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:

IPC:

BROADCAST COMMUNICATION

CPC:

BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)

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 2201/00 Aspects of broadcast communication 2nd only +8 CPC CPC only CPC only
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