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US 5,963,909 AGranted
Multi-media copy management system
AssigneeSolana Technology Development Corporation
InventorsRobert L. Warren, Chong U. Lee, Kamran Moallemi
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AssigneeSolana Technology Development Corporation
InventorsRobert L. Warren, Chong U. Lee, Kamran Moallemi
Estimating the term…
Reproduction of a multi-media data signal which is stored on a source media or distributed via a communication network is controlled by inserting master tag data and control tag data into the data signal. A player/recorder inserts an additional generation of control tag information each time a copy of the media is made. If the number of generations of the control tag information is above a threshold value, reproduction of the data signal may be inhibited. For example, if the data signal comprises video data, the player/recorder may only allow playing of the video signal on a display but will not allow recording. The playing and recording of associated signals, such as an audio signal which accompanies a video signal, may also be controlled. The master tag data and control tag data may be provided as spread spectrum signals which are spectrally shaped and power-adjusted according to the data signal to render them imperceptible in the data signal. With encrypted frames of multi-media data, encryption keys may be carried in a key layer with the encrypted data signal or another data signal for use in decryption on a frame by frame basis.
Apparatus for controlling the reproduction of a multi-media data signal using master tag information embedded therein, and which is adapted to carry control tag information embedded therein, comprising:
A method for controlling the reproduction of a multi-media data signal that carries master tag information embedded therein, and which is adapted to carry control tag information embedded therein, comprising the steps of:
Apparatus for controlling the reproduction of a primary multi-media data signal using an auxiliary multi-media data signal, where master tag information is embedded in at least one of said primary and auxiliary multi-media data signals, and at least one of said primary and auxiliary multi-media data signals is adapted to carry control tag information embedded therein, comprising:
A method for controlling the reproduction of a primary multi-media data signal using an auxiliary multi-media data signal, where master tag information is embedded in at least one of said primary and auxiliary multi-media data signals, and at least one of said primary and auxiliary multi-media data signals is adapted to carry control tag information embedded therein, comprising the steps of:
Dependencies are inferred from the claim text.