Generation of protective data, e.g. certificates

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 > Generation of protective data, e.g. certificates

Child Classifications

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• H04N 21/8352 involving content or source identification data, e.g. Unique Material Identifier [UMID]
• H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed
• H04N 21/8358 involving watermark