Information processing apparatus, method, and program

• US 20070074020A1
• Filed: 08/31/2006
• Published: 03/29/2007
• Est. Priority Date: 09/06/2005
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nishimura, Takuya
• Granted Patent: US 8,108,688 B2
• Time in Patent Office: Days
• US Class Current: 713/168
• CPC Class Codes: G06F 16/48 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually

Abstract

Disclosed herein is an information processing apparatus that processes content data supplied in a format that has at least a metadata region in which metadata of a content is stored, the apparatus including: acquisition means configured to acquire the content data in the aforementioned format and decryption information for decrypting the metadata that is encrypted, the content data containing the encrypted metadata stored in the metadata region; decryption means configured to decrypt the encrypted metadata stored in the metadata region using the decryption information; and supplementary service providing means configured to provide a supplementary service related to the content based on the metadata decrypted by the decryption means.

Claims

1. An information processing apparatus that processes content data supplied in a format that has at least a metadata region in which metadata of a content is stored, the apparatus comprising:

acquisition means for acquiring the content data in said format and decryption information for decrypting the metadata that is encrypted, the content data containing the encrypted metadata stored in the metadata region;

decryption means for decrypting the encrypted metadata stored in the metadata region using the decryption information; and

supplementary service providing means for providing a supplementary service related to the content based on the metadata decrypted by said decryption means.

2. The information processing apparatus according to claim 1, the apparatus further comprising authentication means for performing an authentication process in connection with a server that supplies the content data, wherein

said acquisition means acquires the decryption information by receiving the decryption information from the server after the authentication process is completed.

3. The information processing apparatus according to claim 1, wherein,

the decrypted metadata is either data representing a genre of the content or data expressing an impression of the content, and

the supplementary service provided by said supplementary service providing means is recommending, to a user who likes the content, another optimum content.

4. The information processing apparatus according to claim 1, wherein,

said format is a M3 (MPEG (Moving Picture Experts Group)-1 Audio Layer-3), and

the metadata region is an extended tag or a frame within an ID3 tag.

5. The information processing apparatus according to claim 1, wherein the metadata is written in a language that has adopted a description logic.

6. The information processing apparatus according to claim 5, wherein the language is an ontology language OWL.

7. The information processing apparatus according to claim 1, wherein,

the content is audio data or video data, and

the information processing apparatus is a reproducing apparatus that reproduces the content.

8. An information processing method employed by an information processing apparatus that processes content data supplied in a format that has at least a metadata region in which metadata of a content is stored, the method comprising the steps of:

acquiring the content data in said format and decryption information for decrypting the metadata that is encrypted, the content data containing the encrypted metadata stored in the metadata region;

decrypting the encrypted metadata stored in the metadata region using the decryption information; and

providing a supplementary service related to the content based on the metadata decrypted.

9. A program that causes a computer to process content data supplied in a format that has at least a metadata region in which metadata of a content is stored, the program causing the computer to perform the steps of:

acquiring the content data in said format and decryption information for decrypting the metadata that is encrypted, the content data containing the encrypted metadata stored in the metadata region;

decrypting the encrypted metadata stored in the metadata region using the decryption information; and

providing a supplementary service related to the content based on the metadata decrypted.

10. An information processing apparatus that processes content data supplied in a format that has at least a metadata region in which metadata of a content is stored, the apparatus comprising:

an acquisition unit configured to acquire the content data in said format and decryption information for decrypting the metadata that is encrypted, the content data containing the encrypted metadata stored in the metadata region;

a decryptor configured to decrypt the encrypted metadata stored in the metadata region using the decryption information; and

a supplementary service providing unit configured to provide a supplementary service related to the content based on the metadata decrypted by said decryptor.