H04N 21/835 Generation of protective data, e.g. certificates
Introduced: January 2011
Full Title
Full titles differ between systems:
Selective content distribution, e.g. interactive television or video on demand [VOD] > Generation or processing of content or additional data by content creator independently of the distribution process; Content > Generation or processing of protective or descriptive data associated with content; Content structuring > Generation of protective data, e.g. certificates
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
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2011.
Child Classifications
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- H04N 21/8352 involving content or source identification data, e.g. Unique Material Identifier [UMID] since 2011 IPC+CPC Available in IPC and CPC
- H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed since 2011 +1 CPC IPC+CPC Available in IPC and CPC