H04N 9/802 involving processing of the sound signal (H04N9/806, H04N9/835 take precedence)
Introduced: January 1995
Title
Titles differ between systems:
IPC: involving processing of the sound signal
CPC: involving processing of the sound signal (H04N9/806, H04N9/835 take precedence)
Full Title
Full titles differ between systems:
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 > involving processing of the sound signal
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 > involving processing of the sound signal (H04N9/806, H04N9/835 take precedence)
No child classifications to compare. This is a leaf node in both 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