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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H04N 21/8456

Full Title

Selective content distribution, e.g. interactive television or video on demand [VOD] (real-time bi-directional transmission of motion video data H04N7/14 ) > Generation or processing of content or additional data by content creator independently of the distribution process; Content per se > Generation or processing of protective or descriptive data associated with content; Content structuring > Structuring of content, e.g. decomposing content into time segments