CPC Subgroup
H04N 25/60 Noise processing, e.g. detecting, correcting, reducing or removing noise
Full Title
Circuitry of solid-state image sensors [SSIS]; Control thereof > Noise processing, e.g. detecting, correcting, reducing or removing noise
9 direct subcodes
Child Classifications
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- H04N 25/61 the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4"
- H04N 25/616 involving a correlated sampling function, e.g. correlated double sampling [CDS] or triple sampling
- H04N 25/617 for reducing electromagnetic interference, e.g. clocking noise
- H04N 25/618 for random or high-frequency noise
- H04N 25/62 Detection or reduction of noise due to excess charges produced by the exposure, e.g. smear, blooming, ghost image, crosstalk or leakage between pixels
- H04N 25/63 applied to dark current
- H04N 25/65 applied to reset noise, e.g. KTC noise related to CMOS structures by techniques other than CDS
- H04N 25/67 applied to fixed-pattern noise, e.g. non-uniformity of response
- H04N 25/68 applied to defects
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