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DIFF Subgroup
H04N 13/332

Displays for viewing with the aid of special glasses or head-mounted displays [HMD]

Introduced: January 2018

Full Title

Full titles differ between systems:

IPC:

Stereoscopic video systems; Multi-view video systems; Details thereof > Image reproducers > Displays for viewing with the aid of special glasses or head-mounted displays [HMD]

CPC:

Stereoscopic video systems; Multi-view video systems; Details thereof > Image reproducers (optical systems for producing stereoscopic or other three-dimensional [3D] effects G02B30/00) > Displays for viewing with the aid of special glasses or head-mounted displays [HMD]

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2018.

Child Classifications

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  • H04N 13/334 using spectral multiplexing since 2018 IPC+CPC Available in IPC and CPC
  • H04N 13/337 using polarisation multiplexing since 2018 IPC+CPC Available in IPC and CPC
  • H04N 13/339 using spatial multiplexing (H04N13/337 takes precedence) since 2018 IPC+CPC Available in IPC and CPC
  • H04N 13/341 using temporal multiplexing since 2018 IPC+CPC Available in IPC and CPC
  • H04N 13/344 with head-mounted left-right displays since 2018 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