CPC Subgroup
H04N 25/671 for non-uniformity detection or correction
Full Title
Circuitry of solid-state image sensors [SSIS]; Control thereof > Noise processing, e.g. detecting, correcting, reducing or removing noise > applied to fixed-pattern noise, e.g. non-uniformity of response > for non-uniformity detection or correction
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H04N 25/672 between adjacent sensors or output registers for reading a single image
- H04N 25/673 by using reference sources
- H04N 25/677 for reducing the column or line fixed pattern noise
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