Appeal No. 1998-0493
Application 08/364,000
application. The invention relates to a cellular
telephone feature which reduces unused channel time. In
particular, when the battery voltage drops below an operable
level, it takes several seconds for the base station to
recognize that the cellular unit has stopped communication.
The invention minimizes these wasted seconds by informing the
user and initiating a timer count when the battery voltage
falls below a certain level. After the timer has reached a
certain count, and the battery voltage is still low, the unit
forcibly terminates communication after notifying the user.
When terminating, the unit executes a conversation ending
procedure, signaling the base station that it may release the
channel. This conversation ending procedure saves the base
station several seconds in realizing the unit has stopped
communication.
Representative independent claim 1 is reproduced as
follows:
1. A radio telephone apparatus comprising:
a power source;
a voltage measuring means for measuring an output
2
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