Method and apparatus for creating and rendering an advertisement

• US 20050033700A1
• Filed: 08/04/2003
• Published: 02/10/2005
• Est. Priority Date: 08/04/2003
• Status: Abandoned Application

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Vogler, Dean H., Kuhlman, Douglas A.
• Application Number:
  US10/634,092
• Publication Number:
  US 20050033700A1
• Time in Patent Office: Days
• US Class Current: 705/57
• CPC Class Codes: G06Q 30/02 Marketing; Price estimation or determination; Fundraising
• CPC Class Codes: G06Q 30/0248 Avoiding fraud
• CPC Class Codes: G06Q 30/0272 Period of advertisement exposure
• CPC Class Codes: G06Q 30/0277 Online advertisement
• CPC Class Codes: H04M 1/72442 for playing music files
• CPC Class Codes: H04N 21/2541 Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/6543 for forcing some client operations, e.g. recording remote booting in general G06F9/4416
• CPC Class Codes: H04N 21/812 involving advertisement data advertising per se G06Q30/02

Abstract

A method and apparatus for linking an advertisement and digital content are provided herein. The linkage is such that any attempt to render the desired digital content must first render the advertisement before the digital content can be accessed. The procedure is typically to prepend the advertisement to the digital content and to use a hash of the advertisement as a Content Encryption Key (CEK) which is needed to decrypt the digital content.

Claims

1. A method for rendering encrypted digital content, the method comprising the steps of:

obtaining data comprising an advertisement and encrypted digital content;

rendering the advertisement to obtain a content encryption key;

utilizing the content encryption key to decrypt the encrypted digital content; and

rendering the digital content.

2. The method of claim 1 wherein the step of obtaining data comprises the step of obtaining data comprising an advertisement, wherein the advertisement comprises information taken from the group consisting of a public service announcement, a legal warning, a commercial.

3. The method of claim 1 further comprising the step of insuring that the advertisement is completely rendered prior to rendering the digital content.

4. The method of claim 1 wherein the step of rendering the advertisement to obtain the content encryption key comprises the step of hashing the advertisement to obtain the content encryption key.

5. The method of claim 1 wherein the step of rendering the advertisement to obtain the content encryption key comprises the step of using a keyed hash algorithm on the advertisement to obtain the content encryption key.

6. The method of claim 1 wherein the step of rendering the advertisement to obtain the content encryption key comprises the step of hashing the advertisement and using a public key to obtain the content encryption key.

7. The method of claim 1 further comprising the steps of:

receiving a DRM rules file; and

analyzing the DRM rules file to determine a length of the advertisement.

8. A method for preparing an advertisement message, the method comprising the steps of:

creating an advertisement; and

determining a content encryption key (CEK) based on the advertisement, utilized to decrypt encrypted digital content

9. The method of claim 8 further comprising the steps of:

prepending the advertisement message containing the CEK to the encrypted digital content; and

transmitting the advertisement message containing the CEK and the digital content.

10. The method of claim 8 wherein the step of creating the advertisement comprises the step of creating an advertisement taken from the group consisting of a public service announcement, a legal warning, a commercial.

11. The method of claim 8 further comprising the steps of:

creating a DRM rules file comprising a length of the advertisement; and

transmitting the DRM rules file along with the advertisement.

12. The method of claim 8 further comprising the steps of:

appending a “

stop hashing”

value to the advertisement; and

transmitting the advertisement with the appanded “

stop hashing”

value;

13. An apparatus comprising:

a DRM module obtaining data comprising an advertisement and encrypted digital content, rendering the advertisement to obtain a content encryption key, and utilizing the content encryption key to decrypt the encrypted digital content; and

a rendering module rendering the digital content.

14. The apparatus of claim 13 wherein the advertisement comprises information taken from the group consisting of a public service announcement, a legal warning, a commercial.

15. The apparatus of claim 13 wherein the DRM module hashes the advertisement to obtain the content encryption key.

16. The apparatus of claim 15 wherein the DRM module uses a a keyed hash algorithm on the advertisement to obtain the content encryption key.

17. An apparatus comprising:

digital content;

an advertisement; and

logic circuitry for obtaining a content encryption key from the advertisement and encrypting the digital content with a content encryption key.

18. The apparatus of claim 17 wherein the advertisement is hashed to become the content encryption key.