Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 15 - Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. morse code
Patents for H04L 15 - Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. morse code (160)
09/2004
09/09/2004US20040174834 Radio communicating apparatus, radio communicating method, and recording medium
05/2004
05/25/2004US6741639 Radio communicating apparatus radio communicating method and recording medium
05/06/2004US20040085574 Keyboard for imaging devices
10/2002
10/10/2002US20020147910 Digitally watermarked maps and signs and related navigational tools
09/2002
09/12/2002WO2002071685A1 Digital watermarking and maps
09/11/2002EP1239596A2 Method of error protected transmission, method of error protected reception of data and transmission system for transmission of data
09/2001
09/18/2001US6292506 Length selectable, hardware efficient pseudorandom code generator
03/2000
03/22/2000CN2370528Y Cipher identifying and control lock and back bill main control cabinet of power source
10/1999
10/13/1999CN2343720Y Automobile head aerial
11/1997
11/26/1997CN1036562C Handle type multifunction morse code transmitter and its code input method
01/1997
01/08/1997CN2244790Y Automatic Morse asynchronous code transmitter
06/1996
06/26/1996CN1125368A Data communication transmission code method and computer optical disc
04/1996
04/25/1996DE4437203A1 Morse symbol determining method
04/1995
04/20/1995DE4432760A1 Morse printer having a fibre pen
04/1994
04/20/1994CN1024310C Equipment & transmitting method for video information of coding explorer for fishes
12/1993
12/01/1993CN1079092A Electronic key board
12/1992
12/22/1992US5173935 Method, system and apparatus for teleprinting
11/1992
11/04/1992CN1065964A Apparatus for encoding fishfinder image information and transmission method
11/04/1992CN1065963A Handle type multifunction morse code transmitter
10/1992
10/27/1992US5159579 Apparatus for encoding fishfinder image information and transmission method
09/1992
09/03/1992DE4202010A1 Morse character controlled typewriter or word processor - allows direct conversion of received morse signals into printed text characters
08/1992
08/25/1992US5142566 Method for transmitting billing data and invoices
03/1992
03/10/1992US5095179 Extensive morse code processing system
01/1992
01/07/1992CA1294019C Single-handed computer keyboard
11/1991
11/06/1991CN1056030A Communication scheme of chinese-character syllable encode
11/1990
11/21/1990CN2066212U Fj series relay signalling unit
10/1990
10/17/1990CN1010058B Chinese article writting device
11/1989
11/02/1989EP0339697A2 Method and apparatus for teleprinting public services data at the subscriber
06/1989
06/07/1989CN2039089U Automatic control equipment for transmitting code by radio
12/1988
12/28/1988CN88219663U 半自动电子键 Semi-automatic electronic key
10/1988
10/05/1988CN88100889A Chinese article writting device
01/1988
01/05/1988US4717914 Methods for receiving and converting high speed serial data pattern input signals to parallel data pattern outputs
07/1987
07/01/1987EP0227378A2 Method for receiving and converting high speed serial data pattern input signals to parallel data pattern output
06/1987
06/24/1987CN86203279U Morse code transmitter controlled by single board microcomputer
06/10/1987CN86107210A Communication scheme for chinese character
05/1986
05/20/1986US4590330 Printer
10/1985
10/15/1985US4547860 Computer keyboards with few keys designating hundreds of functions
02/1985
02/13/1985EP0023511B1 Process and device for detecting and interpreting a distress signal
12/1984
12/04/1984CA1179048A1 Interface unit for a modular telecommunication system
12/04/1984CA1179047A1 Modular telecommunication system
12/04/1984CA1179046A1 Apparatus and method for controlling a modular telecommunication system
10/1984
10/02/1984US4475245 Transceiver
08/1984
08/14/1984CA1172739A1 Modular telecommunication system
02/1984
02/07/1984US4430644 Encoding apparatus having an acoustic member with mirror-image tabs
01/1984
01/17/1984US4426711 Process for the transmission of service signals for a digital radio beam, as well as transmitter and receiver for using such a process
09/1982
09/28/1982US4352199 Method and device for detecting and interpreting a distress signal
09/07/1982CA1131317A1 Method and device for detecting and interpreting a distress signal
07/1982
07/20/1982US4340776 Modular telecommunication system
07/20/1982US4340775 Apparatus and method for controlling a modular telecommunication system
06/1982
06/02/1982EP0053051A1 Method of transmitting operational signals of a digital microwave link; transmitter and receiver for carrying out such a method
06/01/1982US4333091 Command buffers for electronic code keyer
05/1982
05/25/1982US4331835 Interface unit for a modular telecommunication system
05/25/1982US4331834 Made by dissolving polymer particles contained in a concrete coating to form pocks
01/1982
01/19/1982US4311991 Acoustic transmission member
09/1981
09/29/1981US4292624 International Morse Code number generator
03/1981
03/24/1981US4258356 Multi bar encoding apparatus utilizing acoustic energy
02/1981
02/11/1981EP0023511A1 Process and device for detecting and interpreting a distress signal.
12/1980
12/16/1980US4239933 Circuit arrangement for releasing a keyboard store in teleprinters or data printers
08/1980
08/07/1980WO1980001631A1 Process and device for detecting and interpreting a distress signal
11/1979
11/28/1979EP0005488A1 Circuit arrangement for keyboard memory release in teleprinters or data printers
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