Abstract: A system for simultaneous transmission (1) of Morse signaling over a radio communication using digital technology, comprising a signal generator (2) with at least one digital modulation which includes at least one amplitude modulation component; a Morse code generator (3) that generates Morse tones in analog form; and a first attenuator module (4), controlled by the Morse code generator (4). In this way, a signal with digital modulation generated by the signal generator (2) is attenuated in amplitude by the first attenuator module (4), the amplitude attenuation being the function of the amplitude of the waveform generated by the Morse code generator (3). In this way the transmission of information by digital modulation is simultaneous with the transmission of the Morse code by analog amplitude modulation (AM), using one single radiofrequency (RF) carrier signal and without service interruption or information loss.
Type:
Grant
Filed:
February 13, 2013
Date of Patent:
November 18, 2014
Assignee:
Teltronic, S.A.
Inventors:
Javier Cordova Val, Ignacio Cano Lazaro, Roman Abadias Pelacho
Abstract: Method for adapting radiofrequency signal spectrum, particularly in TETRA communications systems. The invention proposes using over-the-air signaling for communications systems according to the TETRA standard, to configure the characteristics of the radiofrequency signal, with the advantage that there is no loss of performance in data transmission speed and no need to change the type of modulation.
Type:
Grant
Filed:
July 10, 2009
Date of Patent:
January 7, 2014
Assignee:
Teltronic, S.A.U.
Inventors:
Javier Cordova Val, Pedro Luis Diaz Herce, Alfredo Calderon
Abstract: System for simultaneous transmission (1) of Morse signaling over a radio communication using digital technology, comprising: a signal generator (2) with at least one digital modulation which includes at least one amplitude modulation component; a Morse code generator (3) that generates Morse tones in analog form; a first attenuator module (4), controlled by the Morse code generator (4). In this way, a signal with digital modulation generated by the signal generator (2) is attenuated in amplitude by the first attenuator module (4), the amplitude attenuation being the function of the amplitude of the waveform generated by the Morse code generator (3). In this way the transmission of information by means of digital modulation is simultaneous with the transmission of the Morse code by means of analog amplitude modulation (AM), using one single radiofrequency (RF) carrier signal and without service interruption or information loss.
Abstract: Method for adapting radiofrequency signal spectrum, particularly in TETRA communications systems. The invention proposes using over-the-air signaling for communications systems according to the TETRA standard, to configure the characteristics of the radiofrequency signal, with the advantage that there is no loss of performance in data transmission speed and no need to change the type of modulation.
Type:
Application
Filed:
July 10, 2009
Publication date:
January 13, 2011
Applicant:
Teltronic, S.A.U.
Inventors:
Javier CORDOVA VAL, Pedro Luis Diaz Herce