This invention relates to a karaoke CD format and a device for controlling audio signals utilizing the karaoke CD format which provides a user with selective reproduction of the voice of a player. The karaoke CD format includes a CD format divided into video sectors and audio sectors. The audio sectors are further divided into a part for recording accompaniment sound and playing sound at the same time and a part for recording accompaniment sound only. There is provided record coding information for distinguishing the parts. A system, method and storage medium for reproducing digital data, are discussed. According to an embodiment, the system includes a demodulator configured to demodulate digital video data and digital audio data to restore an original data; a data processor configured to receive the digital video data and the digital audio data, demodulated by the demodulator, process the digital video data and at least one of first and second types of digital audio data, the data processor including a system time clock, a memory configured to store the digital video data and the first and second types of digital audio data, a video presentation part configured to receive the system time clock to control a presentation timing of the digital video data, and an audio presentation part configured to receive the system time clock to control a presentation timing of the first or second types of digital audio data; and a controller, coupled to the data processor, configured to control the data processor to process the digital video data and at least one of the first and second types of the digital audio data identified by the second information.
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0. 6. A device for processing a digital signal, comprising:
an audio signal processor receiving data units of digital audio data, the data units corresponding to at least one of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each data unit including attribute information, which has:
a) coding information indicating a coding mode of the digital audio data, and
b) identification information, different than said coding information, identifying the data unit as one of the first type of digital audio data or the second type of digital audio data;
the audio signal processor extracting the identification information, and separating the data units of the first type from the data units of the second type using the identification information, said signal processor including a system time clock, a memory for storing the data units of the first type and the second type, and first and second audio presentation parts receiving the system time clock to control a presentation timing of the data units of the first type or the second type; and
a control circuit controlling the audio signal processor to output an audio signal corresponding to the data units of one of the first or second types, based on the identification information.
0. 1. A device for reproducing a digital signal recorded on a medium, the digital signal including a video signal and an audio signal, the audio signal being composed of data units, the data units corresponding to at least one of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each data unit including attribute information, which has:
a) first information indicating a coding mode of the digital audio data, and
b) second information, different than said first information, identifying the data unit as one of the first type of digital audio data or the second type of digital audio data;
the data units of audio signal being interleaved between data units of video signal, comprising:
a demodulator for demodulating the digital signal to restore an original signal;
a signal processor for receiving the audio signal, demodulated by the demodulator, extracting the second information, separating the data units corresponding to a first type of audio signal from data units corresponding to a second type of audio signal based on the extracted second information, said signal processor including a system time clock, a memory for storing the data units corresponding to the first type and the second type of audio signal, and first or second audio presentation parts receiving the system time clock to control a presentation timing of the first type or the second type of audio signal; and
a controller, coupled to the signal processor, controlling the signal processor to output the data units corresponding to the first type or the second type of the audio signal designated by a user input, wherein the first or second type of audio signal, designated by the user input, is identified using the second information.
0. 12. A method for processing a digital signal, comprising:
receiving data units of digital audio data, the data units corresponding to at least one of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each data unit including attribute information, which has:
a) coding information indicating a coding mode of the digital audio data, and
b) identification information, different than said coding information, identifying the data unit as one of the first type of digital audio data or the second type of digital audio data;
extracting the identification information;
separating the data units of the first type from the data units of the second type using the identification information by storing the data units of the first and second types in a memory, receiving the data units of the first and second types in first or second audio presentation parts along with a system time clock to control a presentation timing of data units of the first or second type; and
outputting audio data corresponding to the data units of the first or second type in response to the identification information.
