IPC Main Group
H04N 21/00 Selective content distribution, e.g. interactive television or video on demand [VOD]
Introduced: January 2011
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
Additional Content
Glossary
Additional data Non-streaming, non-audio or -video information, e.g. metadata, content descriptors, URLs of interest in connection with the audio or video content Client clients Device located at the user-end, interacting with a server to request, receive and process video content Server Servers Host system dedicated to the provision of video content STB Set-top-box User users Person who views video content VOD Video On Demand
Limiting references
Real-time bi-directional transmission of motion video data
Related Keywords
video STREAM(ING); video STREAM multiplexing; video STREAM encryption or decryptioninteractive televisionVIDEO distributionVIDEO on demandVIDEO streaming; VIDEO stream multiplexing; VIDEO stream encryption or decryption
4 direct subcodes
Child Classifications
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- H04N 21/2 Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N 21/4 Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
- H04N 21/6 Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client; Communication details between server and client
- H04N 21/8 Generation or processing of content or additional data by content creator independently of the distribution process; Content
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 97,396
- HUAWEI TECHNOLOGIES COMPANY CN 96,502
- SAMSUNG ELECTRONICS COMPANY KR 86,981
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
- HUAWEI TECHNOLOGIES COMPANY 55,349
- LG ELECTRONICS KR 53,649
- CANON 33,341
- SONY CORPORATION JP 32,761
- ZTE CORPORATION CN 32,274
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327