Copy protection system

摘要

A method of modifying the output of an output device is provided. A first code, associated with a first recipient party, is received and used to generate, within the output device, a second code, the second code containing encoded data identifying the first recipient party and instructions for activating an additional functionality of the output device. The additional functionality is activated in accordance with the instructions contained in the second code. The output of the output device is modified according to data encoded in the second code, to encode a third code in the output of the output device, the third code including an ID code associated with the first recipient party.

主权项

1. A method of modifying the output of an output device, the method comprising:
retrieving a first code, associated with a first recipient party; generating within the output device, using the first code, a second code, the second code containing encoded data identifying the first recipient party and instructions for activating an additional functionality of the output device; activating the additional functionality in accordance with the instructions contained in the second code; and modifying the output of the output device according to the data encoded in the second code, to encode a third code in the output of the output device, the third code including an ID code associated with the first recipient party, wherein the output of the output device is a video signal and the additional functionality activated by the first code is copy protection of the video signal, the second code containing instructions on how copy protection should be applied to the output device's output.