TREA

Apparatus or local circuits for transmitting or receiving dot-and-dash codes

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Industry

  • CPC
  • H04L15/00
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Parent Industries

HELECTRICITY H04Electric communication H04LTRANSMISSION OF DIGITAL INFORMATION

Current Industry

H04L15/00Apparatus or local circuits for transmitting or receiving dot-and-dash codes

Sub Industries

H04L15/03Keys structurally combined with sound generators H04L15/04Apparatus or circuits at the transmitting end H04L15/06with a restricted number of keys H04L15/08with a single key which transmits dots in one position and dashes in a second position H04L15/10combined with perforating apparatus H04L15/12with keyboard co-operating with code-bars H04L15/14combined with perforating apparatus H04L15/16with keyboard co-operating with code discs H04L15/18Automatic transmitters H04L15/20with optical sensing means H04L15/22Apparatus or circuits for sending one or a restricted number of signals H04L15/24Apparatus or circuits at the receiving end H04L15/26Operating only on reception of predetermined code signals H04L15/28Code reproducing apparatus H04L15/285Telegraph sounders; Apparatus for acoustic reception H04L15/30Writing recorders H04L15/32Perforating recorders H04L15/34Apparatus for recording received coded signals after translation
Industries