temporal position within said audio signal where said audio signal has a large magnitude;

demodulating means for using said gap as a control signal for decoding the combination of said sections and said audio signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulating means.

39. The apparatus as claimed in claim 38, wherein said demodulating means demodulates said additional information according to said control signal even if said audio signal has a reproduction velocity modified.

40. An apparatus for combining additional information with an audio signal and for recovering said additional information from the combination of said additional information and said audio signal, including a combining means and a gap detection means, said apparatus comprising:

gap insert position detection means for detecting a position in said audio signal where a gap can be inserted, said gap corresponding to a temporal location where said audio signal has a large magnitude;

gap insert means for inserting said gap at the insert position detected by said gap insert position detection means;

dividing means for dividing said additional information into a plurality of sections;

combine means using said gap as a control signal for combining said plurality of sections and said audio signal;

gap detection means for detecting said gap;

demodulation means for using said gap as a control signal for decoding the combination of said sections and said audio signal to determine said sections; and

correction means for correcting said sections according to information demodulated by said demodulation means.