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IPC Subgroup
H04N 25/6

Noise processing, e.g. detecting, correcting, reducing or removing noise

Introduced: January 2023

Full Title

Circuitry of solid-state image sensors [SSIS]; Control thereof > Noise processing, e.g. detecting, correcting, reducing or removing noise

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
PICTORIAL COMMUNICATION, e.g. TELEVISION

9 direct subcodes

Child Classifications

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  • 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 25/65 applied to reset noise, e.g. KTC noise related to CMOS structures by techniques other than CDS

Top Applicants

Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. QUALCOMM US 97,396
  2. HUAWEI TECHNOLOGIES COMPANY CN 96,502
  3. SAMSUNG ELECTRONICS COMPANY KR 86,981
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
  5. HUAWEI TECHNOLOGIES COMPANY 55,349
  6. LG ELECTRONICS KR 53,649
  7. CANON 33,341
  8. SONY CORPORATION JP 32,761
  9. ZTE CORPORATION CN 32,274
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327