Proprietary watermark system for secure digital media and content distribution

• US 20060193492A1
• Filed: 05/02/2006
• Published: 08/31/2006
• Est. Priority Date: 02/21/2001
• Status: Active Grant

• Current Assignee: Igor O. Ivanov, Vsevolod M. Kuzmich
• Original Assignee: Igor O. Ivanov, Vsevolod M. Kuzmich
• Inventors: Ivanov, Igor O., Kuzmich, Vsevolod M.
• Granted Patent: US 7,760,904 B2
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G06T 2201/0051 Embedding of the watermark in the spatial domain
• CPC Class Codes: G06T 2201/0052 Embedding of the watermark in the frequency domain

Abstract

A method of generating a protected digital media content, is provided. According to an embodiment of the present invention, the method includes generating a protected digital media content, comprising: generating a first control signal for use in an authorization signature of digital media content, generating a second control signal for use in a certification of the content owner'"'"'s right, and generating information about the digital media content; and adding the first control signal, the second control signal, and the information to the digital media content to provide a protected content.

Claims

1. A method of generating a protected digital media content, comprising:

generating a first control signal for use in an authorization signature of digital media content, generating a second control signal for use in a certification of the content owner'"'"'s right, and generating information about the digital media content; and

adding the first control signal, the second control signal, and the information to the digital media content to provide a protected content.

2. The method of claim 1, wherein the generating step generates the first control signal using a first key of the content owner.

3. The method of claim 2, wherein the first key is a secret key of the content owner.

4. The method of claim 1, wherein the generating step generates the first control signal based on a symmetric cryptography.

5. The method of claim 1, wherein the generating step generates the second control signal using a second key.

6. The method of claim 5, wherein the second key is a public key of the content owner.

7. The method of claim 1, wherein the information represents content properties.

8. The method of claim 1, further comprising:

transmitting the protected content.

9. The method of claim 8, further comprising:

generating a third control signal for use in a certification of content distributor, and adding the third control signal to the protected content.

10. A method of generating a protected digital media content, comprising:

generating a first control signal for use in an authentication and/or content integrity, and associating the first control signal with digital media content;

generating a second control signal for use in a certification of the content owner'"'"'s right, and associating the second control signal with the digital media content; and

generating information about the digital media content, and associating the information with the digital media content.

11. The method of claim 10, further comprising:

transmitting the digital media content with the associated data.

12. The method of claim 11, further comprising:

generating a third control signal for use in a certification of content distributor, and adding the third control signal to the digital media content.

13. A method of reproducing a digital media content, comprising:

(a) receiving a protected content and an associated control data;

(b) checking an authorization signature of the protected content by using a first control signal;

(c) checking a certification of the protected content owner'"'"'s right by using a second control signal; and

(d) identifying information about the protected content to reproduce the protected content.

14. The method of claim 13, wherein the step (b) further comprises:

(b1) determining if the protected content is legal or illegal as a result of checking step.