Copy protection using detailed copy control information

• US 20060020829A1
• Filed: 09/13/2005
• Published: 01/26/2006
• Est. Priority Date: 04/16/1999
• Status: Active Grant

• Current Assignee: Ichiro Hamada, Teruyoshi Komuro, Tomoyuki Asano, Yoshitomo Osawa
• Original Assignee: Ichiro Hamada, Teruyoshi Komuro, Tomoyuki Asano, Yoshitomo Osawa
• Inventors: Asano, Tomoyuki, Osawa, Yoshitomo, Hamada, Ichiro, Komuro, Teruyoshi
• Granted Patent: US 7,412,606 B2
• Time in Patent Office: Days
• 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

1-24. -24. (canceled)

25. A data processing apparatus comprising:

storing means for storing data in a storage;

setting means for setting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data to the data read from the storage, the first copy control information being referred prior to the second copy control information; and

output means for outputting the data to another storage.

26. A data processing apparatus comprising:

setting means for setting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data to the data, the first copy control information being referred prior to the second copy control information; and

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

27. A data processing apparatus comprising:

setting means for setting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data formed in larger number of bits than the first copy control information; and

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

28. A data processing apparatus comprising:

inputting means for data including first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data, the first copy control information being referred prior to the second copy control information when the data is reproduced; and

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

29. A data processing apparatus comprising:

inputting means for inputting data including first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data to the data, the first copy control information being referred prior to the second copy control information; and

controlling means for controlling copy control of the data to a storage when the data is transmitted from outside.

30. A data processing apparatus comprising:

inputting means for inputting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data formed in larger number of bits than the first copy control information; and

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

31. A data processing method comprising:

storing data in a storage;

setting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data to the data read from the storage, the first copy control information being referred prior to the second copy control information; and

outputting the data to another storage.

32. A data processing method comprising:

setting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data to the data, the first copy control information being referred prior to the second copy control information; and

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

33. A data processing method comprising:

setting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data formed in larger number of bits than the first copy control information; and

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

34. A data processing method comprising:

inputting data including first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data, the first copy control information being referred prior to the second copy control information when the data is reproduced; and

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

35. A data processing method comprising:

inputting data including first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data to the data, the first copy control information being referred prior to the second copy control information; and

controlling copy control of the data to a storage when the data is transmitted from outside.

36. A data processing method comprising:

inputting first copy control information indicating copy control information of data and second copy control information indicating copy control information of the data formed in larger number of bits than the first copy control information; and

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

37. An information signal processed by a data processing apparatus, the information signal comprising:

first copy control information indicating copy control of data;

second copy control information indicating copy control of data; and

the data,

wherein the first copy control information is referred by the data processing apparatus prior to the second copy control information for controlling copy of the data.