CPC Subgroup
H04N 5/92 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
Full Title
Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Television signal recording > Television signal processing therefor > Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
5 direct subcodes
Child Classifications
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- H04N 5/921 by recording or reproducing the baseband signal
- H04N 5/923 using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
- H04N 5/926 by pulse code modulation (H04N5/919 takes precedence)
- H04N 5/928 the sound signal being pulse code modulated and recorded in time division multiplex with the modulated video signal
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