Voice-activated personal alarm
DCFirst Claim
1. A personal alarm system remote unit, comprising:
- a navigational receiver for providing a location of the remote unit;
a voice-activated detector having an output signal that becomes active when a predetermined distress phrase is detected; and
a radio transmitter connected for transmitting the remote unit location when the output signal becomes active.
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Abstract
A voice-activated personal alarm includes a satellite global positioning receiver, a specific danger sensor, a voice activation circuit, and a radio transmitter. In a specific embodiment, the satellite global positioning receiver relies upon the U.S. Global Positioning System (“GPS”). In another specific embodiment, the radio transmitter is provided by a wireless telephone using an existing wireless communications network and therefore also provides a two-way voice communication channel. In a specific embodiment of the invention, a distress phrase such as “HELP!” spoken into a microphone is recognized and activates the radio transmitter to transmit the current global location. In another embodiment, the detection of a specific danger by the danger sensor also activates the transmission of the current global location.
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Citations
22 Claims
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1. A personal alarm system remote unit, comprising:
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a navigational receiver for providing a location of the remote unit;
a voice-activated detector having an output signal that becomes active when a predetermined distress phrase is detected; and
a radio transmitter connected for transmitting the remote unit location when the output signal becomes active. - View Dependent Claims (2, 3)
a sensor having at least one output signal and defining a sensor status; and
the radio transmitter also connected for transmitting the sensor status.
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3. The personal alarm system remote unit as set forth in claim 2, further including:
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a threshold detector connected for receiving the sensor at least one output signal; and
the radio transmitter also connected for transmitting the remote unit location and the sensor status when the sensor output exceeds a predetermined threshold as determined by the threshold detector.
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4. A personal alarm system, comprising:
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a remote unit including, a navigational receiver for receiving navigational information, a demodulator for demodulating the received navigational information, timing circuits for providing precise time-of-day information, a voice-activated detector having an output signal that becomes active when a predetermined distress phrase is detected, and a radio transmitter for transmitting the demodulated navigational information and the precise time-of-day information when the detector output signal becomes active; and
a base station including, a radio receiver for receiving the demodulated navigational information, and the precise time-of-day information, computational means connected for combining the received demodulated navigational information and the precise time-of-day information to determine a location of the remote unit, a display for displaying the location of the remote unit, and an alarm activated by receipt of a transmission from the remote unit, whereby, the remote unit location is displayed and an alarm is activated when the predetermined distress phrase is detected. - View Dependent Claims (5)
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6. A personal alarm system, comprising:
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a remote unit including, a navigational receiver for receiving navigational information defining a location of the remote unit, a voice-activated detector having an output signal that becomes active when a predetermined phrase is detected, and a radio transmitter for transmitting the remote unit location when the output signal is active; and
a base station including, a radio receiver for receiving the remote unit location, a display for displaying the location of the remote unit, and an alarm activated by receipt of a transmission from the remote unit, whereby, the remote unit location is displayed and an alarm is activated when the predetermined distress phrase is detected. - View Dependent Claims (7)
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8. A personal alarm system remote unit, comprising:
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a radio transmitter and radio receiver for providing a two-way radio communication link;
a navigational receiver for providing a location of the remote unit;
a voice-activated detector having an output signal activated by the detection of a predetermined distress phrase;
the radio transmitter connected for transmitting the remote unit location when the output signal is activated; and
a microphone and speaker connected with the radio transmitter and receiver for providing a two-way voice channel via the two-way radio communication link. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A personal alarm system remote unit, comprising:
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a navigational receiver for receiving navigational information;
a demodulator for demodulating the received navigational information;
timing circuits for providing precise time-of-day information;
a voice-activated detector having an output signal activated by the detection of a predetermined distress phrase; and
a radio transmitted for transmitting the demodulated navigational information, and the precise time-of-day information when the output signal is activated. - View Dependent Claims (15, 16)
a sensor having at least one output signal and defining a sensor status; and
the radio transmitter also connected for transmitting the sensor status.
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16. The personal alarm system remote unit as set forth in claim 15, further including:
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a threshold detector connected for receiving the sensor at least one output signal; and
the radio transmitter also connected for transmitting the remote unit location and the sensor status when the sensor output exceeds a predetermined threshold as determined by the threshold detector.
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17. A personal alarm system remote unit, comprising:
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a radio transmitter and radio receiver for providing a two-way radio communication link;
a navigational receiver for providing navigational information;
a demodulator for demodulating the received navigational information;
timing circuits for providing precise time-of-day information;
a voice-activated detector having an output signal activated by the detection of a predetermined distress phrase;
the radio transmitter connected for transmitting the demodulated navigational information, and the precise time-of-day information, when the output signal is activated; and
a microphone and speaker connected with the radio transmitter and receiver for providing a two-way voice channel via the two-way radio communication link. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification