| US 7,346,580 B2 | ||
| Method and system of preventing unauthorized rerecording of multimedia content | ||
| Michael G. Lisanke, Boynton Beach, Fla. (US); Kenneth L. Milsted, Boynton Beach, Fla. (US); Stefan Nusser, Mountain View, Calif. (US); Bruce A. Tantlinger, Boynton Beach, Fla. (US); and George W. Wilhelm, Jr., Endwell, N.Y. (US) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Aug. 23, 2001, as Appl. No. 9/938,401. | ||
| Application 09/938401 is a continuation in part of application No. 09/376102, filed on Aug. 17, 1999, granted, now 6,611,812. | ||
| Application 09/376102 is a continuation in part of application No. 09/177096, filed on Oct. 22, 1998, granted, now 6,389,538. | ||
| Application 09/177096 is a continuation in part of application No. 09/133519, filed on Aug. 13, 1998, granted, now 6,226,618. | ||
| Prior Publication US 2002/0107803 A1, Aug. 08, 2002 | ||
| Int. Cl. G06Q 99/00 (2006.01) | ||
| U.S. Cl. 705—50 [709/225; 709/201; 709/231; 709/250; 705/1; 705/51] | 6 Claims |
| 1. A method on an end-user device to prevent an unauthorized recording of multimedia content as a result of rendering at least
part of the multimedia content, the method comprising:
accessing encrypted multimedia content intended for playing on the end-user device using multimedia output devices and/or
pods of the end-user device after decryption of the multimedia content;
prior to decryption of the encrypted multimedia content, blocking access to multimedia content input devices and/or ports
of the end-user device, the blocking being accomplished by opening all multimedia content input devices and/or ports of the
end-user device that can receive any part of a multimedia content, to prevent use of such multimedia content input devices
and/or ports, thereby preventing re-recording of decrypted multimedia content by the end-user device;
decrypting at least part of the encrypted multimedia content; and
subsequent to decryption, and while access to all such multimedia content input devices and/or ports is blocked, rendering
the at least part of the multimedia content.
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