0. 4. A method for reproducing a digital signal recorded on a medium, said digital signal including a video signal and an audio signal, the audio signal being composed of data units, the data units corresponding to at least one of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each data unit including attribute information, which has:
a) first information indicating a coding mode of the digital audio data, and
b) second information, different than said first information, identifying the data unit as one of the first type of digital audio data or the second type of digital audio data;
the data units of audio signal being interleaved between data units of video signal, the method comprising the steps of:
demodulating the digital signal to restore an original signal;
receiving the demodulated audio signal;
extracting the second information;
separating the data units corresponding to a first type of audio signal from data units corresponding to a second type of audio signal based on the extracted second information, by storing the first and second types of audio signals in a memory, receiving the data units corresponding to the first and second types of audio signals in first and second audio presentation parts along with a system time clock to control a presentation timing of the first or second type of audio signal; and
outputting one of the first or second types of audio signals in response to a user input designating one of the first or second types of audio signals, wherein the first or second type of audio signal, designated by the user input, is identified using the second information.
0. 51. A method of processing a digital data, comprising:
receiving the digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and digital audio data corresponding to at least two of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each digital audio data being specified by attribute information, which has:
a) first information for indicating the digital audio data, and
b) second information, different than said first information, for identifying one of the first type of digital audio data or the second type of digital audio data,
wherein the digital data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two types of digital audio data;
demodulating the digital video data and the digital audio data to restore an original data;
storing the digital video data and the at least two digital audio data;
processing the digital video data and at least one of first and second types of digital audio data; and
controlling a presentation timing of the digital video data and a presentation timing of the first or second types of digital audio data in response to a system time clock, the at least one of the first and second types of the digital audio data identified by the second information.
0. 40. A method of reproducing a digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and the data units of digital audio data corresponding to at least two of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each data unit of digital audio data including attribute information, which has:
a) first information for indicating a coding mode of the digital audio data, and
b) second information, different than said first information, for identifying the data unit as one of the first type of digital audio data or the second type of digital audio data,
wherein the data units of digital video data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two digital audio data, the method comprising:
demodulating the digital video data and the digital audio data to restore an original data;
receiving the digital video data and the digital audio data, demodulated by the demodulating step and processing the digital video data and at least one of first and second types of digital audio data; and
controlling a presentation timing of the digital video data and a presentation timing of the first or second types of digital audio data in response to a system time clock, the at least one of the first and second types of the digital audio data identified by the second information.
0. 61. A computer readable storage medium on which digital audio data and digital video data are recorded, he video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, the digital audio data comprising data units corresponding to at least two of:
1) a first type of digital audio data; and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each data unit of digital audio data including attribute information, which has:
a) first information indicating a coding mode of the digital audio data,
b) second information, different than said first information, for identifying the first type of digital audio data or the second type of digital audio data, and
wherein the second information is used for separating the data units of the first type from the data units of the second type stored in a memory and selectively outputting audio signal corresponding to the data units of the first or second types, and
wherein at least one of data unit of digital video data or digital audio data includes a time information including a reference time information for controlling a presentation timing of the digital video data and a presentation timing of the first or second types of digital audio data, the reference time information being used for generating a system time clock and the system time clock being used for synchronizing the presentation timing of digital video and the presentation timing of digital audio data, and a presentation time information for defining the presentation timing of the digital audio data and/or the first and second types of digital audio data, and
wherein the digital video data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two types of digital audio data.
0. 18. A system for reproducing a digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and the data units of digital audio data corresponding to at least two of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each data unit of digital audio data including attribute information, which has:
a) first information for indicating a coding mode of the digital audio data, and
b) second information, different than said first information, for identifying the data unit as one of the first type of digital audio data or the second type of digital audio data,
wherein the data units of digital video data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two digital audio data, the system comprising:
a demodulator configured to demodulate the digital video data and the digital audio data to restore an original data;
a data processor configured to receive the digital video data and the digital audio data, demodulated by the demodulator, process the digital video data and at least one of first and second types of digital audio data, said data processor including a system time clock, a memory configured to store the digital video data and the first and second types of digital audio data, a video presentation part configured to receive the system time clock to control a presentation timing of the digital video data, and an audio presentation part configured to receive the system time clock to control a presentation timing of the first or second types of digital audio data; and
a controller, coupled to the data processor, configured to control the data processor to process the digital video data and at least one of the first and second types of the digital audio data identified by the second information.
