INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, RECORDING MEDIUM, AND PROGRAM

• US 20090074182A1
• Filed: 11/12/2008
• Published: 03/19/2009
• Est. Priority Date: 04/15/2002
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nagano, Motohiko, Kawamoto, Yoji, Ezura, Yuichi, Ishiguro, Ryuji
• Granted Patent: US 8,042,192 B2
• Time in Patent Office: Days
• US Class Current: 380/44
• CPC Class Codes: G06F 21/1077 Recurrent authorisation
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• 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 20/00152 involving a password
• CPC Class Codes: G11B 20/00181 using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00224 wherein the key is obtained from a remote server
• CPC Class Codes: G11B 20/00507 wherein consecutive physical data units of the record carrier are encrypted with separate encryption keys, e.g. the key changes on a cluster or sector basis
• CPC Class Codes: G11B 20/00731 involving a digital rights management system for enforcing a usage restriction
• CPC Class Codes: G11B 20/0084 wherein the usage restriction can be expressed as a specific time or date
• CPC Class Codes: G11B 20/00855 involving a step of exchanging information with a remote server
• CPC Class Codes: H04L 2209/603 Digital right managament [DRM]
• CPC Class Codes: H04L 9/0836 using tree structure or hierarchical structure
• CPC Class Codes: H04L 9/0891 Revocation or update of secret information, e.g. encryption key update or rekeying

Abstract

The present invention relates to an information processing apparatus, an information processing method, a recording medium, and a program for importing and exporting a content with information missing controlled. A CPU extracts a sound track contained in the content in step S301, and converts a format of the extracted sound track into a format compatible with a memory stick in step S302. The CPU generates a predetermined file from data contained in the content and excluding the sound track in step S304. In step S306, the CPU attaches reference information of the sound track to the file. In step S307, the CPU controls the writing of the sound track in the converted format and the file to the memory stick. The present invention is applied to clients of a DRM system.

Claims

1-5. -5. (canceled)

6. An information processing apparatus for receiving content data from a storage medium, comprising:

acquisition means for acquiring the content data from the storage medium,

converting means for converting the content data acquired by the acquisition means into data in a predetermined format;

key generating means for generating a content key;

encrypting means for encrypting the content data in the predetermined format with the content key;

content generating means for generating content which comprises the content key, the content data encrypted by the content key, and content attribute information; and

attaching means for attaching, to the content, information for associating a right of use required to use the content with the content.

7. An information processing apparatus according to claim 6, further comprising storage means for storing the right of use required to use the input content.

12. The information processing apparatus according to claim 6, wherein the content attribute information includes a content ID.

13. The information processing apparatus according to claim 6, wherein the content attribute information includes a record company ID.

14. The information processing apparatus according to claim 6, wherein the content attribute information includes an artist ID.

8. An information processing method for receiving content data from a storage medium, comprising:

acquiring the content data from the storage medium;

converting the content data acquired in the acquisition step into data in a predetermined format;

generating a content key;

encrypting the content data in the predetermined format with the content key;

generating content which comprises the content key, the content data encrypted by the content key, and content attribute information; and

attaching, to the content, information for associating a right of use required to use the content with the content.

9. A recording medium storing a computer readable program for causing a computer to perform a method for processing information for receiving content data from a storage medium, the method comprising:

acquiring the content data from the storage medium,

converting the content data acquired in the acquisition step into data in a predetermined format;

generating a content key;

encrypting the content data in the predetermined format with the content key;

generating content which comprises the content key, the content data encrypted by the content key, and content attribute information; and

an attaching step for attaching, to the content, information for associating a right of use required to use the content with the content.

10-11. -11. (canceled)