Method for recognizing audio-visual data in transmission networks, in particular internet
First Claim
1. Method for preventing the receipt by an unauthorized receiver of digital audio/video data transmitted over a digital transmission network, comprisingstoring and analyzing in a server, arranged upstream from a receiver, all or part of said data directed to said receiver for detecting a predetermined bit pattern of an audio/video format, wherein said bit pattern comprises a synchronizing word of an audio/video format and said analyzing comprises verifying the distance between sync-words from the frame lengths of a sequence of data, according to said audio/video format,if said predetermined bit pattern is determined to be present, performing, wholly within the server, a verification of the legality of the transmission of said data, anddelivering said data to the receiver over the digital transmission network or blocking the delivery of the data to the receiver over the digital transmission network as a function of said verification.
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Accused Products
Abstract
A method of recognizing an audio and/or visual format in a digital transmission network such as the Internet wherein formats include a quasi-continuous or divided in packets sequence of data, at least part of the sequence of data is analyzed for the presence of one or more bit patterns, and a notice is given in response to recognition of a predetermined format in an analyzed bit pattern.
24 Citations
38 Claims
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1. Method for preventing the receipt by an unauthorized receiver of digital audio/video data transmitted over a digital transmission network, comprising
storing and analyzing in a server, arranged upstream from a receiver, all or part of said data directed to said receiver for detecting a predetermined bit pattern of an audio/video format, wherein said bit pattern comprises a synchronizing word of an audio/video format and said analyzing comprises verifying the distance between sync-words from the frame lengths of a sequence of data, according to said audio/video format, if said predetermined bit pattern is determined to be present, performing, wholly within the server, a verification of the legality of the transmission of said data, and delivering said data to the receiver over the digital transmission network or blocking the delivery of the data to the receiver over the digital transmission network as a function of said verification.
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19. Method for preventing the receipt by an unauthorized receiver of digital audio/video data transmitted over a digital transmission network, comprising
storing and analyzing in a server, arranged upstream from a receiver, all or part of said data directed to said receiver for detecting a predetermined bit pattern of an audio/video format, wherein a synchronizing word in said data is analyzed for the presence of a bit pattern indicative of whether the content information in the digital data is prohibited to the receiver, if said predetermined bit pattern is determined to be present, performing, wholly within the server, a verification of the legality of the transmission of said data, and delivering said data to the receiver over the digital transmission network or blocking the delivery of the data to the receiver over the digital transmission network as a function of said verification.
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38. Method for preventing the receipt by an unauthorized receiver of digital audio/video data transmitted over a digital transmission network, comprising
storing and analyzing in a server, arranged upstream from a receiver, all or part of said data directed to said receiver for detecting a predetermined bit pattern of an audio/video format, if said predetermined bit pattern is determined to be present, performing, wholly within the server, a verification of the legality of the transmission of said data, and delivering said data to the receiver over the digital transmission network or blocking the delivery of the data to the receiver over the digital transmission network as a function of said verification, wherein at a router of different Internet servers prepared lists are continuously compared one to the other and/or updated or exchanged.
Specification