IP Library › Patent Application 11394958
Patent Application
App. No. 11/394,958

Computer-implemented method and system for perceptual cryptography in file-sharing environments

Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US None
App. No.
11/394,958
Abstract

A computer-implemented method and system for perceptual cryptography in file-sharing environments are disclosed. The method and system include providing access to a quality-degraded version of a content bit-stream, and providing decryption keys for rendering the content bit-stream without quality degradation.

Claims (40)

1 . A method comprising:

providing access to a quality-degraded version of a content bit-stream; and

providing decryption keys for rendering the content bit-stream without quality degradation.

2 . The method as claimed in claim 1 wherein the quality-degraded version of the content bit-stream is degraded to a pre-determined level.

3 . The method as claimed in claim 1 wherein the content bit-stream is a JPEG bit-stream.

4 . The method as claimed in claim 1 wherein the content bit-stream is a JFIF bit-stream.

5 . The method as claimed in claim 1 including accessing a key server to obtain the decryption keys.

6 . The method as claimed in claim 1 including using a plug-in component to obtain the decryption keys.

7 . The method as claimed in claim 1 wherein the decryption keys are bound to a specific physical device.

8 . The method as claimed in claim 1 wherein the decryption keys are bound to a specific physical medium.

9 . The method as claimed in claim 1 wherein the content bit-stream is an MPEG bit-stream.

10 . An article of manufacture embodied as a machine-accessible medium including data that, when accessed by a machine, causes the machine to perform operations comprising:

providing access to a quality-degraded version of a content bit-stream; and

providing decryption keys for rendering the content bit-stream without quality degradation.

11 . The article of manufacture as claimed in claim 10 wherein the quality-degraded version of the content bit-stream is degraded to a pre-determined level.

12 . The article of manufacture as claimed in claim 10 wherein the content bit-stream is a JPEG bit-stream.

13 . The article of manufacture as claimed in claim 10 wherein the content bit-stream is a JFIF bit-stream.

14 . The article of manufacture as claimed in claim 10 including accessing a key server to obtain the decryption keys.

15 . The article of manufacture as claimed in claim 10 including using a plug-in component to obtain the decryption keys.

16 . The article of manufacture as claimed in claim 10 wherein the decryption keys are bound to a specific physical device.

17 . The article of manufacture as claimed in claim 10 wherein the decryption keys are bound to a specific physical medium.

18 . The article of manufacture as claimed in claim 10 wherein the content bit-stream is an MPEG bit-stream.

19 . A system comprising:

an encrypted content repository; and

a server accessible to the encrypted content repository, the server providing at least two levels of access to content in the encrypted content repository, a first access level providing decryption keys for rendering content from the encrypted content repository without quality degradation, a second access level providing access to the encrypted content repository for rendering content from the encrypted content repository with quality degradation.

20 . The system as claimed in claim 19 wherein the decryption keys are bound to a specific physical device.

21 . The system as claimed in claim 19 wherein the content is JPEG content.

22 . The system as claimed in claim 19 wherein the content is MPEG content.

23 . A system comprising:

an encrypted content repository providing access to encrypted content; the encrypted content being renderable with a pre-determined level of quality degradation; and

a server accessible to the encrypted content repository, the server providing decryption keys for rendering encrypted content from the encrypted content repository without quality degradation.

24 . The system as claimed in claim 23 wherein the decryption keys are bound to a specific physical device.

25 . The system as claimed in claim 23 wherein the encrypted content is JPEG content.

26 . The system as claimed in claim 23 wherein the encrypted content is MPEG content.

27 . A system comprising:

an encrypted content repository providing access to encrypted content; the encrypted content being renderable with a predetermined level of quality degradation; and

a plug-in component providing access to decryption keys for rendering encrypted content from the encrypted content repository without quality degradation.

28 . The system as claimed in claim 21 wherein the decryption keys are bound to a specific physical device.

29 . The system as claimed in claim 27 wherein the encrypted content is JPEG content.

30 . The system as claimed in claim 27 wherein the encrypted content is MPEG content.

Assignments (5)
PATENT RELEASE Recorded Jul 24, 2014
From: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
To: ALL MEDIA GUIDE, LLC; APTIV DIGITAL, INC.; GEMSTAR DEVELOPMENT CORPORATION; INDEX SYSTEMS INC.; ROVI CORPORATION; ROVI GUIDES, INC.; ROVI SOLUTIONS CORPORATION; ROVI TECHNOLOGIES CORPORATION; STARSIGHT TELECAST, INC.; TV GUIDE INTERNATIONAL, INC.; UNITED VIDEO PROPERTIES, INC.
Reel/Frame 033396/0001 →
SECURITY INTEREST Recorded Sep 13, 2011
From: APTIV DIGITAL, INC., A DELAWARE CORPORATION; GEMSTAR DEVELOPMENT CORPORATION, A CALIFORNIA CORPORATION; INDEX SYSTEMS INC, A BRITISH VIRGIN ISLANDS COMPANY; ROVI CORPORATION, A DELAWARE CORPORATION; ROVI GUIDES, INC., A DELAWARE CORPORATION; ROVI SOLUTIONS CORPORATION, A DELAWARE CORPORATION; ROVI TECHNOLOGIES CORPORATION, A DELAWARE CORPORATION; STARSIGHT TELECAST, INC., A CALIFORNIA CORPORATION; UNITED VIDEO PROPERTIES, INC., A DELAWARE CORPORATION
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 027039/0168 →
RELEASE OF SECURITY INTEREST Recorded Oct 29, 2010
From: JPMORGAN CHASE BANK, N.A. (A NATIONAL ASSOCIATION)
To: ALL MEDIA GUIDE, LLC; APTIV DIGITAL, INC.; GEMSTAR DEVELOPMENT CORPORATION; INDEX SYSTEMS INC.; ODS PROPERTIES, INC.; ROVI DATA SOLUTIONS, INC. (FORMERLY KNOWN AS TV GUIDE DATA SOLUTIONS, INC.); ROVI GUIDES, INC. (FORMERLY KNOWN AS GEMSTAR-TV GUIDE INTERNATIONAL, INC.); ROVI SOLUTIONS CORPORATION (FORMERLY KNOWN AS MACROVISION CORPORATION); ROVI SOLUTIONS LIMITED (FORMERLY KNOWN AS MACROVISION EUROPE LIMITED); ROVI TECHNOLOGIES CORPORATION; STARSIGHT TELECAST, INC.; TV GUIDE, INC.; TV GUIDE ONLINE, LLC; UNITED VIDEO PROPERTIES, INC.
Reel/Frame 025222/0731 →
SECURITY AGREEMENT Recorded May 15, 2008
From: APTIV DIGITAL, INC.; GEMSTAR DEVELOPMENT CORPORATION; GEMSTAR-TV GUIDE INTERNATIONAL, INC.; INDEX SYSTEMS INC; MACROVISION CORPORATION; ODS PROPERTIES, INC.; STARSIGHT TELECAST, INC.; TV GUIDE ONLINE, LLC; UNITED VIDEO PROPERTIES, INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 020986/0074 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 31, 2006
From: TORRUBIA, ANDRES M.
To: MACROVISION CORPORATION
Reel/Frame 017722/0299 →