0. 29. A system for processing a digital data, comprising:
a receiving circuit configured to receive the digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and digital audio data corresponding to at least two of:
1) a first type of digital audio data, and
2) a second type of digital audio data which includes at least one content different from the first type of digital audio data;
each digital audio data being specified by attribute information, which has:
a) first information for indicating the digital audio data, and
b) second information, different than said first information, for identifying one of the first type of digital audio data or the second type of digital audio data,
wherein the digital data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two digital audio data;
a demodulator configured to demodulate the digital video data and the digital audio data to restore an original data;
a data storage configured to store the digital video data and the at least two digital audio data;
a data processing circuit configured to receive the digital video data and at least one of first and second types of digital audio data from the data storage, and process the digital video data and at least one of first and second types of digital audio data, the data processing circuit including a presentation part including a video presentation part and an audio presentation part, the video presentation part configured to receive the system time clock to control a presentation timing of the digital video data and the audio presentation part configured to receive the system time clock to control a presentation timing of the first or second types of digital audio data; and
a controller, coupled to the data processing circuit, configured to control the data processing circuit to process the digital video data and at least one of the first and second types of the digital audio data identified by the second information.
0. 2. A device as claimed in
0. 3. A device as claimed in
an MPEG audio decoder for decoding the audio signal.
0. 5. The method of
0. 7. The device of
0. 8. The device of
0. 9. The device of
0. 10. The device of
0. 11. The device of
a demodulator demodulating the digital audio data prior to receipt by the audio signal processor.
0. 13. The method of
0. 14. The method of
0. 15. The method of
comparing the system time clock to timing information in the digital audio data; and
outputting the audio data with a timing based on the comparison.
0. 16. The device of
0. 17. The device of
0. 19. The system of
wherein the first or second type of audio data, designated by the user input, is identified using the second information.
0. 20. The system of
0. 21. The system of
0. 22. The system of
0. 23. The system of
0. 24. The system of
0. 25. The system of
0. 26. The system of
a D/A converter coupled to the audio data processor to convert at least one of the first and second types of digital audio data to analog signal.
0. 27. The system of
wherein the data processor is configured to process the vocal data.
0. 28. The system of
0. 30. The system of
wherein the first or second type of audio data, designated by the user input, is identified using the second information.
0. 31. The system of
a demultiplexer configured to separate the data units corresponding to the first type of digital audio data from data units corresponding to the second type of digital audio data based on the second information.
0. 32. The system of
0. 33. The system of
0. 34. The system of
0. 35. The system of
0. 36. The system of
0. 37. The system of
a D/A converter coupled to the data processing circuit to convert at least one of the first and second types of digital audio data to analog signal.
0. 38. The system of
wherein the data processing circuit is configured to process the vocal data.
0. 39. The system of
0. 41. The method of
wherein the first or second type of audio data, designated by the user input, is identified using the second information.
0. 42. The method of
separating the data units corresponding to the first type of digital audio data from data units corresponding to the second type of digital audio data based on the second information.
0. 43. The method of
identifying the coding mode of the digital video data based on the mode information, the coding mode for indicating MPEG coding mode, and wherein the processing step includes decoding the compressed MPEG video data.
0. 44. The method of
identifying the coding mode of the digital audio data based on the first information, the coding mode for indicating MPEG coding mode, and wherein the processing step includes decoding the compressed MPEG audio data.
0. 45. The method of
0. 46. The method of
0. 47. The method of
0. 48. The method of
converting at least one of the first and second types of digital audio data to analog signal.
0. 49. The method of
wherein the processing step processes the vocal data.
0. 50. The method of
wherein the demodulating step demodulates the digital video data and the digital audio data recorded in the optical recording medium to the original data.
