H04L15/04 - CPC Classification Index

ClassID:

225624 ⎘

H04L15/04 - CPC Classification

Classification description:

Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code Apparatus or circuits at the transmitting end

Sub-classes:

H04L15/06 » with a restricted number of keys, e.g. separate key for each type of code element 3
H04L15/12 » with keyboard co-operating with code-bars 0
H04L15/16 » with keyboard co-operating with code discs 2
H04L15/18 » Automatic transmitters, e.g. controlled by perforated tape 0
H04L15/22 » Apparatus or circuits for sending one or a restricted number of signals, e.g. distress signals 0

Recent Application in this class:

20240289856

ESTABLISHING A COMMUNICATION SESSION USING A HANDSHAKE PROCESS WITH LIGHT SIGNALS

20200106643

Morse code input method and portable electronic device for performing same

20180316430

METHOD FOR TRANSMISSION AND RECEPTION OF UNIFORM RESOURCE IDENTIFIER

20180013589

Triggering an identification signal broadcast of a first navigational aid equipment using a tone in the voice band transmitted by a second navigational aid equipment

20170195139

Mechanism to transmit text messages using ring time

20170195138

Mechanism to transmit text messages using ring time

20160315790

Transmitter for transmitting a high-rate data transmission through direct excitation

20130032415

Through metal communication system

20060019615

Wireless keying for a continuous wave (CW) amateur radio transmitter