Radio switching apparatus
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United States of America Patent
Stats
-
May 18, 1999
Grant Date -
N/A
app pub date -
Mar 6, 1997
filing date -
Mar 12, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A radio switching apparatus is provided which is actuated upon reception of a radio signal and which is capable zero or near-zero standby electric power consumption. The radio switching apparatus includes a receiving antenna; a surface-acoustic-wave device to which a signal received by the antenna is fed and which extracts a specific pattern contained in the signal; a storing circuit for storing output electric power of the surface-acoustic-wave device; and a switch circuit which is turned on when the output voltage of the storing circuit exceeds a set value.
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