Telephonic communications – Emergency or alarm communications – Announcement or alarm received at terminal station
Patent
1997-09-08
1999-06-29
Chan, Wing F.
Telephonic communications
Emergency or alarm communications
Announcement or alarm received at terminal station
455556, 4551662, H04M 1104
Patent
active
059178876
ABSTRACT:
An emergency alert communication system comprising a radio frequency receiver. The radio frequency receiver decodes incoming emergency alert signals and demodulates data header signals and emergency alert voice message signals of the emergency alert signals. Included in the data header signals are event and location code signals, which are followed by the emergency alert voice message signals. The demodulated data header signals in the form of digital data header signals are applied to a microcontroller. A telephone keypad of a telephone device is actuated to enter into the microcontroller event and location code signals. Should the event and location code signals demodulated by the receiver and applied to the microcontroller match the event and location code signals entered into the microcontroller by the telephone keypad, the microcontroller routes through an audio switching circuit the emergency alert voice message signals to a speaker, a recording device and a telephone handset of a telephone device. The radio frequency receiver, the microcontroller, the telephone handset, the telephone keypad, the speaker, and the recording device are embodied in the telephone device.
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Fesler Kenneth A.
Goy Carl
Chan Wing F.
TFT, Inc.
Wiseman Jack M.
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