Nagrastar LLC

Michael Augustin Busch

Gregory Duval

Systems and methods are disclosed for analyzing different media to determine if the media originated from the same source. A two-part analysis is provided. During the first part, target data streams are analyzed to determine a template for the data stream or file, based upon the encoder used to encode the media transmitted in the data stream or stored in a file. After generating templates for the different streams, the templates are compared to determine which streams have matching templates. The second part of the analysis includes monitoring streams with matching templates to identify the same piece of media content in each of the streams. Upon identifying the same content, the content of each stream is synchronized and then compared to determine if the compared pieces of content were generated using the same encoder.

Systems and methods for analyzing streamed media to determine common source encoders

Systems and methods are disclosed for performing anti-piracy countermeasures in order to prevent unauthorized access of protected content. A conditional access system may be modified to include a counter. The counter is incremented every time the conditional access system receives a request that is a potential indication of pirate activity. The counter may also be decremented every time the conditional access system receives a request indicative of legitimate activity. If the conditional access system receives a management message containing a key required to access content keys, the conditional access system cheeks the counter. If the counter is below a threshold value, the conditional access system obtains the key. However, if the counter is above the threshold value, the conditional access system disregards the key contained in the management message, thereby losing access to protected content.

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Highlands Ranch, CO, United States of America

Michael Augustin Busch