Alarm circuit for residual capacity of battery in portable radio transmitting and receiving apparatus
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United States of America Patent
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-
Aug 10, 1999
Grant Date -
N/A
app pub date -
Jun 17, 1998
filing date -
Jun 17, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Voltage setting information designating a battery voltage for initiating alarming and alarm setting information designating a method for outputting the alarm are input from a keying section and variably stored in a memory. A computing section compares battery voltage information in a battery detected by a battery voltage detecting section with the voltage setting information and, when the voltage in the battery voltage information is lower than the voltage in the voltage setting information, outputs an alarm sound signal or a call incoming lamp signal based on the alarm setting information to give the alarm to a user by sounding the alarm using a sound source or by emitting light using a call incoming lamp. This construction enables the residual capacity of the battery, at which alarming is initiated, and a method for giving the alarm to be varied as desired by a user.
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