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DIFF Subgroup
H04N 5/953

by using an analogue memory, e.g. a CCD shift register, the delay of which is controlled by a voltage controlled oscillator

Introduced: January 1995

Title

Titles differ between systems:

IPC: by using an analogue memory, e.g. a CCD-shift register, the delay of which is controlled by a voltage controlled oscillator

CPC: by using an analogue memory, e.g. a CCD shift register, the delay of which is controlled by a voltage controlled oscillator

Full Title

Full titles differ between systems:

IPC:

Details of television systems > Television signal recording > Television signal processing therefor > Regeneration of the television signal or of selected parts thereof > Time-base error compensation > by using an analogue memory, e.g. a CCD-shift register, the delay of which is controlled by a voltage controlled oscillator

CPC:

Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Television signal recording > Television signal processing therefor > Regeneration of the television signal or of selected parts thereof > Time-base error compensation > by using an analogue memory, e.g. a CCD shift register, the delay of which is controlled by a voltage controlled oscillator

Additional Content IPC

Time-base error compensation using an analog memory, e.g. a CCD-shift register, the delay of which is controlled by a voltage controlled oscillator, in the regeneration of colour television signals

No child classifications to compare. This is a leaf node in both 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