Multimedia data delivery and playback system with multi-level content and privacy protection

• US 6,668,246 B1
• Filed: 03/24/1999
• Issued: 12/23/2003
• Est. Priority Date: 03/24/1999
• Status: Expired due to Term

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: Intel Corporation
• Inventors: Liu, Robert G., Yeo, Boon-Lock, Yeung, Minerva Ming-Yee, Macy, William W., Holliman, Matthew J.
• Primary Examiner(s): Cosimano, Edward R.
• Application Number:
  US09/275,905
• Time in Patent Office: 1,735 Days
• Field of Search: 380/200, 380/201, 380/211, 705/1, 705/50, 705/51, 705/52, 705/54, 705/57, 713/150
• US Class Current: 705/57
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]

Abstract

A content distribution system comprising a server platform and a client platform. The server platform includes a memory unit to store digital content and access control logic to activate content protection mechanisms that provide multiple levels of access protection to the digital content. In communication with the server platform, the client platform plays back segments of the digital content at one of a plurality of quality levels.

Claims

1. A content distribution system comprising:

a server platform including a memory unit to store digital content and access control logic to activate a plurality of content protection mechanisms to provide multiple levels of access protection to the digital content, a first content protection mechanism includes data scrambling of the digital content and a second content protection mechanism includes visual or perceptual scrambling of the digital content so that a quality of the digital content is intentionally degraded to a level substantially inferior to an original quality of the digital content; and

a client platform in communication with the server platform, the client platform to playback segments of the digital content at one of a plurality of quality levels.

2. The content distribution system of claim 1, wherein the client platform includes a chipset having a secure platform signature acting as an identifier to distinguish the client platform from other platforms in communication with the server platform.

3. The content distribution system of claim 1, wherein the client platform includes a processor having a serial number acting as an identifier when provided to the server platform to distinguish the client platform from other platforms in communication with the server platform.

4. The content distribution system of claim 3, wherein the serial number is unique.

5. The content distribution system of claim 1, wherein a third content protection mechanism includes robust watermark insertion by embedding meta-data into the digital content.

6. The content distribution system of claim 5, wherein the server platform includes a compression unit and a decompression unit to assist in performing the robust watermark insertion in a spatial domain by decompressing the digital content before embedding the meta-data and compressing the digital content thereafter.

7. The content distribution system of claim 5, wherein a fourth content protection mechanism includes fast watermark insertion by embedding data identifying a targeted recipient into the digital content.

8. A server platform comprising:

a memory unit to store digital content; and

access control logic to activate (i) a first protection mechanism to provide multiple levels of access protection to the digital content, the first content protection mechanism includes data scrambling of the digital content to enhance protection of the digital content, and (ii) a second content protection mechanism to visually or perceptually scramble the digital content so that a quality of the digital content is intentionally degraded to a level substantially inferior to an original quality of the digital content.

9. The server platform of claim 8, wherein the first and second content protection mechanisms are performed based on at least one key generated from an incoming client identifier.

10. The server platform of claim 8, wherein the at least one key used by the first and second content protection mechanisms is further generated based on incoming client-based information provided with a client identifier.

11. The server platform of claim 8, wherein the incoming client-based information includes an identification of a targeted recipient of the digital content.

12. The server platform of claim 8, wherein the access control logic further activates a third content protection mechanism to increase protection of the digital content through fast watermark insertion by embedding data identifying a targeted recipient into the digital content.

13. The server platform of claim 8 further comprising circuitry to formulate an identifier based on at least one request from a client platform.

14. A client platform comprising:

a processor having a serial number acting as an identifier to distinguish the client platform from other platforms during communication with a remotely located platform; and

a communication device coupled to the processor, the communication device providing communications with the remotely located platform to receive incoming digital content; and

access control logic to activate a first content protection mechanism to decrypt the incoming digital content and a second content protection mechanism to visually or perceptually descramble the digital content in an attempt to enhance a quality of the digital content during playback.

15. The client platform of claim 14 further comprising a content player to playback the digital content.

16. The client platform of claim 15 further comprising logic to activate a first content protection mechanism to encrypt the digital content and a second content protection mechanism to visually or perceptually scramble the digital content in an attempt to degrade a quality of the digital content before propagation to the content player.

17. A computer program embodied in a computer-readable medium and executable by a server platform for protecting content for unauthorized observation or manipulation, the computer program comprising:

a data scrambling function to encrypt the digital signal prior to transmission;

a visual scrambling function to intentionally degrade a visual quality of the digital signal;

a fast watermarking fiction to embed data to identify a targeted recipient of the digital signal without effecting the visual quality of the digital signal.

18. The computer program of claim 17, wherein the visual scrambling function operates prior to the data scrambling function.

19. The computer program of claim 17, wherein the visual scrambling function operates simultaneously with the data scrambling function.

20. The computer program of claim 17, wherein the first watermarking function operates prior to the visual scrambling function.

21. A method comprising:

receiving information to identify a destination of digital content;

performing an authentication check using the information in order to determine that the destination is authorized to receive the digital content;

performing visual scrambling operations to intentionally degrade a perceived quality of the digital content;

performing data scrambling operations to encrypt the digital content; and

transmitting the digital content to the destination.

22. The method of claim 21, wherein the information to identify the destination includes a serial number of a processor implemented in a client platform being the destination.

23. The method of claim 21, wherein the information to identify the destination includes an identification of a targeted recipient requesting the digital content.

24. The method of claim 21, wherein prior to transmitting the digital content, the method comprises performing fast watermark insertion operations to embed data within the digital content to identify a targeted recipient of the digital content.