Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-09-07
2009-12-22
Previl, Daniel (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S315000, C340S686100, C340S545300
Reexamination Certificate
active
07636048
ABSTRACT:
A unit having a transmitting antenna (3a) and a receiving antenna (3b) connected through a coupling block (3) to a reference oscillator (1) and to a recording oscillator (2), the reference oscillator (1) is connected to a converter f/U1(4) for measuring and changing frequency of the reference oscillator (1) to a voltage necessary for feedback check of the reference frequency, and to an analogue block (7) for measuring variation of the reference oscillator voltage. The recording oscillator (2) is connected to a converter f/U2(5) for measuring and changing frequency from the detecting oscillator (2) to a voltage necessary for checking the received frequency. Converter f/U1(4), analogue block (7), detecting oscillator (2) and converter f/U2(5) are connected to a digital block (6) for recording, controlling, surveillance and regulating the respective operations and evaluating operation of the respective blocks. The digital block (6) is connected to the reference oscillator (1).
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Kará{hacek over (c)} Zdenko
Krasula L'ubo{hacek over (s)}
Ohlandt Greeley Ruggiero & Perle LLP
Previl Daniel
Ralen Research Centrum, s.r.o.
Rauchfuss, Jr. George W.
Ruggiero Charles N. J.
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