0. 52. The method of
wherein the first or second type of audio data, designated by the user input, is identified using the second information.
0. 53. The method of
separating the data units corresponding to the first type of digital audio data from data units corresponding to the second type of digital audio data based on the second information.
0. 54. The method of
identifying the coding mode of the digital video data based on the mode information, the coding mode for indicating MPEG coding mode, and wherein the processing step includes decoding the compressed MPEG video data.
0. 55. The method of
identifying the coding mode of the digital audio data based on the first information, the coding mode for indicating MPEG coding mode, and wherein the processing step includes decoding the compressed MPEG audio data.
0. 56. The method of
0. 57. The method of
0. 58. The method of
converting at least one of the first and second types of digital audio data to analog signal.
0. 59. The method of
wherein the processing step processes the vocal data.
0. 60. The method of
0. 62. The computer readable storage medium of
0. 63. The computer readable storage medium of
0. 64. The computer readable storage medium of
0. 65. The computer readable storage medium of
0. 66. The computer readable storage medium of
0. 67. The computer readable storage medium of
0. 68. The computer readable storage medium of
0. 69. The computer readable storage medium of
0. 70. The computer readable storage medium of
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According to an embodiment, the present invention provides a system for reproducing a digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and the data units of digital audio data corresponding to at least two of: 1) a first type of digital audio data, and 2) a second type of digital audio data which includes at least one content different from the first type of digital audio data; each data unit of digital audio data including attribute information, which has: a) first information for indicating a coding mode of the digital audio data, and b) second information, different than the first information, for identifying the data unit as one of the first type of digital audio data or the second type of digital audio data, wherein the data units of digital video data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two digital audio data, the system comprising: a demodulator configured to demodulate the digital video data and the digital audio data to restore an original data; a data processor configured to receive the digital video data and the digital audio data, demodulated by the demodulator, process the digital video data and at least one of first and second types of digital audio data, the data processor including a system time clock, a memory configured to store the digital video data and the first and second types of digital audio data, a video presentation part configured to receive the system time clock to control a presentation timing of the digital video data, and an audio presentation part configured to receive the system time clock to control a presentation timing of the first or second types of digital audio data; and a controller, coupled to the data processor, configured to control the data processor to process the digital video data and at least one of the first and second types of the digital audio data identified by the second information.
According to another embodiment, the present invention provides a system for processing a digital data, comprising: a receiving circuit configured to receive the digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and digital audio data corresponding to at least two of: 1) a first type of digital audio data, and 2) a second type of digital audio data which includes at least one content different from the first type of digital audio data; each digital audio data being specified by attribute information, which has: a) first information for indicating the digital audio data, and b) second information, different than the first information, for identifying one of the first type of digital audio data or the second type of digital audio data, wherein the digital data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two digital audio data; a demodulator configured to demodulate the digital video data and the digital audio data to restore an original data; a data storage configured to store the digital video data and the at least two digital audio data; a data processing circuit configured to receive the digital video data and at least one of first and second types of digital audio data from the data storage, and process the digital video data and at least one of first and second types of digital audio data, the data processing circuit including a presentation part including a video presentation part and an audio presentation part, the video presentation part configured to receive the system time clock to control a presentation timing of the digital video data and the audio presentation part configured to receive the system time clock to control a presentation timing of the first or second types of digital audio data; and a controller, coupled to the data processing circuit, configured to control the data processing circuit to process the digital video data and at least one of the first and second types of the digital audio data identified by the second information.
