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IPC Subgroup
H04N 7/52

Systems for transmission of a pulse code modulated with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal

Introduced: January 1995

Last revised: January 2011

Full Title

Television systems > Systems for the transmission of television signals using pulse code modulation > Systems for transmission of a pulse code modulated with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
PICTORIAL COMMUNICATION, e.g. TELEVISION

Additional Content

Assembling of a multiplex stream by combining a video stream with other content or additional data; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream; Assembling of a packetised elementary stream at server side Disassembling of a multiplex stream; Remultiplexing of multiplex streams; Extraction or processing of service information; Disassembling of packetised elementary stream at client side

1 direct subcode

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor 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