H04H BROADCAST COMMUNICATION
Introduced: September 1968
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- BROADCAST COMMUNICATION
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.
Scope Notes
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
Related Keywords
3 direct subcodes
Child Classifications
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- H04H 20/00 Arrangements for broadcast or for distribution combined with broadcast
- H04H 40/00 Arrangements specially adapted for receiving broadcast information
- H04H 60/00 Arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time; Broadcast-related systems