CPC Subgroup
H04N 5/44 Receiver circuitry (H04N5/14 takes precedence)
Full Title
Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Receiver circuitry (H04N5/14 takes precedence)
9 direct subcodes
Child Classifications
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- H04N 5/445 for displaying additional information (H04N5/50 takes precedence)
- H04N 5/455 Demodulation-circuits
- H04N 5/46 for receiving on more than one standard at will (deflecting circuits of multi-standard receivers H04N3/27)
- H04N 5/50 Tuning indicators; Automatic tuning control
- H04N 5/52 Automatic gain control
- H04N 5/57 Control of contrast or brightness
- H04N 5/60 for the sound signals
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