Radio telephone apparatus having an instantaneous conversation f

Details Radio telephone apparatus having an instantaneous conversation f Radio telephone apparatus having an instantaneous conversation f

1990-09-17

1992-09-15

Dwyer, James L.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 61, H04M 1110

Patent

active

051484706

ABSTRACT:
A radio telephone apparatus including a base unit connected to a wire line and a radio telephone unit connected to the base unit via a radio communication link. The apparatus has an instantaneous conversation function for establishing a conversation state by detecting that the radio telephone unit has been lifted up in a standby state, and also has a talk commencing/terminating key allowing a command for commencing a conversation and a command for terminating the conversation to be inputted alternately. A time guard controlling circuit is also provided for invalidating an input operation of the talk commencing/terminating key if the talk commencing/terminating key is operated during a preset time. Simultaneously as the conversation state is established by lifting the radio telephone unit in the standby state, the preset timer is started, and even if the talk commencing/terminating key is pressed during the preset time of the timer, the input operation is invalidated and the conversation state is maintained.

REFERENCES:
patent: 4910761 (1990-03-01), Shimura et al.
patent: 4920557 (1990-04-01), Umemoto
patent: 4969205 (1990-11-01), Itoh

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