H04H BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
Introduced: September 1968
Description
H04H covers technologies for transmitting information simultaneously to multiple recipients through electromagnetic waves or similar broadcast media. This subclass encompasses radio broadcasting, television transmission, digital broadcast systems, and related infrastructure for one-way mass communication. Included are modulation techniques, broadcast standards, receiver designs, and transmission protocols specific to broadcast applications. Related but distinct transmission methods such as point-to-point telecommunications (H04B) and closed circuit systems are classified elsewhere.
Title
Titles differ between systems:
IPC: BROADCAST COMMUNICATION
CPC: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
Full Title
Full titles differ between systems:
BROADCAST COMMUNICATION
BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
Additional Content IPC
Glossary
broadcast broadcasts simultaneous distribution of identical signals to plural receiving stations. The term "broadcast" does not include distribution to receiving stations which is controlled by requests or responses from the receiving stations. broadcast information all kinds of information distributed by broadcast systems, e.g. broadcast programme. broadcast-related information information required by services provided via broadcast systems, other than broadcast information. broadcast time a time when particular broadcast information exists and is available. broadcast channel broadcast channels a channel via which broadcast information is distributed, e.g. carrier waves, time slots, cables or wireless broadcast service areas. broadcast space either a set of broadcast channels in which particular broadcast information exists and is available or a geographical area determined by the set of broadcast channels. broadcast space-time space-time determined by broadcast space and broadcast time in which particular broadcast information exists and is available. broadcast system broadcast systems a system which consists of transmitter, transponder and receiver for broadcast. broadcast-related system broadcast-related systems a system which is directly affected by generation, broadcast, reception or use of broadcast information. broadcast service broadcast services a service provided by a broadcast system, i.e. distribution service of broadcast information. broadcast-related service broadcast-related services a service directly provided by broadcast-related systems. "A with a direct linkage to B" "A directly affects B" or "A is directly affected by B".
Limiting references
Multiplex communication Pictorial communication aspects in broadcast systems
Of 4 combined children, 3 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H04H 20/00 Arrangements for broadcast or for distribution combined with broadcast since 2009 IPC+CPC Available in IPC and CPC
- H04H 40/00 Arrangements specially adapted for receiving broadcast information since 2009 IPC+CPC Available in IPC and CPC
- H04H 60/00 Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems since 2009 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H04,2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 97,396
- HUAWEI TECHNOLOGIES COMPANY CN 96,502
- SAMSUNG ELECTRONICS COMPANY KR 86,981
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
- HUAWEI TECHNOLOGIES COMPANY 55,349
- LG ELECTRONICS KR 53,649
- CANON 33,341
- SONY CORPORATION JP 32,761
- ZTE CORPORATION CN 32,274
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327
Top Applicants (CPC)
Class H04,2013–2023, worldwide · Source: EPO PATSTAT
- HUAWEI TECHNOLOGIES COMPANY CN 101,476
- QUALCOMM US 101,139
- SAMSUNG ELECTRONICS COMPANY KR 96,655
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
- LG ELECTRONICS KR 55,253
- HUAWEI TECHNOLOGIES COMPANY 54,181
- SONY CORPORATION JP 35,309
- ZTE CORPORATION CN 32,950
- INTEL CORPORATION US 27,533
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498