According to another embodiment, the present invention provides a method of reproducing a digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and the data units of digital audio data corresponding to at least two of: 1) a first type of digital audio data, and 2) a second type of digital audio data which includes at least one content different from the first type of digital audio data; each data unit of digital audio data including attribute information, which has: a) first information for indicating a coding mode of the digital audio data, and b) second information, different than the first information, for identifying the data unit as one of the first type of digital audio data or the second type of digital audio data, wherein the data units of digital video data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two digital audio data, the method comprising: demodulating the digital video data and the digital audio data to restore an original data; receiving the digital video data and the digital audio data, demodulated by the demodulating step and processing the digital video data and at least one of first and second types of digital audio data; and controlling a presentation timing of the digital video data and a presentation timing of the first or second types of digital audio data in response to a system time clock, the at least one of the first and second types of the digital audio data identified by the second information.
According to another embodiment, the present invention provides a method of processing a digital data, comprising: receiving the digital data, the digital data including a video data and an audio data, the video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, and digital audio data corresponding to at least two of: 1) a first type of digital audio data, and 2) a second type of digital audio data which includes at least one content different from the first type of digital audio data; each digital audio data being specified by attribute information, which has: a) first information for indicating the digital audio data, and b) second information, different than the first information, for identifying one of the first type of digital audio data or the second type of digital audio data, wherein the digital data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two types of digital audio data; demodulating the digital video data and the digital audio data to restore an original data; storing the digital video data and the at least two digital audio data; processing the digital video data and at least one of first and second types of digital audio data; and controlling a presentation timing of the digital video data and a presentation timing of the first or second types of digital audio data in response to a system time clock, the at least one of the first and second types of the digital audio data identified by the second information.
According to another embodiment, the present invention provides a computer readable storage medium on which digital audio data and digital video data are recorded, he video data and the audio data being composed of data units, respectively, the data units of digital audio data being multiplexed with data units of digital video data, the digital audio data comprising data units corresponding to at least two of: 1) a first type of digital audio data; and 2) a second type of digital audio data which includes at least one content different from the first type of digital audio data; each data unit of digital audio data including attribute information, which has: a) first information indicating a coding mode of the digital audio data, b) second information, different than the first information, for identifying the first type of digital audio data or the second type of digital audio data, and wherein the second information is used for separating the data units of the first type from the data units of the second type stored in a memory and selectively outputting audio signal corresponding to the data units of the first or second types, and wherein at least one of data unit of digital video data or digital audio data includes a time information including a reference time information for controlling a presentation timing of the digital video data and a presentation timing of the first or second types of digital audio data, the reference time information being used for generating a system time clock and the system time clock being used for synchronizing the presentation timing of digital video and the presentation timing of digital audio data, and a presentation time information for defining the presentation timing of the digital audio data and/or the first and second types of digital audio data, and wherein the digital video data includes a mode information for identifying a coding mode of the digital video data, and the digital video data is associated with the at least two types of digital audio data.
This invention is to be explained in detail hereinafter, referring to the attached drawings.
A subheader in accordance with this invention is shown in FIG. 4. To distinguish audio data Aa, containing both vocal sound and accompaniment sound, and audio data Ab, containing only accompaniment data, there is provided subheader information in an audio packet, the subheader includes coding information encoded therein with a distinguishing value applied thereto.
The coding information is, included into a subheader of each sector at data encoding as a distinguishing value, standardized as $0 F in case of MPEG video, and $7 F in case of MPEG audio, wherein new coding information (for example 3F) is added to use for a distinguishing signal for the audio data sector Aa, having both vocal sound and accompaniment sound, and the audio data sector Ab having only accompaniment sound.
Interleaving of MPEG video and MPEG audio sectors is as shown in FIG. 5. The interleaving of video data and audio data sectors, in general has 4 to 5 consecutive video sectors V with one audio sector A added thereto, where coding information is used to distinguish a sector containing the encoded Aa and Ab.
Since the increase of buffer size due to the newly added audio sectors Aa and Ab is infinitesimal compared to the image data, it can be ignored.
That is, the karaoke CD format in accordance with this invention includes a CD format divided into video sectors and audio sectors, and the audio sectors are further divided into a part Aa for recording both accompaniment sound and vocal sound at the same time and a part Ab for recording accompaniment sound only, and the audio sectors are further provided to record coding information for distinguishing between audio data stored in the two parts.
