PICTORIAL COMMUNICATION, e.g. TELEVISION

Introduced: September 1968

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.

Of 17 combined children, 12 exist in both systems.

4 codes are CPC-only extensions, 1 exist only in IPC.

Note: 4 CPC extensions are marked as secondary classification only.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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H04N 1/00 Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof +17 CPC IPC+CPC Available in IPC and CPC
H04N 101/00 Still video cameras since 1995 IPC only IPC only
H04N 11/00 Colour television systems (details H04N9/00) since 1985 IPC+CPC Available in IPC and CPC
H04N 13/00 Stereoscopic video systems; Multi-view video systems; Details thereof since 1985 +1 CPC IPC+CPC Available in IPC and CPC
H04N 17/00 Diagnosis, testing or measuring for television systems or their details since 1985 +4 CPC IPC+CPC Available in IPC and CPC
H04N 19/00 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals since 2014 IPC+CPC Available in IPC and CPC
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 ) since 2011 IPC+CPC Available in IPC and CPC
H04N 2101/00 Still video cameras 2nd only CPC only CPC only
H04N 2201/00 Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof 2nd only +9 CPC CPC only CPC only
H04N 2209/00 Details of colour television systems 2nd only +1 CPC CPC only CPC only
H04N 2213/00 Details of stereoscopic systems 2nd only +7 CPC CPC only CPC only
H04N 23/00 Cameras or camera modules comprising electronic image sensors; Control thereof since 2023 IPC+CPC Available in IPC and CPC
H04N 25/00 Circuitry of solid-state image sensors [SSIS]; Control thereof since 2023 IPC+CPC Available in IPC and CPC
H04N 3/00 Scanning details of television systems; Combination thereof with generation of supply voltages IPC+CPC Available in IPC and CPC
H04N 5/00 Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) IPC+CPC Available in IPC and CPC
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) +2 CPC IPC+CPC Available in IPC and CPC
H04N 9/00 Details of colour television systems IPC+CPC Available in IPC and CPC