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DIFF Subgroup
H04N 19/90

using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals

Introduced: January 2014

Title

Titles differ between systems:

IPC: using coding techniques not provided for in groups , e.g. fractals

CPC: using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals

Full Title

Full titles differ between systems:

IPC:

Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using coding techniques not provided for in groups , e.g. fractals

CPC:

Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals

Of 7 combined children, 6 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2014.

Child Classifications

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  • H04N 19/91 Entropy coding, e.g. variable length coding [VLC] or arithmetic coding since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/93 Run-length coding since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/94 Vector quantisation since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/96 Tree coding, e.g. quad-tree coding since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/97 Matching pursuit coding since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/98 Adaptive-dynamic-range coding [ADRC] since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/99 CPC only CPC only

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

  1. HUAWEI TECHNOLOGIES COMPANY CN 101,476
  2. QUALCOMM US 101,139
  3. SAMSUNG ELECTRONICS COMPANY KR 96,655
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
  5. LG ELECTRONICS KR 55,253
  6. HUAWEI TECHNOLOGIES COMPANY 54,181
  7. SONY CORPORATION JP 35,309
  8. ZTE CORPORATION CN 32,950
  9. INTEL CORPORATION US 27,533
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498