Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H04N 9/87

Regeneration of colour television signals (H04N9/80 takes precedence)

Introduced: January 1985

Title

Titles differ between systems:

IPC: Regeneration of colour television signals

CPC: Regeneration of colour television signals (H04N9/80 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Details of colour television systems > Processing of colour television signals in connection with recording > Regeneration of colour television signals

CPC:

Details of colour television systems > Processing of colour television signals in connection with recording > Regeneration of colour television signals (H04N9/80 takes precedence)

Of 8 combined children, 5 exist in both systems.

3 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

Navigate with arrow keys, Enter to open

  • H04N 9/8707 CPC only CPC only
  • H04N 9/8715 CPC only CPC only
  • H04N 9/8722 CPC only CPC only
  • H04N 9/873 for restoring the colour component sequence of the reproduced signal since 1995 IPC+CPC Available in IPC and CPC
  • H04N 9/877 by assembling picture element blocks in an intermediate memory since 1995 IPC+CPC Available in IPC and CPC
  • H04N 9/898 using frequency multiplication of the reproduced colour signal carrier with another auxiliary reproduced signal, e.g. a pilot signal carrier since 1995 IPC+CPC Available in IPC and CPC

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