Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H04N 19/65

using error resilience

Introduced: January 2014

Full Title

Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using error resilience

Additional Content IPC

Resynchronisation marker resynchronisation markers A special Variable Length Coding binary word inserted to allow re-initialisation of VLC decoding, which is forced by the marker. Reversible Variable Length Coding reversible variable length code reversible variable length codes RVLC VLC allowing backward decoding of the stream, i.e. decoding of a VLC coded binary string starting from the end to the beginning.

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

IPC defines codes here since 2014.

Child Classifications

Navigate with arrow keys, Enter to open

  • H04N 19/66 involving data partitioning, i.e. separation of data into packets or partitions according to importance since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/67 involving unequal error protection [UEP], i.e. providing protection according to the importance of the data since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/68 involving the insertion of resynchronisation markers into the bitstream since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/69 involving reversible variable length codes [RVLC] since 2014 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