Digital video disc, its recording and reproducing methods, and related encoder and decoder using the same
First Claim
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1. A method for recording and reproducing audio-related data to or from a digital video disc, comprising the steps of:
- transmitting at least one musical composition via a digital video disc, together with bonus information relating to said musical composition and an approved interactive data required when a user accesses said bonus information;
receiving an arbitrary interactive data entered by the user accessing said bonus information; and
reproducing the transmitted musical composition regardless of said entered interactive data, and allowing a reproduction of said bonus information only when said entered interactive data agrees with said approved interactive data.
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Abstract
At least one musical composition is transmitted via a digital video disc together with bonus information relating to the musical composition and an approved interactive data required when a user accesses the bonus information. An arbitrary interactive data is entered by the user accessing the bonus information. The transmitted musical composition is reproducible regardless of the entered interactive data. However, a reproduction of the bonus information is allowed only when the entered interactive data agrees with the approved interactive data.
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Citations
36 Claims
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1. A method for recording and reproducing audio-related data to or from a digital video disc, comprising the steps of:
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transmitting at least one musical composition via a digital video disc, together with bonus information relating to said musical composition and an approved interactive data required when a user accesses said bonus information;
receiving an arbitrary interactive data entered by the user accessing said bonus information; and
reproducing the transmitted musical composition regardless of said entered interactive data, and allowing a reproduction of said bonus information only when said entered interactive data agrees with said approved interactive data. - View Dependent Claims (2, 3, 4, 5)
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6. An encoding apparatus for a digital video disc comprising:
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an A/D conversion means for converting audio analog signals of at least one musical composition into a digital form and producing a digital data stream; and
a recording means for recording said digital data stream on a digital video disc together with bonus information relating to said musical composition and an approved interactive data required when a user accesses said bonus information. - View Dependent Claims (7, 8, 9, 10)
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11. A digital video disc comprising:
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a first recording portion for storing a digital data stream obtained by A/D converting audio analog signals of at least one musical composition;
a second recording portion for storing bonus information relating to said musical composition; and
a third recording portion for storing an approved interactive data required when a user accesses said bonus information. - View Dependent Claims (12, 13, 14, 15, 17, 18, 19, 20)
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16. A decoding apparatus for a digital video disc which stores a digital data stream obtained by A/D converting audio analog signals of at least one musical composition, bonus information relating to said musical composition, and an approved interactive data required when a user accesses said bonus information, said decoding apparatus comprising:
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an input means for receiving an arbitrary interactive data entered by the user accessing said bonus information; and
a reproducing means for reproducing said musical composition regardless of said entered interactive data, and allowing a reproduction of said bonus information only when said entered interactive data agrees with said approved interactive data.
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21. A method for recording and reproducing audio-related data to and from a digital video disc comprising the steps of:
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transmitting at least one musical composition via a digital video disc, together with a program for reproducing one of musical composition groups and an approved interactive data required when a user accesses a specific musical composition group;
receiving an arbitrary interactive data entered by the user accessing said specific musical composition group; and
allowing a reproduction of said specific musical composition group only when said entered interactive data agrees with said approved interactive data.
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22. An encoding apparatus for a digital video disc comprising:
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an A/D conversion means for converting audio analog signals of at least one musical composition into a digital form and producing a digital data stream; and
a recording means for recording said digital data stream on a digital video disc together with a program for reproducing one of musical composition groups and an approved interactive data required when a user accesses a specific musical composition group. - View Dependent Claims (26, 27, 28, 29, 30)
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23. A digital video disc comprising:
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a first recording portion for storing a digital data stream obtained by A/D converting audio analog signals of at least one musical composition;
a second recording portion for storing a program for reproducing one of musical composition groups; and
a third recording portion for storing an approved interactive data required when a user accesses a specific musical composition group.
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24. A decoding apparatus for a digital video disc which stores a digital data stream obtained by A/D converting audio analog signals of at least one musical composition, a program for reproducing one of musical composition groups, and an approved interactive data required when a user accesses a specific musical composition group, said decoding apparatus comprising:
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an input means for receiving an arbitrary interactive data entered by said user accessing said specific musical composition group; and
a reproducing means for reproducing said specific musical composition group only when said entered interactive data agrees with said approved interactive data.
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25. An encoding apparatus for a digital video disc comprising:
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an A/D converter for converting audio analog signals of at least one musical composition into a digital form by sampling said audio analog signals at a predetermined sampling frequency and producing a digital data stream;
a signal processing circuit for processing said digital data stream to produce a user data pack;
an encoding circuit for receiving said user data pack together with bonus information relating to said musical composition and an approved interactive data required when a user accesses said bonus information, and producing audio and video data; and
a modulating circuit for modulating said audio and video data according to a modulation procedure suitable for the type of a digital video disc on which said audio and video data are recorded.
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31. A decoding apparatus for a digital video disc which stores a digital data stream obtained by A/D converting audio analog signals of at least one musical composition, bonus information relating to said musical composition, and an approved interactive data required when a user accesses said bonus information, said decoding apparatus comprising:
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a judging means for judging whether or not an arbitrary interactive data entered by the user agrees with said approved interactive data;
a modulation circuit for demodulating received signals in compliance with a demodulation procedure suitable for the digital video disc;
a decoding circuit for separating said demodulated signal into audio and video packing data of said musical composition and said bonus information;
a reproduction control means for reproducing audio and video data of said musical composition from said decoding circuit regardless of said entered interactive data and for allowing a reproduction of said bonus information in response to a judgement result of said judging means only when said entered interactive data agrees with said approved interactive data. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification