Copy protection using detailed copy control information

• US 7,412,606 B2
• Filed: 09/13/2005
• Issued: 08/12/2008
• Est. Priority Date: 04/16/1999
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Asano, Tomoyuki, Osawa, Yoshitomo, Hamada, Ichiro, Komuro, Teruyoshi
• Primary Examiner(s): Sheikh; Ayaz
• Assistant Examiner(s): Moorthy; Aravind K
• Application Number:
  US11/224,790
• Publication Number:
  US 20060020829A1
• Time in Patent Office: 1,064 Days
• Field of Search: 713/193
• US Class Current: 713/193
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00768 wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 2220/2529 Mini-discs
• CPC Class Codes: H04L 12/283 Processing of data at an internetworking point of a home automation network
• CPC Class Codes: H04L 12/40104 Security; Encryption; Content protection cryptographic protocols H04L9/00; protocols for network security H04L63/00
• CPC Class Codes: H04L 12/40117 Interconnection of audio or video/imaging devices home automation networks H04L12/2803; bitstream network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04N 2005/91328 the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

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.

Claims

1. A data processing apparatus comprising:

storing means for storing data;

generating means for generating a data packet for transmitting the data;

setting means for setting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet; and

output means for outputting the data packet to another data processing apparatus.

2. A data processing apparatus comprising:

generating means for generating a data packet for transmitting the data;

setting means for setting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet; and

output means for outputting the data packet including the first copy control information and the second copy control information.

3. A data processing apparatus comprising:

generating means for generating a data packet for transmitting the data;

setting means for setting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, formed in larger number of bits than the first copy control information, wherein the first copy control information or the second copy control information is used to process the data packet; and

output means for outputting the data packet including the first copy control information and the second copy control information.

4. A data processing apparatus comprising:

generating means for generating a data packet for transmitting the data;

inputting means for the data including first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet when the data is reproduced; and

controlling means for controlling copy control of the data packet based on the first copy control information and the second copy control information.

5. A data processing apparatus comprising:

generating means for generating a data packet for transmitting the data;

inputting means for inputting the data including first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet; and

controlling means for controlling copy control of the data packet to another data processing apparatus when the data is transmitted from outside.

6. A data processing apparatus comprising:

generating means for generating a data packet for transmitting the data;

inputting means for inputting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, formed in larger number of bits than the first copy control information, wherein the first copy control information or the second copy control information is used to process the data packet; and

controlling means for controlling copying of the data packet based, on the first copy control information and the second copy control information.

7. A data processing method comprising:

storing data in a storage;

generating a data packet for transmitting the data;

setting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet; and

outputting the data packet to another data processing apparatus.

8. A data processing method comprising:

generating a data packet for transmitting the data;

setting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet; and

outputting the data packet including the first copy control information and the second copy control information.

9. A data processing method comprising:

generating a data packet for transmitting the data;

setting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, formed in larger number of bits than the first copy control information, wherein the first copy control information or the second copy control information is used to process the data packet; and

outputting the data packet including the first copy control information and the second copy control information.

10. A data processing method comprising:

generating a data packet for transmitting the data;

inputting data including first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet when the data is reproduced; and

controlling copy control of the data packet based on the first copy control information and the second copy control information.

11. A data processing method comprising:

generating a data packet for transmitting the data;

inputting data including first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, wherein the first copy control information or the second copy control information is used to process the data packet; and

controlling copy control of the data packet to another data processing apparatus when the data is transmitted from outside.

12. A data processing method comprising:

generating a data packet for transmitting the data;

inputting first copy control information indicating copy control information of the data in a header portion of the data packet and second copy control information indicating copy control information of the data, in greater detail than the first copy control information, in a data portion of the data packet, formed in larger number of bits than the first copy control information, wherein the first copy control information or the second copy control information is used to process the data packet; and

controlling copy of the data packet based on the first copy control information and the second copy control information.