END-USER SYSTEM OF PREVENTING UNAUTHORIZED RERECORDING OF MULTIMEDIA CONTENT

• US 20100008500A1
• Filed: 04/07/2008
• Published: 01/14/2010
• Est. Priority Date: 08/13/1998
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Wilhelm, George W. JR., LISANKE, MICHAEL G., Nusser, Stefan, Milsted, Kenneth L., Tantlinger, Bruce A.
• Granted Patent: US 7,962,413 B2
• Time in Patent Office: Days
• US Class Current: 380/201
• CPC Class Codes: G06F 21/1013 to locations
• CPC Class Codes: G06F 2211/007 Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
• CPC Class Codes: G06F 2221/2107 File encryption
• CPC Class Codes: G06F 2221/2135 Metering
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G06T 2201/0064 for copy protection or copy management, e.g. CGMS, copy only once, one-time copy
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00884 involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 2463/102 applying security measure for e-commerce data processing systems or methods, specially adapted for e-commerce G06Q30/00
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04W 4/02 Services making use of location information

Abstract

An end-user system for the blocking of recording digital content at during the rendering of encrypted digital multimedia files. Before the process of rendering of encrypted digital multimedia can be started all rendered media stream during playback are opened to ensure that this multimedia content is not recorded. This blocks the usage of the multimedia interfaces including devices and/or ports that can be used to store un-encrypted content that has been decrypted for the purposes of playing or rendering. The method also includes an exception, which allows recording with permission from the present invention.

Claims

1. An end-user system comprising:

a plurality of multimedia interfaces, wherein at least one of the multimedia interfaces is capable of recording at least part of digital multimedia content;

an interface to a storage media for storing encrypted digital multimedia content to be rendered using the end-user system using multimedia output devices and/or output ports of the end-user device after decryption of the encrypted multimedia content; and

a multimedia player for rendering the encrypted digital content, whereby prior to decryption of the encrypted multimedia content, blocking access to all multimedia interfaces by opening all multimedia interfaces that can receive any part of the encrypted multimedia content which has been decrypted, and while access to all such multimedia interfaces is blocked so as to block each of the multimedia interfaces from recording of the digital content which has been decrypted, rendering the at least part of the multimedia content which has been decrypted which has been decrypted.

2. The end-user system according to claim 1, wherein the each of the multimedia interfaces is independently opened.

3. The end-user system according to claim 1, wherein the each of the multimedia interfaces are independently closed.

4. The end-user system according to claim 1, further comprising:

means for determining a recording quality for each of the multimedia interfaces input devices and/or input ports of the end-user system and in response to the recording quality being below a given quality level then not opening each of the multimedia interfaces input devices and/or input ports of the end-user system that are being below the given quality level prior to rendering of the encrypted digital content.

5. The end-user system according to claim 1, further comprising:

means for determining if each of the plurality of the multimedia interfaces are authorized by the digital content to be to be opened;

means for returning an error message to an end user in response to each of the multimedia interfaces not being authorized to be opened; and

means for stopping the rendering of the at least part of the multimedia content.

6. The end-user system according to claim 1, further comprising:

means for completing the rendering of the at least a part of the multimedia content encrypted multimedia content which has been decrypted;

means for closing all the multimedia interfaces input devices and/or input ports of the end-user system that were used for rendering; and

means for closing all multimedia interfaces input devices and/or input ports of the end-user system that were opened during rendering.

7. The end-user system according to claim 6, wherein the means for determining if each of the multimedia interfaces input devices and/or input ports of the end-user system are authorized to be opened includes authorizing a modem connection to be opened.