As shown in
The control part 30 controls the entire system according to the signal applied through a key matrix 80.
The demodulation part 40 includes a first demodulator 41 for carrying out EFM demodulation from the CD format provided to distinguish a part Aa for recording accompaniment sound and vocal sound at the same time, and a part Ab for recording accompaniment sound only, where the part is under the control of the control part 30, and a second demodulator 42 for demodulating signals recorded in interleaved sectors for a CD-ROM from the signal received from the first demodulator 41 and applying the second demodulated signal to the audio processing part 70 under the control of the control part 30, thereby demodulating the signal read in from the CD format provided to distinguish a part Aa, for recording accompaniment sound and vocal sound at the same time, and a part Ab, for recording accompaniment sound only, under the control of the control part 30.
The audio signal processing part 70 includes a CPU 71 for separating audio data and time data from the signal received from the second demodulator 42 under the control of the control part 30, a STC (System Time Clock) part 77 for generating a synchronizing signal using time information received from the CPU 71, a memory 72 for storing the audio data received from the CPU 71, an MPEG audio decoder 73 for decoding the MPEG audio data stored in the memory 72, a demultiplexer 74 for separating data received form the MPEG audio decoder 73 into data corresponding to accompaniment sound and vocal sound and data corresponding to accompaniment sound and outputting the separated data under the control of the CPU 71, a first audio presentation part 75 for comparing the PTS (Presentation Time Stamp) in the data corresponding to the accompaniment sound received from the demultiplexer 74 to the signal received from the STC 77 to control presentation time of the data, and a second audio presentation part 76 for comparing the PTS (Presentation Time Stamp) in the data corresponding to accompaniment sound and vocal sound received from the demultiplexer 74 to the signal received from the STC 77 to control presentation time of the data, thereby processing the audio signal using signals received from the demodulation part 40 to separate the data into data corresponding to a first data containing accompaniment sound only, and outputting the separate data.
The switch 50 selects one of the data corresponding to the accompaniment sound and vocal sound, or to only the accompaniment sound received from the first and the second audio presentation parts 75 and 76 of the audio signal processing part 70 and transmits the selected data under the control of the control part 30.
The D/A converter 60 converts the data received from the switch 50 under the control of the control part 30.
The system and operation for processing a video signal is the same as for a conventional karaoke CD system.
Operation of the device for controlling a karaoke CD audio signal in accordance with this invention as described above is to be explained hereinafter.
The encoded karaoke-CD data having coding information applied thereto is added with a distinguishing value and has EFM signals demodulated through the first demodulation part 41 which is a EFM/CIRC (Cross Interleave Read Solomon Code) and errors of the CD are corrected. The interleaved data at encoding is demodulated through the second demodulation part 42 which is a CD-ROM decoder, and is separated into audio, video, and time data in the CPU 71.
In the instant, of audio data, the demultiplexing signal coming in at the reading in of the coding information is applied to the demultiplexer 74 for operation of the demultiplexer 74.
Of the data demultiplexed in the CPU 71, the MPEG audio data is stored in the memory 72 temporarily, has the compression restored through the MPEG audio decoder 73, and is transmitted. The demodulated audio data received from the MPEG audio decoder 73 is separated into audio data carrying accompaniment sound only and audio data carrying accompaniment sound and vocal sound through the demultiplexer 74, and applied to the first audio data presentation part 75 and the second audio presentation part 76 respectively under the control of the CPU 71.
The audio demultiplexing signal received from the CPU 71 controls the first audio presentation part 75 to compare the received audio data Ab, carrying accompaniment sound only out of the audio signal applied thereto, to a PTS to control the presentation time and controls the second audio presentation part 76 to compare the received audio data Aa, carrying voice, i.e., vocal sound and accompaniment sound out of the audio signal applied thereto to a PTS to control the presentation time. The audio data received from the first and the second audio presentation parts 75 and 76 is applied to the D/A converter 60 through a switching operation of the switch 50 under the control of the control part 30, where it is converted in the D/A converter 60 and output to a speaker.
