Radio telephone
AssigneesNEC Corporation, Nippon Telegraph and Telephone Corporation
InventorsYukihiro Shimura, Noboru Saegusa, Yuichiro Takagawa, Shoichi Tozuka, Yasushi Hatakeyama
Life of this patent
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Abstract
A radio telephone having a base unit connected to a wired telephone line, a handset unit connectable to the base unit over a radio channel and provided with a hook switch, and a charger for selectively charging the handset unit. The handset unit is automatically controlled to either an on-hook state or an off-hook state when removed from the charger, depending upon the hook state in which the handset unit has been held before the start of charging.
Claims4
In a radio telephone having a base unit connected to a wired telephone line, a handset unit connectable to said base unit over a radio channel and having a hook switch, and a charger for selectively charging said handset unit, said handset unit comprising:
- charge detecting means for determining whether or not said handset unit is being charged by said charger;
- memory means for storing a state of said hook switch which has occurred before a start of charging by said charge;
- and
- control means for constantly monitoring an output of said hook switch and, upon turn of the output of said hook switch from a charging state to a charge interruption state, controlling said handset unit to a state to said hook switch which is stored in said memory means.
Dependencies are inferred from the claim text.