IPC Subgroup
H04N 9/82 the individual colour picture signal components being recorded simultaneously only
Introduced: January 1985
Last revised: January 2006
Full Title
Details of colour television systems > Processing of colour television signals in connection with recording > Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback > the individual colour picture signal components being recorded simultaneously only
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
3 direct subcodes
Child Classifications
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- H04N 9/825 the luminance and chrominance signals being recorded in separate channels
- H04N 9/83 the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
- H04N 9/85 the recorded brightness signal occupying a frequency band totally overlapping the frequency band of the recorded chrominance signal, e.g. frequency interleaving
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