Telecommunications – Transmitter and receiver at separate stations
Patent
1988-06-30
1991-04-02
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
455 62, 375 40, 375 82, 34082558, H04Q 700
Patent
active
050052098
ABSTRACT:
Selective addresses and/or emergency messages are transmitted between individual stations by using a calling signal consisting of a synchronization signal and an address signal (SS and AS) sent out by a transmitter. The address signal (AS) used is a FSK signal which forms a diversity pair by being subdivided into two identical m-ary FSK signals. The type of operation used is a Channel in Band Scanning. The apparatus contains an address signal receiver which is realized by Real Time-Digital-Signal processing. As a result, the desired participating stations and only these can be reliably and unequivocally activated. In addition, the process is extremely insensitive to interferences.
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Kung Roland
Widmer Hanspeter
Eisenzopf Reinhard J.
Faile Andrew
Zellweger Telecommunications AG
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