Warning receiver readiness monitoring circuit
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United States of America Patent
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-
Dec 31, 1991
Grant Date -
N/A
app pub date -
Jan 24, 1990
filing date -
Mar 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A warning radio receiver is adapted to receive not only a recognition signal for emergency broadcast but also two further recognition signals, namely a warning network transmitter recognition signal and a warning region recognition signal. If, for example, the currently tuned transmitter changes its warning region recognition signal, after the expiration of the timing period of a first timer 16, one or more seeking operations for other transmitters with the predetermined warning region recognition signal are started. If a predetermined number of such seeking operations remain unsuccessful, the reception readiness of the transmitter is demonstrated by switchover to a transmitter associated with a different warning region. If such other transmitters also cannot be found, exceeding another predetermined number of fruitless seeking operations results in the generation of a receiver malfunction indication.
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