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United States of America Patent
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Apr 4, 1989
Issued Date -
N/A
app pub date -
Jan 7, 1986
filing date -
Jan 11, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A remotely powered portable member having circuitry for storing and transmitting coded information. A first coupling device is provided for receiving a signal transmitted via one of a magnetic field and an electric field. A power circuit is connected to the first coupling device for deriving operating power from the received signal for use by the circuitry. A second coupling device is connected to the circuitry for transmitting coded information stored by the circuitry via the other one of the magnetic field and electric field.
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