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H04N 19/30

using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence)

Introduced: January 2014

Title

Titles differ between systems:

IPC: using hierarchical techniques, e.g. scalability

CPC: using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using hierarchical techniques, e.g. scalability

CPC:

Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence)

Additional Content IPC

Glossary

Temporal scalability Scalability in terms of frame rate, meaning that a given bit stream includes different sub-streams each with a different frame rate or sub-streams that, when combined, increase the output frame rate. Spatial scalability Scalability in terms of spatial video sampling rate or resolution (e.g. quantisation step size, pixel bit depth), meaning that a given bit stream includes different sub-streams each with a different frame size or resolution or sub-streams that, when combined, increase the output frame size or resolution.

Limiting references

Transform coding using sub-band based transform, e.g. wavelets

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 19/31 in the temporal domain since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/33 in the spatial domain since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/34 Scalability techniques involving progressive bit-plane based encoding of the enhancement layer, e.g. fine granular scalability [FGS] since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/36 Scalability techniques involving formatting the layers as a function of picture distortion after decoding, e.g. signal-to-noise [SNR] scalability since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/37 with arrangements for assigning different transmission priorities to video input data or to video coded data since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/39 involving multiple description coding [MDC], i.e. with separate layers being structured as independently decodable descriptions of input picture data since 2014 IPC+CPC Available in IPC and CPC
  • H04N 19/395 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