Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1992-07-07
1994-07-05
Kuntz, Curtis
Telephonic communications
Audio message storage, retrieval, or synthesis
379144, 379114, 379145, 379147, H04M 1100
Patent
active
053274822
ABSTRACT:
A public cordless telephone system which comprises abase unit and a branch unit connected to the base unit through a radio link to be used by many unspecified persons. The public cordless telephone system comprises a base unit connected to a public line network, a charger provided integrally with the base unit or separately therefrom, and at least one branch unit connected with the base unit through the radio link and having a battery as a power source, and removably mounted to the charger for charging the battery when mounted on the charger. The system detects the charge in the battery of the branch unit when the branch unit is mounted to the charger, and inhibits use of the branch unit when the remaining charge is insufficient to make a call. The system further includes a theft detection function that continuously transmits a theft signal from the branch unit until the battery of the branch unit is exhausted.
REFERENCES:
patent: 4777646 (1988-11-01), Harris
patent: 4831647 (1989-05-01), D'Avello et al.
patent: 4879744 (1989-11-01), Tasaki et al.
patent: 4881259 (1989-11-01), Scordato
patent: 4939766 (1990-06-01), Umemoto et al.
patent: 5138650 (1992-08-01), Stahl et al.
Kabushiki Kaisha Toshiba
Kuntz Curtis
Oehling G. J.
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