Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04N
PICTORIAL COMMUNICATION, e.g. TELEVISION
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21/00
Selective content distribution, e.g. interactive television or video on demand [VOD]
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H04N21/40
Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
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H04N21/43
Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
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H04N21/439
Processing of audio elementary streams
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H04N21/4394
involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
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