Circuit Arrangement and Method for Controlling Communication Between a Control Circuit and a Transmitter/Receiver Unit via a Supply Line
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United States of America Patent
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Issued Date -
Dec 22, 2011
app pub date -
May 20, 2011
filing date -
May 20, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A circuit arrangement is disclosed comprising a transmitter/receiver unit (1), a control circuit (2) and a supply line (3). The transmitter/receiver unit (1) comprises a supply input (4) for connecting the supply line, an energy storage unit (5) that with a first connection is coupled to the supply input (4) and that is configured to guarantee an internal energy supply during a reduction of an average supply signal (VS) at the supply input (4) over a predetermined time period, a detection unit (6) that is coupled to the supply input (4) and that is configured to detect a reduction of the average supply signal (VS) over the predetermined time period and at which an evaluation signal (AS) can be tapped, and a data transmission unit (7) that is coupled to the detection unit (6) and to the supply input (4) and that is configured to send a data signal (SD) via the supply line, depending on the evaluation signal (AS).
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