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IPC Subgroup
G11B 20/1

Digital recording or reproducing

Introduced: January 1985

Last revised: January 2006

Full Title

Signal processing not specific to the method of recording or reproducing; Circuits therefor > Digital recording or reproducing

Classification Context

Section:
PHYSICS
Class:
INFORMATION STORAGE
Subclass:
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Filing statistics

IPC G11B 20/1 belongs to the parent subclass G11B, which recorded 61,937 patent applications worldwide between 2013 and 2023. Annual filings declined from 8,033 in 2013 to 4,203 in 2023 (-48%). The most active applicants in class G11 are MICRON TECHNOLOGY (10,574 applications), SK HYNIX (9,138 applications) and SAMSUNG ELECTRONICS COMPANY (9,004 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

digital RECORDING

4 direct subcodes

Child Classifications

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  • G11B 20/12 Formatting, e.g. arrangement of data block or words on the record carriers
  • G11B 20/14 using self-clocking codes
  • G11B 20/16 using non self-clocking codes, i.e. the clock signals being either recorded in a separate clocking track or in a combination of several information tracks
  • G11B 20/18 Error detection or correction; Testing

Top Applicants

Top 10 applicants by patent filingsfor class G11, 2013–2023, worldwide · Source: EPO PATSTAT

  1. MICRON TECHNOLOGY US 10,574
  2. SK HYNIX KR 9,138
  3. SAMSUNG ELECTRONICS COMPANY KR 9,004
  4. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
  5. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
  6. INTEL CORPORATION US 2,952
  7. SANDISK TECHNOLOGIES US 2,905
  8. WESTERN DIGITAL TECHNOLOGIES US 2,630
  9. TOSHIBA CORPORATION JP 2,593
  10. SEAGATE TECHNOLOGY US 2,472