In this instant, the switch 50 is operated under the control of the control part 30 which is operated according to the key signal applied through the key matrix 80.
Operation of a karaoke CD audio system is to be explained hereinafter, referring to FIG. 7.
First, a subheader and packet header are read 100, and demultiplexing is carried out to separate into an audio demultiplexing signal and a MPEG audio signal 101. The separated MPEG audio signal is decoded to separate into audio signals containing accompaniment sound only, and audio signals containing both vocal sound and accompaniment sound using the audio demultiplexing signal 102, and the PTS of each packet is read to synchronize and transmit signals 103.
The MPEG audio format, as shown in
As has been explained, this invention for a karaoke CD system increases the enjoyment of karaoke by reproducing audio data containing a player's voice, i.e., vocal sound and accompaniment sound, and audio data containing accompaniment sound selectively, which permits stereophony sound corresponding to the CD sound.
Although the invention has been described in conjunction with specific embodiments, it is evident that many alternatives and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, the invention is intended to embrace all of the alternatives and variations that fall within the spirit and scope of the appended claims.
| Patent | Priority | Assignee | Title |
| 10462530, | Sep 26 2000 | OPENTV, INC. | Systems and methods for providing a multi-perspective video display |
| 10869102, | Sep 26 2000 | OPENTV, INC. | Systems and methods for providing a multi-perspective video display |
| 9525839, | Sep 26 2000 | OPENTV, INC. | Systems and methods for providing a multi-perspective video display |
| Patent | Priority | Assignee | Title |
| 4757393, | Jan 25 1982 | Discovision Associates | Multiple variable rate audio message playback |
| 5126981, | Jun 28 1989 | Samsung Electronics Co., Ltd. | Mixed simulcast circuit |
| 5177728, | Mar 07 1989 | Pioneer Electronic Corporation | Disc player for playing different types of discs which automatically identifies the type of a currently loaded disc |
| 5257253, | Mar 07 1989 | Pioneer Electronic Corporation | Laser vision disc with digital sound (LDD) disc player for reproducing analog audio signals mixed with digital audio signals |
| 5289288, | Jul 20 1990 | MTI Associates | Method and apparatus for encoding a video signal having multi-language capabilities |
| 5359463, | Jun 19 1989 | Sony Corporation | Record/reproduce apparatus having means for switching automatically between different types of audio |
| 5475499, | Mar 08 1985 | Canon Kabushiki Kaisha | Recording/reproducing apparatus where the video signal indicates the location of a randomly recorded correspondence audio signal |
| 5497241, | Oct 29 1993 | WARNER BROS HOME ENTERTAINMENT INC | System and method for controlling display of motion picture subtitles in a selected language during play of a software carrier |
| 5555098, | Dec 05 1991 | KODAK ALARIS INC | Method and apparatus for providing multiple programmed audio/still image presentations from a digital disc image player |
| 5850500, | Jun 28 1995 | Kabushiki Kaisha Toshiba | Recording medium comprising a plurality of different languages which are selectable independently of each other |
| 5933398, | Jul 05 1991 | Sony Corporation | Apparatus for reproducing recording medium with synthesis method and default value and method therefor |
| 6535467, | Sep 17 1993 | LG ELECTRONICS, INC | Apparatus and method for processing audio signals recorded on a medium |
| EP710491, | |||
| JP1232573, | |||
| JP2235260, | |||
| JP2296413, | |||
| JP3128586, | |||
| JP4265569, | |||
| JP512831, | |||
| JP5236009, | |||
| JP7152391, | |||
| WO139836, | |||
| WO9313626, |
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