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PCE
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DIFF Subgroup
G10L 25/51

for comparison or discrimination

Introduced: January 2013

Full Title

Full titles differ between systems:

IPC:

Speech or voice analysis techniques not restricted to a single one of groups > specially adapted for particular use > for comparison or discrimination

CPC:

Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 (muting semiconductor-based amplifiers when some special characteristics of a signal are sensed by a speech detector, e.g. sensing when no signal is present, H03G3/34) > specially adapted for particular use > for comparison or discrimination

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2013.

Child Classifications

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  • G10L 25/54 for retrieval since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/57 for processing of video signals since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/60 for measuring the quality of voice signals since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/63 for estimating an emotional state since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/66 for extracting parameters related to health condition (detecting or measuring for diagnostic purposes A61B5/00) since 2013 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G10,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 5,218
  2. GOOGLE US 4,644
  3. FRAUNHOFER DE 4,601
  4. SONY CORPORATION JP 2,380
  5. HUAWEI TECHNOLOGIES COMPANY CN 2,179
  6. YAMAHA CORPORATION 2,120
  7. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 1,974
  8. MICROSOFT TECHNOLOGY LICENSING US 1,916
  9. AMAZON TECHNOLOGIES US 1,866
  10. DOLBY LABORATORIES LICENSING CORPORATION US 1,843

Top Applicants (CPC)

Class G10,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 6,277
  2. GOOGLE US 5,429
  3. FRAUNHOFER DE 4,984
  4. SONY CORPORATION JP 2,808
  5. HUAWEI TECHNOLOGIES COMPANY CN 2,577
  6. MICROSOFT TECHNOLOGY LICENSING US 2,382
  7. DOLBY LABORATORIES LICENSING CORPORATION US 2,123
  8. QUALCOMM US 2,117
  9. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,049
  10. AMAZON TECHNOLOGIES US 1,924