CPC Subclass Not Allocatable
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION
Description
H04N covers the transmission, reception, and processing of visual information in electronic communication systems. This includes television technology, video broadcasting, image transmission, and related signal processing methods. The classification encompasses analog and digital video systems, display technologies, video codecs, scanning standards, color reproduction, and synchronization mechanisms. Adjacent classes such as H04M (telephonic communication) and H04L (digital communication) are excluded, though H04N includes video telephony when the pictorial aspect is primary.
16 direct subcodes
Child Classifications
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- H04N 1/00 Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N 11/00 Colour television systems (details H04N9/00)
- H04N 13/00 Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N 17/00 Diagnosis, testing or measuring for television systems or their details
- H04N 19/00 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N 21/00 Selective content distribution, e.g. interactive television or video on demand [VOD] (real-time bi-directional transmission of motion video data H04N7/14 )
- H04N 2101/00 Still video cameras
- H04N 2201/00 Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N 2209/00 Details of colour television systems
- H04N 2213/00 Details of stereoscopic systems
- H04N 23/00 Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N 25/00 Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N 3/00 Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N 5/00 Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00)
- H04N 7/00 Television systems (details H04N3/00, H04N5/00; methods or arrangements, for coding, decoding, compressing or decompressing digital video signals H04N19/00; selective content distribution H04N21/00)
- H04N 9/00 Details of colour television systems
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- HUAWEI TECHNOLOGIES COMPANY CN 101,476
- QUALCOMM US 101,139
- SAMSUNG ELECTRONICS COMPANY KR 96,655
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
- LG ELECTRONICS KR 55,253
- HUAWEI TECHNOLOGIES COMPANY 54,181
- SONY CORPORATION JP 35,309
- ZTE CORPORATION CN 32,950
- INTEL CORPORATION US 27,533
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498