CPC Subgroup
H04N 19/90 using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
Full Title
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
7 direct subcodes
Child Classifications
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- H04N 19/91 Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
- H04N 19/93 Run-length coding
- H04N 19/94 Vector quantisation
- H04N 19/96 Tree coding, e.g. quad-tree coding
- H04N 19/97 Matching pursuit coding
- H04N 19/98 Adaptive-dynamic-range coding [ADRC]
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