Communications: electrical – Digital comparator systems
Patent
1976-03-19
1978-03-14
Yusko, Donald J.
Communications: electrical
Digital comparator systems
340147PC, 340171PF, 340349, H04Q 912
Patent
active
040793559
ABSTRACT:
A transmission of a binary signal which transmission is immune to interference is obtained by transmitting the bits of the binary signal by means of a frequency-modulated signal in which a cycles of a first frequency f.sub.1 are followed by b cycles of a second frequency f.sub.2 for a binary zero value and b cycles of the first frequency f.sub.1 are followed by a cycles of the second frequency f.sub.2 for a binary one value.
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patent: 4005428 (1977-01-01), Graham
patent: 4019142 (1977-04-01), Wycoff
Steckler Henry I.
Trifari Frank R.
U.S. Philips Corporation
Yusko Donald J.
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