CPC Subgroup
H04N 21/475 End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
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 ) > Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof > End-user applications > End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
5 direct subcodes
Child Classifications
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