H04N 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.
Additional Content IPC
Glossary
CCD Charge-coupled device, that is, a device made up of semiconductors arranged in such a way that the electric charge output of one semiconductor charges an adjacent one. MPEG Motion Picture Experts Group; a family of standards used for coding audio-visual information in a digital compressed format. Picture signal generator Picture signal generators Circuits or arrangements receiving as input an image of a scene and delivering as output an electric signal that contains all the information required to reproduce the image of the scene. Picture reproducer Picture reproducers Circuits or arrangements receiving as input an electric signal characteristic of an image of a scene and producing as output a visual display of that image.
Application references
Instruments for performing medical examinations of the interior of cavities or tubes of the body combined with television appliances Arrangements of television sets in vehicles; Arrangements of controls thereof Mounting of cameras operative during drive of a vehicle; Arrangements of control thereof relative to the vehicle Arrangements of cameras in aircraft Controlling or regulating single-crystal growth by pulling from a melt, using television detectors Inspecting textile materials by television means Scanning a visible indication of a measured value and reproducing this indication at a remote place, e.g. on the screen of a cathode-ray tube Burglar, theft, or intruder alarms using television cameras Structural combination of reactor core or moderator structure with television camera
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 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 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 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
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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