Patent ID: 6377785
Filing Date: 2002-04-23
Classification: H04W

Abstract:
A portable telephone set comprising:amplifying means for amplifying transmission power based on a control signal transmitted from a base station; first switching means for switching between ON- and OFF-states of said amplifying means based on said control signal; second switching means for switching between ON- and OFF-states of said amplifying means based on an external operative action; said first switching means comprising means for setting said amplifying means to the ON-state if said control signal controls said transmission power so as to be equal to or smaller than a predetermined level, and setting said amplifying means to the OFF-state if said control signal controls said transmission power so as to be greater than said predetermine level; said second switching means comprising means for turning on and off said amplifying means when said first switching means sets said amplifying means to the OFF-state; and display means for displaying contents of said control signal, said display means comprising means for displaying a message indicating that said second switching means does not need to be operated if said control signal controls the transmission power so as to be equal to or less than the predetermined level, and displaying a message to operate said second switching means if said control signal controls the transmission power so as to be greater than the predetermined level.