Copy protection using detailed copy control information
First Claim
1. A data processing system comprising:
- a first data processing apparatus having a setting means that sets first copy-control information showing the copy control state of data in a header section of a data packet and second copy control information showing the copy control state of said data set in greater detail than said first copy control information in a data section of said data packet and an output means that outputs said first copy control information, said second copy control information and said data; and
a second data processing apparatus having an input means that inputs the first copy control information showing the copy control state of data in said header section and the second copy control information showing the copy control state of said data set in greater detail than said first copy control information and said data and a controlling means of that determines the copy control state of said data based on said first copy control information and second copy control information inputted by said input means and controls the of said data according to the determination result.
1 Assignment
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Accused Products
Abstract
Based on the detailed reproduction control information defining the reproduction control state of data to be transmitted, the CPU 12 of the data transmission apparatus creates a simplified reproduction control information roughly defining the reproduction control state of the data, stores the simplified reproduction control information of the data in the packet header of a data packet carrying the data, stores the detailed reproduction control information in the data, and transmits the simplified reproduction control information and the detailed reproduction control information as well as the data to the data receiving apparatus 20 through the transmission channel 30 from the input-output interface 16. The CPU 22 of the data receiving apparatus 20 analyses the reproduction control state of the data contained in the data packet based on the simplified reproduction information and the detailed reproduction information contained in the data packet, and controls the reproduction of the data by the action of the media access part 26 according to the analysis result.
83 Citations
24 Claims
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1. A data processing system comprising:
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a first data processing apparatus having a setting means that sets first copy-control information showing the copy control state of data in a header section of a data packet and second copy control information showing the copy control state of said data set in greater detail than said first copy control information in a data section of said data packet and an output means that outputs said first copy control information, said second copy control information and said data; and a second data processing apparatus having an input means that inputs the first copy control information showing the copy control state of data in said header section and the second copy control information showing the copy control state of said data set in greater detail than said first copy control information and said data and a controlling means of that determines the copy control state of said data based on said first copy control information and second copy control information inputted by said input means and controls the of said data according to the determination result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A data processing method comprising the steps of:
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creating second copy control information defining more roughly the copy control state than first copy control information based on the first copy control information defining the copy control state of data to be transmitted; storing said second copy control information of said data in packet header of a data packet carrying said data and storing said first copy control information in said data portion of said data packet; and transmitting simultaneously said first copy control information and second copy control information as well as said data. - View Dependent Claims (11)
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12. A data processing apparatus comprising:
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a setting means that sets first copy control information showing the copy control state of data in a header section of a data packet and second copy control information showing said data set in greater detail than said first copy control information in a data portion of said data packet; and an output means that outputs said first copy control information, said second copy control means and said data. - View Dependent Claims (13, 14, 15)
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16. A data processing apparatus comprising:
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an input means that inputs first copy control information showing the copy control state of data, second copy control information showing the copy control state of said data set in greater detail than said first copy control information and said data; and a copy control means that determines the copy control state of said data based on said first copy control information and said second copy-control information inputted by said input means and controls the reproduction of said data according to the determination result; whereby the first copy control information is included in a header section of a data packet and the second copy control information is included in a data section of said data packet. - View Dependent Claims (17, 18, 19)
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20. A data processing apparatus comprising:
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an input means that inputs first copy control information showing the copy control state of data, second copy control information defining the copy control state of said data in greater detail than said first copy control information and said data; and a copy control means that determines the copy control state of said data based only on said first copy control information among said first copy-control information and said second copy control information inputted by said input means and controls the reproduction of said data according to the determination result; whereby the first copy control information is included in a header section of a data packet and the second copy control information is included in a data section of said data packet. - View Dependent Claims (21, 22, 23)
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24. A program storage device readable by a machine, tangibly embodying an information signal processed by a data processing apparatus that records data, said information signal comprising:
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first copy control information showing copy control state of data; second copy control information showing the copy control state of said data set in greater detail than said first copy control information; and said data proper; whereby the first copy control information is included in a header section of a data packet and the second copy control information is included in a data section of said data packet.
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Specification